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env-llmeval/lib/python3.10/site-packages/dateutil/parser/__init__.py

@@ -0,0 +1,61 @@
+# -*- coding: utf-8 -*-
+from ._parser import parse, parser, parserinfo, ParserError
+from ._parser import DEFAULTPARSER, DEFAULTTZPARSER
+from ._parser import UnknownTimezoneWarning
+
+from ._parser import __doc__
+
+from .isoparser import isoparser, isoparse
+
+__all__ = ['parse', 'parser', 'parserinfo',
+           'isoparse', 'isoparser',
+           'ParserError',
+           'UnknownTimezoneWarning']
+
+
+###
+# Deprecate portions of the private interface so that downstream code that
+# is improperly relying on it is given *some* notice.
+
+
+def __deprecated_private_func(f):
+    from functools import wraps
+    import warnings
+
+    msg = ('{name} is a private function and may break without warning, '
+           'it will be moved and or renamed in future versions.')
+    msg = msg.format(name=f.__name__)
+
+    @wraps(f)
+    def deprecated_func(*args, **kwargs):
+        warnings.warn(msg, DeprecationWarning)
+        return f(*args, **kwargs)
+
+    return deprecated_func
+
+def __deprecate_private_class(c):
+    import warnings
+
+    msg = ('{name} is a private class and may break without warning, '
+           'it will be moved and or renamed in future versions.')
+    msg = msg.format(name=c.__name__)
+
+    class private_class(c):
+        __doc__ = c.__doc__
+
+        def __init__(self, *args, **kwargs):
+            warnings.warn(msg, DeprecationWarning)
+            super(private_class, self).__init__(*args, **kwargs)
+
+    private_class.__name__ = c.__name__
+
+    return private_class
+
+
+from ._parser import _timelex, _resultbase
+from ._parser import _tzparser, _parsetz
+
+_timelex = __deprecate_private_class(_timelex)
+_tzparser = __deprecate_private_class(_tzparser)
+_resultbase = __deprecate_private_class(_resultbase)
+_parsetz = __deprecated_private_func(_parsetz)

env-llmeval/lib/python3.10/site-packages/dateutil/parser/_parser.py

@@ -0,0 +1,1613 @@
+# -*- coding: utf-8 -*-
+"""
+This module offers a generic date/time string parser which is able to parse
+most known formats to represent a date and/or time.
+
+This module attempts to be forgiving with regards to unlikely input formats,
+returning a datetime object even for dates which are ambiguous. If an element
+of a date/time stamp is omitted, the following rules are applied:
+
+- If AM or PM is left unspecified, a 24-hour clock is assumed, however, an hour
+  on a 12-hour clock (``0 <= hour <= 12``) *must* be specified if AM or PM is
+  specified.
+- If a time zone is omitted, a timezone-naive datetime is returned.
+
+If any other elements are missing, they are taken from the
+:class:`datetime.datetime` object passed to the parameter ``default``. If this
+results in a day number exceeding the valid number of days per month, the
+value falls back to the end of the month.
+
+Additional resources about date/time string formats can be found below:
+
+- `A summary of the international standard date and time notation
+  <https://www.cl.cam.ac.uk/~mgk25/iso-time.html>`_
+- `W3C Date and Time Formats <https://www.w3.org/TR/NOTE-datetime>`_
+- `Time Formats (Planetary Rings Node) <https://pds-rings.seti.org:443/tools/time_formats.html>`_
+- `CPAN ParseDate module
+  <https://metacpan.org/pod/release/MUIR/Time-modules-2013.0912/lib/Time/ParseDate.pm>`_
+- `Java SimpleDateFormat Class
+  <https://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html>`_
+"""
+from __future__ import unicode_literals
+
+import datetime
+import re
+import string
+import time
+import warnings
+
+from calendar import monthrange
+from io import StringIO
+
+import six
+from six import integer_types, text_type
+
+from decimal import Decimal
+
+from warnings import warn
+
+from .. import relativedelta
+from .. import tz
+
+__all__ = ["parse", "parserinfo", "ParserError"]
+
+
+# TODO: pandas.core.tools.datetimes imports this explicitly.  Might be worth
+# making public and/or figuring out if there is something we can
+# take off their plate.
+class _timelex(object):
+    # Fractional seconds are sometimes split by a comma
+    _split_decimal = re.compile("([.,])")
+
+    def __init__(self, instream):
+        if isinstance(instream, (bytes, bytearray)):
+            instream = instream.decode()
+
+        if isinstance(instream, text_type):
+            instream = StringIO(instream)
+        elif getattr(instream, 'read', None) is None:
+            raise TypeError('Parser must be a string or character stream, not '
+                            '{itype}'.format(itype=instream.__class__.__name__))
+
+        self.instream = instream
+        self.charstack = []
+        self.tokenstack = []
+        self.eof = False
+
+    def get_token(self):
+        """
+        This function breaks the time string into lexical units (tokens), which
+        can be parsed by the parser. Lexical units are demarcated by changes in
+        the character set, so any continuous string of letters is considered
+        one unit, any continuous string of numbers is considered one unit.
+
+        The main complication arises from the fact that dots ('.') can be used
+        both as separators (e.g. "Sep.20.2009") or decimal points (e.g.
+        "4:30:21.447"). As such, it is necessary to read the full context of
+        any dot-separated strings before breaking it into tokens; as such, this
+        function maintains a "token stack", for when the ambiguous context
+        demands that multiple tokens be parsed at once.
+        """
+        if self.tokenstack:
+            return self.tokenstack.pop(0)
+
+        seenletters = False
+        token = None
+        state = None
+
+        while not self.eof:
+            # We only realize that we've reached the end of a token when we
+            # find a character that's not part of the current token - since
+            # that character may be part of the next token, it's stored in the
+            # charstack.
+            if self.charstack:
+                nextchar = self.charstack.pop(0)
+            else:
+                nextchar = self.instream.read(1)
+                while nextchar == '\x00':
+                    nextchar = self.instream.read(1)
+
+            if not nextchar:
+                self.eof = True
+                break
+            elif not state:
+                # First character of the token - determines if we're starting
+                # to parse a word, a number or something else.
+                token = nextchar
+                if self.isword(nextchar):
+                    state = 'a'
+                elif self.isnum(nextchar):
+                    state = '0'
+                elif self.isspace(nextchar):
+                    token = ' '
+                    break  # emit token
+                else:
+                    break  # emit token
+            elif state == 'a':
+                # If we've already started reading a word, we keep reading
+                # letters until we find something that's not part of a word.
+                seenletters = True
+                if self.isword(nextchar):
+                    token += nextchar
+                elif nextchar == '.':
+                    token += nextchar
+                    state = 'a.'
+                else:
+                    self.charstack.append(nextchar)
+                    break  # emit token
+            elif state == '0':
+                # If we've already started reading a number, we keep reading
+                # numbers until we find something that doesn't fit.
+                if self.isnum(nextchar):
+                    token += nextchar
+                elif nextchar == '.' or (nextchar == ',' and len(token) >= 2):
+                    token += nextchar
+                    state = '0.'
+                else:
+                    self.charstack.append(nextchar)
+                    break  # emit token
+            elif state == 'a.':
+                # If we've seen some letters and a dot separator, continue
+                # parsing, and the tokens will be broken up later.
+                seenletters = True
+                if nextchar == '.' or self.isword(nextchar):
+                    token += nextchar
+                elif self.isnum(nextchar) and token[-1] == '.':
+                    token += nextchar
+                    state = '0.'
+                else:
+                    self.charstack.append(nextchar)
+                    break  # emit token
+            elif state == '0.':
+                # If we've seen at least one dot separator, keep going, we'll
+                # break up the tokens later.
+                if nextchar == '.' or self.isnum(nextchar):
+                    token += nextchar
+                elif self.isword(nextchar) and token[-1] == '.':
+                    token += nextchar
+                    state = 'a.'
+                else:
+                    self.charstack.append(nextchar)
+                    break  # emit token
+
+        if (state in ('a.', '0.') and (seenletters or token.count('.') > 1 or
+                                       token[-1] in '.,')):
+            l = self._split_decimal.split(token)
+            token = l[0]
+            for tok in l[1:]:
+                if tok:
+                    self.tokenstack.append(tok)
+
+        if state == '0.' and token.count('.') == 0:
+            token = token.replace(',', '.')
+
+        return token
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        token = self.get_token()
+        if token is None:
+            raise StopIteration
+
+        return token
+
+    def next(self):
+        return self.__next__()  # Python 2.x support
+
+    @classmethod
+    def split(cls, s):
+        return list(cls(s))
+
+    @classmethod
+    def isword(cls, nextchar):
+        """ Whether or not the next character is part of a word """
+        return nextchar.isalpha()
+
+    @classmethod
+    def isnum(cls, nextchar):
+        """ Whether the next character is part of a number """
+        return nextchar.isdigit()
+
+    @classmethod
+    def isspace(cls, nextchar):
+        """ Whether the next character is whitespace """
+        return nextchar.isspace()
+
+
+class _resultbase(object):
+
+    def __init__(self):
+        for attr in self.__slots__:
+            setattr(self, attr, None)
+
+    def _repr(self, classname):
+        l = []
+        for attr in self.__slots__:
+            value = getattr(self, attr)
+            if value is not None:
+                l.append("%s=%s" % (attr, repr(value)))
+        return "%s(%s)" % (classname, ", ".join(l))
+
+    def __len__(self):
+        return (sum(getattr(self, attr) is not None
+                    for attr in self.__slots__))
+
+    def __repr__(self):
+        return self._repr(self.__class__.__name__)
+
+
+class parserinfo(object):
+    """
+    Class which handles what inputs are accepted. Subclass this to customize
+    the language and acceptable values for each parameter.
+
+    :param dayfirst:
+        Whether to interpret the first value in an ambiguous 3-integer date
+        (e.g. 01/05/09) as the day (``True``) or month (``False``). If
+        ``yearfirst`` is set to ``True``, this distinguishes between YDM
+        and YMD. Default is ``False``.
+
+    :param yearfirst:
+        Whether to interpret the first value in an ambiguous 3-integer date
+        (e.g. 01/05/09) as the year. If ``True``, the first number is taken
+        to be the year, otherwise the last number is taken to be the year.
+        Default is ``False``.
+    """
+
+    # m from a.m/p.m, t from ISO T separator
+    JUMP = [" ", ".", ",", ";", "-", "/", "'",
+            "at", "on", "and", "ad", "m", "t", "of",
+            "st", "nd", "rd", "th"]
+
+    WEEKDAYS = [("Mon", "Monday"),
+                ("Tue", "Tuesday"),     # TODO: "Tues"
+                ("Wed", "Wednesday"),
+                ("Thu", "Thursday"),    # TODO: "Thurs"
+                ("Fri", "Friday"),
+                ("Sat", "Saturday"),
+                ("Sun", "Sunday")]
+    MONTHS = [("Jan", "January"),
+              ("Feb", "February"),      # TODO: "Febr"
+              ("Mar", "March"),
+              ("Apr", "April"),
+              ("May", "May"),
+              ("Jun", "June"),
+              ("Jul", "July"),
+              ("Aug", "August"),
+              ("Sep", "Sept", "September"),
+              ("Oct", "October"),
+              ("Nov", "November"),
+              ("Dec", "December")]
+    HMS = [("h", "hour", "hours"),
+           ("m", "minute", "minutes"),
+           ("s", "second", "seconds")]
+    AMPM = [("am", "a"),
+            ("pm", "p")]
+    UTCZONE = ["UTC", "GMT", "Z", "z"]
+    PERTAIN = ["of"]
+    TZOFFSET = {}
+    # TODO: ERA = ["AD", "BC", "CE", "BCE", "Stardate",
+    #              "Anno Domini", "Year of Our Lord"]
+
+    def __init__(self, dayfirst=False, yearfirst=False):
+        self._jump = self._convert(self.JUMP)
+        self._weekdays = self._convert(self.WEEKDAYS)
+        self._months = self._convert(self.MONTHS)
+        self._hms = self._convert(self.HMS)
+        self._ampm = self._convert(self.AMPM)
+        self._utczone = self._convert(self.UTCZONE)
+        self._pertain = self._convert(self.PERTAIN)
+
+        self.dayfirst = dayfirst
+        self.yearfirst = yearfirst
+
+        self._year = time.localtime().tm_year
+        self._century = self._year // 100 * 100
+
+    def _convert(self, lst):
+        dct = {}
+        for i, v in enumerate(lst):
+            if isinstance(v, tuple):
+                for v in v:
+                    dct[v.lower()] = i
+            else:
+                dct[v.lower()] = i
+        return dct
+
+    def jump(self, name):
+        return name.lower() in self._jump
+
+    def weekday(self, name):
+        try:
+            return self._weekdays[name.lower()]
+        except KeyError:
+            pass
+        return None
+
+    def month(self, name):
+        try:
+            return self._months[name.lower()] + 1
+        except KeyError:
+            pass
+        return None
+
+    def hms(self, name):
+        try:
+            return self._hms[name.lower()]
+        except KeyError:
+            return None
+
+    def ampm(self, name):
+        try:
+            return self._ampm[name.lower()]
+        except KeyError:
+            return None
+
+    def pertain(self, name):
+        return name.lower() in self._pertain
+
+    def utczone(self, name):
+        return name.lower() in self._utczone
+
+    def tzoffset(self, name):
+        if name in self._utczone:
+            return 0
+
+        return self.TZOFFSET.get(name)
+
+    def convertyear(self, year, century_specified=False):
+        """
+        Converts two-digit years to year within [-50, 49]
+        range of self._year (current local time)
+        """
+
+        # Function contract is that the year is always positive
+        assert year >= 0
+
+        if year < 100 and not century_specified:
+            # assume current century to start
+            year += self._century
+
+            if year >= self._year + 50:  # if too far in future
+                year -= 100
+            elif year < self._year - 50:  # if too far in past
+                year += 100
+
+        return year
+
+    def validate(self, res):
+        # move to info
+        if res.year is not None:
+            res.year = self.convertyear(res.year, res.century_specified)
+
+        if ((res.tzoffset == 0 and not res.tzname) or
+             (res.tzname == 'Z' or res.tzname == 'z')):
+            res.tzname = "UTC"
+            res.tzoffset = 0
+        elif res.tzoffset != 0 and res.tzname and self.utczone(res.tzname):
+            res.tzoffset = 0
+        return True
+
+
+class _ymd(list):
+    def __init__(self, *args, **kwargs):
+        super(self.__class__, self).__init__(*args, **kwargs)
+        self.century_specified = False
+        self.dstridx = None
+        self.mstridx = None
+        self.ystridx = None
+
+    @property
+    def has_year(self):
+        return self.ystridx is not None
+
+    @property
+    def has_month(self):
+        return self.mstridx is not None
+
+    @property
+    def has_day(self):
+        return self.dstridx is not None
+
+    def could_be_day(self, value):
+        if self.has_day:
+            return False
+        elif not self.has_month:
+            return 1 <= value <= 31
+        elif not self.has_year:
+            # Be permissive, assume leap year
+            month = self[self.mstridx]
+            return 1 <= value <= monthrange(2000, month)[1]
+        else:
+            month = self[self.mstridx]
+            year = self[self.ystridx]
+            return 1 <= value <= monthrange(year, month)[1]
+
+    def append(self, val, label=None):
+        if hasattr(val, '__len__'):
+            if val.isdigit() and len(val) > 2:
+                self.century_specified = True
+                if label not in [None, 'Y']:  # pragma: no cover
+                    raise ValueError(label)
+                label = 'Y'
+        elif val > 100:
+            self.century_specified = True
+            if label not in [None, 'Y']:  # pragma: no cover
+                raise ValueError(label)
+            label = 'Y'
+
+        super(self.__class__, self).append(int(val))
+
+        if label == 'M':
+            if self.has_month:
+                raise ValueError('Month is already set')
+            self.mstridx = len(self) - 1
+        elif label == 'D':
+            if self.has_day:
+                raise ValueError('Day is already set')
+            self.dstridx = len(self) - 1
+        elif label == 'Y':
+            if self.has_year:
+                raise ValueError('Year is already set')
+            self.ystridx = len(self) - 1
+
+    def _resolve_from_stridxs(self, strids):
+        """
+        Try to resolve the identities of year/month/day elements using
+        ystridx, mstridx, and dstridx, if enough of these are specified.
+        """
+        if len(self) == 3 and len(strids) == 2:
+            # we can back out the remaining stridx value
+            missing = [x for x in range(3) if x not in strids.values()]
+            key = [x for x in ['y', 'm', 'd'] if x not in strids]
+            assert len(missing) == len(key) == 1
+            key = key[0]
+            val = missing[0]
+            strids[key] = val
+
+        assert len(self) == len(strids)  # otherwise this should not be called
+        out = {key: self[strids[key]] for key in strids}
+        return (out.get('y'), out.get('m'), out.get('d'))
+
+    def resolve_ymd(self, yearfirst, dayfirst):
+        len_ymd = len(self)
+        year, month, day = (None, None, None)
+
+        strids = (('y', self.ystridx),
+                  ('m', self.mstridx),
+                  ('d', self.dstridx))
+
+        strids = {key: val for key, val in strids if val is not None}
+        if (len(self) == len(strids) > 0 or
+                (len(self) == 3 and len(strids) == 2)):
+            return self._resolve_from_stridxs(strids)
+
+        mstridx = self.mstridx
+
+        if len_ymd > 3:
+            raise ValueError("More than three YMD values")
+        elif len_ymd == 1 or (mstridx is not None and len_ymd == 2):
+            # One member, or two members with a month string
+            if mstridx is not None:
+                month = self[mstridx]
+                # since mstridx is 0 or 1, self[mstridx-1] always
+                # looks up the other element
+                other = self[mstridx - 1]
+            else:
+                other = self[0]
+
+            if len_ymd > 1 or mstridx is None:
+                if other > 31:
+                    year = other
+                else:
+                    day = other
+
+        elif len_ymd == 2:
+            # Two members with numbers
+            if self[0] > 31:
+                # 99-01
+                year, month = self
+            elif self[1] > 31:
+                # 01-99
+                month, year = self
+            elif dayfirst and self[1] <= 12:
+                # 13-01
+                day, month = self
+            else:
+                # 01-13
+                month, day = self
+
+        elif len_ymd == 3:
+            # Three members
+            if mstridx == 0:
+                if self[1] > 31:
+                    # Apr-2003-25
+                    month, year, day = self
+                else:
+                    month, day, year = self
+            elif mstridx == 1:
+                if self[0] > 31 or (yearfirst and self[2] <= 31):
+                    # 99-Jan-01
+                    year, month, day = self
+                else:
+                    # 01-Jan-01
+                    # Give precedence to day-first, since
+                    # two-digit years is usually hand-written.
+                    day, month, year = self
+
+            elif mstridx == 2:
+                # WTF!?
+                if self[1] > 31:
+                    # 01-99-Jan
+                    day, year, month = self
+                else:
+                    # 99-01-Jan
+                    year, day, month = self
+
+            else:
+                if (self[0] > 31 or
+                    self.ystridx == 0 or
+                        (yearfirst and self[1] <= 12 and self[2] <= 31)):
+                    # 99-01-01
+                    if dayfirst and self[2] <= 12:
+                        year, day, month = self
+                    else:
+                        year, month, day = self
+                elif self[0] > 12 or (dayfirst and self[1] <= 12):
+                    # 13-01-01
+                    day, month, year = self
+                else:
+                    # 01-13-01
+                    month, day, year = self
+
+        return year, month, day
+
+
+class parser(object):
+    def __init__(self, info=None):
+        self.info = info or parserinfo()
+
+    def parse(self, timestr, default=None,
+              ignoretz=False, tzinfos=None, **kwargs):
+        """
+        Parse the date/time string into a :class:`datetime.datetime` object.
+
+        :param timestr:
+            Any date/time string using the supported formats.
+
+        :param default:
+            The default datetime object, if this is a datetime object and not
+            ``None``, elements specified in ``timestr`` replace elements in the
+            default object.
+
+        :param ignoretz:
+            If set ``True``, time zones in parsed strings are ignored and a
+            naive :class:`datetime.datetime` object is returned.
+
+        :param tzinfos:
+            Additional time zone names / aliases which may be present in the
+            string. This argument maps time zone names (and optionally offsets
+            from those time zones) to time zones. This parameter can be a
+            dictionary with timezone aliases mapping time zone names to time
+            zones or a function taking two parameters (``tzname`` and
+            ``tzoffset``) and returning a time zone.
+
+            The timezones to which the names are mapped can be an integer
+            offset from UTC in seconds or a :class:`tzinfo` object.
+
+            .. doctest::
+               :options: +NORMALIZE_WHITESPACE
+
+                >>> from dateutil.parser import parse
+                >>> from dateutil.tz import gettz
+                >>> tzinfos = {"BRST": -7200, "CST": gettz("America/Chicago")}
+                >>> parse("2012-01-19 17:21:00 BRST", tzinfos=tzinfos)
+                datetime.datetime(2012, 1, 19, 17, 21, tzinfo=tzoffset(u'BRST', -7200))
+                >>> parse("2012-01-19 17:21:00 CST", tzinfos=tzinfos)
+                datetime.datetime(2012, 1, 19, 17, 21,
+                                  tzinfo=tzfile('/usr/share/zoneinfo/America/Chicago'))
+
+            This parameter is ignored if ``ignoretz`` is set.
+
+        :param \\*\\*kwargs:
+            Keyword arguments as passed to ``_parse()``.
+
+        :return:
+            Returns a :class:`datetime.datetime` object or, if the
+            ``fuzzy_with_tokens`` option is ``True``, returns a tuple, the
+            first element being a :class:`datetime.datetime` object, the second
+            a tuple containing the fuzzy tokens.
+
+        :raises ParserError:
+            Raised for invalid or unknown string format, if the provided
+            :class:`tzinfo` is not in a valid format, or if an invalid date
+            would be created.
+
+        :raises TypeError:
+            Raised for non-string or character stream input.
+
+        :raises OverflowError:
+            Raised if the parsed date exceeds the largest valid C integer on
+            your system.
+        """
+
+        if default is None:
+            default = datetime.datetime.now().replace(hour=0, minute=0,
+                                                      second=0, microsecond=0)
+
+        res, skipped_tokens = self._parse(timestr, **kwargs)
+
+        if res is None:
+            raise ParserError("Unknown string format: %s", timestr)
+
+        if len(res) == 0:
+            raise ParserError("String does not contain a date: %s", timestr)
+
+        try:
+            ret = self._build_naive(res, default)
+        except ValueError as e:
+            six.raise_from(ParserError(str(e) + ": %s", timestr), e)
+
+        if not ignoretz:
+            ret = self._build_tzaware(ret, res, tzinfos)
+
+        if kwargs.get('fuzzy_with_tokens', False):
+            return ret, skipped_tokens
+        else:
+            return ret
+
+    class _result(_resultbase):
+        __slots__ = ["year", "month", "day", "weekday",
+                     "hour", "minute", "second", "microsecond",
+                     "tzname", "tzoffset", "ampm","any_unused_tokens"]
+
+    def _parse(self, timestr, dayfirst=None, yearfirst=None, fuzzy=False,
+               fuzzy_with_tokens=False):
+        """
+        Private method which performs the heavy lifting of parsing, called from
+        ``parse()``, which passes on its ``kwargs`` to this function.
+
+        :param timestr:
+            The string to parse.
+
+        :param dayfirst:
+            Whether to interpret the first value in an ambiguous 3-integer date
+            (e.g. 01/05/09) as the day (``True``) or month (``False``). If
+            ``yearfirst`` is set to ``True``, this distinguishes between YDM
+            and YMD. If set to ``None``, this value is retrieved from the
+            current :class:`parserinfo` object (which itself defaults to
+            ``False``).
+
+        :param yearfirst:
+            Whether to interpret the first value in an ambiguous 3-integer date
+            (e.g. 01/05/09) as the year. If ``True``, the first number is taken
+            to be the year, otherwise the last number is taken to be the year.
+            If this is set to ``None``, the value is retrieved from the current
+            :class:`parserinfo` object (which itself defaults to ``False``).
+
+        :param fuzzy:
+            Whether to allow fuzzy parsing, allowing for string like "Today is
+            January 1, 2047 at 8:21:00AM".
+
+        :param fuzzy_with_tokens:
+            If ``True``, ``fuzzy`` is automatically set to True, and the parser
+            will return a tuple where the first element is the parsed
+            :class:`datetime.datetime` datetimestamp and the second element is
+            a tuple containing the portions of the string which were ignored:
+
+            .. doctest::
+
+                >>> from dateutil.parser import parse
+                >>> parse("Today is January 1, 2047 at 8:21:00AM", fuzzy_with_tokens=True)
+                (datetime.datetime(2047, 1, 1, 8, 21), (u'Today is ', u' ', u'at '))
+
+        """
+        if fuzzy_with_tokens:
+            fuzzy = True
+
+        info = self.info
+
+        if dayfirst is None:
+            dayfirst = info.dayfirst
+
+        if yearfirst is None:
+            yearfirst = info.yearfirst
+
+        res = self._result()
+        l = _timelex.split(timestr)         # Splits the timestr into tokens
+
+        skipped_idxs = []
+
+        # year/month/day list
+        ymd = _ymd()
+
+        len_l = len(l)
+        i = 0
+        try:
+            while i < len_l:
+
+                # Check if it's a number
+                value_repr = l[i]
+                try:
+                    value = float(value_repr)
+                except ValueError:
+                    value = None
+
+                if value is not None:
+                    # Numeric token
+                    i = self._parse_numeric_token(l, i, info, ymd, res, fuzzy)
+
+                # Check weekday
+                elif info.weekday(l[i]) is not None:
+                    value = info.weekday(l[i])
+                    res.weekday = value
+
+                # Check month name
+                elif info.month(l[i]) is not None:
+                    value = info.month(l[i])
+                    ymd.append(value, 'M')
+
+                    if i + 1 < len_l:
+                        if l[i + 1] in ('-', '/'):
+                            # Jan-01[-99]
+                            sep = l[i + 1]
+                            ymd.append(l[i + 2])
+
+                            if i + 3 < len_l and l[i + 3] == sep:
+                                # Jan-01-99
+                                ymd.append(l[i + 4])
+                                i += 2
+
+                            i += 2
+
+                        elif (i + 4 < len_l and l[i + 1] == l[i + 3] == ' ' and
+                              info.pertain(l[i + 2])):
+                            # Jan of 01
+                            # In this case, 01 is clearly year
+                            if l[i + 4].isdigit():
+                                # Convert it here to become unambiguous
+                                value = int(l[i + 4])
+                                year = str(info.convertyear(value))
+                                ymd.append(year, 'Y')
+                            else:
+                                # Wrong guess
+                                pass
+                                # TODO: not hit in tests
+                            i += 4
+
+                # Check am/pm
+                elif info.ampm(l[i]) is not None:
+                    value = info.ampm(l[i])
+                    val_is_ampm = self._ampm_valid(res.hour, res.ampm, fuzzy)
+
+                    if val_is_ampm:
+                        res.hour = self._adjust_ampm(res.hour, value)
+                        res.ampm = value
+
+                    elif fuzzy:
+                        skipped_idxs.append(i)
+
+                # Check for a timezone name
+                elif self._could_be_tzname(res.hour, res.tzname, res.tzoffset, l[i]):
+                    res.tzname = l[i]
+                    res.tzoffset = info.tzoffset(res.tzname)
+
+                    # Check for something like GMT+3, or BRST+3. Notice
+                    # that it doesn't mean "I am 3 hours after GMT", but
+                    # "my time +3 is GMT". If found, we reverse the
+                    # logic so that timezone parsing code will get it
+                    # right.
+                    if i + 1 < len_l and l[i + 1] in ('+', '-'):
+                        l[i + 1] = ('+', '-')[l[i + 1] == '+']
+                        res.tzoffset = None
+                        if info.utczone(res.tzname):
+                            # With something like GMT+3, the timezone
+                            # is *not* GMT.
+                            res.tzname = None
+
+                # Check for a numbered timezone
+                elif res.hour is not None and l[i] in ('+', '-'):
+                    signal = (-1, 1)[l[i] == '+']
+                    len_li = len(l[i + 1])
+
+                    # TODO: check that l[i + 1] is integer?
+                    if len_li == 4:
+                        # -0300
+                        hour_offset = int(l[i + 1][:2])
+                        min_offset = int(l[i + 1][2:])
+                    elif i + 2 < len_l and l[i + 2] == ':':
+                        # -03:00
+                        hour_offset = int(l[i + 1])
+                        min_offset = int(l[i + 3])  # TODO: Check that l[i+3] is minute-like?
+                        i += 2
+                    elif len_li <= 2:
+                        # -[0]3
+                        hour_offset = int(l[i + 1][:2])
+                        min_offset = 0
+                    else:
+                        raise ValueError(timestr)
+
+                    res.tzoffset = signal * (hour_offset * 3600 + min_offset * 60)
+
+                    # Look for a timezone name between parenthesis
+                    if (i + 5 < len_l and
+                            info.jump(l[i + 2]) and l[i + 3] == '(' and
+                            l[i + 5] == ')' and
+                            3 <= len(l[i + 4]) and
+                            self._could_be_tzname(res.hour, res.tzname,
+                                                  None, l[i + 4])):
+                        # -0300 (BRST)
+                        res.tzname = l[i + 4]
+                        i += 4
+
+                    i += 1
+
+                # Check jumps
+                elif not (info.jump(l[i]) or fuzzy):
+                    raise ValueError(timestr)
+
+                else:
+                    skipped_idxs.append(i)
+                i += 1
+
+            # Process year/month/day
+            year, month, day = ymd.resolve_ymd(yearfirst, dayfirst)
+
+            res.century_specified = ymd.century_specified
+            res.year = year
+            res.month = month
+            res.day = day
+
+        except (IndexError, ValueError):
+            return None, None
+
+        if not info.validate(res):
+            return None, None
+
+        if fuzzy_with_tokens:
+            skipped_tokens = self._recombine_skipped(l, skipped_idxs)
+            return res, tuple(skipped_tokens)
+        else:
+            return res, None
+
+    def _parse_numeric_token(self, tokens, idx, info, ymd, res, fuzzy):
+        # Token is a number
+        value_repr = tokens[idx]
+        try:
+            value = self._to_decimal(value_repr)
+        except Exception as e:
+            six.raise_from(ValueError('Unknown numeric token'), e)
+
+        len_li = len(value_repr)
+
+        len_l = len(tokens)
+
+        if (len(ymd) == 3 and len_li in (2, 4) and
+            res.hour is None and
+            (idx + 1 >= len_l or
+             (tokens[idx + 1] != ':' and
+              info.hms(tokens[idx + 1]) is None))):
+            # 19990101T23[59]
+            s = tokens[idx]
+            res.hour = int(s[:2])
+
+            if len_li == 4:
+                res.minute = int(s[2:])
+
+        elif len_li == 6 or (len_li > 6 and tokens[idx].find('.') == 6):
+            # YYMMDD or HHMMSS[.ss]
+            s = tokens[idx]
+
+            if not ymd and '.' not in tokens[idx]:
+                ymd.append(s[:2])
+                ymd.append(s[2:4])
+                ymd.append(s[4:])
+            else:
+                # 19990101T235959[.59]
+
+                # TODO: Check if res attributes already set.
+                res.hour = int(s[:2])
+                res.minute = int(s[2:4])
+                res.second, res.microsecond = self._parsems(s[4:])
+
+        elif len_li in (8, 12, 14):
+            # YYYYMMDD
+            s = tokens[idx]
+            ymd.append(s[:4], 'Y')
+            ymd.append(s[4:6])
+            ymd.append(s[6:8])
+
+            if len_li > 8:
+                res.hour = int(s[8:10])
+                res.minute = int(s[10:12])
+
+                if len_li > 12:
+                    res.second = int(s[12:])
+
+        elif self._find_hms_idx(idx, tokens, info, allow_jump=True) is not None:
+            # HH[ ]h or MM[ ]m or SS[.ss][ ]s
+            hms_idx = self._find_hms_idx(idx, tokens, info, allow_jump=True)
+            (idx, hms) = self._parse_hms(idx, tokens, info, hms_idx)
+            if hms is not None:
+                # TODO: checking that hour/minute/second are not
+                # already set?
+                self._assign_hms(res, value_repr, hms)
+
+        elif idx + 2 < len_l and tokens[idx + 1] == ':':
+            # HH:MM[:SS[.ss]]
+            res.hour = int(value)
+            value = self._to_decimal(tokens[idx + 2])  # TODO: try/except for this?
+            (res.minute, res.second) = self._parse_min_sec(value)
+
+            if idx + 4 < len_l and tokens[idx + 3] == ':':
+                res.second, res.microsecond = self._parsems(tokens[idx + 4])
+
+                idx += 2
+
+            idx += 2
+
+        elif idx + 1 < len_l and tokens[idx + 1] in ('-', '/', '.'):
+            sep = tokens[idx + 1]
+            ymd.append(value_repr)
+
+            if idx + 2 < len_l and not info.jump(tokens[idx + 2]):
+                if tokens[idx + 2].isdigit():
+                    # 01-01[-01]
+                    ymd.append(tokens[idx + 2])
+                else:
+                    # 01-Jan[-01]
+                    value = info.month(tokens[idx + 2])
+
+                    if value is not None:
+                        ymd.append(value, 'M')
+                    else:
+                        raise ValueError()
+
+                if idx + 3 < len_l and tokens[idx + 3] == sep:
+                    # We have three members
+                    value = info.month(tokens[idx + 4])
+
+                    if value is not None:
+                        ymd.append(value, 'M')
+                    else:
+                        ymd.append(tokens[idx + 4])
+                    idx += 2
+
+                idx += 1
+            idx += 1
+
+        elif idx + 1 >= len_l or info.jump(tokens[idx + 1]):
+            if idx + 2 < len_l and info.ampm(tokens[idx + 2]) is not None:
+                # 12 am
+                hour = int(value)
+                res.hour = self._adjust_ampm(hour, info.ampm(tokens[idx + 2]))
+                idx += 1
+            else:
+                # Year, month or day
+                ymd.append(value)
+            idx += 1
+
+        elif info.ampm(tokens[idx + 1]) is not None and (0 <= value < 24):
+            # 12am
+            hour = int(value)
+            res.hour = self._adjust_ampm(hour, info.ampm(tokens[idx + 1]))
+            idx += 1
+
+        elif ymd.could_be_day(value):
+            ymd.append(value)
+
+        elif not fuzzy:
+            raise ValueError()
+
+        return idx
+
+    def _find_hms_idx(self, idx, tokens, info, allow_jump):
+        len_l = len(tokens)
+
+        if idx+1 < len_l and info.hms(tokens[idx+1]) is not None:
+            # There is an "h", "m", or "s" label following this token.  We take
+            # assign the upcoming label to the current token.
+            # e.g. the "12" in 12h"
+            hms_idx = idx + 1
+
+        elif (allow_jump and idx+2 < len_l and tokens[idx+1] == ' ' and
+              info.hms(tokens[idx+2]) is not None):
+            # There is a space and then an "h", "m", or "s" label.
+            # e.g. the "12" in "12 h"
+            hms_idx = idx + 2
+
+        elif idx > 0 and info.hms(tokens[idx-1]) is not None:
+            # There is a "h", "m", or "s" preceding this token.  Since neither
+            # of the previous cases was hit, there is no label following this
+            # token, so we use the previous label.
+            # e.g. the "04" in "12h04"
+            hms_idx = idx-1
+
+        elif (1 < idx == len_l-1 and tokens[idx-1] == ' ' and
+              info.hms(tokens[idx-2]) is not None):
+            # If we are looking at the final token, we allow for a
+            # backward-looking check to skip over a space.
+            # TODO: Are we sure this is the right condition here?
+            hms_idx = idx - 2
+
+        else:
+            hms_idx = None
+
+        return hms_idx
+
+    def _assign_hms(self, res, value_repr, hms):
+        # See GH issue #427, fixing float rounding
+        value = self._to_decimal(value_repr)
+
+        if hms == 0:
+            # Hour
+            res.hour = int(value)
+            if value % 1:
+                res.minute = int(60*(value % 1))
+
+        elif hms == 1:
+            (res.minute, res.second) = self._parse_min_sec(value)
+
+        elif hms == 2:
+            (res.second, res.microsecond) = self._parsems(value_repr)
+
+    def _could_be_tzname(self, hour, tzname, tzoffset, token):
+        return (hour is not None and
+                tzname is None and
+                tzoffset is None and
+                len(token) <= 5 and
+                (all(x in string.ascii_uppercase for x in token)
+                 or token in self.info.UTCZONE))
+
+    def _ampm_valid(self, hour, ampm, fuzzy):
+        """
+        For fuzzy parsing, 'a' or 'am' (both valid English words)
+        may erroneously trigger the AM/PM flag. Deal with that
+        here.
+        """
+        val_is_ampm = True
+
+        # If there's already an AM/PM flag, this one isn't one.
+        if fuzzy and ampm is not None:
+            val_is_ampm = False
+
+        # If AM/PM is found and hour is not, raise a ValueError
+        if hour is None:
+            if fuzzy:
+                val_is_ampm = False
+            else:
+                raise ValueError('No hour specified with AM or PM flag.')
+        elif not 0 <= hour <= 12:
+            # If AM/PM is found, it's a 12 hour clock, so raise
+            # an error for invalid range
+            if fuzzy:
+                val_is_ampm = False
+            else:
+                raise ValueError('Invalid hour specified for 12-hour clock.')
+
+        return val_is_ampm
+
+    def _adjust_ampm(self, hour, ampm):
+        if hour < 12 and ampm == 1:
+            hour += 12
+        elif hour == 12 and ampm == 0:
+            hour = 0
+        return hour
+
+    def _parse_min_sec(self, value):
+        # TODO: Every usage of this function sets res.second to the return
+        # value. Are there any cases where second will be returned as None and
+        # we *don't* want to set res.second = None?
+        minute = int(value)
+        second = None
+
+        sec_remainder = value % 1
+        if sec_remainder:
+            second = int(60 * sec_remainder)
+        return (minute, second)
+
+    def _parse_hms(self, idx, tokens, info, hms_idx):
+        # TODO: Is this going to admit a lot of false-positives for when we
+        # just happen to have digits and "h", "m" or "s" characters in non-date
+        # text?  I guess hex hashes won't have that problem, but there's plenty
+        # of random junk out there.
+        if hms_idx is None:
+            hms = None
+            new_idx = idx
+        elif hms_idx > idx:
+            hms = info.hms(tokens[hms_idx])
+            new_idx = hms_idx
+        else:
+            # Looking backwards, increment one.
+            hms = info.hms(tokens[hms_idx]) + 1
+            new_idx = idx
+
+        return (new_idx, hms)
+
+    # ------------------------------------------------------------------
+    # Handling for individual tokens.  These are kept as methods instead
+    #  of functions for the sake of customizability via subclassing.
+
+    def _parsems(self, value):
+        """Parse a I[.F] seconds value into (seconds, microseconds)."""
+        if "." not in value:
+            return int(value), 0
+        else:
+            i, f = value.split(".")
+            return int(i), int(f.ljust(6, "0")[:6])
+
+    def _to_decimal(self, val):
+        try:
+            decimal_value = Decimal(val)
+            # See GH 662, edge case, infinite value should not be converted
+            #  via `_to_decimal`
+            if not decimal_value.is_finite():
+                raise ValueError("Converted decimal value is infinite or NaN")
+        except Exception as e:
+            msg = "Could not convert %s to decimal" % val
+            six.raise_from(ValueError(msg), e)
+        else:
+            return decimal_value
+
+    # ------------------------------------------------------------------
+    # Post-Parsing construction of datetime output.  These are kept as
+    #  methods instead of functions for the sake of customizability via
+    #  subclassing.
+
+    def _build_tzinfo(self, tzinfos, tzname, tzoffset):
+        if callable(tzinfos):
+            tzdata = tzinfos(tzname, tzoffset)
+        else:
+            tzdata = tzinfos.get(tzname)
+        # handle case where tzinfo is paased an options that returns None
+        # eg tzinfos = {'BRST' : None}
+        if isinstance(tzdata, datetime.tzinfo) or tzdata is None:
+            tzinfo = tzdata
+        elif isinstance(tzdata, text_type):
+            tzinfo = tz.tzstr(tzdata)
+        elif isinstance(tzdata, integer_types):
+            tzinfo = tz.tzoffset(tzname, tzdata)
+        else:
+            raise TypeError("Offset must be tzinfo subclass, tz string, "
+                            "or int offset.")
+        return tzinfo
+
+    def _build_tzaware(self, naive, res, tzinfos):
+        if (callable(tzinfos) or (tzinfos and res.tzname in tzinfos)):
+            tzinfo = self._build_tzinfo(tzinfos, res.tzname, res.tzoffset)
+            aware = naive.replace(tzinfo=tzinfo)
+            aware = self._assign_tzname(aware, res.tzname)
+
+        elif res.tzname and res.tzname in time.tzname:
+            aware = naive.replace(tzinfo=tz.tzlocal())
+
+            # Handle ambiguous local datetime
+            aware = self._assign_tzname(aware, res.tzname)
+
+            # This is mostly relevant for winter GMT zones parsed in the UK
+            if (aware.tzname() != res.tzname and
+                    res.tzname in self.info.UTCZONE):
+                aware = aware.replace(tzinfo=tz.UTC)
+
+        elif res.tzoffset == 0:
+            aware = naive.replace(tzinfo=tz.UTC)
+
+        elif res.tzoffset:
+            aware = naive.replace(tzinfo=tz.tzoffset(res.tzname, res.tzoffset))
+
+        elif not res.tzname and not res.tzoffset:
+            # i.e. no timezone information was found.
+            aware = naive
+
+        elif res.tzname:
+            # tz-like string was parsed but we don't know what to do
+            # with it
+            warnings.warn("tzname {tzname} identified but not understood.  "
+                          "Pass `tzinfos` argument in order to correctly "
+                          "return a timezone-aware datetime.  In a future "
+                          "version, this will raise an "
+                          "exception.".format(tzname=res.tzname),
+                          category=UnknownTimezoneWarning)
+            aware = naive
+
+        return aware
+
+    def _build_naive(self, res, default):
+        repl = {}
+        for attr in ("year", "month", "day", "hour",
+                     "minute", "second", "microsecond"):
+            value = getattr(res, attr)
+            if value is not None:
+                repl[attr] = value
+
+        if 'day' not in repl:
+            # If the default day exceeds the last day of the month, fall back
+            # to the end of the month.
+            cyear = default.year if res.year is None else res.year
+            cmonth = default.month if res.month is None else res.month
+            cday = default.day if res.day is None else res.day
+
+            if cday > monthrange(cyear, cmonth)[1]:
+                repl['day'] = monthrange(cyear, cmonth)[1]
+
+        naive = default.replace(**repl)
+
+        if res.weekday is not None and not res.day:
+            naive = naive + relativedelta.relativedelta(weekday=res.weekday)
+
+        return naive
+
+    def _assign_tzname(self, dt, tzname):
+        if dt.tzname() != tzname:
+            new_dt = tz.enfold(dt, fold=1)
+            if new_dt.tzname() == tzname:
+                return new_dt
+
+        return dt
+
+    def _recombine_skipped(self, tokens, skipped_idxs):
+        """
+        >>> tokens = ["foo", " ", "bar", " ", "19June2000", "baz"]
+        >>> skipped_idxs = [0, 1, 2, 5]
+        >>> _recombine_skipped(tokens, skipped_idxs)
+        ["foo bar", "baz"]
+        """
+        skipped_tokens = []
+        for i, idx in enumerate(sorted(skipped_idxs)):
+            if i > 0 and idx - 1 == skipped_idxs[i - 1]:
+                skipped_tokens[-1] = skipped_tokens[-1] + tokens[idx]
+            else:
+                skipped_tokens.append(tokens[idx])
+
+        return skipped_tokens
+
+
+DEFAULTPARSER = parser()
+
+
+def parse(timestr, parserinfo=None, **kwargs):
+    """
+
+    Parse a string in one of the supported formats, using the
+    ``parserinfo`` parameters.
+
+    :param timestr:
+        A string containing a date/time stamp.
+
+    :param parserinfo:
+        A :class:`parserinfo` object containing parameters for the parser.
+        If ``None``, the default arguments to the :class:`parserinfo`
+        constructor are used.
+
+    The ``**kwargs`` parameter takes the following keyword arguments:
+
+    :param default:
+        The default datetime object, if this is a datetime object and not
+        ``None``, elements specified in ``timestr`` replace elements in the
+        default object.
+
+    :param ignoretz:
+        If set ``True``, time zones in parsed strings are ignored and a naive
+        :class:`datetime` object is returned.
+
+    :param tzinfos:
+        Additional time zone names / aliases which may be present in the
+        string. This argument maps time zone names (and optionally offsets
+        from those time zones) to time zones. This parameter can be a
+        dictionary with timezone aliases mapping time zone names to time
+        zones or a function taking two parameters (``tzname`` and
+        ``tzoffset``) and returning a time zone.
+
+        The timezones to which the names are mapped can be an integer
+        offset from UTC in seconds or a :class:`tzinfo` object.
+
+        .. doctest::
+           :options: +NORMALIZE_WHITESPACE
+
+            >>> from dateutil.parser import parse
+            >>> from dateutil.tz import gettz
+            >>> tzinfos = {"BRST": -7200, "CST": gettz("America/Chicago")}
+            >>> parse("2012-01-19 17:21:00 BRST", tzinfos=tzinfos)
+            datetime.datetime(2012, 1, 19, 17, 21, tzinfo=tzoffset(u'BRST', -7200))
+            >>> parse("2012-01-19 17:21:00 CST", tzinfos=tzinfos)
+            datetime.datetime(2012, 1, 19, 17, 21,
+                              tzinfo=tzfile('/usr/share/zoneinfo/America/Chicago'))
+
+        This parameter is ignored if ``ignoretz`` is set.
+
+    :param dayfirst:
+        Whether to interpret the first value in an ambiguous 3-integer date
+        (e.g. 01/05/09) as the day (``True``) or month (``False``). If
+        ``yearfirst`` is set to ``True``, this distinguishes between YDM and
+        YMD. If set to ``None``, this value is retrieved from the current
+        :class:`parserinfo` object (which itself defaults to ``False``).
+
+    :param yearfirst:
+        Whether to interpret the first value in an ambiguous 3-integer date
+        (e.g. 01/05/09) as the year. If ``True``, the first number is taken to
+        be the year, otherwise the last number is taken to be the year. If
+        this is set to ``None``, the value is retrieved from the current
+        :class:`parserinfo` object (which itself defaults to ``False``).
+
+    :param fuzzy:
+        Whether to allow fuzzy parsing, allowing for string like "Today is
+        January 1, 2047 at 8:21:00AM".
+
+    :param fuzzy_with_tokens:
+        If ``True``, ``fuzzy`` is automatically set to True, and the parser
+        will return a tuple where the first element is the parsed
+        :class:`datetime.datetime` datetimestamp and the second element is
+        a tuple containing the portions of the string which were ignored:
+
+        .. doctest::
+
+            >>> from dateutil.parser import parse
+            >>> parse("Today is January 1, 2047 at 8:21:00AM", fuzzy_with_tokens=True)
+            (datetime.datetime(2047, 1, 1, 8, 21), (u'Today is ', u' ', u'at '))
+
+    :return:
+        Returns a :class:`datetime.datetime` object or, if the
+        ``fuzzy_with_tokens`` option is ``True``, returns a tuple, the
+        first element being a :class:`datetime.datetime` object, the second
+        a tuple containing the fuzzy tokens.
+
+    :raises ParserError:
+        Raised for invalid or unknown string formats, if the provided
+        :class:`tzinfo` is not in a valid format, or if an invalid date would
+        be created.
+
+    :raises OverflowError:
+        Raised if the parsed date exceeds the largest valid C integer on
+        your system.
+    """
+    if parserinfo:
+        return parser(parserinfo).parse(timestr, **kwargs)
+    else:
+        return DEFAULTPARSER.parse(timestr, **kwargs)
+
+
+class _tzparser(object):
+
+    class _result(_resultbase):
+
+        __slots__ = ["stdabbr", "stdoffset", "dstabbr", "dstoffset",
+                     "start", "end"]
+
+        class _attr(_resultbase):
+            __slots__ = ["month", "week", "weekday",
+                         "yday", "jyday", "day", "time"]
+
+        def __repr__(self):
+            return self._repr("")
+
+        def __init__(self):
+            _resultbase.__init__(self)
+            self.start = self._attr()
+            self.end = self._attr()
+
+    def parse(self, tzstr):
+        res = self._result()
+        l = [x for x in re.split(r'([,:.]|[a-zA-Z]+|[0-9]+)',tzstr) if x]
+        used_idxs = list()
+        try:
+
+            len_l = len(l)
+
+            i = 0
+            while i < len_l:
+                # BRST+3[BRDT[+2]]
+                j = i
+                while j < len_l and not [x for x in l[j]
+                                         if x in "0123456789:,-+"]:
+                    j += 1
+                if j != i:
+                    if not res.stdabbr:
+                        offattr = "stdoffset"
+                        res.stdabbr = "".join(l[i:j])
+                    else:
+                        offattr = "dstoffset"
+                        res.dstabbr = "".join(l[i:j])
+
+                    for ii in range(j):
+                        used_idxs.append(ii)
+                    i = j
+                    if (i < len_l and (l[i] in ('+', '-') or l[i][0] in
+                                       "0123456789")):
+                        if l[i] in ('+', '-'):
+                            # Yes, that's right.  See the TZ variable
+                            # documentation.
+                            signal = (1, -1)[l[i] == '+']
+                            used_idxs.append(i)
+                            i += 1
+                        else:
+                            signal = -1
+                        len_li = len(l[i])
+                        if len_li == 4:
+                            # -0300
+                            setattr(res, offattr, (int(l[i][:2]) * 3600 +
+                                                   int(l[i][2:]) * 60) * signal)
+                        elif i + 1 < len_l and l[i + 1] == ':':
+                            # -03:00
+                            setattr(res, offattr,
+                                    (int(l[i]) * 3600 +
+                                     int(l[i + 2]) * 60) * signal)
+                            used_idxs.append(i)
+                            i += 2
+                        elif len_li <= 2:
+                            # -[0]3
+                            setattr(res, offattr,
+                                    int(l[i][:2]) * 3600 * signal)
+                        else:
+                            return None
+                        used_idxs.append(i)
+                        i += 1
+                    if res.dstabbr:
+                        break
+                else:
+                    break
+
+
+            if i < len_l:
+                for j in range(i, len_l):
+                    if l[j] == ';':
+                        l[j] = ','
+
+                assert l[i] == ','
+
+                i += 1
+
+            if i >= len_l:
+                pass
+            elif (8 <= l.count(',') <= 9 and
+                  not [y for x in l[i:] if x != ','
+                       for y in x if y not in "0123456789+-"]):
+                # GMT0BST,3,0,30,3600,10,0,26,7200[,3600]
+                for x in (res.start, res.end):
+                    x.month = int(l[i])
+                    used_idxs.append(i)
+                    i += 2
+                    if l[i] == '-':
+                        value = int(l[i + 1]) * -1
+                        used_idxs.append(i)
+                        i += 1
+                    else:
+                        value = int(l[i])
+                    used_idxs.append(i)
+                    i += 2
+                    if value:
+                        x.week = value
+                        x.weekday = (int(l[i]) - 1) % 7
+                    else:
+                        x.day = int(l[i])
+                    used_idxs.append(i)
+                    i += 2
+                    x.time = int(l[i])
+                    used_idxs.append(i)
+                    i += 2
+                if i < len_l:
+                    if l[i] in ('-', '+'):
+                        signal = (-1, 1)[l[i] == "+"]
+                        used_idxs.append(i)
+                        i += 1
+                    else:
+                        signal = 1
+                    used_idxs.append(i)
+                    res.dstoffset = (res.stdoffset + int(l[i]) * signal)
+
+                # This was a made-up format that is not in normal use
+                warn(('Parsed time zone "%s"' % tzstr) +
+                     'is in a non-standard dateutil-specific format, which ' +
+                     'is now deprecated; support for parsing this format ' +
+                     'will be removed in future versions. It is recommended ' +
+                     'that you switch to a standard format like the GNU ' +
+                     'TZ variable format.', tz.DeprecatedTzFormatWarning)
+            elif (l.count(',') == 2 and l[i:].count('/') <= 2 and
+                  not [y for x in l[i:] if x not in (',', '/', 'J', 'M',
+                                                     '.', '-', ':')
+                       for y in x if y not in "0123456789"]):
+                for x in (res.start, res.end):
+                    if l[i] == 'J':
+                        # non-leap year day (1 based)
+                        used_idxs.append(i)
+                        i += 1
+                        x.jyday = int(l[i])
+                    elif l[i] == 'M':
+                        # month[-.]week[-.]weekday
+                        used_idxs.append(i)
+                        i += 1
+                        x.month = int(l[i])
+                        used_idxs.append(i)
+                        i += 1
+                        assert l[i] in ('-', '.')
+                        used_idxs.append(i)
+                        i += 1
+                        x.week = int(l[i])
+                        if x.week == 5:
+                            x.week = -1
+                        used_idxs.append(i)
+                        i += 1
+                        assert l[i] in ('-', '.')
+                        used_idxs.append(i)
+                        i += 1
+                        x.weekday = (int(l[i]) - 1) % 7
+                    else:
+                        # year day (zero based)
+                        x.yday = int(l[i]) + 1
+
+                    used_idxs.append(i)
+                    i += 1
+
+                    if i < len_l and l[i] == '/':
+                        used_idxs.append(i)
+                        i += 1
+                        # start time
+                        len_li = len(l[i])
+                        if len_li == 4:
+                            # -0300
+                            x.time = (int(l[i][:2]) * 3600 +
+                                      int(l[i][2:]) * 60)
+                        elif i + 1 < len_l and l[i + 1] == ':':
+                            # -03:00
+                            x.time = int(l[i]) * 3600 + int(l[i + 2]) * 60
+                            used_idxs.append(i)
+                            i += 2
+                            if i + 1 < len_l and l[i + 1] == ':':
+                                used_idxs.append(i)
+                                i += 2
+                                x.time += int(l[i])
+                        elif len_li <= 2:
+                            # -[0]3
+                            x.time = (int(l[i][:2]) * 3600)
+                        else:
+                            return None
+                        used_idxs.append(i)
+                        i += 1
+
+                    assert i == len_l or l[i] == ','
+
+                    i += 1
+
+                assert i >= len_l
+
+        except (IndexError, ValueError, AssertionError):
+            return None
+
+        unused_idxs = set(range(len_l)).difference(used_idxs)
+        res.any_unused_tokens = not {l[n] for n in unused_idxs}.issubset({",",":"})
+        return res
+
+
+DEFAULTTZPARSER = _tzparser()
+
+
+def _parsetz(tzstr):
+    return DEFAULTTZPARSER.parse(tzstr)
+
+
+class ParserError(ValueError):
+    """Exception subclass used for any failure to parse a datetime string.
+
+    This is a subclass of :py:exc:`ValueError`, and should be raised any time
+    earlier versions of ``dateutil`` would have raised ``ValueError``.
+
+    .. versionadded:: 2.8.1
+    """
+    def __str__(self):
+        try:
+            return self.args[0] % self.args[1:]
+        except (TypeError, IndexError):
+            return super(ParserError, self).__str__()
+
+    def __repr__(self):
+        args = ", ".join("'%s'" % arg for arg in self.args)
+        return "%s(%s)" % (self.__class__.__name__, args)
+
+
+class UnknownTimezoneWarning(RuntimeWarning):
+    """Raised when the parser finds a timezone it cannot parse into a tzinfo.
+
+    .. versionadded:: 2.7.0
+    """
+# vim:ts=4:sw=4:et

env-llmeval/lib/python3.10/site-packages/dateutil/parser/isoparser.py

@@ -0,0 +1,416 @@
+# -*- coding: utf-8 -*-
+"""
+This module offers a parser for ISO-8601 strings
+
+It is intended to support all valid date, time and datetime formats per the
+ISO-8601 specification.
+
+..versionadded:: 2.7.0
+"""
+from datetime import datetime, timedelta, time, date
+import calendar
+from dateutil import tz
+
+from functools import wraps
+
+import re
+import six
+
+__all__ = ["isoparse", "isoparser"]
+
+
+def _takes_ascii(f):
+    @wraps(f)
+    def func(self, str_in, *args, **kwargs):
+        # If it's a stream, read the whole thing
+        str_in = getattr(str_in, 'read', lambda: str_in)()
+
+        # If it's unicode, turn it into bytes, since ISO-8601 only covers ASCII
+        if isinstance(str_in, six.text_type):
+            # ASCII is the same in UTF-8
+            try:
+                str_in = str_in.encode('ascii')
+            except UnicodeEncodeError as e:
+                msg = 'ISO-8601 strings should contain only ASCII characters'
+                six.raise_from(ValueError(msg), e)
+
+        return f(self, str_in, *args, **kwargs)
+
+    return func
+
+
+class isoparser(object):
+    def __init__(self, sep=None):
+        """
+        :param sep:
+            A single character that separates date and time portions. If
+            ``None``, the parser will accept any single character.
+            For strict ISO-8601 adherence, pass ``'T'``.
+        """
+        if sep is not None:
+            if (len(sep) != 1 or ord(sep) >= 128 or sep in '0123456789'):
+                raise ValueError('Separator must be a single, non-numeric ' +
+                                 'ASCII character')
+
+            sep = sep.encode('ascii')
+
+        self._sep = sep
+
+    @_takes_ascii
+    def isoparse(self, dt_str):
+        """
+        Parse an ISO-8601 datetime string into a :class:`datetime.datetime`.
+
+        An ISO-8601 datetime string consists of a date portion, followed
+        optionally by a time portion - the date and time portions are separated
+        by a single character separator, which is ``T`` in the official
+        standard. Incomplete date formats (such as ``YYYY-MM``) may *not* be
+        combined with a time portion.
+
+        Supported date formats are:
+
+        Common:
+
+        - ``YYYY``
+        - ``YYYY-MM``
+        - ``YYYY-MM-DD`` or ``YYYYMMDD``
+
+        Uncommon:
+
+        - ``YYYY-Www`` or ``YYYYWww`` - ISO week (day defaults to 0)
+        - ``YYYY-Www-D`` or ``YYYYWwwD`` - ISO week and day
+
+        The ISO week and day numbering follows the same logic as
+        :func:`datetime.date.isocalendar`.
+
+        Supported time formats are:
+
+        - ``hh``
+        - ``hh:mm`` or ``hhmm``
+        - ``hh:mm:ss`` or ``hhmmss``
+        - ``hh:mm:ss.ssssss`` (Up to 6 sub-second digits)
+
+        Midnight is a special case for `hh`, as the standard supports both
+        00:00 and 24:00 as a representation. The decimal separator can be
+        either a dot or a comma.
+
+
+        .. caution::
+
+            Support for fractional components other than seconds is part of the
+            ISO-8601 standard, but is not currently implemented in this parser.
+
+        Supported time zone offset formats are:
+
+        - `Z` (UTC)
+        - `±HH:MM`
+        - `±HHMM`
+        - `±HH`
+
+        Offsets will be represented as :class:`dateutil.tz.tzoffset` objects,
+        with the exception of UTC, which will be represented as
+        :class:`dateutil.tz.tzutc`. Time zone offsets equivalent to UTC (such
+        as `+00:00`) will also be represented as :class:`dateutil.tz.tzutc`.
+
+        :param dt_str:
+            A string or stream containing only an ISO-8601 datetime string
+
+        :return:
+            Returns a :class:`datetime.datetime` representing the string.
+            Unspecified components default to their lowest value.
+
+        .. warning::
+
+            As of version 2.7.0, the strictness of the parser should not be
+            considered a stable part of the contract. Any valid ISO-8601 string
+            that parses correctly with the default settings will continue to
+            parse correctly in future versions, but invalid strings that
+            currently fail (e.g. ``2017-01-01T00:00+00:00:00``) are not
+            guaranteed to continue failing in future versions if they encode
+            a valid date.
+
+        .. versionadded:: 2.7.0
+        """
+        components, pos = self._parse_isodate(dt_str)
+
+        if len(dt_str) > pos:
+            if self._sep is None or dt_str[pos:pos + 1] == self._sep:
+                components += self._parse_isotime(dt_str[pos + 1:])
+            else:
+                raise ValueError('String contains unknown ISO components')
+
+        if len(components) > 3 and components[3] == 24:
+            components[3] = 0
+            return datetime(*components) + timedelta(days=1)
+
+        return datetime(*components)
+
+    @_takes_ascii
+    def parse_isodate(self, datestr):
+        """
+        Parse the date portion of an ISO string.
+
+        :param datestr:
+            The string portion of an ISO string, without a separator
+
+        :return:
+            Returns a :class:`datetime.date` object
+        """
+        components, pos = self._parse_isodate(datestr)
+        if pos < len(datestr):
+            raise ValueError('String contains unknown ISO ' +
+                             'components: {!r}'.format(datestr.decode('ascii')))
+        return date(*components)
+
+    @_takes_ascii
+    def parse_isotime(self, timestr):
+        """
+        Parse the time portion of an ISO string.
+
+        :param timestr:
+            The time portion of an ISO string, without a separator
+
+        :return:
+            Returns a :class:`datetime.time` object
+        """
+        components = self._parse_isotime(timestr)
+        if components[0] == 24:
+            components[0] = 0
+        return time(*components)
+
+    @_takes_ascii
+    def parse_tzstr(self, tzstr, zero_as_utc=True):
+        """
+        Parse a valid ISO time zone string.
+
+        See :func:`isoparser.isoparse` for details on supported formats.
+
+        :param tzstr:
+            A string representing an ISO time zone offset
+
+        :param zero_as_utc:
+            Whether to return :class:`dateutil.tz.tzutc` for zero-offset zones
+
+        :return:
+            Returns :class:`dateutil.tz.tzoffset` for offsets and
+            :class:`dateutil.tz.tzutc` for ``Z`` and (if ``zero_as_utc`` is
+            specified) offsets equivalent to UTC.
+        """
+        return self._parse_tzstr(tzstr, zero_as_utc=zero_as_utc)
+
+    # Constants
+    _DATE_SEP = b'-'
+    _TIME_SEP = b':'
+    _FRACTION_REGEX = re.compile(b'[\\.,]([0-9]+)')
+
+    def _parse_isodate(self, dt_str):
+        try:
+            return self._parse_isodate_common(dt_str)
+        except ValueError:
+            return self._parse_isodate_uncommon(dt_str)
+
+    def _parse_isodate_common(self, dt_str):
+        len_str = len(dt_str)
+        components = [1, 1, 1]
+
+        if len_str < 4:
+            raise ValueError('ISO string too short')
+
+        # Year
+        components[0] = int(dt_str[0:4])
+        pos = 4
+        if pos >= len_str:
+            return components, pos
+
+        has_sep = dt_str[pos:pos + 1] == self._DATE_SEP
+        if has_sep:
+            pos += 1
+
+        # Month
+        if len_str - pos < 2:
+            raise ValueError('Invalid common month')
+
+        components[1] = int(dt_str[pos:pos + 2])
+        pos += 2
+
+        if pos >= len_str:
+            if has_sep:
+                return components, pos
+            else:
+                raise ValueError('Invalid ISO format')
+
+        if has_sep:
+            if dt_str[pos:pos + 1] != self._DATE_SEP:
+                raise ValueError('Invalid separator in ISO string')
+            pos += 1
+
+        # Day
+        if len_str - pos < 2:
+            raise ValueError('Invalid common day')
+        components[2] = int(dt_str[pos:pos + 2])
+        return components, pos + 2
+
+    def _parse_isodate_uncommon(self, dt_str):
+        if len(dt_str) < 4:
+            raise ValueError('ISO string too short')
+
+        # All ISO formats start with the year
+        year = int(dt_str[0:4])
+
+        has_sep = dt_str[4:5] == self._DATE_SEP
+
+        pos = 4 + has_sep       # Skip '-' if it's there
+        if dt_str[pos:pos + 1] == b'W':
+            # YYYY-?Www-?D?
+            pos += 1
+            weekno = int(dt_str[pos:pos + 2])
+            pos += 2
+
+            dayno = 1
+            if len(dt_str) > pos:
+                if (dt_str[pos:pos + 1] == self._DATE_SEP) != has_sep:
+                    raise ValueError('Inconsistent use of dash separator')
+
+                pos += has_sep
+
+                dayno = int(dt_str[pos:pos + 1])
+                pos += 1
+
+            base_date = self._calculate_weekdate(year, weekno, dayno)
+        else:
+            # YYYYDDD or YYYY-DDD
+            if len(dt_str) - pos < 3:
+                raise ValueError('Invalid ordinal day')
+
+            ordinal_day = int(dt_str[pos:pos + 3])
+            pos += 3
+
+            if ordinal_day < 1 or ordinal_day > (365 + calendar.isleap(year)):
+                raise ValueError('Invalid ordinal day' +
+                                 ' {} for year {}'.format(ordinal_day, year))
+
+            base_date = date(year, 1, 1) + timedelta(days=ordinal_day - 1)
+
+        components = [base_date.year, base_date.month, base_date.day]
+        return components, pos
+
+    def _calculate_weekdate(self, year, week, day):
+        """
+        Calculate the day of corresponding to the ISO year-week-day calendar.
+
+        This function is effectively the inverse of
+        :func:`datetime.date.isocalendar`.
+
+        :param year:
+            The year in the ISO calendar
+
+        :param week:
+            The week in the ISO calendar - range is [1, 53]
+
+        :param day:
+            The day in the ISO calendar - range is [1 (MON), 7 (SUN)]
+
+        :return:
+            Returns a :class:`datetime.date`
+        """
+        if not 0 < week < 54:
+            raise ValueError('Invalid week: {}'.format(week))
+
+        if not 0 < day < 8:     # Range is 1-7
+            raise ValueError('Invalid weekday: {}'.format(day))
+
+        # Get week 1 for the specific year:
+        jan_4 = date(year, 1, 4)   # Week 1 always has January 4th in it
+        week_1 = jan_4 - timedelta(days=jan_4.isocalendar()[2] - 1)
+
+        # Now add the specific number of weeks and days to get what we want
+        week_offset = (week - 1) * 7 + (day - 1)
+        return week_1 + timedelta(days=week_offset)
+
+    def _parse_isotime(self, timestr):
+        len_str = len(timestr)
+        components = [0, 0, 0, 0, None]
+        pos = 0
+        comp = -1
+
+        if len_str < 2:
+            raise ValueError('ISO time too short')
+
+        has_sep = False
+
+        while pos < len_str and comp < 5:
+            comp += 1
+
+            if timestr[pos:pos + 1] in b'-+Zz':
+                # Detect time zone boundary
+                components[-1] = self._parse_tzstr(timestr[pos:])
+                pos = len_str
+                break
+
+            if comp == 1 and timestr[pos:pos+1] == self._TIME_SEP:
+                has_sep = True
+                pos += 1
+            elif comp == 2 and has_sep:
+                if timestr[pos:pos+1] != self._TIME_SEP:
+                    raise ValueError('Inconsistent use of colon separator')
+                pos += 1
+
+            if comp < 3:
+                # Hour, minute, second
+                components[comp] = int(timestr[pos:pos + 2])
+                pos += 2
+
+            if comp == 3:
+                # Fraction of a second
+                frac = self._FRACTION_REGEX.match(timestr[pos:])
+                if not frac:
+                    continue
+
+                us_str = frac.group(1)[:6]  # Truncate to microseconds
+                components[comp] = int(us_str) * 10**(6 - len(us_str))
+                pos += len(frac.group())
+
+        if pos < len_str:
+            raise ValueError('Unused components in ISO string')
+
+        if components[0] == 24:
+            # Standard supports 00:00 and 24:00 as representations of midnight
+            if any(component != 0 for component in components[1:4]):
+                raise ValueError('Hour may only be 24 at 24:00:00.000')
+
+        return components
+
+    def _parse_tzstr(self, tzstr, zero_as_utc=True):
+        if tzstr == b'Z' or tzstr == b'z':
+            return tz.UTC
+
+        if len(tzstr) not in {3, 5, 6}:
+            raise ValueError('Time zone offset must be 1, 3, 5 or 6 characters')
+
+        if tzstr[0:1] == b'-':
+            mult = -1
+        elif tzstr[0:1] == b'+':
+            mult = 1
+        else:
+            raise ValueError('Time zone offset requires sign')
+
+        hours = int(tzstr[1:3])
+        if len(tzstr) == 3:
+            minutes = 0
+        else:
+            minutes = int(tzstr[(4 if tzstr[3:4] == self._TIME_SEP else 3):])
+
+        if zero_as_utc and hours == 0 and minutes == 0:
+            return tz.UTC
+        else:
+            if minutes > 59:
+                raise ValueError('Invalid minutes in time zone offset')
+
+            if hours > 23:
+                raise ValueError('Invalid hours in time zone offset')
+
+            return tz.tzoffset(None, mult * (hours * 60 + minutes) * 60)
+
+
+DEFAULT_ISOPARSER = isoparser()
+isoparse = DEFAULT_ISOPARSER.isoparse

env-llmeval/lib/python3.10/site-packages/dateutil/zoneinfo/__init__.py

@@ -0,0 +1,167 @@
+# -*- coding: utf-8 -*-
+import warnings
+import json
+
+from tarfile import TarFile
+from pkgutil import get_data
+from io import BytesIO
+
+from dateutil.tz import tzfile as _tzfile
+
+__all__ = ["get_zonefile_instance", "gettz", "gettz_db_metadata"]
+
+ZONEFILENAME = "dateutil-zoneinfo.tar.gz"
+METADATA_FN = 'METADATA'
+
+
+class tzfile(_tzfile):
+    def __reduce__(self):
+        return (gettz, (self._filename,))
+
+
+def getzoneinfofile_stream():
+    try:
+        return BytesIO(get_data(__name__, ZONEFILENAME))
+    except IOError as e:  # TODO  switch to FileNotFoundError?
+        warnings.warn("I/O error({0}): {1}".format(e.errno, e.strerror))
+        return None
+
+
+class ZoneInfoFile(object):
+    def __init__(self, zonefile_stream=None):
+        if zonefile_stream is not None:
+            with TarFile.open(fileobj=zonefile_stream) as tf:
+                self.zones = {zf.name: tzfile(tf.extractfile(zf), filename=zf.name)
+                              for zf in tf.getmembers()
+                              if zf.isfile() and zf.name != METADATA_FN}
+                # deal with links: They'll point to their parent object. Less
+                # waste of memory
+                links = {zl.name: self.zones[zl.linkname]
+                         for zl in tf.getmembers() if
+                         zl.islnk() or zl.issym()}
+                self.zones.update(links)
+                try:
+                    metadata_json = tf.extractfile(tf.getmember(METADATA_FN))
+                    metadata_str = metadata_json.read().decode('UTF-8')
+                    self.metadata = json.loads(metadata_str)
+                except KeyError:
+                    # no metadata in tar file
+                    self.metadata = None
+        else:
+            self.zones = {}
+            self.metadata = None
+
+    def get(self, name, default=None):
+        """
+        Wrapper for :func:`ZoneInfoFile.zones.get`. This is a convenience method
+        for retrieving zones from the zone dictionary.
+
+        :param name:
+            The name of the zone to retrieve. (Generally IANA zone names)
+
+        :param default:
+            The value to return in the event of a missing key.
+
+        .. versionadded:: 2.6.0
+
+        """
+        return self.zones.get(name, default)
+
+
+# The current API has gettz as a module function, although in fact it taps into
+# a stateful class. So as a workaround for now, without changing the API, we
+# will create a new "global" class instance the first time a user requests a
+# timezone. Ugly, but adheres to the api.
+#
+# TODO: Remove after deprecation period.
+_CLASS_ZONE_INSTANCE = []
+
+
+def get_zonefile_instance(new_instance=False):
+    """
+    This is a convenience function which provides a :class:`ZoneInfoFile`
+    instance using the data provided by the ``dateutil`` package. By default, it
+    caches a single instance of the ZoneInfoFile object and returns that.
+
+    :param new_instance:
+        If ``True``, a new instance of :class:`ZoneInfoFile` is instantiated and
+        used as the cached instance for the next call. Otherwise, new instances
+        are created only as necessary.
+
+    :return:
+        Returns a :class:`ZoneInfoFile` object.
+
+    .. versionadded:: 2.6
+    """
+    if new_instance:
+        zif = None
+    else:
+        zif = getattr(get_zonefile_instance, '_cached_instance', None)
+
+    if zif is None:
+        zif = ZoneInfoFile(getzoneinfofile_stream())
+
+        get_zonefile_instance._cached_instance = zif
+
+    return zif
+
+
+def gettz(name):
+    """
+    This retrieves a time zone from the local zoneinfo tarball that is packaged
+    with dateutil.
+
+    :param name:
+        An IANA-style time zone name, as found in the zoneinfo file.
+
+    :return:
+        Returns a :class:`dateutil.tz.tzfile` time zone object.
+
+    .. warning::
+        It is generally inadvisable to use this function, and it is only
+        provided for API compatibility with earlier versions. This is *not*
+        equivalent to ``dateutil.tz.gettz()``, which selects an appropriate
+        time zone based on the inputs, favoring system zoneinfo. This is ONLY
+        for accessing the dateutil-specific zoneinfo (which may be out of
+        date compared to the system zoneinfo).
+
+    .. deprecated:: 2.6
+        If you need to use a specific zoneinfofile over the system zoneinfo,
+        instantiate a :class:`dateutil.zoneinfo.ZoneInfoFile` object and call
+        :func:`dateutil.zoneinfo.ZoneInfoFile.get(name)` instead.
+
+        Use :func:`get_zonefile_instance` to retrieve an instance of the
+        dateutil-provided zoneinfo.
+    """
+    warnings.warn("zoneinfo.gettz() will be removed in future versions, "
+                  "to use the dateutil-provided zoneinfo files, instantiate a "
+                  "ZoneInfoFile object and use ZoneInfoFile.zones.get() "
+                  "instead. See the documentation for details.",
+                  DeprecationWarning)
+
+    if len(_CLASS_ZONE_INSTANCE) == 0:
+        _CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
+    return _CLASS_ZONE_INSTANCE[0].zones.get(name)
+
+
+def gettz_db_metadata():
+    """ Get the zonefile metadata
+
+    See `zonefile_metadata`_
+
+    :returns:
+        A dictionary with the database metadata
+
+    .. deprecated:: 2.6
+        See deprecation warning in :func:`zoneinfo.gettz`. To get metadata,
+        query the attribute ``zoneinfo.ZoneInfoFile.metadata``.
+    """
+    warnings.warn("zoneinfo.gettz_db_metadata() will be removed in future "
+                  "versions, to use the dateutil-provided zoneinfo files, "
+                  "ZoneInfoFile object and query the 'metadata' attribute "
+                  "instead. See the documentation for details.",
+                  DeprecationWarning)
+
+    if len(_CLASS_ZONE_INSTANCE) == 0:
+        _CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
+    return _CLASS_ZONE_INSTANCE[0].metadata

env-llmeval/lib/python3.10/site-packages/dateutil/zoneinfo/rebuild.py

@@ -0,0 +1,75 @@
+import logging
+import os
+import tempfile
+import shutil
+import json
+from subprocess import check_call, check_output
+from tarfile import TarFile
+
+from dateutil.zoneinfo import METADATA_FN, ZONEFILENAME
+
+
+def rebuild(filename, tag=None, format="gz", zonegroups=[], metadata=None):
+    """Rebuild the internal timezone info in dateutil/zoneinfo/zoneinfo*tar*
+
+    filename is the timezone tarball from ``ftp.iana.org/tz``.
+
+    """
+    tmpdir = tempfile.mkdtemp()
+    zonedir = os.path.join(tmpdir, "zoneinfo")
+    moduledir = os.path.dirname(__file__)
+    try:
+        with TarFile.open(filename) as tf:
+            for name in zonegroups:
+                tf.extract(name, tmpdir)
+            filepaths = [os.path.join(tmpdir, n) for n in zonegroups]
+
+            _run_zic(zonedir, filepaths)
+
+        # write metadata file
+        with open(os.path.join(zonedir, METADATA_FN), 'w') as f:
+            json.dump(metadata, f, indent=4, sort_keys=True)
+        target = os.path.join(moduledir, ZONEFILENAME)
+        with TarFile.open(target, "w:%s" % format) as tf:
+            for entry in os.listdir(zonedir):
+                entrypath = os.path.join(zonedir, entry)
+                tf.add(entrypath, entry)
+    finally:
+        shutil.rmtree(tmpdir)
+
+
+def _run_zic(zonedir, filepaths):
+    """Calls the ``zic`` compiler in a compatible way to get a "fat" binary.
+
+    Recent versions of ``zic`` default to ``-b slim``, while older versions
+    don't even have the ``-b`` option (but default to "fat" binaries). The
+    current version of dateutil does not support Version 2+ TZif files, which
+    causes problems when used in conjunction with "slim" binaries, so this
+    function is used to ensure that we always get a "fat" binary.
+    """
+
+    try:
+        help_text = check_output(["zic", "--help"])
+    except OSError as e:
+        _print_on_nosuchfile(e)
+        raise
+
+    if b"-b " in help_text:
+        bloat_args = ["-b", "fat"]
+    else:
+        bloat_args = []
+
+    check_call(["zic"] + bloat_args + ["-d", zonedir] + filepaths)
+
+
+def _print_on_nosuchfile(e):
+    """Print helpful troubleshooting message
+
+    e is an exception raised by subprocess.check_call()
+
+    """
+    if e.errno == 2:
+        logging.error(
+            "Could not find zic. Perhaps you need to install "
+            "libc-bin or some other package that provides it, "
+            "or it's not in your PATH?")

env-llmeval/lib/python3.10/site-packages/fsspec/__init__.py

@@ -0,0 +1,69 @@
+from importlib.metadata import entry_points
+
+from . import _version, caching
+from .callbacks import Callback
+from .compression import available_compressions
+from .core import get_fs_token_paths, open, open_files, open_local
+from .exceptions import FSTimeoutError
+from .mapping import FSMap, get_mapper
+from .registry import (
+    available_protocols,
+    filesystem,
+    get_filesystem_class,
+    register_implementation,
+    registry,
+)
+from .spec import AbstractFileSystem
+
+__version__ = _version.get_versions()["version"]
+
+__all__ = [
+    "AbstractFileSystem",
+    "FSTimeoutError",
+    "FSMap",
+    "filesystem",
+    "register_implementation",
+    "get_filesystem_class",
+    "get_fs_token_paths",
+    "get_mapper",
+    "open",
+    "open_files",
+    "open_local",
+    "registry",
+    "caching",
+    "Callback",
+    "available_protocols",
+    "available_compressions",
+]
+
+
+def process_entries():
+    if entry_points is not None:
+        try:
+            eps = entry_points()
+        except TypeError:
+            pass  # importlib-metadata < 0.8
+        else:
+            if hasattr(eps, "select"):  # Python 3.10+ / importlib_metadata >= 3.9.0
+                specs = eps.select(group="fsspec.specs")
+            else:
+                specs = eps.get("fsspec.specs", [])
+            registered_names = {}
+            for spec in specs:
+                err_msg = f"Unable to load filesystem from {spec}"
+                name = spec.name
+                if name in registered_names:
+                    continue
+                registered_names[name] = True
+                register_implementation(
+                    name,
+                    spec.value.replace(":", "."),
+                    errtxt=err_msg,
+                    # We take our implementations as the ones to overload with if
+                    # for some reason we encounter some, may be the same, already
+                    # registered
+                    clobber=True,
+                )
+
+
+process_entries()

env-llmeval/lib/python3.10/site-packages/fsspec/_version.py

@@ -0,0 +1,21 @@
+
+# This file was generated by 'versioneer.py' (0.29) from
+# revision-control system data, or from the parent directory name of an
+# unpacked source archive. Distribution tarballs contain a pre-generated copy
+# of this file.
+
+import json
+
+version_json = '''
+{
+ "date": "2024-02-04T20:21:42-0500",
+ "dirty": false,
+ "error": null,
+ "full-revisionid": "5dc364e13b63609717d77b7361e80cfa64e3b8fd",
+ "version": "2024.2.0"
+}
+'''  # END VERSION_JSON
+
+
+def get_versions():
+    return json.loads(version_json)

env-llmeval/lib/python3.10/site-packages/fsspec/archive.py

@@ -0,0 +1,73 @@
+from fsspec import AbstractFileSystem
+from fsspec.utils import tokenize
+
+
+class AbstractArchiveFileSystem(AbstractFileSystem):
+    """
+    A generic superclass for implementing Archive-based filesystems.
+
+    Currently, it is shared amongst
+    :class:`~fsspec.implementations.zip.ZipFileSystem`,
+    :class:`~fsspec.implementations.libarchive.LibArchiveFileSystem` and
+    :class:`~fsspec.implementations.tar.TarFileSystem`.
+    """
+
+    def __str__(self):
+        return f"<Archive-like object {type(self).__name__} at {id(self)}>"
+
+    __repr__ = __str__
+
+    def ukey(self, path):
+        return tokenize(path, self.fo, self.protocol)
+
+    def _all_dirnames(self, paths):
+        """Returns *all* directory names for each path in paths, including intermediate
+        ones.
+
+        Parameters
+        ----------
+        paths: Iterable of path strings
+        """
+        if len(paths) == 0:
+            return set()
+
+        dirnames = {self._parent(path) for path in paths} - {self.root_marker}
+        return dirnames | self._all_dirnames(dirnames)
+
+    def info(self, path, **kwargs):
+        self._get_dirs()
+        path = self._strip_protocol(path)
+        if path in {"", "/"} and self.dir_cache:
+            return {"name": "", "type": "directory", "size": 0}
+        if path in self.dir_cache:
+            return self.dir_cache[path]
+        elif path + "/" in self.dir_cache:
+            return self.dir_cache[path + "/"]
+        else:
+            raise FileNotFoundError(path)
+
+    def ls(self, path, detail=True, **kwargs):
+        self._get_dirs()
+        paths = {}
+        for p, f in self.dir_cache.items():
+            p = p.rstrip("/")
+            if "/" in p:
+                root = p.rsplit("/", 1)[0]
+            else:
+                root = ""
+            if root == path.rstrip("/"):
+                paths[p] = f
+            elif all(
+                (a == b)
+                for a, b in zip(path.split("/"), [""] + p.strip("/").split("/"))
+            ):
+                # root directory entry
+                ppath = p.rstrip("/").split("/", 1)[0]
+                if ppath not in paths:
+                    out = {"name": ppath, "size": 0, "type": "directory"}
+                    paths[ppath] = out
+        if detail:
+            out = sorted(paths.values(), key=lambda _: _["name"])
+            return out
+        else:
+            return sorted(paths)

env-llmeval/lib/python3.10/site-packages/fsspec/caching.py

@@ -0,0 +1,875 @@
+from __future__ import annotations
+
+import collections
+import functools
+import logging
+import math
+import os
+import threading
+import warnings
+from concurrent.futures import Future, ThreadPoolExecutor
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Callable,
+    ClassVar,
+    Generic,
+    NamedTuple,
+    OrderedDict,
+    TypeVar,
+)
+
+if TYPE_CHECKING:
+    import mmap
+
+    from typing_extensions import ParamSpec
+
+    P = ParamSpec("P")
+else:
+    P = TypeVar("P")
+
+T = TypeVar("T")
+
+
+logger = logging.getLogger("fsspec")
+
+Fetcher = Callable[[int, int], bytes]  # Maps (start, end) to bytes
+
+
+class BaseCache:
+    """Pass-though cache: doesn't keep anything, calls every time
+
+    Acts as base class for other cachers
+
+    Parameters
+    ----------
+    blocksize: int
+        How far to read ahead in numbers of bytes
+    fetcher: func
+        Function of the form f(start, end) which gets bytes from remote as
+        specified
+    size: int
+        How big this file is
+    """
+
+    name: ClassVar[str] = "none"
+
+    def __init__(self, blocksize: int, fetcher: Fetcher, size: int) -> None:
+        self.blocksize = blocksize
+        self.fetcher = fetcher
+        self.size = size
+
+    def _fetch(self, start: int | None, stop: int | None) -> bytes:
+        if start is None:
+            start = 0
+        if stop is None:
+            stop = self.size
+        if start >= self.size or start >= stop:
+            return b""
+        return self.fetcher(start, stop)
+
+
+class MMapCache(BaseCache):
+    """memory-mapped sparse file cache
+
+    Opens temporary file, which is filled blocks-wise when data is requested.
+    Ensure there is enough disc space in the temporary location.
+
+    This cache method might only work on posix
+    """
+
+    name = "mmap"
+
+    def __init__(
+        self,
+        blocksize: int,
+        fetcher: Fetcher,
+        size: int,
+        location: str | None = None,
+        blocks: set[int] | None = None,
+    ) -> None:
+        super().__init__(blocksize, fetcher, size)
+        self.blocks = set() if blocks is None else blocks
+        self.location = location
+        self.cache = self._makefile()
+
+    def _makefile(self) -> mmap.mmap | bytearray:
+        import mmap
+        import tempfile
+
+        if self.size == 0:
+            return bytearray()
+
+        # posix version
+        if self.location is None or not os.path.exists(self.location):
+            if self.location is None:
+                fd = tempfile.TemporaryFile()
+                self.blocks = set()
+            else:
+                fd = open(self.location, "wb+")
+            fd.seek(self.size - 1)
+            fd.write(b"1")
+            fd.flush()
+        else:
+            fd = open(self.location, "r+b")
+
+        return mmap.mmap(fd.fileno(), self.size)
+
+    def _fetch(self, start: int | None, end: int | None) -> bytes:
+        logger.debug(f"MMap cache fetching {start}-{end}")
+        if start is None:
+            start = 0
+        if end is None:
+            end = self.size
+        if start >= self.size or start >= end:
+            return b""
+        start_block = start // self.blocksize
+        end_block = end // self.blocksize
+        need = [i for i in range(start_block, end_block + 1) if i not in self.blocks]
+        while need:
+            # TODO: not a for loop so we can consolidate blocks later to
+            # make fewer fetch calls; this could be parallel
+            i = need.pop(0)
+            sstart = i * self.blocksize
+            send = min(sstart + self.blocksize, self.size)
+            logger.debug(f"MMap get block #{i} ({sstart}-{send}")
+            self.cache[sstart:send] = self.fetcher(sstart, send)
+            self.blocks.add(i)
+
+        return self.cache[start:end]
+
+    def __getstate__(self) -> dict[str, Any]:
+        state = self.__dict__.copy()
+        # Remove the unpicklable entries.
+        del state["cache"]
+        return state
+
+    def __setstate__(self, state: dict[str, Any]) -> None:
+        # Restore instance attributes
+        self.__dict__.update(state)
+        self.cache = self._makefile()
+
+
+class ReadAheadCache(BaseCache):
+    """Cache which reads only when we get beyond a block of data
+
+    This is a much simpler version of BytesCache, and does not attempt to
+    fill holes in the cache or keep fragments alive. It is best suited to
+    many small reads in a sequential order (e.g., reading lines from a file).
+    """
+
+    name = "readahead"
+
+    def __init__(self, blocksize: int, fetcher: Fetcher, size: int) -> None:
+        super().__init__(blocksize, fetcher, size)
+        self.cache = b""
+        self.start = 0
+        self.end = 0
+
+    def _fetch(self, start: int | None, end: int | None) -> bytes:
+        if start is None:
+            start = 0
+        if end is None or end > self.size:
+            end = self.size
+        if start >= self.size or start >= end:
+            return b""
+        l = end - start
+        if start >= self.start and end <= self.end:
+            # cache hit
+            return self.cache[start - self.start : end - self.start]
+        elif self.start <= start < self.end:
+            # partial hit
+            part = self.cache[start - self.start :]
+            l -= len(part)
+            start = self.end
+        else:
+            # miss
+            part = b""
+        end = min(self.size, end + self.blocksize)
+        self.cache = self.fetcher(start, end)  # new block replaces old
+        self.start = start
+        self.end = self.start + len(self.cache)
+        return part + self.cache[:l]
+
+
+class FirstChunkCache(BaseCache):
+    """Caches the first block of a file only
+
+    This may be useful for file types where the metadata is stored in the header,
+    but is randomly accessed.
+    """
+
+    name = "first"
+
+    def __init__(self, blocksize: int, fetcher: Fetcher, size: int) -> None:
+        super().__init__(blocksize, fetcher, size)
+        self.cache: bytes | None = None
+
+    def _fetch(self, start: int | None, end: int | None) -> bytes:
+        start = start or 0
+        end = end or self.size
+        if start < self.blocksize:
+            if self.cache is None:
+                if end > self.blocksize:
+                    data = self.fetcher(0, end)
+                    self.cache = data[: self.blocksize]
+                    return data[start:]
+                self.cache = self.fetcher(0, self.blocksize)
+            part = self.cache[start:end]
+            if end > self.blocksize:
+                part += self.fetcher(self.blocksize, end)
+            return part
+        else:
+            return self.fetcher(start, end)
+
+
+class BlockCache(BaseCache):
+    """
+    Cache holding memory as a set of blocks.
+
+    Requests are only ever made ``blocksize`` at a time, and are
+    stored in an LRU cache. The least recently accessed block is
+    discarded when more than ``maxblocks`` are stored.
+
+    Parameters
+    ----------
+    blocksize : int
+        The number of bytes to store in each block.
+        Requests are only ever made for ``blocksize``, so this
+        should balance the overhead of making a request against
+        the granularity of the blocks.
+    fetcher : Callable
+    size : int
+        The total size of the file being cached.
+    maxblocks : int
+        The maximum number of blocks to cache for. The maximum memory
+        use for this cache is then ``blocksize * maxblocks``.
+    """
+
+    name = "blockcache"
+
+    def __init__(
+        self, blocksize: int, fetcher: Fetcher, size: int, maxblocks: int = 32
+    ) -> None:
+        super().__init__(blocksize, fetcher, size)
+        self.nblocks = math.ceil(size / blocksize)
+        self.maxblocks = maxblocks
+        self._fetch_block_cached = functools.lru_cache(maxblocks)(self._fetch_block)
+
+    def __repr__(self) -> str:
+        return (
+            f"<BlockCache blocksize={self.blocksize}, "
+            f"size={self.size}, nblocks={self.nblocks}>"
+        )
+
+    def cache_info(self):
+        """
+        The statistics on the block cache.
+
+        Returns
+        -------
+        NamedTuple
+            Returned directly from the LRU Cache used internally.
+        """
+        return self._fetch_block_cached.cache_info()
+
+    def __getstate__(self) -> dict[str, Any]:
+        state = self.__dict__
+        del state["_fetch_block_cached"]
+        return state
+
+    def __setstate__(self, state: dict[str, Any]) -> None:
+        self.__dict__.update(state)
+        self._fetch_block_cached = functools.lru_cache(state["maxblocks"])(
+            self._fetch_block
+        )
+
+    def _fetch(self, start: int | None, end: int | None) -> bytes:
+        if start is None:
+            start = 0
+        if end is None:
+            end = self.size
+        if start >= self.size or start >= end:
+            return b""
+
+        # byte position -> block numbers
+        start_block_number = start // self.blocksize
+        end_block_number = end // self.blocksize
+
+        # these are cached, so safe to do multiple calls for the same start and end.
+        for block_number in range(start_block_number, end_block_number + 1):
+            self._fetch_block_cached(block_number)
+
+        return self._read_cache(
+            start,
+            end,
+            start_block_number=start_block_number,
+            end_block_number=end_block_number,
+        )
+
+    def _fetch_block(self, block_number: int) -> bytes:
+        """
+        Fetch the block of data for `block_number`.
+        """
+        if block_number > self.nblocks:
+            raise ValueError(
+                f"'block_number={block_number}' is greater than "
+                f"the number of blocks ({self.nblocks})"
+            )
+
+        start = block_number * self.blocksize
+        end = start + self.blocksize
+        logger.info("BlockCache fetching block %d", block_number)
+        block_contents = super()._fetch(start, end)
+        return block_contents
+
+    def _read_cache(
+        self, start: int, end: int, start_block_number: int, end_block_number: int
+    ) -> bytes:
+        """
+        Read from our block cache.
+
+        Parameters
+        ----------
+        start, end : int
+            The start and end byte positions.
+        start_block_number, end_block_number : int
+            The start and end block numbers.
+        """
+        start_pos = start % self.blocksize
+        end_pos = end % self.blocksize
+
+        if start_block_number == end_block_number:
+            block: bytes = self._fetch_block_cached(start_block_number)
+            return block[start_pos:end_pos]
+
+        else:
+            # read from the initial
+            out = []
+            out.append(self._fetch_block_cached(start_block_number)[start_pos:])
+
+            # intermediate blocks
+            # Note: it'd be nice to combine these into one big request. However
+            # that doesn't play nicely with our LRU cache.
+            for block_number in range(start_block_number + 1, end_block_number):
+                out.append(self._fetch_block_cached(block_number))
+
+            # final block
+            out.append(self._fetch_block_cached(end_block_number)[:end_pos])
+
+            return b"".join(out)
+
+
+class BytesCache(BaseCache):
+    """Cache which holds data in a in-memory bytes object
+
+    Implements read-ahead by the block size, for semi-random reads progressing
+    through the file.
+
+    Parameters
+    ----------
+    trim: bool
+        As we read more data, whether to discard the start of the buffer when
+        we are more than a blocksize ahead of it.
+    """
+
+    name: ClassVar[str] = "bytes"
+
+    def __init__(
+        self, blocksize: int, fetcher: Fetcher, size: int, trim: bool = True
+    ) -> None:
+        super().__init__(blocksize, fetcher, size)
+        self.cache = b""
+        self.start: int | None = None
+        self.end: int | None = None
+        self.trim = trim
+
+    def _fetch(self, start: int | None, end: int | None) -> bytes:
+        # TODO: only set start/end after fetch, in case it fails?
+        # is this where retry logic might go?
+        if start is None:
+            start = 0
+        if end is None:
+            end = self.size
+        if start >= self.size or start >= end:
+            return b""
+        if (
+            self.start is not None
+            and start >= self.start
+            and self.end is not None
+            and end < self.end
+        ):
+            # cache hit: we have all the required data
+            offset = start - self.start
+            return self.cache[offset : offset + end - start]
+
+        if self.blocksize:
+            bend = min(self.size, end + self.blocksize)
+        else:
+            bend = end
+
+        if bend == start or start > self.size:
+            return b""
+
+        if (self.start is None or start < self.start) and (
+            self.end is None or end > self.end
+        ):
+            # First read, or extending both before and after
+            self.cache = self.fetcher(start, bend)
+            self.start = start
+        else:
+            assert self.start is not None
+            assert self.end is not None
+
+            if start < self.start:
+                if self.end is None or self.end - end > self.blocksize:
+                    self.cache = self.fetcher(start, bend)
+                    self.start = start
+                else:
+                    new = self.fetcher(start, self.start)
+                    self.start = start
+                    self.cache = new + self.cache
+            elif self.end is not None and bend > self.end:
+                if self.end > self.size:
+                    pass
+                elif end - self.end > self.blocksize:
+                    self.cache = self.fetcher(start, bend)
+                    self.start = start
+                else:
+                    new = self.fetcher(self.end, bend)
+                    self.cache = self.cache + new
+
+        self.end = self.start + len(self.cache)
+        offset = start - self.start
+        out = self.cache[offset : offset + end - start]
+        if self.trim:
+            num = (self.end - self.start) // (self.blocksize + 1)
+            if num > 1:
+                self.start += self.blocksize * num
+                self.cache = self.cache[self.blocksize * num :]
+        return out
+
+    def __len__(self) -> int:
+        return len(self.cache)
+
+
+class AllBytes(BaseCache):
+    """Cache entire contents of the file"""
+
+    name: ClassVar[str] = "all"
+
+    def __init__(
+        self,
+        blocksize: int | None = None,
+        fetcher: Fetcher | None = None,
+        size: int | None = None,
+        data: bytes | None = None,
+    ) -> None:
+        super().__init__(blocksize, fetcher, size)  # type: ignore[arg-type]
+        if data is None:
+            data = self.fetcher(0, self.size)
+        self.data = data
+
+    def _fetch(self, start: int | None, stop: int | None) -> bytes:
+        return self.data[start:stop]
+
+
+class KnownPartsOfAFile(BaseCache):
+    """
+    Cache holding known file parts.
+
+    Parameters
+    ----------
+    blocksize: int
+        How far to read ahead in numbers of bytes
+    fetcher: func
+        Function of the form f(start, end) which gets bytes from remote as
+        specified
+    size: int
+        How big this file is
+    data: dict
+        A dictionary mapping explicit `(start, stop)` file-offset tuples
+        with known bytes.
+    strict: bool, default True
+        Whether to fetch reads that go beyond a known byte-range boundary.
+        If `False`, any read that ends outside a known part will be zero
+        padded. Note that zero padding will not be used for reads that
+        begin outside a known byte-range.
+    """
+
+    name: ClassVar[str] = "parts"
+
+    def __init__(
+        self,
+        blocksize: int,
+        fetcher: Fetcher,
+        size: int,
+        data: dict[tuple[int, int], bytes] = {},
+        strict: bool = True,
+        **_: Any,
+    ):
+        super().__init__(blocksize, fetcher, size)
+        self.strict = strict
+
+        # simple consolidation of contiguous blocks
+        if data:
+            old_offsets = sorted(data.keys())
+            offsets = [old_offsets[0]]
+            blocks = [data.pop(old_offsets[0])]
+            for start, stop in old_offsets[1:]:
+                start0, stop0 = offsets[-1]
+                if start == stop0:
+                    offsets[-1] = (start0, stop)
+                    blocks[-1] += data.pop((start, stop))
+                else:
+                    offsets.append((start, stop))
+                    blocks.append(data.pop((start, stop)))
+
+            self.data = dict(zip(offsets, blocks))
+        else:
+            self.data = data
+
+    def _fetch(self, start: int | None, stop: int | None) -> bytes:
+        if start is None:
+            start = 0
+        if stop is None:
+            stop = self.size
+
+        out = b""
+        for (loc0, loc1), data in self.data.items():
+            # If self.strict=False, use zero-padded data
+            # for reads beyond the end of a "known" buffer
+            if loc0 <= start < loc1:
+                off = start - loc0
+                out = data[off : off + stop - start]
+                if not self.strict or loc0 <= stop <= loc1:
+                    # The request is within a known range, or
+                    # it begins within a known range, and we
+                    # are allowed to pad reads beyond the
+                    # buffer with zero
+                    out += b"\x00" * (stop - start - len(out))
+                    return out
+                else:
+                    # The request ends outside a known range,
+                    # and we are being "strict" about reads
+                    # beyond the buffer
+                    start = loc1
+                    break
+
+        # We only get here if there is a request outside the
+        # known parts of the file. In an ideal world, this
+        # should never happen
+        if self.fetcher is None:
+            # We cannot fetch the data, so raise an error
+            raise ValueError(f"Read is outside the known file parts: {(start, stop)}. ")
+        # We can fetch the data, but should warn the user
+        # that this may be slow
+        warnings.warn(
+            f"Read is outside the known file parts: {(start, stop)}. "
+            f"IO/caching performance may be poor!"
+        )
+        logger.debug(f"KnownPartsOfAFile cache fetching {start}-{stop}")
+        return out + super()._fetch(start, stop)
+
+
+class UpdatableLRU(Generic[P, T]):
+    """
+    Custom implementation of LRU cache that allows updating keys
+
+    Used by BackgroudBlockCache
+    """
+
+    class CacheInfo(NamedTuple):
+        hits: int
+        misses: int
+        maxsize: int
+        currsize: int
+
+    def __init__(self, func: Callable[P, T], max_size: int = 128) -> None:
+        self._cache: OrderedDict[Any, T] = collections.OrderedDict()
+        self._func = func
+        self._max_size = max_size
+        self._hits = 0
+        self._misses = 0
+        self._lock = threading.Lock()
+
+    def __call__(self, *args: P.args, **kwargs: P.kwargs) -> T:
+        if kwargs:
+            raise TypeError(f"Got unexpected keyword argument {kwargs.keys()}")
+        with self._lock:
+            if args in self._cache:
+                self._cache.move_to_end(args)
+                self._hits += 1
+                return self._cache[args]
+
+        result = self._func(*args, **kwargs)
+
+        with self._lock:
+            self._cache[args] = result
+            self._misses += 1
+            if len(self._cache) > self._max_size:
+                self._cache.popitem(last=False)
+
+        return result
+
+    def is_key_cached(self, *args: Any) -> bool:
+        with self._lock:
+            return args in self._cache
+
+    def add_key(self, result: T, *args: Any) -> None:
+        with self._lock:
+            self._cache[args] = result
+            if len(self._cache) > self._max_size:
+                self._cache.popitem(last=False)
+
+    def cache_info(self) -> UpdatableLRU.CacheInfo:
+        with self._lock:
+            return self.CacheInfo(
+                maxsize=self._max_size,
+                currsize=len(self._cache),
+                hits=self._hits,
+                misses=self._misses,
+            )
+
+
+class BackgroundBlockCache(BaseCache):
+    """
+    Cache holding memory as a set of blocks with pre-loading of
+    the next block in the background.
+
+    Requests are only ever made ``blocksize`` at a time, and are
+    stored in an LRU cache. The least recently accessed block is
+    discarded when more than ``maxblocks`` are stored. If the
+    next block is not in cache, it is loaded in a separate thread
+    in non-blocking way.
+
+    Parameters
+    ----------
+    blocksize : int
+        The number of bytes to store in each block.
+        Requests are only ever made for ``blocksize``, so this
+        should balance the overhead of making a request against
+        the granularity of the blocks.
+    fetcher : Callable
+    size : int
+        The total size of the file being cached.
+    maxblocks : int
+        The maximum number of blocks to cache for. The maximum memory
+        use for this cache is then ``blocksize * maxblocks``.
+    """
+
+    name: ClassVar[str] = "background"
+
+    def __init__(
+        self, blocksize: int, fetcher: Fetcher, size: int, maxblocks: int = 32
+    ) -> None:
+        super().__init__(blocksize, fetcher, size)
+        self.nblocks = math.ceil(size / blocksize)
+        self.maxblocks = maxblocks
+        self._fetch_block_cached = UpdatableLRU(self._fetch_block, maxblocks)
+
+        self._thread_executor = ThreadPoolExecutor(max_workers=1)
+        self._fetch_future_block_number: int | None = None
+        self._fetch_future: Future[bytes] | None = None
+        self._fetch_future_lock = threading.Lock()
+
+    def __repr__(self) -> str:
+        return (
+            f"<BackgroundBlockCache blocksize={self.blocksize}, "
+            f"size={self.size}, nblocks={self.nblocks}>"
+        )
+
+    def cache_info(self) -> UpdatableLRU.CacheInfo:
+        """
+        The statistics on the block cache.
+
+        Returns
+        -------
+        NamedTuple
+            Returned directly from the LRU Cache used internally.
+        """
+        return self._fetch_block_cached.cache_info()
+
+    def __getstate__(self) -> dict[str, Any]:
+        state = self.__dict__
+        del state["_fetch_block_cached"]
+        del state["_thread_executor"]
+        del state["_fetch_future_block_number"]
+        del state["_fetch_future"]
+        del state["_fetch_future_lock"]
+        return state
+
+    def __setstate__(self, state) -> None:
+        self.__dict__.update(state)
+        self._fetch_block_cached = UpdatableLRU(self._fetch_block, state["maxblocks"])
+        self._thread_executor = ThreadPoolExecutor(max_workers=1)
+        self._fetch_future_block_number = None
+        self._fetch_future = None
+        self._fetch_future_lock = threading.Lock()
+
+    def _fetch(self, start: int | None, end: int | None) -> bytes:
+        if start is None:
+            start = 0
+        if end is None:
+            end = self.size
+        if start >= self.size or start >= end:
+            return b""
+
+        # byte position -> block numbers
+        start_block_number = start // self.blocksize
+        end_block_number = end // self.blocksize
+
+        fetch_future_block_number = None
+        fetch_future = None
+        with self._fetch_future_lock:
+            # Background thread is running. Check we we can or must join it.
+            if self._fetch_future is not None:
+                assert self._fetch_future_block_number is not None
+                if self._fetch_future.done():
+                    logger.info("BlockCache joined background fetch without waiting.")
+                    self._fetch_block_cached.add_key(
+                        self._fetch_future.result(), self._fetch_future_block_number
+                    )
+                    # Cleanup the fetch variables. Done with fetching the block.
+                    self._fetch_future_block_number = None
+                    self._fetch_future = None
+                else:
+                    # Must join if we need the block for the current fetch
+                    must_join = bool(
+                        start_block_number
+                        <= self._fetch_future_block_number
+                        <= end_block_number
+                    )
+                    if must_join:
+                        # Copy to the local variables to release lock
+                        # before waiting for result
+                        fetch_future_block_number = self._fetch_future_block_number
+                        fetch_future = self._fetch_future
+
+                        # Cleanup the fetch variables. Have a local copy.
+                        self._fetch_future_block_number = None
+                        self._fetch_future = None
+
+        # Need to wait for the future for the current read
+        if fetch_future is not None:
+            logger.info("BlockCache waiting for background fetch.")
+            # Wait until result and put it in cache
+            self._fetch_block_cached.add_key(
+                fetch_future.result(), fetch_future_block_number
+            )
+
+        # these are cached, so safe to do multiple calls for the same start and end.
+        for block_number in range(start_block_number, end_block_number + 1):
+            self._fetch_block_cached(block_number)
+
+        # fetch next block in the background if nothing is running in the background,
+        # the block is within file and it is not already cached
+        end_block_plus_1 = end_block_number + 1
+        with self._fetch_future_lock:
+            if (
+                self._fetch_future is None
+                and end_block_plus_1 <= self.nblocks
+                and not self._fetch_block_cached.is_key_cached(end_block_plus_1)
+            ):
+                self._fetch_future_block_number = end_block_plus_1
+                self._fetch_future = self._thread_executor.submit(
+                    self._fetch_block, end_block_plus_1, "async"
+                )
+
+        return self._read_cache(
+            start,
+            end,
+            start_block_number=start_block_number,
+            end_block_number=end_block_number,
+        )
+
+    def _fetch_block(self, block_number: int, log_info: str = "sync") -> bytes:
+        """
+        Fetch the block of data for `block_number`.
+        """
+        if block_number > self.nblocks:
+            raise ValueError(
+                f"'block_number={block_number}' is greater than "
+                f"the number of blocks ({self.nblocks})"
+            )
+
+        start = block_number * self.blocksize
+        end = start + self.blocksize
+        logger.info("BlockCache fetching block (%s) %d", log_info, block_number)
+        block_contents = super()._fetch(start, end)
+        return block_contents
+
+    def _read_cache(
+        self, start: int, end: int, start_block_number: int, end_block_number: int
+    ) -> bytes:
+        """
+        Read from our block cache.
+
+        Parameters
+        ----------
+        start, end : int
+            The start and end byte positions.
+        start_block_number, end_block_number : int
+            The start and end block numbers.
+        """
+        start_pos = start % self.blocksize
+        end_pos = end % self.blocksize
+
+        if start_block_number == end_block_number:
+            block = self._fetch_block_cached(start_block_number)
+            return block[start_pos:end_pos]
+
+        else:
+            # read from the initial
+            out = []
+            out.append(self._fetch_block_cached(start_block_number)[start_pos:])
+
+            # intermediate blocks
+            # Note: it'd be nice to combine these into one big request. However
+            # that doesn't play nicely with our LRU cache.
+            for block_number in range(start_block_number + 1, end_block_number):
+                out.append(self._fetch_block_cached(block_number))
+
+            # final block
+            out.append(self._fetch_block_cached(end_block_number)[:end_pos])
+
+            return b"".join(out)
+
+
+caches: dict[str | None, type[BaseCache]] = {
+    # one custom case
+    None: BaseCache,
+}
+
+
+def register_cache(cls: type[BaseCache], clobber: bool = False) -> None:
+    """'Register' cache implementation.
+
+    Parameters
+    ----------
+    clobber: bool, optional
+        If set to True (default is False) - allow to overwrite existing
+        entry.
+
+    Raises
+    ------
+    ValueError
+    """
+    name = cls.name
+    if not clobber and name in caches:
+        raise ValueError(f"Cache with name {name!r} is already known: {caches[name]}")
+    caches[name] = cls
+
+
+for c in (
+    BaseCache,
+    MMapCache,
+    BytesCache,
+    ReadAheadCache,
+    BlockCache,
+    FirstChunkCache,
+    AllBytes,
+    KnownPartsOfAFile,
+    BackgroundBlockCache,
+):
+    register_cache(c)

env-llmeval/lib/python3.10/site-packages/fsspec/compression.py

@@ -0,0 +1,174 @@
+"""Helper functions for a standard streaming compression API"""
+from zipfile import ZipFile
+
+import fsspec.utils
+from fsspec.spec import AbstractBufferedFile
+
+
+def noop_file(file, mode, **kwargs):
+    return file
+
+
+# TODO: files should also be available as contexts
+# should be functions of the form func(infile, mode=, **kwargs) -> file-like
+compr = {None: noop_file}
+
+
+def register_compression(name, callback, extensions, force=False):
+    """Register an "inferable" file compression type.
+
+    Registers transparent file compression type for use with fsspec.open.
+    Compression can be specified by name in open, or "infer"-ed for any files
+    ending with the given extensions.
+
+    Args:
+        name: (str) The compression type name. Eg. "gzip".
+        callback: A callable of form (infile, mode, **kwargs) -> file-like.
+            Accepts an input file-like object, the target mode and kwargs.
+            Returns a wrapped file-like object.
+        extensions: (str, Iterable[str]) A file extension, or list of file
+            extensions for which to infer this compression scheme. Eg. "gz".
+        force: (bool) Force re-registration of compression type or extensions.
+
+    Raises:
+        ValueError: If name or extensions already registered, and not force.
+
+    """
+    if isinstance(extensions, str):
+        extensions = [extensions]
+
+    # Validate registration
+    if name in compr and not force:
+        raise ValueError(f"Duplicate compression registration: {name}")
+
+    for ext in extensions:
+        if ext in fsspec.utils.compressions and not force:
+            raise ValueError(f"Duplicate compression file extension: {ext} ({name})")
+
+    compr[name] = callback
+
+    for ext in extensions:
+        fsspec.utils.compressions[ext] = name
+
+
+def unzip(infile, mode="rb", filename=None, **kwargs):
+    if "r" not in mode:
+        filename = filename or "file"
+        z = ZipFile(infile, mode="w", **kwargs)
+        fo = z.open(filename, mode="w")
+        fo.close = lambda closer=fo.close: closer() or z.close()
+        return fo
+    z = ZipFile(infile)
+    if filename is None:
+        filename = z.namelist()[0]
+    return z.open(filename, mode="r", **kwargs)
+
+
+register_compression("zip", unzip, "zip")
+
+try:
+    from bz2 import BZ2File
+except ImportError:
+    pass
+else:
+    register_compression("bz2", BZ2File, "bz2")
+
+try:  # pragma: no cover
+    from isal import igzip
+
+    def isal(infile, mode="rb", **kwargs):
+        return igzip.IGzipFile(fileobj=infile, mode=mode, **kwargs)
+
+    register_compression("gzip", isal, "gz")
+except ImportError:
+    from gzip import GzipFile
+
+    register_compression(
+        "gzip", lambda f, **kwargs: GzipFile(fileobj=f, **kwargs), "gz"
+    )
+
+try:
+    from lzma import LZMAFile
+
+    register_compression("lzma", LZMAFile, "lzma")
+    register_compression("xz", LZMAFile, "xz")
+except ImportError:
+    pass
+
+try:
+    import lzmaffi
+
+    register_compression("lzma", lzmaffi.LZMAFile, "lzma", force=True)
+    register_compression("xz", lzmaffi.LZMAFile, "xz", force=True)
+except ImportError:
+    pass
+
+
+class SnappyFile(AbstractBufferedFile):
+    def __init__(self, infile, mode, **kwargs):
+        import snappy
+
+        super().__init__(
+            fs=None, path="snappy", mode=mode.strip("b") + "b", size=999999999, **kwargs
+        )
+        self.infile = infile
+        if "r" in mode:
+            self.codec = snappy.StreamDecompressor()
+        else:
+            self.codec = snappy.StreamCompressor()
+
+    def _upload_chunk(self, final=False):
+        self.buffer.seek(0)
+        out = self.codec.add_chunk(self.buffer.read())
+        self.infile.write(out)
+        return True
+
+    def seek(self, loc, whence=0):
+        raise NotImplementedError("SnappyFile is not seekable")
+
+    def seekable(self):
+        return False
+
+    def _fetch_range(self, start, end):
+        """Get the specified set of bytes from remote"""
+        data = self.infile.read(end - start)
+        return self.codec.decompress(data)
+
+
+try:
+    import snappy
+
+    snappy.compress
+    # Snappy may use the .sz file extension, but this is not part of the
+    # standard implementation.
+    register_compression("snappy", SnappyFile, [])
+
+except (ImportError, NameError, AttributeError):
+    pass
+
+try:
+    import lz4.frame
+
+    register_compression("lz4", lz4.frame.open, "lz4")
+except ImportError:
+    pass
+
+try:
+    import zstandard as zstd
+
+    def zstandard_file(infile, mode="rb"):
+        if "r" in mode:
+            cctx = zstd.ZstdDecompressor()
+            return cctx.stream_reader(infile)
+        else:
+            cctx = zstd.ZstdCompressor(level=10)
+            return cctx.stream_writer(infile)
+
+    register_compression("zstd", zstandard_file, "zst")
+except ImportError:
+    pass
+
+
+def available_compressions():
+    """Return a list of the implemented compressions."""
+    return list(compr)

env-llmeval/lib/python3.10/site-packages/fsspec/config.py

@@ -0,0 +1,131 @@
+from __future__ import annotations
+
+import configparser
+import json
+import os
+import warnings
+from typing import Any
+
+conf: dict[str, dict[str, Any]] = {}
+default_conf_dir = os.path.join(os.path.expanduser("~"), ".config/fsspec")
+conf_dir = os.environ.get("FSSPEC_CONFIG_DIR", default_conf_dir)
+
+
+def set_conf_env(conf_dict, envdict=os.environ):
+    """Set config values from environment variables
+
+    Looks for variables of the form ``FSSPEC_<protocol>`` and
+    ``FSSPEC_<protocol>_<kwarg>``. For ``FSSPEC_<protocol>`` the value is parsed
+    as a json dictionary and used to ``update`` the config of the
+    corresponding protocol. For ``FSSPEC_<protocol>_<kwarg>`` there is no
+    attempt to convert the string value, but the kwarg keys will be lower-cased.
+
+    The ``FSSPEC_<protocol>_<kwarg>`` variables are applied after the
+    ``FSSPEC_<protocol>`` ones.
+
+    Parameters
+    ----------
+    conf_dict : dict(str, dict)
+        This dict will be mutated
+    envdict : dict-like(str, str)
+        Source for the values - usually the real environment
+    """
+    kwarg_keys = []
+    for key in envdict:
+        if key.startswith("FSSPEC_") and len(key) > 7 and key[7] != "_":
+            if key.count("_") > 1:
+                kwarg_keys.append(key)
+                continue
+            try:
+                value = json.loads(envdict[key])
+            except json.decoder.JSONDecodeError as ex:
+                warnings.warn(
+                    f"Ignoring environment variable {key} due to a parse failure: {ex}"
+                )
+            else:
+                if isinstance(value, dict):
+                    _, proto = key.split("_", 1)
+                    conf_dict.setdefault(proto.lower(), {}).update(value)
+                else:
+                    warnings.warn(
+                        f"Ignoring environment variable {key} due to not being a dict:"
+                        f" {type(value)}"
+                    )
+        elif key.startswith("FSSPEC"):
+            warnings.warn(
+                f"Ignoring environment variable {key} due to having an unexpected name"
+            )
+
+    for key in kwarg_keys:
+        _, proto, kwarg = key.split("_", 2)
+        conf_dict.setdefault(proto.lower(), {})[kwarg.lower()] = envdict[key]
+
+
+def set_conf_files(cdir, conf_dict):
+    """Set config values from files
+
+    Scans for INI and JSON files in the given dictionary, and uses their
+    contents to set the config. In case of repeated values, later values
+    win.
+
+    In the case of INI files, all values are strings, and these will not
+    be converted.
+
+    Parameters
+    ----------
+    cdir : str
+        Directory to search
+    conf_dict : dict(str, dict)
+        This dict will be mutated
+    """
+    if not os.path.isdir(cdir):
+        return
+    allfiles = sorted(os.listdir(cdir))
+    for fn in allfiles:
+        if fn.endswith(".ini"):
+            ini = configparser.ConfigParser()
+            ini.read(os.path.join(cdir, fn))
+            for key in ini:
+                if key == "DEFAULT":
+                    continue
+                conf_dict.setdefault(key, {}).update(dict(ini[key]))
+        if fn.endswith(".json"):
+            with open(os.path.join(cdir, fn)) as f:
+                js = json.load(f)
+            for key in js:
+                conf_dict.setdefault(key, {}).update(dict(js[key]))
+
+
+def apply_config(cls, kwargs, conf_dict=None):
+    """Supply default values for kwargs when instantiating class
+
+    Augments the passed kwargs, by finding entries in the config dict
+    which match the classes ``.protocol`` attribute (one or more str)
+
+    Parameters
+    ----------
+    cls : file system implementation
+    kwargs : dict
+    conf_dict : dict of dict
+        Typically this is the global configuration
+
+    Returns
+    -------
+    dict : the modified set of kwargs
+    """
+    if conf_dict is None:
+        conf_dict = conf
+    protos = cls.protocol if isinstance(cls.protocol, (tuple, list)) else [cls.protocol]
+    kw = {}
+    for proto in protos:
+        # default kwargs from the current state of the config
+        if proto in conf_dict:
+            kw.update(conf_dict[proto])
+    # explicit kwargs always win
+    kw.update(**kwargs)
+    kwargs = kw
+    return kwargs
+
+
+set_conf_files(conf_dir, conf)
+set_conf_env(conf)

env-llmeval/lib/python3.10/site-packages/fsspec/conftest.py

@@ -0,0 +1,55 @@
+import os
+import shutil
+import subprocess
+import sys
+import time
+
+import pytest
+
+import fsspec
+from fsspec.implementations.cached import CachingFileSystem
+
+
+@pytest.fixture()
+def m():
+    """
+    Fixture providing a memory filesystem.
+    """
+    m = fsspec.filesystem("memory")
+    m.store.clear()
+    m.pseudo_dirs.clear()
+    m.pseudo_dirs.append("")
+    try:
+        yield m
+    finally:
+        m.store.clear()
+        m.pseudo_dirs.clear()
+        m.pseudo_dirs.append("")
+
+
+@pytest.fixture
+def ftp_writable(tmpdir):
+    """
+    Fixture providing a writable FTP filesystem.
+    """
+    pytest.importorskip("pyftpdlib")
+    from fsspec.implementations.ftp import FTPFileSystem
+
+    FTPFileSystem.clear_instance_cache()  # remove lingering connections
+    CachingFileSystem.clear_instance_cache()
+    d = str(tmpdir)
+    with open(os.path.join(d, "out"), "wb") as f:
+        f.write(b"hello" * 10000)
+    P = subprocess.Popen(
+        [sys.executable, "-m", "pyftpdlib", "-d", d, "-u", "user", "-P", "pass", "-w"]
+    )
+    try:
+        time.sleep(1)
+        yield "localhost", 2121, "user", "pass"
+    finally:
+        P.terminate()
+        P.wait()
+        try:
+            shutil.rmtree(tmpdir)
+        except Exception:
+            pass

env-llmeval/lib/python3.10/site-packages/fsspec/core.py

@@ -0,0 +1,710 @@
+from __future__ import annotations
+
+import io
+import logging
+import os
+import re
+from glob import has_magic
+from pathlib import Path
+
+# for backwards compat, we export cache things from here too
+from .caching import (  # noqa: F401
+    BaseCache,
+    BlockCache,
+    BytesCache,
+    MMapCache,
+    ReadAheadCache,
+    caches,
+)
+from .compression import compr
+from .registry import filesystem, get_filesystem_class
+from .utils import (
+    _unstrip_protocol,
+    build_name_function,
+    infer_compression,
+    stringify_path,
+)
+
+logger = logging.getLogger("fsspec")
+
+
+class OpenFile:
+    """
+    File-like object to be used in a context
+
+    Can layer (buffered) text-mode and compression over any file-system, which
+    are typically binary-only.
+
+    These instances are safe to serialize, as the low-level file object
+    is not created until invoked using ``with``.
+
+    Parameters
+    ----------
+    fs: FileSystem
+        The file system to use for opening the file. Should be a subclass or duck-type
+        with ``fsspec.spec.AbstractFileSystem``
+    path: str
+        Location to open
+    mode: str like 'rb', optional
+        Mode of the opened file
+    compression: str or None, optional
+        Compression to apply
+    encoding: str or None, optional
+        The encoding to use if opened in text mode.
+    errors: str or None, optional
+        How to handle encoding errors if opened in text mode.
+    newline: None or str
+        Passed to TextIOWrapper in text mode, how to handle line endings.
+    autoopen: bool
+        If True, calls open() immediately. Mostly used by pickle
+    pos: int
+        If given and autoopen is True, seek to this location immediately
+    """
+
+    def __init__(
+        self,
+        fs,
+        path,
+        mode="rb",
+        compression=None,
+        encoding=None,
+        errors=None,
+        newline=None,
+    ):
+        self.fs = fs
+        self.path = path
+        self.mode = mode
+        self.compression = get_compression(path, compression)
+        self.encoding = encoding
+        self.errors = errors
+        self.newline = newline
+        self.fobjects = []
+
+    def __reduce__(self):
+        return (
+            OpenFile,
+            (
+                self.fs,
+                self.path,
+                self.mode,
+                self.compression,
+                self.encoding,
+                self.errors,
+                self.newline,
+            ),
+        )
+
+    def __repr__(self):
+        return f"<OpenFile '{self.path}'>"
+
+    def __enter__(self):
+        mode = self.mode.replace("t", "").replace("b", "") + "b"
+
+        f = self.fs.open(self.path, mode=mode)
+
+        self.fobjects = [f]
+
+        if self.compression is not None:
+            compress = compr[self.compression]
+            f = compress(f, mode=mode[0])
+            self.fobjects.append(f)
+
+        if "b" not in self.mode:
+            # assume, for example, that 'r' is equivalent to 'rt' as in builtin
+            f = PickleableTextIOWrapper(
+                f, encoding=self.encoding, errors=self.errors, newline=self.newline
+            )
+            self.fobjects.append(f)
+
+        return self.fobjects[-1]
+
+    def __exit__(self, *args):
+        self.close()
+
+    @property
+    def full_name(self):
+        return _unstrip_protocol(self.path, self.fs)
+
+    def open(self):
+        """Materialise this as a real open file without context
+
+        The OpenFile object should be explicitly closed to avoid enclosed file
+        instances persisting. You must, therefore, keep a reference to the OpenFile
+        during the life of the file-like it generates.
+        """
+        return self.__enter__()
+
+    def close(self):
+        """Close all encapsulated file objects"""
+        for f in reversed(self.fobjects):
+            if "r" not in self.mode and not f.closed:
+                f.flush()
+            f.close()
+        self.fobjects.clear()
+
+
+class OpenFiles(list):
+    """List of OpenFile instances
+
+    Can be used in a single context, which opens and closes all of the
+    contained files. Normal list access to get the elements works as
+    normal.
+
+    A special case is made for caching filesystems - the files will
+    be down/uploaded together at the start or end of the context, and
+    this may happen concurrently, if the target filesystem supports it.
+    """
+
+    def __init__(self, *args, mode="rb", fs=None):
+        self.mode = mode
+        self.fs = fs
+        self.files = []
+        super().__init__(*args)
+
+    def __enter__(self):
+        if self.fs is None:
+            raise ValueError("Context has already been used")
+
+        fs = self.fs
+        while True:
+            if hasattr(fs, "open_many"):
+                # check for concurrent cache download; or set up for upload
+                self.files = fs.open_many(self)
+                return self.files
+            if hasattr(fs, "fs") and fs.fs is not None:
+                fs = fs.fs
+            else:
+                break
+        return [s.__enter__() for s in self]
+
+    def __exit__(self, *args):
+        fs = self.fs
+        [s.__exit__(*args) for s in self]
+        if "r" not in self.mode:
+            while True:
+                if hasattr(fs, "open_many"):
+                    # check for concurrent cache upload
+                    fs.commit_many(self.files)
+                    return
+                if hasattr(fs, "fs") and fs.fs is not None:
+                    fs = fs.fs
+                else:
+                    break
+
+    def __getitem__(self, item):
+        out = super().__getitem__(item)
+        if isinstance(item, slice):
+            return OpenFiles(out, mode=self.mode, fs=self.fs)
+        return out
+
+    def __repr__(self):
+        return f"<List of {len(self)} OpenFile instances>"
+
+
+def open_files(
+    urlpath,
+    mode="rb",
+    compression=None,
+    encoding="utf8",
+    errors=None,
+    name_function=None,
+    num=1,
+    protocol=None,
+    newline=None,
+    auto_mkdir=True,
+    expand=True,
+    **kwargs,
+):
+    """Given a path or paths, return a list of ``OpenFile`` objects.
+
+    For writing, a str path must contain the "*" character, which will be filled
+    in by increasing numbers, e.g., "part*" ->  "part1", "part2" if num=2.
+
+    For either reading or writing, can instead provide explicit list of paths.
+
+    Parameters
+    ----------
+    urlpath: string or list
+        Absolute or relative filepath(s). Prefix with a protocol like ``s3://``
+        to read from alternative filesystems. To read from multiple files you
+        can pass a globstring or a list of paths, with the caveat that they
+        must all have the same protocol.
+    mode: 'rb', 'wt', etc.
+    compression: string or None
+        If given, open file using compression codec. Can either be a compression
+        name (a key in ``fsspec.compression.compr``) or "infer" to guess the
+        compression from the filename suffix.
+    encoding: str
+        For text mode only
+    errors: None or str
+        Passed to TextIOWrapper in text mode
+    name_function: function or None
+        if opening a set of files for writing, those files do not yet exist,
+        so we need to generate their names by formatting the urlpath for
+        each sequence number
+    num: int [1]
+        if writing mode, number of files we expect to create (passed to
+        name+function)
+    protocol: str or None
+        If given, overrides the protocol found in the URL.
+    newline: bytes or None
+        Used for line terminator in text mode. If None, uses system default;
+        if blank, uses no translation.
+    auto_mkdir: bool (True)
+        If in write mode, this will ensure the target directory exists before
+        writing, by calling ``fs.mkdirs(exist_ok=True)``.
+    expand: bool
+    **kwargs: dict
+        Extra options that make sense to a particular storage connection, e.g.
+        host, port, username, password, etc.
+
+    Examples
+    --------
+    >>> files = open_files('2015-*-*.csv')  # doctest: +SKIP
+    >>> files = open_files(
+    ...     's3://bucket/2015-*-*.csv.gz', compression='gzip'
+    ... )  # doctest: +SKIP
+
+    Returns
+    -------
+    An ``OpenFiles`` instance, which is a list of ``OpenFile`` objects that can
+    be used as a single context
+
+    Notes
+    -----
+    For a full list of the available protocols and the implementations that
+    they map across to see the latest online documentation:
+
+    - For implementations built into ``fsspec`` see
+      https://filesystem-spec.readthedocs.io/en/latest/api.html#built-in-implementations
+    - For implementations in separate packages see
+      https://filesystem-spec.readthedocs.io/en/latest/api.html#other-known-implementations
+    """
+    fs, fs_token, paths = get_fs_token_paths(
+        urlpath,
+        mode,
+        num=num,
+        name_function=name_function,
+        storage_options=kwargs,
+        protocol=protocol,
+        expand=expand,
+    )
+    if fs.protocol == "file":
+        fs.auto_mkdir = auto_mkdir
+    elif "r" not in mode and auto_mkdir:
+        parents = {fs._parent(path) for path in paths}
+        for parent in parents:
+            try:
+                fs.makedirs(parent, exist_ok=True)
+            except PermissionError:
+                pass
+    return OpenFiles(
+        [
+            OpenFile(
+                fs,
+                path,
+                mode=mode,
+                compression=compression,
+                encoding=encoding,
+                errors=errors,
+                newline=newline,
+            )
+            for path in paths
+        ],
+        mode=mode,
+        fs=fs,
+    )
+
+
+def _un_chain(path, kwargs):
+    x = re.compile(".*[^a-z]+.*")  # test for non protocol-like single word
+    bits = (
+        [p if "://" in p or x.match(p) else p + "://" for p in path.split("::")]
+        if "::" in path
+        else [path]
+    )
+    # [[url, protocol, kwargs], ...]
+    out = []
+    previous_bit = None
+    kwargs = kwargs.copy()
+    for bit in reversed(bits):
+        protocol = kwargs.pop("protocol", None) or split_protocol(bit)[0] or "file"
+        cls = get_filesystem_class(protocol)
+        extra_kwargs = cls._get_kwargs_from_urls(bit)
+        kws = kwargs.pop(protocol, {})
+        if bit is bits[0]:
+            kws.update(kwargs)
+        kw = dict(**extra_kwargs, **kws)
+        bit = cls._strip_protocol(bit)
+        if (
+            protocol in {"blockcache", "filecache", "simplecache"}
+            and "target_protocol" not in kw
+        ):
+            bit = previous_bit
+        out.append((bit, protocol, kw))
+        previous_bit = bit
+    out = list(reversed(out))
+    return out
+
+
+def url_to_fs(url, **kwargs):
+    """
+    Turn fully-qualified and potentially chained URL into filesystem instance
+
+    Parameters
+    ----------
+    url : str
+        The fsspec-compatible URL
+    **kwargs: dict
+        Extra options that make sense to a particular storage connection, e.g.
+        host, port, username, password, etc.
+
+    Returns
+    -------
+    filesystem : FileSystem
+        The new filesystem discovered from ``url`` and created with
+        ``**kwargs``.
+    urlpath : str
+        The file-systems-specific URL for ``url``.
+    """
+    # non-FS arguments that appear in fsspec.open()
+    # inspect could keep this in sync with open()'s signature
+    known_kwargs = {
+        "compression",
+        "encoding",
+        "errors",
+        "expand",
+        "mode",
+        "name_function",
+        "newline",
+        "num",
+    }
+    kwargs = {k: v for k, v in kwargs.items() if k not in known_kwargs}
+    chain = _un_chain(url, kwargs)
+    inkwargs = {}
+    # Reverse iterate the chain, creating a nested target_* structure
+    for i, ch in enumerate(reversed(chain)):
+        urls, protocol, kw = ch
+        if i == len(chain) - 1:
+            inkwargs = dict(**kw, **inkwargs)
+            continue
+        inkwargs["target_options"] = dict(**kw, **inkwargs)
+        inkwargs["target_protocol"] = protocol
+        inkwargs["fo"] = urls
+    urlpath, protocol, _ = chain[0]
+    fs = filesystem(protocol, **inkwargs)
+    return fs, urlpath
+
+
+def open(
+    urlpath,
+    mode="rb",
+    compression=None,
+    encoding="utf8",
+    errors=None,
+    protocol=None,
+    newline=None,
+    **kwargs,
+):
+    """Given a path or paths, return one ``OpenFile`` object.
+
+    Parameters
+    ----------
+    urlpath: string or list
+        Absolute or relative filepath. Prefix with a protocol like ``s3://``
+        to read from alternative filesystems. Should not include glob
+        character(s).
+    mode: 'rb', 'wt', etc.
+    compression: string or None
+        If given, open file using compression codec. Can either be a compression
+        name (a key in ``fsspec.compression.compr``) or "infer" to guess the
+        compression from the filename suffix.
+    encoding: str
+        For text mode only
+    errors: None or str
+        Passed to TextIOWrapper in text mode
+    protocol: str or None
+        If given, overrides the protocol found in the URL.
+    newline: bytes or None
+        Used for line terminator in text mode. If None, uses system default;
+        if blank, uses no translation.
+    **kwargs: dict
+        Extra options that make sense to a particular storage connection, e.g.
+        host, port, username, password, etc.
+
+    Examples
+    --------
+    >>> openfile = open('2015-01-01.csv')  # doctest: +SKIP
+    >>> openfile = open(
+    ...     's3://bucket/2015-01-01.csv.gz', compression='gzip'
+    ... )  # doctest: +SKIP
+    >>> with openfile as f:
+    ...     df = pd.read_csv(f)  # doctest: +SKIP
+    ...
+
+    Returns
+    -------
+    ``OpenFile`` object.
+
+    Notes
+    -----
+    For a full list of the available protocols and the implementations that
+    they map across to see the latest online documentation:
+
+    - For implementations built into ``fsspec`` see
+      https://filesystem-spec.readthedocs.io/en/latest/api.html#built-in-implementations
+    - For implementations in separate packages see
+      https://filesystem-spec.readthedocs.io/en/latest/api.html#other-known-implementations
+    """
+    out = open_files(
+        urlpath=[urlpath],
+        mode=mode,
+        compression=compression,
+        encoding=encoding,
+        errors=errors,
+        protocol=protocol,
+        newline=newline,
+        expand=False,
+        **kwargs,
+    )
+    if not out:
+        raise FileNotFoundError(urlpath)
+    return out[0]
+
+
+def open_local(
+    url: str | list[str] | Path | list[Path],
+    mode: str = "rb",
+    **storage_options: dict,
+) -> str | list[str]:
+    """Open file(s) which can be resolved to local
+
+    For files which either are local, or get downloaded upon open
+    (e.g., by file caching)
+
+    Parameters
+    ----------
+    url: str or list(str)
+    mode: str
+        Must be read mode
+    storage_options:
+        passed on to FS for or used by open_files (e.g., compression)
+    """
+    if "r" not in mode:
+        raise ValueError("Can only ensure local files when reading")
+    of = open_files(url, mode=mode, **storage_options)
+    if not getattr(of[0].fs, "local_file", False):
+        raise ValueError(
+            "open_local can only be used on a filesystem which"
+            " has attribute local_file=True"
+        )
+    with of as files:
+        paths = [f.name for f in files]
+    if (isinstance(url, str) and not has_magic(url)) or isinstance(url, Path):
+        return paths[0]
+    return paths
+
+
+def get_compression(urlpath, compression):
+    if compression == "infer":
+        compression = infer_compression(urlpath)
+    if compression is not None and compression not in compr:
+        raise ValueError(f"Compression type {compression} not supported")
+    return compression
+
+
+def split_protocol(urlpath):
+    """Return protocol, path pair"""
+    urlpath = stringify_path(urlpath)
+    if "://" in urlpath:
+        protocol, path = urlpath.split("://", 1)
+        if len(protocol) > 1:
+            # excludes Windows paths
+            return protocol, path
+    if urlpath.startswith("data:"):
+        return urlpath.split(":", 1)
+    return None, urlpath
+
+
+def strip_protocol(urlpath):
+    """Return only path part of full URL, according to appropriate backend"""
+    protocol, _ = split_protocol(urlpath)
+    cls = get_filesystem_class(protocol)
+    return cls._strip_protocol(urlpath)
+
+
+def expand_paths_if_needed(paths, mode, num, fs, name_function):
+    """Expand paths if they have a ``*`` in them (write mode) or any of ``*?[]``
+    in them (read mode).
+
+    :param paths: list of paths
+    mode: str
+        Mode in which to open files.
+    num: int
+        If opening in writing mode, number of files we expect to create.
+    fs: filesystem object
+    name_function: callable
+        If opening in writing mode, this callable is used to generate path
+        names. Names are generated for each partition by
+        ``urlpath.replace('*', name_function(partition_index))``.
+    :return: list of paths
+    """
+    expanded_paths = []
+    paths = list(paths)
+
+    if "w" in mode:  # read mode
+        if sum([1 for p in paths if "*" in p]) > 1:
+            raise ValueError(
+                "When writing data, only one filename mask can be specified."
+            )
+        num = max(num, len(paths))
+
+        for curr_path in paths:
+            if "*" in curr_path:
+                # expand using name_function
+                expanded_paths.extend(_expand_paths(curr_path, name_function, num))
+            else:
+                expanded_paths.append(curr_path)
+        # if we generated more paths that asked for, trim the list
+        if len(expanded_paths) > num:
+            expanded_paths = expanded_paths[:num]
+
+    else:  # read mode
+        for curr_path in paths:
+            if has_magic(curr_path):
+                # expand using glob
+                expanded_paths.extend(fs.glob(curr_path))
+            else:
+                expanded_paths.append(curr_path)
+
+    return expanded_paths
+
+
+def get_fs_token_paths(
+    urlpath,
+    mode="rb",
+    num=1,
+    name_function=None,
+    storage_options=None,
+    protocol=None,
+    expand=True,
+):
+    """Filesystem, deterministic token, and paths from a urlpath and options.
+
+    Parameters
+    ----------
+    urlpath: string or iterable
+        Absolute or relative filepath, URL (may include protocols like
+        ``s3://``), or globstring pointing to data.
+    mode: str, optional
+        Mode in which to open files.
+    num: int, optional
+        If opening in writing mode, number of files we expect to create.
+    name_function: callable, optional
+        If opening in writing mode, this callable is used to generate path
+        names. Names are generated for each partition by
+        ``urlpath.replace('*', name_function(partition_index))``.
+    storage_options: dict, optional
+        Additional keywords to pass to the filesystem class.
+    protocol: str or None
+        To override the protocol specifier in the URL
+    expand: bool
+        Expand string paths for writing, assuming the path is a directory
+    """
+    if isinstance(urlpath, (list, tuple, set)):
+        if not urlpath:
+            raise ValueError("empty urlpath sequence")
+        urlpath0 = stringify_path(list(urlpath)[0])
+    else:
+        urlpath0 = stringify_path(urlpath)
+    storage_options = storage_options or {}
+    if protocol:
+        storage_options["protocol"] = protocol
+    chain = _un_chain(urlpath0, storage_options or {})
+    inkwargs = {}
+    # Reverse iterate the chain, creating a nested target_* structure
+    for i, ch in enumerate(reversed(chain)):
+        urls, nested_protocol, kw = ch
+        if i == len(chain) - 1:
+            inkwargs = dict(**kw, **inkwargs)
+            continue
+        inkwargs["target_options"] = dict(**kw, **inkwargs)
+        inkwargs["target_protocol"] = nested_protocol
+        inkwargs["fo"] = urls
+    paths, protocol, _ = chain[0]
+    fs = filesystem(protocol, **inkwargs)
+    if isinstance(urlpath, (list, tuple, set)):
+        pchains = [
+            _un_chain(stringify_path(u), storage_options or {})[0] for u in urlpath
+        ]
+        if len({pc[1] for pc in pchains}) > 1:
+            raise ValueError("Protocol mismatch getting fs from %s", urlpath)
+        paths = [pc[0] for pc in pchains]
+    else:
+        paths = fs._strip_protocol(paths)
+    if isinstance(paths, (list, tuple, set)):
+        paths = expand_paths_if_needed(paths, mode, num, fs, name_function)
+    else:
+        if "w" in mode and expand:
+            paths = _expand_paths(paths, name_function, num)
+        elif "x" in mode and expand:
+            paths = _expand_paths(paths, name_function, num)
+        elif "*" in paths:
+            paths = [f for f in sorted(fs.glob(paths)) if not fs.isdir(f)]
+        else:
+            paths = [paths]
+
+    return fs, fs._fs_token, paths
+
+
+def _expand_paths(path, name_function, num):
+    if isinstance(path, str):
+        if path.count("*") > 1:
+            raise ValueError("Output path spec must contain exactly one '*'.")
+        elif "*" not in path:
+            path = os.path.join(path, "*.part")
+
+        if name_function is None:
+            name_function = build_name_function(num - 1)
+
+        paths = [path.replace("*", name_function(i)) for i in range(num)]
+        if paths != sorted(paths):
+            logger.warning(
+                "In order to preserve order between partitions"
+                " paths created with ``name_function`` should "
+                "sort to partition order"
+            )
+    elif isinstance(path, (tuple, list)):
+        assert len(path) == num
+        paths = list(path)
+    else:
+        raise ValueError(
+            "Path should be either\n"
+            "1. A list of paths: ['foo.json', 'bar.json', ...]\n"
+            "2. A directory: 'foo/\n"
+            "3. A path with a '*' in it: 'foo.*.json'"
+        )
+    return paths
+
+
+class PickleableTextIOWrapper(io.TextIOWrapper):
+    """TextIOWrapper cannot be pickled. This solves it.
+
+    Requires that ``buffer`` be pickleable, which all instances of
+    AbstractBufferedFile are.
+    """
+
+    def __init__(
+        self,
+        buffer,
+        encoding=None,
+        errors=None,
+        newline=None,
+        line_buffering=False,
+        write_through=False,
+    ):
+        self.args = buffer, encoding, errors, newline, line_buffering, write_through
+        super().__init__(*self.args)
+
+    def __reduce__(self):
+        return PickleableTextIOWrapper, self.args

env-llmeval/lib/python3.10/site-packages/fsspec/dircache.py

@@ -0,0 +1,98 @@
+import time
+from collections.abc import MutableMapping
+from functools import lru_cache
+
+
+class DirCache(MutableMapping):
+    """
+    Caching of directory listings, in a structure like::
+
+        {"path0": [
+            {"name": "path0/file0",
+             "size": 123,
+             "type": "file",
+             ...
+            },
+            {"name": "path0/file1",
+            },
+            ...
+            ],
+         "path1": [...]
+        }
+
+    Parameters to this class control listing expiry or indeed turn
+    caching off
+    """
+
+    def __init__(
+        self,
+        use_listings_cache=True,
+        listings_expiry_time=None,
+        max_paths=None,
+        **kwargs,
+    ):
+        """
+
+        Parameters
+        ----------
+        use_listings_cache: bool
+            If False, this cache never returns items, but always reports KeyError,
+            and setting items has no effect
+        listings_expiry_time: int or float (optional)
+            Time in seconds that a listing is considered valid. If None,
+            listings do not expire.
+        max_paths: int (optional)
+            The number of most recent listings that are considered valid; 'recent'
+            refers to when the entry was set.
+        """
+        self._cache = {}
+        self._times = {}
+        if max_paths:
+            self._q = lru_cache(max_paths + 1)(lambda key: self._cache.pop(key, None))
+        self.use_listings_cache = use_listings_cache
+        self.listings_expiry_time = listings_expiry_time
+        self.max_paths = max_paths
+
+    def __getitem__(self, item):
+        if self.listings_expiry_time is not None:
+            if self._times.get(item, 0) - time.time() < -self.listings_expiry_time:
+                del self._cache[item]
+        if self.max_paths:
+            self._q(item)
+        return self._cache[item]  # maybe raises KeyError
+
+    def clear(self):
+        self._cache.clear()
+
+    def __len__(self):
+        return len(self._cache)
+
+    def __contains__(self, item):
+        try:
+            self[item]
+            return True
+        except KeyError:
+            return False
+
+    def __setitem__(self, key, value):
+        if not self.use_listings_cache:
+            return
+        if self.max_paths:
+            self._q(key)
+        self._cache[key] = value
+        if self.listings_expiry_time is not None:
+            self._times[key] = time.time()
+
+    def __delitem__(self, key):
+        del self._cache[key]
+
+    def __iter__(self):
+        entries = list(self._cache)
+
+        return (k for k in entries if k in self)
+
+    def __reduce__(self):
+        return (
+            DirCache,
+            (self.use_listings_cache, self.listings_expiry_time, self.max_paths),
+        )

env-llmeval/lib/python3.10/site-packages/fsspec/exceptions.py

@@ -0,0 +1,17 @@
+"""
+fsspec user-defined exception classes
+"""
+import asyncio
+
+
+class BlocksizeMismatchError(ValueError):
+    """
+    Raised when a cached file is opened with a different blocksize than it was
+    written with
+    """
+
+
+class FSTimeoutError(asyncio.TimeoutError):
+    """
+    Raised when a fsspec function timed out occurs
+    """

env-llmeval/lib/python3.10/site-packages/fsspec/fuse.py

@@ -0,0 +1,324 @@
+import argparse
+import logging
+import os
+import stat
+import threading
+import time
+from errno import EIO, ENOENT
+
+from fuse import FUSE, FuseOSError, LoggingMixIn, Operations
+
+from fsspec import __version__
+from fsspec.core import url_to_fs
+
+logger = logging.getLogger("fsspec.fuse")
+
+
+class FUSEr(Operations):
+    def __init__(self, fs, path, ready_file=False):
+        self.fs = fs
+        self.cache = {}
+        self.root = path.rstrip("/") + "/"
+        self.counter = 0
+        logger.info("Starting FUSE at %s", path)
+        self._ready_file = ready_file
+
+    def getattr(self, path, fh=None):
+        logger.debug("getattr %s", path)
+        if self._ready_file and path in ["/.fuse_ready", ".fuse_ready"]:
+            return {"type": "file", "st_size": 5}
+
+        path = "".join([self.root, path.lstrip("/")]).rstrip("/")
+        try:
+            info = self.fs.info(path)
+        except FileNotFoundError:
+            raise FuseOSError(ENOENT)
+
+        data = {"st_uid": info.get("uid", 1000), "st_gid": info.get("gid", 1000)}
+        perm = info.get("mode", 0o777)
+
+        if info["type"] != "file":
+            data["st_mode"] = stat.S_IFDIR | perm
+            data["st_size"] = 0
+            data["st_blksize"] = 0
+        else:
+            data["st_mode"] = stat.S_IFREG | perm
+            data["st_size"] = info["size"]
+            data["st_blksize"] = 5 * 2**20
+            data["st_nlink"] = 1
+        data["st_atime"] = info["atime"] if "atime" in info else time.time()
+        data["st_ctime"] = info["ctime"] if "ctime" in info else time.time()
+        data["st_mtime"] = info["mtime"] if "mtime" in info else time.time()
+        return data
+
+    def readdir(self, path, fh):
+        logger.debug("readdir %s", path)
+        path = "".join([self.root, path.lstrip("/")])
+        files = self.fs.ls(path, False)
+        files = [os.path.basename(f.rstrip("/")) for f in files]
+        return [".", ".."] + files
+
+    def mkdir(self, path, mode):
+        path = "".join([self.root, path.lstrip("/")])
+        self.fs.mkdir(path)
+        return 0
+
+    def rmdir(self, path):
+        path = "".join([self.root, path.lstrip("/")])
+        self.fs.rmdir(path)
+        return 0
+
+    def read(self, path, size, offset, fh):
+        logger.debug("read %s", (path, size, offset))
+        if self._ready_file and path in ["/.fuse_ready", ".fuse_ready"]:
+            # status indicator
+            return b"ready"
+
+        f = self.cache[fh]
+        f.seek(offset)
+        out = f.read(size)
+        return out
+
+    def write(self, path, data, offset, fh):
+        logger.debug("write %s", (path, offset))
+        f = self.cache[fh]
+        f.seek(offset)
+        f.write(data)
+        return len(data)
+
+    def create(self, path, flags, fi=None):
+        logger.debug("create %s", (path, flags))
+        fn = "".join([self.root, path.lstrip("/")])
+        self.fs.touch(fn)  # OS will want to get attributes immediately
+        f = self.fs.open(fn, "wb")
+        self.cache[self.counter] = f
+        self.counter += 1
+        return self.counter - 1
+
+    def open(self, path, flags):
+        logger.debug("open %s", (path, flags))
+        fn = "".join([self.root, path.lstrip("/")])
+        if flags % 2 == 0:
+            # read
+            mode = "rb"
+        else:
+            # write/create
+            mode = "wb"
+        self.cache[self.counter] = self.fs.open(fn, mode)
+        self.counter += 1
+        return self.counter - 1
+
+    def truncate(self, path, length, fh=None):
+        fn = "".join([self.root, path.lstrip("/")])
+        if length != 0:
+            raise NotImplementedError
+        # maybe should be no-op since open with write sets size to zero anyway
+        self.fs.touch(fn)
+
+    def unlink(self, path):
+        fn = "".join([self.root, path.lstrip("/")])
+        try:
+            self.fs.rm(fn, False)
+        except (OSError, FileNotFoundError):
+            raise FuseOSError(EIO)
+
+    def release(self, path, fh):
+        try:
+            if fh in self.cache:
+                f = self.cache[fh]
+                f.close()
+                self.cache.pop(fh)
+        except Exception as e:
+            print(e)
+        return 0
+
+    def chmod(self, path, mode):
+        if hasattr(self.fs, "chmod"):
+            path = "".join([self.root, path.lstrip("/")])
+            return self.fs.chmod(path, mode)
+        raise NotImplementedError
+
+
+def run(
+    fs,
+    path,
+    mount_point,
+    foreground=True,
+    threads=False,
+    ready_file=False,
+    ops_class=FUSEr,
+):
+    """Mount stuff in a local directory
+
+    This uses fusepy to make it appear as if a given path on an fsspec
+    instance is in fact resident within the local file-system.
+
+    This requires that fusepy by installed, and that FUSE be available on
+    the system (typically requiring a package to be installed with
+    apt, yum, brew, etc.).
+
+    Parameters
+    ----------
+    fs: file-system instance
+        From one of the compatible implementations
+    path: str
+        Location on that file-system to regard as the root directory to
+        mount. Note that you typically should include the terminating "/"
+        character.
+    mount_point: str
+        An empty directory on the local file-system where the contents of
+        the remote path will appear.
+    foreground: bool
+        Whether or not calling this function will block. Operation will
+        typically be more stable if True.
+    threads: bool
+        Whether or not to create threads when responding to file operations
+        within the mounter directory. Operation will typically be more
+        stable if False.
+    ready_file: bool
+        Whether the FUSE process is ready. The ``.fuse_ready`` file will
+        exist in the ``mount_point`` directory if True. Debugging purpose.
+    ops_class: FUSEr or Subclass of FUSEr
+        To override the default behavior of FUSEr. For Example, logging
+        to file.
+
+    """
+    func = lambda: FUSE(
+        ops_class(fs, path, ready_file=ready_file),
+        mount_point,
+        nothreads=not threads,
+        foreground=foreground,
+    )
+    if not foreground:
+        th = threading.Thread(target=func)
+        th.daemon = True
+        th.start()
+        return th
+    else:  # pragma: no cover
+        try:
+            func()
+        except KeyboardInterrupt:
+            pass
+
+
+def main(args):
+    """Mount filesystem from chained URL to MOUNT_POINT.
+
+    Examples:
+
+    python3 -m fsspec.fuse memory /usr/share /tmp/mem
+
+    python3 -m fsspec.fuse local /tmp/source /tmp/local \\
+            -l /tmp/fsspecfuse.log
+
+    You can also mount chained-URLs and use special settings:
+
+    python3 -m fsspec.fuse 'filecache::zip::file://data.zip' \\
+            / /tmp/zip \\
+            -o 'filecache-cache_storage=/tmp/simplecache'
+
+    You can specify the type of the setting by using `[int]` or `[bool]`,
+    (`true`, `yes`, `1` represents the Boolean value `True`):
+
+    python3 -m fsspec.fuse 'simplecache::ftp://ftp1.at.proftpd.org' \\
+            /historic/packages/RPMS /tmp/ftp \\
+            -o 'simplecache-cache_storage=/tmp/simplecache' \\
+            -o 'simplecache-check_files=false[bool]' \\
+            -o 'ftp-listings_expiry_time=60[int]' \\
+            -o 'ftp-username=anonymous' \\
+            -o 'ftp-password=xieyanbo'
+    """
+
+    class RawDescriptionArgumentParser(argparse.ArgumentParser):
+        def format_help(self):
+            usage = super().format_help()
+            parts = usage.split("\n\n")
+            parts[1] = self.description.rstrip()
+            return "\n\n".join(parts)
+
+    parser = RawDescriptionArgumentParser(prog="fsspec.fuse", description=main.__doc__)
+    parser.add_argument("--version", action="version", version=__version__)
+    parser.add_argument("url", type=str, help="fs url")
+    parser.add_argument("source_path", type=str, help="source directory in fs")
+    parser.add_argument("mount_point", type=str, help="local directory")
+    parser.add_argument(
+        "-o",
+        "--option",
+        action="append",
+        help="Any options of protocol included in the chained URL",
+    )
+    parser.add_argument(
+        "-l", "--log-file", type=str, help="Logging FUSE debug info (Default: '')"
+    )
+    parser.add_argument(
+        "-f",
+        "--foreground",
+        action="store_false",
+        help="Running in foreground or not (Default: False)",
+    )
+    parser.add_argument(
+        "-t",
+        "--threads",
+        action="store_false",
+        help="Running with threads support (Default: False)",
+    )
+    parser.add_argument(
+        "-r",
+        "--ready-file",
+        action="store_false",
+        help="The `.fuse_ready` file will exist after FUSE is ready. "
+        "(Debugging purpose, Default: False)",
+    )
+    args = parser.parse_args(args)
+
+    kwargs = {}
+    for item in args.option or []:
+        key, sep, value = item.partition("=")
+        if not sep:
+            parser.error(message=f"Wrong option: {item!r}")
+        val = value.lower()
+        if val.endswith("[int]"):
+            value = int(value[: -len("[int]")])
+        elif val.endswith("[bool]"):
+            value = val[: -len("[bool]")] in ["1", "yes", "true"]
+
+        if "-" in key:
+            fs_name, setting_name = key.split("-", 1)
+            if fs_name in kwargs:
+                kwargs[fs_name][setting_name] = value
+            else:
+                kwargs[fs_name] = {setting_name: value}
+        else:
+            kwargs[key] = value
+
+    if args.log_file:
+        logging.basicConfig(
+            level=logging.DEBUG,
+            filename=args.log_file,
+            format="%(asctime)s %(message)s",
+        )
+
+        class LoggingFUSEr(FUSEr, LoggingMixIn):
+            pass
+
+        fuser = LoggingFUSEr
+    else:
+        fuser = FUSEr
+
+    fs, url_path = url_to_fs(args.url, **kwargs)
+    logger.debug("Mounting %s to %s", url_path, str(args.mount_point))
+    run(
+        fs,
+        args.source_path,
+        args.mount_point,
+        foreground=args.foreground,
+        threads=args.threads,
+        ready_file=args.ready_file,
+        ops_class=fuser,
+    )
+
+
+if __name__ == "__main__":
+    import sys
+
+    main(sys.argv[1:])

env-llmeval/lib/python3.10/site-packages/fsspec/generic.py

@@ -0,0 +1,403 @@
+from __future__ import annotations
+
+import inspect
+import logging
+import os
+import shutil
+import uuid
+from typing import Optional
+
+from .asyn import AsyncFileSystem, _run_coros_in_chunks, sync_wrapper
+from .callbacks import DEFAULT_CALLBACK
+from .core import filesystem, get_filesystem_class, split_protocol, url_to_fs
+
+_generic_fs = {}
+logger = logging.getLogger("fsspec.generic")
+
+
+def set_generic_fs(protocol, **storage_options):
+    _generic_fs[protocol] = filesystem(protocol, **storage_options)
+
+
+default_method = "default"
+
+
+def _resolve_fs(url, method=None, protocol=None, storage_options=None):
+    """Pick instance of backend FS"""
+    method = method or default_method
+    protocol = protocol or split_protocol(url)[0]
+    storage_options = storage_options or {}
+    if method == "default":
+        return filesystem(protocol)
+    if method == "generic":
+        return _generic_fs[protocol]
+    if method == "current":
+        cls = get_filesystem_class(protocol)
+        return cls.current()
+    if method == "options":
+        fs, _ = url_to_fs(url, **storage_options.get(protocol, {}))
+        return fs
+    raise ValueError(f"Unknown FS resolution method: {method}")
+
+
+def rsync(
+    source,
+    destination,
+    delete_missing=False,
+    source_field="size",
+    dest_field="size",
+    update_cond="different",
+    inst_kwargs=None,
+    fs=None,
+    **kwargs,
+):
+    """Sync files between two directory trees
+
+    (experimental)
+
+    Parameters
+    ----------
+    source: str
+        Root of the directory tree to take files from. This must be a directory, but
+        do not include any terminating "/" character
+    destination: str
+        Root path to copy into. The contents of this location should be
+        identical to the contents of ``source`` when done. This will be made a
+        directory, and the terminal "/" should not be included.
+    delete_missing: bool
+        If there are paths in the destination that don't exist in the
+        source and this is True, delete them. Otherwise, leave them alone.
+    source_field: str | callable
+        If ``update_field`` is "different", this is the key in the info
+        of source files to consider for difference. Maybe a function of the
+        info dict.
+    dest_field: str | callable
+        If ``update_field`` is "different", this is the key in the info
+        of destination files to consider for difference. May be a function of
+        the info dict.
+    update_cond: "different"|"always"|"never"
+        If "always", every file is copied, regardless of whether it exists in
+        the destination. If "never", files that exist in the destination are
+        not copied again. If "different" (default), only copy if the info
+        fields given by ``source_field`` and ``dest_field`` (usually "size")
+        are different. Other comparisons may be added in the future.
+    inst_kwargs: dict|None
+        If ``fs`` is None, use this set of keyword arguments to make a
+        GenericFileSystem instance
+    fs: GenericFileSystem|None
+        Instance to use if explicitly given. The instance defines how to
+        to make downstream file system instances from paths.
+    """
+    fs = fs or GenericFileSystem(**(inst_kwargs or {}))
+    source = fs._strip_protocol(source)
+    destination = fs._strip_protocol(destination)
+    allfiles = fs.find(source, withdirs=True, detail=True)
+    if not fs.isdir(source):
+        raise ValueError("Can only rsync on a directory")
+    otherfiles = fs.find(destination, withdirs=True, detail=True)
+    dirs = [
+        a
+        for a, v in allfiles.items()
+        if v["type"] == "directory" and a.replace(source, destination) not in otherfiles
+    ]
+    logger.debug(f"{len(dirs)} directories to create")
+    if dirs:
+        fs.make_many_dirs(
+            [dirn.replace(source, destination) for dirn in dirs], exist_ok=True
+        )
+    allfiles = {a: v for a, v in allfiles.items() if v["type"] == "file"}
+    logger.debug(f"{len(allfiles)} files to consider for copy")
+    to_delete = [
+        o
+        for o, v in otherfiles.items()
+        if o.replace(destination, source) not in allfiles and v["type"] == "file"
+    ]
+    for k, v in allfiles.copy().items():
+        otherfile = k.replace(source, destination)
+        if otherfile in otherfiles:
+            if update_cond == "always":
+                allfiles[k] = otherfile
+            elif update_cond == "different":
+                inf1 = source_field(v) if callable(source_field) else v[source_field]
+                v2 = otherfiles[otherfile]
+                inf2 = dest_field(v2) if callable(dest_field) else v2[dest_field]
+                if inf1 != inf2:
+                    # details mismatch, make copy
+                    allfiles[k] = otherfile
+                else:
+                    # details match, don't copy
+                    allfiles.pop(k)
+        else:
+            # file not in target yet
+            allfiles[k] = otherfile
+    logger.debug(f"{len(allfiles)} files to copy")
+    if allfiles:
+        source_files, target_files = zip(*allfiles.items())
+        fs.cp(source_files, target_files, **kwargs)
+    logger.debug(f"{len(to_delete)} files to delete")
+    if delete_missing:
+        fs.rm(to_delete)
+
+
+class GenericFileSystem(AsyncFileSystem):
+    """Wrapper over all other FS types
+
+    <experimental!>
+
+    This implementation is a single unified interface to be able to run FS operations
+    over generic URLs, and dispatch to the specific implementations using the URL
+    protocol prefix.
+
+    Note: instances of this FS are always async, even if you never use it with any async
+    backend.
+    """
+
+    protocol = "generic"  # there is no real reason to ever use a protocol with this FS
+
+    def __init__(self, default_method="default", **kwargs):
+        """
+
+        Parameters
+        ----------
+        default_method: str (optional)
+            Defines how to configure backend FS instances. Options are:
+            - "default": instantiate like FSClass(), with no
+              extra arguments; this is the default instance of that FS, and can be
+              configured via the config system
+            - "generic": takes instances from the `_generic_fs` dict in this module,
+              which you must populate before use. Keys are by protocol
+            - "current": takes the most recently instantiated version of each FS
+        """
+        self.method = default_method
+        super().__init__(**kwargs)
+
+    def _parent(self, path):
+        fs = _resolve_fs(path, self.method)
+        return fs.unstrip_protocol(fs._parent(path))
+
+    def _strip_protocol(self, path):
+        # normalization only
+        fs = _resolve_fs(path, self.method)
+        return fs.unstrip_protocol(fs._strip_protocol(path))
+
+    async def _find(self, path, maxdepth=None, withdirs=False, detail=False, **kwargs):
+        fs = _resolve_fs(path, self.method)
+        if fs.async_impl:
+            out = await fs._find(
+                path, maxdepth=maxdepth, withdirs=withdirs, detail=True, **kwargs
+            )
+        else:
+            out = fs.find(
+                path, maxdepth=maxdepth, withdirs=withdirs, detail=True, **kwargs
+            )
+        result = {}
+        for k, v in out.items():
+            name = fs.unstrip_protocol(k)
+            v["name"] = name
+            result[name] = v
+        if detail:
+            return result
+        return list(result)
+
+    async def _info(self, url, **kwargs):
+        fs = _resolve_fs(url, self.method)
+        if fs.async_impl:
+            out = await fs._info(url, **kwargs)
+        else:
+            out = fs.info(url, **kwargs)
+        out["name"] = fs.unstrip_protocol(out["name"])
+        return out
+
+    async def _ls(
+        self,
+        url,
+        detail=True,
+        **kwargs,
+    ):
+        fs = _resolve_fs(url, self.method)
+        if fs.async_impl:
+            out = await fs._ls(url, detail=True, **kwargs)
+        else:
+            out = fs.ls(url, detail=True, **kwargs)
+        for o in out:
+            o["name"] = fs.unstrip_protocol(o["name"])
+        if detail:
+            return out
+        else:
+            return [o["name"] for o in out]
+
+    async def _cat_file(
+        self,
+        url,
+        **kwargs,
+    ):
+        fs = _resolve_fs(url, self.method)
+        if fs.async_impl:
+            return await fs._cat_file(url, **kwargs)
+        else:
+            return fs.cat_file(url, **kwargs)
+
+    async def _pipe_file(
+        self,
+        path,
+        value,
+        **kwargs,
+    ):
+        fs = _resolve_fs(path, self.method)
+        if fs.async_impl:
+            return await fs._pipe_file(path, value, **kwargs)
+        else:
+            return fs.pipe_file(path, value, **kwargs)
+
+    async def _rm(self, url, **kwargs):
+        urls = url
+        if isinstance(urls, str):
+            urls = [urls]
+        fs = _resolve_fs(urls[0], self.method)
+        if fs.async_impl:
+            await fs._rm(urls, **kwargs)
+        else:
+            fs.rm(url, **kwargs)
+
+    async def _makedirs(self, path, exist_ok=False):
+        logger.debug("Make dir %s", path)
+        fs = _resolve_fs(path, self.method)
+        if fs.async_impl:
+            await fs._makedirs(path, exist_ok=exist_ok)
+        else:
+            fs.makedirs(path, exist_ok=exist_ok)
+
+    def rsync(self, source, destination, **kwargs):
+        """Sync files between two directory trees
+
+        See `func:rsync` for more details.
+        """
+        rsync(source, destination, fs=self, **kwargs)
+
+    async def _cp_file(
+        self,
+        url,
+        url2,
+        blocksize=2**20,
+        callback=DEFAULT_CALLBACK,
+        **kwargs,
+    ):
+        fs = _resolve_fs(url, self.method)
+        fs2 = _resolve_fs(url2, self.method)
+        if fs is fs2:
+            # pure remote
+            if fs.async_impl:
+                return await fs._cp_file(url, url2, **kwargs)
+            else:
+                return fs.cp_file(url, url2, **kwargs)
+        kw = {"blocksize": 0, "cache_type": "none"}
+        try:
+            f1 = (
+                await fs.open_async(url, "rb")
+                if hasattr(fs, "open_async")
+                else fs.open(url, "rb", **kw)
+            )
+            callback.set_size(await maybe_await(f1.size))
+            f2 = (
+                await fs2.open_async(url2, "wb")
+                if hasattr(fs2, "open_async")
+                else fs2.open(url2, "wb", **kw)
+            )
+            while f1.size is None or f2.tell() < f1.size:
+                data = await maybe_await(f1.read(blocksize))
+                if f1.size is None and not data:
+                    break
+                await maybe_await(f2.write(data))
+                callback.absolute_update(f2.tell())
+        finally:
+            try:
+                await maybe_await(f2.close())
+                await maybe_await(f1.close())
+            except NameError:
+                # fail while opening f1 or f2
+                pass
+
+    async def _make_many_dirs(self, urls, exist_ok=True):
+        fs = _resolve_fs(urls[0], self.method)
+        if fs.async_impl:
+            coros = [fs._makedirs(u, exist_ok=exist_ok) for u in urls]
+            await _run_coros_in_chunks(coros)
+        else:
+            for u in urls:
+                fs.makedirs(u, exist_ok=exist_ok)
+
+    make_many_dirs = sync_wrapper(_make_many_dirs)
+
+    async def _copy(
+        self,
+        path1: list[str],
+        path2: list[str],
+        recursive: bool = False,
+        on_error: str = "ignore",
+        maxdepth: Optional[int] = None,
+        batch_size: Optional[int] = None,
+        tempdir: Optional[str] = None,
+        **kwargs,
+    ):
+        if recursive:
+            raise NotImplementedError
+        fs = _resolve_fs(path1[0], self.method)
+        fs2 = _resolve_fs(path2[0], self.method)
+        # not expanding paths atm., assume call is from rsync()
+        if fs is fs2:
+            # pure remote
+            if fs.async_impl:
+                return await fs._copy(path1, path2, **kwargs)
+            else:
+                return fs.copy(path1, path2, **kwargs)
+        await copy_file_op(
+            fs, path1, fs2, path2, tempdir, batch_size, on_error=on_error
+        )
+
+
+async def copy_file_op(
+    fs1, url1, fs2, url2, tempdir=None, batch_size=20, on_error="ignore"
+):
+    import tempfile
+
+    tempdir = tempdir or tempfile.mkdtemp()
+    try:
+        coros = [
+            _copy_file_op(
+                fs1,
+                u1,
+                fs2,
+                u2,
+                os.path.join(tempdir, uuid.uuid4().hex),
+                on_error=on_error,
+            )
+            for u1, u2 in zip(url1, url2)
+        ]
+        await _run_coros_in_chunks(coros, batch_size=batch_size)
+    finally:
+        shutil.rmtree(tempdir)
+
+
+async def _copy_file_op(fs1, url1, fs2, url2, local, on_error="ignore"):
+    ex = () if on_error == "raise" else Exception
+    logger.debug("Copy %s -> %s", url1, url2)
+    try:
+        if fs1.async_impl:
+            await fs1._get_file(url1, local)
+        else:
+            fs1.get_file(url1, local)
+        if fs2.async_impl:
+            await fs2._put_file(local, url2)
+        else:
+            fs2.put_file(local, url2)
+        os.unlink(local)
+        logger.debug("Copy %s -> %s; done", url1, url2)
+    except ex as e:
+        logger.debug("ignoring cp exception for %s: %s", url1, e)
+
+
+async def maybe_await(cor):
+    if inspect.iscoroutine(cor):
+        return await cor
+    else:
+        return cor

env-llmeval/lib/python3.10/site-packages/fsspec/gui.py

@@ -0,0 +1,414 @@
+import ast
+import contextlib
+import logging
+import os
+import re
+from typing import ClassVar, Sequence
+
+import panel as pn
+
+from .core import OpenFile, get_filesystem_class, split_protocol
+from .registry import known_implementations
+
+pn.extension()
+logger = logging.getLogger("fsspec.gui")
+
+
+class SigSlot:
+    """Signal-slot mixin, for Panel event passing
+
+    Include this class in a widget manager's superclasses to be able to
+    register events and callbacks on Panel widgets managed by that class.
+
+    The method ``_register`` should be called as widgets are added, and external
+    code should call ``connect`` to associate callbacks.
+
+    By default, all signals emit a DEBUG logging statement.
+    """
+
+    # names of signals that this class may emit each of which must be
+    # set by _register for any new instance
+    signals: ClassVar[Sequence[str]] = []
+    # names of actions that this class may respond to
+    slots: ClassVar[Sequence[str]] = []
+
+    # each of which must be a method name
+
+    def __init__(self):
+        self._ignoring_events = False
+        self._sigs = {}
+        self._map = {}
+        self._setup()
+
+    def _setup(self):
+        """Create GUI elements and register signals"""
+        self.panel = pn.pane.PaneBase()
+        # no signals to set up in the base class
+
+    def _register(
+        self, widget, name, thing="value", log_level=logging.DEBUG, auto=False
+    ):
+        """Watch the given attribute of a widget and assign it a named event
+
+        This is normally called at the time a widget is instantiated, in the
+        class which owns it.
+
+        Parameters
+        ----------
+        widget : pn.layout.Panel or None
+            Widget to watch. If None, an anonymous signal not associated with
+            any widget.
+        name : str
+            Name of this event
+        thing : str
+            Attribute of the given widget to watch
+        log_level : int
+            When the signal is triggered, a logging event of the given level
+            will be fired in the dfviz logger.
+        auto : bool
+            If True, automatically connects with a method in this class of the
+            same name.
+        """
+        if name not in self.signals:
+            raise ValueError(f"Attempt to assign an undeclared signal: {name}")
+        self._sigs[name] = {
+            "widget": widget,
+            "callbacks": [],
+            "thing": thing,
+            "log": log_level,
+        }
+        wn = "-".join(
+            [
+                getattr(widget, "name", str(widget)) if widget is not None else "none",
+                thing,
+            ]
+        )
+        self._map[wn] = name
+        if widget is not None:
+            widget.param.watch(self._signal, thing, onlychanged=True)
+        if auto and hasattr(self, name):
+            self.connect(name, getattr(self, name))
+
+    def _repr_mimebundle_(self, *args, **kwargs):
+        """Display in a notebook or a server"""
+        try:
+            return self.panel._repr_mimebundle_(*args, **kwargs)
+        except (ValueError, AttributeError):
+            raise NotImplementedError("Panel does not seem to be set " "up properly")
+
+    def connect(self, signal, slot):
+        """Associate call back with given event
+
+        The callback must be a function which takes the "new" value of the
+        watched attribute as the only parameter. If the callback return False,
+        this cancels any further processing of the given event.
+
+        Alternatively, the callback can be a string, in which case it means
+        emitting the correspondingly-named event (i.e., connect to self)
+        """
+        self._sigs[signal]["callbacks"].append(slot)
+
+    def _signal(self, event):
+        """This is called by a an action on a widget
+
+        Within an self.ignore_events context, nothing happens.
+
+        Tests can execute this method by directly changing the values of
+        widget components.
+        """
+        if not self._ignoring_events:
+            wn = "-".join([event.obj.name, event.name])
+            if wn in self._map and self._map[wn] in self._sigs:
+                self._emit(self._map[wn], event.new)
+
+    @contextlib.contextmanager
+    def ignore_events(self):
+        """Temporarily turn off events processing in this instance
+
+        (does not propagate to children)
+        """
+        self._ignoring_events = True
+        try:
+            yield
+        finally:
+            self._ignoring_events = False
+
+    def _emit(self, sig, value=None):
+        """An event happened, call its callbacks
+
+        This method can be used in tests to simulate message passing without
+        directly changing visual elements.
+
+        Calling of callbacks will halt whenever one returns False.
+        """
+        logger.log(self._sigs[sig]["log"], f"{sig}: {value}")
+        for callback in self._sigs[sig]["callbacks"]:
+            if isinstance(callback, str):
+                self._emit(callback)
+            else:
+                try:
+                    # running callbacks should not break the interface
+                    ret = callback(value)
+                    if ret is False:
+                        break
+                except Exception as e:
+                    logger.exception(
+                        "Exception (%s) while executing callback for signal: %s",
+                        e,
+                        sig,
+                    )
+
+    def show(self, threads=False):
+        """Open a new browser tab and display this instance's interface"""
+        self.panel.show(threads=threads, verbose=False)
+        return self
+
+
+class SingleSelect(SigSlot):
+    """A multiselect which only allows you to select one item for an event"""
+
+    signals = ["_selected", "selected"]  # the first is internal
+    slots = ["set_options", "set_selection", "add", "clear", "select"]
+
+    def __init__(self, **kwargs):
+        self.kwargs = kwargs
+        super().__init__()
+
+    def _setup(self):
+        self.panel = pn.widgets.MultiSelect(**self.kwargs)
+        self._register(self.panel, "_selected", "value")
+        self._register(None, "selected")
+        self.connect("_selected", self.select_one)
+
+    def _signal(self, *args, **kwargs):
+        super()._signal(*args, **kwargs)
+
+    def select_one(self, *_):
+        with self.ignore_events():
+            val = [self.panel.value[-1]] if self.panel.value else []
+            self.panel.value = val
+        self._emit("selected", self.panel.value)
+
+    def set_options(self, options):
+        self.panel.options = options
+
+    def clear(self):
+        self.panel.options = []
+
+    @property
+    def value(self):
+        return self.panel.value
+
+    def set_selection(self, selection):
+        self.panel.value = [selection]
+
+
+class FileSelector(SigSlot):
+    """Panel-based graphical file selector widget
+
+    Instances of this widget are interactive and can be displayed in jupyter by having
+    them as the output of a cell,  or in a separate browser tab using ``.show()``.
+    """
+
+    signals = [
+        "protocol_changed",
+        "selection_changed",
+        "directory_entered",
+        "home_clicked",
+        "up_clicked",
+        "go_clicked",
+        "filters_changed",
+    ]
+    slots = ["set_filters", "go_home"]
+
+    def __init__(self, url=None, filters=None, ignore=None, kwargs=None):
+        """
+
+        Parameters
+        ----------
+        url : str (optional)
+            Initial value of the URL to populate the dialog; should include protocol
+        filters : list(str) (optional)
+            File endings to include in the listings. If not included, all files are
+            allowed. Does not affect directories.
+            If given, the endings will appear as checkboxes in the interface
+        ignore : list(str) (optional)
+            Regex(s) of file basename patterns to ignore, e.g., "\\." for typical
+            hidden files on posix
+        kwargs : dict (optional)
+            To pass to file system instance
+        """
+        if url:
+            self.init_protocol, url = split_protocol(url)
+        else:
+            self.init_protocol, url = "file", os.getcwd()
+        self.init_url = url
+        self.init_kwargs = (kwargs if isinstance(kwargs, str) else str(kwargs)) or "{}"
+        self.filters = filters
+        self.ignore = [re.compile(i) for i in ignore or []]
+        self._fs = None
+        super().__init__()
+
+    def _setup(self):
+        self.url = pn.widgets.TextInput(
+            name="url",
+            value=self.init_url,
+            align="end",
+            sizing_mode="stretch_width",
+            width_policy="max",
+        )
+        self.protocol = pn.widgets.Select(
+            options=sorted(known_implementations),
+            value=self.init_protocol,
+            name="protocol",
+            align="center",
+        )
+        self.kwargs = pn.widgets.TextInput(
+            name="kwargs", value=self.init_kwargs, align="center"
+        )
+        self.go = pn.widgets.Button(name="⇨", align="end", width=45)
+        self.main = SingleSelect(size=10)
+        self.home = pn.widgets.Button(name="🏠", width=40, height=30, align="end")
+        self.up = pn.widgets.Button(name="‹", width=30, height=30, align="end")
+
+        self._register(self.protocol, "protocol_changed", auto=True)
+        self._register(self.go, "go_clicked", "clicks", auto=True)
+        self._register(self.up, "up_clicked", "clicks", auto=True)
+        self._register(self.home, "home_clicked", "clicks", auto=True)
+        self._register(None, "selection_changed")
+        self.main.connect("selected", self.selection_changed)
+        self._register(None, "directory_entered")
+        self.prev_protocol = self.protocol.value
+        self.prev_kwargs = self.storage_options
+
+        self.filter_sel = pn.widgets.CheckBoxGroup(
+            value=[], options=[], inline=False, align="end", width_policy="min"
+        )
+        self._register(self.filter_sel, "filters_changed", auto=True)
+
+        self.panel = pn.Column(
+            pn.Row(self.protocol, self.kwargs),
+            pn.Row(self.home, self.up, self.url, self.go, self.filter_sel),
+            self.main.panel,
+        )
+        self.set_filters(self.filters)
+        self.go_clicked()
+
+    def set_filters(self, filters=None):
+        self.filters = filters
+        if filters:
+            self.filter_sel.options = filters
+            self.filter_sel.value = filters
+        else:
+            self.filter_sel.options = []
+            self.filter_sel.value = []
+
+    @property
+    def storage_options(self):
+        """Value of the kwargs box as a dictionary"""
+        return ast.literal_eval(self.kwargs.value) or {}
+
+    @property
+    def fs(self):
+        """Current filesystem instance"""
+        if self._fs is None:
+            cls = get_filesystem_class(self.protocol.value)
+            self._fs = cls(**self.storage_options)
+        return self._fs
+
+    @property
+    def urlpath(self):
+        """URL of currently selected item"""
+        return (
+            (f"{self.protocol.value}://{self.main.value[0]}")
+            if self.main.value
+            else None
+        )
+
+    def open_file(self, mode="rb", compression=None, encoding=None):
+        """Create OpenFile instance for the currently selected item
+
+        For example, in a notebook you might do something like
+
+        .. code-block::
+
+            [ ]: sel = FileSelector(); sel
+
+            # user selects their file
+
+            [ ]: with sel.open_file('rb') as f:
+            ...      out = f.read()
+
+        Parameters
+        ----------
+        mode: str (optional)
+            Open mode for the file.
+        compression: str (optional)
+            The interact with the file as compressed. Set to 'infer' to guess
+            compression from the file ending
+        encoding: str (optional)
+            If using text mode, use this encoding; defaults to UTF8.
+        """
+        if self.urlpath is None:
+            raise ValueError("No file selected")
+        return OpenFile(self.fs, self.urlpath, mode, compression, encoding)
+
+    def filters_changed(self, values):
+        self.filters = values
+        self.go_clicked()
+
+    def selection_changed(self, *_):
+        if self.urlpath is None:
+            return
+        if self.fs.isdir(self.urlpath):
+            self.url.value = self.fs._strip_protocol(self.urlpath)
+        self.go_clicked()
+
+    def go_clicked(self, *_):
+        if (
+            self.prev_protocol != self.protocol.value
+            or self.prev_kwargs != self.storage_options
+        ):
+            self._fs = None  # causes fs to be recreated
+            self.prev_protocol = self.protocol.value
+            self.prev_kwargs = self.storage_options
+        listing = sorted(
+            self.fs.ls(self.url.value, detail=True), key=lambda x: x["name"]
+        )
+        listing = [
+            l
+            for l in listing
+            if not any(i.match(l["name"].rsplit("/", 1)[-1]) for i in self.ignore)
+        ]
+        folders = {
+            "📁 " + o["name"].rsplit("/", 1)[-1]: o["name"]
+            for o in listing
+            if o["type"] == "directory"
+        }
+        files = {
+            "📄 " + o["name"].rsplit("/", 1)[-1]: o["name"]
+            for o in listing
+            if o["type"] == "file"
+        }
+        if self.filters:
+            files = {
+                k: v
+                for k, v in files.items()
+                if any(v.endswith(ext) for ext in self.filters)
+            }
+        self.main.set_options(dict(**folders, **files))
+
+    def protocol_changed(self, *_):
+        self._fs = None
+        self.main.options = []
+        self.url.value = ""
+
+    def home_clicked(self, *_):
+        self.protocol.value = self.init_protocol
+        self.kwargs.value = self.init_kwargs
+        self.url.value = self.init_url
+        self.go_clicked()
+
+    def up_clicked(self, *_):
+        self.url.value = self.fs._parent(self.url.value)
+        self.go_clicked()

env-llmeval/lib/python3.10/site-packages/fsspec/implementations/data.py

@@ -0,0 +1,48 @@
+import base64
+import io
+from urllib.parse import unquote
+
+from fsspec import AbstractFileSystem
+
+
+class DataFileSystem(AbstractFileSystem):
+    """A handy decoder for data-URLs
+
+    Example
+    -------
+    >>> with fsspec.open("data:,Hello%2C%20World%21") as f:
+    ...     print(f.read())
+    b"Hello, World!"
+
+    """
+
+    protocol = "data"
+
+    def __init__(self, **kwargs):
+        """No parameters for this filesystem"""
+        super().__init__(**kwargs)
+
+    def cat_file(self, path, start=None, end=None, **kwargs):
+        pref, data = path.split(",", 1)
+        if pref.endswith("base64"):
+            return base64.b64decode(data)[start:end]
+        return unquote(data).encode()[start:end]
+
+    def info(self, path, **kwargs):
+        pref, name = path.split(",", 1)
+        data = self.cat_file(path)
+        mime = pref.split(":", 1)[1].split(";", 1)[0]
+        return {"name": name, "size": len(data), "type": "file", "mimetype": mime}
+
+    def _open(
+        self,
+        path,
+        mode="rb",
+        block_size=None,
+        autocommit=True,
+        cache_options=None,
+        **kwargs,
+    ):
+        if "r" not in mode:
+            raise ValueError("Read only filesystem")
+        return io.BytesIO(self.cat_file(path))

env-llmeval/lib/python3.10/site-packages/fsspec/implementations/dirfs.py

@@ -0,0 +1,364 @@
+from .. import filesystem
+from ..asyn import AsyncFileSystem
+
+
+class DirFileSystem(AsyncFileSystem):
+    """Directory prefix filesystem
+
+    The DirFileSystem is a filesystem-wrapper. It assumes every path it is dealing with
+    is relative to the `path`. After performing the necessary paths operation it
+    delegates everything to the wrapped filesystem.
+    """
+
+    protocol = "dir"
+
+    def __init__(
+        self,
+        path=None,
+        fs=None,
+        fo=None,
+        target_protocol=None,
+        target_options=None,
+        **storage_options,
+    ):
+        """
+        Parameters
+        ----------
+        path: str
+            Path to the directory.
+        fs: AbstractFileSystem
+            An instantiated filesystem to wrap.
+        target_protocol, target_options:
+            if fs is none, construct it from these
+        fo: str
+            Alternate for path; do not provide both
+        """
+        super().__init__(**storage_options)
+        if fs is None:
+            fs = filesystem(protocol=target_protocol, **(target_options or {}))
+        if (path is not None) ^ (fo is not None) is False:
+            raise ValueError("Provide path or fo, not both")
+        path = path or fo
+
+        if self.asynchronous and not fs.async_impl:
+            raise ValueError("can't use asynchronous with non-async fs")
+
+        if fs.async_impl and self.asynchronous != fs.asynchronous:
+            raise ValueError("both dirfs and fs should be in the same sync/async mode")
+
+        self.path = fs._strip_protocol(path)
+        self.fs = fs
+
+    def _join(self, path):
+        if isinstance(path, str):
+            if not self.path:
+                return path
+            if not path:
+                return self.path
+            return self.fs.sep.join((self.path, self._strip_protocol(path)))
+        return [self._join(_path) for _path in path]
+
+    def _relpath(self, path):
+        if isinstance(path, str):
+            if not self.path:
+                return path
+            if path == self.path:
+                return ""
+            prefix = self.path + self.fs.sep
+            assert path.startswith(prefix)
+            return path[len(prefix) :]
+        return [self._relpath(_path) for _path in path]
+
+    # Wrappers below
+
+    @property
+    def sep(self):
+        return self.fs.sep
+
+    async def set_session(self, *args, **kwargs):
+        return await self.fs.set_session(*args, **kwargs)
+
+    async def _rm_file(self, path, **kwargs):
+        return await self.fs._rm_file(self._join(path), **kwargs)
+
+    def rm_file(self, path, **kwargs):
+        return self.fs.rm_file(self._join(path), **kwargs)
+
+    async def _rm(self, path, *args, **kwargs):
+        return await self.fs._rm(self._join(path), *args, **kwargs)
+
+    def rm(self, path, *args, **kwargs):
+        return self.fs.rm(self._join(path), *args, **kwargs)
+
+    async def _cp_file(self, path1, path2, **kwargs):
+        return await self.fs._cp_file(self._join(path1), self._join(path2), **kwargs)
+
+    def cp_file(self, path1, path2, **kwargs):
+        return self.fs.cp_file(self._join(path1), self._join(path2), **kwargs)
+
+    async def _copy(
+        self,
+        path1,
+        path2,
+        *args,
+        **kwargs,
+    ):
+        return await self.fs._copy(
+            self._join(path1),
+            self._join(path2),
+            *args,
+            **kwargs,
+        )
+
+    def copy(self, path1, path2, *args, **kwargs):
+        return self.fs.copy(
+            self._join(path1),
+            self._join(path2),
+            *args,
+            **kwargs,
+        )
+
+    async def _pipe(self, path, *args, **kwargs):
+        return await self.fs._pipe(self._join(path), *args, **kwargs)
+
+    def pipe(self, path, *args, **kwargs):
+        return self.fs.pipe(self._join(path), *args, **kwargs)
+
+    async def _pipe_file(self, path, *args, **kwargs):
+        return await self.fs._pipe_file(self._join(path), *args, **kwargs)
+
+    def pipe_file(self, path, *args, **kwargs):
+        return self.fs.pipe_file(self._join(path), *args, **kwargs)
+
+    async def _cat_file(self, path, *args, **kwargs):
+        return await self.fs._cat_file(self._join(path), *args, **kwargs)
+
+    def cat_file(self, path, *args, **kwargs):
+        return self.fs.cat_file(self._join(path), *args, **kwargs)
+
+    async def _cat(self, path, *args, **kwargs):
+        ret = await self.fs._cat(
+            self._join(path),
+            *args,
+            **kwargs,
+        )
+
+        if isinstance(ret, dict):
+            return {self._relpath(key): value for key, value in ret.items()}
+
+        return ret
+
+    def cat(self, path, *args, **kwargs):
+        ret = self.fs.cat(
+            self._join(path),
+            *args,
+            **kwargs,
+        )
+
+        if isinstance(ret, dict):
+            return {self._relpath(key): value for key, value in ret.items()}
+
+        return ret
+
+    async def _put_file(self, lpath, rpath, **kwargs):
+        return await self.fs._put_file(lpath, self._join(rpath), **kwargs)
+
+    def put_file(self, lpath, rpath, **kwargs):
+        return self.fs.put_file(lpath, self._join(rpath), **kwargs)
+
+    async def _put(
+        self,
+        lpath,
+        rpath,
+        *args,
+        **kwargs,
+    ):
+        return await self.fs._put(
+            lpath,
+            self._join(rpath),
+            *args,
+            **kwargs,
+        )
+
+    def put(self, lpath, rpath, *args, **kwargs):
+        return self.fs.put(
+            lpath,
+            self._join(rpath),
+            *args,
+            **kwargs,
+        )
+
+    async def _get_file(self, rpath, lpath, **kwargs):
+        return await self.fs._get_file(self._join(rpath), lpath, **kwargs)
+
+    def get_file(self, rpath, lpath, **kwargs):
+        return self.fs.get_file(self._join(rpath), lpath, **kwargs)
+
+    async def _get(self, rpath, *args, **kwargs):
+        return await self.fs._get(self._join(rpath), *args, **kwargs)
+
+    def get(self, rpath, *args, **kwargs):
+        return self.fs.get(self._join(rpath), *args, **kwargs)
+
+    async def _isfile(self, path):
+        return await self.fs._isfile(self._join(path))
+
+    def isfile(self, path):
+        return self.fs.isfile(self._join(path))
+
+    async def _isdir(self, path):
+        return await self.fs._isdir(self._join(path))
+
+    def isdir(self, path):
+        return self.fs.isdir(self._join(path))
+
+    async def _size(self, path):
+        return await self.fs._size(self._join(path))
+
+    def size(self, path):
+        return self.fs.size(self._join(path))
+
+    async def _exists(self, path):
+        return await self.fs._exists(self._join(path))
+
+    def exists(self, path):
+        return self.fs.exists(self._join(path))
+
+    async def _info(self, path, **kwargs):
+        return await self.fs._info(self._join(path), **kwargs)
+
+    def info(self, path, **kwargs):
+        return self.fs.info(self._join(path), **kwargs)
+
+    async def _ls(self, path, detail=True, **kwargs):
+        ret = (await self.fs._ls(self._join(path), detail=detail, **kwargs)).copy()
+        if detail:
+            out = []
+            for entry in ret:
+                entry = entry.copy()
+                entry["name"] = self._relpath(entry["name"])
+                out.append(entry)
+            return out
+
+        return self._relpath(ret)
+
+    def ls(self, path, detail=True, **kwargs):
+        ret = self.fs.ls(self._join(path), detail=detail, **kwargs).copy()
+        if detail:
+            out = []
+            for entry in ret:
+                entry = entry.copy()
+                entry["name"] = self._relpath(entry["name"])
+                out.append(entry)
+            return out
+
+        return self._relpath(ret)
+
+    async def _walk(self, path, *args, **kwargs):
+        async for root, dirs, files in self.fs._walk(self._join(path), *args, **kwargs):
+            yield self._relpath(root), dirs, files
+
+    def walk(self, path, *args, **kwargs):
+        for root, dirs, files in self.fs.walk(self._join(path), *args, **kwargs):
+            yield self._relpath(root), dirs, files
+
+    async def _glob(self, path, **kwargs):
+        detail = kwargs.get("detail", False)
+        ret = await self.fs._glob(self._join(path), **kwargs)
+        if detail:
+            return {self._relpath(path): info for path, info in ret.items()}
+        return self._relpath(ret)
+
+    def glob(self, path, **kwargs):
+        detail = kwargs.get("detail", False)
+        ret = self.fs.glob(self._join(path), **kwargs)
+        if detail:
+            return {self._relpath(path): info for path, info in ret.items()}
+        return self._relpath(ret)
+
+    async def _du(self, path, *args, **kwargs):
+        total = kwargs.get("total", True)
+        ret = await self.fs._du(self._join(path), *args, **kwargs)
+        if total:
+            return ret
+
+        return {self._relpath(path): size for path, size in ret.items()}
+
+    def du(self, path, *args, **kwargs):
+        total = kwargs.get("total", True)
+        ret = self.fs.du(self._join(path), *args, **kwargs)
+        if total:
+            return ret
+
+        return {self._relpath(path): size for path, size in ret.items()}
+
+    async def _find(self, path, *args, **kwargs):
+        detail = kwargs.get("detail", False)
+        ret = await self.fs._find(self._join(path), *args, **kwargs)
+        if detail:
+            return {self._relpath(path): info for path, info in ret.items()}
+        return self._relpath(ret)
+
+    def find(self, path, *args, **kwargs):
+        detail = kwargs.get("detail", False)
+        ret = self.fs.find(self._join(path), *args, **kwargs)
+        if detail:
+            return {self._relpath(path): info for path, info in ret.items()}
+        return self._relpath(ret)
+
+    async def _expand_path(self, path, *args, **kwargs):
+        return self._relpath(
+            await self.fs._expand_path(self._join(path), *args, **kwargs)
+        )
+
+    def expand_path(self, path, *args, **kwargs):
+        return self._relpath(self.fs.expand_path(self._join(path), *args, **kwargs))
+
+    async def _mkdir(self, path, *args, **kwargs):
+        return await self.fs._mkdir(self._join(path), *args, **kwargs)
+
+    def mkdir(self, path, *args, **kwargs):
+        return self.fs.mkdir(self._join(path), *args, **kwargs)
+
+    async def _makedirs(self, path, *args, **kwargs):
+        return await self.fs._makedirs(self._join(path), *args, **kwargs)
+
+    def makedirs(self, path, *args, **kwargs):
+        return self.fs.makedirs(self._join(path), *args, **kwargs)
+
+    def rmdir(self, path):
+        return self.fs.rmdir(self._join(path))
+
+    def mv_file(self, path1, path2, **kwargs):
+        return self.fs.mv_file(
+            self._join(path1),
+            self._join(path2),
+            **kwargs,
+        )
+
+    def touch(self, path, **kwargs):
+        return self.fs.touch(self._join(path), **kwargs)
+
+    def created(self, path):
+        return self.fs.created(self._join(path))
+
+    def modified(self, path):
+        return self.fs.modified(self._join(path))
+
+    def sign(self, path, *args, **kwargs):
+        return self.fs.sign(self._join(path), *args, **kwargs)
+
+    def __repr__(self):
+        return f"{self.__class__.__qualname__}(path='{self.path}', fs={self.fs})"
+
+    def open(
+        self,
+        path,
+        *args,
+        **kwargs,
+    ):
+        return self.fs.open(
+            self._join(path),
+            *args,
+            **kwargs,
+        )

env-llmeval/lib/python3.10/site-packages/fsspec/implementations/ftp.py

@@ -0,0 +1,385 @@
+import os
+import sys
+import uuid
+import warnings
+from ftplib import FTP, Error, error_perm
+from typing import Any
+
+from ..spec import AbstractBufferedFile, AbstractFileSystem
+from ..utils import infer_storage_options, isfilelike
+
+
+class FTPFileSystem(AbstractFileSystem):
+    """A filesystem over classic FTP"""
+
+    root_marker = "/"
+    cachable = False
+    protocol = "ftp"
+
+    def __init__(
+        self,
+        host,
+        port=21,
+        username=None,
+        password=None,
+        acct=None,
+        block_size=None,
+        tempdir=None,
+        timeout=30,
+        encoding="utf-8",
+        **kwargs,
+    ):
+        """
+        You can use _get_kwargs_from_urls to get some kwargs from
+        a reasonable FTP url.
+
+        Authentication will be anonymous if username/password are not
+        given.
+
+        Parameters
+        ----------
+        host: str
+            The remote server name/ip to connect to
+        port: int
+            Port to connect with
+        username: str or None
+            If authenticating, the user's identifier
+        password: str of None
+            User's password on the server, if using
+        acct: str or None
+            Some servers also need an "account" string for auth
+        block_size: int or None
+            If given, the read-ahead or write buffer size.
+        tempdir: str
+            Directory on remote to put temporary files when in a transaction
+        timeout: int
+            Timeout of the ftp connection in seconds
+        encoding: str
+            Encoding to use for directories and filenames in FTP connection
+        """
+        super().__init__(**kwargs)
+        self.host = host
+        self.port = port
+        self.tempdir = tempdir or "/tmp"
+        self.cred = username, password, acct
+        self.timeout = timeout
+        self.encoding = encoding
+        if block_size is not None:
+            self.blocksize = block_size
+        else:
+            self.blocksize = 2**16
+        self._connect()
+
+    def _connect(self):
+        if sys.version_info >= (3, 9):
+            self.ftp = FTP(timeout=self.timeout, encoding=self.encoding)
+        elif self.encoding:
+            warnings.warn("`encoding` not supported for python<3.9, ignoring")
+            self.ftp = FTP(timeout=self.timeout)
+        else:
+            self.ftp = FTP(timeout=self.timeout)
+        self.ftp.connect(self.host, self.port)
+        self.ftp.login(*self.cred)
+
+    @classmethod
+    def _strip_protocol(cls, path):
+        return "/" + infer_storage_options(path)["path"].lstrip("/").rstrip("/")
+
+    @staticmethod
+    def _get_kwargs_from_urls(urlpath):
+        out = infer_storage_options(urlpath)
+        out.pop("path", None)
+        out.pop("protocol", None)
+        return out
+
+    def ls(self, path, detail=True, **kwargs):
+        path = self._strip_protocol(path)
+        out = []
+        if path not in self.dircache:
+            try:
+                try:
+                    out = [
+                        (fn, details)
+                        for (fn, details) in self.ftp.mlsd(path)
+                        if fn not in [".", ".."]
+                        and details["type"] not in ["pdir", "cdir"]
+                    ]
+                except error_perm:
+                    out = _mlsd2(self.ftp, path)  # Not platform independent
+                for fn, details in out:
+                    if path == "/":
+                        path = ""  # just for forming the names, below
+                    details["name"] = "/".join([path, fn.lstrip("/")])
+                    if details["type"] == "file":
+                        details["size"] = int(details["size"])
+                    else:
+                        details["size"] = 0
+                    if details["type"] == "dir":
+                        details["type"] = "directory"
+                self.dircache[path] = out
+            except Error:
+                try:
+                    info = self.info(path)
+                    if info["type"] == "file":
+                        out = [(path, info)]
+                except (Error, IndexError):
+                    raise FileNotFoundError(path)
+        files = self.dircache.get(path, out)
+        if not detail:
+            return sorted([fn for fn, details in files])
+        return [details for fn, details in files]
+
+    def info(self, path, **kwargs):
+        # implement with direct method
+        path = self._strip_protocol(path)
+        if path == "/":
+            # special case, since this dir has no real entry
+            return {"name": "/", "size": 0, "type": "directory"}
+        files = self.ls(self._parent(path).lstrip("/"), True)
+        try:
+            out = [f for f in files if f["name"] == path][0]
+        except IndexError:
+            raise FileNotFoundError(path)
+        return out
+
+    def get_file(self, rpath, lpath, **kwargs):
+        if self.isdir(rpath):
+            if not os.path.exists(lpath):
+                os.mkdir(lpath)
+            return
+        if isfilelike(lpath):
+            outfile = lpath
+        else:
+            outfile = open(lpath, "wb")
+
+        def cb(x):
+            outfile.write(x)
+
+        self.ftp.retrbinary(
+            f"RETR {rpath}",
+            blocksize=self.blocksize,
+            callback=cb,
+        )
+        if not isfilelike(lpath):
+            outfile.close()
+
+    def cat_file(self, path, start=None, end=None, **kwargs):
+        if end is not None:
+            return super().cat_file(path, start, end, **kwargs)
+        out = []
+
+        def cb(x):
+            out.append(x)
+
+        try:
+            self.ftp.retrbinary(
+                f"RETR {path}",
+                blocksize=self.blocksize,
+                rest=start,
+                callback=cb,
+            )
+        except (Error, error_perm) as orig_exc:
+            raise FileNotFoundError(path) from orig_exc
+        return b"".join(out)
+
+    def _open(
+        self,
+        path,
+        mode="rb",
+        block_size=None,
+        cache_options=None,
+        autocommit=True,
+        **kwargs,
+    ):
+        path = self._strip_protocol(path)
+        block_size = block_size or self.blocksize
+        return FTPFile(
+            self,
+            path,
+            mode=mode,
+            block_size=block_size,
+            tempdir=self.tempdir,
+            autocommit=autocommit,
+            cache_options=cache_options,
+        )
+
+    def _rm(self, path):
+        path = self._strip_protocol(path)
+        self.ftp.delete(path)
+        self.invalidate_cache(self._parent(path))
+
+    def rm(self, path, recursive=False, maxdepth=None):
+        paths = self.expand_path(path, recursive=recursive, maxdepth=maxdepth)
+        for p in reversed(paths):
+            if self.isfile(p):
+                self.rm_file(p)
+            else:
+                self.rmdir(p)
+
+    def mkdir(self, path: str, create_parents: bool = True, **kwargs: Any) -> None:
+        path = self._strip_protocol(path)
+        parent = self._parent(path)
+        if parent != self.root_marker and not self.exists(parent) and create_parents:
+            self.mkdir(parent, create_parents=create_parents)
+
+        self.ftp.mkd(path)
+        self.invalidate_cache(self._parent(path))
+
+    def makedirs(self, path: str, exist_ok: bool = False) -> None:
+        path = self._strip_protocol(path)
+        if self.exists(path):
+            # NB: "/" does not "exist" as it has no directory entry
+            if not exist_ok:
+                raise FileExistsError(f"{path} exists without `exist_ok`")
+            # exists_ok=True -> no-op
+        else:
+            self.mkdir(path, create_parents=True)
+
+    def rmdir(self, path):
+        path = self._strip_protocol(path)
+        self.ftp.rmd(path)
+        self.invalidate_cache(self._parent(path))
+
+    def mv(self, path1, path2, **kwargs):
+        path1 = self._strip_protocol(path1)
+        path2 = self._strip_protocol(path2)
+        self.ftp.rename(path1, path2)
+        self.invalidate_cache(self._parent(path1))
+        self.invalidate_cache(self._parent(path2))
+
+    def __del__(self):
+        self.ftp.close()
+
+    def invalidate_cache(self, path=None):
+        if path is None:
+            self.dircache.clear()
+        else:
+            self.dircache.pop(path, None)
+        super().invalidate_cache(path)
+
+
+class TransferDone(Exception):
+    """Internal exception to break out of transfer"""
+
+    pass
+
+
+class FTPFile(AbstractBufferedFile):
+    """Interact with a remote FTP file with read/write buffering"""
+
+    def __init__(
+        self,
+        fs,
+        path,
+        mode="rb",
+        block_size="default",
+        autocommit=True,
+        cache_type="readahead",
+        cache_options=None,
+        **kwargs,
+    ):
+        super().__init__(
+            fs,
+            path,
+            mode=mode,
+            block_size=block_size,
+            autocommit=autocommit,
+            cache_type=cache_type,
+            cache_options=cache_options,
+            **kwargs,
+        )
+        if not autocommit:
+            self.target = self.path
+            self.path = "/".join([kwargs["tempdir"], str(uuid.uuid4())])
+
+    def commit(self):
+        self.fs.mv(self.path, self.target)
+
+    def discard(self):
+        self.fs.rm(self.path)
+
+    def _fetch_range(self, start, end):
+        """Get bytes between given byte limits
+
+        Implemented by raising an exception in the fetch callback when the
+        number of bytes received reaches the requested amount.
+
+        Will fail if the server does not respect the REST command on
+        retrieve requests.
+        """
+        out = []
+        total = [0]
+
+        def callback(x):
+            total[0] += len(x)
+            if total[0] > end - start:
+                out.append(x[: (end - start) - total[0]])
+                if end < self.size:
+                    raise TransferDone
+            else:
+                out.append(x)
+
+            if total[0] == end - start and end < self.size:
+                raise TransferDone
+
+        try:
+            self.fs.ftp.retrbinary(
+                f"RETR {self.path}",
+                blocksize=self.blocksize,
+                rest=start,
+                callback=callback,
+            )
+        except TransferDone:
+            try:
+                # stop transfer, we got enough bytes for this block
+                self.fs.ftp.abort()
+                self.fs.ftp.getmultiline()
+            except Error:
+                self.fs._connect()
+
+        return b"".join(out)
+
+    def _upload_chunk(self, final=False):
+        self.buffer.seek(0)
+        self.fs.ftp.storbinary(
+            f"STOR {self.path}", self.buffer, blocksize=self.blocksize, rest=self.offset
+        )
+        return True
+
+
+def _mlsd2(ftp, path="."):
+    """
+    Fall back to using `dir` instead of `mlsd` if not supported.
+
+    This parses a Linux style `ls -l` response to `dir`, but the response may
+    be platform dependent.
+
+    Parameters
+    ----------
+    ftp: ftplib.FTP
+    path: str
+        Expects to be given path, but defaults to ".".
+    """
+    lines = []
+    minfo = []
+    ftp.dir(path, lines.append)
+    for line in lines:
+        split_line = line.split()
+        if len(split_line) < 9:
+            continue
+        this = (
+            split_line[-1],
+            {
+                "modify": " ".join(split_line[5:8]),
+                "unix.owner": split_line[2],
+                "unix.group": split_line[3],
+                "unix.mode": split_line[0],
+                "size": split_line[4],
+            },
+        )
+        if "d" == this[1]["unix.mode"][0]:
+            this[1]["type"] = "dir"
+        else:
+            this[1]["type"] = "file"
+        minfo.append(this)
+    return minfo

env-llmeval/lib/python3.10/site-packages/fsspec/implementations/http.py

@@ -0,0 +1,868 @@
+import asyncio
+import io
+import logging
+import re
+import weakref
+from copy import copy
+from urllib.parse import urlparse
+
+import aiohttp
+import yarl
+
+from fsspec.asyn import AbstractAsyncStreamedFile, AsyncFileSystem, sync, sync_wrapper
+from fsspec.callbacks import DEFAULT_CALLBACK
+from fsspec.exceptions import FSTimeoutError
+from fsspec.spec import AbstractBufferedFile
+from fsspec.utils import (
+    DEFAULT_BLOCK_SIZE,
+    glob_translate,
+    isfilelike,
+    nullcontext,
+    tokenize,
+)
+
+from ..caching import AllBytes
+
+# https://stackoverflow.com/a/15926317/3821154
+ex = re.compile(r"""<(a|A)\s+(?:[^>]*?\s+)?(href|HREF)=["'](?P<url>[^"']+)""")
+ex2 = re.compile(r"""(?P<url>http[s]?://[-a-zA-Z0-9@:%_+.~#?&/=]+)""")
+logger = logging.getLogger("fsspec.http")
+
+
+async def get_client(**kwargs):
+    return aiohttp.ClientSession(**kwargs)
+
+
+class HTTPFileSystem(AsyncFileSystem):
+    """
+    Simple File-System for fetching data via HTTP(S)
+
+    ``ls()`` is implemented by loading the parent page and doing a regex
+    match on the result. If simple_link=True, anything of the form
+    "http(s)://server.com/stuff?thing=other"; otherwise only links within
+    HTML href tags will be used.
+    """
+
+    sep = "/"
+
+    def __init__(
+        self,
+        simple_links=True,
+        block_size=None,
+        same_scheme=True,
+        size_policy=None,
+        cache_type="bytes",
+        cache_options=None,
+        asynchronous=False,
+        loop=None,
+        client_kwargs=None,
+        get_client=get_client,
+        encoded=False,
+        **storage_options,
+    ):
+        """
+        NB: if this is called async, you must await set_client
+
+        Parameters
+        ----------
+        block_size: int
+            Blocks to read bytes; if 0, will default to raw requests file-like
+            objects instead of HTTPFile instances
+        simple_links: bool
+            If True, will consider both HTML <a> tags and anything that looks
+            like a URL; if False, will consider only the former.
+        same_scheme: True
+            When doing ls/glob, if this is True, only consider paths that have
+            http/https matching the input URLs.
+        size_policy: this argument is deprecated
+        client_kwargs: dict
+            Passed to aiohttp.ClientSession, see
+            https://docs.aiohttp.org/en/stable/client_reference.html
+            For example, ``{'auth': aiohttp.BasicAuth('user', 'pass')}``
+        get_client: Callable[..., aiohttp.ClientSession]
+            A callable which takes keyword arguments and constructs
+            an aiohttp.ClientSession. It's state will be managed by
+            the HTTPFileSystem class.
+        storage_options: key-value
+            Any other parameters passed on to requests
+        cache_type, cache_options: defaults used in open
+        """
+        super().__init__(self, asynchronous=asynchronous, loop=loop, **storage_options)
+        self.block_size = block_size if block_size is not None else DEFAULT_BLOCK_SIZE
+        self.simple_links = simple_links
+        self.same_schema = same_scheme
+        self.cache_type = cache_type
+        self.cache_options = cache_options
+        self.client_kwargs = client_kwargs or {}
+        self.get_client = get_client
+        self.encoded = encoded
+        self.kwargs = storage_options
+        self._session = None
+
+        # Clean caching-related parameters from `storage_options`
+        # before propagating them as `request_options` through `self.kwargs`.
+        # TODO: Maybe rename `self.kwargs` to `self.request_options` to make
+        #       it clearer.
+        request_options = copy(storage_options)
+        self.use_listings_cache = request_options.pop("use_listings_cache", False)
+        request_options.pop("listings_expiry_time", None)
+        request_options.pop("max_paths", None)
+        request_options.pop("skip_instance_cache", None)
+        self.kwargs = request_options
+
+    @property
+    def fsid(self):
+        return "http"
+
+    def encode_url(self, url):
+        return yarl.URL(url, encoded=self.encoded)
+
+    @staticmethod
+    def close_session(loop, session):
+        if loop is not None and loop.is_running():
+            try:
+                sync(loop, session.close, timeout=0.1)
+                return
+            except (TimeoutError, FSTimeoutError, NotImplementedError):
+                pass
+        connector = getattr(session, "_connector", None)
+        if connector is not None:
+            # close after loop is dead
+            connector._close()
+
+    async def set_session(self):
+        if self._session is None:
+            self._session = await self.get_client(loop=self.loop, **self.client_kwargs)
+            if not self.asynchronous:
+                weakref.finalize(self, self.close_session, self.loop, self._session)
+        return self._session
+
+    @classmethod
+    def _strip_protocol(cls, path):
+        """For HTTP, we always want to keep the full URL"""
+        return path
+
+    @classmethod
+    def _parent(cls, path):
+        # override, since _strip_protocol is different for URLs
+        par = super()._parent(path)
+        if len(par) > 7:  # "http://..."
+            return par
+        return ""
+
+    async def _ls_real(self, url, detail=True, **kwargs):
+        # ignoring URL-encoded arguments
+        kw = self.kwargs.copy()
+        kw.update(kwargs)
+        logger.debug(url)
+        session = await self.set_session()
+        async with session.get(self.encode_url(url), **self.kwargs) as r:
+            self._raise_not_found_for_status(r, url)
+            text = await r.text()
+        if self.simple_links:
+            links = ex2.findall(text) + [u[2] for u in ex.findall(text)]
+        else:
+            links = [u[2] for u in ex.findall(text)]
+        out = set()
+        parts = urlparse(url)
+        for l in links:
+            if isinstance(l, tuple):
+                l = l[1]
+            if l.startswith("/") and len(l) > 1:
+                # absolute URL on this server
+                l = f"{parts.scheme}://{parts.netloc}{l}"
+            if l.startswith("http"):
+                if self.same_schema and l.startswith(url.rstrip("/") + "/"):
+                    out.add(l)
+                elif l.replace("https", "http").startswith(
+                    url.replace("https", "http").rstrip("/") + "/"
+                ):
+                    # allowed to cross http <-> https
+                    out.add(l)
+            else:
+                if l not in ["..", "../"]:
+                    # Ignore FTP-like "parent"
+                    out.add("/".join([url.rstrip("/"), l.lstrip("/")]))
+        if not out and url.endswith("/"):
+            out = await self._ls_real(url.rstrip("/"), detail=False)
+        if detail:
+            return [
+                {
+                    "name": u,
+                    "size": None,
+                    "type": "directory" if u.endswith("/") else "file",
+                }
+                for u in out
+            ]
+        else:
+            return sorted(out)
+
+    async def _ls(self, url, detail=True, **kwargs):
+        if self.use_listings_cache and url in self.dircache:
+            out = self.dircache[url]
+        else:
+            out = await self._ls_real(url, detail=detail, **kwargs)
+            self.dircache[url] = out
+        return out
+
+    ls = sync_wrapper(_ls)
+
+    def _raise_not_found_for_status(self, response, url):
+        """
+        Raises FileNotFoundError for 404s, otherwise uses raise_for_status.
+        """
+        if response.status == 404:
+            raise FileNotFoundError(url)
+        response.raise_for_status()
+
+    async def _cat_file(self, url, start=None, end=None, **kwargs):
+        kw = self.kwargs.copy()
+        kw.update(kwargs)
+        logger.debug(url)
+
+        if start is not None or end is not None:
+            if start == end:
+                return b""
+            headers = kw.pop("headers", {}).copy()
+
+            headers["Range"] = await self._process_limits(url, start, end)
+            kw["headers"] = headers
+        session = await self.set_session()
+        async with session.get(self.encode_url(url), **kw) as r:
+            out = await r.read()
+            self._raise_not_found_for_status(r, url)
+        return out
+
+    async def _get_file(
+        self, rpath, lpath, chunk_size=5 * 2**20, callback=DEFAULT_CALLBACK, **kwargs
+    ):
+        kw = self.kwargs.copy()
+        kw.update(kwargs)
+        logger.debug(rpath)
+        session = await self.set_session()
+        async with session.get(self.encode_url(rpath), **kw) as r:
+            try:
+                size = int(r.headers["content-length"])
+            except (ValueError, KeyError):
+                size = None
+
+            callback.set_size(size)
+            self._raise_not_found_for_status(r, rpath)
+            if isfilelike(lpath):
+                outfile = lpath
+            else:
+                outfile = open(lpath, "wb")  # noqa: ASYNC101
+
+            try:
+                chunk = True
+                while chunk:
+                    chunk = await r.content.read(chunk_size)
+                    outfile.write(chunk)
+                    callback.relative_update(len(chunk))
+            finally:
+                if not isfilelike(lpath):
+                    outfile.close()
+
+    async def _put_file(
+        self,
+        lpath,
+        rpath,
+        chunk_size=5 * 2**20,
+        callback=DEFAULT_CALLBACK,
+        method="post",
+        **kwargs,
+    ):
+        async def gen_chunks():
+            # Support passing arbitrary file-like objects
+            # and use them instead of streams.
+            if isinstance(lpath, io.IOBase):
+                context = nullcontext(lpath)
+                use_seek = False  # might not support seeking
+            else:
+                context = open(lpath, "rb")  # noqa: ASYNC101
+                use_seek = True
+
+            with context as f:
+                if use_seek:
+                    callback.set_size(f.seek(0, 2))
+                    f.seek(0)
+                else:
+                    callback.set_size(getattr(f, "size", None))
+
+                chunk = f.read(chunk_size)
+                while chunk:
+                    yield chunk
+                    callback.relative_update(len(chunk))
+                    chunk = f.read(chunk_size)
+
+        kw = self.kwargs.copy()
+        kw.update(kwargs)
+        session = await self.set_session()
+
+        method = method.lower()
+        if method not in ("post", "put"):
+            raise ValueError(
+                f"method has to be either 'post' or 'put', not: {method!r}"
+            )
+
+        meth = getattr(session, method)
+        async with meth(self.encode_url(rpath), data=gen_chunks(), **kw) as resp:
+            self._raise_not_found_for_status(resp, rpath)
+
+    async def _exists(self, path, **kwargs):
+        kw = self.kwargs.copy()
+        kw.update(kwargs)
+        try:
+            logger.debug(path)
+            session = await self.set_session()
+            r = await session.get(self.encode_url(path), **kw)
+            async with r:
+                return r.status < 400
+        except aiohttp.ClientError:
+            return False
+
+    async def _isfile(self, path, **kwargs):
+        return await self._exists(path, **kwargs)
+
+    def _open(
+        self,
+        path,
+        mode="rb",
+        block_size=None,
+        autocommit=None,  # XXX: This differs from the base class.
+        cache_type=None,
+        cache_options=None,
+        size=None,
+        **kwargs,
+    ):
+        """Make a file-like object
+
+        Parameters
+        ----------
+        path: str
+            Full URL with protocol
+        mode: string
+            must be "rb"
+        block_size: int or None
+            Bytes to download in one request; use instance value if None. If
+            zero, will return a streaming Requests file-like instance.
+        kwargs: key-value
+            Any other parameters, passed to requests calls
+        """
+        if mode != "rb":
+            raise NotImplementedError
+        block_size = block_size if block_size is not None else self.block_size
+        kw = self.kwargs.copy()
+        kw["asynchronous"] = self.asynchronous
+        kw.update(kwargs)
+        size = size or self.info(path, **kwargs)["size"]
+        session = sync(self.loop, self.set_session)
+        if block_size and size:
+            return HTTPFile(
+                self,
+                path,
+                session=session,
+                block_size=block_size,
+                mode=mode,
+                size=size,
+                cache_type=cache_type or self.cache_type,
+                cache_options=cache_options or self.cache_options,
+                loop=self.loop,
+                **kw,
+            )
+        else:
+            return HTTPStreamFile(
+                self,
+                path,
+                mode=mode,
+                loop=self.loop,
+                session=session,
+                **kw,
+            )
+
+    async def open_async(self, path, mode="rb", size=None, **kwargs):
+        session = await self.set_session()
+        if size is None:
+            try:
+                size = (await self._info(path, **kwargs))["size"]
+            except FileNotFoundError:
+                pass
+        return AsyncStreamFile(
+            self,
+            path,
+            loop=self.loop,
+            session=session,
+            size=size,
+            **kwargs,
+        )
+
+    def ukey(self, url):
+        """Unique identifier; assume HTTP files are static, unchanging"""
+        return tokenize(url, self.kwargs, self.protocol)
+
+    async def _info(self, url, **kwargs):
+        """Get info of URL
+
+        Tries to access location via HEAD, and then GET methods, but does
+        not fetch the data.
+
+        It is possible that the server does not supply any size information, in
+        which case size will be given as None (and certain operations on the
+        corresponding file will not work).
+        """
+        info = {}
+        session = await self.set_session()
+
+        for policy in ["head", "get"]:
+            try:
+                info.update(
+                    await _file_info(
+                        self.encode_url(url),
+                        size_policy=policy,
+                        session=session,
+                        **self.kwargs,
+                        **kwargs,
+                    )
+                )
+                if info.get("size") is not None:
+                    break
+            except Exception as exc:
+                if policy == "get":
+                    # If get failed, then raise a FileNotFoundError
+                    raise FileNotFoundError(url) from exc
+                logger.debug(str(exc))
+
+        return {"name": url, "size": None, **info, "type": "file"}
+
+    async def _glob(self, path, maxdepth=None, **kwargs):
+        """
+        Find files by glob-matching.
+
+        This implementation is idntical to the one in AbstractFileSystem,
+        but "?" is not considered as a character for globbing, because it is
+        so common in URLs, often identifying the "query" part.
+        """
+        if maxdepth is not None and maxdepth < 1:
+            raise ValueError("maxdepth must be at least 1")
+        import re
+
+        ends_with_slash = path.endswith("/")  # _strip_protocol strips trailing slash
+        path = self._strip_protocol(path)
+        append_slash_to_dirname = ends_with_slash or path.endswith("/**")
+        idx_star = path.find("*") if path.find("*") >= 0 else len(path)
+        idx_brace = path.find("[") if path.find("[") >= 0 else len(path)
+
+        min_idx = min(idx_star, idx_brace)
+
+        detail = kwargs.pop("detail", False)
+
+        if not has_magic(path):
+            if await self._exists(path, **kwargs):
+                if not detail:
+                    return [path]
+                else:
+                    return {path: await self._info(path, **kwargs)}
+            else:
+                if not detail:
+                    return []  # glob of non-existent returns empty
+                else:
+                    return {}
+        elif "/" in path[:min_idx]:
+            min_idx = path[:min_idx].rindex("/")
+            root = path[: min_idx + 1]
+            depth = path[min_idx + 1 :].count("/") + 1
+        else:
+            root = ""
+            depth = path[min_idx + 1 :].count("/") + 1
+
+        if "**" in path:
+            if maxdepth is not None:
+                idx_double_stars = path.find("**")
+                depth_double_stars = path[idx_double_stars:].count("/") + 1
+                depth = depth - depth_double_stars + maxdepth
+            else:
+                depth = None
+
+        allpaths = await self._find(
+            root, maxdepth=depth, withdirs=True, detail=True, **kwargs
+        )
+
+        pattern = glob_translate(path + ("/" if ends_with_slash else ""))
+        pattern = re.compile(pattern)
+
+        out = {
+            p: info
+            for p, info in sorted(allpaths.items())
+            if pattern.match(
+                (
+                    p + "/"
+                    if append_slash_to_dirname and info["type"] == "directory"
+                    else p
+                )
+            )
+        }
+
+        if detail:
+            return out
+        else:
+            return list(out)
+
+    async def _isdir(self, path):
+        # override, since all URLs are (also) files
+        try:
+            return bool(await self._ls(path))
+        except (FileNotFoundError, ValueError):
+            return False
+
+
+class HTTPFile(AbstractBufferedFile):
+    """
+    A file-like object pointing to a remove HTTP(S) resource
+
+    Supports only reading, with read-ahead of a predermined block-size.
+
+    In the case that the server does not supply the filesize, only reading of
+    the complete file in one go is supported.
+
+    Parameters
+    ----------
+    url: str
+        Full URL of the remote resource, including the protocol
+    session: aiohttp.ClientSession or None
+        All calls will be made within this session, to avoid restarting
+        connections where the server allows this
+    block_size: int or None
+        The amount of read-ahead to do, in bytes. Default is 5MB, or the value
+        configured for the FileSystem creating this file
+    size: None or int
+        If given, this is the size of the file in bytes, and we don't attempt
+        to call the server to find the value.
+    kwargs: all other key-values are passed to requests calls.
+    """
+
+    def __init__(
+        self,
+        fs,
+        url,
+        session=None,
+        block_size=None,
+        mode="rb",
+        cache_type="bytes",
+        cache_options=None,
+        size=None,
+        loop=None,
+        asynchronous=False,
+        **kwargs,
+    ):
+        if mode != "rb":
+            raise NotImplementedError("File mode not supported")
+        self.asynchronous = asynchronous
+        self.url = url
+        self.session = session
+        self.details = {"name": url, "size": size, "type": "file"}
+        super().__init__(
+            fs=fs,
+            path=url,
+            mode=mode,
+            block_size=block_size,
+            cache_type=cache_type,
+            cache_options=cache_options,
+            **kwargs,
+        )
+        self.loop = loop
+
+    def read(self, length=-1):
+        """Read bytes from file
+
+        Parameters
+        ----------
+        length: int
+            Read up to this many bytes. If negative, read all content to end of
+            file. If the server has not supplied the filesize, attempting to
+            read only part of the data will raise a ValueError.
+        """
+        if (
+            (length < 0 and self.loc == 0)  # explicit read all
+            # but not when the size is known and fits into a block anyways
+            and not (self.size is not None and self.size <= self.blocksize)
+        ):
+            self._fetch_all()
+        if self.size is None:
+            if length < 0:
+                self._fetch_all()
+        else:
+            length = min(self.size - self.loc, length)
+        return super().read(length)
+
+    async def async_fetch_all(self):
+        """Read whole file in one shot, without caching
+
+        This is only called when position is still at zero,
+        and read() is called without a byte-count.
+        """
+        logger.debug(f"Fetch all for {self}")
+        if not isinstance(self.cache, AllBytes):
+            r = await self.session.get(self.fs.encode_url(self.url), **self.kwargs)
+            async with r:
+                r.raise_for_status()
+                out = await r.read()
+                self.cache = AllBytes(
+                    size=len(out), fetcher=None, blocksize=None, data=out
+                )
+                self.size = len(out)
+
+    _fetch_all = sync_wrapper(async_fetch_all)
+
+    def _parse_content_range(self, headers):
+        """Parse the Content-Range header"""
+        s = headers.get("Content-Range", "")
+        m = re.match(r"bytes (\d+-\d+|\*)/(\d+|\*)", s)
+        if not m:
+            return None, None, None
+
+        if m[1] == "*":
+            start = end = None
+        else:
+            start, end = [int(x) for x in m[1].split("-")]
+        total = None if m[2] == "*" else int(m[2])
+        return start, end, total
+
+    async def async_fetch_range(self, start, end):
+        """Download a block of data
+
+        The expectation is that the server returns only the requested bytes,
+        with HTTP code 206. If this is not the case, we first check the headers,
+        and then stream the output - if the data size is bigger than we
+        requested, an exception is raised.
+        """
+        logger.debug(f"Fetch range for {self}: {start}-{end}")
+        kwargs = self.kwargs.copy()
+        headers = kwargs.pop("headers", {}).copy()
+        headers["Range"] = f"bytes={start}-{end - 1}"
+        logger.debug(f"{self.url} : {headers['Range']}")
+        r = await self.session.get(
+            self.fs.encode_url(self.url), headers=headers, **kwargs
+        )
+        async with r:
+            if r.status == 416:
+                # range request outside file
+                return b""
+            r.raise_for_status()
+
+            # If the server has handled the range request, it should reply
+            # with status 206 (partial content). But we'll guess that a suitable
+            # Content-Range header or a Content-Length no more than the
+            # requested range also mean we have got the desired range.
+            response_is_range = (
+                r.status == 206
+                or self._parse_content_range(r.headers)[0] == start
+                or int(r.headers.get("Content-Length", end + 1)) <= end - start
+            )
+
+            if response_is_range:
+                # partial content, as expected
+                out = await r.read()
+            elif start > 0:
+                raise ValueError(
+                    "The HTTP server doesn't appear to support range requests. "
+                    "Only reading this file from the beginning is supported. "
+                    "Open with block_size=0 for a streaming file interface."
+                )
+            else:
+                # Response is not a range, but we want the start of the file,
+                # so we can read the required amount anyway.
+                cl = 0
+                out = []
+                while True:
+                    chunk = await r.content.read(2**20)
+                    # data size unknown, let's read until we have enough
+                    if chunk:
+                        out.append(chunk)
+                        cl += len(chunk)
+                        if cl > end - start:
+                            break
+                    else:
+                        break
+                out = b"".join(out)[: end - start]
+            return out
+
+    _fetch_range = sync_wrapper(async_fetch_range)
+
+    def __reduce__(self):
+        return (
+            reopen,
+            (
+                self.fs,
+                self.url,
+                self.mode,
+                self.blocksize,
+                self.cache.name if self.cache else "none",
+                self.size,
+            ),
+        )
+
+
+def reopen(fs, url, mode, blocksize, cache_type, size=None):
+    return fs.open(
+        url, mode=mode, block_size=blocksize, cache_type=cache_type, size=size
+    )
+
+
+magic_check = re.compile("([*[])")
+
+
+def has_magic(s):
+    match = magic_check.search(s)
+    return match is not None
+
+
+class HTTPStreamFile(AbstractBufferedFile):
+    def __init__(self, fs, url, mode="rb", loop=None, session=None, **kwargs):
+        self.asynchronous = kwargs.pop("asynchronous", False)
+        self.url = url
+        self.loop = loop
+        self.session = session
+        if mode != "rb":
+            raise ValueError
+        self.details = {"name": url, "size": None}
+        super().__init__(fs=fs, path=url, mode=mode, cache_type="none", **kwargs)
+
+        async def cor():
+            r = await self.session.get(self.fs.encode_url(url), **kwargs).__aenter__()
+            self.fs._raise_not_found_for_status(r, url)
+            return r
+
+        self.r = sync(self.loop, cor)
+
+    def seek(self, loc, whence=0):
+        if loc == 0 and whence == 1:
+            return
+        if loc == self.loc and whence == 0:
+            return
+        raise ValueError("Cannot seek streaming HTTP file")
+
+    async def _read(self, num=-1):
+        out = await self.r.content.read(num)
+        self.loc += len(out)
+        return out
+
+    read = sync_wrapper(_read)
+
+    async def _close(self):
+        self.r.close()
+
+    def close(self):
+        asyncio.run_coroutine_threadsafe(self._close(), self.loop)
+        super().close()
+
+    def __reduce__(self):
+        return reopen, (self.fs, self.url, self.mode, self.blocksize, self.cache.name)
+
+
+class AsyncStreamFile(AbstractAsyncStreamedFile):
+    def __init__(
+        self, fs, url, mode="rb", loop=None, session=None, size=None, **kwargs
+    ):
+        self.url = url
+        self.session = session
+        self.r = None
+        if mode != "rb":
+            raise ValueError
+        self.details = {"name": url, "size": None}
+        self.kwargs = kwargs
+        super().__init__(fs=fs, path=url, mode=mode, cache_type="none")
+        self.size = size
+
+    async def read(self, num=-1):
+        if self.r is None:
+            r = await self.session.get(
+                self.fs.encode_url(self.url), **self.kwargs
+            ).__aenter__()
+            self.fs._raise_not_found_for_status(r, self.url)
+            self.r = r
+        out = await self.r.content.read(num)
+        self.loc += len(out)
+        return out
+
+    async def close(self):
+        if self.r is not None:
+            self.r.close()
+            self.r = None
+        await super().close()
+
+
+async def get_range(session, url, start, end, file=None, **kwargs):
+    # explicit get a range when we know it must be safe
+    kwargs = kwargs.copy()
+    headers = kwargs.pop("headers", {}).copy()
+    headers["Range"] = f"bytes={start}-{end - 1}"
+    r = await session.get(url, headers=headers, **kwargs)
+    r.raise_for_status()
+    async with r:
+        out = await r.read()
+    if file:
+        with open(file, "r+b") as f:  # noqa: ASYNC101
+            f.seek(start)
+            f.write(out)
+    else:
+        return out
+
+
+async def _file_info(url, session, size_policy="head", **kwargs):
+    """Call HEAD on the server to get details about the file (size/checksum etc.)
+
+    Default operation is to explicitly allow redirects and use encoding
+    'identity' (no compression) to get the true size of the target.
+    """
+    logger.debug("Retrieve file size for %s", url)
+    kwargs = kwargs.copy()
+    ar = kwargs.pop("allow_redirects", True)
+    head = kwargs.get("headers", {}).copy()
+    head["Accept-Encoding"] = "identity"
+    kwargs["headers"] = head
+
+    info = {}
+    if size_policy == "head":
+        r = await session.head(url, allow_redirects=ar, **kwargs)
+    elif size_policy == "get":
+        r = await session.get(url, allow_redirects=ar, **kwargs)
+    else:
+        raise TypeError(f'size_policy must be "head" or "get", got {size_policy}')
+    async with r:
+        r.raise_for_status()
+
+        # TODO:
+        #  recognise lack of 'Accept-Ranges',
+        #                 or 'Accept-Ranges': 'none' (not 'bytes')
+        #  to mean streaming only, no random access => return None
+        if "Content-Length" in r.headers:
+            # Some servers may choose to ignore Accept-Encoding and return
+            # compressed content, in which case the returned size is unreliable.
+            if "Content-Encoding" not in r.headers or r.headers["Content-Encoding"] in [
+                "identity",
+                "",
+            ]:
+                info["size"] = int(r.headers["Content-Length"])
+        elif "Content-Range" in r.headers:
+            info["size"] = int(r.headers["Content-Range"].split("/")[1])
+
+        if "Content-Type" in r.headers:
+            info["mimetype"] = r.headers["Content-Type"].partition(";")[0]
+
+        info["url"] = str(r.url)
+
+        for checksum_field in ["ETag", "Content-MD5", "Digest"]:
+            if r.headers.get(checksum_field):
+                info[checksum_field] = r.headers[checksum_field]
+
+    return info
+
+
+async def _file_size(url, session=None, *args, **kwargs):
+    if session is None:
+        session = await get_client()
+    info = await _file_info(url, session=session, *args, **kwargs)
+    return info.get("size")
+
+
+file_size = sync_wrapper(_file_size)

env-llmeval/lib/python3.10/site-packages/fsspec/implementations/jupyter.py

@@ -0,0 +1,124 @@
+import base64
+import io
+import re
+
+import requests
+
+import fsspec
+
+
+class JupyterFileSystem(fsspec.AbstractFileSystem):
+    """View of the files as seen by a Jupyter server (notebook or lab)"""
+
+    protocol = ("jupyter", "jlab")
+
+    def __init__(self, url, tok=None, **kwargs):
+        """
+
+        Parameters
+        ----------
+        url : str
+            Base URL of the server, like "http://127.0.0.1:8888". May include
+            token in the string, which is given by the process when starting up
+        tok : str
+            If the token is obtained separately, can be given here
+        kwargs
+        """
+        if "?" in url:
+            if tok is None:
+                try:
+                    tok = re.findall("token=([a-z0-9]+)", url)[0]
+                except IndexError as e:
+                    raise ValueError("Could not determine token") from e
+            url = url.split("?", 1)[0]
+        self.url = url.rstrip("/") + "/api/contents"
+        self.session = requests.Session()
+        if tok:
+            self.session.headers["Authorization"] = f"token {tok}"
+
+        super().__init__(**kwargs)
+
+    def ls(self, path, detail=True, **kwargs):
+        path = self._strip_protocol(path)
+        r = self.session.get(f"{self.url}/{path}")
+        if r.status_code == 404:
+            return FileNotFoundError(path)
+        r.raise_for_status()
+        out = r.json()
+
+        if out["type"] == "directory":
+            out = out["content"]
+        else:
+            out = [out]
+        for o in out:
+            o["name"] = o.pop("path")
+            o.pop("content")
+            if o["type"] == "notebook":
+                o["type"] = "file"
+        if detail:
+            return out
+        return [o["name"] for o in out]
+
+    def cat_file(self, path, start=None, end=None, **kwargs):
+        path = self._strip_protocol(path)
+        r = self.session.get(f"{self.url}/{path}")
+        if r.status_code == 404:
+            return FileNotFoundError(path)
+        r.raise_for_status()
+        out = r.json()
+        if out["format"] == "text":
+            # data should be binary
+            b = out["content"].encode()
+        else:
+            b = base64.b64decode(out["content"])
+        return b[start:end]
+
+    def pipe_file(self, path, value, **_):
+        path = self._strip_protocol(path)
+        json = {
+            "name": path.rsplit("/", 1)[-1],
+            "path": path,
+            "size": len(value),
+            "content": base64.b64encode(value).decode(),
+            "format": "base64",
+            "type": "file",
+        }
+        self.session.put(f"{self.url}/{path}", json=json)
+
+    def mkdir(self, path, create_parents=True, **kwargs):
+        path = self._strip_protocol(path)
+        if create_parents and "/" in path:
+            self.mkdir(path.rsplit("/", 1)[0], True)
+        json = {
+            "name": path.rsplit("/", 1)[-1],
+            "path": path,
+            "size": None,
+            "content": None,
+            "type": "directory",
+        }
+        self.session.put(f"{self.url}/{path}", json=json)
+
+    def _rm(self, path):
+        path = self._strip_protocol(path)
+        self.session.delete(f"{self.url}/{path}")
+
+    def _open(self, path, mode="rb", **kwargs):
+        path = self._strip_protocol(path)
+        if mode == "rb":
+            data = self.cat_file(path)
+            return io.BytesIO(data)
+        else:
+            return SimpleFileWriter(self, path, mode="wb")
+
+
+class SimpleFileWriter(fsspec.spec.AbstractBufferedFile):
+    def _upload_chunk(self, final=False):
+        """Never uploads a chunk until file is done
+
+        Not suitable for large files
+        """
+        if final is False:
+            return False
+        self.buffer.seek(0)
+        data = self.buffer.read()
+        self.fs.pipe_file(self.path, data)

env-llmeval/lib/python3.10/site-packages/fsspec/implementations/memory.py

@@ -0,0 +1,292 @@
+from __future__ import annotations
+
+import logging
+from datetime import datetime, timezone
+from errno import ENOTEMPTY
+from io import BytesIO
+from typing import Any, ClassVar
+
+from fsspec import AbstractFileSystem
+
+logger = logging.getLogger("fsspec.memoryfs")
+
+
+class MemoryFileSystem(AbstractFileSystem):
+    """A filesystem based on a dict of BytesIO objects
+
+    This is a global filesystem so instances of this class all point to the same
+    in memory filesystem.
+    """
+
+    store: ClassVar[dict[str, Any]] = {}  # global, do not overwrite!
+    pseudo_dirs = [""]  # global, do not overwrite!
+    protocol = "memory"
+    root_marker = "/"
+
+    @classmethod
+    def _strip_protocol(cls, path):
+        if path.startswith("memory://"):
+            path = path[len("memory://") :]
+        if "::" in path or "://" in path:
+            return path.rstrip("/")
+        path = path.lstrip("/").rstrip("/")
+        return "/" + path if path else ""
+
+    def ls(self, path, detail=True, **kwargs):
+        path = self._strip_protocol(path)
+        if path in self.store:
+            # there is a key with this exact name
+            if not detail:
+                return [path]
+            return [
+                {
+                    "name": path,
+                    "size": self.store[path].size,
+                    "type": "file",
+                    "created": self.store[path].created.timestamp(),
+                }
+            ]
+        paths = set()
+        starter = path + "/"
+        out = []
+        for p2 in tuple(self.store):
+            if p2.startswith(starter):
+                if "/" not in p2[len(starter) :]:
+                    # exact child
+                    out.append(
+                        {
+                            "name": p2,
+                            "size": self.store[p2].size,
+                            "type": "file",
+                            "created": self.store[p2].created.timestamp(),
+                        }
+                    )
+                elif len(p2) > len(starter):
+                    # implied child directory
+                    ppath = starter + p2[len(starter) :].split("/", 1)[0]
+                    if ppath not in paths:
+                        out = out or []
+                        out.append(
+                            {
+                                "name": ppath,
+                                "size": 0,
+                                "type": "directory",
+                            }
+                        )
+                        paths.add(ppath)
+        for p2 in self.pseudo_dirs:
+            if p2.startswith(starter):
+                if "/" not in p2[len(starter) :]:
+                    # exact child pdir
+                    if p2 not in paths:
+                        out.append({"name": p2, "size": 0, "type": "directory"})
+                        paths.add(p2)
+                else:
+                    # directory implied by deeper pdir
+                    ppath = starter + p2[len(starter) :].split("/", 1)[0]
+                    if ppath not in paths:
+                        out.append({"name": ppath, "size": 0, "type": "directory"})
+                        paths.add(ppath)
+        if not out:
+            if path in self.pseudo_dirs:
+                # empty dir
+                return []
+            raise FileNotFoundError(path)
+        if detail:
+            return out
+        return sorted([f["name"] for f in out])
+
+    def mkdir(self, path, create_parents=True, **kwargs):
+        path = self._strip_protocol(path)
+        if path in self.store or path in self.pseudo_dirs:
+            raise FileExistsError(path)
+        if self._parent(path).strip("/") and self.isfile(self._parent(path)):
+            raise NotADirectoryError(self._parent(path))
+        if create_parents and self._parent(path).strip("/"):
+            try:
+                self.mkdir(self._parent(path), create_parents, **kwargs)
+            except FileExistsError:
+                pass
+        if path and path not in self.pseudo_dirs:
+            self.pseudo_dirs.append(path)
+
+    def makedirs(self, path, exist_ok=False):
+        try:
+            self.mkdir(path, create_parents=True)
+        except FileExistsError:
+            if not exist_ok:
+                raise
+
+    def pipe_file(self, path, value, **kwargs):
+        """Set the bytes of given file
+
+        Avoids copies of the data if possible
+        """
+        self.open(path, "wb", data=value)
+
+    def rmdir(self, path):
+        path = self._strip_protocol(path)
+        if path == "":
+            # silently avoid deleting FS root
+            return
+        if path in self.pseudo_dirs:
+            if not self.ls(path):
+                self.pseudo_dirs.remove(path)
+            else:
+                raise OSError(ENOTEMPTY, "Directory not empty", path)
+        else:
+            raise FileNotFoundError(path)
+
+    def info(self, path, **kwargs):
+        path = self._strip_protocol(path)
+        if path in self.pseudo_dirs or any(
+            p.startswith(path + "/") for p in list(self.store) + self.pseudo_dirs
+        ):
+            return {
+                "name": path,
+                "size": 0,
+                "type": "directory",
+            }
+        elif path in self.store:
+            filelike = self.store[path]
+            return {
+                "name": path,
+                "size": filelike.size,
+                "type": "file",
+                "created": getattr(filelike, "created", None),
+            }
+        else:
+            raise FileNotFoundError(path)
+
+    def _open(
+        self,
+        path,
+        mode="rb",
+        block_size=None,
+        autocommit=True,
+        cache_options=None,
+        **kwargs,
+    ):
+        path = self._strip_protocol(path)
+        if path in self.pseudo_dirs:
+            raise IsADirectoryError(path)
+        parent = path
+        while len(parent) > 1:
+            parent = self._parent(parent)
+            if self.isfile(parent):
+                raise FileExistsError(parent)
+        if mode in ["rb", "ab", "r+b"]:
+            if path in self.store:
+                f = self.store[path]
+                if mode == "ab":
+                    # position at the end of file
+                    f.seek(0, 2)
+                else:
+                    # position at the beginning of file
+                    f.seek(0)
+                return f
+            else:
+                raise FileNotFoundError(path)
+        elif mode == "wb":
+            m = MemoryFile(self, path, kwargs.get("data"))
+            if not self._intrans:
+                m.commit()
+            return m
+        else:
+            name = self.__class__.__name__
+            raise ValueError(f"unsupported file mode for {name}: {mode!r}")
+
+    def cp_file(self, path1, path2, **kwargs):
+        path1 = self._strip_protocol(path1)
+        path2 = self._strip_protocol(path2)
+        if self.isfile(path1):
+            self.store[path2] = MemoryFile(
+                self, path2, self.store[path1].getvalue()
+            )  # implicit copy
+        elif self.isdir(path1):
+            if path2 not in self.pseudo_dirs:
+                self.pseudo_dirs.append(path2)
+        else:
+            raise FileNotFoundError(path1)
+
+    def cat_file(self, path, start=None, end=None, **kwargs):
+        path = self._strip_protocol(path)
+        try:
+            return bytes(self.store[path].getbuffer()[start:end])
+        except KeyError:
+            raise FileNotFoundError(path)
+
+    def _rm(self, path):
+        path = self._strip_protocol(path)
+        try:
+            del self.store[path]
+        except KeyError as e:
+            raise FileNotFoundError(path) from e
+
+    def modified(self, path):
+        path = self._strip_protocol(path)
+        try:
+            return self.store[path].modified
+        except KeyError:
+            raise FileNotFoundError(path)
+
+    def created(self, path):
+        path = self._strip_protocol(path)
+        try:
+            return self.store[path].created
+        except KeyError:
+            raise FileNotFoundError(path)
+
+    def rm(self, path, recursive=False, maxdepth=None):
+        if isinstance(path, str):
+            path = self._strip_protocol(path)
+        else:
+            path = [self._strip_protocol(p) for p in path]
+        paths = self.expand_path(path, recursive=recursive, maxdepth=maxdepth)
+        for p in reversed(paths):
+            # If the expanded path doesn't exist, it is only because the expanded
+            # path was a directory that does not exist in self.pseudo_dirs. This
+            # is possible if you directly create files without making the
+            # directories first.
+            if not self.exists(p):
+                continue
+            if self.isfile(p):
+                self.rm_file(p)
+            else:
+                self.rmdir(p)
+
+
+class MemoryFile(BytesIO):
+    """A BytesIO which can't close and works as a context manager
+
+    Can initialise with data. Each path should only be active once at any moment.
+
+    No need to provide fs, path if auto-committing (default)
+    """
+
+    def __init__(self, fs=None, path=None, data=None):
+        logger.debug("open file %s", path)
+        self.fs = fs
+        self.path = path
+        self.created = datetime.now(tz=timezone.utc)
+        self.modified = datetime.now(tz=timezone.utc)
+        if data:
+            super().__init__(data)
+            self.seek(0)
+
+    @property
+    def size(self):
+        return self.getbuffer().nbytes
+
+    def __enter__(self):
+        return self
+
+    def close(self):
+        pass
+
+    def discard(self):
+        pass
+
+    def commit(self):
+        self.fs.store[self.path] = self
+        self.modified = datetime.now(tz=timezone.utc)