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#!/usr/bin/env ruby
# The "advanced" way to "sync"
# sync with your own fork of the loda-programs repo.
#
# Purpose
# Intended for LODA developers and people that edit LODA programs.
#
# If you are editing LODA programs yourself, and have your own fork of the "loda-programs" repo.
# This script never destroy any local modifications to "loda-programs".
# It commits your own changes, then merges, then pushes the changes to your own fork at github/bitbucket.
#
# The drawback is that it requires several steps of setting up.
# 1. Create a github/bitbucket account.
# 2. Create your own fork of [loda-programs](https://github.com/loda-lang/loda-programs)
# 3. Checkout your repository on your computer.
# 4. In your repository. Add a remote named `official_loda-programs` that tracks the [loda-programs](https://github.com/loda-lang/loda-programs) repository.
#
# The benefit of this approach is that it makes troubleshooting easier.
# being able to see diffs, history of all the programs, reason about what is going on.
require_relative 'config'
LODA_PROGRAMS_OEIS = Config.instance.loda_programs_oeis
REMOTE_NAME = "official_loda-programs"
def git_fetch
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git fetch #{REMOTE_NAME}"
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
# Usage
# found = git_branch_contains("0007b13acb45e91185219114f7e43ecd7ce1a528")
def git_branch_contains(commit_id)
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git branch --contains #{commit_id}"
output = `#{command}`
output.strip!
if output.length == 0
return false
end
if output =~ /\bmain\b/
return true
end
puts "output from command: #{command}"
puts output
raise "Expected either no output, or an output containing 'main'"
end
raise "could not chdir"
end
def git_latest_commit_id_of_remote_repo
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git ls-remote #{REMOTE_NAME} HEAD"
output = `#{command}`
output.strip!
# extract from the string "7a68a9faec4f0dd7c31a70676dcac3fcb942ed75 HEAD"
# this commit_id "7a68a9faec4f0dd7c31a70676dcac3fcb942ed75"
if output =~ /\b([0-9a-fA-F]{14,})\b/
return $1
end
puts "error: no commit_id found in command output"
puts "output from command: #{command}"
puts output
raise "no commit_id found in command output"
end
raise "could not chdir"
end
def determine_if_latest_commit_is_present_in_local_repo
commit_id = git_latest_commit_id_of_remote_repo
puts "remote repo latest commit_id: #{commit_id}"
is_present_in_local_repo = git_branch_contains(commit_id)
puts "is_present_in_local_repo: #{is_present_in_local_repo}"
is_present_in_local_repo
end
def git_add
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git add ."
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def determine_has_uncommited_changes
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git status --porcelain"
output = `#{command}`
output.strip!
if output.length == 0
# no output when there isn't anything changed
return false
end
# outputs 1 or more lines with the files that have been changed
return true
end
raise "could not chdir"
end
def git_commit
if !determine_has_uncommited_changes
puts "Nothing to commit"
return
end
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git commit -m \"Updated programs\""
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def git_merge
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git merge --strategy-option theirs --no-edit remotes/#{REMOTE_NAME}/main"
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def git_push
Dir.chdir(LODA_PROGRAMS_OEIS) do
command = "git push"
output = `#{command}`
output.strip!
if output.length > 0
puts "output from command: #{command}"
puts output
end
end
end
def main
git_fetch
is_uptodate = determine_if_latest_commit_is_present_in_local_repo
if is_uptodate
puts "Already up to date. No changes to the official loda-programs repo."
puts "status: nochange"
return
end
puts "Obtaining the latest snapshot of the official loda-programs repo."
git_add
git_commit
git_merge
git_push
puts "The local repo is now uptodate."
puts "status: changed"
end
main
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