File size: 1,316 Bytes
bee6636 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 |
import { URLMeta, rewriteUrl, unrewriteUrl } from "./url";
export function rewriteCss(css: string, meta: URLMeta) {
return handleCss("rewrite", css, meta);
}
export function unrewriteCss(css: string) {
return handleCss("unrewrite", css);
}
function handleCss(type: "rewrite" | "unrewrite", css: string, meta?: URLMeta) {
// regex from vk6 (https://github.com/ading2210)
const urlRegex = /url\(['"]?(.+?)['"]?\)/gm;
const Atruleregex =
/@import\s+(url\s*?\(.{0,9999}?\)|['"].{0,9999}?['"]|.{0,9999}?)($|\s|;)/gm;
css = new String(css).toString();
css = css.replace(urlRegex, (match, url) => {
const encodedUrl =
type === "rewrite"
? rewriteUrl(url.trim(), meta)
: unrewriteUrl(url.trim());
return match.replace(url, encodedUrl);
});
css = css.replace(Atruleregex, (match, importStatement) => {
return match.replace(
importStatement,
importStatement.replace(
/^(url\(['"]?|['"]|)(.+?)(['"]|['"]?\)|)$/gm,
(match, firstQuote, url, endQuote) => {
if (firstQuote.startsWith("url")) {
return match;
}
const encodedUrl =
type === "rewrite"
? rewriteUrl(url.trim(), meta)
: unrewriteUrl(url.trim());
return `${firstQuote}${encodedUrl}${endQuote}`;
}
)
);
});
return css;
}
|