108 lines
2.4 KiB
JavaScript
108 lines
2.4 KiB
JavaScript
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var path = require('path');
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var url = require('url');
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var reduceUrls = require('./reduce');
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var isWindows = process.platform == 'win32';
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function isAbsolute(uri) {
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return uri[0] == '/';
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}
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function isSVGMarker(uri) {
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return uri[0] == '#';
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}
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function isEscaped(uri) {
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return uri.indexOf('__ESCAPED_URL_CLEAN_CSS__') === 0;
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}
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function isInternal(uri) {
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return /^\w+:\w+/.test(uri);
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}
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function isRemote(uri) {
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return /^[^:]+?:\/\//.test(uri) || uri.indexOf('//') === 0;
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}
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function isSameOrigin(uri1, uri2) {
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return url.parse(uri1).protocol == url.parse(uri2).protocol &&
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url.parse(uri1).host == url.parse(uri2).host;
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}
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function isImport(uri) {
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return uri.lastIndexOf('.css') === uri.length - 4;
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}
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function isData(uri) {
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return uri.indexOf('data:') === 0;
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}
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function absolute(uri, options) {
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return path
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.resolve(path.join(options.fromBase || '', uri))
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.replace(options.toBase, '');
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}
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function relative(uri, options) {
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return path.relative(options.toBase, path.join(options.fromBase || '', uri));
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}
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function normalize(uri) {
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return isWindows ? uri.replace(/\\/g, '/') : uri;
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}
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function rebase(uri, options) {
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if (isAbsolute(uri) || isSVGMarker(uri) || isEscaped(uri) || isInternal(uri))
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return uri;
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if (options.rebase === false && !isImport(uri))
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return uri;
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if (!options.imports && isImport(uri))
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return uri;
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if (isData(uri))
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return '\'' + uri + '\'';
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if (isRemote(uri) && !isRemote(options.toBase))
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return uri;
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if (isRemote(uri) && !isSameOrigin(uri, options.toBase))
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return uri;
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if (!isRemote(uri) && isRemote(options.toBase))
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return url.resolve(options.toBase, uri);
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return options.absolute ?
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normalize(absolute(uri, options)) :
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normalize(relative(uri, options));
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}
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function quoteFor(url) {
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if (url.indexOf('\'') > -1)
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return '"';
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else if (url.indexOf('"') > -1)
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return '\'';
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else if (/\s/.test(url) || /[\(\)]/.test(url))
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return '\'';
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else
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return '';
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}
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function rewriteUrls(data, options, context) {
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return reduceUrls(data, context, function (originUrl, tempData) {
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var url = originUrl.replace(/^(url\()?\s*['"]?|['"]?\s*\)?$/g, '');
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var match = originUrl.match(/^(url\()?\s*(['"]).*?(['"])\s*\)?$/);
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var quote;
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if (!!options.urlQuotes && match && match[2] === match[3]) {
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quote = match[2];
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} else {
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quote = quoteFor(url);
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}
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tempData.push('url(' + quote + rebase(url, options) + quote + ')');
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});
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}
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module.exports = rewriteUrls;
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