119 lines
2.6 KiB
JavaScript
119 lines
2.6 KiB
JavaScript
var path = require('path');
|
|
var url = require('url');
|
|
|
|
var DOUBLE_QUOTE = '"';
|
|
var SINGLE_QUOTE = '\'';
|
|
var URL_PREFIX = 'url(';
|
|
var URL_SUFFIX = ')';
|
|
|
|
var QUOTE_PREFIX_PATTERN = /^["']/;
|
|
var QUOTE_SUFFIX_PATTERN = /["']$/;
|
|
var ROUND_BRACKETS_PATTERN = /[\(\)]/;
|
|
var URL_PREFIX_PATTERN = /^url\(/i;
|
|
var URL_SUFFIX_PATTERN = /\)$/;
|
|
var WHITESPACE_PATTERN = /\s/;
|
|
|
|
var isWindows = process.platform == 'win32';
|
|
|
|
function rebase(uri, rebaseConfig) {
|
|
if (!rebaseConfig) {
|
|
return uri;
|
|
}
|
|
|
|
if (isAbsolute(uri) && !isRemote(rebaseConfig.toBase)) {
|
|
return uri;
|
|
}
|
|
|
|
if (isRemote(uri) || isSVGMarker(uri) || isInternal(uri)) {
|
|
return uri;
|
|
}
|
|
|
|
if (isData(uri)) {
|
|
return '\'' + uri + '\'';
|
|
}
|
|
|
|
if (isRemote(rebaseConfig.toBase)) {
|
|
return url.resolve(rebaseConfig.toBase, uri);
|
|
}
|
|
|
|
return rebaseConfig.absolute ?
|
|
normalize(absolute(uri, rebaseConfig)) :
|
|
normalize(relative(uri, rebaseConfig));
|
|
}
|
|
|
|
function isAbsolute(uri) {
|
|
return path.isAbsolute(uri);
|
|
}
|
|
|
|
function isSVGMarker(uri) {
|
|
return uri[0] == '#';
|
|
}
|
|
|
|
function isInternal(uri) {
|
|
return /^\w+:\w+/.test(uri);
|
|
}
|
|
|
|
function isRemote(uri) {
|
|
return /^[^:]+?:\/\//.test(uri) || uri.indexOf('//') === 0;
|
|
}
|
|
|
|
function isData(uri) {
|
|
return uri.indexOf('data:') === 0;
|
|
}
|
|
|
|
function absolute(uri, rebaseConfig) {
|
|
return path
|
|
.resolve(path.join(rebaseConfig.fromBase || '', uri))
|
|
.replace(rebaseConfig.toBase, '');
|
|
}
|
|
|
|
function relative(uri, rebaseConfig) {
|
|
return path.relative(rebaseConfig.toBase, path.join(rebaseConfig.fromBase || '', uri));
|
|
}
|
|
|
|
function normalize(uri) {
|
|
return isWindows ? uri.replace(/\\/g, '/') : uri;
|
|
}
|
|
|
|
function quoteFor(unquotedUrl) {
|
|
if (unquotedUrl.indexOf(SINGLE_QUOTE) > -1) {
|
|
return DOUBLE_QUOTE;
|
|
} else if (unquotedUrl.indexOf(DOUBLE_QUOTE) > -1) {
|
|
return SINGLE_QUOTE;
|
|
} else if (hasWhitespace(unquotedUrl) || hasRoundBrackets(unquotedUrl)) {
|
|
return SINGLE_QUOTE;
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
function hasWhitespace(url) {
|
|
return WHITESPACE_PATTERN.test(url);
|
|
}
|
|
|
|
function hasRoundBrackets(url) {
|
|
return ROUND_BRACKETS_PATTERN.test(url);
|
|
}
|
|
|
|
function rewriteUrl(originalUrl, rebaseConfig, pathOnly) {
|
|
var strippedUrl = originalUrl
|
|
.replace(URL_PREFIX_PATTERN, '')
|
|
.replace(URL_SUFFIX_PATTERN, '')
|
|
.trim();
|
|
|
|
var unquotedUrl = strippedUrl
|
|
.replace(QUOTE_PREFIX_PATTERN, '')
|
|
.replace(QUOTE_SUFFIX_PATTERN, '')
|
|
.trim();
|
|
|
|
var quote = strippedUrl[0] == SINGLE_QUOTE || strippedUrl[0] == DOUBLE_QUOTE ?
|
|
strippedUrl[0] :
|
|
quoteFor(unquotedUrl);
|
|
|
|
return pathOnly ?
|
|
rebase(unquotedUrl, rebaseConfig) :
|
|
URL_PREFIX + quote + rebase(unquotedUrl, rebaseConfig) + quote + URL_SUFFIX;
|
|
}
|
|
|
|
module.exports = rewriteUrl;
|