113 lines
3.1 KiB
JavaScript
113 lines
3.1 KiB
JavaScript
// This implementation of the url resolver adds awareness for webpack loaders
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/*
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Modified from the stylus implementation:
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(The MIT License)
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Copyright (c) 2010–2014 LearnBoost <dev@learnboost.com>
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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'Software'), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*jshint laxcomma:true */
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var Stylus = require('stylus')
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, Compiler = Stylus.Compiler
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, nodes = Stylus.nodes
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, utils = Stylus.utils
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, parse = require('url').parse
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, relative = require('path').relative
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, dirname = require('path').dirname
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, extname = require('path').extname
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, sep = require('path').sep;
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/**
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* Return a url() function with the given `options`.
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*
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* Options:
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*
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* - `paths` resolution path(s), merged with general lookup paths
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*
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* Examples:
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*
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* stylus(str)
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* .set('filename', __dirname + '/css/test.styl')
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* .define('url', stylus.resolver({ paths: [__dirname + '/public'] }))
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* .render(function(err, css){ ... })
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*
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* @param {Object} options
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* @return {Function}
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* @api public
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*/
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module.exports = function(options) {
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options = options || {};
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var _paths = options.paths || [];
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function url(url) {
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var paths = _paths.concat(this.paths),
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filename = this.filename;
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// Compile the url
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var compiler = new Compiler(url);
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compiler.isURL = true;
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url = url.nodes.map(function(node){
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return compiler.visit(node);
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}).join('');
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function resolveComponent(url) {
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if (!url) {
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return url;
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}
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url = parse(url);
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if (url.protocol) {
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return url.href;
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}
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// Lookup
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var found = utils.lookup(url.pathname, paths, '', true);
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if (!found) {
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return url.href;
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}
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var tail = '';
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if (url.search) {
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tail += url.search;
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}
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if (url.hash) {
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tail += url.hash;
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}
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var res = relative(dirname(filename), found) + tail;
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if ('\\' == sep) res = res.replace(/\\/g, '/');
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return res;
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}
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var components = url.split(/!/g);
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components = components.map(resolveComponent);
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return new nodes.Literal('url("' + components.join('!') + '")');
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}
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url.raw = true;
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return url;
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};
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