angular2
Version:
Angular 2 - a web framework for modern web apps
41 lines • 6.42 kB
JavaScript
;// Some of the code comes from WebComponents.JS
// https://github.com/webcomponents/webcomponentsjs/blob/master/src/HTMLImports/path.js
var lang_1 = require('angular2/src/facade/lang');
var StyleWithImports = (function () {
function StyleWithImports(style, styleUrls) {
this.style = style;
this.styleUrls = styleUrls;
}
return StyleWithImports;
})();
exports.StyleWithImports = StyleWithImports;
function isStyleUrlResolvable(url) {
if (lang_1.isBlank(url) || url.length === 0 || url[0] == '/')
return false;
var schemeMatch = lang_1.RegExpWrapper.firstMatch(_urlWithSchemaRe, url);
return lang_1.isBlank(schemeMatch) || schemeMatch[1] == 'package' || schemeMatch[1] == 'asset';
}
exports.isStyleUrlResolvable = isStyleUrlResolvable;
/**
* Rewrites stylesheets by resolving and removing the @import urls that
* are either relative or don't have a `package:` scheme
*/
function extractStyleUrls(resolver, baseUrl, cssText) {
var foundUrls = [];
var modifiedCssText = lang_1.StringWrapper.replaceAllMapped(cssText, _cssImportRe, function (m) {
var url = lang_1.isPresent(m[1]) ? m[1] : m[2];
if (!isStyleUrlResolvable(url)) {
// Do not attempt to resolve non-package absolute URLs with URI scheme
return m[0];
}
foundUrls.push(resolver.resolve(baseUrl, url));
return '';
});
return new StyleWithImports(modifiedCssText, foundUrls);
}
exports.extractStyleUrls = extractStyleUrls;
var _cssImportRe = /@import\s+(?:url\()?\s*(?:(?:['"]([^'"]*))|([^;\)\s]*))[^;]*;?/g;
// TODO: can't use /^[^:/?#.]+:/g due to clang-format bug:
// https://github.com/angular/angular/issues/4596
var _urlWithSchemaRe = /^([a-zA-Z\-\+\.]+):/g;
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