79472b77ca
This is part of ongoing work to make core platform-independent.
BREAKING CHANGE
All private exports from 'angular2/src/core/facade/{lang,collection,exception_handler}' should be replaced with 'angular2/src/facade/{lang,collection,exception_handler}'.
40 lines
1.6 KiB
TypeScript
40 lines
1.6 KiB
TypeScript
// Some of the code comes from WebComponents.JS
|
|
// https://github.com/webcomponents/webcomponentsjs/blob/master/src/HTMLImports/path.js
|
|
|
|
import {RegExp, RegExpWrapper, StringWrapper, isPresent, isBlank} from 'angular2/src/facade/lang';
|
|
import {UrlResolver} from 'angular2/src/compiler/url_resolver';
|
|
|
|
export class StyleWithImports {
|
|
constructor(public style: string, public styleUrls: string[]) {}
|
|
}
|
|
|
|
export function isStyleUrlResolvable(url: string): boolean {
|
|
if (isBlank(url) || url.length === 0 || url[0] == '/') return false;
|
|
var schemeMatch = RegExpWrapper.firstMatch(_urlWithSchemaRe, url);
|
|
return isBlank(schemeMatch) || schemeMatch[1] == 'package' || schemeMatch[1] == 'asset';
|
|
}
|
|
|
|
/**
|
|
* Rewrites stylesheets by resolving and removing the @import urls that
|
|
* are either relative or don't have a `package:` scheme
|
|
*/
|
|
export function extractStyleUrls(resolver: UrlResolver, baseUrl: string,
|
|
cssText: string): StyleWithImports {
|
|
var foundUrls = [];
|
|
var modifiedCssText = StringWrapper.replaceAllMapped(cssText, _cssImportRe, (m) => {
|
|
var url = 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);
|
|
}
|
|
|
|
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;
|