82 lines
2.7 KiB
Dart
82 lines
2.7 KiB
Dart
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import 'dart:async';
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import 'package:angel_framework/angel_framework.dart';
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import 'package:angel_static/angel_static.dart';
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import 'package:dart2_constant/convert.dart';
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import 'package:file/file.dart';
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import 'package:html/dom.dart' as html;
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import 'package:html/parser.dart' as html;
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import 'package:path/path.dart' as p;
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VirtualDirectory inlineAssets(VirtualDirectory vDir) => new _InlineAssets(vDir);
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class _InlineAssets extends VirtualDirectory {
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final VirtualDirectory inner;
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_InlineAssets(this.inner)
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: super(inner.app, inner.fileSystem,
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source: inner.source,
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indexFileNames: inner.indexFileNames,
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publicPath: inner.publicPath,
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callback: inner.callback,
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allowDirectoryListing: inner.allowDirectoryListing);
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@override
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Future<bool> serveFile(
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File file, FileStat stat, RequestContext req, ResponseContext res) async {
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if (p.extension(file.path) == '.html') {
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var contents = await file.readAsString();
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var doc = html.parse(contents, sourceUrl: file.uri.toString());
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var linksWithRel = doc.head
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?.getElementsByTagName('link')
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?.where((link) => link.attributes['rel'] == 'stylesheet') ??
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<html.Element>[];
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for (var link in linksWithRel) {
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if (link.attributes.containsKey('data-no-inline')) {
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link.attributes.remove('data-no-inline');
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} else {
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var uri = Uri.parse(link.attributes['href']);
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if (uri.scheme.isEmpty) {
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var styleFile = inner.source.childFile(uri.path);
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if (await styleFile.exists()) {
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var style = new html.Element.tag('style')
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..innerHtml = await styleFile.readAsString();
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link.replaceWith(style);
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}
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}
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}
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}
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var scripts = doc
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.getElementsByTagName('script')
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.where((script) => script.attributes.containsKey('src'));
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for (var script in scripts) {
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if (script.attributes.containsKey('data-no-inline')) {
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script.attributes.remove('data-no-inline');
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} else {
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var uri = Uri.parse(script.attributes['src']);
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if (uri.scheme.isEmpty) {
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var scriptFile = inner.source.childFile(uri.path);
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if (await scriptFile.exists()) {
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script.attributes.remove('src');
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script.innerHtml = await scriptFile.readAsString();
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}
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}
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}
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}
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res
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..headers['content-type'] = 'text/html; charset=utf8'
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..buffer.add(utf8.encode(doc.outerHtml));
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return false;
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} else {
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return await inner.serveFile(file, stat, req, res);
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}
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}
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}
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