Roll Observatory packages and add a roll script

polymer/lib/src/build/html_finalizer.dart

Index: polymer/lib/src/build/html_finalizer.dart
diff --git a/polymer/lib/src/build/html_finalizer.dart b/polymer/lib/src/build/html_finalizer.dart
deleted file mode 100644
index d476894b07cc78c583a89397804bb2d7e5b67b18..0000000000000000000000000000000000000000
--- a/polymer/lib/src/build/html_finalizer.dart
+++ /dev/null
@@ -1,333 +0,0 @@
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/// Transfomer that finalizes an html file for deployment:
-///   - Extracts inline js scripts in csp mode.
-///   - Inlines css files into the document.
-///   - Validates polymer-element templates.
-library polymer.src.build.html_finalizer;
-
-import 'dart:async';
-import 'dart:collection' show LinkedHashSet;
-
-import 'package:barback/barback.dart';
-import 'package:code_transformers/assets.dart';
-import 'package:code_transformers/messages/build_logger.dart';
-import 'package:path/path.dart' as path;
-import 'package:html/dom.dart'
-    show Document, DocumentFragment, Element, Node;
-import 'package:html/dom_parsing.dart' show TreeVisitor;
-import 'package:source_span/source_span.dart';
-
-import 'common.dart';
-import 'messages.dart';
-
-/// Inlines css files and extracts inline js scripts into files if in csp mode.
-// TODO(jakemac): Move to a different package. Will need to break out the
-// binding-specific logic when this happens (add it to the linter?).
-class _HtmlFinalizer extends PolymerTransformer {
-  final TransformOptions options;
-  final Transform transform;
-  final BuildLogger logger;
-  final AssetId docId;
-  final seen = new Set<AssetId>();
-  final scriptIds = new LinkedHashSet<AssetId>();
-  final inlinedStylesheetIds = new Set<AssetId>();
-  final extractedFiles = new Set<AssetId>();
-
-  /// The number of extracted inline Dart scripts. Used as a counter to give
-  /// unique-ish filenames.
-  int inlineScriptCounter = 0;
-
-  _HtmlFinalizer(TransformOptions options, Transform transform)
-      : options = options,
-        transform = transform,
-        logger = new BuildLogger(transform,
-            convertErrorsToWarnings: !options.releaseMode,
-            detailsUri: 'http://goo.gl/5HPeuP'),
-        docId = transform.primaryInput.id;
-
-  Future apply() {
-    seen.add(docId);
-
-    Document document;
-    bool changed = false;
-
-    return readPrimaryAsHtml(transform, logger).then((doc) {
-      document = doc;
-      new _UrlAttributeValidator(docId, logger).visit(document);
-
-      changed = _extractScripts(document) || changed;
-
-      return _inlineCss(document);
-    }).then((cssInlined) {
-      changed = changed || cssInlined;
-
-      var output = transform.primaryInput;
-      if (changed) output = new Asset.fromString(docId, document.outerHtml);
-      transform.addOutput(output);
-
-      // Write out the logs collected by our [BuildLogger].
-      if (options.injectBuildLogsInOutput) {
-        return logger.writeOutput();
-      }
-    });
-  }
-
-  /// Inlines any css files found into document. Returns a [bool] indicating
-  /// whether or not the document was modified.
-  Future<bool> _inlineCss(Document document) {
-    bool changed = false;
-
-    // Note: we need to preserve the import order in the generated output.
-    var tags = document.querySelectorAll('link[rel="stylesheet"]');
-    return Future.forEach(tags, (Element tag) {
-      var href = tag.attributes['href'];
-      var id = uriToAssetId(docId, href, logger, tag.sourceSpan,
-          errorOnAbsolute: false);
-      if (id == null) return null;
-      if (!options.shouldInlineStylesheet(id)) return null;
-
-      changed = true;
-      if (inlinedStylesheetIds.contains(id) &&
-          !options.stylesheetInliningIsOverridden(id)) {
-        logger.warning(CSS_FILE_INLINED_MULTIPLE_TIMES.create({'url': id.path}),
-            span: tag.sourceSpan);
-      }
-      inlinedStylesheetIds.add(id);
-      return _inlineStylesheet(id, tag);
-    }).then((_) => changed);
-  }
-
-  /// Inlines a single css file by replacing [link] with an inline style tag.
-  Future _inlineStylesheet(AssetId id, Element link) {
-    return transform.readInputAsString(id).catchError((error) {
-      // TODO(jakemac): Move this warning to the linter once we can make it run
-      // always (see http://dartbug.com/17199). Then hide this error and replace
-      // with a comment pointing to the linter error (so we don't double warn).
-      logger.warning(INLINE_STYLE_FAIL.create({'error': error}),
-          span: link.sourceSpan);
-    }).then((css) {
-      if (css == null) return null;
-      css = new _UrlNormalizer(transform, id, logger).visitCss(css);
-      var styleElement = new Element.tag('style')..text = css;
-      // Copy over the extra attributes from the link tag to the style tag.
-      // This adds support for no-shim, shim-shadowdom, etc.
-      link.attributes.forEach((key, value) {
-        if (!IGNORED_LINKED_STYLE_ATTRS.contains(key)) {
-          styleElement.attributes[key] = value;
-        }
-      });
-      link.replaceWith(styleElement);
-    });
-  }
-
-  /// Splits inline js scripts into their own files in csp mode.
-  bool _extractScripts(Document doc) {
-    if (!options.contentSecurityPolicy) return false;
-
-    bool changed = false;
-    for (var script in doc.querySelectorAll('script')) {
-      var src = script.attributes['src'];
-      if (src != null) continue;
-
-      var type = script.attributes['type'];
-      if (type == TYPE_DART) continue;
-
-      var extension = 'js';
-      final filename = path.url.basename(docId.path);
-      final count = inlineScriptCounter++;
-      var code = script.text;
-      // TODO(sigmund): ensure this path is unique (dartbug.com/12618).
-      script.attributes['src'] = src = '$filename.$count.$extension';
-      script.text = '';
-      changed = true;
-
-      var newId = docId.addExtension('.$count.$extension');
-      extractedFiles.add(newId);
-      transform.addOutput(new Asset.fromString(newId, code));
-    }
-    return changed;
-  }
-}
-
-/// Finalizes a single html document for deployment.
-class HtmlFinalizer extends Transformer {
-  final TransformOptions options;
-
-  HtmlFinalizer(this.options);
-
-  /// Only run on entry point .html files.
-  bool isPrimary(AssetId id) => options.isHtmlEntryPoint(id);
-
-  Future apply(Transform transform) =>
-      new _HtmlFinalizer(options, transform).apply();
-}
-
-const TYPE_DART = 'application/dart';
-const TYPE_JS = 'text/javascript';
-
-/// Internally adjusts urls in the html that we are about to inline.
-class _UrlNormalizer {
-  final Transform transform;
-
-  /// Asset where the original content (and original url) was found.
-  final AssetId sourceId;
-
-  /// Path to the top level folder relative to the transform primaryInput.
-  /// This should just be some arbitrary # of ../'s.
-  final String topLevelPath;
-
-  /// Whether or not the normalizer has changed something in the tree.
-  bool changed = false;
-
-  final BuildLogger logger;
-
-  _UrlNormalizer(transform, this.sourceId, this.logger)
-      : transform = transform,
-        topLevelPath = '../' *
-            (path.url.split(transform.primaryInput.id.path).length - 2);
-
-  static final _URL = new RegExp(r'url\(([^)]*)\)', multiLine: true);
-  static final _QUOTE = new RegExp('["\']', multiLine: true);
-
-  /// Visit the CSS text and replace any relative URLs so we can inline it.
-  // Ported from:
-  // https://github.com/Polymer/vulcanize/blob/c14f63696797cda18dc3d372b78aa3378acc691f/lib/vulcan.js#L149
-  // TODO(jmesserly): use csslib here instead? Parsing with RegEx is sadness.
-  // Maybe it's reliable enough for finding URLs in CSS? I'm not sure.
-  String visitCss(String cssText) {
-    var url = spanUrlFor(sourceId, transform, logger);
-    var src = new SourceFile(cssText, url: url);
-    return cssText.replaceAllMapped(_URL, (match) {
-      // Extract the URL, without any surrounding quotes.
-      var span = src.span(match.start, match.end);
-      var href = match[1].replaceAll(_QUOTE, '');
-      href = _newUrl(href, span);
-      return 'url($href)';
-    });
-  }
-
-  String _newUrl(String href, SourceSpan span) {
-    var uri = Uri.parse(href);
-    if (uri.isAbsolute) return href;
-    if (!uri.scheme.isEmpty) return href;
-    if (!uri.host.isEmpty) return href;
-    if (uri.path.isEmpty) return href; // Implies standalone ? or # in URI.
-    if (path.isAbsolute(href)) return href;
-
-    var id = uriToAssetId(sourceId, href, logger, span);
-    if (id == null) return href;
-    var primaryId = transform.primaryInput.id;
-
-    if (id.path.startsWith('lib/')) {
-      return '${topLevelPath}packages/${id.package}/${id.path.substring(4)}';
-    }
-
-    if (id.path.startsWith('asset/')) {
-      return '${topLevelPath}assets/${id.package}/${id.path.substring(6)}';
-    }
-
-    if (primaryId.package != id.package) {
-      // Technically we shouldn't get there
-      logger.error(INTERNAL_ERROR_DONT_KNOW_HOW_TO_IMPORT
-              .create({'target': id, 'source': primaryId, 'extra': ''}),
-          span: span);
-      return href;
-    }
-
-    var builder = path.url;
-    return builder.relative(builder.join('/', id.path),
-        from: builder.join('/', builder.dirname(primaryId.path)));
-  }
-}
-
-/// Validates url-like attributes and throws warnings as appropriate.
-/// TODO(jakemac): Move to the linter.
-class _UrlAttributeValidator extends TreeVisitor {
-  /// Asset where the original content (and original url) was found.
-  final AssetId sourceId;
-
-  final BuildLogger logger;
-
-  _UrlAttributeValidator(this.sourceId, this.logger);
-
-  visit(Node node) {
-    return super.visit(node);
-  }
-
-  visitElement(Element node) {
-    // TODO(jakemac): Support custom elements that extend html elements which
-    // have url-like attributes. This probably means keeping a list of which
-    // html elements support each url-like attribute.
-    if (!isCustomTagName(node.localName)) {
-      node.attributes.forEach((name, value) {
-        if (_urlAttributes.contains(name)) {
-          if (!name.startsWith('_') && value.contains(_BINDING_REGEX)) {
-            logger.warning(USE_UNDERSCORE_PREFIX.create({'name': name}),
-                span: node.sourceSpan, asset: sourceId);
-          } else if (name.startsWith('_') && !value.contains(_BINDING_REGEX)) {
-            logger.warning(
-                DONT_USE_UNDERSCORE_PREFIX.create({'name': name.substring(1)}),
-                span: node.sourceSpan, asset: sourceId);
-          }
-        }
-      });
-    }
-    return super.visitElement(node);
-  }
-}
-
-/// HTML attributes that expect a URL value.
-/// <http://dev.w3.org/html5/spec/section-index.html#attributes-1>
-///
-/// Every one of these attributes is a URL in every context where it is used in
-/// the DOM. The comments show every DOM element where an attribute can be used.
-///
-/// The _* version of each attribute is also supported, see http://goo.gl/5av8cU
-const _urlAttributes = const [
-  // in form
-  'action',
-  '_action',
-  // in body
-  'background',
-  '_background',
-  // in blockquote, del, ins, q
-  'cite',
-  '_cite',
-  // in object
-  'data',
-  '_data',
-  // in button, input
-  'formaction',
-  '_formaction',
-  // in a, area, link, base, command
-  'href',
-  '_href',
-  // in command
-  'icon',
-  '_icon',
-  // in html
-  'manifest',
-  '_manifest',
-  // in video
-  'poster',
-  '_poster',
-  // in audio, embed, iframe, img, input, script, source, track, video
-  'src',
-  '_src',
-];
-
-/// When inlining <link rel="stylesheet"> tags copy over all attributes to the
-/// style tag except these ones.
-const IGNORED_LINKED_STYLE_ATTRS = const [
-  'charset',
-  'href',
-  'href-lang',
-  'rel',
-  'rev'
-];
-
-/// Global RegExp objects.
-final _BINDING_REGEX = new RegExp(r'(({{.*}})|(\[\[.*\]\]))');