Index: sdk/lib/_internal/dartdoc/lib/markdown.dart |
=================================================================== |
--- sdk/lib/_internal/dartdoc/lib/markdown.dart (revision 32349) |
+++ sdk/lib/_internal/dartdoc/lib/markdown.dart (working copy) |
@@ -1,115 +0,0 @@ |
-// Copyright (c) 2012, 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. |
- |
-/// Parses text in a markdown-like format and renders to HTML. |
-library markdown; |
- |
-// TODO(rnystrom): Use "package:" URL (#4968). |
-part 'src/markdown/ast.dart'; |
-part 'src/markdown/block_parser.dart'; |
-part 'src/markdown/html_renderer.dart'; |
-part 'src/markdown/inline_parser.dart'; |
- |
-typedef Node Resolver(String name); |
- |
-/// Converts the given string of markdown to HTML. |
-String markdownToHtml(String markdown, {inlineSyntaxes, linkResolver}) { |
- final document = new Document(inlineSyntaxes: inlineSyntaxes, |
- linkResolver: linkResolver); |
- |
- // Replace windows line endings with unix line endings, and split. |
- final lines = markdown.replaceAll('\r\n','\n').split('\n'); |
- document.parseRefLinks(lines); |
- final blocks = document.parseLines(lines); |
- return renderToHtml(blocks); |
-} |
- |
-/// Replaces `<`, `&`, and `>`, with their HTML entity equivalents. |
-String escapeHtml(String html) { |
- return html.replaceAll('&', '&') |
- .replaceAll('<', '<') |
- .replaceAll('>', '>'); |
-} |
- |
-/// Maintains the context needed to parse a markdown document. |
-class Document { |
- final Map<String, Link> refLinks; |
- List<InlineSyntax> inlineSyntaxes; |
- Resolver linkResolver; |
- |
- Document({this.inlineSyntaxes, this.linkResolver}) |
- : refLinks = <String, Link>{}; |
- |
- parseRefLinks(List<String> lines) { |
- // This is a hideous regex. It matches: |
- // [id]: http:foo.com "some title" |
- // Where there may whitespace in there, and where the title may be in |
- // single quotes, double quotes, or parentheses. |
- final indent = r'^[ ]{0,3}'; // Leading indentation. |
- final id = r'\[([^\]]+)\]'; // Reference id in [brackets]. |
- final quote = r'"[^"]+"'; // Title in "double quotes". |
- final apos = r"'[^']+'"; // Title in 'single quotes'. |
- final paren = r"\([^)]+\)"; // Title in (parentheses). |
- final pattern = new RegExp( |
- '$indent$id:\\s+(\\S+)\\s*($quote|$apos|$paren|)\\s*\$'); |
- |
- for (int i = 0; i < lines.length; i++) { |
- final match = pattern.firstMatch(lines[i]); |
- if (match != null) { |
- // Parse the link. |
- var id = match[1]; |
- var url = match[2]; |
- var title = match[3]; |
- |
- if (title == '') { |
- // No title. |
- title = null; |
- } else { |
- // Remove "", '', or (). |
- title = title.substring(1, title.length - 1); |
- } |
- |
- // References are case-insensitive. |
- id = id.toLowerCase(); |
- |
- refLinks[id] = new Link(id, url, title); |
- |
- // Remove it from the output. We replace it with a blank line which will |
- // get consumed by later processing. |
- lines[i] = ''; |
- } |
- } |
- } |
- |
- /// Parse the given [lines] of markdown to a series of AST nodes. |
- List<Node> parseLines(List<String> lines) { |
- final parser = new BlockParser(lines, this); |
- |
- final blocks = []; |
- while (!parser.isDone) { |
- for (final syntax in BlockSyntax.syntaxes) { |
- if (syntax.canParse(parser)) { |
- final block = syntax.parse(parser); |
- if (block != null) blocks.add(block); |
- break; |
- } |
- } |
- } |
- |
- return blocks; |
- } |
- |
- /// Takes a string of raw text and processes all inline markdown tags, |
- /// returning a list of AST nodes. For example, given ``"*this **is** a* |
- /// `markdown`"``, returns: |
- /// `<em>this <strong>is</strong> a</em> <code>markdown</code>`. |
- List<Node> parseInline(String text) => new InlineParser(text, this).parse(); |
-} |
- |
-class Link { |
- final String id; |
- final String url; |
- final String title; |
- Link(this.id, this.url, this.title); |
-} |