| 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);
|
| -}
|
|
|