Add markdown format support (#25)

Co-authored-by: Dawid Dziurla <dawidd0811@gmail.com>
2026-08-30 11:22:17 -04:00 · 2020-11-30 12:51:34 -05:00
parent d1b07d9ed7
commit 2095e6ffe3
941 changed files with 37481 additions and 15 deletions
@@ -0,0 +1,98 @@
+showdown.subParser('hashHTMLBlocks', function (text, options, globals) {
+  'use strict';
+  text = globals.converter._dispatch('hashHTMLBlocks.before', text, options, globals);
+
+  var blockTags = [
+        'pre',
+        'div',
+        'h1',
+        'h2',
+        'h3',
+        'h4',
+        'h5',
+        'h6',
+        'blockquote',
+        'table',
+        'dl',
+        'ol',
+        'ul',
+        'script',
+        'noscript',
+        'form',
+        'fieldset',
+        'iframe',
+        'math',
+        'style',
+        'section',
+        'header',
+        'footer',
+        'nav',
+        'article',
+        'aside',
+        'address',
+        'audio',
+        'canvas',
+        'figure',
+        'hgroup',
+        'output',
+        'video',
+        'p'
+      ],
+      repFunc = function (wholeMatch, match, left, right) {
+        var txt = wholeMatch;
+        // check if this html element is marked as markdown
+        // if so, it's contents should be parsed as markdown
+        if (left.search(/\bmarkdown\b/) !== -1) {
+          txt = left + globals.converter.makeHtml(match) + right;
+        }
+        return '\n\n¨K' + (globals.gHtmlBlocks.push(txt) - 1) + 'K\n\n';
+      };
+
+  if (options.backslashEscapesHTMLTags) {
+    // encode backslash escaped HTML tags
+    text = text.replace(/\\<(\/?[^>]+?)>/g, function (wm, inside) {
+      return '&lt;' + inside + '&gt;';
+    });
+  }
+
+  // hash HTML Blocks
+  for (var i = 0; i < blockTags.length; ++i) {
+
+    var opTagPos,
+        rgx1     = new RegExp('^ {0,3}(<' + blockTags[i] + '\\b[^>]*>)', 'im'),
+        patLeft  = '<' + blockTags[i] + '\\b[^>]*>',
+        patRight = '</' + blockTags[i] + '>';
+    // 1. Look for the first position of the first opening HTML tag in the text
+    while ((opTagPos = showdown.helper.regexIndexOf(text, rgx1)) !== -1) {
+
+      // if the HTML tag is \ escaped, we need to escape it and break
+
+
+      //2. Split the text in that position
+      var subTexts = showdown.helper.splitAtIndex(text, opTagPos),
+          //3. Match recursively
+          newSubText1 = showdown.helper.replaceRecursiveRegExp(subTexts[1], repFunc, patLeft, patRight, 'im');
+
+      // prevent an infinite loop
+      if (newSubText1 === subTexts[1]) {
+        break;
+      }
+      text = subTexts[0].concat(newSubText1);
+    }
+  }
+  // HR SPECIAL CASE
+  text = text.replace(/(\n {0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,
+    showdown.subParser('hashElement')(text, options, globals));
+
+  // Special case for standalone HTML comments
+  text = showdown.helper.replaceRecursiveRegExp(text, function (txt) {
+    return '\n\n¨K' + (globals.gHtmlBlocks.push(txt) - 1) + 'K\n\n';
+  }, '^ {0,3}<!--', '-->', 'gm');
+
+  // PHP and ASP-style processor instructions (<?...?> and <%...%>)
+  text = text.replace(/(?:\n\n)( {0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,
+    showdown.subParser('hashElement')(text, options, globals));
+
+  text = globals.converter._dispatch('hashHTMLBlocks.after', text, options, globals);
+  return text;
+});