define([ "underscore", "utils", "classes/Extension", ], function(_, utils, Extension) { var markdownFootnotes = new Extension("markdownFootnotes", "Markdown Footnotes", true); markdownFootnotes.settingsBlock = '

Adds support for Markdown footnotes.

'; var inlineTags = new RegExp([ '^(<\\/?(a|abbr|acronym|applet|area|b|basefont|', 'bdo|big|button|cite|code|del|dfn|em|figcaption|', 'font|i|iframe|img|input|ins|kbd|label|map|', 'mark|meter|object|param|progress|q|ruby|rp|rt|s|', 'samp|script|select|small|span|strike|strong|', 'sub|sup|textarea|time|tt|u|var|wbr)[^>]*>|', '<(br)\\s?\\/?>)$' ].join(''), 'i'); var previousPostConversion = undefined; markdownFootnotes.onEditorConfigure = function(editor) { var converter = editor.getConverter(); previousPostConversion = converter.hooks.postConversion; converter.hooks.chain("postNormalization", _StripFootnoteDefinitions); converter.hooks.chain("postBlockGamut", _DoFootnotes); converter.hooks.chain("postConversion", _PrintFootnotes); }; var footnotes = undefined; var usedFootnotes = undefined; function _StripFootnoteDefinitions(text) { footnotes = {}; usedFootnotes = []; text = text.replace(/\n[ ]{0,3}\[\^(.+?)\]\:[ \t]*\n?([\s\S]*?)\n{1,2}((?=\n[ ]{0,3}\S)|\Z)/g, function(wholeMatch, m1, m2) { m1 = utils.slugify(m1); m2 += "\n"; m2 = m2.replace(/^[ ]{0,3}/g, ""); footnotes[m1] = m2; return "\n"; }); return text; } var blockGamutHookCallback = undefined; function _DoFootnotes(text, blockGamutHookCallbackParam) { blockGamutHookCallback = blockGamutHookCallbackParam; var footnoteCounter = 0; text = text.replace(/\[\^(.+?)\]/g, function(wholeMatch, m1) { var id = utils.slugify(m1); var footnote = footnotes[id]; if(footnote === undefined) { return ""; } footnoteCounter++; usedFootnotes.push(id); return '' + footnoteCounter + ''; }); return text; } function _PrintFootnotes(text) { if(usedFootnotes.length === 0) { return text; } _.each(footnotes, function(footnote, id) { var formattedfootnote = blockGamutHookCallback(footnote); formattedfootnote = unescapeSpecialChars(formattedfootnote); formattedfootnote = formattedfootnote.replace(/~D/g, "$$").replace(/~T/g, "~"); formattedfootnote = previousPostConversion(formattedfootnote); formattedfootnote = formattedfootnote.replace(/<[^>]*>?/gi, function(tag) { return tag.match(inlineTags) ? tag : ''; }); footnotes[id] = formattedfootnote; }); text += '\n\n
\n
\n
    \n\n'; _.each(usedFootnotes, function(id) { var footnote = footnotes[id]; text += '
  1. ' + footnote + '
  2. \n\n'; }); text += '
\n
'; return text; } // Duplicated from PageDown converter function unescapeSpecialChars(text) { // Swap back in all the special characters we've hidden. text = text.replace(/~E(\d+)E/g, function(wholeMatch, m1) { var charCodeToReplace = parseInt(m1); return String.fromCharCode(charCodeToReplace); }); return text; } return markdownFootnotes; });