Add markdown format support (#25)

Co-authored-by: Dawid Dziurla <dawidd0811@gmail.com>

node_modules/showdown/src/subParsers/makeMarkdown/blockquote.js

@@ -0,0 +1,22 @@
+showdown.subParser('makeMarkdown.blockquote', function (node, globals) {
+  'use strict';
+
+  var txt = '';
+  if (node.hasChildNodes()) {
+    var children = node.childNodes,
+        childrenLength = children.length;
+
+    for (var i = 0; i < childrenLength; ++i) {
+      var innerTxt = showdown.subParser('makeMarkdown.node')(children[i], globals);
+
+      if (innerTxt === '') {
+        continue;
+      }
+      txt += innerTxt;
+    }
+  }
+  // cleanup
+  txt = txt.trim();
+  txt = '> ' + txt.split('\n').join('\n> ');
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/codeBlock.js

@@ -0,0 +1,7 @@
+showdown.subParser('makeMarkdown.codeBlock', function (node, globals) {
+  'use strict';
+
+  var lang = node.getAttribute('language'),
+      num  = node.getAttribute('precodenum');
+  return '```' + lang + '\n' + globals.preList[num] + '\n```';
+});

node_modules/showdown/src/subParsers/makeMarkdown/codeSpan.js

@@ -0,0 +1,5 @@
+showdown.subParser('makeMarkdown.codeSpan', function (node) {
+  'use strict';
+
+  return '`' + node.innerHTML + '`';
+});

node_modules/showdown/src/subParsers/makeMarkdown/emphasis.js

@@ -0,0 +1,15 @@
+showdown.subParser('makeMarkdown.emphasis', function (node, globals) {
+  'use strict';
+
+  var txt = '';
+  if (node.hasChildNodes()) {
+    txt += '*';
+    var children = node.childNodes,
+        childrenLength = children.length;
+    for (var i = 0; i < childrenLength; ++i) {
+      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
+    }
+    txt += '*';
+  }
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/header.js

@@ -0,0 +1,17 @@
+showdown.subParser('makeMarkdown.header', function (node, globals, headerLevel) {
+  'use strict';
+
+  var headerMark = new Array(headerLevel + 1).join('#'),
+      txt = '';
+
+  if (node.hasChildNodes()) {
+    txt = headerMark + ' ';
+    var children = node.childNodes,
+        childrenLength = children.length;
+
+    for (var i = 0; i < childrenLength; ++i) {
+      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
+    }
+  }
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/hr.js

@@ -0,0 +1,5 @@
+showdown.subParser('makeMarkdown.hr', function () {
+  'use strict';
+
+  return '---';
+});

node_modules/showdown/src/subParsers/makeMarkdown/image.js

@@ -0,0 +1,18 @@
+showdown.subParser('makeMarkdown.image', function (node) {
+  'use strict';
+
+  var txt = '';
+  if (node.hasAttribute('src')) {
+    txt += '![' + node.getAttribute('alt') + '](';
+    txt += '<' + node.getAttribute('src') + '>';
+    if (node.hasAttribute('width') && node.hasAttribute('height')) {
+      txt += ' =' + node.getAttribute('width') + 'x' + node.getAttribute('height');
+    }
+
+    if (node.hasAttribute('title')) {
+      txt += ' "' + node.getAttribute('title') + '"';
+    }
+    txt += ')';
+  }
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/links.js

@@ -0,0 +1,20 @@
+showdown.subParser('makeMarkdown.links', function (node, globals) {
+  'use strict';
+
+  var txt = '';
+  if (node.hasChildNodes() && node.hasAttribute('href')) {
+    var children = node.childNodes,
+        childrenLength = children.length;
+    txt = '[';
+    for (var i = 0; i < childrenLength; ++i) {
+      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
+    }
+    txt += '](';
+    txt += '<' + node.getAttribute('href') + '>';
+    if (node.hasAttribute('title')) {
+      txt += ' "' + node.getAttribute('title') + '"';
+    }
+    txt += ')';
+  }
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/list.js

@@ -0,0 +1,33 @@
+showdown.subParser('makeMarkdown.list', function (node, globals, type) {
+  'use strict';
+
+  var txt = '';
+  if (!node.hasChildNodes()) {
+    return '';
+  }
+  var listItems       = node.childNodes,
+      listItemsLenght = listItems.length,
+      listNum = node.getAttribute('start') || 1;
+
+  for (var i = 0; i < listItemsLenght; ++i) {
+    if (typeof listItems[i].tagName === 'undefined' || listItems[i].tagName.toLowerCase() !== 'li') {
+      continue;
+    }
+
+    // define the bullet to use in list
+    var bullet = '';
+    if (type === 'ol') {
+      bullet = listNum.toString() + '. ';
+    } else {
+      bullet = '- ';
+    }
+
+    // parse list item
+    txt += bullet + showdown.subParser('makeMarkdown.listItem')(listItems[i], globals);
+    ++listNum;
+  }
+
+  // add comment at the end to prevent consecutive lists to be parsed as one
+  txt += '\n<!-- -->\n';
+  return txt.trim();
+});

node_modules/showdown/src/subParsers/makeMarkdown/listItem.js

@@ -0,0 +1,25 @@
+showdown.subParser('makeMarkdown.listItem', function (node, globals) {
+  'use strict';
+
+  var listItemTxt = '';
+
+  var children = node.childNodes,
+      childrenLenght = children.length;
+
+  for (var i = 0; i < childrenLenght; ++i) {
+    listItemTxt += showdown.subParser('makeMarkdown.node')(children[i], globals);
+  }
+  // if it's only one liner, we need to add a newline at the end
+  if (!/\n$/.test(listItemTxt)) {
+    listItemTxt += '\n';
+  } else {
+    // it's multiparagraph, so we need to indent
+    listItemTxt = listItemTxt
+      .split('\n')
+      .join('\n    ')
+      .replace(/^ {4}$/gm, '')
+      .replace(/\n\n+/g, '\n\n');
+  }
+
+  return listItemTxt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/node.js

@@ -0,0 +1,120 @@
+
+
+showdown.subParser('makeMarkdown.node', function (node, globals, spansOnly) {
+  'use strict';
+
+  spansOnly = spansOnly || false;
+
+  var txt = '';
+
+  // edge case of text without wrapper paragraph
+  if (node.nodeType === 3) {
+    return showdown.subParser('makeMarkdown.txt')(node, globals);
+  }
+
+  // HTML comment
+  if (node.nodeType === 8) {
+    return '<!--' + node.data + '-->\n\n';
+  }
+
+  // process only node elements
+  if (node.nodeType !== 1) {
+    return '';
+  }
+
+  var tagName = node.tagName.toLowerCase();
+
+  switch (tagName) {
+
+    //
+    // BLOCKS
+    //
+    case 'h1':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 1) + '\n\n'; }
+      break;
+    case 'h2':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 2) + '\n\n'; }
+      break;
+    case 'h3':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 3) + '\n\n'; }
+      break;
+    case 'h4':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 4) + '\n\n'; }
+      break;
+    case 'h5':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 5) + '\n\n'; }
+      break;
+    case 'h6':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.header')(node, globals, 6) + '\n\n'; }
+      break;
+
+    case 'p':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.paragraph')(node, globals) + '\n\n'; }
+      break;
+
+    case 'blockquote':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.blockquote')(node, globals) + '\n\n'; }
+      break;
+
+    case 'hr':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.hr')(node, globals) + '\n\n'; }
+      break;
+
+    case 'ol':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.list')(node, globals, 'ol') + '\n\n'; }
+      break;
+
+    case 'ul':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.list')(node, globals, 'ul') + '\n\n'; }
+      break;
+
+    case 'precode':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.codeBlock')(node, globals) + '\n\n'; }
+      break;
+
+    case 'pre':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.pre')(node, globals) + '\n\n'; }
+      break;
+
+    case 'table':
+      if (!spansOnly) { txt = showdown.subParser('makeMarkdown.table')(node, globals) + '\n\n'; }
+      break;
+
+    //
+    // SPANS
+    //
+    case 'code':
+      txt = showdown.subParser('makeMarkdown.codeSpan')(node, globals);
+      break;
+
+    case 'em':
+    case 'i':
+      txt = showdown.subParser('makeMarkdown.emphasis')(node, globals);
+      break;
+
+    case 'strong':
+    case 'b':
+      txt = showdown.subParser('makeMarkdown.strong')(node, globals);
+      break;
+
+    case 'del':
+      txt = showdown.subParser('makeMarkdown.strikethrough')(node, globals);
+      break;
+
+    case 'a':
+      txt = showdown.subParser('makeMarkdown.links')(node, globals);
+      break;
+
+    case 'img':
+      txt = showdown.subParser('makeMarkdown.image')(node, globals);
+      break;
+
+    default:
+      txt = node.outerHTML + '\n\n';
+  }
+
+  // common normalization
+  // TODO eventually
+
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/paragraph.js

@@ -0,0 +1,17 @@
+showdown.subParser('makeMarkdown.paragraph', function (node, globals) {
+  'use strict';
+
+  var txt = '';
+  if (node.hasChildNodes()) {
+    var children = node.childNodes,
+        childrenLength = children.length;
+    for (var i = 0; i < childrenLength; ++i) {
+      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
+    }
+  }
+
+  // some text normalization
+  txt = txt.trim();
+
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/pre.js

@@ -0,0 +1,6 @@
+showdown.subParser('makeMarkdown.pre', function (node, globals) {
+  'use strict';
+
+  var num  = node.getAttribute('prenum');
+  return '<pre>' + globals.preList[num] + '</pre>';
+});

node_modules/showdown/src/subParsers/makeMarkdown/strikethrough.js

@@ -0,0 +1,15 @@
+showdown.subParser('makeMarkdown.strikethrough', function (node, globals) {
+  'use strict';
+
+  var txt = '';
+  if (node.hasChildNodes()) {
+    txt += '~~';
+    var children = node.childNodes,
+        childrenLength = children.length;
+    for (var i = 0; i < childrenLength; ++i) {
+      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
+    }
+    txt += '~~';
+  }
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/strong.js

@@ -0,0 +1,15 @@
+showdown.subParser('makeMarkdown.strong', function (node, globals) {
+  'use strict';
+
+  var txt = '';
+  if (node.hasChildNodes()) {
+    txt += '**';
+    var children = node.childNodes,
+        childrenLength = children.length;
+    for (var i = 0; i < childrenLength; ++i) {
+      txt += showdown.subParser('makeMarkdown.node')(children[i], globals);
+    }
+    txt += '**';
+  }
+  return txt;
+});

node_modules/showdown/src/subParsers/makeMarkdown/table.js

@@ -0,0 +1,70 @@
+showdown.subParser('makeMarkdown.table', function (node, globals) {
+  'use strict';
+
+  var txt = '',
+      tableArray = [[], []],
+      headings   = node.querySelectorAll('thead>tr>th'),
+      rows       = node.querySelectorAll('tbody>tr'),
+      i, ii;
+  for (i = 0; i < headings.length; ++i) {
+    var headContent = showdown.subParser('makeMarkdown.tableCell')(headings[i], globals),
+        allign = '---';
+
+    if (headings[i].hasAttribute('style')) {
+      var style = headings[i].getAttribute('style').toLowerCase().replace(/\s/g, '');
+      switch (style) {
+        case 'text-align:left;':
+          allign = ':---';
+          break;
+        case 'text-align:right;':
+          allign = '---:';
+          break;
+        case 'text-align:center;':
+          allign = ':---:';
+          break;
+      }
+    }
+    tableArray[0][i] = headContent.trim();
+    tableArray[1][i] = allign;
+  }
+
+  for (i = 0; i < rows.length; ++i) {
+    var r = tableArray.push([]) - 1,
+        cols = rows[i].getElementsByTagName('td');
+
+    for (ii = 0; ii < headings.length; ++ii) {
+      var cellContent = ' ';
+      if (typeof cols[ii] !== 'undefined') {
+        cellContent = showdown.subParser('makeMarkdown.tableCell')(cols[ii], globals);
+      }
+      tableArray[r].push(cellContent);
+    }
+  }
+
+  var cellSpacesCount = 3;
+  for (i = 0; i < tableArray.length; ++i) {
+    for (ii = 0; ii < tableArray[i].length; ++ii) {
+      var strLen = tableArray[i][ii].length;
+      if (strLen > cellSpacesCount) {
+        cellSpacesCount = strLen;
+      }
+    }
+  }
+
+  for (i = 0; i < tableArray.length; ++i) {
+    for (ii = 0; ii < tableArray[i].length; ++ii) {
+      if (i === 1) {
+        if (tableArray[i][ii].slice(-1) === ':') {
+          tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii].slice(-1), cellSpacesCount - 1, '-') + ':';
+        } else {
+          tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii], cellSpacesCount, '-');
+        }
+      } else {
+        tableArray[i][ii] = showdown.helper.padEnd(tableArray[i][ii], cellSpacesCount);
+      }
+    }
+    txt += '| ' + tableArray[i].join(' | ') + ' |\n';
+  }
+
+  return txt.trim();
+});

node_modules/showdown/src/subParsers/makeMarkdown/tableCell.js

@@ -0,0 +1,15 @@
+showdown.subParser('makeMarkdown.tableCell', function (node, globals) {
+  'use strict';
+
+  var txt = '';
+  if (!node.hasChildNodes()) {
+    return '';
+  }
+  var children = node.childNodes,
+      childrenLength = children.length;
+
+  for (var i = 0; i < childrenLength; ++i) {
+    txt += showdown.subParser('makeMarkdown.node')(children[i], globals, true);
+  }
+  return txt.trim();
+});

node_modules/showdown/src/subParsers/makeMarkdown/txt.js

@@ -0,0 +1,43 @@
+showdown.subParser('makeMarkdown.txt', function (node) {
+  'use strict';
+
+  var txt = node.nodeValue;
+
+  // multiple spaces are collapsed
+  txt = txt.replace(/ +/g, ' ');
+
+  // replace the custom ¨NBSP; with a space
+  txt = txt.replace(/¨NBSP;/g, ' ');
+
+  // ", <, > and & should replace escaped html entities
+  txt = showdown.helper.unescapeHTMLEntities(txt);
+
+  // escape markdown magic characters
+  // emphasis, strong and strikethrough - can appear everywhere
+  // we also escape pipe (|) because of tables
+  // and escape ` because of code blocks and spans
+  txt = txt.replace(/([*_~|`])/g, '\\$1');
+
+  // escape > because of blockquotes
+  txt = txt.replace(/^(\s*)>/g, '\\$1>');
+
+  // hash character, only troublesome at the beginning of a line because of headers
+  txt = txt.replace(/^#/gm, '\\#');
+
+  // horizontal rules
+  txt = txt.replace(/^(\s*)([-=]{3,})(\s*)$/, '$1\\$2$3');
+
+  // dot, because of ordered lists, only troublesome at the beginning of a line when preceded by an integer
+  txt = txt.replace(/^( {0,3}\d+)\./gm, '$1\\.');
+
+  // +, * and -, at the beginning of a line becomes a list, so we need to escape them also (asterisk was already escaped)
+  txt = txt.replace(/^( {0,3})([+-])/gm, '$1\\$2');
+
+  // images and links, ] followed by ( is problematic, so we escape it
+  txt = txt.replace(/]([\s]*)\(/g, '\\]$1\\(');
+
+  // reference URIs must also be escaped
+  txt = txt.replace(/^ {0,3}\[([\S \t]*?)]:/gm, '\\[$1]:');
+
+  return txt;
+});