New version: created v3

2026-09-24 01:52:09 +00:00 · 2022-07-23 15:08:47 +02:00
parent eb3bdd5962
commit a2d46e7b94
551 changed files with 103679 additions and 4704 deletions
@@ -0,0 +1,302 @@
+import {
+  noopTest,
+  edit,
+  merge
+} from './helpers.js';
+
+/**
+ * Block-Level Grammar
+ */
+export const block = {
+  newline: /^(?: *(?:\n|$))+/,
+  code: /^( {4}[^\n]+(?:\n(?: *(?:\n|$))*)?)+/,
+  fences: /^ {0,3}(`{3,}(?=[^`\n]*\n)|~{3,})([^\n]*)\n(?:|([\s\S]*?)\n)(?: {0,3}\1[~`]* *(?=\n|$)|$)/,
+  hr: /^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* *){3,})(?:\n+|$)/,
+  heading: /^ {0,3}(#{1,6})(?=\s|$)(.*)(?:\n+|$)/,
+  blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
+  list: /^( {0,3}bull)( [^\n]+?)?(?:\n|$)/,
+  html: '^ {0,3}(?:' // optional indentation
+    + '<(script|pre|style|textarea)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' // (1)
+    + '|comment[^\\n]*(\\n+|$)' // (2)
+    + '|<\\?[\\s\\S]*?(?:\\?>\\n*|$)' // (3)
+    + '|<![A-Z][\\s\\S]*?(?:>\\n*|$)' // (4)
+    + '|<!\\[CDATA\\[[\\s\\S]*?(?:\\]\\]>\\n*|$)' // (5)
+    + '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (6)
+    + '|<(?!script|pre|style|textarea)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (7) open tag
+    + '|</(?!script|pre|style|textarea)[a-z][\\w-]*\\s*>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (7) closing tag
+    + ')',
+  def: /^ {0,3}\[(label)\]: *(?:\n *)?<?([^\s>]+)>?(?:(?: +(?:\n *)?| *\n *)(title))? *(?:\n+|$)/,
+  table: noopTest,
+  lheading: /^([^\n]+)\n {0,3}(=+|-+) *(?:\n+|$)/,
+  // regex template, placeholders will be replaced according to different paragraph
+  // interruption rules of commonmark and the original markdown spec:
+  _paragraph: /^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html|table| +\n)[^\n]+)*)/,
+  text: /^[^\n]+/
+};
+
+block._label = /(?!\s*\])(?:\\.|[^\[\]\\])+/;
+block._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/;
+block.def = edit(block.def)
+  .replace('label', block._label)
+  .replace('title', block._title)
+  .getRegex();
+
+block.bullet = /(?:[*+-]|\d{1,9}[.)])/;
+block.listItemStart = edit(/^( *)(bull) */)
+  .replace('bull', block.bullet)
+  .getRegex();
+
+block.list = edit(block.list)
+  .replace(/bull/g, block.bullet)
+  .replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))')
+  .replace('def', '\\n+(?=' + block.def.source + ')')
+  .getRegex();
+
+block._tag = 'address|article|aside|base|basefont|blockquote|body|caption'
+  + '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption'
+  + '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe'
+  + '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option'
+  + '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr'
+  + '|track|ul';
+block._comment = /<!--(?!-?>)[\s\S]*?(?:-->|$)/;
+block.html = edit(block.html, 'i')
+  .replace('comment', block._comment)
+  .replace('tag', block._tag)
+  .replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/)
+  .getRegex();
+
+block.paragraph = edit(block._paragraph)
+  .replace('hr', block.hr)
+  .replace('heading', ' {0,3}#{1,6} ')
+  .replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs
+  .replace('|table', '')
+  .replace('blockquote', ' {0,3}>')
+  .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+  .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+  .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
+  .replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
+  .getRegex();
+
+block.blockquote = edit(block.blockquote)
+  .replace('paragraph', block.paragraph)
+  .getRegex();
+
+/**
+ * Normal Block Grammar
+ */
+
+block.normal = merge({}, block);
+
+/**
+ * GFM Block Grammar
+ */
+
+block.gfm = merge({}, block.normal, {
+  table: '^ *([^\\n ].*\\|.*)\\n' // Header
+    + ' {0,3}(?:\\| *)?(:?-+:? *(?:\\| *:?-+:? *)*)(?:\\| *)?' // Align
+    + '(?:\\n((?:(?! *\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)' // Cells
+});
+
+block.gfm.table = edit(block.gfm.table)
+  .replace('hr', block.hr)
+  .replace('heading', ' {0,3}#{1,6} ')
+  .replace('blockquote', ' {0,3}>')
+  .replace('code', ' {4}[^\\n]')
+  .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+  .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+  .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
+  .replace('tag', block._tag) // tables can be interrupted by type (6) html blocks
+  .getRegex();
+
+block.gfm.paragraph = edit(block._paragraph)
+  .replace('hr', block.hr)
+  .replace('heading', ' {0,3}#{1,6} ')
+  .replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs
+  .replace('table', block.gfm.table) // interrupt paragraphs with table
+  .replace('blockquote', ' {0,3}>')
+  .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+  .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+  .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
+  .replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
+  .getRegex();
+/**
+ * Pedantic grammar (original John Gruber's loose markdown specification)
+ */
+
+block.pedantic = merge({}, block.normal, {
+  html: edit(
+    '^ *(?:comment *(?:\\n|\\s*$)'
+    + '|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' // closed tag
+    + '|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\s]*)*?/?> *(?:\\n{2,}|\\s*$))')
+    .replace('comment', block._comment)
+    .replace(/tag/g, '(?!(?:'
+      + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub'
+      + '|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)'
+      + '\\b)\\w+(?!:|[^\\w\\s@]*@)\\b')
+    .getRegex(),
+  def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
+  heading: /^(#{1,6})(.*)(?:\n+|$)/,
+  fences: noopTest, // fences not supported
+  paragraph: edit(block.normal._paragraph)
+    .replace('hr', block.hr)
+    .replace('heading', ' *#{1,6} *[^\n]')
+    .replace('lheading', block.lheading)
+    .replace('blockquote', ' {0,3}>')
+    .replace('|fences', '')
+    .replace('|list', '')
+    .replace('|html', '')
+    .getRegex()
+});
+
+/**
+ * Inline-Level Grammar
+ */
+export const inline = {
+  escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,
+  autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/,
+  url: noopTest,
+  tag: '^comment'
+    + '|^</[a-zA-Z][\\w:-]*\\s*>' // self-closing tag
+    + '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' // open tag
+    + '|^<\\?[\\s\\S]*?\\?>' // processing instruction, e.g. <?php ?>
+    + '|^<![a-zA-Z]+\\s[\\s\\S]*?>' // declaration, e.g. <!DOCTYPE html>
+    + '|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>', // CDATA section
+  link: /^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,
+  reflink: /^!?\[(label)\]\[(ref)\]/,
+  nolink: /^!?\[(ref)\](?:\[\])?/,
+  reflinkSearch: 'reflink|nolink(?!\\()',
+  emStrong: {
+    lDelim: /^(?:\*+(?:([punct_])|[^\s*]))|^_+(?:([punct*])|([^\s_]))/,
+    //        (1) and (2) can only be a Right Delimiter. (3) and (4) can only be Left.  (5) and (6) can be either Left or Right.
+    //        () Skip orphan delim inside strong    (1) #***                (2) a***#, a***                   (3) #***a, ***a                 (4) ***#              (5) #***#                 (6) a***a
+    rDelimAst: /^[^_*]*?\_\_[^_*]*?\*[^_*]*?(?=\_\_)|[punct_](\*+)(?=[\s]|$)|[^punct*_\s](\*+)(?=[punct_\s]|$)|[punct_\s](\*+)(?=[^punct*_\s])|[\s](\*+)(?=[punct_])|[punct_](\*+)(?=[punct_])|[^punct*_\s](\*+)(?=[^punct*_\s])/,
+    rDelimUnd: /^[^_*]*?\*\*[^_*]*?\_[^_*]*?(?=\*\*)|[punct*](\_+)(?=[\s]|$)|[^punct*_\s](\_+)(?=[punct*\s]|$)|[punct*\s](\_+)(?=[^punct*_\s])|[\s](\_+)(?=[punct*])|[punct*](\_+)(?=[punct*])/ // ^- Not allowed for _
+  },
+  code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,
+  br: /^( {2,}|\\)\n(?!\s*$)/,
+  del: noopTest,
+  text: /^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\<!\[`*_]|\b_|$)|[^ ](?= {2,}\n)))/,
+  punctuation: /^([\spunctuation])/
+};
+
+// list of punctuation marks from CommonMark spec
+// without * and _ to handle the different emphasis markers * and _
+inline._punctuation = '!"#$%&\'()+\\-.,/:;<=>?@\\[\\]`^{|}~';
+inline.punctuation = edit(inline.punctuation).replace(/punctuation/g, inline._punctuation).getRegex();
+
+// sequences em should skip over [title](link), `code`, <html>
+inline.blockSkip = /\[[^\]]*?\]\([^\)]*?\)|`[^`]*?`|<[^>]*?>/g;
+inline.escapedEmSt = /\\\*|\\_/g;
+
+inline._comment = edit(block._comment).replace('(?:-->|$)', '-->').getRegex();
+
+inline.emStrong.lDelim = edit(inline.emStrong.lDelim)
+  .replace(/punct/g, inline._punctuation)
+  .getRegex();
+
+inline.emStrong.rDelimAst = edit(inline.emStrong.rDelimAst, 'g')
+  .replace(/punct/g, inline._punctuation)
+  .getRegex();
+
+inline.emStrong.rDelimUnd = edit(inline.emStrong.rDelimUnd, 'g')
+  .replace(/punct/g, inline._punctuation)
+  .getRegex();
+
+inline._escapes = /\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g;
+
+inline._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/;
+inline._email = /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/;
+inline.autolink = edit(inline.autolink)
+  .replace('scheme', inline._scheme)
+  .replace('email', inline._email)
+  .getRegex();
+
+inline._attribute = /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/;
+
+inline.tag = edit(inline.tag)
+  .replace('comment', inline._comment)
+  .replace('attribute', inline._attribute)
+  .getRegex();
+
+inline._label = /(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/;
+inline._href = /<(?:\\.|[^\n<>\\])+>|[^\s\x00-\x1f]*/;
+inline._title = /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/;
+
+inline.link = edit(inline.link)
+  .replace('label', inline._label)
+  .replace('href', inline._href)
+  .replace('title', inline._title)
+  .getRegex();
+
+inline.reflink = edit(inline.reflink)
+  .replace('label', inline._label)
+  .replace('ref', block._label)
+  .getRegex();
+
+inline.nolink = edit(inline.nolink)
+  .replace('ref', block._label)
+  .getRegex();
+
+inline.reflinkSearch = edit(inline.reflinkSearch, 'g')
+  .replace('reflink', inline.reflink)
+  .replace('nolink', inline.nolink)
+  .getRegex();
+
+/**
+ * Normal Inline Grammar
+ */
+
+inline.normal = merge({}, inline);
+
+/**
+ * Pedantic Inline Grammar
+ */
+
+inline.pedantic = merge({}, inline.normal, {
+  strong: {
+    start: /^__|\*\*/,
+    middle: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
+    endAst: /\*\*(?!\*)/g,
+    endUnd: /__(?!_)/g
+  },
+  em: {
+    start: /^_|\*/,
+    middle: /^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,
+    endAst: /\*(?!\*)/g,
+    endUnd: /_(?!_)/g
+  },
+  link: edit(/^!?\[(label)\]\((.*?)\)/)
+    .replace('label', inline._label)
+    .getRegex(),
+  reflink: edit(/^!?\[(label)\]\s*\[([^\]]*)\]/)
+    .replace('label', inline._label)
+    .getRegex()
+});
+
+/**
+ * GFM Inline Grammar
+ */
+
+inline.gfm = merge({}, inline.normal, {
+  escape: edit(inline.escape).replace('])', '~|])').getRegex(),
+  _extended_email: /[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,
+  url: /^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,
+  _backpedal: /(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/,
+  del: /^(~~?)(?=[^\s~])([\s\S]*?[^\s~])\1(?=[^~]|$)/,
+  text: /^([`~]+|[^`~])(?:(?= {2,}\n)|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)|[\s\S]*?(?:(?=[\\<!\[`*~_]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)))/
+});
+
+inline.gfm.url = edit(inline.gfm.url, 'i')
+  .replace('email', inline.gfm._extended_email)
+  .getRegex();
+/**
+ * GFM + Line Breaks Inline Grammar
+ */
+
+inline.breaks = merge({}, inline.gfm, {
+  br: edit(inline.br).replace('{2,}', '*').getRegex(),
+  text: edit(inline.gfm.text)
+    .replace('\\b_', '\\b_| {2,}\\n')
+    .replace(/\{2,\}/g, '*')
+    .getRegex()
+});