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134 lines
4.7 KiB
JavaScript
134 lines
4.7 KiB
JavaScript
import { edit, noop } from './utils'
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/* eslint-disable no-useless-escape */
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/**
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* Block-Level Rules
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*/
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export const block = {
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newline: /^\n+/,
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code: /^( {4}[^\n]+\n*)+/,
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fences: noop,
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hr: /^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* *){3,})(?:\n+|$)/,
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heading: /^ {0,3}(#{1,6})(?: +([^\n]*?)( *#+ *)?(?:\n+|$)|(?:\n+|$))/,
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nptable: noop,
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blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
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list: /^( {0,3})(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
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html: '^ {0,3}(?:' + // optional indentation
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'<(script|pre|style)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' + // (1)
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'|comment[^\\n]*(\\n+|$)' + // (2)
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'|<\\?[\\s\\S]*?\\?>\\n*' + // (3)
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'|<![A-Z][\\s\\S]*?>\\n*' + // (4)
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'|<!\\[CDATA\\[[\\s\\S]*?\\]\\]>\\n*' + // (5)
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'|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:\\n{2,}|$)' + // (6)
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'|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=\\h*\\n)[\\s\\S]*?(?:\\n{2,}|$)' + // (7) open tag
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'|</(?!script|pre|style)[a-z][\\w-]*\\s*>(?=\\h*\\n)[\\s\\S]*?(?:\\n{2,}|$)' + // (7) closing tag
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')',
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def: /^ {0,3}\[(label)\]: *\n? *<?([^\s>]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/,
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table: noop,
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lheading: /^([^\n]+)\n {0,3}(=|-){2,} *(?:\n+|$)/,
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paragraph: /^([^\n]+(?:\n(?!hr|heading|lheading| {0,3}>|<\/?(?:tag)(?: +|\n|\/?>)|<(?:script|pre|style|!--))[^\n]+)*)/,
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text: /^[^\n]+/,
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// extra
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frontmatter: /^---\n([\s\S]+?)---(?:\n+|$)/,
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multiplemath: /^\$\$\n([\s\S]+?)\n\$\$(?:\n+|$)/
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}
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block._label = /(?!\s*\])(?:\\[\[\]]|[^\[\]])+/
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block._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/
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block.def = edit(block.def)
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.replace('label', block._label)
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.replace('title', block._title)
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.getRegex()
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block.checkbox = /^\[([ xX])\] +/
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block.bullet = /(?:[*+-]|\d{1,9}(?:\.|\)))/ // patched: support "(" as ordered list delimiter too
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// patched: fix https://github.com/marktext/marktext/issues/831#issuecomment-477719256
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// block.item = /^( *)(bull) ?[^\n]*(?:\n(?!\1bull ?)[^\n]*)*/
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block.item = /^(( {0,3})(bull) [^\n]*(?:\n(?!(\2bull |\2bull\n))[^\n]*)*|( {0,3})(bull)(?:\n(?!(\2bull |\2bull\n)))*)/
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block.item = edit(block.item, 'gm')
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.replace(/bull/g, block.bullet)
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.getRegex()
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block.list = edit(block.list)
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.replace(/bull/g, block.bullet)
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.replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))')
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.replace('def', '\\n+(?=' + block.def.source + ')')
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.getRegex()
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block._tag = 'address|article|aside|base|basefont|blockquote|body|caption' +
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'|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption' +
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'|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe' +
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'|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option' +
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'|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr' +
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'|track|ul'
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block._comment = /<!--(?!-?>)[\s\S]*?-->/
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block.html = edit(block.html, 'i')
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.replace('comment', block._comment)
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.replace('tag', block._tag)
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.replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/)
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.getRegex()
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block.paragraph = edit(block.paragraph)
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.replace('hr', block.hr)
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.replace('heading', block.heading)
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.replace('lheading', block.lheading)
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.replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
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.getRegex()
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block.blockquote = edit(block.blockquote)
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.replace('paragraph', block.paragraph)
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.getRegex()
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/**
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* Normal Block Grammar
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*/
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export const normal = Object.assign({}, block)
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/**
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* GFM Block Grammar
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*/
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export const gfm = Object.assign({}, normal, {
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fences: /^ {0,3}(`{3,}|~{3,})([^`\n]*)\n(?:|([\s\S]*?)\n)(?: {0,3}\1[~`]* *(?:\n+|$)|$)/,
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paragraph: /^/
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})
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gfm.paragraph = edit(block.paragraph)
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.replace('(?!', '(?!' +
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gfm.fences.source.replace('\\1', '\\2') + '|' +
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block.list.source.replace('\\1', '\\3') + '|')
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.getRegex()
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/**
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* GFM + Tables Block Grammar
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*/
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export const tables = Object.assign({}, gfm, {
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nptable: /^ *([^|\n ].*\|.*)\n *([-:]+ *\|[-| :]*)(?:\n((?:.*[^>\n ].*(?:\n|$))*)\n*|$)/,
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table: /^ *\|(.+)\n *\|?( *[-:]+[-| :]*)(?:\n((?: *[^>\n ].*(?:\n|$))*)\n*|$)/
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})
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/**
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* Pedantic grammar
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*/
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export const pedantic = Object.assign({}, normal, {
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html: edit(
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'^ *(?:comment *(?:\\n|\\s*$)' +
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'|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' + // closed tag
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'|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\s]*)*?/?> *(?:\\n{2,}|\\s*$))')
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.replace('comment', block._comment)
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.replace(/tag/g, '(?!(?:' +
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'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub' +
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'|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)' +
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'\\b)\\w+(?!:|[^\\w\\s@]*@)\\b')
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.getRegex(),
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def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/
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})
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/* eslint-ensable no-useless-escape */
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