mirror of https://github.com/jkjoy/sunpeiwen.git
416 lines
10 KiB
JavaScript
416 lines
10 KiB
JavaScript
(function (Prism) {
|
|
|
|
// Allow only one line break
|
|
var inner = /(?:\\.|[^\\\n\r]|(?:\n|\r\n?)(?![\r\n]))/.source;
|
|
|
|
/**
|
|
* This function is intended for the creation of the bold or italic pattern.
|
|
*
|
|
* This also adds a lookbehind group to the given pattern to ensure that the pattern is not backslash-escaped.
|
|
*
|
|
* _Note:_ Keep in mind that this adds a capturing group.
|
|
*
|
|
* @param {string} pattern
|
|
* @returns {RegExp}
|
|
*/
|
|
function createInline(pattern) {
|
|
pattern = pattern.replace(/<inner>/g, function () { return inner; });
|
|
return RegExp(/((?:^|[^\\])(?:\\{2})*)/.source + '(?:' + pattern + ')');
|
|
}
|
|
|
|
|
|
var tableCell = /(?:\\.|``(?:[^`\r\n]|`(?!`))+``|`[^`\r\n]+`|[^\\|\r\n`])+/.source;
|
|
var tableRow = /\|?__(?:\|__)+\|?(?:(?:\n|\r\n?)|(?![\s\S]))/.source.replace(/__/g, function () { return tableCell; });
|
|
var tableLine = /\|?[ \t]*:?-{3,}:?[ \t]*(?:\|[ \t]*:?-{3,}:?[ \t]*)+\|?(?:\n|\r\n?)/.source;
|
|
|
|
|
|
Prism.languages.markdown = Prism.languages.extend('markup', {});
|
|
Prism.languages.insertBefore('markdown', 'prolog', {
|
|
'front-matter-block': {
|
|
pattern: /(^(?:\s*[\r\n])?)---(?!.)[\s\S]*?[\r\n]---(?!.)/,
|
|
lookbehind: true,
|
|
greedy: true,
|
|
inside: {
|
|
'punctuation': /^---|---$/,
|
|
'front-matter': {
|
|
pattern: /\S+(?:\s+\S+)*/,
|
|
alias: ['yaml', 'language-yaml'],
|
|
inside: Prism.languages.yaml
|
|
}
|
|
}
|
|
},
|
|
'blockquote': {
|
|
// > ...
|
|
pattern: /^>(?:[\t ]*>)*/m,
|
|
alias: 'punctuation'
|
|
},
|
|
'table': {
|
|
pattern: RegExp('^' + tableRow + tableLine + '(?:' + tableRow + ')*', 'm'),
|
|
inside: {
|
|
'table-data-rows': {
|
|
pattern: RegExp('^(' + tableRow + tableLine + ')(?:' + tableRow + ')*$'),
|
|
lookbehind: true,
|
|
inside: {
|
|
'table-data': {
|
|
pattern: RegExp(tableCell),
|
|
inside: Prism.languages.markdown
|
|
},
|
|
'punctuation': /\|/
|
|
}
|
|
},
|
|
'table-line': {
|
|
pattern: RegExp('^(' + tableRow + ')' + tableLine + '$'),
|
|
lookbehind: true,
|
|
inside: {
|
|
'punctuation': /\||:?-{3,}:?/
|
|
}
|
|
},
|
|
'table-header-row': {
|
|
pattern: RegExp('^' + tableRow + '$'),
|
|
inside: {
|
|
'table-header': {
|
|
pattern: RegExp(tableCell),
|
|
alias: 'important',
|
|
inside: Prism.languages.markdown
|
|
},
|
|
'punctuation': /\|/
|
|
}
|
|
}
|
|
}
|
|
},
|
|
'code': [
|
|
{
|
|
// Prefixed by 4 spaces or 1 tab and preceded by an empty line
|
|
pattern: /((?:^|\n)[ \t]*\n|(?:^|\r\n?)[ \t]*\r\n?)(?: {4}|\t).+(?:(?:\n|\r\n?)(?: {4}|\t).+)*/,
|
|
lookbehind: true,
|
|
alias: 'keyword'
|
|
},
|
|
{
|
|
// ```optional language
|
|
// code block
|
|
// ```
|
|
pattern: /^```[\s\S]*?^```$/m,
|
|
greedy: true,
|
|
inside: {
|
|
'code-block': {
|
|
pattern: /^(```.*(?:\n|\r\n?))[\s\S]+?(?=(?:\n|\r\n?)^```$)/m,
|
|
lookbehind: true
|
|
},
|
|
'code-language': {
|
|
pattern: /^(```).+/,
|
|
lookbehind: true
|
|
},
|
|
'punctuation': /```/
|
|
}
|
|
}
|
|
],
|
|
'title': [
|
|
{
|
|
// title 1
|
|
// =======
|
|
|
|
// title 2
|
|
// -------
|
|
pattern: /\S.*(?:\n|\r\n?)(?:==+|--+)(?=[ \t]*$)/m,
|
|
alias: 'important',
|
|
inside: {
|
|
punctuation: /==+$|--+$/
|
|
}
|
|
},
|
|
{
|
|
// # title 1
|
|
// ###### title 6
|
|
pattern: /(^\s*)#.+/m,
|
|
lookbehind: true,
|
|
alias: 'important',
|
|
inside: {
|
|
punctuation: /^#+|#+$/
|
|
}
|
|
}
|
|
],
|
|
'hr': {
|
|
// ***
|
|
// ---
|
|
// * * *
|
|
// -----------
|
|
pattern: /(^\s*)([*-])(?:[\t ]*\2){2,}(?=\s*$)/m,
|
|
lookbehind: true,
|
|
alias: 'punctuation'
|
|
},
|
|
'list': {
|
|
// * item
|
|
// + item
|
|
// - item
|
|
// 1. item
|
|
pattern: /(^\s*)(?:[*+-]|\d+\.)(?=[\t ].)/m,
|
|
lookbehind: true,
|
|
alias: 'punctuation'
|
|
},
|
|
'url-reference': {
|
|
// [id]: http://example.com "Optional title"
|
|
// [id]: http://example.com 'Optional title'
|
|
// [id]: http://example.com (Optional title)
|
|
// [id]: <http://example.com> "Optional title"
|
|
pattern: /!?\[[^\]]+\]:[\t ]+(?:\S+|<(?:\\.|[^>\\])+>)(?:[\t ]+(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\)))?/,
|
|
inside: {
|
|
'variable': {
|
|
pattern: /^(!?\[)[^\]]+/,
|
|
lookbehind: true
|
|
},
|
|
'string': /(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\))$/,
|
|
'punctuation': /^[\[\]!:]|[<>]/
|
|
},
|
|
alias: 'url'
|
|
},
|
|
'bold': {
|
|
// **strong**
|
|
// __strong__
|
|
|
|
// allow one nested instance of italic text using the same delimiter
|
|
pattern: createInline(/\b__(?:(?!_)<inner>|_(?:(?!_)<inner>)+_)+__\b|\*\*(?:(?!\*)<inner>|\*(?:(?!\*)<inner>)+\*)+\*\*/.source),
|
|
lookbehind: true,
|
|
greedy: true,
|
|
inside: {
|
|
'content': {
|
|
pattern: /(^..)[\s\S]+(?=..$)/,
|
|
lookbehind: true,
|
|
inside: {} // see below
|
|
},
|
|
'punctuation': /\*\*|__/
|
|
}
|
|
},
|
|
'italic': {
|
|
// *em*
|
|
// _em_
|
|
|
|
// allow one nested instance of bold text using the same delimiter
|
|
pattern: createInline(/\b_(?:(?!_)<inner>|__(?:(?!_)<inner>)+__)+_\b|\*(?:(?!\*)<inner>|\*\*(?:(?!\*)<inner>)+\*\*)+\*/.source),
|
|
lookbehind: true,
|
|
greedy: true,
|
|
inside: {
|
|
'content': {
|
|
pattern: /(^.)[\s\S]+(?=.$)/,
|
|
lookbehind: true,
|
|
inside: {} // see below
|
|
},
|
|
'punctuation': /[*_]/
|
|
}
|
|
},
|
|
'strike': {
|
|
// ~~strike through~~
|
|
// ~strike~
|
|
// eslint-disable-next-line regexp/strict
|
|
pattern: createInline(/(~~?)(?:(?!~)<inner>)+\2/.source),
|
|
lookbehind: true,
|
|
greedy: true,
|
|
inside: {
|
|
'content': {
|
|
pattern: /(^~~?)[\s\S]+(?=\1$)/,
|
|
lookbehind: true,
|
|
inside: {} // see below
|
|
},
|
|
'punctuation': /~~?/
|
|
}
|
|
},
|
|
'code-snippet': {
|
|
// `code`
|
|
// ``code``
|
|
pattern: /(^|[^\\`])(?:``[^`\r\n]+(?:`[^`\r\n]+)*``(?!`)|`[^`\r\n]+`(?!`))/,
|
|
lookbehind: true,
|
|
greedy: true,
|
|
alias: ['code', 'keyword']
|
|
},
|
|
'url': {
|
|
// [example](http://example.com "Optional title")
|
|
// [example][id]
|
|
// [example] [id]
|
|
pattern: createInline(/!?\[(?:(?!\])<inner>)+\](?:\([^\s)]+(?:[\t ]+"(?:\\.|[^"\\])*")?\)|[ \t]?\[(?:(?!\])<inner>)+\])/.source),
|
|
lookbehind: true,
|
|
greedy: true,
|
|
inside: {
|
|
'operator': /^!/,
|
|
'content': {
|
|
pattern: /(^\[)[^\]]+(?=\])/,
|
|
lookbehind: true,
|
|
inside: {} // see below
|
|
},
|
|
'variable': {
|
|
pattern: /(^\][ \t]?\[)[^\]]+(?=\]$)/,
|
|
lookbehind: true
|
|
},
|
|
'url': {
|
|
pattern: /(^\]\()[^\s)]+/,
|
|
lookbehind: true
|
|
},
|
|
'string': {
|
|
pattern: /(^[ \t]+)"(?:\\.|[^"\\])*"(?=\)$)/,
|
|
lookbehind: true
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
['url', 'bold', 'italic', 'strike'].forEach(function (token) {
|
|
['url', 'bold', 'italic', 'strike', 'code-snippet'].forEach(function (inside) {
|
|
if (token !== inside) {
|
|
Prism.languages.markdown[token].inside.content.inside[inside] = Prism.languages.markdown[inside];
|
|
}
|
|
});
|
|
});
|
|
|
|
Prism.hooks.add('after-tokenize', function (env) {
|
|
if (env.language !== 'markdown' && env.language !== 'md') {
|
|
return;
|
|
}
|
|
|
|
function walkTokens(tokens) {
|
|
if (!tokens || typeof tokens === 'string') {
|
|
return;
|
|
}
|
|
|
|
for (var i = 0, l = tokens.length; i < l; i++) {
|
|
var token = tokens[i];
|
|
|
|
if (token.type !== 'code') {
|
|
walkTokens(token.content);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Add the correct `language-xxxx` class to this code block. Keep in mind that the `code-language` token
|
|
* is optional. But the grammar is defined so that there is only one case we have to handle:
|
|
*
|
|
* token.content = [
|
|
* <span class="punctuation">```</span>,
|
|
* <span class="code-language">xxxx</span>,
|
|
* '\n', // exactly one new lines (\r or \n or \r\n)
|
|
* <span class="code-block">...</span>,
|
|
* '\n', // exactly one new lines again
|
|
* <span class="punctuation">```</span>
|
|
* ];
|
|
*/
|
|
|
|
var codeLang = token.content[1];
|
|
var codeBlock = token.content[3];
|
|
|
|
if (codeLang && codeBlock &&
|
|
codeLang.type === 'code-language' && codeBlock.type === 'code-block' &&
|
|
typeof codeLang.content === 'string') {
|
|
|
|
// this might be a language that Prism does not support
|
|
|
|
// do some replacements to support C++, C#, and F#
|
|
var lang = codeLang.content.replace(/\b#/g, 'sharp').replace(/\b\+\+/g, 'pp');
|
|
// only use the first word
|
|
lang = (/[a-z][\w-]*/i.exec(lang) || [''])[0].toLowerCase();
|
|
var alias = 'language-' + lang;
|
|
|
|
// add alias
|
|
if (!codeBlock.alias) {
|
|
codeBlock.alias = [alias];
|
|
} else if (typeof codeBlock.alias === 'string') {
|
|
codeBlock.alias = [codeBlock.alias, alias];
|
|
} else {
|
|
codeBlock.alias.push(alias);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
walkTokens(env.tokens);
|
|
});
|
|
|
|
Prism.hooks.add('wrap', function (env) {
|
|
if (env.type !== 'code-block') {
|
|
return;
|
|
}
|
|
|
|
var codeLang = '';
|
|
for (var i = 0, l = env.classes.length; i < l; i++) {
|
|
var cls = env.classes[i];
|
|
var match = /language-(.+)/.exec(cls);
|
|
if (match) {
|
|
codeLang = match[1];
|
|
break;
|
|
}
|
|
}
|
|
|
|
var grammar = Prism.languages[codeLang];
|
|
|
|
if (!grammar) {
|
|
if (codeLang && codeLang !== 'none' && Prism.plugins.autoloader) {
|
|
var id = 'md-' + new Date().valueOf() + '-' + Math.floor(Math.random() * 1e16);
|
|
env.attributes['id'] = id;
|
|
|
|
Prism.plugins.autoloader.loadLanguages(codeLang, function () {
|
|
var ele = document.getElementById(id);
|
|
if (ele) {
|
|
ele.innerHTML = Prism.highlight(ele.textContent, Prism.languages[codeLang], codeLang);
|
|
}
|
|
});
|
|
}
|
|
} else {
|
|
env.content = Prism.highlight(textContent(env.content), grammar, codeLang);
|
|
}
|
|
});
|
|
|
|
var tagPattern = RegExp(Prism.languages.markup.tag.pattern.source, 'gi');
|
|
|
|
/**
|
|
* A list of known entity names.
|
|
*
|
|
* This will always be incomplete to save space. The current list is the one used by lowdash's unescape function.
|
|
*
|
|
* @see {@link https://github.com/lodash/lodash/blob/2da024c3b4f9947a48517639de7560457cd4ec6c/unescape.js#L2}
|
|
*/
|
|
var KNOWN_ENTITY_NAMES = {
|
|
'amp': '&',
|
|
'lt': '<',
|
|
'gt': '>',
|
|
'quot': '"',
|
|
};
|
|
|
|
// IE 11 doesn't support `String.fromCodePoint`
|
|
var fromCodePoint = String.fromCodePoint || String.fromCharCode;
|
|
|
|
/**
|
|
* Returns the text content of a given HTML source code string.
|
|
*
|
|
* @param {string} html
|
|
* @returns {string}
|
|
*/
|
|
function textContent(html) {
|
|
// remove all tags
|
|
var text = html.replace(tagPattern, '');
|
|
|
|
// decode known entities
|
|
text = text.replace(/&(\w{1,8}|#x?[\da-f]{1,8});/gi, function (m, code) {
|
|
code = code.toLowerCase();
|
|
|
|
if (code[0] === '#') {
|
|
var value;
|
|
if (code[1] === 'x') {
|
|
value = parseInt(code.slice(2), 16);
|
|
} else {
|
|
value = Number(code.slice(1));
|
|
}
|
|
|
|
return fromCodePoint(value);
|
|
} else {
|
|
var known = KNOWN_ENTITY_NAMES[code];
|
|
if (known) {
|
|
return known;
|
|
}
|
|
|
|
// unable to decode
|
|
return m;
|
|
}
|
|
});
|
|
|
|
return text;
|
|
}
|
|
|
|
Prism.languages.md = Prism.languages.markdown;
|
|
|
|
}(Prism));
|