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64 lines
1.3 KiB
64 lines
1.3 KiB
(function (Prism) { |
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Prism.languages.diff = { |
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'coord': [ |
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// Match all kinds of coord lines (prefixed by "+++", "---" or "***"). |
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/^(?:\*{3}|-{3}|\+{3}).*$/m, |
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// Match "@@ ... @@" coord lines in unified diff. |
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/^@@.*@@$/m, |
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// Match coord lines in normal diff (starts with a number). |
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/^\d.*$/m |
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] |
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// deleted, inserted, unchanged, diff |
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}; |
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/** |
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* A map from the name of a block to its line prefix. |
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* |
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* @type {Object<string, string>} |
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*/ |
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var PREFIXES = { |
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'deleted-sign': '-', |
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'deleted-arrow': '<', |
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'inserted-sign': '+', |
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'inserted-arrow': '>', |
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'unchanged': ' ', |
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'diff': '!', |
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}; |
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// add a token for each prefix |
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Object.keys(PREFIXES).forEach(function (name) { |
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var prefix = PREFIXES[name]; |
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var alias = []; |
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if (!/^\w+$/.test(name)) { // "deleted-sign" -> "deleted" |
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alias.push(/\w+/.exec(name)[0]); |
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} |
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if (name === 'diff') { |
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alias.push('bold'); |
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} |
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Prism.languages.diff[name] = { |
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pattern: RegExp('^(?:[' + prefix + '].*(?:\r\n?|\n|(?![\\s\\S])))+', 'm'), |
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alias: alias, |
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inside: { |
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'line': { |
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pattern: /(.)(?=[\s\S]).*(?:\r\n?|\n)?/, |
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lookbehind: true |
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}, |
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'prefix': { |
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pattern: /[\s\S]/, |
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alias: /\w+/.exec(name)[0] |
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} |
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} |
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}; |
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}); |
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// make prefixes available to Diff plugin |
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Object.defineProperty(Prism.languages.diff, 'PREFIXES', { |
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value: PREFIXES |
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}); |
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}(Prism));
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