65 lines
1.3 KiB
JavaScript
65 lines
1.3 KiB
JavaScript
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(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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