| 1 | (function () {
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| 2 |
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| 3 | if (typeof Prism === 'undefined') {
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| 4 | return;
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| 5 | }
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| 6 |
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| 7 | var autoLinkerProcess = function (grammar) {
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| 8 | if (Prism.plugins.autolinker) {
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| 9 | Prism.plugins.autolinker.processGrammar(grammar);
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| 10 | }
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| 11 | return grammar;
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| 12 | };
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| 13 | var dataURI = {
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| 14 | pattern: /(.)\bdata:[^\/]+\/[^,]+,(?:(?!\1)[\s\S]|\\\1)+(?=\1)/,
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| 15 | lookbehind: true,
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| 16 | inside: {
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| 17 | 'language-css': {
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| 18 | pattern: /(data:[^\/]+\/(?:[^+,]+\+)?css,)[\s\S]+/,
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| 19 | lookbehind: true
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| 20 | },
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| 21 | 'language-javascript': {
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| 22 | pattern: /(data:[^\/]+\/(?:[^+,]+\+)?javascript,)[\s\S]+/,
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| 23 | lookbehind: true
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| 24 | },
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| 25 | 'language-json': {
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| 26 | pattern: /(data:[^\/]+\/(?:[^+,]+\+)?json,)[\s\S]+/,
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| 27 | lookbehind: true
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| 28 | },
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| 29 | 'language-markup': {
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| 30 | pattern: /(data:[^\/]+\/(?:[^+,]+\+)?(?:html|xml),)[\s\S]+/,
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| 31 | lookbehind: true
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| 32 | }
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| 33 | }
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| 34 | };
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| 35 |
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| 36 | // Tokens that may contain URLs
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| 37 | var candidates = ['url', 'attr-value', 'string'];
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| 38 |
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| 39 | Prism.plugins.dataURIHighlight = {
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| 40 | processGrammar: function (grammar) {
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| 41 | // Abort if grammar has already been processed
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| 42 | if (!grammar || grammar['data-uri']) {
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| 43 | return;
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| 44 | }
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| 45 |
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| 46 | Prism.languages.DFS(grammar, function (key, def, type) {
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| 47 | if (candidates.indexOf(type) > -1 && !Array.isArray(def)) {
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| 48 | if (!def.pattern) {
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| 49 | def = this[key] = {
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| 50 | pattern: def
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| 51 | };
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| 52 | }
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| 53 |
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| 54 | def.inside = def.inside || {};
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| 55 |
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| 56 | if (type == 'attr-value') {
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| 57 | Prism.languages.insertBefore('inside', def.inside['url-link'] ? 'url-link' : 'punctuation', {
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| 58 | 'data-uri': dataURI
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| 59 | }, def);
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| 60 | } else {
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| 61 | if (def.inside['url-link']) {
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| 62 | Prism.languages.insertBefore('inside', 'url-link', {
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| 63 | 'data-uri': dataURI
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| 64 | }, def);
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| 65 | } else {
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| 66 | def.inside['data-uri'] = dataURI;
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| 67 | }
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| 68 | }
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| 69 | }
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| 70 | });
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| 71 | grammar['data-uri'] = dataURI;
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| 72 | }
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| 73 | };
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| 74 |
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| 75 | Prism.hooks.add('before-highlight', function (env) {
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| 76 | // Prepare the needed grammars for this code block
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| 77 | if (dataURI.pattern.test(env.code)) {
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| 78 | for (var p in dataURI.inside) {
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| 79 | if (dataURI.inside.hasOwnProperty(p)) {
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| 80 | if (!dataURI.inside[p].inside && dataURI.inside[p].pattern.test(env.code)) {
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| 81 | var lang = p.match(/^language-(.+)/)[1];
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| 82 | if (Prism.languages[lang]) {
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| 83 | dataURI.inside[p].inside = {
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| 84 | rest: autoLinkerProcess(Prism.languages[lang])
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| 85 | };
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| 86 | }
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| 87 | }
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| 88 | }
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| 89 | }
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| 90 | }
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| 91 |
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| 92 | Prism.plugins.dataURIHighlight.processGrammar(env.grammar);
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| 93 | });
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| 94 | }());
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