| 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 url = /\b([a-z]{3,7}:\/\/|tel:)[\w\-+%~/.:=&!$'()*,;@]+(?:\?[\w\-+%~/.:=?&!$'()*,;@]*)?(?:#[\w\-+%~/.:#=?&!$'()*,;@]*)?/;
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| 8 | var email = /\b\S+@[\w.]+[a-z]{2}/;
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| 9 | var linkMd = /\[([^\]]+)\]\(([^)]+)\)/;
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| 10 |
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| 11 | // Tokens that may contain URLs and emails
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| 12 | var candidates = ['comment', 'url', 'attr-value', 'string'];
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| 13 |
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| 14 | Prism.plugins.autolinker = {
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| 15 | processGrammar: function (grammar) {
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| 16 | // Abort if grammar has already been processed
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| 17 | if (!grammar || grammar['url-link']) {
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| 18 | return;
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| 19 | }
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| 20 | Prism.languages.DFS(grammar, function (key, def, type) {
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| 21 | if (candidates.indexOf(type) > -1 && !Array.isArray(def)) {
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| 22 | if (!def.pattern) {
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| 23 | def = this[key] = {
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| 24 | pattern: def
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| 25 | };
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| 26 | }
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| 27 |
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| 28 | def.inside = def.inside || {};
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| 29 |
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| 30 | if (type == 'comment') {
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| 31 | def.inside['md-link'] = linkMd;
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| 32 | }
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| 33 | if (type == 'attr-value') {
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| 34 | Prism.languages.insertBefore('inside', 'punctuation', { 'url-link': url }, def);
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| 35 | } else {
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| 36 | def.inside['url-link'] = url;
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| 37 | }
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| 38 |
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| 39 | def.inside['email-link'] = email;
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| 40 | }
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| 41 | });
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| 42 | grammar['url-link'] = url;
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| 43 | grammar['email-link'] = email;
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| 44 | }
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| 45 | };
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| 46 |
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| 47 | Prism.hooks.add('before-highlight', function (env) {
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| 48 | Prism.plugins.autolinker.processGrammar(env.grammar);
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| 49 | });
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| 50 |
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| 51 | Prism.hooks.add('wrap', function (env) {
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| 52 | if (/-link$/.test(env.type)) {
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| 53 | env.tag = 'a';
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| 54 |
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| 55 | var href = env.content;
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| 56 |
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| 57 | if (env.type == 'email-link' && href.indexOf('mailto:') != 0) {
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| 58 | href = 'mailto:' + href;
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| 59 | } else if (env.type == 'md-link') {
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| 60 | // Markdown
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| 61 | var match = env.content.match(linkMd);
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| 62 |
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| 63 | href = match[2];
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| 64 | env.content = match[1];
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| 65 | }
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| 66 |
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| 67 | env.attributes.href = href;
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| 68 |
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| 69 | // Silently catch any error thrown by decodeURIComponent (#1186)
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| 70 | try {
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| 71 | env.content = decodeURIComponent(env.content);
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| 72 | } catch (e) { /* noop */ }
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| 73 | }
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| 74 | });
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| 75 |
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| 76 | }());
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