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 |
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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 |
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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 |
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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 |
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70 | try {
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71 | env.content = decodeURIComponent(env.content);
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72 | } catch (e) { }
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73 | }
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74 | });
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75 |
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76 | }());
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