highlight code in markdown blocks

web/react/utils/markdown.jsx

@@ -6,6 +6,32 @@ const Utils = require('./utils.jsx');
 
 const marked = require('marked');
 
+const highlightJs = require('highlight.js/lib/highlight.js');
+const highlightJsDiff = require('highlight.js/lib/languages/diff.js');
+const highlightJsApache = require('highlight.js/lib/languages/apache.js');
+const highlightJsMakefile = require('highlight.js/lib/languages/makefile.js');
+const highlightJsHttp = require('highlight.js/lib/languages/http.js');
+const highlightJsJson = require('highlight.js/lib/languages/json.js');
+const highlightJsMarkdown = require('highlight.js/lib/languages/markdown.js');
+const highlightJsJavascript = require('highlight.js/lib/languages/javascript.js');
+const highlightJsCss = require('highlight.js/lib/languages/css.js');
+const highlightJsNginx = require('highlight.js/lib/languages/nginx.js');
+const highlightJsObjectivec = require('highlight.js/lib/languages/objectivec.js');
+const highlightJsPython = require('highlight.js/lib/languages/python.js');
+const highlightJsXml = require('highlight.js/lib/languages/xml.js');
+const highlightJsPerl = require('highlight.js/lib/languages/perl.js');
+const highlightJsBash = require('highlight.js/lib/languages/bash.js');
+const highlightJsPhp = require('highlight.js/lib/languages/php.js');
+const highlightJsCoffeescript = require('highlight.js/lib/languages/coffeescript.js');
+const highlightJsCs = require('highlight.js/lib/languages/cs.js');
+const highlightJsCpp = require('highlight.js/lib/languages/cpp.js');
+const highlightJsSql = require('highlight.js/lib/languages/sql.js');
+const highlightJsGo = require('highlight.js/lib/languages/go.js');
+const highlightJsRuby = require('highlight.js/lib/languages/ruby.js');
+
+const Constants = require('../utils/constants.jsx');
+const HighlightedLanguages = Constants.HighlightedLanguages;
+
 class MattermostInlineLexer extends marked.InlineLexer {
     constructor(links, options) {
         super(links, options);
@@ -51,6 +77,41 @@ class MattermostMarkdownRenderer extends marked.Renderer {
         this.text = this.text.bind(this);
 
         this.formattingOptions = formattingOptions;
+
+        highlightJs.registerLanguage('diff', highlightJsDiff);
+        highlightJs.registerLanguage('apache', highlightJsApache);
+        highlightJs.registerLanguage('makefile', highlightJsMakefile);
+        highlightJs.registerLanguage('http', highlightJsHttp);
+        highlightJs.registerLanguage('json', highlightJsJson);
+        highlightJs.registerLanguage('markdown', highlightJsMarkdown);
+        highlightJs.registerLanguage('javascript', highlightJsJavascript);
+        highlightJs.registerLanguage('css', highlightJsCss);
+        highlightJs.registerLanguage('nginx', highlightJsNginx);
+        highlightJs.registerLanguage('objectivec', highlightJsObjectivec);
+        highlightJs.registerLanguage('python', highlightJsPython);
+        highlightJs.registerLanguage('xml', highlightJsXml);
+        highlightJs.registerLanguage('perl', highlightJsPerl);
+        highlightJs.registerLanguage('bash', highlightJsBash);
+        highlightJs.registerLanguage('php', highlightJsPhp);
+        highlightJs.registerLanguage('coffeescript', highlightJsCoffeescript);
+        highlightJs.registerLanguage('cs', highlightJsCs);
+        highlightJs.registerLanguage('cpp', highlightJsCpp);
+        highlightJs.registerLanguage('sql', highlightJsSql);
+        highlightJs.registerLanguage('go', highlightJsGo);
+        highlightJs.registerLanguage('ruby', highlightJsRuby);
+    }
+
+    code(code, language) {
+        if (!language || highlightJs.listLanguages().indexOf(language) < 0) {
+            let parsed = super.code(code, language);
+            return '<code class="hljs">' + parsed.substr(11, parsed.length - 17);
+        }
+
+        let parsed = highlightJs.highlight(language, code);
+        return '<div class="post-body--code">' +
+            '<span class="post-body--code__language">' + HighlightedLanguages[language] + '</span>' +
+            '<code style="white-space: pre;" class="hljs">' + parsed.value + '</code>' +
+            '</div>';
     }
 
     br() {