1 files changed, 43 insertions, 3 deletions
diff --git a/packages/gitbook-plugin-highlight/src/CodeBlock.js b/packages/gitbook-plugin-highlight/src/CodeBlock.js
index f55524f..89f6793 100644
--- a/packages/gitbook-plugin-highlight/src/CodeBlock.js
+++ b/packages/gitbook-plugin-highlight/src/CodeBlock.js
@@ -1,14 +1,54 @@
+const hljs = require('highlight.js');
 const GitBook = require('gitbook-core');
 const { React } = GitBook;
 
+const getLanguage = require('./getLanguage');
+
+/**
+ * Get children as text
+ * @param {React.Children} children
+ * @return {String}
+ */
+function getChildrenToText(children) {
+    return React.Children.map(children, child => {
+        if (typeof child === 'string') {
+            return child;
+        } else {
+            return child.props.children ?
+                getChildrenToText(child.props.children) : '';
+        }
+    }).join('');
+}
+
 const CodeBlock = React.createClass({
     propTypes: {
-        children: React.PropTypes.children
+        children:  React.PropTypes.node,
+        className: React.PropTypes.string
     },
 
     render() {
-        const { children } = this.props;
-        return <span />;
+        const { children, className } = this.props;
+        const content = getChildrenToText(children);
+        const lang = getLanguage(className);
+
+        const includeCSS = <GitBook.ImportCSS href="gitbook/highlight/white.css" />;
+
+        try {
+            const html = hljs.highlight(lang, content).value;
+            return (
+                <code>
+                    {includeCSS}
+                    <span dangerouslySetInnerHTML={{__html: html}} />
+                </code>
+            );
+        } catch (e) {
+            return (
+                <code>
+                    {includeCSS}
+                    {content}
+                </code>
+            );
+        }
     }
 });