Resolve relative links to GitHub repo, fixes #6

Useful for linking to blobs and other files …

1 files changed, 16 insertions, 2 deletions

diff --git a/lib/parse/renderer.js b/lib/parse/renderer.js
index 4b5c945..64c5602 100644
--- a/lib/parse/renderer.js
+++ b/lib/parse/renderer.js
@@ -1,14 +1,18 @@
 var url = require('url');
 var inherits = require('util').inherits;
 
+var path = require('path');
+
 var marked = require('marked');
 
 
-function GitBookRenderer(options) {
+function GitBookRenderer(options, extra_options) {
     if(!(this instanceof GitBookRenderer)) {
-        return new GitBookRenderer(options);
+        return new GitBookRenderer(options, extra_options);
     }
     GitBookRenderer.super_.call(this, options);
+
+    this._extra_options = extra_options;
 }
 inherits(GitBookRenderer, marked.Renderer);
 
@@ -39,6 +43,16 @@ GitBookRenderer.prototype.link = function(href, title, text) {
     // Parsed version of the url
     var parsed = url.parse(href);
 
+    var o = this._extra_options;
+    // Relative link, rewrite it to point to github repo
+    if(parsed.path[0] != '/' && o && o.repo && o.dir) {
+        href = 'https://github.com/' + o.repo + '/blob' + path.normalize(path.join(
+            '/',
+            o.dir,
+            href
+        ));
+        parsed = url.parse(href);
+    }
 
     // Generate HTML for link
     var out = '<a href="' + href + '"';