From 14d54b19eeb61e3f81c345376aec782b63dadab8 Mon Sep 17 00:00:00 2001
From: Miroslav Bajtos <miroslav@strongloop.com>
Date: Thu, 12 Sep 2013 11:06:30 +0100
Subject: [PATCH] NetworkAgent: support data scheme URLs

Implemented support for data scheme URLs. This allows sourcemap files to be
embedded in the sourceMappingURL in the generated js file.
---
 lib/NetworkAgent.js  | 31 ++++++++++++++++++++++++-------
 package.json         |  3 ++-
 test/NetworkAgent.js | 21 +++++++++++++++++++++
 3 files changed, 47 insertions(+), 8 deletions(-)
 create mode 100644 test/NetworkAgent.js

diff --git a/lib/NetworkAgent.js b/lib/NetworkAgent.js
index 6a08bd9a..14e108b3 100644
--- a/lib/NetworkAgent.js
+++ b/lib/NetworkAgent.js
@@ -1,11 +1,28 @@
 var fs = require('fs');
 var path = require('path');
+var dataUri = require('strong-data-uri');
 
 function NetworkAgent() {
 }
 
 NetworkAgent.prototype.loadResourceForFrontend = function(params, done) {
-  var uri
+  if (/^data:/.test(params.url)) {
+    try {
+      done(null, {
+        statusCode: 200,
+        headers: {},
+        content: dataUri.decode(params.url).toString('ascii')
+      });
+    } catch (err) {
+      done(err);
+    }
+    return;
+  }
+
+  loadFileResource(params, done);
+}
+
+function loadFileResource(params, done) {
   var match = params.url.match(/^file:\/\/(.*)$/);
   if (!match) {
     return done(
@@ -16,13 +33,13 @@ NetworkAgent.prototype.loadResourceForFrontend = function(params, done) {
   var filePath = match[1];
 
   if (process.platform == 'win32') {
-   // On Windows, we should receive '/C:/path/to/file'.
-   if (!/^\/[a-zA-Z]:\//.test(filePath)) {
-     return done('Invalid windows path: ' + filePath);
-   }
+    // On Windows, we should receive '/C:/path/to/file'.
+    if (!/^\/[a-zA-Z]:\//.test(filePath)) {
+      return done('Invalid windows path: ' + filePath);
+    }
 
-   // Remove leading '/' and replace all other '/' with '\'
-   filePath = filePath.slice(1).split('/').join(path.sep);
+    // Remove leading '/' and replace all other '/' with '\'
+    filePath = filePath.slice(1).split('/').join(path.sep);
   }
 
   // ensure there are no ".." in the path
diff --git a/package.json b/package.json
index 3a69b19d..40825f73 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,8 @@
     "express": "~3.4",
     "async": "~0.2.8",
     "glob": "~3.2.1",
-    "rc": "~0.3.0"
+    "rc": "~0.3.0",
+    "strong-data-uri": "~0.1.0"
   },
   "devDependencies": {
     "mocha": "latest",
diff --git a/test/NetworkAgent.js b/test/NetworkAgent.js
new file mode 100644
index 00000000..c69804a4
--- /dev/null
+++ b/test/NetworkAgent.js
@@ -0,0 +1,21 @@
+var expect = require('chai').expect,
+    NetworkAgent = require('../lib/NetworkAgent.js').NetworkAgent;
+
+describe('NetworkAgent', function() {
+  describe('loadResourceForFrontend', function() {
+    it('should load data URLs', function(done) {
+      var agent = new NetworkAgent();
+      agent.loadResourceForFrontend(
+        {
+          url: 'data:text/plain;base64,aGVsbG8gd29ybGQ='
+        },
+        function(err, result) {
+          if (err) return done(err);
+          expect(result.content).to.equal('hello world');
+          done();
+        }
+      );
+    });
+  });
+})
+