Changes needed to make headless work.

.gitignore

@@ -5,3 +5,4 @@ npm-debug.log
 .project
 *.pyc
 *.komodoproject
+node_modules

app.headless.js

@@ -0,0 +1,29 @@
+// This program is to be used with NodeJS run Blockly headless. It loads 
+// Blockly XML from `input.xml` and outputs python code on `stdout`.
+
+global.DOMParser = require('xmldom').DOMParser;
+
+global.Blockly = require('./blockly_uncompressed.js');
+
+require('./blocks_compressed.js');
+require('./python_compressed.js');
+
+var fs = require('fs');
+
+//the contents of './input.xml' are passed as the `data` parameter
+fs.readFile('./input.xml', function (err, data) {
+	if (err) throw err;
+
+	var xmlText = data.toString(); //convert the data buffer to a string
+	try {
+		var xml = Blockly.Xml.textToDom(xmlText);
+	} catch (e) {
+		console.log(e);
+	return;
+	}
+	// Create a headless workspace.
+	var workspace = new Blockly.Workspace();
+	Blockly.Xml.domToWorkspace(workspace, xml);
+	var code = Blockly.Python.workspaceToCode(workspace);
+	console.log(code);
+});

build.py

@@ -103,30 +103,43 @@ class Gen_uncompressed(threading.Thread):
     f = open(target_filename, "w")
     f.write(HEADER)
     f.write("""
-// 'this' is 'window' in a browser, or 'global' in node.js.
-this.BLOCKLY_DIR = (function() {
-  // Find name of current directory.
-  var scripts = document.getElementsByTagName('script');
-  var re = new RegExp('(.+)[\/]blockly_uncompressed\.js$');
-  for (var x = 0, script; script = scripts[x]; x++) {
-    var match = re.exec(script.src);
-    if (match) {
-      return match[1];
+var isNodeJS = !!(typeof module !== 'undefined' && module.exports);
+
+if (isNodeJS) {
+  var window = {};
+  require('../closure-library/closure/goog/bootstrap/nodejs')
+}
+
+window.BLOCKLY_DIR = (function() {
+  if (!isNodeJS)
+  {
+    // Find name of current directory.
+    var scripts = document.getElementsByTagName('script');
+    var re = new RegExp('(.+)[\/]blockly_uncompressed\.js$');
+    for (var x = 0, script; script = scripts[x]; x++) {
+      var match = re.exec(script.src);
+      if (match) {
+        return match[1];
+      }
     }
+    alert('Could not detect Blockly\\'s directory name.');
   }
-  alert('Could not detect Blockly\\'s directory name.');
   return '';
 })();
 
-this.BLOCKLY_BOOT = function() {
-// Execute after Closure has loaded.
-if (!this.goog) {
-  alert('Error: Closure not found.  Read this:\\n' +
-        'developers.google.com/blockly/hacking/closure');
-}
-
-// Build map of all dependencies (used and unused).
-var dir = this.BLOCKLY_DIR.match(/[^\\/]+$/)[0];
+window.BLOCKLY_BOOT = function() {
+  var dir = '';
+  if (isNodeJS) {
+    require('../closure-library/closure/goog/bootstrap/nodejs')
+    dir = 'blockly';
+  } else {
+    // Execute after Closure has loaded.
+    if (!window.goog) {
+      alert('Error: Closure not found.  Read this:\\n' +
+            'developers.google.com/blockly/hacking/closure');
+    }
+    dir = window.BLOCKLY_DIR.match(/[^\\/]+$/)[0];
+  }
 """)
     f.write(add_dependency + "\n")
     f.write("\n")
@@ -139,17 +152,17 @@ delete this.BLOCKLY_DIR;
 delete this.BLOCKLY_BOOT;
 };
 
-if (typeof DOMParser == 'undefined' && typeof require == 'function') {
-  // Node.js needs DOMParser loaded separately.
-  var DOMParser = require('xmldom').DOMParser;
+if (isNodeJS) {
+  window.BLOCKLY_BOOT()
+  module.exports = Blockly;
+} else {
+  // Delete any existing Closure (e.g. Soy's nogoog_shim).
+  document.write('<script>var goog = undefined;</script>');
+  // Load fresh Closure Library.
+  document.write('<script src="' + window.BLOCKLY_DIR +
+      '/../closure-library/closure/goog/base.js"></script>');
+  document.write('<script>window.BLOCKLY_BOOT()</script>');
 }
-
-// Delete any existing Closure (e.g. Soy's nogoog_shim).
-document.write('<script>var goog = undefined;</script>');
-// Load fresh Closure Library.
-document.write('<script src="' + this.BLOCKLY_DIR +
-    '/../closure-library/closure/goog/base.js"></script>');
-document.write('<script>this.BLOCKLY_BOOT()</script>');
 """)
     f.close()
     print("SUCCESS: " + target_filename)

input.xml

@@ -0,0 +1,5 @@
+<xml xmlns="http://www.w3.org/1999/xhtml">
+  <block type="colour_picker" id="11" x="93" y="12">
+    <field name="COLOUR">#ff0000</field>
+  </block>
+</xml>

readme.headless.md

@@ -0,0 +1,16 @@
+# Blockly Headless
+
+Running Blockly headless is valuable to allow for server side code generation.
+
+The NodeJS program `app.headless.js` loads Blockly XML from `input.xml` and outputs python code on `stdout`.
+
+### Prerequisites
+Be sure to have these installed on your system:
+- NodeJS -- http://nodejs.org/
+- NPM -- (Bundled with NodeJS)
+- closure-library -- http://developers.google.com/blockly/hacking/closure
+
+## Getting Started
+1. run `npm install` in the blockly root directory(in the same location as the package.json).
+2. run `./build.py` to update the compressed files, as `build.py` **has changed**.
+3. run `node app.headless.js`