[pbxProject] generateUuid function

Author: alunny

lib/pbxProject.js

@@ -1,6 +1,7 @@
 var util = require('util'),
     EventEmitter = require('events').EventEmitter,
     path = require('path'),
+    uuid = require('node-uuid'),
     fork = require('child_process').fork,
     pbxWriter = require('./pbxWriter')
 
@@ -51,4 +52,17 @@ pbxProject.prototype.allUuids = function () {
     return uuids;
 }
 
+pbxProject.prototype.generateUuid = function () {
+    var id = uuid.v4()
+                .replace(/-/g,'')
+                .substr(0,24)
+                .toUpperCase()
+
+    if (this.allUuids().indexOf(id) >= 0) {
+        return this.generateUuid();
+    } else {
+        return id;
+    }
+}
+
 module.exports = pbxProject;

test/pbxProject.js

@@ -55,3 +55,27 @@ exports['allUuids function'] = {
        test.done();
    }
 }
+
+exports['generateUuid function'] = {
+    'should return a 24 character string': function (test) {
+       var project = new pbx('.'),
+           newUUID;
+
+       project.hash = buildConfig;
+       newUUID = project.generateUuid();
+
+       test.equal(newUUID.length, 24);
+       test.done();
+    },
+    'should be an uppercase hex string': function (test) {
+       var project = new pbx('.'),
+           uHex = /^[A-F0-9]{24}$/,
+           newUUID;
+
+       project.hash = buildConfig;
+       newUUID = project.generateUuid();
+
+       test.ok(uHex.test(newUUID));
+       test.done();
+    }
+}