chg: replaced ant with gradle

modules/jala/code/Captcha.js

@@ -0,0 +1,119 @@
+//
+// Jala Project [http://opensvn.csie.org/traccgi/jala]
+//
+// Copyright 2004 ORF Online und Teletext GmbH
+//
+// Licensed under the Apache License, Version 2.0 (the ``License'');
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an ``AS IS'' BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// $Revision$
+// $LastChangedBy$
+// $LastChangedDate$
+// $HeadURL$
+//
+
+
+/**
+ * @fileoverview Fields and methods of the jala.Captcha class.
+ */
+
+
+// Define the global namespace for Jala modules
+if (!global.jala) {
+   global.jala = {};
+}
+
+/** 
+ * Construct a new captcha.
+ * @returns A new captcha.
+ * @class Wrapper class for the 
+ * {@link http://jcaptcha.sourceforge.net/ JCaptcha library}.
+ * A captcha (an acronym for "completely automated public 
+ * Turing test to tell computers and humans apart") is a 
+ * type of challenge-response test used in computing to 
+ * determine whether or not the user is human.
+ * @constructor
+ */
+jala.Captcha = function() {
+   /**
+    * Jala dependencies
+    */
+   app.addRepository(getProperty("jala.dir", "modules/jala") + 
+                     "/lib/jcaptcha-all-1.0-RC3.jar");
+
+   var gimpy;
+
+   try {
+      var ref = Packages.com.octo.captcha.engine.image.gimpy;
+      gimpy = ref.DefaultGimpyEngine();
+   } catch(e) {
+      throw("Cannot instantiate object due to missing java class: " +
+            arguments.callee.toString());
+   }
+   var captcha = gimpy.getNextCaptcha();
+
+   /**
+    * Get a new captcha object.
+    * @returns A new captcha object.
+    * @type com.octo.captcha.Captcha
+    */
+   this.getCaptcha = function getCaptcha() {
+      return captcha;
+   };
+
+   /**
+    * Render a new captcha image.
+    */
+   this.renderImage = function renderImage() {
+      var image = captcha.getImageChallenge();
+      var stream = new java.io.ByteArrayOutputStream();
+      var ref = Packages.com.sun.image.codec.jpeg.JPEGCodec;
+      var encoder = ref.createJPEGEncoder(stream);
+      encoder.encode(image);
+      res.contentType = "image/jpeg";
+      res.writeBinary(stream.toByteArray());
+      return;
+   };
+
+   /**
+    * Validate a user's input with the prompted captcha.
+    * @param {String} input The user's input.
+    * @returns True if the user's input matches the captcha.
+    * @type Boolean
+    */
+   this.validate = function validate(input) {
+      return !input || captcha.validateResponse(input);
+   };
+
+   return this;
+};
+
+
+/**
+ * Get a string representation of the captcha class.
+ * @returns A string representation of the capthca class.
+ * @type String
+ * @ignore
+ */
+jala.Captcha.toString = function toString() {
+   return "[jala.Captcha http://jcaptcha.sourceforge.net]";
+};
+
+
+/**
+ * Get a string representation of the captcha object.
+ * @returns A string representation of the captcha object.
+ * @type String
+ */
+jala.Captcha.prototype.toString = function toString() {
+   return "[jala.Captcha Object]";
+};