GZ/nwyj/WebContent/admin/scripts/dojo/dojox/encoding/tests/lzw.js

if (!dojo._hasResource["dojox.encoding.tests.lzw"]) { // _hasResource checks
														// added by build. Do
														// not use _hasResource
														// directly in your
														// code.
	dojo._hasResource["dojox.encoding.tests.lzw"] = true;
	dojo.provide("dojox.encoding.tests.lzw");
	dojo.require("dojox.encoding.lzw");
	dojo.require("dojox.encoding.bits");

	(function() {
		var msg1 = "The rain in Spain falls mainly on the plain.";
		var msg2 = "The rain in Spain falls mainly on the plain.1";
		var msg3 = "The rain in Spain falls mainly on the plain.ab";
		var msg4 = "The rain in Spain falls mainly on the plain.!@#";
		var dc = dojox.encoding, dcb = dc.bits, dcl = dc.lzw;

		var s2b = function(s) {
			var b = [];
			for (var i = 0; i < s.length; ++i) {
				b.push(s.charCodeAt(i));
			}
			return b;
		};

		var b2s = function(b) {
			var s = [];
			dojo.forEach(b, function(c) {
						s.push(String.fromCharCode(c));
					});
			return s.join("");
		};

		var encode = function(msg) {
			var x = new dcb.OutputStream(), encoder = new dcl.Encoder(128);
			dojo.forEach(s2b(msg), function(v) {
						encoder.encode(v, x);
					});
			encoder.flush(x);
			console.debug("bits =", x.getWidth());
			return x.getBuffer();
		};

		var decode = function(n, buf) {
			var x = new dcb.InputStream(buf, buf.length * 8), decoder = new dcl.Decoder(128), t = [], w = 0;
			while (w < n) {
				var v = decoder.decode(x);
				t.push(v);
				w += v.length;
			}
			return t.join("");
		};

		tests.register("dojox.encoding.tests.lzw", [function testLzwMsg1(t) {
							t.assertEqual(msg1, decode(msg1.length,
											encode(msg1)));
						}, function testLzwMsg2(t) {
							t.assertEqual(msg2, decode(msg2.length,
											encode(msg2)));
						}, function testLzwMsg3(t) {
							t.assertEqual(msg3, decode(msg3.length,
											encode(msg3)));
						}, function testLzwMsg4(t) {
							t.assertEqual(msg4, decode(msg4.length,
											encode(msg4)));
						}]);
	})();

}