--- /dev/null
+<html>
+ <head>
+ <title>Compress colors</title>
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+ <style type="text/css">
+ @import "../../../../dojo/resources/dojo.css";
+ @import "../../../../dijit/tests/css/dijitTests.css";
+
+ .pane { margin-top: 2em; }
+ </style>
+ <script type="text/javascript" src="../../../../dojo/dojo.js" djConfig="isDebug: true"></script>
+ <script type="text/javascript">
+ dojo.require("dojox.encoding.tests.compression.colors");
+ dojo.require("dojox.encoding.ascii85");
+ dojo.require("dojox.encoding.bits");
+ dojo.require("dojox.encoding.compression.splay");
+ dojo.require("dojox.encoding.compression.lzw");
+
+ var dc = dojox.encoding, dcc = dc.compression, colors = dc.tests.compression.colors;
+
+ var run = function(){
+ var empty = {}, names = [];
+ for(var i in colors){
+ if(i in empty){ continue; }
+ names.push(i);
+ }
+ names.sort();
+ var output = new dc.bits.OutputStream(), result = [];
+ // encode names
+ var s = names.join("{"), encoder = new dcc.lzw.Encoder(27);
+ result.push("<div>Input is " + s.length + " bytes long.</div>");
+ result.push("<div>Input: " + s + ".</div>");
+ for(var i = 0; i < s.length; ++i){
+ var v = s.charCodeAt(i) - 97;
+ if(v < 0 || v > 26) console.debug("error!", v);
+ encoder.encode(v, output);
+ }
+ encoder.flush(output);
+ var w = output.getWidth();
+ result.push("<div>Output is " + Math.ceil(w / 8) + " bytes (" + w + " bits) long.</div>");
+ var buf = output.getBuffer();
+ {
+ var input = new dc.bits.InputStream(buf, buf.length * 8), decoder = new dcc.lzw.Decoder(27);
+ var t = [];
+ for(var w = 0; w < s.length;){
+ var v = decoder.decode(input);
+ t.push(v);
+ w += v.length;
+ }
+ t = t.join("");
+ var p = [];
+ for(var i = 0; i < t.length; ++i){
+ p.push(String.fromCharCode(t.charCodeAt(i) + 97));
+ }
+ p = p.join("");
+ result.push("<div>Control: " + p + ".</div>");
+ }
+ while(buf.length % 4){ buf.push(0); }
+ var a85 = dc.ascii85.encode(buf);
+ result.push("<div>Encoded output is " + a85.length + " bytes.</div>");
+ result.push("<div><textarea>" + a85 + "</textarea></div>");
+ // test
+ {
+ var buf = dc.ascii85.decode(a85);
+ var input = new dc.bits.InputStream(buf, buf.length * 8), decoder = new dcc.lzw.Decoder(27);
+ var t = [];
+ for(var w = 0; w < s.length;){
+ var v = decoder.decode(input);
+ t.push(v);
+ w += v.length;
+ }
+ t = t.join("");
+ var p = [];
+ for(var i = 0; i < t.length; ++i){
+ p.push(String.fromCharCode(t.charCodeAt(i) + 97));
+ }
+ p = p.join("");
+ result.push("<div>Control: " + p + ".</div>");
+ }
+ // encode values
+ buf = [];
+ for(var i = 0; i < names.length; ++i){
+ var c = colors[names[i]];
+ buf.push(c[0], c[1], c[2]);
+ }
+ result.push("<div>Output is " + buf.length + " bytes long.</div>");
+ while(buf.length % 4){ buf.push(0); }
+ a85 = dc.ascii85.encode(buf);
+ result.push("<div>Encoded output is " + a85.length + " bytes.</div>");
+ result.push("<div><textarea>" + a85 + "</textarea></div>");
+ dojo.byId("status").innerHTML = result.join("\n");
+ };
+
+ dojo.addOnLoad(function(){
+ dojo.connect(dojo.byId("run"), "onclick", run);
+ });
+ </script>
+ </head>
+ <body>
+ <h1>Compress colors</h1>
+ <p><button id="run">Run</button></p>
+ <div id="status" class="pane"><em>No status yet.</em></div>
+ </body>
+</html>
projects / eow / blobdiff