+++ /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