Encoding

Developer
Tom
Size
3,245 Kb
Views
18,216
  1. Encoding Previews
  2. Encoding HTML Codes
  3. Encoding CSS Codes
  4. Encoding JS Codes

How do I make an encoding?

Experiments with some data transformation algorithms, for my own sake.. What is a encoding? How do you make a encoding? This script and codes were developed by Tom on 16 September 2022, Friday.

Encoding Previews
IQ Test

Encoding - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Encoding</title> <link rel='stylesheet prefetch' href='https://fonts.googleapis.com/css?family=Cousine:400,700'> <link rel="stylesheet" href="css/style.css">
</head>
<body> <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Encoding - Script Codes CSS Codes

* { font-family: 'Courier New';
}
body { padding: 0.75em 1em; font-size: 18px; color: #0af; background: #111;
}
.stdout { color: #0af;
}
.stderr { color: #e33;
}

Encoding - Script Codes JS Codes

/** * the list of tags * for the uPerm codec, these tags must never change order */
var Tags = [ /* 2014-11-27T00:33:00 */ 'tag1', /* 2014-11-27T00:34:00 */ 'tag2', /* 2014-11-27T01:36:00 */ 'tag3'
];
var TagCodec = { /** * reversibly compresses a list of tags; inspired by *nix octal permissions * this algorithm supports: *	- 40 unique tags using 3 digits or less * - 130 unique tags using 4 digits or less * - 450 unique tgs using 5 digits or less *	- 4400 unique tags using 6 digits or less *	- 10k unique tags using 7 digits or less * * * @arg {array} tagList - array of strings, each being a single tag * @returns {string} encoding the tags */ 'uPermEncode': function(tagList) { var bits = 0; for(var i = 0, iMax = Tags.length; i < iMax; i++) { if(tagList.indexOf(Tags[i]) >= 0) {	bits += (i * 2) + 1; } } return bits; }, /** * get the tags that are encoded by a cipher; the reverse of uPermEncode * @arg {string} cipher - a string that encodes a set of tags * @returns {array} of strings, each being a tag recovered from cipher */ 'uPermDecode': function(cipher) { var tags = []; var value = parseInt(cipher); for(var i = Tags.length - 1; i >= 0; i--) { var tVal = (i * 2) + 1; if(value >= tVal) { tags.push(Tags[i]); value -= tVal; } } return tags; }
};
/** * THE TEST FUNCTION HOPPER * every function in this array will be executed in order, and provided with mechanisms for * signaling output * * function myTest($stdout, $stderr, console, undefined) * @arg {jquery} stdout - a DOM node to insert your screen output * @arg {jquery} stderr - a DOM node to insert bad screen output * @arg {console} console - a ref to the actual console (or substitute?) * @arg {undefined} undefined - a guaranteed-to-be-genuine undefined value */
[
/** * demonstrates encoding arbitrary set of tags as a number * inspired by Unix-style octal permissions * thought to be the most dense mechanism that doesn't involve storage external to the filesystem */
function test1($stdout, $stderr, console, undefined){ var objs = [ { name: 'thing1', tags: [] }, // --- { name: 'thing2', tags: ['tag1'] }, // x-- { name: 'thing3', tags: ['tag2'] }, // -x- { name: 'thing4', tags: ['tag3'] }, // --x { name: 'thing5', tags: ['tag1', 'tag2'] }, // xx- { name: 'thing6', tags: ['tag1', 'tag3'] }, // x-x { name: 'thing7', tags: ['tag2', 'tag3'] }, // -xx { name: 'thing8', tags: ['tag1', 'tag2', 'tag3'] } // xxx ]; var names = [' name | E | T', '-------+---+-------'].concat(objs.map(function enc(thing) { var enc = TagCodec.uPermEncode(thing.tags); var dec = TagCodec.uPermDecode(enc); return [ thing.name, enc, dec ].join(' | '); })); $stdout.text(names.join('\n'));
}].forEach(function executeTest(fn) { // execute each test, providing it methods of updating the page and doing other output things var $stdout = $('<pre class="stdout"></pre>'); var $stderr = $('<pre class="stderr"></pre>'); fn($stdout, $stderr); $('body').append($stdout, $stderr);
});
Encoding - Script Codes
Encoding - Script Codes
Home Page Home
Developer Tom
Username tomprogers
Uploaded September 16, 2022
Rating 3
Size 3,245 Kb
Views 18,216
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