function ASCIIHexEncode(value) {
    var result = '';
    var i;

    for (var i = 0; i < value.length; i += 1) {
      result += ("0" + value.charCodeAt(i).toString(16)).slice(-2);
    }

    result += '>';
    return result;
  }
function ASCIIHexEncode(value) {
    var result = '';
    var i;

    for (var i = 0; i < value.length; i += 1) {
      result += ("0" + value.charCodeAt(i).toString(16)).slice(-2);
    }

    result += '>';
    return result;
  }
function ASCIIHexEncode ( value ) { var result = '' ; var i ; for ( var i = 0 ; i < value . length ; i += 1 ) { result += ( "0" + value . charCodeAt ( i ) . toString ( 16 ) ) . slice ( - 2 ) ; } result += '>' ; return result ; }
TODO: Not Tested:
https://gist.github.com/revolunet/843889
LZW-compress a string
var LZWEncode = function(s, options) {
options = Object.assign({
predictor: 1,
colors: 1,
bitsPerComponent: 8,
columns: 1,
earlyChange: 1
}, options);
var dict = {};
var data = (s + "").split("");
var out = [];
var currChar;
var phrase = data[0];
var code = 256; //0xe000
for (var i=1; i<data.length; i++) {
currChar=data[i];
if (dict['_' + phrase + currChar] != null) {
phrase += currChar;
}
else {
out.push(phrase.length > 1 ? dict['_'+phrase] : phrase.charCodeAt(0));
dict['_' + phrase + currChar] = code;
code++;
phrase=currChar;
}
}
out.push(phrase.length > 1 ? dict['_'+phrase] : phrase.charCodeAt(0));
for (var i=0; i<out.length; i++) {
out[i] = String.fromCharCode(out[i]);
}
return out.join("");
}
Decompress an LZW-encoded string
var LZWDecode = function(s, options) {
options = Object.assign({
predictor: 1,
colors: 1,
bitsPerComponent: 8,
columns: 1,
earlyChange: 1
}, options);
var dict = {};
var data = (s + "").split("");
var currChar = data[0];
var oldPhrase = currChar;
var out = [currChar];
var code = 256;
var phrase;
for (var i=1; i<data.length; i++) {
var currCode = data[i].charCodeAt(0);
if (currCode < 256) {
phrase = data[i];
}
else {
phrase = dict['_'+currCode] ? dict['_'+currCode] : (oldPhrase + currChar);
}
out.push(phrase);
currChar = phrase.charAt(0);
dict['_'+code] = oldPhrase + currChar;
code++;
oldPhrase = phrase;
}
return out.join("");
}
TODO : Not Tested : https : // gist . github . com / revolunet / 843889 LZW - compress a string var LZWEncode = function ( s options ) { options = Object . assign ( { predictor : 1 colors : 1 bitsPerComponent : 8 columns : 1 earlyChange : 1 } options ) ; var dict = {} ; var data = ( s + ) . split ( ) ; var out = [] ; var currChar ; var phrase = data [ 0 ] ; var code = 256 ; // 0xe000 for ( var i = 1 ; i<data . length ; i ++ ) { currChar = data [ i ] ; if ( dict [ _ + phrase + currChar ] ! = null ) { phrase + = currChar ; } else { out . push ( phrase . length > 1 ? dict [ _ + phrase ] : phrase . charCodeAt ( 0 )) ; dict [ _ + phrase + currChar ] = code ; code ++ ; phrase = currChar ; } } out . push ( phrase . length > 1 ? dict [ _ + phrase ] : phrase . charCodeAt ( 0 )) ; for ( var i = 0 ; i<out . length ; i ++ ) { out [ i ] = String . fromCharCode ( out [ i ] ) ; } return out . join ( ) ; } Decompress an LZW - encoded string var LZWDecode = function ( s options ) { options = Object . assign ( { predictor : 1 colors : 1 bitsPerComponent : 8 columns : 1 earlyChange : 1 } options ) ; var dict = {} ; var data = ( s + ) . split ( ) ; var currChar = data [ 0 ] ; var oldPhrase = currChar ; var out = [ currChar ] ; var code = 256 ; var phrase ; for ( var i = 1 ; i<data . length ; i ++ ) { var currCode = data [ i ] . charCodeAt ( 0 ) ; if ( currCode < 256 ) { phrase = data [ i ] ; } else { phrase = dict [ _ + currCode ] ? dict [ _ + currCode ] : ( oldPhrase + currChar ) ; } out . push ( phrase ) ; currChar = phrase . charAt ( 0 ) ; dict [ _ + code ] = oldPhrase + currChar ; code ++ ; oldPhrase = phrase ; } return out . join ( ) ; }