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Posted By

aadsm on 01/12/10

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Last Edited at 01/12/10 11:37am

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ByteArray.replace

/ Published in: JavaScript
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  1. ByteArray.prototype.indexOf = Array.prototype.indexOf;
  2. ByteArray.prototype.replace = function(searchBytes, replaceBytes)
  3. {
  4.     searchBytes = searchBytes instanceof Array ? searchBytes : [searchBytes];
  5.     replaceBytes = replaceBytes instanceof Array ? replaceBytes : (replaceBytes === undefined ? [] : [replaceBytes]);
  6.     if( searchBytes.length == 0 ) { return; }
  7.  
  8.     var ix;
  9.     var lastIndex = 0;
  10.     var spliceArgs = [-1, searchBytes.length].concat(replaceBytes);
  11.  
  12.     while( (ix = this.indexOf(searchBytes[0])) >= 0 )
  13.     {
  14.         var i = 0;
  15.  
  16.         while( ++i < searchBytes.length && this[ix+i] == searchBytes[i] );
  17.         if( i < searchBytes.length ) { lastIndex = ix+1; continue; }
  18.  
  19.         // it's a match!!
  20.         spliceArgs[0] = ix;
  21.         Array.prototype.splice.apply( this, spliceArgs );
  22.         ix += replaceBytes.length;
  23.     }
  24.  
  25.     return this;
  26. }

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