1 jls.loader.provide('jls.io.cs.SingleByteDecoder');
  2 
  3 jls.loader.require('jls.lang.CharBuffer');
  4 
  5 jls.io.cs.SingleByteDecoder = jls.lang.Class.create( /** @lends jls.io.cs.SingleByteDecoder.prototype */
  6 {
  7     /**
  8      * Creates a character decoder.
  9      * 
 10      * @constructs
 11      * @class This class represents a single byte character set decoder.
 12      */
 13     initialize : function(charset, mapping) {
 14         this._charset = charset;
 15         this._mapping = mapping;
 16         this._replacement = '?'.charCodeAt(0);
 17     },
 18     /**
 19      * Decodes byte buffer and returns the character buffer.
 20      *
 21      * @param {jls.lang.ByteBuffer} input The buffer to decode.
 22      * @param {jls.lang.CharBuffer} [buffer] The buffer to use.
 23      * @returns {jls.lang.CharBuffer} The decoded character buffer.
 24      */
 25     decode : function(input, buffer) {
 26     	var output = buffer || jls.lang.CharBuffer.allocate(input.remaining() + 1, true);
 27     	while (input.remaining() > 0) {
 28     		var b = input.getByte();
 29     		var c;
 30     		if (b in this._mapping) {
 31     			c = this._mapping[b];
 32     		} else {
 33     			c = this._replacement;
 34     		}
 35     		output.putChar(c);
 36     	}
 37         return output;
 38     }
 39 });
 40 
 41