Class UnicodeDecompressor

USAGE

The static methods on UnicodeDecompressor may be used in a straightforward manner to decompress simple strings:

  byte [] compressed = ... ; // get compressed bytes from somewhere
  String result = UnicodeDecompressor.decompress(compressed);
 

The static methods have a fairly large memory footprint. For finer-grained control over memory usage, UnicodeDecompressor offers more powerful APIs allowing iterative decompression:

  // Decompress an array "bytes" of length "len" using a buffer of 512 chars
  // to the Writer "out"

  UnicodeDecompressor myDecompressor         = new UnicodeDecompressor();
  final static int    BUFSIZE                = 512;
  char []             charBuffer             = new char [ BUFSIZE ];
  int                 charsWritten           = 0;
  int []              bytesRead              = new int [1];
  int                 totalBytesDecompressed = 0;
  int                 totalCharsWritten      = 0;

  do {
    // do the decompression
    charsWritten = myDecompressor.decompress(bytes, totalBytesDecompressed, 
                                             len, bytesRead,
                                             charBuffer, 0, BUFSIZE);

    // do something with the current set of chars
    out.write(charBuffer, 0, charsWritten);

    // update the no. of bytes decompressed
    totalBytesDecompressed += bytesRead[0];

    // update the no. of chars written
    totalCharsWritten += charsWritten;

  } while(totalBytesDecompressed <32len);

  myDecompressor.reset(); // reuse decompressor
 

Decompression is performed according to the standard set forth in Unicode Technical Report #6