/**
* Decompresses data from the given stream using the configured compression algorithm. It will
* throw an exception if the dest buffer does not have enough space to hold the decompressed data.
*
* @param dest the output bytes buffer
* @param destOffset start writing position of the output buffer
* @param bufferedBoundedStream a stream to read compressed data from, bounded to the exact amount
* of compressed data
* @param compressedSize compressed data size, header not included
* @param uncompressedSize uncompressed data size, header not included
* @param compressAlgo compression algorithm used
* @throws IOException
*/
public static void decompress(
byte[] dest,
int destOffset,
InputStream bufferedBoundedStream,
int compressedSize,
int uncompressedSize,
Compression.Algorithm compressAlgo)
throws IOException {
if (dest.length - destOffset < uncompressedSize) {
throw new IllegalArgumentException(
"Output buffer does not have enough space to hold "
+ uncompressedSize
+ " decompressed bytes, available: "
+ (dest.length - destOffset));
}
Decompressor decompressor = null;
try {
decompressor = compressAlgo.getDecompressor();
InputStream is =
compressAlgo.createDecompressionStream(bufferedBoundedStream, decompressor, 0);
IOUtils.readFully(is, dest, destOffset, uncompressedSize);
is.close();
} finally {
if (decompressor != null) {
compressAlgo.returnDecompressor(decompressor);
}
}
}
