public static ExpandedResult processGzipEncoded(byte[] compressed, int sizeLimit)
throws IOException {
ByteArrayOutputStream outStream =
new ByteArrayOutputStream(EXPECTED_GZIP_COMPRESSION_RATIO * compressed.length);
GZIPInputStream inStream = new GZIPInputStream(new ByteArrayInputStream(compressed));
boolean isTruncated = false;
byte[] buf = new byte[BUF_SIZE];
int written = 0;
while (true) {
try {
int size = inStream.read(buf);
if (size == -1) {
break;
}
if ((written + size) > sizeLimit) {
isTruncated = true;
outStream.write(buf, 0, sizeLimit - written);
break;
}
outStream.write(buf, 0, size);
written += size;
} catch (Exception e) {
LOGGER.trace("Exception unzipping content", e);
break;
}
}
IoUtils.safeClose(outStream);
return new ExpandedResult(outStream.toByteArray(), isTruncated);
}
public static byte[] processDeflateEncoded(byte[] compressed, int sizeLimit) throws IOException {
ByteArrayOutputStream outStream =
new ByteArrayOutputStream(EXPECTED_DEFLATE_COMPRESSION_RATIO * compressed.length);
// "true" because HTTP does not provide zlib headers
Inflater inflater = new Inflater(true);
InflaterInputStream inStream =
new InflaterInputStream(new ByteArrayInputStream(compressed), inflater);
byte[] buf = new byte[BUF_SIZE];
int written = 0;
while (true) {
try {
int size = inStream.read(buf);
if (size <= 0) {
break;
}
if ((written + size) > sizeLimit) {
outStream.write(buf, 0, sizeLimit - written);
break;
}
outStream.write(buf, 0, size);
written += size;
} catch (Exception e) {
LOGGER.trace("Exception inflating content", e);
break;
}
}
IoUtils.safeClose(outStream);
return outStream.toByteArray();
}
