public static void main(String[] arg)
{
int err;
int comprLen = 40000;
int uncomprLen = comprLen;
byte[] compr = new byte[comprLen];
byte[] uncompr = new byte[uncomprLen];
ZStream c_stream = new ZStream();
err = c_stream.deflateInit(JZlib.Z_BEST_SPEED);
CHECK_ERR(c_stream, err, "deflateInit");
c_stream.next_out = compr;
c_stream.next_out_index = 0;
c_stream.avail_out = comprLen;
// At this point, uncompr is still mostly zeroes, so it should compress
// very well:
c_stream.next_in = uncompr;
c_stream.avail_in = uncomprLen;
err = c_stream.deflate(JZlib.Z_NO_FLUSH);
CHECK_ERR(c_stream, err, "deflate");
if (c_stream.avail_in != 0)
{
java.lang.SystemJ.outJ.println("deflate not greedy");
java.lang.SystemJ.exit(1);
}
// Feed in already compressed data and switch to no compression:
c_stream.deflateParams(JZlib.Z_NO_COMPRESSION, JZlib.Z_DEFAULT_STRATEGY);
c_stream.next_in = compr;
c_stream.next_in_index = 0;
c_stream.avail_in = comprLen / 2;
err = c_stream.deflate(JZlib.Z_NO_FLUSH);
CHECK_ERR(c_stream, err, "deflate");
// Switch back to compressing mode:
c_stream.deflateParams(JZlib.Z_BEST_COMPRESSION, JZlib.Z_FILTERED);
c_stream.next_in = uncompr;
c_stream.next_in_index = 0;
c_stream.avail_in = uncomprLen;
err = c_stream.deflate(JZlib.Z_NO_FLUSH);
CHECK_ERR(c_stream, err, "deflate");
err = c_stream.deflate(JZlib.Z_FINISH);
if (err != JZlib.Z_STREAM_END)
{
java.lang.SystemJ.outJ.println("deflate should report Z_STREAM_END");
java.lang.SystemJ.exit(1);
}
err = c_stream.deflateEnd();
CHECK_ERR(c_stream, err, "deflateEnd");
ZStream d_stream = new ZStream();
d_stream.next_in = compr;
d_stream.next_in_index = 0;
d_stream.avail_in = comprLen;
err = d_stream.inflateInit();
CHECK_ERR(d_stream, err, "inflateInit");
while (true)
{
d_stream.next_out = uncompr;
d_stream.next_out_index = 0;
d_stream.avail_out = uncomprLen;
err = d_stream.inflate(JZlib.Z_NO_FLUSH);
if (err == JZlib.Z_STREAM_END)
{
break;
}
CHECK_ERR(d_stream, err, "inflate large");
}
err = d_stream.inflateEnd();
CHECK_ERR(d_stream, err, "inflateEnd");
if (d_stream.total_out != 2 * uncomprLen + comprLen / 2)
{
java.lang.SystemJ.outJ.println("bad large inflate: " + d_stream.total_out);
java.lang.SystemJ.exit(1);
}
else
{
java.lang.SystemJ.outJ.println("large_inflate(): OK");
}
}
