internal int deflate(ZStream strm, int flush){
int old_flush;
if(flush>Z_FINISH || flush<0){
return Z_STREAM_ERROR;
}
if(strm.next_out == null ||
(strm.next_in == null && strm.avail_in != 0) ||
(status == FINISH_STATE && flush != Z_FINISH)) {
strm.msg=z_errmsg[Z_NEED_DICT-(Z_STREAM_ERROR)];
return Z_STREAM_ERROR;
}
if(strm.avail_out == 0){
strm.msg=z_errmsg[Z_NEED_DICT-(Z_BUF_ERROR)];
return Z_BUF_ERROR;
}
this.strm = strm; // just in case
old_flush = last_flush;
last_flush = flush;
// Write the zlib header
if(status == INIT_STATE) {
int header = (Z_DEFLATED+((w_bits-8)<<4))<<8;
int level_flags=((level-1)&0xff)>>1;
if(level_flags>3) level_flags=3;
header |= (level_flags<<6);
if(strstart!=0) header |= PRESET_DICT;
header+=31-(header % 31);
status=BUSY_STATE;
putShortMSB(header);
// Save the adler32 of the preset dictionary:
if(strstart!=0){
putShortMSB((int)(strm.adler>>16));
putShortMSB((int)(strm.adler&0xffff));
}
strm.adler=strm._adler.adler32(0, null, 0, 0);
}
// Flush as much pending output as possible
if(pending != 0) {
strm.flush_pending();
if(strm.avail_out == 0) {
//System.out.println(" avail_out==0");
// Since avail_out is 0, deflate will be called again with
// more output space, but possibly with both pending and
// avail_in equal to zero. There won't be anything to do,
// but this is not an error situation so make sure we
// return OK instead of BUF_ERROR at next call of deflate:
last_flush = -1;
return Z_OK;
}
// Make sure there is something to do and avoid duplicate consecutive
// flushes. For repeated and useless calls with Z_FINISH, we keep
// returning Z_STREAM_END instead of Z_BUFF_ERROR.
}
else if(strm.avail_in==0 && flush <= old_flush &&
flush != Z_FINISH) {
strm.msg=z_errmsg[Z_NEED_DICT-(Z_BUF_ERROR)];
return Z_BUF_ERROR;
}
// User must not provide more input after the first FINISH:
if(status == FINISH_STATE && strm.avail_in != 0) {
strm.msg=z_errmsg[Z_NEED_DICT-(Z_BUF_ERROR)];
return Z_BUF_ERROR;
}
// Start a new block or continue the current one.
if(strm.avail_in!=0 || lookahead!=0 ||
(flush != Z_NO_FLUSH && status != FINISH_STATE)) {
int bstate=-1;
switch(config_table[level].func){
case STORED:
bstate = deflate_stored(flush);
break;
case FAST:
bstate = deflate_fast(flush);
break;
case SLOW:
bstate = deflate_slow(flush);
break;
default:
break;
}
if (bstate==FinishStarted || bstate==FinishDone) {
status = FINISH_STATE;
}
if (bstate==NeedMore || bstate==FinishStarted) {
if(strm.avail_out == 0) {
last_flush = -1; // avoid BUF_ERROR next call, see above
}
return Z_OK;
// If flush != Z_NO_FLUSH && avail_out == 0, the next call
// of deflate should use the same flush parameter to make sure
// that the flush is complete. So we don't have to output an
// empty block here, this will be done at next call. This also
// ensures that for a very small output buffer, we emit at most
// one empty block.
}
if (bstate==BlockDone) {
if(flush == Z_PARTIAL_FLUSH) {
_tr_align();
}
else { // FULL_FLUSH or SYNC_FLUSH
_tr_stored_block(0, 0, false);
// For a full flush, this empty block will be recognized
// as a special marker by inflate_sync().
if(flush == Z_FULL_FLUSH) {
//state.head[s.hash_size-1]=0;
for(int i=0; i<hash_size/*-1*/; i++) // forget history
head[i]=0;
}
}
strm.flush_pending();
if(strm.avail_out == 0) {
last_flush = -1; // avoid BUF_ERROR at next call, see above
return Z_OK;
}
}
}
if(flush!=Z_FINISH) return Z_OK;
if(noheader!=0) return Z_STREAM_END;
// Write the zlib trailer (adler32)
putShortMSB((int)(strm.adler>>16));
putShortMSB((int)(strm.adler&0xffff));
strm.flush_pending();
// If avail_out is zero, the application will call deflate again
// to flush the rest.
noheader = -1; // write the trailer only once!
return pending != 0 ? Z_OK : Z_STREAM_END;
}
internal int deflate(ZStream strm, int flush)
{
if ((flush > 4) || (flush < 0))
{
return(-2);
}
if (((strm.next_out == null) || ((strm.next_in == null) && (strm.avail_in != 0))) || ((this.status == 0x29a) && (flush != 4)))
{
strm.msg = z_errmsg[4];
return(-2);
}
if (strm.avail_out == 0)
{
strm.msg = z_errmsg[7];
return(-5);
}
this.strm = strm;
int num = this.last_flush;
this.last_flush = flush;
if (this.status == 0x2a)
{
int b = (8 + ((this.w_bits - 8) << 4)) << 8;
int num3 = ((this.level - 1) & 0xff) >> 1;
if (num3 > 3)
{
num3 = 3;
}
b |= num3 << 6;
if (this.strstart != 0)
{
b |= 0x20;
}
b += 0x1f - (b % 0x1f);
this.status = 0x71;
this.putShortMSB(b);
if (this.strstart != 0)
{
this.putShortMSB((int)(strm.adler >> 0x10));
this.putShortMSB((int)(strm.adler & 0xffffL));
}
strm.adler = strm._adler.adler32(0L, null, 0, 0);
}
if (this.pending != 0)
{
strm.flush_pending();
if (strm.avail_out == 0)
{
this.last_flush = -1;
return(0);
}
}
else if (((strm.avail_in == 0) && (flush <= num)) && (flush != 4))
{
strm.msg = z_errmsg[7];
return(-5);
}
if ((this.status == 0x29a) && (strm.avail_in != 0))
{
strm.msg = z_errmsg[7];
return(-5);
}
if (((strm.avail_in != 0) || (this.lookahead != 0)) || ((flush != 0) && (this.status != 0x29a)))
{
int num4 = -1;
switch (config_table[this.level].func)
{
case 0:
num4 = this.deflate_stored(flush);
break;
case 1:
num4 = this.deflate_fast(flush);
break;
case 2:
num4 = this.deflate_slow(flush);
break;
}
switch (num4)
{
case 2:
case 3:
this.status = 0x29a;
break;
}
if ((num4 == 0) || (num4 == 2))
{
if (strm.avail_out == 0)
{
this.last_flush = -1;
}
return(0);
}
if (num4 == 1)
{
if (flush == 1)
{
this._tr_align();
}
else
{
this._tr_stored_block(0, 0, false);
if (flush == 3)
{
for (int i = 0; i < this.hash_size; i++)
{
this.head[i] = 0;
}
}
}
strm.flush_pending();
if (strm.avail_out == 0)
{
this.last_flush = -1;
return(0);
}
}
}
if (flush != 4)
{
return(0);
}
if (this.noheader != 0)
{
return(1);
}
this.putShortMSB((int)(strm.adler >> 0x10));
this.putShortMSB((int)(strm.adler & 0xffffL));
strm.flush_pending();
this.noheader = -1;
return((this.pending == 0) ? 1 : 0);
}
internal void flush_block_only(bool eof)
{
_tr_flush_block((block_start < 0) ? (-1) : block_start, strstart - block_start, eof);
block_start = strstart;
strm.flush_pending();
}
internal int deflate(ZStream strm, int flush)
{
if (flush > 4 || flush < 0)
{
return(-2);
}
if (strm.next_out == null || (strm.next_in == null && strm.avail_in != 0) || (this.status == 666 && flush != 4))
{
strm.msg = Deflate.z_errmsg[4];
return(-2);
}
if (strm.avail_out == 0)
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
this.strm = strm;
int num = this.last_flush;
this.last_flush = flush;
if (this.status == 42)
{
int num2 = 8 + (this.w_bits - 8 << 4) << 8;
int num3 = (this.level - 1 & 255) >> 1;
if (num3 > 3)
{
num3 = 3;
}
num2 |= num3 << 6;
if (this.strstart != 0)
{
num2 |= 32;
}
num2 += 31 - num2 % 31;
this.status = 113;
this.putShortMSB(num2);
if (this.strstart != 0)
{
this.putShortMSB((int)(strm.adler >> 16));
this.putShortMSB((int)(strm.adler & 65535L));
}
strm.adler = strm._adler.adler32(0L, null, 0, 0);
}
if (this.pending != 0)
{
strm.flush_pending();
if (strm.avail_out == 0)
{
this.last_flush = -1;
return(0);
}
}
else if (strm.avail_in == 0 && flush <= num && flush != 4)
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
if (this.status == 666 && strm.avail_in != 0)
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
if (strm.avail_in != 0 || this.lookahead != 0 || (flush != 0 && this.status != 666))
{
int num4 = -1;
switch (Deflate.config_table[this.level].func)
{
case 0:
num4 = this.deflate_stored(flush);
break;
case 1:
num4 = this.deflate_fast(flush);
break;
case 2:
num4 = this.deflate_slow(flush);
break;
}
if (num4 == 2 || num4 == 3)
{
this.status = 666;
}
if (num4 == 0 || num4 == 2)
{
if (strm.avail_out == 0)
{
this.last_flush = -1;
}
return(0);
}
if (num4 == 1)
{
if (flush == 1)
{
this._tr_align();
}
else
{
this._tr_stored_block(0, 0, false);
if (flush == 3)
{
for (int i = 0; i < this.hash_size; i++)
{
this.head[i] = 0;
}
}
}
strm.flush_pending();
if (strm.avail_out == 0)
{
this.last_flush = -1;
return(0);
}
}
}
if (flush != 4)
{
return(0);
}
if (this.noheader != 0)
{
return(1);
}
this.putShortMSB((int)(strm.adler >> 16));
this.putShortMSB((int)(strm.adler & 65535L));
strm.flush_pending();
this.noheader = -1;
if (this.pending == 0)
{
return(1);
}
return(0);
}
internal int deflate(ZStream strm, int flush)
{
if (flush > 4 || flush < 0)
{
return(-2);
}
if (strm.next_out == null || (strm.next_in == null && strm.avail_in != 0) || (status == 666 && flush != 4))
{
strm.msg = z_errmsg[4];
return(-2);
}
if (strm.avail_out == 0)
{
strm.msg = z_errmsg[7];
return(-5);
}
this.strm = strm;
int num = last_flush;
last_flush = flush;
if (status == 42)
{
int num2 = 8 + (w_bits - 8 << 4) << 8;
int num3 = ((level - 1) & 0xFF) >> 1;
if (num3 > 3)
{
num3 = 3;
}
num2 |= num3 << 6;
if (strstart != 0)
{
num2 |= 0x20;
}
num2 += 31 - num2 % 31;
status = 113;
putShortMSB(num2);
if (strstart != 0)
{
putShortMSB((int)(strm.adler >> 16));
putShortMSB((int)(strm.adler & 0xFFFF));
}
strm.adler = strm._adler.adler32(0L, null, 0, 0);
}
if (pending != 0)
{
strm.flush_pending();
if (strm.avail_out == 0)
{
last_flush = -1;
return(0);
}
}
else if (strm.avail_in == 0 && flush <= num && flush != 4)
{
strm.msg = z_errmsg[7];
return(-5);
}
if (status == 666 && strm.avail_in != 0)
{
strm.msg = z_errmsg[7];
return(-5);
}
if (strm.avail_in != 0 || lookahead != 0 || (flush != 0 && status != 666))
{
int num4 = -1;
switch (config_table[level].func)
{
case 0:
num4 = deflate_stored(flush);
break;
case 1:
num4 = deflate_fast(flush);
break;
case 2:
num4 = deflate_slow(flush);
break;
}
if (num4 == 2 || num4 == 3)
{
status = 666;
}
switch (num4)
{
case 0:
case 2:
if (strm.avail_out == 0)
{
last_flush = -1;
}
return(0);
case 1:
if (flush == 1)
{
_tr_align();
}
else
{
_tr_stored_block(0, 0, eof: false);
if (flush == 3)
{
for (int i = 0; i < hash_size; i++)
{
head[i] = 0;
}
}
}
strm.flush_pending();
if (strm.avail_out == 0)
{
last_flush = -1;
return(0);
}
break;
}
}
if (flush != 4)
{
return(0);
}
if (noheader != 0)
{
return(1);
}
putShortMSB((int)(strm.adler >> 16));
putShortMSB((int)(strm.adler & 0xFFFF));
strm.flush_pending();
noheader = -1;
return((pending == 0) ? 1 : 0);
}
