Very Computer

Hello:

    Sorry but I spent many hours to detect why doesn't work this
program, and I dont make anything. I'm using Zlib and compiling with
DJGPP MSDOS compiler.

This is the simple program:

#include <stdio.h>
#include <fcntl.h>
#include "zlib.h"
#include "zutil.h"
main()
{
#define SIZE 4000
unsigned char buf[SIZE];
unsigned char *ubuf;
int fp,fp2;
long uncomprLen=200000;
long comprLen=SIZE;
int err;

    z_stream d_stream; /* decompression stream */

 z_verbose=10;
 ubuf=(unsigned char *)malloc(200000);
 fp=open("prueba.gz",O_RDONLY|O_BINARY);
 comprLen=read(fp,buf,SIZE);

 memset(ubuf,0x00,200000);
 d_stream.zalloc = (alloc_func)0;
 d_stream.zfree = (free_func)0;
 d_stream.opaque = (voidpf)0;

 d_stream.next_in  = &buf[0];
 d_stream.avail_in = 0;
 d_stream.next_out = ubuf;

  err = inflateInit(&d_stream);
  printf("%d %s\n",err, "inflateInit");

  while (d_stream.total_out < uncomprLen && d_stream.total_in <
comprLen) {
        d_stream.avail_in = d_stream.avail_out = 1; /* force small
buffers */
        err = inflate(&d_stream, Z_NO_FLUSH);
        if (err == Z_STREAM_END) break;
        printf("%d %s\n",err, "inflate");
        if (err == Z_DATA_ERROR) break;
    }

Quote:}

What's happen ? Always return with Z_DATA_ERROR

Many thanks.

Juanjo Erauskin