/* 

 * usage : lzodecompress.exe <output-size> <input-size></input-size></output-size>

 * 

 * lzodecompress reads <input-size> bytes from stdin, decompress them and write the result to stdout</input-size>

 * the decompressed buffer must be <output-size> bytes </output-size>

 *

 * errors are logged to stderr

 * return == 0 iff no errors

 */

#include "lzo/lzoconf.h"

#include "lzo/lzo1x.h"

/* portability layer */

#define WANT_LZO_MALLOC 1

#include "lzo/lzoutil.h"

#include <stdio.h></stdio.h>

#include <fcntl.h></fcntl.h>

#include <stdlib.h></stdlib.h>

#if defined(_WIN32)

#include <io.h></io.h>

#endif

int main(int argc, char *argv[])

{

  lzo_uint src_len, dst_len;

  lzo_bytep src;

  lzo_bytep dst;

  lzo_bytep wrkmem;

  int r;

#if defined(_WIN32)

  /* stdin/stdout must be binary streams */

  r = _setmode(_fileno(stdout), _O_BINARY);

  r = _setmode(_fileno(stdin), _O_BINARY);

#endif

  if(argc != 3) 

  {

    fprintf(stderr, "Usage : %s <output-size> <input-size>\n"</input-size></output-size>

	                "    <output-size> is the decompressed buffer size in bytes\n"</output-size>

                    "    <input-size> is the compressed buffer size in bytes\n", argv[0]);</input-size>

    return -1; 

  }

  dst_len = atoi(argv[1]); 

  src_len = atoi(argv[2]); 

  if (lzo_init() != LZO_E_OK)

  {

    fprintf(stderr, "Couldn't initialize lzo\n");

	return -2;

  }

  /* allocate and read input buffer */

  src = (lzo_bytep) lzo_malloc(src_len);  

  fread(src, 1, src_len, stdin);

  /* allocate the buffer for the decompressed data */  

  dst = (lzo_bytep) lzo_malloc(dst_len);

  /* allocate the working memory for lzo */  

  wrkmem = (lzo_bytep) lzo_malloc(LZO1X_1_MEM_COMPRESS);

  /* decompress data (note: lzo1x_decompress_safe does not throw exception. It instead can return error codes) */

  r = lzo1x_decompress_safe(src, src_len, dst, &dst_len, wrkmem);

  if (r == LZO_E_OK)

  {

    /* write compressed data */

	fwrite(dst, 1, dst_len, stdout);

  }

  else

  {

    fprintf(stderr, "Compression failed : code = %d\n", r);

  }  

  /* free the memory */  

  lzo_free(wrkmem);

  lzo_free(dst);

  lzo_free(src);

  /* return code */

  if (r == LZO_E_OK)

    return 0;

  else 

    return -3;

}