debug/crc32.c

   1 ///////////////////////////////////////////////////////////////////////////////
   2 //
   3 /// \file       crc32.c
   4 /// \brief      Primitive CRC32 calculation tool
   5 //
   6 //  Author:     Lasse Collin
   7 //
   8 //  This file has been put into the public domain.
   9 //  You can do whatever you want with this file.
  10 //
  11 ///////////////////////////////////////////////////////////////////////////////
  12
  13 #include "sysdefs.h"
  14 #include "lzma.h"
  15 #include <stdio.h>
  16
  17
  18 int
  19 main(void)
  20 {
  21         uint32_t crc = 0;
  22
  23         do {
  24                 uint8_t buf[BUFSIZ];
  25                 const size_t size = fread(buf, 1, sizeof(buf), stdin);
  26                 crc = lzma_crc32(buf, size, crc);
  27         } while (!ferror(stdin) && !feof(stdin));
  28
  29         //printf("%08" PRIX32 "\n", crc);
  30
  31         // I want it little endian so it's easy to work with hex editor.
  32         printf("%02" PRIX32 " ", crc & 0xFF);
  33         printf("%02" PRIX32 " ", (crc >> 8) & 0xFF);
  34         printf("%02" PRIX32 " ", (crc >> 16) & 0xFF);
  35         printf("%02" PRIX32 " ", crc >> 24);
  36         printf("\n");
  37
  38         return 0;
  39 }