debug/crc32.c

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