|
|
|
|
/*
|
|
|
|
|
* checkcrc.h
|
|
|
|
|
*
|
|
|
|
|
* Copyright (c) 2003 Paul Campbell <paul@taniwha.com>
|
|
|
|
|
* Requires the TQt widget libraries, available at no cost at
|
|
|
|
|
* http://www.troll.no/
|
|
|
|
|
*
|
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
|
|
|
* (at your option) any later version.
|
|
|
|
|
*
|
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
|
*
|
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef _CHECKCRC_H_
|
|
|
|
|
#define _CHECKCRC_H_
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#include <zlib.h>
|
|
|
|
|
#include <stdio.h>
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
checkcrc(const char *name, unsigned long &len_res, unsigned long &crc_res)
|
|
|
|
|
{
|
|
|
|
|
unsigned long crc = ::crc32(0L, Z_NULL, 0);
|
|
|
|
|
unsigned long len = 0;
|
|
|
|
|
|
|
|
|
|
FILE *f = ::fopen(name, "r");
|
|
|
|
|
if (f) {
|
|
|
|
|
unsigned char buffer[1024];
|
|
|
|
|
for (;;) {
|
|
|
|
|
int l = ::fread(buffer, 1, sizeof(buffer), f);
|
|
|
|
|
if (l <= 0)
|
|
|
|
|
break;
|
|
|
|
|
len += l;
|
|
|
|
|
crc = ::crc32(crc, buffer, l);
|
|
|
|
|
}
|
|
|
|
|
::fclose(f);
|
|
|
|
|
}
|
|
|
|
|
crc_res = crc;
|
|
|
|
|
len_res = len;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif
|
