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/*
* checkcrc.h
*
* Copyright (c) 2003 Paul Campbell <paul@taniwha.com>
* Requires the Qt 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
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