105 lines
2.4 KiB
C
105 lines
2.4 KiB
C
/* checksum-icc.c
|
|
*
|
|
* Copyright (c) 2012 John Cunningham Bowler
|
|
*
|
|
* Last changed in libpng 1.6.0 [(PENDING RELEASE)]
|
|
*
|
|
* This code is released under the libpng license.
|
|
* For conditions of distribution and use, see the disclaimer
|
|
* and license in png.h
|
|
*
|
|
* Generate crc32 and adler32 checksums of the given input files, used to
|
|
* generate check-codes for use when matching ICC profiles within libpng.
|
|
*/
|
|
#include <stdio.h>
|
|
|
|
#include <zlib.h>
|
|
|
|
static int
|
|
read_one_file(FILE *ip, const char *name)
|
|
{
|
|
uLong length = 0;
|
|
uLong a32 = adler32(0, NULL, 0);
|
|
uLong c32 = crc32(0, NULL, 0);
|
|
Byte header[132];
|
|
|
|
for (;;)
|
|
{
|
|
int ch = getc(ip);
|
|
Byte b;
|
|
|
|
if (ch == EOF) break;
|
|
|
|
b = (Byte)ch;
|
|
|
|
if (length < sizeof header)
|
|
header[length] = b;
|
|
|
|
++length;
|
|
a32 = adler32(a32, &b, 1);
|
|
c32 = crc32(c32, &b, 1);
|
|
}
|
|
|
|
if (ferror(ip))
|
|
return 0;
|
|
|
|
/* Success */
|
|
printf("{ 0x%8.8lx, 0x%8.8lx, "
|
|
"0x%2.2x%2.2x%2.2x%2.2x, 0x%2.2x%2.2x%2.2x%2.2x, "
|
|
"0x%2.2x%2.2x%2.2x%2.2x, 0x%2.2x%2.2x%2.2x%2.2x,\n"
|
|
" \"%4.4d/%2.2d/%2.2d %2.2d:%2.2d:%2.2d\", %lu, \"%s\" },\n",
|
|
(unsigned long)a32, (unsigned long)c32,
|
|
header[84], header[85], header[86], header[87],
|
|
header[88], header[89], header[90], header[91],
|
|
header[92], header[93], header[94], header[95],
|
|
header[96], header[97], header[98], header[99],
|
|
# define u16(x) (header[x] * 256 + header[x+1])
|
|
u16(24), u16(26), u16(28), u16(30), u16(32), u16(34),
|
|
(unsigned long)length, name);
|
|
|
|
return 1;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int err = 0;
|
|
|
|
printf("= {\n/* adler32 crc32 MD5\n"
|
|
" date length name */\n");
|
|
|
|
if (argc > 1)
|
|
{
|
|
int i;
|
|
|
|
for (i=1; i<argc; ++i)
|
|
{
|
|
FILE *ip = fopen(argv[i], "rb");
|
|
|
|
if (ip == NULL || !read_one_file(ip, argv[i]))
|
|
{
|
|
err = 1;
|
|
perror(argv[i]);
|
|
fprintf(stderr, "%s: read error\n", argv[i]);
|
|
printf(" { 0, 0, 0, /* ERROR: */, \"%s\" },\n", argv[i]);
|
|
}
|
|
|
|
(void)fclose(ip);
|
|
}
|
|
}
|
|
|
|
else
|
|
{
|
|
if (!read_one_file(stdin, "-"))
|
|
{
|
|
err = 1;
|
|
perror("stdin");
|
|
fprintf(stderr, "stdin: read error\n");
|
|
printf(" { 0, 0, 0, /* ERROR: */, \"-\" },\n");
|
|
}
|
|
}
|
|
|
|
printf("};\n");
|
|
|
|
return err;
|
|
}
|