Commit | Line | Data |
---|---|---|
3719602c PC |
1 | /* gcc -O3 -o crc32 crc32.c -lz */ |
2 | ||
3 | #include <stdio.h> | |
4 | #include <errno.h> | |
5 | #include <string.h> | |
6 | ||
7 | #include <encodings/crc32.h> | |
8 | ||
9 | int main(int argc, const char* argv[]) | |
10 | { | |
11 | if (argc != 2 ) | |
12 | { | |
13 | fprintf( stderr, "Usage: crc32 <filename>\n" ); | |
14 | return 1; | |
15 | } | |
16 | ||
17 | FILE *file = fopen(argv[1], "rb"); | |
18 | ||
19 | if (file) | |
20 | { | |
21 | uint32_t crc = encoding_crc32(0L, NULL, 0 ); | |
22 | ||
23 | for (;;) | |
24 | { | |
25 | uint8_t buffer[16384]; | |
26 | ||
27 | int numread = fread((void*)buffer, 1, sizeof(buffer), file); | |
28 | ||
29 | if (numread > 0) | |
30 | crc = encoding_crc32( crc, buffer, numread ); | |
31 | else | |
32 | break; | |
33 | } | |
34 | ||
35 | fclose(file); | |
36 | ||
37 | printf("%08x\n", crc); | |
38 | return 0; | |
39 | } | |
40 | ||
41 | fprintf(stderr, "Error opening input file: %s\n", strerror(errno)); | |
42 | return 1; | |
43 | } |