Make fsck-cache warn about old-style tree objects that have full
[git] / show-diff.c
1 /*
2  * GIT - The information manager from hell
3  *
4  * Copyright (C) Linus Torvalds, 2005
5  */
6 #include "cache.h"
7
8 static void show_differences(struct cache_entry *ce, struct stat *cur,
9         void *old_contents, unsigned long long old_size)
10 {
11         static char cmd[1000];
12         FILE *f;
13
14         snprintf(cmd, sizeof(cmd), "diff -u - %s", ce->name);
15         f = popen(cmd, "w");
16         fwrite(old_contents, old_size, 1, f);
17         pclose(f);
18 }
19
20 int main(int argc, char **argv)
21 {
22         int entries = read_cache();
23         int i;
24
25         if (entries < 0) {
26                 perror("read_cache");
27                 exit(1);
28         }
29         for (i = 0; i < entries; i++) {
30                 struct stat st;
31                 struct cache_entry *ce = active_cache[i];
32                 int n, changed;
33                 unsigned long size;
34                 char type[20];
35                 void *new;
36
37                 if (stat(ce->name, &st) < 0) {
38                         printf("%s: %s\n", ce->name, strerror(errno));
39                         continue;
40                 }
41                 changed = cache_match_stat(ce, &st);
42                 if (!changed) {
43                         printf("%s: ok\n", ce->name);
44                         continue;
45                 }
46                 printf("%.*s:  ", ce->namelen, ce->name);
47                 for (n = 0; n < 20; n++)
48                         printf("%02x", ce->sha1[n]);
49                 printf("\n");
50                 new = read_sha1_file(ce->sha1, type, &size);
51                 show_differences(ce, &st, new, size);
52                 free(new);
53         }
54         return 0;
55 }