git-diff-cache: add "-m" flag to match all non-checked-out files with the index.
[git/git.git] / unpack-file.c
1 #include "cache.h"
2
3 static char *create_temp_file(unsigned char *sha1)
4 {
5 static char path[50];
6 void *buf;
7 char type[100];
8 unsigned long size;
9 int fd;
10
11 buf = read_sha1_file(sha1, type, &size);
12 if (!buf || strcmp(type, "blob"))
13 die("unable to read blob object %s", sha1_to_hex(sha1));
14
15 strcpy(path, ".merge_file_XXXXXX");
16 fd = mkstemp(path);
17 if (fd < 0)
18 die("unable to create temp-file");
19 if (write(fd, buf, size) != size)
20 die("unable to write temp-file");
21 close(fd);
22 return path;
23 }
24
25 int main(int argc, char **argv)
26 {
27 unsigned char sha1[20];
28
29 if (argc != 2 || get_sha1(argv[1], sha1))
30 usage("unpack-file.c <sha1>");
31
32 puts(create_temp_file(sha1));
33 return 0;
34 }