Merge branch 'cc/shared-index-permfix'
[git] / builtin / unpack-file.c
1 #include "builtin.h"
2 #include "config.h"
3
4 static char *create_temp_file(unsigned char *sha1)
5 {
6         static char path[50];
7         void *buf;
8         enum object_type type;
9         unsigned long size;
10         int fd;
11
12         buf = read_sha1_file(sha1, &type, &size);
13         if (!buf || type != OBJ_BLOB)
14                 die("unable to read blob object %s", sha1_to_hex(sha1));
15
16         xsnprintf(path, sizeof(path), ".merge_file_XXXXXX");
17         fd = xmkstemp(path);
18         if (write_in_full(fd, buf, size) != size)
19                 die_errno("unable to write temp-file");
20         close(fd);
21         return path;
22 }
23
24 int cmd_unpack_file(int argc, const char **argv, const char *prefix)
25 {
26         unsigned char sha1[20];
27
28         if (argc != 2 || !strcmp(argv[1], "-h"))
29                 usage("git unpack-file <sha1>");
30         if (get_sha1(argv[1], sha1))
31                 die("Not a valid object name %s", argv[1]);
32
33         git_config(git_default_config, NULL);
34
35         puts(create_temp_file(sha1));
36         return 0;
37 }