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