1 #include "builtin.h"
2 #include "config.h"
3 #include "object-store.h"
4
create_temp_file(struct object_id * oid)5 static char *create_temp_file(struct object_id *oid)
6 {
7 static char path[50];
8 void *buf;
9 enum object_type type;
10 unsigned long size;
11 int fd;
12
13 buf = read_object_file(oid, &type, &size);
14 if (!buf || type != OBJ_BLOB)
15 die("unable to read blob object %s", oid_to_hex(oid));
16
17 xsnprintf(path, sizeof(path), ".merge_file_XXXXXX");
18 fd = xmkstemp(path);
19 if (write_in_full(fd, buf, size) < 0)
20 die_errno("unable to write temp-file");
21 close(fd);
22 return path;
23 }
24
cmd_unpack_file(int argc,const char ** argv,const char * prefix)25 int cmd_unpack_file(int argc, const char **argv, const char *prefix)
26 {
27 struct object_id oid;
28
29 if (argc != 2 || !strcmp(argv[1], "-h"))
30 usage("git unpack-file <sha1>");
31 if (get_oid(argv[1], &oid))
32 die("Not a valid object name %s", argv[1]);
33
34 git_config(git_default_config, NULL);
35
36 puts(create_temp_file(&oid));
37 return 0;
38 }
39