git/builtin/unpack-file.c
Stefan Beller cbd53a2193 object-store: move object access functions to object-store.h
This should make these functions easier to find and cache.h less
overwhelming to read.

In particular, this moves:
- read_object_file
- oid_object_info
- write_object_file

As a result, most of the codebase needs to #include object-store.h.
In this patch the #include is only added to files that would fail to
compile otherwise.  It would be better to #include wherever
identifiers from the header are used.  That can happen later
when we have better tooling for it.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-16 11:42:03 +09:00

39 lines
864 B
C

#include "builtin.h"
#include "config.h"
#include "object-store.h"
static char *create_temp_file(struct object_id *oid)
{
static char path[50];
void *buf;
enum object_type type;
unsigned long size;
int fd;
buf = read_object_file(oid, &type, &size);
if (!buf || type != OBJ_BLOB)
die("unable to read blob object %s", oid_to_hex(oid));
xsnprintf(path, sizeof(path), ".merge_file_XXXXXX");
fd = xmkstemp(path);
if (write_in_full(fd, buf, size) < 0)
die_errno("unable to write temp-file");
close(fd);
return path;
}
int cmd_unpack_file(int argc, const char **argv, const char *prefix)
{
struct object_id oid;
if (argc != 2 || !strcmp(argv[1], "-h"))
usage("git unpack-file <sha1>");
if (get_oid(argv[1], &oid))
die("Not a valid object name %s", argv[1]);
git_config(git_default_config, NULL);
puts(create_temp_file(&oid));
return 0;
}