git-commit-vandalism/builtin/unpack-file.c
brian m. carlson c300b1ed5b builtin/unpack-file: convert to struct object_id
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-17 13:54:38 -07:00

38 lines
846 B
C

#include "builtin.h"
#include "config.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_sha1_file(oid->hash, &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) != size)
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;
}