| 1 | #define USE_THE_REPOSITORY_VARIABLE |
| 2 | #include "builtin.h" |
| 3 | #include "config.h" |
| 4 | #include "environment.h" |
| 5 | #include "hex.h" |
| 6 | #include "object-file.h" |
| 7 | #include "object-name.h" |
| 8 | #include "odb.h" |
| 9 | |
| 10 | static char *create_temp_file(struct object_id *oid) |
| 11 | { |
| 12 | static char path[50]; |
| 13 | void *buf; |
| 14 | enum object_type type; |
| 15 | unsigned long size; |
| 16 | int fd; |
| 17 | |
| 18 | buf = odb_read_object(the_repository->objects, oid, &type, &size); |
| 19 | if (!buf || type != OBJ_BLOB) |
| 20 | die("unable to read blob object %s", oid_to_hex(oid)); |
| 21 | |
| 22 | xsnprintf(path, sizeof(path), ".merge_file_XXXXXX"); |
| 23 | fd = xmkstemp(path); |
| 24 | if (write_in_full(fd, buf, size) < 0) |
| 25 | die_errno("unable to write temp-file"); |
| 26 | close(fd); |
| 27 | free(buf); |
| 28 | return path; |
| 29 | } |
| 30 | |
| 31 | static const char usage_msg[] = |
| 32 | "git unpack-file <blob>"; |
| 33 | |
| 34 | int cmd_unpack_file(int argc, |
| 35 | const char **argv, |
| 36 | const char *prefix UNUSED, |
| 37 | struct repository *repo UNUSED) |
| 38 | { |
| 39 | struct object_id oid; |
| 40 | |
| 41 | show_usage_if_asked(argc, argv, usage_msg); |
| 42 | if (argc != 2) |
| 43 | usage(usage_msg); |
| 44 | if (repo_get_oid(the_repository, argv[1], &oid)) |
| 45 | die("Not a valid object name %s", argv[1]); |
| 46 | |
| 47 | repo_config(the_repository, git_default_config, NULL); |
| 48 | |
| 49 | puts(create_temp_file(&oid)); |
| 50 | return 0; |
| 51 | } |