| 432 | } |
| 433 | |
| 434 | static void unpack_delta_entry(enum object_type type, unsigned long delta_size, |
| 435 | unsigned nr) |
| 436 | { |
| 437 | void *delta_data, *base; |
| 438 | unsigned long base_size; |
| 439 | size_t base_size_st = 0; |
| 440 | struct object_id base_oid; |
| 441 | |
| 442 | if (type == OBJ_REF_DELTA) { |
| 443 | oidread(&base_oid, fill(the_hash_algo->rawsz), the_repository->hash_algo); |
| 444 | use(the_hash_algo->rawsz); |
| 445 | delta_data = get_data(delta_size); |
| 446 | if (!delta_data) |
| 447 | return; |
| 448 | if (odb_has_object(the_repository->objects, &base_oid, |
| 449 | ODB_HAS_OBJECT_RECHECK_PACKED | ODB_HAS_OBJECT_FETCH_PROMISOR)) |
| 450 | ; /* Ok we have this one */ |
| 451 | else if (resolve_against_held(nr, &base_oid, |
| 452 | delta_data, delta_size)) |
| 453 | return; /* we are done */ |
| 454 | else { |
| 455 | /* cannot resolve yet --- queue it */ |
| 456 | oidclr(&obj_list[nr].oid, the_repository->hash_algo); |
| 457 | add_delta_to_list(nr, &base_oid, 0, delta_data, delta_size); |
| 458 | return; |
| 459 | } |
| 460 | } else { |
| 461 | unsigned base_found = 0; |
| 462 | unsigned char *pack, c; |
| 463 | off_t base_offset; |
| 464 | unsigned lo, mid, hi; |
| 465 | |
| 466 | pack = fill(1); |
| 467 | c = *pack; |
| 468 | use(1); |
| 469 | base_offset = c & 127; |
| 470 | while (c & 128) { |
| 471 | base_offset += 1; |
| 472 | if (!base_offset || MSB(base_offset, 7)) |
| 473 | die("offset value overflow for delta base object"); |
| 474 | pack = fill(1); |
| 475 | c = *pack; |
| 476 | use(1); |
| 477 | base_offset = (base_offset << 7) + (c & 127); |
| 478 | } |
| 479 | base_offset = obj_list[nr].offset - base_offset; |
| 480 | if (base_offset <= 0 || base_offset >= obj_list[nr].offset) |
| 481 | die("offset value out of bound for delta base object"); |
| 482 | |
| 483 | delta_data = get_data(delta_size); |
| 484 | if (!delta_data) |
| 485 | return; |
| 486 | lo = 0; |
| 487 | hi = nr; |
| 488 | while (lo < hi) { |
| 489 | mid = lo + (hi - lo) / 2; |
| 490 | if (base_offset < obj_list[mid].offset) { |
| 491 | hi = mid; |
no test coverage detected