10 static const char index_pack_usage
[] =
11 "git-index-pack [-v] [-o <index-file>] [{ ---keep | --keep=<msg> }] { <pack-file> | --stdin [--fix-thin] [<pack-file>] }";
17 unsigned int hdr_size
;
18 enum object_type type
;
19 enum object_type real_type
;
20 unsigned char sha1
[20];
24 unsigned char sha1
[20];
29 * Even if sizeof(union delta_base) == 24 on 64-bit archs, we really want
30 * to memcmp() only the first 20 bytes.
32 #define UNION_BASE_SZ 20
36 union delta_base base
;
40 static struct object_entry
*objects
;
41 static struct delta_entry
*deltas
;
42 static int nr_objects
;
44 static int nr_resolved_deltas
;
46 static int from_stdin
;
49 static volatile sig_atomic_t progress_update
;
51 static void progress_interval(int signum
)
56 static void setup_progress_signal(void)
61 memset(&sa
, 0, sizeof(sa
));
62 sa
.sa_handler
= progress_interval
;
63 sigemptyset(&sa
.sa_mask
);
64 sa
.sa_flags
= SA_RESTART
;
65 sigaction(SIGALRM
, &sa
, NULL
);
67 v
.it_interval
.tv_sec
= 1;
68 v
.it_interval
.tv_usec
= 0;
69 v
.it_value
= v
.it_interval
;
70 setitimer(ITIMER_REAL
, &v
, NULL
);
74 static unsigned display_progress(unsigned n
, unsigned total
, unsigned last_pc
)
76 unsigned percent
= n
* 100 / total
;
77 if (percent
!= last_pc
|| progress_update
) {
78 fprintf(stderr
, "%4u%% (%u/%u) done\r", percent
, n
, total
);
84 /* We always read in 4kB chunks. */
85 static unsigned char input_buffer
[4096];
86 static unsigned int input_offset
, input_len
;
87 static off_t consumed_bytes
;
88 static SHA_CTX input_ctx
;
89 static int input_fd
, output_fd
, pack_fd
;
91 /* Discard current buffer used content. */
92 static void flush(void)
96 write_or_die(output_fd
, input_buffer
, input_offset
);
97 SHA1_Update(&input_ctx
, input_buffer
, input_offset
);
98 memmove(input_buffer
, input_buffer
+ input_offset
, input_len
);
104 * Make sure at least "min" bytes are available in the buffer, and
105 * return the pointer to the buffer.
107 static void *fill(int min
)
109 if (min
<= input_len
)
110 return input_buffer
+ input_offset
;
111 if (min
> sizeof(input_buffer
))
112 die("cannot fill %d bytes", min
);
115 int ret
= xread(input_fd
, input_buffer
+ input_len
,
116 sizeof(input_buffer
) - input_len
);
120 die("read error on input: %s", strerror(errno
));
123 } while (input_len
< min
);
127 static void use(int bytes
)
129 if (bytes
> input_len
)
130 die("used more bytes than were available");
132 input_offset
+= bytes
;
134 /* make sure off_t is sufficiently large not to wrap */
135 if (consumed_bytes
> consumed_bytes
+ bytes
)
136 die("pack too large for current definition of off_t");
137 consumed_bytes
+= bytes
;
140 static const char *open_pack_file(const char *pack_name
)
145 static char tmpfile
[PATH_MAX
];
146 snprintf(tmpfile
, sizeof(tmpfile
),
147 "%s/tmp_pack_XXXXXX", get_object_directory());
148 output_fd
= mkstemp(tmpfile
);
149 pack_name
= xstrdup(tmpfile
);
151 output_fd
= open(pack_name
, O_CREAT
|O_EXCL
|O_RDWR
, 0600);
153 die("unable to create %s: %s\n", pack_name
, strerror(errno
));
156 input_fd
= open(pack_name
, O_RDONLY
);
158 die("cannot open packfile '%s': %s",
159 pack_name
, strerror(errno
));
163 SHA1_Init(&input_ctx
);
167 static void parse_pack_header(void)
169 struct pack_header
*hdr
= fill(sizeof(struct pack_header
));
171 /* Header consistency check */
172 if (hdr
->hdr_signature
!= htonl(PACK_SIGNATURE
))
173 die("pack signature mismatch");
174 if (!pack_version_ok(hdr
->hdr_version
))
175 die("pack version %d unsupported", ntohl(hdr
->hdr_version
));
177 nr_objects
= ntohl(hdr
->hdr_entries
);
178 use(sizeof(struct pack_header
));
181 static void bad_object(unsigned long offset
, const char *format
,
182 ...) NORETURN
__attribute__((format (printf
, 2, 3)));
184 static void bad_object(unsigned long offset
, const char *format
, ...)
189 va_start(params
, format
);
190 vsnprintf(buf
, sizeof(buf
), format
, params
);
192 die("pack has bad object at offset %lu: %s", offset
, buf
);
195 static void *unpack_entry_data(unsigned long offset
, unsigned long size
)
198 void *buf
= xmalloc(size
);
200 memset(&stream
, 0, sizeof(stream
));
201 stream
.next_out
= buf
;
202 stream
.avail_out
= size
;
203 stream
.next_in
= fill(1);
204 stream
.avail_in
= input_len
;
205 inflateInit(&stream
);
208 int ret
= inflate(&stream
, 0);
209 use(input_len
- stream
.avail_in
);
210 if (stream
.total_out
== size
&& ret
== Z_STREAM_END
)
213 bad_object(offset
, "inflate returned %d", ret
);
214 stream
.next_in
= fill(1);
215 stream
.avail_in
= input_len
;
221 static void *unpack_raw_entry(struct object_entry
*obj
, union delta_base
*delta_base
)
228 obj
->offset
= consumed_bytes
;
233 obj
->type
= (c
>> 4) & 7;
240 size
+= (c
& 0x7fUL
) << shift
;
247 hashcpy(delta_base
->sha1
, fill(20));
251 memset(delta_base
, 0, sizeof(*delta_base
));
255 base_offset
= c
& 127;
258 if (!base_offset
|| MSB(base_offset
, 7))
259 bad_object(obj
->offset
, "offset value overflow for delta base object");
263 base_offset
= (base_offset
<< 7) + (c
& 127);
265 delta_base
->offset
= obj
->offset
- base_offset
;
266 if (delta_base
->offset
>= obj
->offset
)
267 bad_object(obj
->offset
, "delta base offset is out of bound");
275 bad_object(obj
->offset
, "unknown object type %d", obj
->type
);
277 obj
->hdr_size
= consumed_bytes
- obj
->offset
;
279 return unpack_entry_data(obj
->offset
, obj
->size
);
282 static void *get_data_from_pack(struct object_entry
*obj
)
284 unsigned long from
= obj
[0].offset
+ obj
[0].hdr_size
;
285 unsigned long len
= obj
[1].offset
- from
;
286 unsigned long rdy
= 0;
287 unsigned char *src
, *data
;
294 ssize_t n
= pread(pack_fd
, data
+ rdy
, len
- rdy
, from
+ rdy
);
296 die("cannot pread pack file: %s", strerror(errno
));
299 data
= xmalloc(obj
->size
);
300 memset(&stream
, 0, sizeof(stream
));
301 stream
.next_out
= data
;
302 stream
.avail_out
= obj
->size
;
303 stream
.next_in
= src
;
304 stream
.avail_in
= len
;
305 inflateInit(&stream
);
306 while ((st
= inflate(&stream
, Z_FINISH
)) == Z_OK
);
308 if (st
!= Z_STREAM_END
|| stream
.total_out
!= obj
->size
)
309 die("serious inflate inconsistency");
314 static int find_delta(const union delta_base
*base
)
316 int first
= 0, last
= nr_deltas
;
318 while (first
< last
) {
319 int next
= (first
+ last
) / 2;
320 struct delta_entry
*delta
= &deltas
[next
];
323 cmp
= memcmp(base
, &delta
->base
, UNION_BASE_SZ
);
335 static int find_delta_children(const union delta_base
*base
,
336 int *first_index
, int *last_index
)
338 int first
= find_delta(base
);
340 int end
= nr_deltas
- 1;
344 while (first
> 0 && !memcmp(&deltas
[first
- 1].base
, base
, UNION_BASE_SZ
))
346 while (last
< end
&& !memcmp(&deltas
[last
+ 1].base
, base
, UNION_BASE_SZ
))
348 *first_index
= first
;
353 static void sha1_object(const void *data
, unsigned long size
,
354 enum object_type type
, unsigned char *sha1
)
356 hash_sha1_file(data
, size
, typename(type
), sha1
);
357 if (has_sha1_file(sha1
)) {
359 enum object_type has_type
;
360 unsigned long has_size
;
361 has_data
= read_sha1_file(sha1
, &has_type
, &has_size
);
363 die("cannot read existing object %s", sha1_to_hex(sha1
));
364 if (size
!= has_size
|| type
!= has_type
||
365 memcmp(data
, has_data
, size
) != 0)
366 die("SHA1 COLLISION FOUND WITH %s !", sha1_to_hex(sha1
));
371 static void resolve_delta(struct object_entry
*delta_obj
, void *base_data
,
372 unsigned long base_size
, enum object_type type
)
375 unsigned long delta_size
;
377 unsigned long result_size
;
378 union delta_base delta_base
;
381 delta_obj
->real_type
= type
;
382 delta_data
= get_data_from_pack(delta_obj
);
383 delta_size
= delta_obj
->size
;
384 result
= patch_delta(base_data
, base_size
, delta_data
, delta_size
,
388 bad_object(delta_obj
->offset
, "failed to apply delta");
389 sha1_object(result
, result_size
, type
, delta_obj
->sha1
);
390 nr_resolved_deltas
++;
392 hashcpy(delta_base
.sha1
, delta_obj
->sha1
);
393 if (!find_delta_children(&delta_base
, &first
, &last
)) {
394 for (j
= first
; j
<= last
; j
++) {
395 struct object_entry
*child
= objects
+ deltas
[j
].obj_no
;
396 if (child
->real_type
== OBJ_REF_DELTA
)
397 resolve_delta(child
, result
, result_size
, type
);
401 memset(&delta_base
, 0, sizeof(delta_base
));
402 delta_base
.offset
= delta_obj
->offset
;
403 if (!find_delta_children(&delta_base
, &first
, &last
)) {
404 for (j
= first
; j
<= last
; j
++) {
405 struct object_entry
*child
= objects
+ deltas
[j
].obj_no
;
406 if (child
->real_type
== OBJ_OFS_DELTA
)
407 resolve_delta(child
, result
, result_size
, type
);
414 static int compare_delta_entry(const void *a
, const void *b
)
416 const struct delta_entry
*delta_a
= a
;
417 const struct delta_entry
*delta_b
= b
;
418 return memcmp(&delta_a
->base
, &delta_b
->base
, UNION_BASE_SZ
);
421 /* Parse all objects and return the pack content SHA1 hash */
422 static void parse_pack_objects(unsigned char *sha1
)
425 struct delta_entry
*delta
= deltas
;
431 * - find locations of all objects;
432 * - calculate SHA1 of all non-delta objects;
433 * - remember base (SHA1 or offset) for all deltas.
436 fprintf(stderr
, "Indexing %d objects.\n", nr_objects
);
437 for (i
= 0; i
< nr_objects
; i
++) {
438 struct object_entry
*obj
= &objects
[i
];
439 data
= unpack_raw_entry(obj
, &delta
->base
);
440 obj
->real_type
= obj
->type
;
441 if (obj
->type
== OBJ_REF_DELTA
|| obj
->type
== OBJ_OFS_DELTA
) {
446 sha1_object(data
, obj
->size
, obj
->type
, obj
->sha1
);
449 percent
= display_progress(i
+1, nr_objects
, percent
);
451 objects
[i
].offset
= consumed_bytes
;
455 /* Check pack integrity */
457 SHA1_Final(sha1
, &input_ctx
);
458 if (hashcmp(fill(20), sha1
))
459 die("pack is corrupted (SHA1 mismatch)");
462 /* If input_fd is a file, we should have reached its end now. */
463 if (fstat(input_fd
, &st
))
464 die("cannot fstat packfile: %s", strerror(errno
));
465 if (S_ISREG(st
.st_mode
) &&
466 lseek(input_fd
, 0, SEEK_CUR
) - input_len
!= st
.st_size
)
467 die("pack has junk at the end");
472 /* Sort deltas by base SHA1/offset for fast searching */
473 qsort(deltas
, nr_deltas
, sizeof(struct delta_entry
),
474 compare_delta_entry
);
478 * - for all non-delta objects, look if it is used as a base for
480 * - if used as a base, uncompress the object and apply all deltas,
481 * recursively checking if the resulting object is used as a base
482 * for some more deltas.
485 fprintf(stderr
, "Resolving %d deltas.\n", nr_deltas
);
486 for (i
= 0; i
< nr_objects
; i
++) {
487 struct object_entry
*obj
= &objects
[i
];
488 union delta_base base
;
489 int j
, ref
, ref_first
, ref_last
, ofs
, ofs_first
, ofs_last
;
491 if (obj
->type
== OBJ_REF_DELTA
|| obj
->type
== OBJ_OFS_DELTA
)
493 hashcpy(base
.sha1
, obj
->sha1
);
494 ref
= !find_delta_children(&base
, &ref_first
, &ref_last
);
495 memset(&base
, 0, sizeof(base
));
496 base
.offset
= obj
->offset
;
497 ofs
= !find_delta_children(&base
, &ofs_first
, &ofs_last
);
500 data
= get_data_from_pack(obj
);
502 for (j
= ref_first
; j
<= ref_last
; j
++) {
503 struct object_entry
*child
= objects
+ deltas
[j
].obj_no
;
504 if (child
->real_type
== OBJ_REF_DELTA
)
505 resolve_delta(child
, data
,
506 obj
->size
, obj
->type
);
509 for (j
= ofs_first
; j
<= ofs_last
; j
++) {
510 struct object_entry
*child
= objects
+ deltas
[j
].obj_no
;
511 if (child
->real_type
== OBJ_OFS_DELTA
)
512 resolve_delta(child
, data
,
513 obj
->size
, obj
->type
);
517 percent
= display_progress(nr_resolved_deltas
,
520 if (verbose
&& nr_resolved_deltas
== nr_deltas
)
524 static int write_compressed(int fd
, void *in
, unsigned int size
)
527 unsigned long maxsize
;
530 memset(&stream
, 0, sizeof(stream
));
531 deflateInit(&stream
, zlib_compression_level
);
532 maxsize
= deflateBound(&stream
, size
);
533 out
= xmalloc(maxsize
);
537 stream
.avail_in
= size
;
538 stream
.next_out
= out
;
539 stream
.avail_out
= maxsize
;
540 while (deflate(&stream
, Z_FINISH
) == Z_OK
);
543 size
= stream
.total_out
;
544 write_or_die(fd
, out
, size
);
549 static void append_obj_to_pack(const unsigned char *sha1
, void *buf
,
550 unsigned long size
, enum object_type type
)
552 struct object_entry
*obj
= &objects
[nr_objects
++];
553 unsigned char header
[10];
554 unsigned long s
= size
;
556 unsigned char c
= (type
<< 4) | (s
& 15);
559 header
[n
++] = c
| 0x80;
564 write_or_die(output_fd
, header
, n
);
565 obj
[1].offset
= obj
[0].offset
+ n
;
566 obj
[1].offset
+= write_compressed(output_fd
, buf
, size
);
567 hashcpy(obj
->sha1
, sha1
);
570 static int delta_pos_compare(const void *_a
, const void *_b
)
572 struct delta_entry
*a
= *(struct delta_entry
**)_a
;
573 struct delta_entry
*b
= *(struct delta_entry
**)_b
;
574 return a
->obj_no
- b
->obj_no
;
577 static void fix_unresolved_deltas(int nr_unresolved
)
579 struct delta_entry
**sorted_by_pos
;
580 int i
, n
= 0, percent
= -1;
583 * Since many unresolved deltas may well be themselves base objects
584 * for more unresolved deltas, we really want to include the
585 * smallest number of base objects that would cover as much delta
586 * as possible by picking the
587 * trunc deltas first, allowing for other deltas to resolve without
588 * additional base objects. Since most base objects are to be found
589 * before deltas depending on them, a good heuristic is to start
590 * resolving deltas in the same order as their position in the pack.
592 sorted_by_pos
= xmalloc(nr_unresolved
* sizeof(*sorted_by_pos
));
593 for (i
= 0; i
< nr_deltas
; i
++) {
594 if (objects
[deltas
[i
].obj_no
].real_type
!= OBJ_REF_DELTA
)
596 sorted_by_pos
[n
++] = &deltas
[i
];
598 qsort(sorted_by_pos
, n
, sizeof(*sorted_by_pos
), delta_pos_compare
);
600 for (i
= 0; i
< n
; i
++) {
601 struct delta_entry
*d
= sorted_by_pos
[i
];
604 enum object_type type
;
607 if (objects
[d
->obj_no
].real_type
!= OBJ_REF_DELTA
)
609 data
= read_sha1_file(d
->base
.sha1
, &type
, &size
);
613 find_delta_children(&d
->base
, &first
, &last
);
614 for (j
= first
; j
<= last
; j
++) {
615 struct object_entry
*child
= objects
+ deltas
[j
].obj_no
;
616 if (child
->real_type
== OBJ_REF_DELTA
)
617 resolve_delta(child
, data
, size
, type
);
620 if (check_sha1_signature(d
->base
.sha1
, data
, size
, typename(type
)))
621 die("local object %s is corrupt", sha1_to_hex(d
->base
.sha1
));
622 append_obj_to_pack(d
->base
.sha1
, data
, size
, type
);
625 percent
= display_progress(nr_resolved_deltas
,
633 static void readjust_pack_header_and_sha1(unsigned char *sha1
)
635 struct pack_header hdr
;
639 /* Rewrite pack header with updated object number */
640 if (lseek(output_fd
, 0, SEEK_SET
) != 0)
641 die("cannot seek back: %s", strerror(errno
));
642 if (read_in_full(output_fd
, &hdr
, sizeof(hdr
)) != sizeof(hdr
))
643 die("cannot read pack header back: %s", strerror(errno
));
644 hdr
.hdr_entries
= htonl(nr_objects
);
645 if (lseek(output_fd
, 0, SEEK_SET
) != 0)
646 die("cannot seek back: %s", strerror(errno
));
647 write_or_die(output_fd
, &hdr
, sizeof(hdr
));
648 if (lseek(output_fd
, 0, SEEK_SET
) != 0)
649 die("cannot seek back: %s", strerror(errno
));
651 /* Recompute and store the new pack's SHA1 */
654 unsigned char *buf
[4096];
655 size
= xread(output_fd
, buf
, sizeof(buf
));
657 die("cannot read pack data back: %s", strerror(errno
));
658 SHA1_Update(&ctx
, buf
, size
);
660 SHA1_Final(sha1
, &ctx
);
661 write_or_die(output_fd
, sha1
, 20);
664 static int sha1_compare(const void *_a
, const void *_b
)
666 struct object_entry
*a
= *(struct object_entry
**)_a
;
667 struct object_entry
*b
= *(struct object_entry
**)_b
;
668 return hashcmp(a
->sha1
, b
->sha1
);
672 * On entry *sha1 contains the pack content SHA1 hash, on exit it is
673 * the SHA1 hash of sorted object names.
675 static const char *write_index_file(const char *index_name
, unsigned char *sha1
)
678 struct object_entry
**sorted_by_sha
, **list
, **last
;
679 unsigned int array
[256];
685 xcalloc(nr_objects
, sizeof(struct object_entry
*));
686 list
= sorted_by_sha
;
687 last
= sorted_by_sha
+ nr_objects
;
688 for (i
= 0; i
< nr_objects
; ++i
)
689 sorted_by_sha
[i
] = &objects
[i
];
690 qsort(sorted_by_sha
, nr_objects
, sizeof(sorted_by_sha
[0]),
695 sorted_by_sha
= list
= last
= NULL
;
698 static char tmpfile
[PATH_MAX
];
699 snprintf(tmpfile
, sizeof(tmpfile
),
700 "%s/tmp_idx_XXXXXX", get_object_directory());
701 fd
= mkstemp(tmpfile
);
702 index_name
= xstrdup(tmpfile
);
705 fd
= open(index_name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
708 die("unable to create %s: %s", index_name
, strerror(errno
));
709 f
= sha1fd(fd
, index_name
);
712 * Write the first-level table (the list is sorted,
713 * but we use a 256-entry lookup to be able to avoid
714 * having to do eight extra binary search iterations).
716 for (i
= 0; i
< 256; i
++) {
717 struct object_entry
**next
= list
;
718 while (next
< last
) {
719 struct object_entry
*obj
= *next
;
720 if (obj
->sha1
[0] != i
)
724 array
[i
] = htonl(next
- sorted_by_sha
);
727 sha1write(f
, array
, 256 * sizeof(int));
729 /* recompute the SHA1 hash of sorted object names.
730 * currently pack-objects does not do this, but that
735 * Write the actual SHA1 entries..
737 list
= sorted_by_sha
;
738 for (i
= 0; i
< nr_objects
; i
++) {
739 struct object_entry
*obj
= *list
++;
740 unsigned int offset
= htonl(obj
->offset
);
741 sha1write(f
, &offset
, 4);
742 sha1write(f
, obj
->sha1
, 20);
743 SHA1_Update(&ctx
, obj
->sha1
, 20);
745 sha1write(f
, sha1
, 20);
746 sha1close(f
, NULL
, 1);
748 SHA1_Final(sha1
, &ctx
);
752 static void final(const char *final_pack_name
, const char *curr_pack_name
,
753 const char *final_index_name
, const char *curr_index_name
,
754 const char *keep_name
, const char *keep_msg
,
757 const char *report
= "pack";
764 err
= close(output_fd
);
766 die("error while closing pack file: %s", strerror(errno
));
767 chmod(curr_pack_name
, 0444);
771 int keep_fd
, keep_msg_len
= strlen(keep_msg
);
773 snprintf(name
, sizeof(name
), "%s/pack/pack-%s.keep",
774 get_object_directory(), sha1_to_hex(sha1
));
777 keep_fd
= open(keep_name
, O_RDWR
|O_CREAT
|O_EXCL
, 0600);
780 die("cannot write keep file");
782 if (keep_msg_len
> 0) {
783 write_or_die(keep_fd
, keep_msg
, keep_msg_len
);
784 write_or_die(keep_fd
, "\n", 1);
791 if (final_pack_name
!= curr_pack_name
) {
792 if (!final_pack_name
) {
793 snprintf(name
, sizeof(name
), "%s/pack/pack-%s.pack",
794 get_object_directory(), sha1_to_hex(sha1
));
795 final_pack_name
= name
;
797 if (move_temp_to_file(curr_pack_name
, final_pack_name
))
798 die("cannot store pack file");
801 chmod(curr_index_name
, 0444);
802 if (final_index_name
!= curr_index_name
) {
803 if (!final_index_name
) {
804 snprintf(name
, sizeof(name
), "%s/pack/pack-%s.idx",
805 get_object_directory(), sha1_to_hex(sha1
));
806 final_index_name
= name
;
808 if (move_temp_to_file(curr_index_name
, final_index_name
))
809 die("cannot store index file");
813 printf("%s\n", sha1_to_hex(sha1
));
816 int len
= snprintf(buf
, sizeof(buf
), "%s\t%s\n",
817 report
, sha1_to_hex(sha1
));
818 write_or_die(1, buf
, len
);
821 * Let's just mimic git-unpack-objects here and write
822 * the last part of the input buffer to stdout.
825 err
= xwrite(1, input_buffer
+ input_offset
, input_len
);
834 int main(int argc
, char **argv
)
836 int i
, fix_thin_pack
= 0;
837 const char *curr_pack
, *pack_name
= NULL
;
838 const char *curr_index
, *index_name
= NULL
;
839 const char *keep_name
= NULL
, *keep_msg
= NULL
;
840 char *index_name_buf
= NULL
, *keep_name_buf
= NULL
;
841 unsigned char sha1
[20];
843 for (i
= 1; i
< argc
; i
++) {
844 const char *arg
= argv
[i
];
847 if (!strcmp(arg
, "--stdin")) {
849 } else if (!strcmp(arg
, "--fix-thin")) {
851 } else if (!strcmp(arg
, "--keep")) {
853 } else if (!prefixcmp(arg
, "--keep=")) {
855 } else if (!prefixcmp(arg
, "--pack_header=")) {
856 struct pack_header
*hdr
;
859 hdr
= (struct pack_header
*)input_buffer
;
860 hdr
->hdr_signature
= htonl(PACK_SIGNATURE
);
861 hdr
->hdr_version
= htonl(strtoul(arg
+ 14, &c
, 10));
864 hdr
->hdr_entries
= htonl(strtoul(c
+ 1, &c
, 10));
867 input_len
= sizeof(*hdr
);
868 } else if (!strcmp(arg
, "-v")) {
870 } else if (!strcmp(arg
, "-o")) {
871 if (index_name
|| (i
+1) >= argc
)
872 usage(index_pack_usage
);
873 index_name
= argv
[++i
];
875 usage(index_pack_usage
);
880 usage(index_pack_usage
);
884 if (!pack_name
&& !from_stdin
)
885 usage(index_pack_usage
);
886 if (fix_thin_pack
&& !from_stdin
)
887 die("--fix-thin cannot be used without --stdin");
888 if (!index_name
&& pack_name
) {
889 int len
= strlen(pack_name
);
890 if (!has_extension(pack_name
, ".pack"))
891 die("packfile name '%s' does not end with '.pack'",
893 index_name_buf
= xmalloc(len
);
894 memcpy(index_name_buf
, pack_name
, len
- 5);
895 strcpy(index_name_buf
+ len
- 5, ".idx");
896 index_name
= index_name_buf
;
898 if (keep_msg
&& !keep_name
&& pack_name
) {
899 int len
= strlen(pack_name
);
900 if (!has_extension(pack_name
, ".pack"))
901 die("packfile name '%s' does not end with '.pack'",
903 keep_name_buf
= xmalloc(len
);
904 memcpy(keep_name_buf
, pack_name
, len
- 5);
905 strcpy(keep_name_buf
+ len
- 5, ".keep");
906 keep_name
= keep_name_buf
;
909 curr_pack
= open_pack_file(pack_name
);
911 objects
= xmalloc((nr_objects
+ 1) * sizeof(struct object_entry
));
912 deltas
= xmalloc(nr_objects
* sizeof(struct delta_entry
));
914 setup_progress_signal();
915 parse_pack_objects(sha1
);
916 if (nr_deltas
!= nr_resolved_deltas
) {
918 int nr_unresolved
= nr_deltas
- nr_resolved_deltas
;
919 int nr_objects_initial
= nr_objects
;
920 if (nr_unresolved
<= 0)
921 die("confusion beyond insanity");
922 objects
= xrealloc(objects
,
923 (nr_objects
+ nr_unresolved
+ 1)
925 fix_unresolved_deltas(nr_unresolved
);
927 fprintf(stderr
, "%d objects were added to complete this thin pack.\n",
928 nr_objects
- nr_objects_initial
);
929 readjust_pack_header_and_sha1(sha1
);
931 if (nr_deltas
!= nr_resolved_deltas
)
932 die("pack has %d unresolved deltas",
933 nr_deltas
- nr_resolved_deltas
);
935 /* Flush remaining pack final 20-byte SHA1. */
939 curr_index
= write_index_file(index_name
, sha1
);
940 final(pack_name
, curr_pack
,
941 index_name
, curr_index
,
945 free(index_name_buf
);