builtin/rev-list.c

   1 #define USE_THE_REPOSITORY_VARIABLE
   2 #include "builtin.h"
   3 #include "config.h"
   4 #include "commit.h"
   5 #include "diff.h"
   6 #include "environment.h"
   7 #include "gettext.h"
   8 #include "hex.h"
   9 #include "revision.h"
  10 #include "list-objects.h"
  11 #include "list-objects-filter-options.h"
  12 #include "object.h"
  13 #include "object-name.h"
  14 #include "object-file.h"
  15 #include "object-store-ll.h"
  16 #include "pack-bitmap.h"
  17 #include "log-tree.h"
  18 #include "graph.h"
  19 #include "bisect.h"
  20 #include "progress.h"
  21 #include "reflog-walk.h"
  22 #include "oidset.h"
  23 #include "packfile.h"
  24
  25 static const char rev_list_usage[] =
  26 "git rev-list [<options>] <commit>... [--] [<path>...]\n"
  27 "\n"
  28 "  limiting output:\n"
  29 "    --max-count=<n>\n"
  30 "    --max-age=<epoch>\n"
  31 "    --min-age=<epoch>\n"
  32 "    --sparse\n"
  33 "    --no-merges\n"
  34 "    --min-parents=<n>\n"
  35 "    --no-min-parents\n"
  36 "    --max-parents=<n>\n"
  37 "    --no-max-parents\n"
  38 "    --remove-empty\n"
  39 "    --all\n"
  40 "    --branches\n"
  41 "    --tags\n"
  42 "    --remotes\n"
  43 "    --stdin\n"
  44 "    --exclude-hidden=[fetch|receive|uploadpack]\n"
  45 "    --quiet\n"
  46 "  ordering output:\n"
  47 "    --topo-order\n"
  48 "    --date-order\n"
  49 "    --reverse\n"
  50 "  formatting output:\n"
  51 "    --parents\n"
  52 "    --children\n"
  53 "    --objects | --objects-edge\n"
  54 "    --disk-usage[=human]\n"
  55 "    --unpacked\n"
  56 "    --header | --pretty\n"
  57 "    --[no-]object-names\n"
  58 "    --abbrev=<n> | --no-abbrev\n"
  59 "    --abbrev-commit\n"
  60 "    --left-right\n"
  61 "    --count\n"
  62 "  special purpose:\n"
  63 "    --bisect\n"
  64 "    --bisect-vars\n"
  65 "    --bisect-all"
  66 ;
  67
  68 static struct progress *progress;
  69 static unsigned progress_counter;
  70
  71 static struct oidset omitted_objects;
  72 static int arg_print_omitted; /* print objects omitted by filter */
  73
  74 static struct oidset missing_objects;
  75 enum missing_action {
  76         MA_ERROR = 0,    /* fail if any missing objects are encountered */
  77         MA_ALLOW_ANY,    /* silently allow ALL missing objects */
  78         MA_PRINT,        /* print ALL missing objects in special section */
  79         MA_ALLOW_PROMISOR, /* silently allow all missing PROMISOR objects */
  80 };
  81 static enum missing_action arg_missing_action;
  82
  83 /* display only the oid of each object encountered */
  84 static int arg_show_object_names = 1;
  85
  86 #define DEFAULT_OIDSET_SIZE     (16*1024)
  87
  88 static int show_disk_usage;
  89 static off_t total_disk_usage;
  90 static int human_readable;
  91
  92 static off_t get_object_disk_usage(struct object *obj)
  93 {
  94         off_t size;
  95         struct object_info oi = OBJECT_INFO_INIT;
  96         oi.disk_sizep = &size;
  97         if (oid_object_info_extended(the_repository, &obj->oid, &oi, 0) < 0)
  98                 die(_("unable to get disk usage of %s"), oid_to_hex(&obj->oid));
  99         return size;
 100 }
 101
 102 static inline void finish_object__ma(struct object *obj)
 103 {
 104         /*
 105          * Whether or not we try to dynamically fetch missing objects
 106          * from the server, we currently DO NOT have the object.  We
 107          * can either print, allow (ignore), or conditionally allow
 108          * (ignore) them.
 109          */
 110         switch (arg_missing_action) {
 111         case MA_ERROR:
 112                 die("missing %s object '%s'",
 113                     type_name(obj->type), oid_to_hex(&obj->oid));
 114                 return;
 115
 116         case MA_ALLOW_ANY:
 117                 return;
 118
 119         case MA_PRINT:
 120                 oidset_insert(&missing_objects, &obj->oid);
 121                 return;
 122
 123         case MA_ALLOW_PROMISOR:
 124                 if (is_promisor_object(&obj->oid))
 125                         return;
 126                 die("unexpected missing %s object '%s'",
 127                     type_name(obj->type), oid_to_hex(&obj->oid));
 128                 return;
 129
 130         default:
 131                 BUG("unhandled missing_action");
 132                 return;
 133         }
 134 }
 135
 136 static void finish_commit(struct commit *commit)
 137 {
 138         free_commit_list(commit->parents);
 139         commit->parents = NULL;
 140         free_commit_buffer(the_repository->parsed_objects,
 141                            commit);
 142 }
 143
 144 static void show_commit(struct commit *commit, void *data)
 145 {
 146         struct rev_list_info *info = data;
 147         struct rev_info *revs = info->revs;
 148
 149         display_progress(progress, ++progress_counter);
 150
 151         if (revs->do_not_die_on_missing_objects &&
 152             oidset_contains(&revs->missing_commits, &commit->object.oid)) {
 153                 finish_object__ma(&commit->object);
 154                 return;
 155         }
 156
 157         if (show_disk_usage)
 158                 total_disk_usage += get_object_disk_usage(&commit->object);
 159
 160         if (info->flags & REV_LIST_QUIET) {
 161                 finish_commit(commit);
 162                 return;
 163         }
 164
 165         graph_show_commit(revs->graph);
 166
 167         if (revs->count) {
 168                 if (commit->object.flags & PATCHSAME)
 169                         revs->count_same++;
 170                 else if (commit->object.flags & SYMMETRIC_LEFT)
 171                         revs->count_left++;
 172                 else
 173                         revs->count_right++;
 174                 finish_commit(commit);
 175                 return;
 176         }
 177
 178         if (info->show_timestamp)
 179                 printf("%"PRItime" ", commit->date);
 180         if (info->header_prefix)
 181                 fputs(info->header_prefix, stdout);
 182
 183         if (revs->include_header) {
 184                 if (!revs->graph)
 185                         fputs(get_revision_mark(revs, commit), stdout);
 186                 if (revs->abbrev_commit && revs->abbrev)
 187                         fputs(repo_find_unique_abbrev(the_repository, &commit->object.oid, revs->abbrev),
 188                               stdout);
 189                 else
 190                         fputs(oid_to_hex(&commit->object.oid), stdout);
 191         }
 192         if (revs->print_parents) {
 193                 struct commit_list *parents = commit->parents;
 194                 while (parents) {
 195                         printf(" %s", oid_to_hex(&parents->item->object.oid));
 196                         parents = parents->next;
 197                 }
 198         }
 199         if (revs->children.name) {
 200                 struct commit_list *children;
 201
 202                 children = lookup_decoration(&revs->children, &commit->object);
 203                 while (children) {
 204                         printf(" %s", oid_to_hex(&children->item->object.oid));
 205                         children = children->next;
 206                 }
 207         }
 208         show_decorations(revs, commit);
 209         if (revs->commit_format == CMIT_FMT_ONELINE)
 210                 putchar(' ');
 211         else if (revs->include_header)
 212                 putchar('\n');
 213
 214         if (revs->verbose_header) {
 215                 struct strbuf buf = STRBUF_INIT;
 216                 struct pretty_print_context ctx = {0};
 217                 ctx.abbrev = revs->abbrev;
 218                 ctx.date_mode = revs->date_mode;
 219                 ctx.date_mode_explicit = revs->date_mode_explicit;
 220                 ctx.fmt = revs->commit_format;
 221                 ctx.output_encoding = get_log_output_encoding();
 222                 ctx.color = revs->diffopt.use_color;
 223                 ctx.rev = revs;
 224                 pretty_print_commit(&ctx, commit, &buf);
 225                 if (buf.len) {
 226                         if (revs->commit_format != CMIT_FMT_ONELINE)
 227                                 graph_show_oneline(revs->graph);
 228
 229                         graph_show_commit_msg(revs->graph, stdout, &buf);
 230
 231                         /*
 232                          * Add a newline after the commit message.
 233                          *
 234                          * Usually, this newline produces a blank
 235                          * padding line between entries, in which case
 236                          * we need to add graph padding on this line.
 237                          *
 238                          * However, the commit message may not end in a
 239                          * newline.  In this case the newline simply
 240                          * ends the last line of the commit message,
 241                          * and we don't need any graph output.  (This
 242                          * always happens with CMIT_FMT_ONELINE, and it
 243                          * happens with CMIT_FMT_USERFORMAT when the
 244                          * format doesn't explicitly end in a newline.)
 245                          */
 246                         if (buf.len && buf.buf[buf.len - 1] == '\n')
 247                                 graph_show_padding(revs->graph);
 248                         putchar(info->hdr_termination);
 249                 } else {
 250                         /*
 251                          * If the message buffer is empty, just show
 252                          * the rest of the graph output for this
 253                          * commit.
 254                          */
 255                         if (graph_show_remainder(revs->graph))
 256                                 putchar('\n');
 257                         if (revs->commit_format == CMIT_FMT_ONELINE)
 258                                 putchar('\n');
 259                 }
 260                 strbuf_release(&buf);
 261         } else {
 262                 if (graph_show_remainder(revs->graph))
 263                         putchar('\n');
 264         }
 265         maybe_flush_or_die(stdout, "stdout");
 266         finish_commit(commit);
 267 }
 268
 269 static int finish_object(struct object *obj, const char *name UNUSED,
 270                          void *cb_data)
 271 {
 272         struct rev_list_info *info = cb_data;
 273         if (oid_object_info_extended(the_repository, &obj->oid, NULL, 0) < 0) {
 274                 finish_object__ma(obj);
 275                 return 1;
 276         }
 277         if (info->revs->verify_objects && !obj->parsed && obj->type != OBJ_COMMIT)
 278                 parse_object(the_repository, &obj->oid);
 279         return 0;
 280 }
 281
 282 static void show_object(struct object *obj, const char *name, void *cb_data)
 283 {
 284         struct rev_list_info *info = cb_data;
 285         struct rev_info *revs = info->revs;
 286
 287         if (finish_object(obj, name, cb_data))
 288                 return;
 289         display_progress(progress, ++progress_counter);
 290         if (show_disk_usage)
 291                 total_disk_usage += get_object_disk_usage(obj);
 292         if (info->flags & REV_LIST_QUIET)
 293                 return;
 294
 295         if (revs->count) {
 296                 /*
 297                  * The object count is always accumulated in the .count_right
 298                  * field for traversal that is not a left-right traversal,
 299                  * and cmd_rev_list() made sure that a .count request that
 300                  * wants to count non-commit objects, which is handled by
 301                  * the show_object() callback, does not ask for .left_right.
 302                  */
 303                 revs->count_right++;
 304                 return;
 305         }
 306
 307         if (arg_show_object_names)
 308                 show_object_with_name(stdout, obj, name);
 309         else
 310                 printf("%s\n", oid_to_hex(&obj->oid));
 311 }
 312
 313 static void show_edge(struct commit *commit)
 314 {
 315         printf("-%s\n", oid_to_hex(&commit->object.oid));
 316 }
 317
 318 static void print_var_str(const char *var, const char *val)
 319 {
 320         printf("%s='%s'\n", var, val);
 321 }
 322
 323 static void print_var_int(const char *var, int val)
 324 {
 325         printf("%s=%d\n", var, val);
 326 }
 327
 328 static int show_bisect_vars(struct rev_list_info *info, int reaches, int all)
 329 {
 330         int cnt, flags = info->flags;
 331         char hex[GIT_MAX_HEXSZ + 1] = "";
 332         struct commit_list *tried;
 333         struct rev_info *revs = info->revs;
 334
 335         if (!revs->commits)
 336                 return 1;
 337
 338         revs->commits = filter_skipped(revs->commits, &tried,
 339                                        flags & BISECT_SHOW_ALL,
 340                                        NULL, NULL);
 341
 342         /*
 343          * revs->commits can reach "reaches" commits among
 344          * "all" commits.  If it is good, then there are
 345          * (all-reaches) commits left to be bisected.
 346          * On the other hand, if it is bad, then the set
 347          * to bisect is "reaches".
 348          * A bisect set of size N has (N-1) commits further
 349          * to test, as we already know one bad one.
 350          */
 351         cnt = all - reaches;
 352         if (cnt < reaches)
 353                 cnt = reaches;
 354
 355         if (revs->commits)
 356                 oid_to_hex_r(hex, &revs->commits->item->object.oid);
 357
 358         if (flags & BISECT_SHOW_ALL) {
 359                 traverse_commit_list(revs, show_commit, show_object, info);
 360                 printf("------\n");
 361         }
 362
 363         print_var_str("bisect_rev", hex);
 364         print_var_int("bisect_nr", cnt - 1);
 365         print_var_int("bisect_good", all - reaches - 1);
 366         print_var_int("bisect_bad", reaches - 1);
 367         print_var_int("bisect_all", all);
 368         print_var_int("bisect_steps", estimate_bisect_steps(all));
 369
 370         return 0;
 371 }
 372
 373 static int show_object_fast(
 374         const struct object_id *oid,
 375         enum object_type type UNUSED,
 376         int exclude UNUSED,
 377         uint32_t name_hash UNUSED,
 378         struct packed_git *found_pack UNUSED,
 379         off_t found_offset UNUSED)
 380 {
 381         fprintf(stdout, "%s\n", oid_to_hex(oid));
 382         return 1;
 383 }
 384
 385 static void print_disk_usage(off_t size)
 386 {
 387         struct strbuf sb = STRBUF_INIT;
 388         if (human_readable)
 389                 strbuf_humanise_bytes(&sb, size);
 390         else
 391                 strbuf_addf(&sb, "%"PRIuMAX, (uintmax_t)size);
 392         puts(sb.buf);
 393         strbuf_release(&sb);
 394 }
 395
 396 static inline int parse_missing_action_value(const char *value)
 397 {
 398         if (!strcmp(value, "error")) {
 399                 arg_missing_action = MA_ERROR;
 400                 return 1;
 401         }
 402
 403         if (!strcmp(value, "allow-any")) {
 404                 arg_missing_action = MA_ALLOW_ANY;
 405                 fetch_if_missing = 0;
 406                 return 1;
 407         }
 408
 409         if (!strcmp(value, "print")) {
 410                 arg_missing_action = MA_PRINT;
 411                 fetch_if_missing = 0;
 412                 return 1;
 413         }
 414
 415         if (!strcmp(value, "allow-promisor")) {
 416                 arg_missing_action = MA_ALLOW_PROMISOR;
 417                 fetch_if_missing = 0;
 418                 return 1;
 419         }
 420
 421         return 0;
 422 }
 423
 424 static int try_bitmap_count(struct rev_info *revs,
 425                             int filter_provided_objects)
 426 {
 427         uint32_t commit_count = 0,
 428                  tag_count = 0,
 429                  tree_count = 0,
 430                  blob_count = 0;
 431         int max_count;
 432         struct bitmap_index *bitmap_git;
 433
 434         /* This function only handles counting, not general traversal. */
 435         if (!revs->count)
 436                 return -1;
 437
 438         /*
 439          * A bitmap result can't know left/right, etc, because we don't
 440          * actually traverse.
 441          */
 442         if (revs->left_right || revs->cherry_mark)
 443                 return -1;
 444
 445         /*
 446          * If we're counting reachable objects, we can't handle a max count of
 447          * commits to traverse, since we don't know which objects go with which
 448          * commit.
 449          */
 450         if (revs->max_count >= 0 &&
 451             (revs->tag_objects || revs->tree_objects || revs->blob_objects))
 452                 return -1;
 453
 454         /*
 455          * This must be saved before doing any walking, since the revision
 456          * machinery will count it down to zero while traversing.
 457          */
 458         max_count = revs->max_count;
 459
 460         bitmap_git = prepare_bitmap_walk(revs, filter_provided_objects);
 461         if (!bitmap_git)
 462                 return -1;
 463
 464         count_bitmap_commit_list(bitmap_git, &commit_count,
 465                                  revs->tree_objects ? &tree_count : NULL,
 466                                  revs->blob_objects ? &blob_count : NULL,
 467                                  revs->tag_objects ? &tag_count : NULL);
 468         if (max_count >= 0 && max_count < commit_count)
 469                 commit_count = max_count;
 470
 471         printf("%d\n", commit_count + tree_count + blob_count + tag_count);
 472         free_bitmap_index(bitmap_git);
 473         return 0;
 474 }
 475
 476 static int try_bitmap_traversal(struct rev_info *revs,
 477                                 int filter_provided_objects)
 478 {
 479         struct bitmap_index *bitmap_git;
 480
 481         /*
 482          * We can't use a bitmap result with a traversal limit, since the set
 483          * of commits we'd get would be essentially random.
 484          */
 485         if (revs->max_count >= 0)
 486                 return -1;
 487
 488         bitmap_git = prepare_bitmap_walk(revs, filter_provided_objects);
 489         if (!bitmap_git)
 490                 return -1;
 491
 492         traverse_bitmap_commit_list(bitmap_git, revs, &show_object_fast);
 493         free_bitmap_index(bitmap_git);
 494         return 0;
 495 }
 496
 497 static int try_bitmap_disk_usage(struct rev_info *revs,
 498                                  int filter_provided_objects)
 499 {
 500         struct bitmap_index *bitmap_git;
 501         off_t size_from_bitmap;
 502
 503         if (!show_disk_usage)
 504                 return -1;
 505
 506         bitmap_git = prepare_bitmap_walk(revs, filter_provided_objects);
 507         if (!bitmap_git)
 508                 return -1;
 509
 510         size_from_bitmap = get_disk_usage_from_bitmap(bitmap_git, revs);
 511         print_disk_usage(size_from_bitmap);
 512
 513         free_bitmap_index(bitmap_git);
 514         return 0;
 515 }
 516
 517 int cmd_rev_list(int argc,
 518                  const char **argv,
 519                  const char *prefix,
 520                  struct repository *repo UNUSED)
 521 {
 522         struct rev_info revs;
 523         struct rev_list_info info;
 524         struct setup_revision_opt s_r_opt = {
 525                 .allow_exclude_promisor_objects = 1,
 526         };
 527         int i;
 528         int bisect_list = 0;
 529         int bisect_show_vars = 0;
 530         int bisect_find_all = 0;
 531         int use_bitmap_index = 0;
 532         int filter_provided_objects = 0;
 533         const char *show_progress = NULL;
 534         int ret = 0;
 535
 536         if (argc == 2 && !strcmp(argv[1], "-h"))
 537                 usage(rev_list_usage);
 538
 539         git_config(git_default_config, NULL);
 540         repo_init_revisions(the_repository, &revs, prefix);
 541         revs.abbrev = DEFAULT_ABBREV;
 542         revs.commit_format = CMIT_FMT_UNSPECIFIED;
 543         revs.include_header = 1;
 544
 545         /*
 546          * Scan the argument list before invoking setup_revisions(), so that we
 547          * know if fetch_if_missing needs to be set to 0.
 548          *
 549          * "--exclude-promisor-objects" acts as a pre-filter on missing objects
 550          * by not crossing the boundary from realized objects to promisor
 551          * objects.
 552          *
 553          * Let "--missing" to conditionally set fetch_if_missing.
 554          */
 555         /*
 556          * NEEDSWORK: These loops that attempt to find presence of
 557          * options without understanding that the options they are
 558          * skipping are broken (e.g., it would not know "--grep
 559          * --exclude-promisor-objects" is not triggering
 560          * "--exclude-promisor-objects" option).  We really need
 561          * setup_revisions() to have a mechanism to allow and disallow
 562          * some sets of options for different commands (like rev-list,
 563          * replay, etc). Such a mechanism should do an early parsing
 564          * of options and be able to manage the `--missing=...` and
 565          * `--exclude-promisor-objects` options below.
 566          */
 567         for (i = 1; i < argc; i++) {
 568                 const char *arg = argv[i];
 569                 if (!strcmp(arg, "--exclude-promisor-objects")) {
 570                         fetch_if_missing = 0;
 571                         revs.exclude_promisor_objects = 1;
 572                         break;
 573                 }
 574         }
 575         for (i = 1; i < argc; i++) {
 576                 const char *arg = argv[i];
 577                 if (skip_prefix(arg, "--missing=", &arg)) {
 578                         if (revs.exclude_promisor_objects)
 579                                 die(_("options '%s' and '%s' cannot be used together"), "--exclude-promisor-objects", "--missing");
 580                         if (parse_missing_action_value(arg))
 581                                 break;
 582                 }
 583         }
 584
 585         if (arg_missing_action)
 586                 revs.do_not_die_on_missing_objects = 1;
 587
 588         argc = setup_revisions(argc, argv, &revs, &s_r_opt);
 589
 590         memset(&info, 0, sizeof(info));
 591         info.revs = &revs;
 592         if (revs.bisect)
 593                 bisect_list = 1;
 594
 595         if (revs.diffopt.flags.quick)
 596                 info.flags |= REV_LIST_QUIET;
 597         for (i = 1 ; i < argc; i++) {
 598                 const char *arg = argv[i];
 599
 600                 if (!strcmp(arg, "--header")) {
 601                         revs.verbose_header = 1;
 602                         continue;
 603                 }
 604                 if (!strcmp(arg, "--timestamp")) {
 605                         info.show_timestamp = 1;
 606                         continue;
 607                 }
 608                 if (!strcmp(arg, "--bisect")) {
 609                         bisect_list = 1;
 610                         continue;
 611                 }
 612                 if (!strcmp(arg, "--bisect-all")) {
 613                         bisect_list = 1;
 614                         bisect_find_all = 1;
 615                         info.flags |= BISECT_SHOW_ALL;
 616                         revs.show_decorations = 1;
 617                         continue;
 618                 }
 619                 if (!strcmp(arg, "--bisect-vars")) {
 620                         bisect_list = 1;
 621                         bisect_show_vars = 1;
 622                         continue;
 623                 }
 624                 if (!strcmp(arg, "--use-bitmap-index")) {
 625                         use_bitmap_index = 1;
 626                         continue;
 627                 }
 628                 if (!strcmp(arg, "--test-bitmap")) {
 629                         test_bitmap_walk(&revs);
 630                         goto cleanup;
 631                 }
 632                 if (skip_prefix(arg, "--progress=", &arg)) {
 633                         show_progress = arg;
 634                         continue;
 635                 }
 636                 if (!strcmp(arg, "--filter-provided-objects")) {
 637                         filter_provided_objects = 1;
 638                         continue;
 639                 }
 640                 if (!strcmp(arg, "--filter-print-omitted")) {
 641                         arg_print_omitted = 1;
 642                         continue;
 643                 }
 644
 645                 if (!strcmp(arg, "--exclude-promisor-objects"))
 646                         continue; /* already handled above */
 647                 if (skip_prefix(arg, "--missing=", &arg))
 648                         continue; /* already handled above */
 649
 650                 if (!strcmp(arg, ("--no-object-names"))) {
 651                         arg_show_object_names = 0;
 652                         continue;
 653                 }
 654
 655                 if (!strcmp(arg, ("--object-names"))) {
 656                         arg_show_object_names = 1;
 657                         continue;
 658                 }
 659
 660                 if (!strcmp(arg, ("--commit-header"))) {
 661                         revs.include_header = 1;
 662                         continue;
 663                 }
 664
 665                 if (!strcmp(arg, ("--no-commit-header"))) {
 666                         revs.include_header = 0;
 667                         continue;
 668                 }
 669
 670                 if (skip_prefix(arg, "--disk-usage", &arg)) {
 671                         if (*arg == '=') {
 672                                 if (!strcmp(++arg, "human")) {
 673                                         human_readable = 1;
 674                                 } else
 675                                         die(_("invalid value for '%s': '%s', the only allowed format is '%s'"),
 676                                             "--disk-usage=<format>", arg, "human");
 677                         } else if (*arg) {
 678                                 /*
 679                                  * Arguably should goto a label to continue chain of ifs?
 680                                  * Doesn't matter unless we try to add --disk-usage-foo
 681                                  * afterwards.
 682                                  */
 683                                 usage(rev_list_usage);
 684                         }
 685                         show_disk_usage = 1;
 686                         info.flags |= REV_LIST_QUIET;
 687                         continue;
 688                 }
 689
 690                 usage(rev_list_usage);
 691
 692         }
 693         if (revs.commit_format != CMIT_FMT_USERFORMAT)
 694                 revs.include_header = 1;
 695         if (revs.commit_format != CMIT_FMT_UNSPECIFIED) {
 696                 /* The command line has a --pretty  */
 697                 info.hdr_termination = '\n';
 698                 if (revs.commit_format == CMIT_FMT_ONELINE || !revs.include_header)
 699                         info.header_prefix = "";
 700                 else
 701                         info.header_prefix = "commit ";
 702         }
 703         else if (revs.verbose_header)
 704                 /* Only --header was specified */
 705                 revs.commit_format = CMIT_FMT_RAW;
 706
 707         if ((!revs.commits && reflog_walk_empty(revs.reflog_info) &&
 708              (!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
 709               !revs.pending.nr) &&
 710              !revs.rev_input_given && !revs.read_from_stdin) ||
 711             revs.diff)
 712                 usage(rev_list_usage);
 713
 714         if (revs.show_notes)
 715                 die(_("rev-list does not support display of notes"));
 716
 717         if (revs.count &&
 718             (revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
 719             (revs.left_right || revs.cherry_mark))
 720                 die(_("marked counting and '%s' cannot be used together"), "--objects");
 721
 722         save_commit_buffer = (revs.verbose_header ||
 723                               revs.grep_filter.pattern_list ||
 724                               revs.grep_filter.header_list);
 725         if (bisect_list)
 726                 revs.limited = 1;
 727
 728         if (show_progress)
 729                 progress = start_delayed_progress(show_progress, 0);
 730
 731         if (use_bitmap_index) {
 732                 if (!try_bitmap_count(&revs, filter_provided_objects))
 733                         goto cleanup;
 734                 if (!try_bitmap_disk_usage(&revs, filter_provided_objects))
 735                         goto cleanup;
 736                 if (!try_bitmap_traversal(&revs, filter_provided_objects))
 737                         goto cleanup;
 738         }
 739
 740         if (prepare_revision_walk(&revs))
 741                 die("revision walk setup failed");
 742         if (revs.tree_objects)
 743                 mark_edges_uninteresting(&revs, show_edge, 0);
 744
 745         if (bisect_list) {
 746                 int reaches, all;
 747                 unsigned bisect_flags = 0;
 748
 749                 if (bisect_find_all)
 750                         bisect_flags |= FIND_BISECTION_ALL;
 751
 752                 if (revs.first_parent_only)
 753                         bisect_flags |= FIND_BISECTION_FIRST_PARENT_ONLY;
 754
 755                 find_bisection(&revs.commits, &reaches, &all, bisect_flags);
 756
 757                 if (bisect_show_vars) {
 758                         ret = show_bisect_vars(&info, reaches, all);
 759                         goto cleanup;
 760                 }
 761         }
 762
 763         if (filter_provided_objects) {
 764                 struct commit_list *c;
 765                 for (i = 0; i < revs.pending.nr; i++) {
 766                         struct object_array_entry *pending = revs.pending.objects + i;
 767                         pending->item->flags |= NOT_USER_GIVEN;
 768                 }
 769                 for (c = revs.commits; c; c = c->next)
 770                         c->item->object.flags |= NOT_USER_GIVEN;
 771         }
 772
 773         if (arg_print_omitted)
 774                 oidset_init(&omitted_objects, DEFAULT_OIDSET_SIZE);
 775         if (arg_missing_action == MA_PRINT) {
 776                 oidset_init(&missing_objects, DEFAULT_OIDSET_SIZE);
 777                 /* Add missing tips */
 778                 oidset_insert_from_set(&missing_objects, &revs.missing_commits);
 779                 oidset_clear(&revs.missing_commits);
 780         }
 781
 782         traverse_commit_list_filtered(
 783                 &revs, show_commit, show_object, &info,
 784                 (arg_print_omitted ? &omitted_objects : NULL));
 785
 786         if (arg_print_omitted) {
 787                 struct oidset_iter iter;
 788                 struct object_id *oid;
 789                 oidset_iter_init(&omitted_objects, &iter);
 790                 while ((oid = oidset_iter_next(&iter)))
 791                         printf("~%s\n", oid_to_hex(oid));
 792                 oidset_clear(&omitted_objects);
 793         }
 794         if (arg_missing_action == MA_PRINT) {
 795                 struct oidset_iter iter;
 796                 struct object_id *oid;
 797                 oidset_iter_init(&missing_objects, &iter);
 798                 while ((oid = oidset_iter_next(&iter)))
 799                         printf("?%s\n", oid_to_hex(oid));
 800                 oidset_clear(&missing_objects);
 801         }
 802
 803         stop_progress(&progress);
 804
 805         if (revs.count) {
 806                 if (revs.left_right && revs.cherry_mark)
 807                         printf("%d\t%d\t%d\n", revs.count_left, revs.count_right, revs.count_same);
 808                 else if (revs.left_right)
 809                         printf("%d\t%d\n", revs.count_left, revs.count_right);
 810                 else if (revs.cherry_mark)
 811                         printf("%d\t%d\n", revs.count_left + revs.count_right, revs.count_same);
 812                 else
 813                         printf("%d\n", revs.count_left + revs.count_right);
 814         }
 815
 816         if (show_disk_usage)
 817                 print_disk_usage(total_disk_usage);
 818
 819 cleanup:
 820         release_revisions(&revs);
 821         return ret;
 822 }