builtin/rev-list.c

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