builtin / rev-list.con commit Merge branch 'jk/reflog-date' (0d32799)
   1#include "cache.h"
   2#include "commit.h"
   3#include "diff.h"
   4#include "revision.h"
   5#include "list-objects.h"
   6#include "pack.h"
   7#include "pack-bitmap.h"
   8#include "builtin.h"
   9#include "log-tree.h"
  10#include "graph.h"
  11#include "bisect.h"
  12#include "progress.h"
  13
  14static const char rev_list_usage[] =
  15"git rev-list [OPTION] <commit-id>... [ -- paths... ]\n"
  16"  limiting output:\n"
  17"    --max-count=<n>\n"
  18"    --max-age=<epoch>\n"
  19"    --min-age=<epoch>\n"
  20"    --sparse\n"
  21"    --no-merges\n"
  22"    --min-parents=<n>\n"
  23"    --no-min-parents\n"
  24"    --max-parents=<n>\n"
  25"    --no-max-parents\n"
  26"    --remove-empty\n"
  27"    --all\n"
  28"    --branches\n"
  29"    --tags\n"
  30"    --remotes\n"
  31"    --stdin\n"
  32"    --quiet\n"
  33"  ordering output:\n"
  34"    --topo-order\n"
  35"    --date-order\n"
  36"    --reverse\n"
  37"  formatting output:\n"
  38"    --parents\n"
  39"    --children\n"
  40"    --objects | --objects-edge\n"
  41"    --unpacked\n"
  42"    --header | --pretty\n"
  43"    --abbrev=<n> | --no-abbrev\n"
  44"    --abbrev-commit\n"
  45"    --left-right\n"
  46"    --count\n"
  47"  special purpose:\n"
  48"    --bisect\n"
  49"    --bisect-vars\n"
  50"    --bisect-all"
  51;
  52
  53static struct progress *progress;
  54static unsigned progress_counter;
  55
  56static void finish_commit(struct commit *commit, void *data);
  57static void show_commit(struct commit *commit, void *data)
  58{
  59        struct rev_list_info *info = data;
  60        struct rev_info *revs = info->revs;
  61
  62        display_progress(progress, ++progress_counter);
  63
  64        if (info->flags & REV_LIST_QUIET) {
  65                finish_commit(commit, data);
  66                return;
  67        }
  68
  69        graph_show_commit(revs->graph);
  70
  71        if (revs->count) {
  72                if (commit->object.flags & PATCHSAME)
  73                        revs->count_same++;
  74                else if (commit->object.flags & SYMMETRIC_LEFT)
  75                        revs->count_left++;
  76                else
  77                        revs->count_right++;
  78                finish_commit(commit, data);
  79                return;
  80        }
  81
  82        if (info->show_timestamp)
  83                printf("%lu ", commit->date);
  84        if (info->header_prefix)
  85                fputs(info->header_prefix, stdout);
  86
  87        if (!revs->graph)
  88                fputs(get_revision_mark(revs, commit), stdout);
  89        if (revs->abbrev_commit && revs->abbrev)
  90                fputs(find_unique_abbrev(commit->object.oid.hash, revs->abbrev),
  91                      stdout);
  92        else
  93                fputs(oid_to_hex(&commit->object.oid), stdout);
  94        if (revs->print_parents) {
  95                struct commit_list *parents = commit->parents;
  96                while (parents) {
  97                        printf(" %s", oid_to_hex(&parents->item->object.oid));
  98                        parents = parents->next;
  99                }
 100        }
 101        if (revs->children.name) {
 102                struct commit_list *children;
 103
 104                children = lookup_decoration(&revs->children, &commit->object);
 105                while (children) {
 106                        printf(" %s", oid_to_hex(&children->item->object.oid));
 107                        children = children->next;
 108                }
 109        }
 110        show_decorations(revs, commit);
 111        if (revs->commit_format == CMIT_FMT_ONELINE)
 112                putchar(' ');
 113        else
 114                putchar('\n');
 115
 116        if (revs->verbose_header && get_cached_commit_buffer(commit, NULL)) {
 117                struct strbuf buf = STRBUF_INIT;
 118                struct pretty_print_context ctx = {0};
 119                ctx.abbrev = revs->abbrev;
 120                ctx.date_mode = revs->date_mode;
 121                ctx.date_mode_explicit = revs->date_mode_explicit;
 122                ctx.fmt = revs->commit_format;
 123                ctx.output_encoding = get_log_output_encoding();
 124                pretty_print_commit(&ctx, commit, &buf);
 125                if (revs->graph) {
 126                        if (buf.len) {
 127                                if (revs->commit_format != CMIT_FMT_ONELINE)
 128                                        graph_show_oneline(revs->graph);
 129
 130                                graph_show_commit_msg(revs->graph, &buf);
 131
 132                                /*
 133                                 * Add a newline after the commit message.
 134                                 *
 135                                 * Usually, this newline produces a blank
 136                                 * padding line between entries, in which case
 137                                 * we need to add graph padding on this line.
 138                                 *
 139                                 * However, the commit message may not end in a
 140                                 * newline.  In this case the newline simply
 141                                 * ends the last line of the commit message,
 142                                 * and we don't need any graph output.  (This
 143                                 * always happens with CMIT_FMT_ONELINE, and it
 144                                 * happens with CMIT_FMT_USERFORMAT when the
 145                                 * format doesn't explicitly end in a newline.)
 146                                 */
 147                                if (buf.len && buf.buf[buf.len - 1] == '\n')
 148                                        graph_show_padding(revs->graph);
 149                                putchar('\n');
 150                        } else {
 151                                /*
 152                                 * If the message buffer is empty, just show
 153                                 * the rest of the graph output for this
 154                                 * commit.
 155                                 */
 156                                if (graph_show_remainder(revs->graph))
 157                                        putchar('\n');
 158                                if (revs->commit_format == CMIT_FMT_ONELINE)
 159                                        putchar('\n');
 160                        }
 161                } else {
 162                        if (revs->commit_format != CMIT_FMT_USERFORMAT ||
 163                            buf.len) {
 164                                fwrite(buf.buf, 1, buf.len, stdout);
 165                                putchar(info->hdr_termination);
 166                        }
 167                }
 168                strbuf_release(&buf);
 169        } else {
 170                if (graph_show_remainder(revs->graph))
 171                        putchar('\n');
 172        }
 173        maybe_flush_or_die(stdout, "stdout");
 174        finish_commit(commit, data);
 175}
 176
 177static void finish_commit(struct commit *commit, void *data)
 178{
 179        if (commit->parents) {
 180                free_commit_list(commit->parents);
 181                commit->parents = NULL;
 182        }
 183        free_commit_buffer(commit);
 184}
 185
 186static void finish_object(struct object *obj, const char *name, void *cb_data)
 187{
 188        struct rev_list_info *info = cb_data;
 189        if (obj->type == OBJ_BLOB && !has_object_file(&obj->oid))
 190                die("missing blob object '%s'", oid_to_hex(&obj->oid));
 191        if (info->revs->verify_objects && !obj->parsed && obj->type != OBJ_COMMIT)
 192                parse_object(obj->oid.hash);
 193}
 194
 195static void show_object(struct object *obj, const char *name, void *cb_data)
 196{
 197        struct rev_list_info *info = cb_data;
 198        finish_object(obj, name, cb_data);
 199        display_progress(progress, ++progress_counter);
 200        if (info->flags & REV_LIST_QUIET)
 201                return;
 202        show_object_with_name(stdout, obj, name);
 203}
 204
 205static void show_edge(struct commit *commit)
 206{
 207        printf("-%s\n", oid_to_hex(&commit->object.oid));
 208}
 209
 210static void print_var_str(const char *var, const char *val)
 211{
 212        printf("%s='%s'\n", var, val);
 213}
 214
 215static void print_var_int(const char *var, int val)
 216{
 217        printf("%s=%d\n", var, val);
 218}
 219
 220static int show_bisect_vars(struct rev_list_info *info, int reaches, int all)
 221{
 222        int cnt, flags = info->flags;
 223        char hex[GIT_SHA1_HEXSZ + 1] = "";
 224        struct commit_list *tried;
 225        struct rev_info *revs = info->revs;
 226
 227        if (!revs->commits)
 228                return 1;
 229
 230        revs->commits = filter_skipped(revs->commits, &tried,
 231                                       flags & BISECT_SHOW_ALL,
 232                                       NULL, NULL);
 233
 234        /*
 235         * revs->commits can reach "reaches" commits among
 236         * "all" commits.  If it is good, then there are
 237         * (all-reaches) commits left to be bisected.
 238         * On the other hand, if it is bad, then the set
 239         * to bisect is "reaches".
 240         * A bisect set of size N has (N-1) commits further
 241         * to test, as we already know one bad one.
 242         */
 243        cnt = all - reaches;
 244        if (cnt < reaches)
 245                cnt = reaches;
 246
 247        if (revs->commits)
 248                sha1_to_hex_r(hex, revs->commits->item->object.oid.hash);
 249
 250        if (flags & BISECT_SHOW_ALL) {
 251                traverse_commit_list(revs, show_commit, show_object, info);
 252                printf("------\n");
 253        }
 254
 255        print_var_str("bisect_rev", hex);
 256        print_var_int("bisect_nr", cnt - 1);
 257        print_var_int("bisect_good", all - reaches - 1);
 258        print_var_int("bisect_bad", reaches - 1);
 259        print_var_int("bisect_all", all);
 260        print_var_int("bisect_steps", estimate_bisect_steps(all));
 261
 262        return 0;
 263}
 264
 265static int show_object_fast(
 266        const unsigned char *sha1,
 267        enum object_type type,
 268        int exclude,
 269        uint32_t name_hash,
 270        struct packed_git *found_pack,
 271        off_t found_offset)
 272{
 273        fprintf(stdout, "%s\n", sha1_to_hex(sha1));
 274        return 1;
 275}
 276
 277int cmd_rev_list(int argc, const char **argv, const char *prefix)
 278{
 279        struct rev_info revs;
 280        struct rev_list_info info;
 281        int i;
 282        int bisect_list = 0;
 283        int bisect_show_vars = 0;
 284        int bisect_find_all = 0;
 285        int use_bitmap_index = 0;
 286        const char *show_progress = NULL;
 287
 288        git_config(git_default_config, NULL);
 289        init_revisions(&revs, prefix);
 290        revs.abbrev = DEFAULT_ABBREV;
 291        revs.commit_format = CMIT_FMT_UNSPECIFIED;
 292        argc = setup_revisions(argc, argv, &revs, NULL);
 293
 294        memset(&info, 0, sizeof(info));
 295        info.revs = &revs;
 296        if (revs.bisect)
 297                bisect_list = 1;
 298
 299        if (DIFF_OPT_TST(&revs.diffopt, QUICK))
 300                info.flags |= REV_LIST_QUIET;
 301        for (i = 1 ; i < argc; i++) {
 302                const char *arg = argv[i];
 303
 304                if (!strcmp(arg, "--header")) {
 305                        revs.verbose_header = 1;
 306                        continue;
 307                }
 308                if (!strcmp(arg, "--timestamp")) {
 309                        info.show_timestamp = 1;
 310                        continue;
 311                }
 312                if (!strcmp(arg, "--bisect")) {
 313                        bisect_list = 1;
 314                        continue;
 315                }
 316                if (!strcmp(arg, "--bisect-all")) {
 317                        bisect_list = 1;
 318                        bisect_find_all = 1;
 319                        info.flags |= BISECT_SHOW_ALL;
 320                        revs.show_decorations = 1;
 321                        continue;
 322                }
 323                if (!strcmp(arg, "--bisect-vars")) {
 324                        bisect_list = 1;
 325                        bisect_show_vars = 1;
 326                        continue;
 327                }
 328                if (!strcmp(arg, "--use-bitmap-index")) {
 329                        use_bitmap_index = 1;
 330                        continue;
 331                }
 332                if (!strcmp(arg, "--test-bitmap")) {
 333                        test_bitmap_walk(&revs);
 334                        return 0;
 335                }
 336                if (skip_prefix(arg, "--progress=", &arg)) {
 337                        show_progress = arg;
 338                        continue;
 339                }
 340                usage(rev_list_usage);
 341
 342        }
 343        if (revs.commit_format != CMIT_FMT_UNSPECIFIED) {
 344                /* The command line has a --pretty  */
 345                info.hdr_termination = '\n';
 346                if (revs.commit_format == CMIT_FMT_ONELINE)
 347                        info.header_prefix = "";
 348                else
 349                        info.header_prefix = "commit ";
 350        }
 351        else if (revs.verbose_header)
 352                /* Only --header was specified */
 353                revs.commit_format = CMIT_FMT_RAW;
 354
 355        if ((!revs.commits &&
 356             (!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
 357              !revs.pending.nr)) ||
 358            revs.diff)
 359                usage(rev_list_usage);
 360
 361        if (revs.show_notes)
 362                die(_("rev-list does not support display of notes"));
 363
 364        save_commit_buffer = (revs.verbose_header ||
 365                              revs.grep_filter.pattern_list ||
 366                              revs.grep_filter.header_list);
 367        if (bisect_list)
 368                revs.limited = 1;
 369
 370        if (show_progress)
 371                progress = start_progress_delay(show_progress, 0, 0, 2);
 372
 373        if (use_bitmap_index && !revs.prune) {
 374                if (revs.count && !revs.left_right && !revs.cherry_mark) {
 375                        uint32_t commit_count;
 376                        int max_count = revs.max_count;
 377                        if (!prepare_bitmap_walk(&revs)) {
 378                                count_bitmap_commit_list(&commit_count, NULL, NULL, NULL);
 379                                if (max_count >= 0 && max_count < commit_count)
 380                                        commit_count = max_count;
 381                                printf("%d\n", commit_count);
 382                                return 0;
 383                        }
 384                } else if (revs.max_count < 0 &&
 385                           revs.tag_objects && revs.tree_objects && revs.blob_objects) {
 386                        if (!prepare_bitmap_walk(&revs)) {
 387                                traverse_bitmap_commit_list(&show_object_fast);
 388                                return 0;
 389                        }
 390                }
 391        }
 392
 393        if (prepare_revision_walk(&revs))
 394                die("revision walk setup failed");
 395        if (revs.tree_objects)
 396                mark_edges_uninteresting(&revs, show_edge);
 397
 398        if (bisect_list) {
 399                int reaches = reaches, all = all;
 400
 401                revs.commits = find_bisection(revs.commits, &reaches, &all,
 402                                              bisect_find_all);
 403
 404                if (bisect_show_vars)
 405                        return show_bisect_vars(&info, reaches, all);
 406        }
 407
 408        traverse_commit_list(&revs, show_commit, show_object, &info);
 409
 410        stop_progress(&progress);
 411
 412        if (revs.count) {
 413                if (revs.left_right && revs.cherry_mark)
 414                        printf("%d\t%d\t%d\n", revs.count_left, revs.count_right, revs.count_same);
 415                else if (revs.left_right)
 416                        printf("%d\t%d\n", revs.count_left, revs.count_right);
 417                else if (revs.cherry_mark)
 418                        printf("%d\t%d\n", revs.count_left + revs.count_right, revs.count_same);
 419                else
 420                        printf("%d\n", revs.count_left + revs.count_right);
 421        }
 422
 423        return 0;
 424}