1#include "cache.h"
2#include "config.h"
3#include "commit.h"
4#include "diff.h"
5#include "revision.h"
6#include "list-objects.h"
7#include "list-objects-filter.h"
8#include "list-objects-filter-options.h"
9#include "object-store.h"
10#include "pack.h"
11#include "pack-bitmap.h"
12#include "builtin.h"
13#include "log-tree.h"
14#include "graph.h"
15#include "bisect.h"
16#include "progress.h"
17#include "reflog-walk.h"
18#include "oidset.h"
19#include "packfile.h"
20static const char rev_list_usage[] =
22"git rev-list [OPTION] <commit-id>... [ -- paths... ]\n"
23" limiting output:\n"
24" --max-count=<n>\n"
25" --max-age=<epoch>\n"
26" --min-age=<epoch>\n"
27" --sparse\n"
28" --no-merges\n"
29" --min-parents=<n>\n"
30" --no-min-parents\n"
31" --max-parents=<n>\n"
32" --no-max-parents\n"
33" --remove-empty\n"
34" --all\n"
35" --branches\n"
36" --tags\n"
37" --remotes\n"
38" --stdin\n"
39" --quiet\n"
40" ordering output:\n"
41" --topo-order\n"
42" --date-order\n"
43" --reverse\n"
44" formatting output:\n"
45" --parents\n"
46" --children\n"
47" --objects | --objects-edge\n"
48" --unpacked\n"
49" --header | --pretty\n"
50" --abbrev=<n> | --no-abbrev\n"
51" --abbrev-commit\n"
52" --left-right\n"
53" --count\n"
54" special purpose:\n"
55" --bisect\n"
56" --bisect-vars\n"
57" --bisect-all"
58;
59static struct progress *progress;
61static unsigned progress_counter;
62static struct list_objects_filter_options filter_options;
64static struct oidset omitted_objects;
65static int arg_print_omitted; /* print objects omitted by filter */
66static struct oidset missing_objects;
68enum missing_action {
69 MA_ERROR = 0, /* fail if any missing objects are encountered */
70 MA_ALLOW_ANY, /* silently allow ALL missing objects */
71 MA_PRINT, /* print ALL missing objects in special section */
72 MA_ALLOW_PROMISOR, /* silently allow all missing PROMISOR objects */
73};
74static enum missing_action arg_missing_action;
75#define DEFAULT_OIDSET_SIZE (16*1024)
77static void finish_commit(struct commit *commit, void *data);
79static void show_commit(struct commit *commit, void *data)
80{
81 struct rev_list_info *info = data;
82 struct rev_info *revs = info->revs;
83 display_progress(progress, ++progress_counter);
85 if (info->flags & REV_LIST_QUIET) {
87 finish_commit(commit, data);
88 return;
89 }
90 graph_show_commit(revs->graph);
92 if (revs->count) {
94 if (commit->object.flags & PATCHSAME)
95 revs->count_same++;
96 else if (commit->object.flags & SYMMETRIC_LEFT)
97 revs->count_left++;
98 else
99 revs->count_right++;
100 finish_commit(commit, data);
101 return;
102 }
103 if (info->show_timestamp)
105 printf("%"PRItime" ", commit->date);
106 if (info->header_prefix)
107 fputs(info->header_prefix, stdout);
108 if (!revs->graph)
110 fputs(get_revision_mark(revs, commit), stdout);
111 if (revs->abbrev_commit && revs->abbrev)
112 fputs(find_unique_abbrev(&commit->object.oid, revs->abbrev),
113 stdout);
114 else
115 fputs(oid_to_hex(&commit->object.oid), stdout);
116 if (revs->print_parents) {
117 struct commit_list *parents = commit->parents;
118 while (parents) {
119 printf(" %s", oid_to_hex(&parents->item->object.oid));
120 parents = parents->next;
121 }
122 }
123 if (revs->children.name) {
124 struct commit_list *children;
125 children = lookup_decoration(&revs->children, &commit->object);
127 while (children) {
128 printf(" %s", oid_to_hex(&children->item->object.oid));
129 children = children->next;
130 }
131 }
132 show_decorations(revs, commit);
133 if (revs->commit_format == CMIT_FMT_ONELINE)
134 putchar(' ');
135 else
136 putchar('\n');
137 if (revs->verbose_header) {
139 struct strbuf buf = STRBUF_INIT;
140 struct pretty_print_context ctx = {0};
141 ctx.abbrev = revs->abbrev;
142 ctx.date_mode = revs->date_mode;
143 ctx.date_mode_explicit = revs->date_mode_explicit;
144 ctx.fmt = revs->commit_format;
145 ctx.output_encoding = get_log_output_encoding();
146 ctx.color = revs->diffopt.use_color;
147 pretty_print_commit(&ctx, commit, &buf);
148 if (buf.len) {
149 if (revs->commit_format != CMIT_FMT_ONELINE)
150 graph_show_oneline(revs->graph);
151 graph_show_commit_msg(revs->graph, stdout, &buf);
153 /*
155 * Add a newline after the commit message.
156 *
157 * Usually, this newline produces a blank
158 * padding line between entries, in which case
159 * we need to add graph padding on this line.
160 *
161 * However, the commit message may not end in a
162 * newline. In this case the newline simply
163 * ends the last line of the commit message,
164 * and we don't need any graph output. (This
165 * always happens with CMIT_FMT_ONELINE, and it
166 * happens with CMIT_FMT_USERFORMAT when the
167 * format doesn't explicitly end in a newline.)
168 */
169 if (buf.len && buf.buf[buf.len - 1] == '\n')
170 graph_show_padding(revs->graph);
171 putchar(info->hdr_termination);
172 } else {
173 /*
174 * If the message buffer is empty, just show
175 * the rest of the graph output for this
176 * commit.
177 */
178 if (graph_show_remainder(revs->graph))
179 putchar('\n');
180 if (revs->commit_format == CMIT_FMT_ONELINE)
181 putchar('\n');
182 }
183 strbuf_release(&buf);
184 } else {
185 if (graph_show_remainder(revs->graph))
186 putchar('\n');
187 }
188 maybe_flush_or_die(stdout, "stdout");
189 finish_commit(commit, data);
190}
191static void finish_commit(struct commit *commit, void *data)
193{
194 if (commit->parents) {
195 free_commit_list(commit->parents);
196 commit->parents = NULL;
197 }
198 free_commit_buffer(commit);
199}
200static inline void finish_object__ma(struct object *obj)
202{
203 /*
204 * Whether or not we try to dynamically fetch missing objects
205 * from the server, we currently DO NOT have the object. We
206 * can either print, allow (ignore), or conditionally allow
207 * (ignore) them.
208 */
209 switch (arg_missing_action) {
210 case MA_ERROR:
211 die("missing blob object '%s'", oid_to_hex(&obj->oid));
212 return;
213 case MA_ALLOW_ANY:
215 return;
216 case MA_PRINT:
218 oidset_insert(&missing_objects, &obj->oid);
219 return;
220 case MA_ALLOW_PROMISOR:
222 if (is_promisor_object(&obj->oid))
223 return;
224 die("unexpected missing blob object '%s'",
225 oid_to_hex(&obj->oid));
226 return;
227 default:
229 BUG("unhandled missing_action");
230 return;
231 }
232}
233static int finish_object(struct object *obj, const char *name, void *cb_data)
235{
236 struct rev_list_info *info = cb_data;
237 if (obj->type == OBJ_BLOB && !has_object_file(&obj->oid)) {
238 finish_object__ma(obj);
239 return 1;
240 }
241 if (info->revs->verify_objects && !obj->parsed && obj->type != OBJ_COMMIT)
242 parse_object(the_repository, &obj->oid);
243 return 0;
244}
245static void show_object(struct object *obj, const char *name, void *cb_data)
247{
248 struct rev_list_info *info = cb_data;
249 if (finish_object(obj, name, cb_data))
250 return;
251 display_progress(progress, ++progress_counter);
252 if (info->flags & REV_LIST_QUIET)
253 return;
254 show_object_with_name(stdout, obj, name);
255}
256static void show_edge(struct commit *commit)
258{
259 printf("-%s\n", oid_to_hex(&commit->object.oid));
260}
261static void print_var_str(const char *var, const char *val)
263{
264 printf("%s='%s'\n", var, val);
265}
266static void print_var_int(const char *var, int val)
268{
269 printf("%s=%d\n", var, val);
270}
271static int show_bisect_vars(struct rev_list_info *info, int reaches, int all)
273{
274 int cnt, flags = info->flags;
275 char hex[GIT_MAX_HEXSZ + 1] = "";
276 struct commit_list *tried;
277 struct rev_info *revs = info->revs;
278 if (!revs->commits)
280 return 1;
281 revs->commits = filter_skipped(revs->commits, &tried,
283 flags & BISECT_SHOW_ALL,
284 NULL, NULL);
285 /*
287 * revs->commits can reach "reaches" commits among
288 * "all" commits. If it is good, then there are
289 * (all-reaches) commits left to be bisected.
290 * On the other hand, if it is bad, then the set
291 * to bisect is "reaches".
292 * A bisect set of size N has (N-1) commits further
293 * to test, as we already know one bad one.
294 */
295 cnt = all - reaches;
296 if (cnt < reaches)
297 cnt = reaches;
298 if (revs->commits)
300 oid_to_hex_r(hex, &revs->commits->item->object.oid);
301 if (flags & BISECT_SHOW_ALL) {
303 traverse_commit_list(revs, show_commit, show_object, info);
304 printf("------\n");
305 }
306 print_var_str("bisect_rev", hex);
308 print_var_int("bisect_nr", cnt - 1);
309 print_var_int("bisect_good", all - reaches - 1);
310 print_var_int("bisect_bad", reaches - 1);
311 print_var_int("bisect_all", all);
312 print_var_int("bisect_steps", estimate_bisect_steps(all));
313 return 0;
315}
316static int show_object_fast(
318 const struct object_id *oid,
319 enum object_type type,
320 int exclude,
321 uint32_t name_hash,
322 struct packed_git *found_pack,
323 off_t found_offset)
324{
325 fprintf(stdout, "%s\n", oid_to_hex(oid));
326 return 1;
327}
328static inline int parse_missing_action_value(const char *value)
330{
331 if (!strcmp(value, "error")) {
332 arg_missing_action = MA_ERROR;
333 return 1;
334 }
335 if (!strcmp(value, "allow-any")) {
337 arg_missing_action = MA_ALLOW_ANY;
338 fetch_if_missing = 0;
339 return 1;
340 }
341 if (!strcmp(value, "print")) {
343 arg_missing_action = MA_PRINT;
344 fetch_if_missing = 0;
345 return 1;
346 }
347 if (!strcmp(value, "allow-promisor")) {
349 arg_missing_action = MA_ALLOW_PROMISOR;
350 fetch_if_missing = 0;
351 return 1;
352 }
353 return 0;
355}
356int cmd_rev_list(int argc, const char **argv, const char *prefix)
358{
359 struct rev_info revs;
360 struct rev_list_info info;
361 int i;
362 int bisect_list = 0;
363 int bisect_show_vars = 0;
364 int bisect_find_all = 0;
365 int use_bitmap_index = 0;
366 const char *show_progress = NULL;
367 if (argc == 2 && !strcmp(argv[1], "-h"))
369 usage(rev_list_usage);
370 git_config(git_default_config, NULL);
372 init_revisions(&revs, prefix);
373 revs.abbrev = DEFAULT_ABBREV;
374 revs.commit_format = CMIT_FMT_UNSPECIFIED;
375 /*
377 * Scan the argument list before invoking setup_revisions(), so that we
378 * know if fetch_if_missing needs to be set to 0.
379 *
380 * "--exclude-promisor-objects" acts as a pre-filter on missing objects
381 * by not crossing the boundary from realized objects to promisor
382 * objects.
383 *
384 * Let "--missing" to conditionally set fetch_if_missing.
385 */
386 for (i = 1; i < argc; i++) {
387 const char *arg = argv[i];
388 if (!strcmp(arg, "--exclude-promisor-objects")) {
389 fetch_if_missing = 0;
390 revs.exclude_promisor_objects = 1;
391 break;
392 }
393 }
394 for (i = 1; i < argc; i++) {
395 const char *arg = argv[i];
396 if (skip_prefix(arg, "--missing=", &arg)) {
397 if (revs.exclude_promisor_objects)
398 die(_("cannot combine --exclude-promisor-objects and --missing"));
399 if (parse_missing_action_value(arg))
400 break;
401 }
402 }
403 argc = setup_revisions(argc, argv, &revs, NULL);
405 memset(&info, 0, sizeof(info));
407 info.revs = &revs;
408 if (revs.bisect)
409 bisect_list = 1;
410 if (revs.diffopt.flags.quick)
412 info.flags |= REV_LIST_QUIET;
413 for (i = 1 ; i < argc; i++) {
414 const char *arg = argv[i];
415 if (!strcmp(arg, "--header")) {
417 revs.verbose_header = 1;
418 continue;
419 }
420 if (!strcmp(arg, "--timestamp")) {
421 info.show_timestamp = 1;
422 continue;
423 }
424 if (!strcmp(arg, "--bisect")) {
425 bisect_list = 1;
426 continue;
427 }
428 if (!strcmp(arg, "--bisect-all")) {
429 bisect_list = 1;
430 bisect_find_all = 1;
431 info.flags |= BISECT_SHOW_ALL;
432 revs.show_decorations = 1;
433 continue;
434 }
435 if (!strcmp(arg, "--bisect-vars")) {
436 bisect_list = 1;
437 bisect_show_vars = 1;
438 continue;
439 }
440 if (!strcmp(arg, "--use-bitmap-index")) {
441 use_bitmap_index = 1;
442 continue;
443 }
444 if (!strcmp(arg, "--test-bitmap")) {
445 test_bitmap_walk(&revs);
446 return 0;
447 }
448 if (skip_prefix(arg, "--progress=", &arg)) {
449 show_progress = arg;
450 continue;
451 }
452 if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
454 parse_list_objects_filter(&filter_options, arg);
455 if (filter_options.choice && !revs.blob_objects)
456 die(_("object filtering requires --objects"));
457 if (filter_options.choice == LOFC_SPARSE_OID &&
458 !filter_options.sparse_oid_value)
459 die(_("invalid sparse value '%s'"),
460 filter_options.filter_spec);
461 continue;
462 }
463 if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
464 list_objects_filter_set_no_filter(&filter_options);
465 continue;
466 }
467 if (!strcmp(arg, "--filter-print-omitted")) {
468 arg_print_omitted = 1;
469 continue;
470 }
471 if (!strcmp(arg, "--exclude-promisor-objects"))
473 continue; /* already handled above */
474 if (skip_prefix(arg, "--missing=", &arg))
475 continue; /* already handled above */
476 usage(rev_list_usage);
478 }
480 if (revs.commit_format != CMIT_FMT_UNSPECIFIED) {
481 /* The command line has a --pretty */
482 info.hdr_termination = '\n';
483 if (revs.commit_format == CMIT_FMT_ONELINE)
484 info.header_prefix = "";
485 else
486 info.header_prefix = "commit ";
487 }
488 else if (revs.verbose_header)
489 /* Only --header was specified */
490 revs.commit_format = CMIT_FMT_RAW;
491 if ((!revs.commits && reflog_walk_empty(revs.reflog_info) &&
493 (!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
494 !revs.pending.nr) &&
495 !revs.rev_input_given) ||
496 revs.diff)
497 usage(rev_list_usage);
498 if (revs.show_notes)
500 die(_("rev-list does not support display of notes"));
501 if (filter_options.choice && use_bitmap_index)
503 die(_("cannot combine --use-bitmap-index with object filtering"));
504 save_commit_buffer = (revs.verbose_header ||
506 revs.grep_filter.pattern_list ||
507 revs.grep_filter.header_list);
508 if (bisect_list)
509 revs.limited = 1;
510 if (show_progress)
512 progress = start_delayed_progress(show_progress, 0);
513 if (use_bitmap_index && !revs.prune) {
515 if (revs.count && !revs.left_right && !revs.cherry_mark) {
516 uint32_t commit_count;
517 int max_count = revs.max_count;
518 if (!prepare_bitmap_walk(&revs)) {
519 count_bitmap_commit_list(&commit_count, NULL, NULL, NULL);
520 if (max_count >= 0 && max_count < commit_count)
521 commit_count = max_count;
522 printf("%d\n", commit_count);
523 return 0;
524 }
525 } else if (revs.max_count < 0 &&
526 revs.tag_objects && revs.tree_objects && revs.blob_objects) {
527 if (!prepare_bitmap_walk(&revs)) {
528 traverse_bitmap_commit_list(&show_object_fast);
529 return 0;
530 }
531 }
532 }
533 if (prepare_revision_walk(&revs))
535 die("revision walk setup failed");
536 if (revs.tree_objects)
537 mark_edges_uninteresting(&revs, show_edge);
538 if (bisect_list) {
540 int reaches, all;
541 find_bisection(&revs.commits, &reaches, &all, bisect_find_all);
543 if (bisect_show_vars)
545 return show_bisect_vars(&info, reaches, all);
546 }
547 if (arg_print_omitted)
549 oidset_init(&omitted_objects, DEFAULT_OIDSET_SIZE);
550 if (arg_missing_action == MA_PRINT)
551 oidset_init(&missing_objects, DEFAULT_OIDSET_SIZE);
552 traverse_commit_list_filtered(
554 &filter_options, &revs, show_commit, show_object, &info,
555 (arg_print_omitted ? &omitted_objects : NULL));
556 if (arg_print_omitted) {
558 struct oidset_iter iter;
559 struct object_id *oid;
560 oidset_iter_init(&omitted_objects, &iter);
561 while ((oid = oidset_iter_next(&iter)))
562 printf("~%s\n", oid_to_hex(oid));
563 oidset_clear(&omitted_objects);
564 }
565 if (arg_missing_action == MA_PRINT) {
566 struct oidset_iter iter;
567 struct object_id *oid;
568 oidset_iter_init(&missing_objects, &iter);
569 while ((oid = oidset_iter_next(&iter)))
570 printf("?%s\n", oid_to_hex(oid));
571 oidset_clear(&missing_objects);
572 }
573 stop_progress(&progress);
575 if (revs.count) {
577 if (revs.left_right && revs.cherry_mark)
578 printf("%d\t%d\t%d\n", revs.count_left, revs.count_right, revs.count_same);
579 else if (revs.left_right)
580 printf("%d\t%d\n", revs.count_left, revs.count_right);
581 else if (revs.cherry_mark)
582 printf("%d\t%d\n", revs.count_left + revs.count_right, revs.count_same);
583 else
584 printf("%d\n", revs.count_left + revs.count_right);
585 }
586 return 0;
588}