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 "pack.h"
10#include "pack-bitmap.h"
11#include "builtin.h"
12#include "log-tree.h"
13#include "graph.h"
14#include "bisect.h"
15#include "progress.h"
16#include "reflog-walk.h"
17#include "oidset.h"
18#include "packfile.h"
19static const char rev_list_usage[] =
21"git rev-list [OPTION] <commit-id>... [ -- paths... ]\n"
22" limiting output:\n"
23" --max-count=<n>\n"
24" --max-age=<epoch>\n"
25" --min-age=<epoch>\n"
26" --sparse\n"
27" --no-merges\n"
28" --min-parents=<n>\n"
29" --no-min-parents\n"
30" --max-parents=<n>\n"
31" --no-max-parents\n"
32" --remove-empty\n"
33" --all\n"
34" --branches\n"
35" --tags\n"
36" --remotes\n"
37" --stdin\n"
38" --quiet\n"
39" ordering output:\n"
40" --topo-order\n"
41" --date-order\n"
42" --reverse\n"
43" formatting output:\n"
44" --parents\n"
45" --children\n"
46" --objects | --objects-edge\n"
47" --unpacked\n"
48" --header | --pretty\n"
49" --abbrev=<n> | --no-abbrev\n"
50" --abbrev-commit\n"
51" --left-right\n"
52" --count\n"
53" special purpose:\n"
54" --bisect\n"
55" --bisect-vars\n"
56" --bisect-all"
57;
58static struct progress *progress;
60static unsigned progress_counter;
61static struct list_objects_filter_options filter_options;
63static struct oidset omitted_objects;
64static int arg_print_omitted; /* print objects omitted by filter */
65static struct oidset missing_objects;
67enum missing_action {
68 MA_ERROR = 0, /* fail if any missing objects are encountered */
69 MA_ALLOW_ANY, /* silently allow ALL missing objects */
70 MA_PRINT, /* print ALL missing objects in special section */
71 MA_ALLOW_PROMISOR, /* silently allow all missing PROMISOR objects */
72};
73static enum missing_action arg_missing_action;
74#define DEFAULT_OIDSET_SIZE (16*1024)
76static void finish_commit(struct commit *commit, void *data);
78static void show_commit(struct commit *commit, void *data)
79{
80 struct rev_list_info *info = data;
81 struct rev_info *revs = info->revs;
82 display_progress(progress, ++progress_counter);
84 if (info->flags & REV_LIST_QUIET) {
86 finish_commit(commit, data);
87 return;
88 }
89 graph_show_commit(revs->graph);
91 if (revs->count) {
93 if (commit->object.flags & PATCHSAME)
94 revs->count_same++;
95 else if (commit->object.flags & SYMMETRIC_LEFT)
96 revs->count_left++;
97 else
98 revs->count_right++;
99 finish_commit(commit, data);
100 return;
101 }
102 if (info->show_timestamp)
104 printf("%"PRItime" ", commit->date);
105 if (info->header_prefix)
106 fputs(info->header_prefix, stdout);
107 if (!revs->graph)
109 fputs(get_revision_mark(revs, commit), stdout);
110 if (revs->abbrev_commit && revs->abbrev)
111 fputs(find_unique_abbrev(commit->object.oid.hash, revs->abbrev),
112 stdout);
113 else
114 fputs(oid_to_hex(&commit->object.oid), stdout);
115 if (revs->print_parents) {
116 struct commit_list *parents = commit->parents;
117 while (parents) {
118 printf(" %s", oid_to_hex(&parents->item->object.oid));
119 parents = parents->next;
120 }
121 }
122 if (revs->children.name) {
123 struct commit_list *children;
124 children = lookup_decoration(&revs->children, &commit->object);
126 while (children) {
127 printf(" %s", oid_to_hex(&children->item->object.oid));
128 children = children->next;
129 }
130 }
131 show_decorations(revs, commit);
132 if (revs->commit_format == CMIT_FMT_ONELINE)
133 putchar(' ');
134 else
135 putchar('\n');
136 if (revs->verbose_header) {
138 struct strbuf buf = STRBUF_INIT;
139 struct pretty_print_context ctx = {0};
140 ctx.abbrev = revs->abbrev;
141 ctx.date_mode = revs->date_mode;
142 ctx.date_mode_explicit = revs->date_mode_explicit;
143 ctx.fmt = revs->commit_format;
144 ctx.output_encoding = get_log_output_encoding();
145 ctx.color = revs->diffopt.use_color;
146 pretty_print_commit(&ctx, commit, &buf);
147 if (buf.len) {
148 if (revs->commit_format != CMIT_FMT_ONELINE)
149 graph_show_oneline(revs->graph);
150 graph_show_commit_msg(revs->graph, stdout, &buf);
152 /*
154 * Add a newline after the commit message.
155 *
156 * Usually, this newline produces a blank
157 * padding line between entries, in which case
158 * we need to add graph padding on this line.
159 *
160 * However, the commit message may not end in a
161 * newline. In this case the newline simply
162 * ends the last line of the commit message,
163 * and we don't need any graph output. (This
164 * always happens with CMIT_FMT_ONELINE, and it
165 * happens with CMIT_FMT_USERFORMAT when the
166 * format doesn't explicitly end in a newline.)
167 */
168 if (buf.len && buf.buf[buf.len - 1] == '\n')
169 graph_show_padding(revs->graph);
170 putchar(info->hdr_termination);
171 } else {
172 /*
173 * If the message buffer is empty, just show
174 * the rest of the graph output for this
175 * commit.
176 */
177 if (graph_show_remainder(revs->graph))
178 putchar('\n');
179 if (revs->commit_format == CMIT_FMT_ONELINE)
180 putchar('\n');
181 }
182 strbuf_release(&buf);
183 } else {
184 if (graph_show_remainder(revs->graph))
185 putchar('\n');
186 }
187 maybe_flush_or_die(stdout, "stdout");
188 finish_commit(commit, data);
189}
190static void finish_commit(struct commit *commit, void *data)
192{
193 if (commit->parents) {
194 free_commit_list(commit->parents);
195 commit->parents = NULL;
196 }
197 free_commit_buffer(commit);
198}
199static inline void finish_object__ma(struct object *obj)
201{
202 /*
203 * Whether or not we try to dynamically fetch missing objects
204 * from the server, we currently DO NOT have the object. We
205 * can either print, allow (ignore), or conditionally allow
206 * (ignore) them.
207 */
208 switch (arg_missing_action) {
209 case MA_ERROR:
210 die("missing blob object '%s'", oid_to_hex(&obj->oid));
211 return;
212 case MA_ALLOW_ANY:
214 return;
215 case MA_PRINT:
217 oidset_insert(&missing_objects, &obj->oid);
218 return;
219 case MA_ALLOW_PROMISOR:
221 if (is_promisor_object(&obj->oid))
222 return;
223 die("unexpected missing blob object '%s'",
224 oid_to_hex(&obj->oid));
225 return;
226 default:
228 BUG("unhandled missing_action");
229 return;
230 }
231}
232static int finish_object(struct object *obj, const char *name, void *cb_data)
234{
235 struct rev_list_info *info = cb_data;
236 if (obj->type == OBJ_BLOB && !has_object_file(&obj->oid)) {
237 finish_object__ma(obj);
238 return 1;
239 }
240 if (info->revs->verify_objects && !obj->parsed && obj->type != OBJ_COMMIT)
241 parse_object(&obj->oid);
242 return 0;
243}
244static void show_object(struct object *obj, const char *name, void *cb_data)
246{
247 struct rev_list_info *info = cb_data;
248 if (finish_object(obj, name, cb_data))
249 return;
250 display_progress(progress, ++progress_counter);
251 if (info->flags & REV_LIST_QUIET)
252 return;
253 show_object_with_name(stdout, obj, name);
254}
255static void show_edge(struct commit *commit)
257{
258 printf("-%s\n", oid_to_hex(&commit->object.oid));
259}
260static void print_var_str(const char *var, const char *val)
262{
263 printf("%s='%s'\n", var, val);
264}
265static void print_var_int(const char *var, int val)
267{
268 printf("%s=%d\n", var, val);
269}
270static int show_bisect_vars(struct rev_list_info *info, int reaches, int all)
272{
273 int cnt, flags = info->flags;
274 char hex[GIT_MAX_HEXSZ + 1] = "";
275 struct commit_list *tried;
276 struct rev_info *revs = info->revs;
277 if (!revs->commits)
279 return 1;
280 revs->commits = filter_skipped(revs->commits, &tried,
282 flags & BISECT_SHOW_ALL,
283 NULL, NULL);
284 /*
286 * revs->commits can reach "reaches" commits among
287 * "all" commits. If it is good, then there are
288 * (all-reaches) commits left to be bisected.
289 * On the other hand, if it is bad, then the set
290 * to bisect is "reaches".
291 * A bisect set of size N has (N-1) commits further
292 * to test, as we already know one bad one.
293 */
294 cnt = all - reaches;
295 if (cnt < reaches)
296 cnt = reaches;
297 if (revs->commits)
299 oid_to_hex_r(hex, &revs->commits->item->object.oid);
300 if (flags & BISECT_SHOW_ALL) {
302 traverse_commit_list(revs, show_commit, show_object, info);
303 printf("------\n");
304 }
305 print_var_str("bisect_rev", hex);
307 print_var_int("bisect_nr", cnt - 1);
308 print_var_int("bisect_good", all - reaches - 1);
309 print_var_int("bisect_bad", reaches - 1);
310 print_var_int("bisect_all", all);
311 print_var_int("bisect_steps", estimate_bisect_steps(all));
312 return 0;
314}
315static int show_object_fast(
317 const struct object_id *oid,
318 enum object_type type,
319 int exclude,
320 uint32_t name_hash,
321 struct packed_git *found_pack,
322 off_t found_offset)
323{
324 fprintf(stdout, "%s\n", oid_to_hex(oid));
325 return 1;
326}
327static inline int parse_missing_action_value(const char *value)
329{
330 if (!strcmp(value, "error")) {
331 arg_missing_action = MA_ERROR;
332 return 1;
333 }
334 if (!strcmp(value, "allow-any")) {
336 arg_missing_action = MA_ALLOW_ANY;
337 fetch_if_missing = 0;
338 return 1;
339 }
340 if (!strcmp(value, "print")) {
342 arg_missing_action = MA_PRINT;
343 fetch_if_missing = 0;
344 return 1;
345 }
346 if (!strcmp(value, "allow-promisor")) {
348 arg_missing_action = MA_ALLOW_PROMISOR;
349 fetch_if_missing = 0;
350 return 1;
351 }
352 return 0;
354}
355int cmd_rev_list(int argc, const char **argv, const char *prefix)
357{
358 struct rev_info revs;
359 struct rev_list_info info;
360 struct setup_revision_opt s_r_opt = {
361 .allow_exclude_promisor_objects = 1,
362 };
363 int i;
364 int bisect_list = 0;
365 int bisect_show_vars = 0;
366 int bisect_find_all = 0;
367 int use_bitmap_index = 0;
368 const char *show_progress = NULL;
369 if (argc == 2 && !strcmp(argv[1], "-h"))
371 usage(rev_list_usage);
372 git_config(git_default_config, NULL);
374 init_revisions(&revs, prefix);
375 revs.abbrev = DEFAULT_ABBREV;
376 revs.commit_format = CMIT_FMT_UNSPECIFIED;
377 /*
379 * Scan the argument list before invoking setup_revisions(), so that we
380 * know if fetch_if_missing needs to be set to 0.
381 *
382 * "--exclude-promisor-objects" acts as a pre-filter on missing objects
383 * by not crossing the boundary from realized objects to promisor
384 * objects.
385 *
386 * Let "--missing" to conditionally set fetch_if_missing.
387 */
388 for (i = 1; i < argc; i++) {
389 const char *arg = argv[i];
390 if (!strcmp(arg, "--exclude-promisor-objects")) {
391 fetch_if_missing = 0;
392 revs.exclude_promisor_objects = 1;
393 break;
394 }
395 }
396 for (i = 1; i < argc; i++) {
397 const char *arg = argv[i];
398 if (skip_prefix(arg, "--missing=", &arg)) {
399 if (revs.exclude_promisor_objects)
400 die(_("cannot combine --exclude-promisor-objects and --missing"));
401 if (parse_missing_action_value(arg))
402 break;
403 }
404 }
405 argc = setup_revisions(argc, argv, &revs, &s_r_opt);
407 memset(&info, 0, sizeof(info));
409 info.revs = &revs;
410 if (revs.bisect)
411 bisect_list = 1;
412 if (revs.diffopt.flags.quick)
414 info.flags |= REV_LIST_QUIET;
415 for (i = 1 ; i < argc; i++) {
416 const char *arg = argv[i];
417 if (!strcmp(arg, "--header")) {
419 revs.verbose_header = 1;
420 continue;
421 }
422 if (!strcmp(arg, "--timestamp")) {
423 info.show_timestamp = 1;
424 continue;
425 }
426 if (!strcmp(arg, "--bisect")) {
427 bisect_list = 1;
428 continue;
429 }
430 if (!strcmp(arg, "--bisect-all")) {
431 bisect_list = 1;
432 bisect_find_all = 1;
433 info.flags |= BISECT_SHOW_ALL;
434 revs.show_decorations = 1;
435 continue;
436 }
437 if (!strcmp(arg, "--bisect-vars")) {
438 bisect_list = 1;
439 bisect_show_vars = 1;
440 continue;
441 }
442 if (!strcmp(arg, "--use-bitmap-index")) {
443 use_bitmap_index = 1;
444 continue;
445 }
446 if (!strcmp(arg, "--test-bitmap")) {
447 test_bitmap_walk(&revs);
448 return 0;
449 }
450 if (skip_prefix(arg, "--progress=", &arg)) {
451 show_progress = arg;
452 continue;
453 }
454 if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
456 parse_list_objects_filter(&filter_options, arg);
457 if (filter_options.choice && !revs.blob_objects)
458 die(_("object filtering requires --objects"));
459 if (filter_options.choice == LOFC_SPARSE_OID &&
460 !filter_options.sparse_oid_value)
461 die(_("invalid sparse value '%s'"),
462 filter_options.filter_spec);
463 continue;
464 }
465 if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
466 list_objects_filter_set_no_filter(&filter_options);
467 continue;
468 }
469 if (!strcmp(arg, "--filter-print-omitted")) {
470 arg_print_omitted = 1;
471 continue;
472 }
473 if (!strcmp(arg, "--exclude-promisor-objects"))
475 continue; /* already handled above */
476 if (skip_prefix(arg, "--missing=", &arg))
477 continue; /* already handled above */
478 usage(rev_list_usage);
480 }
482 if (revs.commit_format != CMIT_FMT_UNSPECIFIED) {
483 /* The command line has a --pretty */
484 info.hdr_termination = '\n';
485 if (revs.commit_format == CMIT_FMT_ONELINE)
486 info.header_prefix = "";
487 else
488 info.header_prefix = "commit ";
489 }
490 else if (revs.verbose_header)
491 /* Only --header was specified */
492 revs.commit_format = CMIT_FMT_RAW;
493 if ((!revs.commits && reflog_walk_empty(revs.reflog_info) &&
495 (!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
496 !revs.pending.nr) &&
497 !revs.rev_input_given) ||
498 revs.diff)
499 usage(rev_list_usage);
500 if (revs.show_notes)
502 die(_("rev-list does not support display of notes"));
503 if (filter_options.choice && use_bitmap_index)
505 die(_("cannot combine --use-bitmap-index with object filtering"));
506 save_commit_buffer = (revs.verbose_header ||
508 revs.grep_filter.pattern_list ||
509 revs.grep_filter.header_list);
510 if (bisect_list)
511 revs.limited = 1;
512 if (show_progress)
514 progress = start_delayed_progress(show_progress, 0);
515 if (use_bitmap_index && !revs.prune) {
517 if (revs.count && !revs.left_right && !revs.cherry_mark) {
518 uint32_t commit_count;
519 int max_count = revs.max_count;
520 if (!prepare_bitmap_walk(&revs)) {
521 count_bitmap_commit_list(&commit_count, NULL, NULL, NULL);
522 if (max_count >= 0 && max_count < commit_count)
523 commit_count = max_count;
524 printf("%d\n", commit_count);
525 return 0;
526 }
527 } else if (revs.max_count < 0 &&
528 revs.tag_objects && revs.tree_objects && revs.blob_objects) {
529 if (!prepare_bitmap_walk(&revs)) {
530 traverse_bitmap_commit_list(&show_object_fast);
531 return 0;
532 }
533 }
534 }
535 if (prepare_revision_walk(&revs))
537 die("revision walk setup failed");
538 if (revs.tree_objects)
539 mark_edges_uninteresting(&revs, show_edge);
540 if (bisect_list) {
542 int reaches, all;
543 find_bisection(&revs.commits, &reaches, &all, bisect_find_all);
545 if (bisect_show_vars)
547 return show_bisect_vars(&info, reaches, all);
548 }
549 if (arg_print_omitted)
551 oidset_init(&omitted_objects, DEFAULT_OIDSET_SIZE);
552 if (arg_missing_action == MA_PRINT)
553 oidset_init(&missing_objects, DEFAULT_OIDSET_SIZE);
554 traverse_commit_list_filtered(
556 &filter_options, &revs, show_commit, show_object, &info,
557 (arg_print_omitted ? &omitted_objects : NULL));
558 if (arg_print_omitted) {
560 struct oidset_iter iter;
561 struct object_id *oid;
562 oidset_iter_init(&omitted_objects, &iter);
563 while ((oid = oidset_iter_next(&iter)))
564 printf("~%s\n", oid_to_hex(oid));
565 oidset_clear(&omitted_objects);
566 }
567 if (arg_missing_action == MA_PRINT) {
568 struct oidset_iter iter;
569 struct object_id *oid;
570 oidset_iter_init(&missing_objects, &iter);
571 while ((oid = oidset_iter_next(&iter)))
572 printf("?%s\n", oid_to_hex(oid));
573 oidset_clear(&missing_objects);
574 }
575 stop_progress(&progress);
577 if (revs.count) {
579 if (revs.left_right && revs.cherry_mark)
580 printf("%d\t%d\t%d\n", revs.count_left, revs.count_right, revs.count_same);
581 else if (revs.left_right)
582 printf("%d\t%d\n", revs.count_left, revs.count_right);
583 else if (revs.cherry_mark)
584 printf("%d\t%d\n", revs.count_left + revs.count_right, revs.count_same);
585 else
586 printf("%d\n", revs.count_left + revs.count_right);
587 }
588 return 0;
590}