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