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" special purpose:\n"
46" --bisect\n"
47" --bisect-vars\n"
48" --bisect-all"
49;
50static void finish_commit(struct commit *commit, void *data);
52static void show_commit(struct commit *commit, void *data)
53{
54 struct rev_list_info *info = data;
55 struct rev_info *revs = info->revs;
56 if (info->flags & REV_LIST_QUIET) {
58 finish_commit(commit, data);
59 return;
60 }
61 graph_show_commit(revs->graph);
63 if (revs->count) {
65 if (commit->object.flags & PATCHSAME)
66 revs->count_same++;
67 else if (commit->object.flags & SYMMETRIC_LEFT)
68 revs->count_left++;
69 else
70 revs->count_right++;
71 finish_commit(commit, data);
72 return;
73 }
74 if (info->show_timestamp)
76 printf("%lu ", commit->date);
77 if (info->header_prefix)
78 fputs(info->header_prefix, stdout);
79 if (!revs->graph)
81 fputs(get_revision_mark(revs, commit), stdout);
82 if (revs->abbrev_commit && revs->abbrev)
83 fputs(find_unique_abbrev(commit->object.sha1, revs->abbrev),
84 stdout);
85 else
86 fputs(sha1_to_hex(commit->object.sha1), stdout);
87 if (revs->print_parents) {
88 struct commit_list *parents = commit->parents;
89 while (parents) {
90 printf(" %s", sha1_to_hex(parents->item->object.sha1));
91 parents = parents->next;
92 }
93 }
94 if (revs->children.name) {
95 struct commit_list *children;
96 children = lookup_decoration(&revs->children, &commit->object);
98 while (children) {
99 printf(" %s", sha1_to_hex(children->item->object.sha1));
100 children = children->next;
101 }
102 }
103 show_decorations(revs, commit);
104 if (revs->commit_format == CMIT_FMT_ONELINE)
105 putchar(' ');
106 else
107 putchar('\n');
108 if (revs->verbose_header && get_cached_commit_buffer(commit, NULL)) {
110 struct strbuf buf = STRBUF_INIT;
111 struct pretty_print_context ctx = {0};
112 ctx.abbrev = revs->abbrev;
113 ctx.date_mode = revs->date_mode;
114 ctx.date_mode_explicit = revs->date_mode_explicit;
115 ctx.fmt = revs->commit_format;
116 ctx.output_encoding = get_log_output_encoding();
117 pretty_print_commit(&ctx, commit, &buf);
118 if (revs->graph) {
119 if (buf.len) {
120 if (revs->commit_format != CMIT_FMT_ONELINE)
121 graph_show_oneline(revs->graph);
122 graph_show_commit_msg(revs->graph, &buf);
124 /*
126 * Add a newline after the commit message.
127 *
128 * Usually, this newline produces a blank
129 * padding line between entries, in which case
130 * we need to add graph padding on this line.
131 *
132 * However, the commit message may not end in a
133 * newline. In this case the newline simply
134 * ends the last line of the commit message,
135 * and we don't need any graph output. (This
136 * always happens with CMIT_FMT_ONELINE, and it
137 * happens with CMIT_FMT_USERFORMAT when the
138 * format doesn't explicitly end in a newline.)
139 */
140 if (buf.len && buf.buf[buf.len - 1] == '\n')
141 graph_show_padding(revs->graph);
142 putchar('\n');
143 } else {
144 /*
145 * If the message buffer is empty, just show
146 * the rest of the graph output for this
147 * commit.
148 */
149 if (graph_show_remainder(revs->graph))
150 putchar('\n');
151 if (revs->commit_format == CMIT_FMT_ONELINE)
152 putchar('\n');
153 }
154 } else {
155 if (revs->commit_format != CMIT_FMT_USERFORMAT ||
156 buf.len) {
157 fwrite(buf.buf, 1, buf.len, stdout);
158 putchar(info->hdr_termination);
159 }
160 }
161 strbuf_release(&buf);
162 } else {
163 if (graph_show_remainder(revs->graph))
164 putchar('\n');
165 }
166 maybe_flush_or_die(stdout, "stdout");
167 finish_commit(commit, data);
168}
169static void finish_commit(struct commit *commit, void *data)
171{
172 if (commit->parents) {
173 free_commit_list(commit->parents);
174 commit->parents = NULL;
175 }
176 free_commit_buffer(commit);
177}
178static void finish_object(struct object *obj,
180 const struct name_path *path, const char *name,
181 void *cb_data)
182{
183 struct rev_list_info *info = cb_data;
184 if (obj->type == OBJ_BLOB && !has_sha1_file(obj->sha1))
185 die("missing blob object '%s'", sha1_to_hex(obj->sha1));
186 if (info->revs->verify_objects && !obj->parsed && obj->type != OBJ_COMMIT)
187 parse_object(obj->sha1);
188}
189static void show_object(struct object *obj,
191 const struct name_path *path, const char *component,
192 void *cb_data)
193{
194 struct rev_list_info *info = cb_data;
195 finish_object(obj, path, component, cb_data);
196 if (info->flags & REV_LIST_QUIET)
197 return;
198 show_object_with_name(stdout, obj, path, component);
199}
200static void show_edge(struct commit *commit)
202{
203 printf("-%s\n", sha1_to_hex(commit->object.sha1));
204}
205static void print_var_str(const char *var, const char *val)
207{
208 printf("%s='%s'\n", var, val);
209}
210static void print_var_int(const char *var, int val)
212{
213 printf("%s=%d\n", var, val);
214}
215static int show_bisect_vars(struct rev_list_info *info, int reaches, int all)
217{
218 int cnt, flags = info->flags;
219 char hex[41] = "";
220 struct commit_list *tried;
221 struct rev_info *revs = info->revs;
222 if (!revs->commits)
224 return 1;
225 revs->commits = filter_skipped(revs->commits, &tried,
227 flags & BISECT_SHOW_ALL,
228 NULL, NULL);
229 /*
231 * revs->commits can reach "reaches" commits among
232 * "all" commits. If it is good, then there are
233 * (all-reaches) commits left to be bisected.
234 * On the other hand, if it is bad, then the set
235 * to bisect is "reaches".
236 * A bisect set of size N has (N-1) commits further
237 * to test, as we already know one bad one.
238 */
239 cnt = all - reaches;
240 if (cnt < reaches)
241 cnt = reaches;
242 if (revs->commits)
244 strcpy(hex, sha1_to_hex(revs->commits->item->object.sha1));
245 if (flags & BISECT_SHOW_ALL) {
247 traverse_commit_list(revs, show_commit, show_object, info);
248 printf("------\n");
249 }
250 print_var_str("bisect_rev", hex);
252 print_var_int("bisect_nr", cnt - 1);
253 print_var_int("bisect_good", all - reaches - 1);
254 print_var_int("bisect_bad", reaches - 1);
255 print_var_int("bisect_all", all);
256 print_var_int("bisect_steps", estimate_bisect_steps(all));
257 return 0;
259}
260static int show_object_fast(
262 const unsigned char *sha1,
263 enum object_type type,
264 int exclude,
265 uint32_t name_hash,
266 struct packed_git *found_pack,
267 off_t found_offset)
268{
269 fprintf(stdout, "%s\n", sha1_to_hex(sha1));
270 return 1;
271}
272int cmd_rev_list(int argc, const char **argv, const char *prefix)
274{
275 struct rev_info revs;
276 struct rev_list_info info;
277 int i;
278 int bisect_list = 0;
279 int bisect_show_vars = 0;
280 int bisect_find_all = 0;
281 int use_bitmap_index = 0;
282 git_config(git_default_config, NULL);
284 init_revisions(&revs, prefix);
285 revs.abbrev = DEFAULT_ABBREV;
286 revs.commit_format = CMIT_FMT_UNSPECIFIED;
287 argc = setup_revisions(argc, argv, &revs, NULL);
288 memset(&info, 0, sizeof(info));
290 info.revs = &revs;
291 if (revs.bisect)
292 bisect_list = 1;
293 if (DIFF_OPT_TST(&revs.diffopt, QUICK))
295 info.flags |= REV_LIST_QUIET;
296 for (i = 1 ; i < argc; i++) {
297 const char *arg = argv[i];
298 if (!strcmp(arg, "--header")) {
300 revs.verbose_header = 1;
301 continue;
302 }
303 if (!strcmp(arg, "--timestamp")) {
304 info.show_timestamp = 1;
305 continue;
306 }
307 if (!strcmp(arg, "--bisect")) {
308 bisect_list = 1;
309 continue;
310 }
311 if (!strcmp(arg, "--bisect-all")) {
312 bisect_list = 1;
313 bisect_find_all = 1;
314 info.flags |= BISECT_SHOW_ALL;
315 revs.show_decorations = 1;
316 continue;
317 }
318 if (!strcmp(arg, "--bisect-vars")) {
319 bisect_list = 1;
320 bisect_show_vars = 1;
321 continue;
322 }
323 if (!strcmp(arg, "--use-bitmap-index")) {
324 use_bitmap_index = 1;
325 continue;
326 }
327 if (!strcmp(arg, "--test-bitmap")) {
328 test_bitmap_walk(&revs);
329 return 0;
330 }
331 usage(rev_list_usage);
332 }
334 if (revs.commit_format != CMIT_FMT_UNSPECIFIED) {
335 /* The command line has a --pretty */
336 info.hdr_termination = '\n';
337 if (revs.commit_format == CMIT_FMT_ONELINE)
338 info.header_prefix = "";
339 else
340 info.header_prefix = "commit ";
341 }
342 else if (revs.verbose_header)
343 /* Only --header was specified */
344 revs.commit_format = CMIT_FMT_RAW;
345 if ((!revs.commits &&
347 (!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
348 !revs.pending.nr)) ||
349 revs.diff)
350 usage(rev_list_usage);
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 if (!prepare_bitmap_walk(&revs)) {
362 count_bitmap_commit_list(&commit_count, NULL, NULL, NULL);
363 printf("%d\n", commit_count);
364 return 0;
365 }
366 } else if (revs.tag_objects && revs.tree_objects && revs.blob_objects) {
367 if (!prepare_bitmap_walk(&revs)) {
368 traverse_bitmap_commit_list(&show_object_fast);
369 return 0;
370 }
371 }
372 }
373 if (prepare_revision_walk(&revs))
375 die("revision walk setup failed");
376 if (revs.tree_objects)
377 mark_edges_uninteresting(&revs, show_edge);
378 if (bisect_list) {
380 int reaches = reaches, all = all;
381 revs.commits = find_bisection(revs.commits, &reaches, &all,
383 bisect_find_all);
384 if (bisect_show_vars)
386 return show_bisect_vars(&info, reaches, all);
387 }
388 traverse_commit_list(&revs, show_commit, show_object, &info);
390 if (revs.count) {
392 if (revs.left_right && revs.cherry_mark)
393 printf("%d\t%d\t%d\n", revs.count_left, revs.count_right, revs.count_same);
394 else if (revs.left_right)
395 printf("%d\t%d\n", revs.count_left, revs.count_right);
396 else if (revs.cherry_mark)
397 printf("%d\t%d\n", revs.count_left + revs.count_right, revs.count_same);
398 else
399 printf("%d\n", revs.count_left + revs.count_right);
400 }
401 return 0;
403}