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1bf072e3 CC |
1 | #include "builtin.h" |
2 | #include "cache.h" | |
3 | #include "parse-options.h" | |
4 | #include "bisect.h" | |
4ba1e5c4 | 5 | #include "refs.h" |
5e82c3dd PB |
6 | #include "dir.h" |
7 | #include "argv-array.h" | |
8 | #include "run-command.h" | |
129a6cf3 | 9 | #include "prompt.h" |
06f5608c | 10 | #include "quote.h" |
1bf072e3 | 11 | |
ecb3f373 | 12 | static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS") |
b903674b PB |
13 | static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV") |
14 | static GIT_PATH_FUNC(git_path_bisect_ancestors_ok, "BISECT_ANCESTORS_OK") | |
5e82c3dd PB |
15 | static GIT_PATH_FUNC(git_path_bisect_start, "BISECT_START") |
16 | static GIT_PATH_FUNC(git_path_bisect_head, "BISECT_HEAD") | |
0f30233a | 17 | static GIT_PATH_FUNC(git_path_bisect_log, "BISECT_LOG") |
06f5608c PB |
18 | static GIT_PATH_FUNC(git_path_head_name, "head-name") |
19 | static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES") | |
e8861ffc | 20 | static GIT_PATH_FUNC(git_path_bisect_first_parent, "BISECT_FIRST_PARENT") |
ecb3f373 | 21 | |
1bf072e3 | 22 | static const char * const git_bisect_helper_usage[] = { |
be5fe200 | 23 | N_("git bisect--helper --next-all"), |
ecb3f373 | 24 | N_("git bisect--helper --write-terms <bad_term> <good_term>"), |
fb71a329 | 25 | N_("git bisect--helper --bisect-clean-state"), |
5e82c3dd | 26 | N_("git bisect--helper --bisect-reset [<commit>]"), |
0f30233a | 27 | N_("git bisect--helper --bisect-write [--no-log] <state> <revision> <good_term> <bad_term>"), |
4fbdbd5b | 28 | N_("git bisect--helper --bisect-check-and-set-terms <command> <good_term> <bad_term>"), |
129a6cf3 | 29 | N_("git bisect--helper --bisect-next-check <good_term> <bad_term> [<term>]"), |
450ebb73 | 30 | N_("git bisect--helper --bisect-terms [--term-good | --term-old | --term-bad | --term-new]"), |
06f5608c | 31 | N_("git bisect--helper --bisect-start [--term-{old,good}=<term> --term-{new,bad}=<term>]" |
e8861ffc | 32 | " [--no-checkout] [--first-parent] [<bad> [<good>...]] [--] [<paths>...]"), |
1bf072e3 CC |
33 | NULL |
34 | }; | |
35 | ||
0f30233a PB |
36 | struct bisect_terms { |
37 | char *term_good; | |
38 | char *term_bad; | |
39 | }; | |
40 | ||
41 | static void free_terms(struct bisect_terms *terms) | |
42 | { | |
43 | FREE_AND_NULL(terms->term_good); | |
44 | FREE_AND_NULL(terms->term_bad); | |
45 | } | |
46 | ||
47 | static void set_terms(struct bisect_terms *terms, const char *bad, | |
48 | const char *good) | |
49 | { | |
50 | free((void *)terms->term_good); | |
51 | terms->term_good = xstrdup(good); | |
52 | free((void *)terms->term_bad); | |
53 | terms->term_bad = xstrdup(bad); | |
54 | } | |
55 | ||
16538bfd MR |
56 | static const char vocab_bad[] = "bad|new"; |
57 | static const char vocab_good[] = "good|old"; | |
129a6cf3 | 58 | |
4ba1e5c4 PB |
59 | /* |
60 | * Check whether the string `term` belongs to the set of strings | |
61 | * included in the variable arguments. | |
62 | */ | |
63 | LAST_ARG_MUST_BE_NULL | |
64 | static int one_of(const char *term, ...) | |
65 | { | |
66 | int res = 0; | |
67 | va_list matches; | |
68 | const char *match; | |
69 | ||
70 | va_start(matches, term); | |
71 | while (!res && (match = va_arg(matches, const char *))) | |
72 | res = !strcmp(term, match); | |
73 | va_end(matches); | |
74 | ||
75 | return res; | |
76 | } | |
77 | ||
78 | static int check_term_format(const char *term, const char *orig_term) | |
79 | { | |
80 | int res; | |
81 | char *new_term = xstrfmt("refs/bisect/%s", term); | |
82 | ||
83 | res = check_refname_format(new_term, 0); | |
84 | free(new_term); | |
85 | ||
86 | if (res) | |
87 | return error(_("'%s' is not a valid term"), term); | |
88 | ||
89 | if (one_of(term, "help", "start", "skip", "next", "reset", | |
dbc349bb | 90 | "visualize", "view", "replay", "log", "run", "terms", NULL)) |
4ba1e5c4 PB |
91 | return error(_("can't use the builtin command '%s' as a term"), term); |
92 | ||
93 | /* | |
94 | * In theory, nothing prevents swapping completely good and bad, | |
95 | * but this situation could be confusing and hasn't been tested | |
96 | * enough. Forbid it for now. | |
97 | */ | |
98 | ||
99 | if ((strcmp(orig_term, "bad") && one_of(term, "bad", "new", NULL)) || | |
100 | (strcmp(orig_term, "good") && one_of(term, "good", "old", NULL))) | |
101 | return error(_("can't change the meaning of the term '%s'"), term); | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
ecb3f373 PB |
106 | static int write_terms(const char *bad, const char *good) |
107 | { | |
108 | FILE *fp = NULL; | |
109 | int res; | |
110 | ||
111 | if (!strcmp(bad, good)) | |
112 | return error(_("please use two different terms")); | |
113 | ||
114 | if (check_term_format(bad, "bad") || check_term_format(good, "good")) | |
115 | return -1; | |
116 | ||
117 | fp = fopen(git_path_bisect_terms(), "w"); | |
118 | if (!fp) | |
119 | return error_errno(_("could not open the file BISECT_TERMS")); | |
120 | ||
121 | res = fprintf(fp, "%s\n%s\n", bad, good); | |
122 | res |= fclose(fp); | |
123 | return (res < 0) ? -1 : 0; | |
124 | } | |
125 | ||
b903674b PB |
126 | static int is_expected_rev(const char *expected_hex) |
127 | { | |
128 | struct strbuf actual_hex = STRBUF_INIT; | |
129 | int res = 0; | |
130 | if (strbuf_read_file(&actual_hex, git_path_bisect_expected_rev(), 0) >= 40) { | |
131 | strbuf_trim(&actual_hex); | |
132 | res = !strcmp(actual_hex.buf, expected_hex); | |
133 | } | |
134 | strbuf_release(&actual_hex); | |
135 | return res; | |
136 | } | |
137 | ||
138 | static void check_expected_revs(const char **revs, int rev_nr) | |
139 | { | |
140 | int i; | |
141 | ||
142 | for (i = 0; i < rev_nr; i++) { | |
143 | if (!is_expected_rev(revs[i])) { | |
144 | unlink_or_warn(git_path_bisect_ancestors_ok()); | |
145 | unlink_or_warn(git_path_bisect_expected_rev()); | |
146 | } | |
147 | } | |
148 | } | |
149 | ||
5e82c3dd PB |
150 | static int bisect_reset(const char *commit) |
151 | { | |
152 | struct strbuf branch = STRBUF_INIT; | |
153 | ||
154 | if (!commit) { | |
155 | if (strbuf_read_file(&branch, git_path_bisect_start(), 0) < 1) { | |
156 | printf(_("We are not bisecting.\n")); | |
157 | return 0; | |
158 | } | |
159 | strbuf_rtrim(&branch); | |
160 | } else { | |
161 | struct object_id oid; | |
162 | ||
163 | if (get_oid_commit(commit, &oid)) | |
164 | return error(_("'%s' is not a valid commit"), commit); | |
165 | strbuf_addstr(&branch, commit); | |
166 | } | |
167 | ||
168 | if (!file_exists(git_path_bisect_head())) { | |
169 | struct argv_array argv = ARGV_ARRAY_INIT; | |
170 | ||
171 | argv_array_pushl(&argv, "checkout", branch.buf, "--", NULL); | |
172 | if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) { | |
51a0a4ed TT |
173 | error(_("could not check out original" |
174 | " HEAD '%s'. Try 'git bisect" | |
175 | " reset <commit>'."), branch.buf); | |
5e82c3dd PB |
176 | strbuf_release(&branch); |
177 | argv_array_clear(&argv); | |
51a0a4ed | 178 | return -1; |
5e82c3dd PB |
179 | } |
180 | argv_array_clear(&argv); | |
181 | } | |
182 | ||
183 | strbuf_release(&branch); | |
184 | return bisect_clean_state(); | |
185 | } | |
186 | ||
0f30233a PB |
187 | static void log_commit(FILE *fp, char *fmt, const char *state, |
188 | struct commit *commit) | |
189 | { | |
190 | struct pretty_print_context pp = {0}; | |
191 | struct strbuf commit_msg = STRBUF_INIT; | |
192 | char *label = xstrfmt(fmt, state); | |
193 | ||
194 | format_commit_message(commit, "%s", &commit_msg, &pp); | |
195 | ||
196 | fprintf(fp, "# %s: [%s] %s\n", label, oid_to_hex(&commit->object.oid), | |
197 | commit_msg.buf); | |
198 | ||
199 | strbuf_release(&commit_msg); | |
200 | free(label); | |
201 | } | |
202 | ||
203 | static int bisect_write(const char *state, const char *rev, | |
204 | const struct bisect_terms *terms, int nolog) | |
205 | { | |
206 | struct strbuf tag = STRBUF_INIT; | |
207 | struct object_id oid; | |
208 | struct commit *commit; | |
209 | FILE *fp = NULL; | |
292731c4 | 210 | int res = 0; |
0f30233a PB |
211 | |
212 | if (!strcmp(state, terms->term_bad)) { | |
213 | strbuf_addf(&tag, "refs/bisect/%s", state); | |
214 | } else if (one_of(state, terms->term_good, "skip", NULL)) { | |
215 | strbuf_addf(&tag, "refs/bisect/%s-%s", state, rev); | |
216 | } else { | |
292731c4 | 217 | res = error(_("Bad bisect_write argument: %s"), state); |
0f30233a PB |
218 | goto finish; |
219 | } | |
220 | ||
221 | if (get_oid(rev, &oid)) { | |
292731c4 | 222 | res = error(_("couldn't get the oid of the rev '%s'"), rev); |
0f30233a PB |
223 | goto finish; |
224 | } | |
225 | ||
226 | if (update_ref(NULL, tag.buf, &oid, NULL, 0, | |
227 | UPDATE_REFS_MSG_ON_ERR)) { | |
292731c4 | 228 | res = -1; |
0f30233a PB |
229 | goto finish; |
230 | } | |
231 | ||
232 | fp = fopen(git_path_bisect_log(), "a"); | |
233 | if (!fp) { | |
292731c4 | 234 | res = error_errno(_("couldn't open the file '%s'"), git_path_bisect_log()); |
0f30233a PB |
235 | goto finish; |
236 | } | |
237 | ||
238 | commit = lookup_commit_reference(the_repository, &oid); | |
239 | log_commit(fp, "%s", state, commit); | |
240 | ||
241 | if (!nolog) | |
242 | fprintf(fp, "git bisect %s %s\n", state, rev); | |
243 | ||
244 | finish: | |
245 | if (fp) | |
246 | fclose(fp); | |
247 | strbuf_release(&tag); | |
292731c4 | 248 | return res; |
0f30233a PB |
249 | } |
250 | ||
4fbdbd5b PB |
251 | static int check_and_set_terms(struct bisect_terms *terms, const char *cmd) |
252 | { | |
253 | int has_term_file = !is_empty_or_missing_file(git_path_bisect_terms()); | |
254 | ||
255 | if (one_of(cmd, "skip", "start", "terms", NULL)) | |
256 | return 0; | |
257 | ||
258 | if (has_term_file && strcmp(cmd, terms->term_bad) && | |
259 | strcmp(cmd, terms->term_good)) | |
260 | return error(_("Invalid command: you're currently in a " | |
261 | "%s/%s bisect"), terms->term_bad, | |
262 | terms->term_good); | |
263 | ||
264 | if (!has_term_file) { | |
265 | if (one_of(cmd, "bad", "good", NULL)) { | |
266 | set_terms(terms, "bad", "good"); | |
267 | return write_terms(terms->term_bad, terms->term_good); | |
268 | } | |
269 | if (one_of(cmd, "new", "old", NULL)) { | |
270 | set_terms(terms, "new", "old"); | |
271 | return write_terms(terms->term_bad, terms->term_good); | |
272 | } | |
273 | } | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
129a6cf3 PB |
278 | static int mark_good(const char *refname, const struct object_id *oid, |
279 | int flag, void *cb_data) | |
280 | { | |
281 | int *m_good = (int *)cb_data; | |
282 | *m_good = 0; | |
283 | return 1; | |
284 | } | |
285 | ||
7c5cea72 | 286 | static const char need_bad_and_good_revision_warning[] = |
129a6cf3 PB |
287 | N_("You need to give me at least one %s and %s revision.\n" |
288 | "You can use \"git bisect %s\" and \"git bisect %s\" for that."); | |
289 | ||
7c5cea72 | 290 | static const char need_bisect_start_warning[] = |
129a6cf3 PB |
291 | N_("You need to start by \"git bisect start\".\n" |
292 | "You then need to give me at least one %s and %s revision.\n" | |
293 | "You can use \"git bisect %s\" and \"git bisect %s\" for that."); | |
294 | ||
bfacfce7 TT |
295 | static int decide_next(const struct bisect_terms *terms, |
296 | const char *current_term, int missing_good, | |
297 | int missing_bad) | |
129a6cf3 | 298 | { |
129a6cf3 | 299 | if (!missing_good && !missing_bad) |
bfacfce7 TT |
300 | return 0; |
301 | if (!current_term) | |
302 | return -1; | |
129a6cf3 PB |
303 | |
304 | if (missing_good && !missing_bad && | |
305 | !strcmp(current_term, terms->term_good)) { | |
306 | char *yesno; | |
307 | /* | |
308 | * have bad (or new) but not good (or old). We could bisect | |
309 | * although this is less optimum. | |
310 | */ | |
311 | warning(_("bisecting only with a %s commit"), terms->term_bad); | |
312 | if (!isatty(0)) | |
bfacfce7 | 313 | return 0; |
129a6cf3 PB |
314 | /* |
315 | * TRANSLATORS: Make sure to include [Y] and [n] in your | |
316 | * translation. The program will only accept English input | |
317 | * at this point. | |
318 | */ | |
319 | yesno = git_prompt(_("Are you sure [Y/n]? "), PROMPT_ECHO); | |
320 | if (starts_with(yesno, "N") || starts_with(yesno, "n")) | |
bfacfce7 TT |
321 | return -1; |
322 | return 0; | |
129a6cf3 PB |
323 | } |
324 | ||
bfacfce7 TT |
325 | if (!is_empty_or_missing_file(git_path_bisect_start())) |
326 | return error(_(need_bad_and_good_revision_warning), | |
327 | vocab_bad, vocab_good, vocab_bad, vocab_good); | |
328 | else | |
329 | return error(_(need_bisect_start_warning), | |
330 | vocab_good, vocab_bad, vocab_good, vocab_bad); | |
331 | } | |
332 | ||
333 | static int bisect_next_check(const struct bisect_terms *terms, | |
334 | const char *current_term) | |
335 | { | |
336 | int missing_good = 1, missing_bad = 1; | |
337 | char *bad_ref = xstrfmt("refs/bisect/%s", terms->term_bad); | |
338 | char *good_glob = xstrfmt("%s-*", terms->term_good); | |
339 | ||
340 | if (ref_exists(bad_ref)) | |
341 | missing_bad = 0; | |
342 | ||
343 | for_each_glob_ref_in(mark_good, good_glob, "refs/bisect/", | |
344 | (void *) &missing_good); | |
345 | ||
346 | free(good_glob); | |
347 | free(bad_ref); | |
348 | ||
349 | return decide_next(terms, current_term, missing_good, missing_bad); | |
129a6cf3 PB |
350 | } |
351 | ||
450ebb73 PB |
352 | static int get_terms(struct bisect_terms *terms) |
353 | { | |
354 | struct strbuf str = STRBUF_INIT; | |
355 | FILE *fp = NULL; | |
356 | int res = 0; | |
357 | ||
358 | fp = fopen(git_path_bisect_terms(), "r"); | |
359 | if (!fp) { | |
360 | res = -1; | |
361 | goto finish; | |
362 | } | |
363 | ||
364 | free_terms(terms); | |
365 | strbuf_getline_lf(&str, fp); | |
366 | terms->term_bad = strbuf_detach(&str, NULL); | |
367 | strbuf_getline_lf(&str, fp); | |
368 | terms->term_good = strbuf_detach(&str, NULL); | |
369 | ||
370 | finish: | |
371 | if (fp) | |
372 | fclose(fp); | |
373 | strbuf_release(&str); | |
374 | return res; | |
375 | } | |
376 | ||
377 | static int bisect_terms(struct bisect_terms *terms, const char *option) | |
378 | { | |
379 | if (get_terms(terms)) | |
380 | return error(_("no terms defined")); | |
381 | ||
382 | if (option == NULL) { | |
383 | printf(_("Your current terms are %s for the old state\n" | |
384 | "and %s for the new state.\n"), | |
385 | terms->term_good, terms->term_bad); | |
386 | return 0; | |
387 | } | |
388 | if (one_of(option, "--term-good", "--term-old", NULL)) | |
389 | printf("%s\n", terms->term_good); | |
390 | else if (one_of(option, "--term-bad", "--term-new", NULL)) | |
391 | printf("%s\n", terms->term_bad); | |
392 | else | |
393 | return error(_("invalid argument %s for 'git bisect terms'.\n" | |
394 | "Supported options are: " | |
395 | "--term-good|--term-old and " | |
396 | "--term-bad|--term-new."), option); | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
06f5608c PB |
401 | static int bisect_append_log_quoted(const char **argv) |
402 | { | |
292731c4 | 403 | int res = 0; |
06f5608c PB |
404 | FILE *fp = fopen(git_path_bisect_log(), "a"); |
405 | struct strbuf orig_args = STRBUF_INIT; | |
406 | ||
407 | if (!fp) | |
408 | return -1; | |
409 | ||
410 | if (fprintf(fp, "git bisect start") < 1) { | |
292731c4 | 411 | res = -1; |
06f5608c PB |
412 | goto finish; |
413 | } | |
414 | ||
415 | sq_quote_argv(&orig_args, argv); | |
416 | if (fprintf(fp, "%s\n", orig_args.buf) < 1) | |
292731c4 | 417 | res = -1; |
06f5608c PB |
418 | |
419 | finish: | |
420 | fclose(fp); | |
421 | strbuf_release(&orig_args); | |
292731c4 | 422 | return res; |
06f5608c PB |
423 | } |
424 | ||
be5fe200 | 425 | static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) |
06f5608c | 426 | { |
be5fe200 | 427 | int no_checkout = 0; |
e8861ffc | 428 | int first_parent_only = 0; |
06f5608c | 429 | int i, has_double_dash = 0, must_write_terms = 0, bad_seen = 0; |
292731c4 | 430 | int flags, pathspec_pos, res = 0; |
06f5608c PB |
431 | struct string_list revs = STRING_LIST_INIT_DUP; |
432 | struct string_list states = STRING_LIST_INIT_DUP; | |
433 | struct strbuf start_head = STRBUF_INIT; | |
434 | struct strbuf bisect_names = STRBUF_INIT; | |
435 | struct object_id head_oid; | |
436 | struct object_id oid; | |
437 | const char *head; | |
438 | ||
439 | if (is_bare_repository()) | |
440 | no_checkout = 1; | |
441 | ||
442 | /* | |
443 | * Check for one bad and then some good revisions | |
444 | */ | |
445 | for (i = 0; i < argc; i++) { | |
446 | if (!strcmp(argv[i], "--")) { | |
447 | has_double_dash = 1; | |
448 | break; | |
449 | } | |
450 | } | |
451 | ||
452 | for (i = 0; i < argc; i++) { | |
453 | const char *arg = argv[i]; | |
454 | if (!strcmp(argv[i], "--")) { | |
455 | break; | |
456 | } else if (!strcmp(arg, "--no-checkout")) { | |
457 | no_checkout = 1; | |
e8861ffc AL |
458 | } else if (!strcmp(arg, "--first-parent")) { |
459 | first_parent_only = 1; | |
06f5608c PB |
460 | } else if (!strcmp(arg, "--term-good") || |
461 | !strcmp(arg, "--term-old")) { | |
4d9005ff CMAB |
462 | i++; |
463 | if (argc <= i) | |
464 | return error(_("'' is not a valid term")); | |
06f5608c PB |
465 | must_write_terms = 1; |
466 | free((void *) terms->term_good); | |
4d9005ff | 467 | terms->term_good = xstrdup(argv[i]); |
06f5608c PB |
468 | } else if (skip_prefix(arg, "--term-good=", &arg) || |
469 | skip_prefix(arg, "--term-old=", &arg)) { | |
470 | must_write_terms = 1; | |
471 | free((void *) terms->term_good); | |
472 | terms->term_good = xstrdup(arg); | |
473 | } else if (!strcmp(arg, "--term-bad") || | |
474 | !strcmp(arg, "--term-new")) { | |
4d9005ff CMAB |
475 | i++; |
476 | if (argc <= i) | |
477 | return error(_("'' is not a valid term")); | |
06f5608c PB |
478 | must_write_terms = 1; |
479 | free((void *) terms->term_bad); | |
4d9005ff | 480 | terms->term_bad = xstrdup(argv[i]); |
06f5608c PB |
481 | } else if (skip_prefix(arg, "--term-bad=", &arg) || |
482 | skip_prefix(arg, "--term-new=", &arg)) { | |
483 | must_write_terms = 1; | |
484 | free((void *) terms->term_bad); | |
485 | terms->term_bad = xstrdup(arg); | |
4d9005ff | 486 | } else if (starts_with(arg, "--")) { |
06f5608c PB |
487 | return error(_("unrecognized option: '%s'"), arg); |
488 | } else { | |
489 | char *commit_id = xstrfmt("%s^{commit}", arg); | |
490 | if (get_oid(commit_id, &oid) && has_double_dash) | |
491 | die(_("'%s' does not appear to be a valid " | |
492 | "revision"), arg); | |
493 | ||
494 | string_list_append(&revs, oid_to_hex(&oid)); | |
495 | free(commit_id); | |
496 | } | |
497 | } | |
498 | pathspec_pos = i; | |
499 | ||
500 | /* | |
501 | * The user ran "git bisect start <sha1> <sha1>", hence did not | |
502 | * explicitly specify the terms, but we are already starting to | |
503 | * set references named with the default terms, and won't be able | |
504 | * to change afterwards. | |
505 | */ | |
506 | if (revs.nr) | |
507 | must_write_terms = 1; | |
508 | for (i = 0; i < revs.nr; i++) { | |
509 | if (bad_seen) { | |
510 | string_list_append(&states, terms->term_good); | |
511 | } else { | |
512 | bad_seen = 1; | |
513 | string_list_append(&states, terms->term_bad); | |
514 | } | |
515 | } | |
516 | ||
517 | /* | |
518 | * Verify HEAD | |
519 | */ | |
520 | head = resolve_ref_unsafe("HEAD", 0, &head_oid, &flags); | |
521 | if (!head) | |
522 | if (get_oid("HEAD", &head_oid)) | |
523 | return error(_("bad HEAD - I need a HEAD")); | |
524 | ||
525 | /* | |
526 | * Check if we are bisecting | |
527 | */ | |
528 | if (!is_empty_or_missing_file(git_path_bisect_start())) { | |
529 | /* Reset to the rev from where we started */ | |
530 | strbuf_read_file(&start_head, git_path_bisect_start(), 0); | |
531 | strbuf_trim(&start_head); | |
532 | if (!no_checkout) { | |
533 | struct argv_array argv = ARGV_ARRAY_INIT; | |
534 | ||
535 | argv_array_pushl(&argv, "checkout", start_head.buf, | |
536 | "--", NULL); | |
537 | if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) { | |
292731c4 | 538 | res = error(_("checking out '%s' failed." |
06f5608c PB |
539 | " Try 'git bisect start " |
540 | "<valid-branch>'."), | |
541 | start_head.buf); | |
542 | goto finish; | |
543 | } | |
544 | } | |
545 | } else { | |
546 | /* Get the rev from where we start. */ | |
547 | if (!get_oid(head, &head_oid) && | |
548 | !starts_with(head, "refs/heads/")) { | |
549 | strbuf_reset(&start_head); | |
550 | strbuf_addstr(&start_head, oid_to_hex(&head_oid)); | |
551 | } else if (!get_oid(head, &head_oid) && | |
552 | skip_prefix(head, "refs/heads/", &head)) { | |
553 | /* | |
554 | * This error message should only be triggered by | |
555 | * cogito usage, and cogito users should understand | |
556 | * it relates to cg-seek. | |
557 | */ | |
558 | if (!is_empty_or_missing_file(git_path_head_name())) | |
559 | return error(_("won't bisect on cg-seek'ed tree")); | |
560 | strbuf_addstr(&start_head, head); | |
561 | } else { | |
562 | return error(_("bad HEAD - strange symbolic ref")); | |
563 | } | |
564 | } | |
565 | ||
566 | /* | |
567 | * Get rid of any old bisect state. | |
568 | */ | |
569 | if (bisect_clean_state()) | |
570 | return -1; | |
571 | ||
572 | /* | |
573 | * In case of mistaken revs or checkout error, or signals received, | |
574 | * "bisect_auto_next" below may exit or misbehave. | |
575 | * We have to trap this to be able to clean up using | |
576 | * "bisect_clean_state". | |
577 | */ | |
578 | ||
579 | /* | |
580 | * Write new start state | |
581 | */ | |
582 | write_file(git_path_bisect_start(), "%s\n", start_head.buf); | |
583 | ||
e8861ffc AL |
584 | if (first_parent_only) |
585 | write_file(git_path_bisect_first_parent(), "\n"); | |
586 | ||
06f5608c | 587 | if (no_checkout) { |
7877ac3d | 588 | if (get_oid(start_head.buf, &oid) < 0) { |
292731c4 | 589 | res = error(_("invalid ref: '%s'"), start_head.buf); |
7877ac3d JS |
590 | goto finish; |
591 | } | |
06f5608c PB |
592 | if (update_ref(NULL, "BISECT_HEAD", &oid, NULL, 0, |
593 | UPDATE_REFS_MSG_ON_ERR)) { | |
292731c4 | 594 | res = -1; |
06f5608c PB |
595 | goto finish; |
596 | } | |
597 | } | |
598 | ||
599 | if (pathspec_pos < argc - 1) | |
600 | sq_quote_argv(&bisect_names, argv + pathspec_pos); | |
601 | write_file(git_path_bisect_names(), "%s\n", bisect_names.buf); | |
602 | ||
603 | for (i = 0; i < states.nr; i++) | |
604 | if (bisect_write(states.items[i].string, | |
605 | revs.items[i].string, terms, 1)) { | |
292731c4 | 606 | res = -1; |
06f5608c PB |
607 | goto finish; |
608 | } | |
609 | ||
610 | if (must_write_terms && write_terms(terms->term_bad, | |
611 | terms->term_good)) { | |
292731c4 | 612 | res = -1; |
06f5608c PB |
613 | goto finish; |
614 | } | |
615 | ||
292731c4 TT |
616 | res = bisect_append_log_quoted(argv); |
617 | if (res) | |
618 | res = -1; | |
06f5608c PB |
619 | |
620 | finish: | |
621 | string_list_clear(&revs, 0); | |
622 | string_list_clear(&states, 0); | |
623 | strbuf_release(&start_head); | |
624 | strbuf_release(&bisect_names); | |
292731c4 | 625 | return res; |
06f5608c PB |
626 | } |
627 | ||
1bf072e3 CC |
628 | int cmd_bisect__helper(int argc, const char **argv, const char *prefix) |
629 | { | |
4ba1e5c4 PB |
630 | enum { |
631 | NEXT_ALL = 1, | |
fb71a329 | 632 | WRITE_TERMS, |
b903674b | 633 | BISECT_CLEAN_STATE, |
5e82c3dd | 634 | CHECK_EXPECTED_REVS, |
0f30233a | 635 | BISECT_RESET, |
4fbdbd5b | 636 | BISECT_WRITE, |
129a6cf3 | 637 | CHECK_AND_SET_TERMS, |
450ebb73 | 638 | BISECT_NEXT_CHECK, |
06f5608c PB |
639 | BISECT_TERMS, |
640 | BISECT_START | |
4ba1e5c4 | 641 | } cmdmode = 0; |
be5fe200 | 642 | int res = 0, nolog = 0; |
1bf072e3 | 643 | struct option options[] = { |
9e1c84df PB |
644 | OPT_CMDMODE(0, "next-all", &cmdmode, |
645 | N_("perform 'git bisect next'"), NEXT_ALL), | |
ecb3f373 PB |
646 | OPT_CMDMODE(0, "write-terms", &cmdmode, |
647 | N_("write the terms to .git/BISECT_TERMS"), WRITE_TERMS), | |
fb71a329 PB |
648 | OPT_CMDMODE(0, "bisect-clean-state", &cmdmode, |
649 | N_("cleanup the bisection state"), BISECT_CLEAN_STATE), | |
b903674b PB |
650 | OPT_CMDMODE(0, "check-expected-revs", &cmdmode, |
651 | N_("check for expected revs"), CHECK_EXPECTED_REVS), | |
5e82c3dd PB |
652 | OPT_CMDMODE(0, "bisect-reset", &cmdmode, |
653 | N_("reset the bisection state"), BISECT_RESET), | |
0f30233a PB |
654 | OPT_CMDMODE(0, "bisect-write", &cmdmode, |
655 | N_("write out the bisection state in BISECT_LOG"), BISECT_WRITE), | |
4fbdbd5b PB |
656 | OPT_CMDMODE(0, "check-and-set-terms", &cmdmode, |
657 | N_("check and set terms in a bisection state"), CHECK_AND_SET_TERMS), | |
129a6cf3 PB |
658 | OPT_CMDMODE(0, "bisect-next-check", &cmdmode, |
659 | N_("check whether bad or good terms exist"), BISECT_NEXT_CHECK), | |
450ebb73 PB |
660 | OPT_CMDMODE(0, "bisect-terms", &cmdmode, |
661 | N_("print out the bisect terms"), BISECT_TERMS), | |
06f5608c PB |
662 | OPT_CMDMODE(0, "bisect-start", &cmdmode, |
663 | N_("start the bisect session"), BISECT_START), | |
0f30233a | 664 | OPT_BOOL(0, "no-log", &nolog, |
32ceace3 | 665 | N_("no log for BISECT_WRITE")), |
1bf072e3 CC |
666 | OPT_END() |
667 | }; | |
0f30233a | 668 | struct bisect_terms terms = { .term_good = NULL, .term_bad = NULL }; |
1bf072e3 | 669 | |
37782920 | 670 | argc = parse_options(argc, argv, prefix, options, |
06f5608c PB |
671 | git_bisect_helper_usage, |
672 | PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_UNKNOWN); | |
1bf072e3 | 673 | |
9e1c84df | 674 | if (!cmdmode) |
1bf072e3 CC |
675 | usage_with_options(git_bisect_helper_usage, options); |
676 | ||
9e1c84df PB |
677 | switch (cmdmode) { |
678 | case NEXT_ALL: | |
be5fe200 | 679 | res = bisect_next_all(the_repository, prefix); |
45b63708 | 680 | break; |
ecb3f373 | 681 | case WRITE_TERMS: |
4ba1e5c4 | 682 | if (argc != 2) |
ecb3f373 PB |
683 | return error(_("--write-terms requires two arguments")); |
684 | return write_terms(argv[0], argv[1]); | |
fb71a329 PB |
685 | case BISECT_CLEAN_STATE: |
686 | if (argc != 0) | |
687 | return error(_("--bisect-clean-state requires no arguments")); | |
688 | return bisect_clean_state(); | |
b903674b PB |
689 | case CHECK_EXPECTED_REVS: |
690 | check_expected_revs(argv, argc); | |
691 | return 0; | |
5e82c3dd PB |
692 | case BISECT_RESET: |
693 | if (argc > 1) | |
694 | return error(_("--bisect-reset requires either no argument or a commit")); | |
695 | return !!bisect_reset(argc ? argv[0] : NULL); | |
0f30233a PB |
696 | case BISECT_WRITE: |
697 | if (argc != 4 && argc != 5) | |
698 | return error(_("--bisect-write requires either 4 or 5 arguments")); | |
699 | set_terms(&terms, argv[3], argv[2]); | |
700 | res = bisect_write(argv[0], argv[1], &terms, nolog); | |
701 | break; | |
4fbdbd5b PB |
702 | case CHECK_AND_SET_TERMS: |
703 | if (argc != 3) | |
704 | return error(_("--check-and-set-terms requires 3 arguments")); | |
705 | set_terms(&terms, argv[2], argv[1]); | |
706 | res = check_and_set_terms(&terms, argv[0]); | |
707 | break; | |
129a6cf3 PB |
708 | case BISECT_NEXT_CHECK: |
709 | if (argc != 2 && argc != 3) | |
710 | return error(_("--bisect-next-check requires 2 or 3 arguments")); | |
711 | set_terms(&terms, argv[1], argv[0]); | |
712 | res = bisect_next_check(&terms, argc == 3 ? argv[2] : NULL); | |
713 | break; | |
450ebb73 PB |
714 | case BISECT_TERMS: |
715 | if (argc > 1) | |
716 | return error(_("--bisect-terms requires 0 or 1 argument")); | |
717 | res = bisect_terms(&terms, argc == 1 ? argv[0] : NULL); | |
718 | break; | |
06f5608c PB |
719 | case BISECT_START: |
720 | set_terms(&terms, "bad", "good"); | |
be5fe200 | 721 | res = bisect_start(&terms, argv, argc); |
06f5608c | 722 | break; |
9e1c84df PB |
723 | default: |
724 | return error("BUG: unknown subcommand '%d'", cmdmode); | |
725 | } | |
0f30233a | 726 | free_terms(&terms); |
45b63708 PB |
727 | |
728 | /* | |
729 | * Handle early success | |
730 | * From check_merge_bases > check_good_are_ancestors_of_bad > bisect_next_all | |
731 | */ | |
732 | if (res == BISECT_INTERNAL_SUCCESS_MERGE_BASE) | |
733 | res = BISECT_OK; | |
734 | ||
7613ec59 | 735 | return abs(res); |
1bf072e3 | 736 | } |