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commit-reach(paint_down_to_common): plug two memory leaks
[git.git] / builtin / stash.c
blob7fb355bff0a628d1d7a1a08646175ac33d8fe9d7
1 #define USE_THE_INDEX_VARIABLE
2 #include "builtin.h"
3 #include "abspath.h"
4 #include "config.h"
5 #include "environment.h"
6 #include "gettext.h"
7 #include "hash.h"
8 #include "hex.h"
9 #include "object-name.h"
10 #include "parse-options.h"
11 #include "refs.h"
12 #include "lockfile.h"
13 #include "cache-tree.h"
14 #include "unpack-trees.h"
15 #include "merge-recursive.h"
16 #include "merge-ort-wrappers.h"
17 #include "strvec.h"
18 #include "run-command.h"
19 #include "dir.h"
20 #include "entry.h"
21 #include "preload-index.h"
22 #include "read-cache.h"
23 #include "rerere.h"
24 #include "revision.h"
25 #include "setup.h"
26 #include "sparse-index.h"
27 #include "log-tree.h"
28 #include "diffcore.h"
29 #include "reflog.h"
30 #include "add-interactive.h"
31
32 #define INCLUDE_ALL_FILES 2
33
34 #define BUILTIN_STASH_LIST_USAGE \
35 N_("git stash list [<log-options>]")
36 #define BUILTIN_STASH_SHOW_USAGE \
37 N_("git stash show [-u | --include-untracked | --only-untracked] [<diff-options>] [<stash>]")
38 #define BUILTIN_STASH_DROP_USAGE \
39 N_("git stash drop [-q | --quiet] [<stash>]")
40 #define BUILTIN_STASH_POP_USAGE \
41 N_("git stash pop [--index] [-q | --quiet] [<stash>]")
42 #define BUILTIN_STASH_APPLY_USAGE \
43 N_("git stash apply [--index] [-q | --quiet] [<stash>]")
44 #define BUILTIN_STASH_BRANCH_USAGE \
45 N_("git stash branch <branchname> [<stash>]")
46 #define BUILTIN_STASH_STORE_USAGE \
47 N_("git stash store [(-m | --message) <message>] [-q | --quiet] <commit>")
48 #define BUILTIN_STASH_PUSH_USAGE \
49 N_("git stash [push [-p | --patch] [-S | --staged] [-k | --[no-]keep-index] [-q | --quiet]\n" \
50 " [-u | --include-untracked] [-a | --all] [(-m | --message) <message>]\n" \
51 " [--pathspec-from-file=<file> [--pathspec-file-nul]]\n" \
52 " [--] [<pathspec>...]]")
53 #define BUILTIN_STASH_SAVE_USAGE \
54 N_("git stash save [-p | --patch] [-S | --staged] [-k | --[no-]keep-index] [-q | --quiet]\n" \
55 " [-u | --include-untracked] [-a | --all] [<message>]")
56 #define BUILTIN_STASH_CREATE_USAGE \
57 N_("git stash create [<message>]")
58 #define BUILTIN_STASH_CLEAR_USAGE \
59 "git stash clear"
60
61 static const char * const git_stash_usage[] = {
62 BUILTIN_STASH_LIST_USAGE,
63 BUILTIN_STASH_SHOW_USAGE,
64 BUILTIN_STASH_DROP_USAGE,
65 BUILTIN_STASH_POP_USAGE,
66 BUILTIN_STASH_APPLY_USAGE,
67 BUILTIN_STASH_BRANCH_USAGE,
68 BUILTIN_STASH_PUSH_USAGE,
69 BUILTIN_STASH_SAVE_USAGE,
70 BUILTIN_STASH_CLEAR_USAGE,
71 BUILTIN_STASH_CREATE_USAGE,
72 BUILTIN_STASH_STORE_USAGE,
73 NULL
74 };
75
76 static const char * const git_stash_list_usage[] = {
77 BUILTIN_STASH_LIST_USAGE,
78 NULL
79 };
80
81 static const char * const git_stash_show_usage[] = {
82 BUILTIN_STASH_SHOW_USAGE,
83 NULL
84 };
85
86 static const char * const git_stash_drop_usage[] = {
87 BUILTIN_STASH_DROP_USAGE,
88 NULL
89 };
90
91 static const char * const git_stash_pop_usage[] = {
92 BUILTIN_STASH_POP_USAGE,
93 NULL
94 };
95
96 static const char * const git_stash_apply_usage[] = {
97 BUILTIN_STASH_APPLY_USAGE,
98 NULL
99 };
100
101 static const char * const git_stash_branch_usage[] = {
102 BUILTIN_STASH_BRANCH_USAGE,
103 NULL
104 };
105
106 static const char * const git_stash_clear_usage[] = {
107 BUILTIN_STASH_CLEAR_USAGE,
108 NULL
109 };
110
111 static const char * const git_stash_store_usage[] = {
112 BUILTIN_STASH_STORE_USAGE,
113 NULL
114 };
115
116 static const char * const git_stash_push_usage[] = {
117 BUILTIN_STASH_PUSH_USAGE,
118 NULL
119 };
120
121 static const char * const git_stash_save_usage[] = {
122 BUILTIN_STASH_SAVE_USAGE,
123 NULL
124 };
125
126 static const char ref_stash[] = "refs/stash";
127 static struct strbuf stash_index_path = STRBUF_INIT;
128
129 /*
130 * w_commit is set to the commit containing the working tree
131 * b_commit is set to the base commit
132 * i_commit is set to the commit containing the index tree
133 * u_commit is set to the commit containing the untracked files tree
134 * w_tree is set to the working tree
135 * b_tree is set to the base tree
136 * i_tree is set to the index tree
137 * u_tree is set to the untracked files tree
138 */
139 struct stash_info {
140 struct object_id w_commit;
141 struct object_id b_commit;
142 struct object_id i_commit;
143 struct object_id u_commit;
144 struct object_id w_tree;
145 struct object_id b_tree;
146 struct object_id i_tree;
147 struct object_id u_tree;
148 struct strbuf revision;
149 int is_stash_ref;
150 int has_u;
151 };
152
153 #define STASH_INFO_INIT { \
154 .revision = STRBUF_INIT, \
155 }
156
157 static void free_stash_info(struct stash_info *info)
158 {
159 strbuf_release(&info->revision);
160 }
161
162 static void assert_stash_like(struct stash_info *info, const char *revision)
163 {
164 if (get_oidf(&info->b_commit, "%s^1", revision) ||
165 get_oidf(&info->w_tree, "%s:", revision) ||
166 get_oidf(&info->b_tree, "%s^1:", revision) ||
167 get_oidf(&info->i_tree, "%s^2:", revision))
168 die(_("'%s' is not a stash-like commit"), revision);
169 }
170
171 static int get_stash_info(struct stash_info *info, int argc, const char **argv)
172 {
173 int ret;
174 char *end_of_rev;
175 char *expanded_ref;
176 const char *revision;
177 const char *commit = NULL;
178 struct object_id dummy;
179 struct strbuf symbolic = STRBUF_INIT;
180
181 if (argc > 1) {
182 int i;
183 struct strbuf refs_msg = STRBUF_INIT;
184
185 for (i = 0; i < argc; i++)
186 strbuf_addf(&refs_msg, " '%s'", argv[i]);
187
188 fprintf_ln(stderr, _("Too many revisions specified:%s"),
189 refs_msg.buf);
190 strbuf_release(&refs_msg);
191
192 return -1;
193 }
194
195 if (argc == 1)
196 commit = argv[0];
197
198 if (!commit) {
199 if (!ref_exists(ref_stash)) {
200 fprintf_ln(stderr, _("No stash entries found."));
201 return -1;
202 }
203
204 strbuf_addf(&info->revision, "%s@{0}", ref_stash);
205 } else if (strspn(commit, "0123456789") == strlen(commit)) {
206 strbuf_addf(&info->revision, "%s@{%s}", ref_stash, commit);
207 } else {
208 strbuf_addstr(&info->revision, commit);
209 }
210
211 revision = info->revision.buf;
212
213 if (repo_get_oid(the_repository, revision, &info->w_commit))
214 return error(_("%s is not a valid reference"), revision);
215
216 assert_stash_like(info, revision);
217
218 info->has_u = !get_oidf(&info->u_tree, "%s^3:", revision);
219
220 end_of_rev = strchrnul(revision, '@');
221 strbuf_add(&symbolic, revision, end_of_rev - revision);
222
223 ret = repo_dwim_ref(the_repository, symbolic.buf, symbolic.len,
224 &dummy, &expanded_ref, 0);
225 strbuf_release(&symbolic);
226 switch (ret) {
227 case 0: /* Not found, but valid ref */
228 info->is_stash_ref = 0;
229 break;
230 case 1:
231 info->is_stash_ref = !strcmp(expanded_ref, ref_stash);
232 break;
233 default: /* Invalid or ambiguous */
234 break;
235 }
236
237 free(expanded_ref);
238 return !(ret == 0 || ret == 1);
239 }
240
241 static int do_clear_stash(void)
242 {
243 struct object_id obj;
244 if (repo_get_oid(the_repository, ref_stash, &obj))
245 return 0;
246
247 return delete_ref(NULL, ref_stash, &obj, 0);
248 }
249
250 static int clear_stash(int argc, const char **argv, const char *prefix)
251 {
252 struct option options[] = {
253 OPT_END()
254 };
255
256 argc = parse_options(argc, argv, prefix, options,
257 git_stash_clear_usage,
258 PARSE_OPT_STOP_AT_NON_OPTION);
259
260 if (argc)
261 return error(_("git stash clear with arguments is "
262 "unimplemented"));
263
264 return do_clear_stash();
265 }
266
267 static int reset_tree(struct object_id *i_tree, int update, int reset)
268 {
269 int nr_trees = 1;
270 struct unpack_trees_options opts;
271 struct tree_desc t[MAX_UNPACK_TREES];
272 struct tree *tree;
273 struct lock_file lock_file = LOCK_INIT;
274
275 repo_read_index_preload(the_repository, NULL, 0);
276 if (refresh_index(&the_index, REFRESH_QUIET, NULL, NULL, NULL))
277 return -1;
278
279 repo_hold_locked_index(the_repository, &lock_file, LOCK_DIE_ON_ERROR);
280
281 memset(&opts, 0, sizeof(opts));
282
283 tree = parse_tree_indirect(i_tree);
284 if (parse_tree(tree))
285 return -1;
286
287 init_tree_desc(t, tree->buffer, tree->size);
288
289 opts.head_idx = 1;
290 opts.src_index = &the_index;
291 opts.dst_index = &the_index;
292 opts.merge = 1;
293 opts.reset = reset ? UNPACK_RESET_PROTECT_UNTRACKED : 0;
294 opts.update = update;
295 if (update)
296 opts.preserve_ignored = 0; /* FIXME: !overwrite_ignore */
297 opts.fn = oneway_merge;
298
299 if (unpack_trees(nr_trees, t, &opts))
300 return -1;
301
302 if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
303 return error(_("unable to write new index file"));
304
305 return 0;
306 }
307
308 static int diff_tree_binary(struct strbuf *out, struct object_id *w_commit)
309 {
310 struct child_process cp = CHILD_PROCESS_INIT;
311 const char *w_commit_hex = oid_to_hex(w_commit);
312
313 /*
314 * Diff-tree would not be very hard to replace with a native function,
315 * however it should be done together with apply_cached.
316 */
317 cp.git_cmd = 1;
318 strvec_pushl(&cp.args, "diff-tree", "--binary", NULL);
319 strvec_pushf(&cp.args, "%s^2^..%s^2", w_commit_hex, w_commit_hex);
320
321 return pipe_command(&cp, NULL, 0, out, 0, NULL, 0);
322 }
323
324 static int apply_cached(struct strbuf *out)
325 {
326 struct child_process cp = CHILD_PROCESS_INIT;
327
328 /*
329 * Apply currently only reads either from stdin or a file, thus
330 * apply_all_patches would have to be updated to optionally take a
331 * buffer.
332 */
333 cp.git_cmd = 1;
334 strvec_pushl(&cp.args, "apply", "--cached", NULL);
335 return pipe_command(&cp, out->buf, out->len, NULL, 0, NULL, 0);
336 }
337
338 static int reset_head(void)
339 {
340 struct child_process cp = CHILD_PROCESS_INIT;
341
342 /*
343 * Reset is overall quite simple, however there is no current public
344 * API for resetting.
345 */
346 cp.git_cmd = 1;
347 strvec_pushl(&cp.args, "reset", "--quiet", "--refresh", NULL);
348
349 return run_command(&cp);
350 }
351
352 static int is_path_a_directory(const char *path)
353 {
354 /*
355 * This function differs from abspath.c:is_directory() in that
356 * here we use lstat() instead of stat(); we do not want to
357 * follow symbolic links here.
358 */
359 struct stat st;
360 return (!lstat(path, &st) && S_ISDIR(st.st_mode));
361 }
362
363 static void add_diff_to_buf(struct diff_queue_struct *q,
364 struct diff_options *options UNUSED,
365 void *data)
366 {
367 int i;
368
369 for (i = 0; i < q->nr; i++) {
370 if (is_path_a_directory(q->queue[i]->one->path))
371 continue;
372
373 strbuf_addstr(data, q->queue[i]->one->path);
374
375 /* NUL-terminate: will be fed to update-index -z */
376 strbuf_addch(data, '\0');
377 }
378 }
379
380 static int restore_untracked(struct object_id *u_tree)
381 {
382 int res;
383 struct child_process cp = CHILD_PROCESS_INIT;
384
385 /*
386 * We need to run restore files from a given index, but without
387 * affecting the current index, so we use GIT_INDEX_FILE with
388 * run_command to fork processes that will not interfere.
389 */
390 cp.git_cmd = 1;
391 strvec_push(&cp.args, "read-tree");
392 strvec_push(&cp.args, oid_to_hex(u_tree));
393 strvec_pushf(&cp.env, "GIT_INDEX_FILE=%s",
394 stash_index_path.buf);
395 if (run_command(&cp)) {
396 remove_path(stash_index_path.buf);
397 return -1;
398 }
399
400 child_process_init(&cp);
401 cp.git_cmd = 1;
402 strvec_pushl(&cp.args, "checkout-index", "--all", NULL);
403 strvec_pushf(&cp.env, "GIT_INDEX_FILE=%s",
404 stash_index_path.buf);
405
406 res = run_command(&cp);
407 remove_path(stash_index_path.buf);
408 return res;
409 }
410
411 static void unstage_changes_unless_new(struct object_id *orig_tree)
412 {
413 /*
414 * When we enter this function, there has been a clean merge of
415 * relevant trees, and the merge logic always stages whatever merges
416 * cleanly. We want to unstage those changes, unless it corresponds
417 * to a file that didn't exist as of orig_tree.
418 *
419 * However, if any SKIP_WORKTREE path is modified relative to
420 * orig_tree, then we want to clear the SKIP_WORKTREE bit and write
421 * it to the worktree before unstaging.
422 */
423
424 struct checkout state = CHECKOUT_INIT;
425 struct diff_options diff_opts;
426 struct lock_file lock = LOCK_INIT;
427 int i;
428
429 /* If any entries have skip_worktree set, we'll have to check 'em out */
430 state.force = 1;
431 state.quiet = 1;
432 state.refresh_cache = 1;
433 state.istate = &the_index;
434
435 /*
436 * Step 1: get a difference between orig_tree (which corresponding
437 * to the index before a merge was run) and the current index
438 * (reflecting the changes brought in by the merge).
439 */
440 repo_diff_setup(the_repository, &diff_opts);
441 diff_opts.flags.recursive = 1;
442 diff_opts.detect_rename = 0;
443 diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
444 diff_setup_done(&diff_opts);
445
446 do_diff_cache(orig_tree, &diff_opts);
447 diffcore_std(&diff_opts);
448
449 /* Iterate over the paths that changed due to the merge... */
450 for (i = 0; i < diff_queued_diff.nr; i++) {
451 struct diff_filepair *p;
452 struct cache_entry *ce;
453 int pos;
454
455 /* Look up the path's position in the current index. */
456 p = diff_queued_diff.queue[i];
457 pos = index_name_pos(&the_index, p->two->path,
458 strlen(p->two->path));
459
460 /*
461 * Step 2: Place changes in the working tree
462 *
463 * Stash is about restoring changes *to the working tree*.
464 * So if the merge successfully got a new version of some
465 * path, but left it out of the working tree, then clear the
466 * SKIP_WORKTREE bit and write it to the working tree.
467 */
468 if (pos >= 0 && ce_skip_worktree(the_index.cache[pos])) {
469 struct stat st;
470
471 ce = the_index.cache[pos];
472 if (!lstat(ce->name, &st)) {
473 /* Conflicting path present; relocate it */
474 struct strbuf new_path = STRBUF_INIT;
475 int fd;
476
477 strbuf_addf(&new_path,
478 "%s.stash.XXXXXX", ce->name);
479 fd = xmkstemp(new_path.buf);
480 close(fd);
481 printf(_("WARNING: Untracked file in way of "
482 "tracked file! Renaming\n "
483 " %s -> %s\n"
484 " to make room.\n"),
485 ce->name, new_path.buf);
486 if (rename(ce->name, new_path.buf))
487 die("Failed to move %s to %s\n",
488 ce->name, new_path.buf);
489 strbuf_release(&new_path);
490 }
491 checkout_entry(ce, &state, NULL, NULL);
492 ce->ce_flags &= ~CE_SKIP_WORKTREE;
493 }
494
495 /*
496 * Step 3: "unstage" changes, as long as they are still tracked
497 */
498 if (p->one->oid_valid) {
499 /*
500 * Path existed in orig_tree; restore index entry
501 * from that tree in order to "unstage" the changes.
502 */
503 int option = ADD_CACHE_OK_TO_REPLACE;
504 if (pos < 0)
505 option = ADD_CACHE_OK_TO_ADD;
506
507 ce = make_cache_entry(&the_index,
508 p->one->mode,
509 &p->one->oid,
510 p->one->path,
511 0, 0);
512 add_index_entry(&the_index, ce, option);
513 }
514 }
515 diff_flush(&diff_opts);
516
517 /*
518 * Step 4: write the new index to disk
519 */
520 repo_hold_locked_index(the_repository, &lock, LOCK_DIE_ON_ERROR);
521 if (write_locked_index(&the_index, &lock,
522 COMMIT_LOCK | SKIP_IF_UNCHANGED))
523 die(_("could not write index"));
524 }
525
526 static int do_apply_stash(const char *prefix, struct stash_info *info,
527 int index, int quiet)
528 {
529 int clean, ret;
530 int has_index = index;
531 struct merge_options o;
532 struct object_id c_tree;
533 struct object_id index_tree;
534 struct tree *head, *merge, *merge_base;
535 struct lock_file lock = LOCK_INIT;
536
537 repo_read_index_preload(the_repository, NULL, 0);
538 if (repo_refresh_and_write_index(the_repository, REFRESH_QUIET, 0, 0,
539 NULL, NULL, NULL))
540 return error(_("could not write index"));
541
542 if (write_index_as_tree(&c_tree, &the_index, get_index_file(), 0,
543 NULL))
544 return error(_("cannot apply a stash in the middle of a merge"));
545
546 if (index) {
547 if (oideq(&info->b_tree, &info->i_tree) ||
548 oideq(&c_tree, &info->i_tree)) {
549 has_index = 0;
550 } else {
551 struct strbuf out = STRBUF_INIT;
552
553 if (diff_tree_binary(&out, &info->w_commit)) {
554 strbuf_release(&out);
555 return error(_("could not generate diff %s^!."),
556 oid_to_hex(&info->w_commit));
557 }
558
559 ret = apply_cached(&out);
560 strbuf_release(&out);
561 if (ret)
562 return error(_("conflicts in index. "
563 "Try without --index."));
564
565 discard_index(&the_index);
566 repo_read_index(the_repository);
567 if (write_index_as_tree(&index_tree, &the_index,
568 get_index_file(), 0, NULL))
569 return error(_("could not save index tree"));
570
571 reset_head();
572 discard_index(&the_index);
573 repo_read_index(the_repository);
574 }
575 }
576
577 init_merge_options(&o, the_repository);
578
579 o.branch1 = "Updated upstream";
580 o.branch2 = "Stashed changes";
581 o.ancestor = "Stash base";
582
583 if (oideq(&info->b_tree, &c_tree))
584 o.branch1 = "Version stash was based on";
585
586 if (quiet)
587 o.verbosity = 0;
588
589 if (o.verbosity >= 3)
590 printf_ln(_("Merging %s with %s"), o.branch1, o.branch2);
591
592 head = lookup_tree(o.repo, &c_tree);
593 merge = lookup_tree(o.repo, &info->w_tree);
594 merge_base = lookup_tree(o.repo, &info->b_tree);
595
596 repo_hold_locked_index(o.repo, &lock, LOCK_DIE_ON_ERROR);
597 clean = merge_ort_nonrecursive(&o, head, merge, merge_base);
598
599 /*
600 * If 'clean' >= 0, reverse the value for 'ret' so 'ret' is 0 when the
601 * merge was clean, and nonzero if the merge was unclean or encountered
602 * an error.
603 */
604 ret = clean >= 0 ? !clean : clean;
605
606 if (ret < 0)
607 rollback_lock_file(&lock);
608 else if (write_locked_index(o.repo->index, &lock,
609 COMMIT_LOCK | SKIP_IF_UNCHANGED))
610 ret = error(_("could not write index"));
611
612 if (ret) {
613 repo_rerere(the_repository, 0);
614
615 if (index)
616 fprintf_ln(stderr, _("Index was not unstashed."));
617
618 goto restore_untracked;
619 }
620
621 if (has_index) {
622 if (reset_tree(&index_tree, 0, 0))
623 ret = -1;
624 } else {
625 unstage_changes_unless_new(&c_tree);
626 }
627
628 restore_untracked:
629 if (info->has_u && restore_untracked(&info->u_tree))
630 ret = error(_("could not restore untracked files from stash"));
631
632 if (!quiet) {
633 struct child_process cp = CHILD_PROCESS_INIT;
634
635 /*
636 * Status is quite simple and could be replaced with calls to
637 * wt_status in the future, but it adds complexities which may
638 * require more tests.
639 */
640 cp.git_cmd = 1;
641 cp.dir = prefix;
642 strvec_pushf(&cp.env, GIT_WORK_TREE_ENVIRONMENT"=%s",
643 absolute_path(get_git_work_tree()));
644 strvec_pushf(&cp.env, GIT_DIR_ENVIRONMENT"=%s",
645 absolute_path(get_git_dir()));
646 strvec_push(&cp.args, "status");
647 run_command(&cp);
648 }
649
650 return ret;
651 }
652
653 static int apply_stash(int argc, const char **argv, const char *prefix)
654 {
655 int ret = -1;
656 int quiet = 0;
657 int index = 0;
658 struct stash_info info = STASH_INFO_INIT;
659 struct option options[] = {
660 OPT__QUIET(&quiet, N_("be quiet, only report errors")),
661 OPT_BOOL(0, "index", &index,
662 N_("attempt to recreate the index")),
663 OPT_END()
664 };
665
666 argc = parse_options(argc, argv, prefix, options,
667 git_stash_apply_usage, 0);
668
669 if (get_stash_info(&info, argc, argv))
670 goto cleanup;
671
672 ret = do_apply_stash(prefix, &info, index, quiet);
673 cleanup:
674 free_stash_info(&info);
675 return ret;
676 }
677
678 static int reject_reflog_ent(struct object_id *ooid UNUSED,
679 struct object_id *noid UNUSED,
680 const char *email UNUSED,
681 timestamp_t timestamp UNUSED,
682 int tz UNUSED, const char *message UNUSED,
683 void *cb_data UNUSED)
684 {
685 return 1;
686 }
687
688 static int reflog_is_empty(const char *refname)
689 {
690 return !for_each_reflog_ent(refname, reject_reflog_ent, NULL);
691 }
692
693 static int do_drop_stash(struct stash_info *info, int quiet)
694 {
695 if (!reflog_delete(info->revision.buf,
696 EXPIRE_REFLOGS_REWRITE | EXPIRE_REFLOGS_UPDATE_REF,
697 0)) {
698 if (!quiet)
699 printf_ln(_("Dropped %s (%s)"), info->revision.buf,
700 oid_to_hex(&info->w_commit));
701 } else {
702 return error(_("%s: Could not drop stash entry"),
703 info->revision.buf);
704 }
705
706 if (reflog_is_empty(ref_stash))
707 do_clear_stash();
708
709 return 0;
710 }
711
712 static int get_stash_info_assert(struct stash_info *info, int argc,
713 const char **argv)
714 {
715 int ret = get_stash_info(info, argc, argv);
716
717 if (ret < 0)
718 return ret;
719
720 if (!info->is_stash_ref)
721 return error(_("'%s' is not a stash reference"), info->revision.buf);
722
723 return 0;
724 }
725
726 static int drop_stash(int argc, const char **argv, const char *prefix)
727 {
728 int ret = -1;
729 int quiet = 0;
730 struct stash_info info = STASH_INFO_INIT;
731 struct option options[] = {
732 OPT__QUIET(&quiet, N_("be quiet, only report errors")),
733 OPT_END()
734 };
735
736 argc = parse_options(argc, argv, prefix, options,
737 git_stash_drop_usage, 0);
738
739 if (get_stash_info_assert(&info, argc, argv))
740 goto cleanup;
741
742 ret = do_drop_stash(&info, quiet);
743 cleanup:
744 free_stash_info(&info);
745 return ret;
746 }
747
748 static int pop_stash(int argc, const char **argv, const char *prefix)
749 {
750 int ret = -1;
751 int index = 0;
752 int quiet = 0;
753 struct stash_info info = STASH_INFO_INIT;
754 struct option options[] = {
755 OPT__QUIET(&quiet, N_("be quiet, only report errors")),
756 OPT_BOOL(0, "index", &index,
757 N_("attempt to recreate the index")),
758 OPT_END()
759 };
760
761 argc = parse_options(argc, argv, prefix, options,
762 git_stash_pop_usage, 0);
763
764 if (get_stash_info_assert(&info, argc, argv))
765 goto cleanup;
766
767 if ((ret = do_apply_stash(prefix, &info, index, quiet)))
768 printf_ln(_("The stash entry is kept in case "
769 "you need it again."));
770 else
771 ret = do_drop_stash(&info, quiet);
772
773 cleanup:
774 free_stash_info(&info);
775 return ret;
776 }
777
778 static int branch_stash(int argc, const char **argv, const char *prefix)
779 {
780 int ret = -1;
781 const char *branch = NULL;
782 struct stash_info info = STASH_INFO_INIT;
783 struct child_process cp = CHILD_PROCESS_INIT;
784 struct option options[] = {
785 OPT_END()
786 };
787
788 argc = parse_options(argc, argv, prefix, options,
789 git_stash_branch_usage, 0);
790
791 if (!argc) {
792 fprintf_ln(stderr, _("No branch name specified"));
793 return -1;
794 }
795
796 branch = argv[0];
797
798 if (get_stash_info(&info, argc - 1, argv + 1))
799 goto cleanup;
800
801 cp.git_cmd = 1;
802 strvec_pushl(&cp.args, "checkout", "-b", NULL);
803 strvec_push(&cp.args, branch);
804 strvec_push(&cp.args, oid_to_hex(&info.b_commit));
805 ret = run_command(&cp);
806 if (!ret)
807 ret = do_apply_stash(prefix, &info, 1, 0);
808 if (!ret && info.is_stash_ref)
809 ret = do_drop_stash(&info, 0);
810
811 cleanup:
812 free_stash_info(&info);
813 return ret;
814 }
815
816 static int list_stash(int argc, const char **argv, const char *prefix)
817 {
818 struct child_process cp = CHILD_PROCESS_INIT;
819 struct option options[] = {
820 OPT_END()
821 };
822
823 argc = parse_options(argc, argv, prefix, options,
824 git_stash_list_usage,
825 PARSE_OPT_KEEP_UNKNOWN_OPT);
826
827 if (!ref_exists(ref_stash))
828 return 0;
829
830 cp.git_cmd = 1;
831 strvec_pushl(&cp.args, "log", "--format=%gd: %gs", "-g",
832 "--first-parent", NULL);
833 strvec_pushv(&cp.args, argv);
834 strvec_push(&cp.args, ref_stash);
835 strvec_push(&cp.args, "--");
836 return run_command(&cp);
837 }
838
839 static int show_stat = 1;
840 static int show_patch;
841 static int show_include_untracked;
842
843 static int git_stash_config(const char *var, const char *value,
844 const struct config_context *ctx, void *cb)
845 {
846 if (!strcmp(var, "stash.showstat")) {
847 show_stat = git_config_bool(var, value);
848 return 0;
849 }
850 if (!strcmp(var, "stash.showpatch")) {
851 show_patch = git_config_bool(var, value);
852 return 0;
853 }
854 if (!strcmp(var, "stash.showincludeuntracked")) {
855 show_include_untracked = git_config_bool(var, value);
856 return 0;
857 }
858 return git_diff_basic_config(var, value, ctx, cb);
859 }
860
861 static void diff_include_untracked(const struct stash_info *info, struct diff_options *diff_opt)
862 {
863 const struct object_id *oid[] = { &info->w_commit, &info->u_tree };
864 struct tree *tree[ARRAY_SIZE(oid)];
865 struct tree_desc tree_desc[ARRAY_SIZE(oid)];
866 struct unpack_trees_options unpack_tree_opt = { 0 };
867 int i;
868
869 for (i = 0; i < ARRAY_SIZE(oid); i++) {
870 tree[i] = parse_tree_indirect(oid[i]);
871 if (parse_tree(tree[i]) < 0)
872 die(_("failed to parse tree"));
873 init_tree_desc(&tree_desc[i], tree[i]->buffer, tree[i]->size);
874 }
875
876 unpack_tree_opt.head_idx = -1;
877 unpack_tree_opt.src_index = &the_index;
878 unpack_tree_opt.dst_index = &the_index;
879 unpack_tree_opt.merge = 1;
880 unpack_tree_opt.fn = stash_worktree_untracked_merge;
881
882 if (unpack_trees(ARRAY_SIZE(tree_desc), tree_desc, &unpack_tree_opt))
883 die(_("failed to unpack trees"));
884
885 do_diff_cache(&info->b_commit, diff_opt);
886 }
887
888 static int show_stash(int argc, const char **argv, const char *prefix)
889 {
890 int i;
891 int ret = -1;
892 struct stash_info info = STASH_INFO_INIT;
893 struct rev_info rev;
894 struct strvec stash_args = STRVEC_INIT;
895 struct strvec revision_args = STRVEC_INIT;
896 enum {
897 UNTRACKED_NONE,
898 UNTRACKED_INCLUDE,
899 UNTRACKED_ONLY
900 } show_untracked = show_include_untracked ? UNTRACKED_INCLUDE : UNTRACKED_NONE;
901 struct option options[] = {
902 OPT_SET_INT('u', "include-untracked", &show_untracked,
903 N_("include untracked files in the stash"),
904 UNTRACKED_INCLUDE),
905 OPT_SET_INT_F(0, "only-untracked", &show_untracked,
906 N_("only show untracked files in the stash"),
907 UNTRACKED_ONLY, PARSE_OPT_NONEG),
908 OPT_END()
909 };
910 int do_usage = 0;
911
912 init_diff_ui_defaults();
913 git_config(git_diff_ui_config, NULL);
914 repo_init_revisions(the_repository, &rev, prefix);
915
916 argc = parse_options(argc, argv, prefix, options, git_stash_show_usage,
917 PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN_OPT |
918 PARSE_OPT_KEEP_DASHDASH);
919
920 strvec_push(&revision_args, argv[0]);
921 for (i = 1; i < argc; i++) {
922 if (argv[i][0] != '-')
923 strvec_push(&stash_args, argv[i]);
924 else
925 strvec_push(&revision_args, argv[i]);
926 }
927
928 if (get_stash_info(&info, stash_args.nr, stash_args.v))
929 goto cleanup;
930
931 /*
932 * The config settings are applied only if there are not passed
933 * any options.
934 */
935 if (revision_args.nr == 1) {
936 if (show_stat)
937 rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT;
938
939 if (show_patch)
940 rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
941
942 if (!show_stat && !show_patch) {
943 ret = 0;
944 goto cleanup;
945 }
946 }
947
948 argc = setup_revisions(revision_args.nr, revision_args.v, &rev, NULL);
949 if (argc > 1)
950 goto usage;
951 if (!rev.diffopt.output_format) {
952 rev.diffopt.output_format = DIFF_FORMAT_PATCH;
953 diff_setup_done(&rev.diffopt);
954 }
955
956 rev.diffopt.flags.recursive = 1;
957 setup_diff_pager(&rev.diffopt);
958 switch (show_untracked) {
959 case UNTRACKED_NONE:
960 diff_tree_oid(&info.b_commit, &info.w_commit, "", &rev.diffopt);
961 break;
962 case UNTRACKED_ONLY:
963 if (info.has_u)
964 diff_root_tree_oid(&info.u_tree, "", &rev.diffopt);
965 break;
966 case UNTRACKED_INCLUDE:
967 if (info.has_u)
968 diff_include_untracked(&info, &rev.diffopt);
969 else
970 diff_tree_oid(&info.b_commit, &info.w_commit, "", &rev.diffopt);
971 break;
972 }
973 log_tree_diff_flush(&rev);
974
975 ret = diff_result_code(&rev.diffopt);
976 cleanup:
977 strvec_clear(&stash_args);
978 free_stash_info(&info);
979 release_revisions(&rev);
980 if (do_usage)
981 usage_with_options(git_stash_show_usage, options);
982 return ret;
983 usage:
984 do_usage = 1;
985 goto cleanup;
986 }
987
988 static int do_store_stash(const struct object_id *w_commit, const char *stash_msg,
989 int quiet)
990 {
991 struct stash_info info;
992 char revision[GIT_MAX_HEXSZ];
993
994 oid_to_hex_r(revision, w_commit);
995 assert_stash_like(&info, revision);
996
997 if (!stash_msg)
998 stash_msg = "Created via \"git stash store\".";
999
1000 if (update_ref(stash_msg, ref_stash, w_commit, NULL,
1001 REF_FORCE_CREATE_REFLOG,
1002 quiet ? UPDATE_REFS_QUIET_ON_ERR :
1003 UPDATE_REFS_MSG_ON_ERR)) {
1004 if (!quiet) {
1005 fprintf_ln(stderr, _("Cannot update %s with %s"),
1006 ref_stash, oid_to_hex(w_commit));
1007 }
1008 return -1;
1009 }
1010
1011 return 0;
1012 }
1013
1014 static int store_stash(int argc, const char **argv, const char *prefix)
1015 {
1016 int quiet = 0;
1017 const char *stash_msg = NULL;
1018 struct object_id obj;
1019 struct object_context dummy;
1020 struct option options[] = {
1021 OPT__QUIET(&quiet, N_("be quiet")),
1022 OPT_STRING('m', "message", &stash_msg, "message",
1023 N_("stash message")),
1024 OPT_END()
1025 };
1026
1027 argc = parse_options(argc, argv, prefix, options,
1028 git_stash_store_usage,
1029 PARSE_OPT_KEEP_UNKNOWN_OPT);
1030
1031 if (argc != 1) {
1032 if (!quiet)
1033 fprintf_ln(stderr, _("\"git stash store\" requires one "
1034 "<commit> argument"));
1035 return -1;
1036 }
1037
1038 if (get_oid_with_context(the_repository,
1039 argv[0], quiet ? GET_OID_QUIETLY : 0, &obj,
1040 &dummy)) {
1041 if (!quiet)
1042 fprintf_ln(stderr, _("Cannot update %s with %s"),
1043 ref_stash, argv[0]);
1044 return -1;
1045 }
1046
1047 return do_store_stash(&obj, stash_msg, quiet);
1048 }
1049
1050 static void add_pathspecs(struct strvec *args,
1051 const struct pathspec *ps) {
1052 int i;
1053
1054 for (i = 0; i < ps->nr; i++)
1055 strvec_push(args, ps->items[i].original);
1056 }
1057
1058 /*
1059 * `untracked_files` will be filled with the names of untracked files.
1060 * The return value is:
1061 *
1062 * = 0 if there are not any untracked files
1063 * > 0 if there are untracked files
1064 */
1065 static int get_untracked_files(const struct pathspec *ps, int include_untracked,
1066 struct strbuf *untracked_files)
1067 {
1068 int i;
1069 int found = 0;
1070 struct dir_struct dir = DIR_INIT;
1071
1072 if (include_untracked != INCLUDE_ALL_FILES)
1073 setup_standard_excludes(&dir);
1074
1075 fill_directory(&dir, the_repository->index, ps);
1076 for (i = 0; i < dir.nr; i++) {
1077 struct dir_entry *ent = dir.entries[i];
1078 found++;
1079 strbuf_addstr(untracked_files, ent->name);
1080 /* NUL-terminate: will be fed to update-index -z */
1081 strbuf_addch(untracked_files, '\0');
1082 }
1083
1084 dir_clear(&dir);
1085 return found;
1086 }
1087
1088 /*
1089 * The return value of `check_changes_tracked_files()` can be:
1090 *
1091 * < 0 if there was an error
1092 * = 0 if there are no changes.
1093 * > 0 if there are changes.
1094 */
1095 static int check_changes_tracked_files(const struct pathspec *ps)
1096 {
1097 struct rev_info rev;
1098 struct object_id dummy;
1099 int ret = 0;
1100
1101 /* No initial commit. */
1102 if (repo_get_oid(the_repository, "HEAD", &dummy))
1103 return -1;
1104
1105 if (repo_read_index(the_repository) < 0)
1106 return -1;
1107
1108 repo_init_revisions(the_repository, &rev, NULL);
1109 copy_pathspec(&rev.prune_data, ps);
1110
1111 rev.diffopt.flags.quick = 1;
1112 rev.diffopt.flags.ignore_submodules = 1;
1113 rev.abbrev = 0;
1114
1115 add_head_to_pending(&rev);
1116 diff_setup_done(&rev.diffopt);
1117
1118 run_diff_index(&rev, DIFF_INDEX_CACHED);
1119 if (diff_result_code(&rev.diffopt)) {
1120 ret = 1;
1121 goto done;
1122 }
1123
1124 run_diff_files(&rev, 0);
1125 if (diff_result_code(&rev.diffopt)) {
1126 ret = 1;
1127 goto done;
1128 }
1129
1130 done:
1131 release_revisions(&rev);
1132 return ret;
1133 }
1134
1135 /*
1136 * The function will fill `untracked_files` with the names of untracked files
1137 * It will return 1 if there were any changes and 0 if there were not.
1138 */
1139 static int check_changes(const struct pathspec *ps, int include_untracked,
1140 struct strbuf *untracked_files)
1141 {
1142 int ret = 0;
1143 if (check_changes_tracked_files(ps))
1144 ret = 1;
1145
1146 if (include_untracked && get_untracked_files(ps, include_untracked,
1147 untracked_files))
1148 ret = 1;
1149
1150 return ret;
1151 }
1152
1153 static int save_untracked_files(struct stash_info *info, struct strbuf *msg,
1154 struct strbuf files)
1155 {
1156 int ret = 0;
1157 struct strbuf untracked_msg = STRBUF_INIT;
1158 struct child_process cp_upd_index = CHILD_PROCESS_INIT;
1159 struct index_state istate = INDEX_STATE_INIT(the_repository);
1160
1161 cp_upd_index.git_cmd = 1;
1162 strvec_pushl(&cp_upd_index.args, "update-index", "-z", "--add",
1163 "--remove", "--stdin", NULL);
1164 strvec_pushf(&cp_upd_index.env, "GIT_INDEX_FILE=%s",
1165 stash_index_path.buf);
1166
1167 strbuf_addf(&untracked_msg, "untracked files on %s\n", msg->buf);
1168 if (pipe_command(&cp_upd_index, files.buf, files.len, NULL, 0,
1169 NULL, 0)) {
1170 ret = -1;
1171 goto done;
1172 }
1173
1174 if (write_index_as_tree(&info->u_tree, &istate, stash_index_path.buf, 0,
1175 NULL)) {
1176 ret = -1;
1177 goto done;
1178 }
1179
1180 if (commit_tree(untracked_msg.buf, untracked_msg.len,
1181 &info->u_tree, NULL, &info->u_commit, NULL, NULL)) {
1182 ret = -1;
1183 goto done;
1184 }
1185
1186 done:
1187 release_index(&istate);
1188 strbuf_release(&untracked_msg);
1189 remove_path(stash_index_path.buf);
1190 return ret;
1191 }
1192
1193 static int stash_staged(struct stash_info *info, struct strbuf *out_patch,
1194 int quiet)
1195 {
1196 int ret = 0;
1197 struct child_process cp_diff_tree = CHILD_PROCESS_INIT;
1198 struct index_state istate = INDEX_STATE_INIT(the_repository);
1199
1200 if (write_index_as_tree(&info->w_tree, &istate, the_repository->index_file,
1201 0, NULL)) {
1202 ret = -1;
1203 goto done;
1204 }
1205
1206 cp_diff_tree.git_cmd = 1;
1207 strvec_pushl(&cp_diff_tree.args, "diff-tree", "-p", "-U1", "HEAD",
1208 oid_to_hex(&info->w_tree), "--", NULL);
1209 if (pipe_command(&cp_diff_tree, NULL, 0, out_patch, 0, NULL, 0)) {
1210 ret = -1;
1211 goto done;
1212 }
1213
1214 if (!out_patch->len) {
1215 if (!quiet)
1216 fprintf_ln(stderr, _("No staged changes"));
1217 ret = 1;
1218 }
1219
1220 done:
1221 release_index(&istate);
1222 return ret;
1223 }
1224
1225 static int stash_patch(struct stash_info *info, const struct pathspec *ps,
1226 struct strbuf *out_patch, int quiet)
1227 {
1228 int ret = 0;
1229 struct child_process cp_read_tree = CHILD_PROCESS_INIT;
1230 struct child_process cp_diff_tree = CHILD_PROCESS_INIT;
1231 struct index_state istate = INDEX_STATE_INIT(the_repository);
1232 char *old_index_env = NULL, *old_repo_index_file;
1233
1234 remove_path(stash_index_path.buf);
1235
1236 cp_read_tree.git_cmd = 1;
1237 strvec_pushl(&cp_read_tree.args, "read-tree", "HEAD", NULL);
1238 strvec_pushf(&cp_read_tree.env, "GIT_INDEX_FILE=%s",
1239 stash_index_path.buf);
1240 if (run_command(&cp_read_tree)) {
1241 ret = -1;
1242 goto done;
1243 }
1244
1245 /* Find out what the user wants. */
1246 old_repo_index_file = the_repository->index_file;
1247 the_repository->index_file = stash_index_path.buf;
1248 old_index_env = xstrdup_or_null(getenv(INDEX_ENVIRONMENT));
1249 setenv(INDEX_ENVIRONMENT, the_repository->index_file, 1);
1250
1251 ret = !!run_add_p(the_repository, ADD_P_STASH, NULL, ps);
1252
1253 the_repository->index_file = old_repo_index_file;
1254 if (old_index_env && *old_index_env)
1255 setenv(INDEX_ENVIRONMENT, old_index_env, 1);
1256 else
1257 unsetenv(INDEX_ENVIRONMENT);
1258 FREE_AND_NULL(old_index_env);
1259
1260 /* State of the working tree. */
1261 if (write_index_as_tree(&info->w_tree, &istate, stash_index_path.buf, 0,
1262 NULL)) {
1263 ret = -1;
1264 goto done;
1265 }
1266
1267 cp_diff_tree.git_cmd = 1;
1268 strvec_pushl(&cp_diff_tree.args, "diff-tree", "-p", "-U1", "HEAD",
1269 oid_to_hex(&info->w_tree), "--", NULL);
1270 if (pipe_command(&cp_diff_tree, NULL, 0, out_patch, 0, NULL, 0)) {
1271 ret = -1;
1272 goto done;
1273 }
1274
1275 if (!out_patch->len) {
1276 if (!quiet)
1277 fprintf_ln(stderr, _("No changes selected"));
1278 ret = 1;
1279 }
1280
1281 done:
1282 release_index(&istate);
1283 remove_path(stash_index_path.buf);
1284 return ret;
1285 }
1286
1287 static int stash_working_tree(struct stash_info *info, const struct pathspec *ps)
1288 {
1289 int ret = 0;
1290 struct rev_info rev;
1291 struct child_process cp_upd_index = CHILD_PROCESS_INIT;
1292 struct strbuf diff_output = STRBUF_INIT;
1293 struct index_state istate = INDEX_STATE_INIT(the_repository);
1294
1295 repo_init_revisions(the_repository, &rev, NULL);
1296 copy_pathspec(&rev.prune_data, ps);
1297
1298 set_alternate_index_output(stash_index_path.buf);
1299 if (reset_tree(&info->i_tree, 0, 0)) {
1300 ret = -1;
1301 goto done;
1302 }
1303 set_alternate_index_output(NULL);
1304
1305 rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
1306 rev.diffopt.format_callback = add_diff_to_buf;
1307 rev.diffopt.format_callback_data = &diff_output;
1308
1309 if (repo_read_index_preload(the_repository, &rev.diffopt.pathspec, 0) < 0) {
1310 ret = -1;
1311 goto done;
1312 }
1313
1314 add_pending_object(&rev, parse_object(the_repository, &info->b_commit),
1315 "");
1316 run_diff_index(&rev, 0);
1317
1318 cp_upd_index.git_cmd = 1;
1319 strvec_pushl(&cp_upd_index.args, "update-index",
1320 "--ignore-skip-worktree-entries",
1321 "-z", "--add", "--remove", "--stdin", NULL);
1322 strvec_pushf(&cp_upd_index.env, "GIT_INDEX_FILE=%s",
1323 stash_index_path.buf);
1324
1325 if (pipe_command(&cp_upd_index, diff_output.buf, diff_output.len,
1326 NULL, 0, NULL, 0)) {
1327 ret = -1;
1328 goto done;
1329 }
1330
1331 if (write_index_as_tree(&info->w_tree, &istate, stash_index_path.buf, 0,
1332 NULL)) {
1333 ret = -1;
1334 goto done;
1335 }
1336
1337 done:
1338 release_index(&istate);
1339 release_revisions(&rev);
1340 strbuf_release(&diff_output);
1341 remove_path(stash_index_path.buf);
1342 return ret;
1343 }
1344
1345 static int do_create_stash(const struct pathspec *ps, struct strbuf *stash_msg_buf,
1346 int include_untracked, int patch_mode, int only_staged,
1347 struct stash_info *info, struct strbuf *patch,
1348 int quiet)
1349 {
1350 int ret = 0;
1351 int flags = 0;
1352 int untracked_commit_option = 0;
1353 const char *head_short_sha1 = NULL;
1354 const char *branch_ref = NULL;
1355 const char *branch_name = "(no branch)";
1356 struct commit *head_commit = NULL;
1357 struct commit_list *parents = NULL;
1358 struct strbuf msg = STRBUF_INIT;
1359 struct strbuf commit_tree_label = STRBUF_INIT;
1360 struct strbuf untracked_files = STRBUF_INIT;
1361
1362 prepare_fallback_ident("git stash", "git@stash");
1363
1364 repo_read_index_preload(the_repository, NULL, 0);
1365 if (repo_refresh_and_write_index(the_repository, REFRESH_QUIET, 0, 0,
1366 NULL, NULL, NULL) < 0) {
1367 ret = error(_("could not write index"));
1368 goto done;
1369 }
1370
1371 if (repo_get_oid(the_repository, "HEAD", &info->b_commit)) {
1372 if (!quiet)
1373 fprintf_ln(stderr, _("You do not have "
1374 "the initial commit yet"));
1375 ret = -1;
1376 goto done;
1377 } else {
1378 head_commit = lookup_commit(the_repository, &info->b_commit);
1379 }
1380
1381 if (!check_changes(ps, include_untracked, &untracked_files)) {
1382 ret = 1;
1383 goto done;
1384 }
1385
1386 branch_ref = resolve_ref_unsafe("HEAD", 0, NULL, &flags);
1387 if (flags & REF_ISSYMREF)
1388 skip_prefix(branch_ref, "refs/heads/", &branch_name);
1389 head_short_sha1 = repo_find_unique_abbrev(the_repository,
1390 &head_commit->object.oid,
1391 DEFAULT_ABBREV);
1392 strbuf_addf(&msg, "%s: %s ", branch_name, head_short_sha1);
1393 pp_commit_easy(CMIT_FMT_ONELINE, head_commit, &msg);
1394
1395 strbuf_addf(&commit_tree_label, "index on %s\n", msg.buf);
1396 commit_list_insert(head_commit, &parents);
1397 if (write_index_as_tree(&info->i_tree, &the_index, get_index_file(), 0,
1398 NULL) ||
1399 commit_tree(commit_tree_label.buf, commit_tree_label.len,
1400 &info->i_tree, parents, &info->i_commit, NULL, NULL)) {
1401 if (!quiet)
1402 fprintf_ln(stderr, _("Cannot save the current "
1403 "index state"));
1404 ret = -1;
1405 goto done;
1406 }
1407
1408 if (include_untracked) {
1409 if (save_untracked_files(info, &msg, untracked_files)) {
1410 if (!quiet)
1411 fprintf_ln(stderr, _("Cannot save "
1412 "the untracked files"));
1413 ret = -1;
1414 goto done;
1415 }
1416 untracked_commit_option = 1;
1417 }
1418 if (patch_mode) {
1419 ret = stash_patch(info, ps, patch, quiet);
1420 if (ret < 0) {
1421 if (!quiet)
1422 fprintf_ln(stderr, _("Cannot save the current "
1423 "worktree state"));
1424 goto done;
1425 } else if (ret > 0) {
1426 goto done;
1427 }
1428 } else if (only_staged) {
1429 ret = stash_staged(info, patch, quiet);
1430 if (ret < 0) {
1431 if (!quiet)
1432 fprintf_ln(stderr, _("Cannot save the current "
1433 "staged state"));
1434 goto done;
1435 } else if (ret > 0) {
1436 goto done;
1437 }
1438 } else {
1439 if (stash_working_tree(info, ps)) {
1440 if (!quiet)
1441 fprintf_ln(stderr, _("Cannot save the current "
1442 "worktree state"));
1443 ret = -1;
1444 goto done;
1445 }
1446 }
1447
1448 if (!stash_msg_buf->len)
1449 strbuf_addf(stash_msg_buf, "WIP on %s", msg.buf);
1450 else
1451 strbuf_insertf(stash_msg_buf, 0, "On %s: ", branch_name);
1452
1453 /*
1454 * `parents` will be empty after calling `commit_tree()`, so there is
1455 * no need to call `free_commit_list()`
1456 */
1457 parents = NULL;
1458 if (untracked_commit_option)
1459 commit_list_insert(lookup_commit(the_repository,
1460 &info->u_commit),
1461 &parents);
1462 commit_list_insert(lookup_commit(the_repository, &info->i_commit),
1463 &parents);
1464 commit_list_insert(head_commit, &parents);
1465
1466 if (commit_tree(stash_msg_buf->buf, stash_msg_buf->len, &info->w_tree,
1467 parents, &info->w_commit, NULL, NULL)) {
1468 if (!quiet)
1469 fprintf_ln(stderr, _("Cannot record "
1470 "working tree state"));
1471 ret = -1;
1472 goto done;
1473 }
1474
1475 done:
1476 strbuf_release(&commit_tree_label);
1477 strbuf_release(&msg);
1478 strbuf_release(&untracked_files);
1479 return ret;
1480 }
1481
1482 static int create_stash(int argc, const char **argv, const char *prefix UNUSED)
1483 {
1484 int ret;
1485 struct strbuf stash_msg_buf = STRBUF_INIT;
1486 struct stash_info info = STASH_INFO_INIT;
1487 struct pathspec ps;
1488
1489 /* Starting with argv[1], since argv[0] is "create" */
1490 strbuf_join_argv(&stash_msg_buf, argc - 1, ++argv, ' ');
1491
1492 memset(&ps, 0, sizeof(ps));
1493 if (!check_changes_tracked_files(&ps))
1494 return 0;
1495
1496 ret = do_create_stash(&ps, &stash_msg_buf, 0, 0, 0, &info,
1497 NULL, 0);
1498 if (!ret)
1499 printf_ln("%s", oid_to_hex(&info.w_commit));
1500
1501 free_stash_info(&info);
1502 strbuf_release(&stash_msg_buf);
1503 return ret;
1504 }
1505
1506 static int do_push_stash(const struct pathspec *ps, const char *stash_msg, int quiet,
1507 int keep_index, int patch_mode, int include_untracked, int only_staged)
1508 {
1509 int ret = 0;
1510 struct stash_info info = STASH_INFO_INIT;
1511 struct strbuf patch = STRBUF_INIT;
1512 struct strbuf stash_msg_buf = STRBUF_INIT;
1513 struct strbuf untracked_files = STRBUF_INIT;
1514
1515 if (patch_mode && keep_index == -1)
1516 keep_index = 1;
1517
1518 if (patch_mode && include_untracked) {
1519 fprintf_ln(stderr, _("Can't use --patch and --include-untracked"
1520 " or --all at the same time"));
1521 ret = -1;
1522 goto done;
1523 }
1524
1525 /* --patch overrides --staged */
1526 if (patch_mode)
1527 only_staged = 0;
1528
1529 if (only_staged && include_untracked) {
1530 fprintf_ln(stderr, _("Can't use --staged and --include-untracked"
1531 " or --all at the same time"));
1532 ret = -1;
1533 goto done;
1534 }
1535
1536 repo_read_index_preload(the_repository, NULL, 0);
1537 if (!include_untracked && ps->nr) {
1538 int i;
1539 char *ps_matched = xcalloc(ps->nr, 1);
1540
1541 /* TODO: audit for interaction with sparse-index. */
1542 ensure_full_index(&the_index);
1543 for (i = 0; i < the_index.cache_nr; i++)
1544 ce_path_match(&the_index, the_index.cache[i], ps,
1545 ps_matched);
1546
1547 if (report_path_error(ps_matched, ps)) {
1548 fprintf_ln(stderr, _("Did you forget to 'git add'?"));
1549 ret = -1;
1550 free(ps_matched);
1551 goto done;
1552 }
1553 free(ps_matched);
1554 }
1555
1556 if (repo_refresh_and_write_index(the_repository, REFRESH_QUIET, 0, 0,
1557 NULL, NULL, NULL)) {
1558 ret = error(_("could not write index"));
1559 goto done;
1560 }
1561
1562 if (!check_changes(ps, include_untracked, &untracked_files)) {
1563 if (!quiet)
1564 printf_ln(_("No local changes to save"));
1565 goto done;
1566 }
1567
1568 if (!reflog_exists(ref_stash) && do_clear_stash()) {
1569 ret = -1;
1570 if (!quiet)
1571 fprintf_ln(stderr, _("Cannot initialize stash"));
1572 goto done;
1573 }
1574
1575 if (stash_msg)
1576 strbuf_addstr(&stash_msg_buf, stash_msg);
1577 if (do_create_stash(ps, &stash_msg_buf, include_untracked, patch_mode, only_staged,
1578 &info, &patch, quiet)) {
1579 ret = -1;
1580 goto done;
1581 }
1582
1583 if (do_store_stash(&info.w_commit, stash_msg_buf.buf, 1)) {
1584 ret = -1;
1585 if (!quiet)
1586 fprintf_ln(stderr, _("Cannot save the current status"));
1587 goto done;
1588 }
1589
1590 if (!quiet)
1591 printf_ln(_("Saved working directory and index state %s"),
1592 stash_msg_buf.buf);
1593
1594 if (!(patch_mode || only_staged)) {
1595 if (include_untracked && !ps->nr) {
1596 struct child_process cp = CHILD_PROCESS_INIT;
1597
1598 cp.git_cmd = 1;
1599 if (startup_info->original_cwd) {
1600 cp.dir = startup_info->original_cwd;
1601 strvec_pushf(&cp.env, "%s=%s",
1602 GIT_WORK_TREE_ENVIRONMENT,
1603 the_repository->worktree);
1604 }
1605 strvec_pushl(&cp.args, "clean", "--force",
1606 "--quiet", "-d", ":/", NULL);
1607 if (include_untracked == INCLUDE_ALL_FILES)
1608 strvec_push(&cp.args, "-x");
1609 if (run_command(&cp)) {
1610 ret = -1;
1611 goto done;
1612 }
1613 }
1614 discard_index(&the_index);
1615 if (ps->nr) {
1616 struct child_process cp_add = CHILD_PROCESS_INIT;
1617 struct child_process cp_diff = CHILD_PROCESS_INIT;
1618 struct child_process cp_apply = CHILD_PROCESS_INIT;
1619 struct strbuf out = STRBUF_INIT;
1620
1621 cp_add.git_cmd = 1;
1622 strvec_push(&cp_add.args, "add");
1623 if (!include_untracked)
1624 strvec_push(&cp_add.args, "-u");
1625 if (include_untracked == INCLUDE_ALL_FILES)
1626 strvec_push(&cp_add.args, "--force");
1627 strvec_push(&cp_add.args, "--");
1628 add_pathspecs(&cp_add.args, ps);
1629 if (run_command(&cp_add)) {
1630 ret = -1;
1631 goto done;
1632 }
1633
1634 cp_diff.git_cmd = 1;
1635 strvec_pushl(&cp_diff.args, "diff-index", "-p",
1636 "--cached", "--binary", "HEAD", "--",
1637 NULL);
1638 add_pathspecs(&cp_diff.args, ps);
1639 if (pipe_command(&cp_diff, NULL, 0, &out, 0, NULL, 0)) {
1640 ret = -1;
1641 goto done;
1642 }
1643
1644 cp_apply.git_cmd = 1;
1645 strvec_pushl(&cp_apply.args, "apply", "--index",
1646 "-R", NULL);
1647 if (pipe_command(&cp_apply, out.buf, out.len, NULL, 0,
1648 NULL, 0)) {
1649 ret = -1;
1650 goto done;
1651 }
1652 } else {
1653 struct child_process cp = CHILD_PROCESS_INIT;
1654 cp.git_cmd = 1;
1655 /* BUG: this nukes untracked files in the way */
1656 strvec_pushl(&cp.args, "reset", "--hard", "-q",
1657 "--no-recurse-submodules", NULL);
1658 if (run_command(&cp)) {
1659 ret = -1;
1660 goto done;
1661 }
1662 }
1663
1664 if (keep_index == 1 && !is_null_oid(&info.i_tree)) {
1665 struct child_process cp = CHILD_PROCESS_INIT;
1666
1667 cp.git_cmd = 1;
1668 strvec_pushl(&cp.args, "checkout", "--no-overlay",
1669 oid_to_hex(&info.i_tree), "--", NULL);
1670 if (!ps->nr)
1671 strvec_push(&cp.args, ":/");
1672 else
1673 add_pathspecs(&cp.args, ps);
1674 if (run_command(&cp)) {
1675 ret = -1;
1676 goto done;
1677 }
1678 }
1679 goto done;
1680 } else {
1681 struct child_process cp = CHILD_PROCESS_INIT;
1682
1683 cp.git_cmd = 1;
1684 strvec_pushl(&cp.args, "apply", "-R", NULL);
1685
1686 if (pipe_command(&cp, patch.buf, patch.len, NULL, 0, NULL, 0)) {
1687 if (!quiet)
1688 fprintf_ln(stderr, _("Cannot remove "
1689 "worktree changes"));
1690 ret = -1;
1691 goto done;
1692 }
1693
1694 if (keep_index < 1) {
1695 struct child_process cp = CHILD_PROCESS_INIT;
1696
1697 cp.git_cmd = 1;
1698 strvec_pushl(&cp.args, "reset", "-q", "--refresh", "--",
1699 NULL);
1700 add_pathspecs(&cp.args, ps);
1701 if (run_command(&cp)) {
1702 ret = -1;
1703 goto done;
1704 }
1705 }
1706 goto done;
1707 }
1708
1709 done:
1710 strbuf_release(&patch);
1711 free_stash_info(&info);
1712 strbuf_release(&stash_msg_buf);
1713 strbuf_release(&untracked_files);
1714 return ret;
1715 }
1716
1717 static int push_stash(int argc, const char **argv, const char *prefix,
1718 int push_assumed)
1719 {
1720 int force_assume = 0;
1721 int keep_index = -1;
1722 int only_staged = 0;
1723 int patch_mode = 0;
1724 int include_untracked = 0;
1725 int quiet = 0;
1726 int pathspec_file_nul = 0;
1727 const char *stash_msg = NULL;
1728 const char *pathspec_from_file = NULL;
1729 struct pathspec ps;
1730 struct option options[] = {
1731 OPT_BOOL('k', "keep-index", &keep_index,
1732 N_("keep index")),
1733 OPT_BOOL('S', "staged", &only_staged,
1734 N_("stash staged changes only")),
1735 OPT_BOOL('p', "patch", &patch_mode,
1736 N_("stash in patch mode")),
1737 OPT__QUIET(&quiet, N_("quiet mode")),
1738 OPT_BOOL('u', "include-untracked", &include_untracked,
1739 N_("include untracked files in stash")),
1740 OPT_SET_INT('a', "all", &include_untracked,
1741 N_("include ignore files"), 2),
1742 OPT_STRING('m', "message", &stash_msg, N_("message"),
1743 N_("stash message")),
1744 OPT_PATHSPEC_FROM_FILE(&pathspec_from_file),
1745 OPT_PATHSPEC_FILE_NUL(&pathspec_file_nul),
1746 OPT_END()
1747 };
1748 int ret;
1749
1750 if (argc) {
1751 force_assume = !strcmp(argv[0], "-p");
1752 argc = parse_options(argc, argv, prefix, options,
1753 push_assumed ? git_stash_usage :
1754 git_stash_push_usage,
1755 PARSE_OPT_KEEP_DASHDASH);
1756 }
1757
1758 if (argc) {
1759 if (!strcmp(argv[0], "--")) {
1760 argc--;
1761 argv++;
1762 } else if (push_assumed && !force_assume) {
1763 die("subcommand wasn't specified; 'push' can't be assumed due to unexpected token '%s'",
1764 argv[0]);
1765 }
1766 }
1767
1768 parse_pathspec(&ps, 0, PATHSPEC_PREFER_FULL | PATHSPEC_PREFIX_ORIGIN,
1769 prefix, argv);
1770
1771 if (pathspec_from_file) {
1772 if (patch_mode)
1773 die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "--patch");
1774
1775 if (only_staged)
1776 die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "--staged");
1777
1778 if (ps.nr)
1779 die(_("'%s' and pathspec arguments cannot be used together"), "--pathspec-from-file");
1780
1781 parse_pathspec_file(&ps, 0,
1782 PATHSPEC_PREFER_FULL | PATHSPEC_PREFIX_ORIGIN,
1783 prefix, pathspec_from_file, pathspec_file_nul);
1784 } else if (pathspec_file_nul) {
1785 die(_("the option '%s' requires '%s'"), "--pathspec-file-nul", "--pathspec-from-file");
1786 }
1787
1788 ret = do_push_stash(&ps, stash_msg, quiet, keep_index, patch_mode,
1789 include_untracked, only_staged);
1790 clear_pathspec(&ps);
1791 return ret;
1792 }
1793
1794 static int push_stash_unassumed(int argc, const char **argv, const char *prefix)
1795 {
1796 return push_stash(argc, argv, prefix, 0);
1797 }
1798
1799 static int save_stash(int argc, const char **argv, const char *prefix)
1800 {
1801 int keep_index = -1;
1802 int only_staged = 0;
1803 int patch_mode = 0;
1804 int include_untracked = 0;
1805 int quiet = 0;
1806 int ret = 0;
1807 const char *stash_msg = NULL;
1808 struct pathspec ps;
1809 struct strbuf stash_msg_buf = STRBUF_INIT;
1810 struct option options[] = {
1811 OPT_BOOL('k', "keep-index", &keep_index,
1812 N_("keep index")),
1813 OPT_BOOL('S', "staged", &only_staged,
1814 N_("stash staged changes only")),
1815 OPT_BOOL('p', "patch", &patch_mode,
1816 N_("stash in patch mode")),
1817 OPT__QUIET(&quiet, N_("quiet mode")),
1818 OPT_BOOL('u', "include-untracked", &include_untracked,
1819 N_("include untracked files in stash")),
1820 OPT_SET_INT('a', "all", &include_untracked,
1821 N_("include ignore files"), 2),
1822 OPT_STRING('m', "message", &stash_msg, "message",
1823 N_("stash message")),
1824 OPT_END()
1825 };
1826
1827 argc = parse_options(argc, argv, prefix, options,
1828 git_stash_save_usage,
1829 PARSE_OPT_KEEP_DASHDASH);
1830
1831 if (argc)
1832 stash_msg = strbuf_join_argv(&stash_msg_buf, argc, argv, ' ');
1833
1834 memset(&ps, 0, sizeof(ps));
1835 ret = do_push_stash(&ps, stash_msg, quiet, keep_index,
1836 patch_mode, include_untracked, only_staged);
1837
1838 strbuf_release(&stash_msg_buf);
1839 return ret;
1840 }
1841
1842 int cmd_stash(int argc, const char **argv, const char *prefix)
1843 {
1844 pid_t pid = getpid();
1845 const char *index_file;
1846 struct strvec args = STRVEC_INIT;
1847 parse_opt_subcommand_fn *fn = NULL;
1848 struct option options[] = {
1849 OPT_SUBCOMMAND("apply", &fn, apply_stash),
1850 OPT_SUBCOMMAND("clear", &fn, clear_stash),
1851 OPT_SUBCOMMAND("drop", &fn, drop_stash),
1852 OPT_SUBCOMMAND("pop", &fn, pop_stash),
1853 OPT_SUBCOMMAND("branch", &fn, branch_stash),
1854 OPT_SUBCOMMAND("list", &fn, list_stash),
1855 OPT_SUBCOMMAND("show", &fn, show_stash),
1856 OPT_SUBCOMMAND("store", &fn, store_stash),
1857 OPT_SUBCOMMAND("create", &fn, create_stash),
1858 OPT_SUBCOMMAND("push", &fn, push_stash_unassumed),
1859 OPT_SUBCOMMAND_F("save", &fn, save_stash, PARSE_OPT_NOCOMPLETE),
1860 OPT_END()
1861 };
1862
1863 git_config(git_stash_config, NULL);
1864
1865 argc = parse_options(argc, argv, prefix, options, git_stash_usage,
1866 PARSE_OPT_SUBCOMMAND_OPTIONAL |
1867 PARSE_OPT_KEEP_UNKNOWN_OPT |
1868 PARSE_OPT_KEEP_DASHDASH);
1869
1870 prepare_repo_settings(the_repository);
1871 the_repository->settings.command_requires_full_index = 0;
1872
1873 index_file = get_index_file();
1874 strbuf_addf(&stash_index_path, "%s.stash.%" PRIuMAX, index_file,
1875 (uintmax_t)pid);
1876
1877 if (fn)
1878 return !!fn(argc, argv, prefix);
1879 else if (!argc)
1880 return !!push_stash_unassumed(0, NULL, prefix);
1881
1882 /* Assume 'stash push' */
1883 strvec_push(&args, "push");
1884 strvec_pushv(&args, argv);
1885 return !!push_stash(args.nr, args.v, prefix, 1);
1886 }
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