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consistently use "fallthrough" comments in switches
[git.git] / builtin / clean.c
blob733b6d3745ee5780c697323372f1e78e28b8a117
1 /*
2 * "git clean" builtin command
3 *
4 * Copyright (C) 2007 Shawn Bohrer
5 *
6 * Based on git-clean.sh by Pavel Roskin
7 */
8
9 #include "builtin.h"
10 #include "cache.h"
11 #include "config.h"
12 #include "dir.h"
13 #include "parse-options.h"
14 #include "string-list.h"
15 #include "quote.h"
16 #include "column.h"
17 #include "color.h"
18 #include "pathspec.h"
19
20 static int force = -1; /* unset */
21 static int interactive;
22 static struct string_list del_list = STRING_LIST_INIT_DUP;
23 static unsigned int colopts;
24
25 static const char *const builtin_clean_usage[] = {
26 N_("git clean [-d] [-f] [-i] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>..."),
27 NULL
28 };
29
30 static const char *msg_remove = N_("Removing %s\n");
31 static const char *msg_would_remove = N_("Would remove %s\n");
32 static const char *msg_skip_git_dir = N_("Skipping repository %s\n");
33 static const char *msg_would_skip_git_dir = N_("Would skip repository %s\n");
34 static const char *msg_warn_remove_failed = N_("failed to remove %s");
35
36 enum color_clean {
37 CLEAN_COLOR_RESET = 0,
38 CLEAN_COLOR_PLAIN = 1,
39 CLEAN_COLOR_PROMPT = 2,
40 CLEAN_COLOR_HEADER = 3,
41 CLEAN_COLOR_HELP = 4,
42 CLEAN_COLOR_ERROR = 5
43 };
44
45 static int clean_use_color = -1;
46 static char clean_colors[][COLOR_MAXLEN] = {
47 [CLEAN_COLOR_ERROR] = GIT_COLOR_BOLD_RED,
48 [CLEAN_COLOR_HEADER] = GIT_COLOR_BOLD,
49 [CLEAN_COLOR_HELP] = GIT_COLOR_BOLD_RED,
50 [CLEAN_COLOR_PLAIN] = GIT_COLOR_NORMAL,
51 [CLEAN_COLOR_PROMPT] = GIT_COLOR_BOLD_BLUE,
52 [CLEAN_COLOR_RESET] = GIT_COLOR_RESET,
53 };
54
55 #define MENU_OPTS_SINGLETON 01
56 #define MENU_OPTS_IMMEDIATE 02
57 #define MENU_OPTS_LIST_ONLY 04
58
59 struct menu_opts {
60 const char *header;
61 const char *prompt;
62 int flags;
63 };
64
65 #define MENU_RETURN_NO_LOOP 10
66
67 struct menu_item {
68 char hotkey;
69 const char *title;
70 int selected;
71 int (*fn)(void);
72 };
73
74 enum menu_stuff_type {
75 MENU_STUFF_TYPE_STRING_LIST = 1,
76 MENU_STUFF_TYPE_MENU_ITEM
77 };
78
79 struct menu_stuff {
80 enum menu_stuff_type type;
81 int nr;
82 void *stuff;
83 };
84
85 static int parse_clean_color_slot(const char *var)
86 {
87 if (!strcasecmp(var, "reset"))
88 return CLEAN_COLOR_RESET;
89 if (!strcasecmp(var, "plain"))
90 return CLEAN_COLOR_PLAIN;
91 if (!strcasecmp(var, "prompt"))
92 return CLEAN_COLOR_PROMPT;
93 if (!strcasecmp(var, "header"))
94 return CLEAN_COLOR_HEADER;
95 if (!strcasecmp(var, "help"))
96 return CLEAN_COLOR_HELP;
97 if (!strcasecmp(var, "error"))
98 return CLEAN_COLOR_ERROR;
99 return -1;
100 }
101
102 static int git_clean_config(const char *var, const char *value, void *cb)
103 {
104 const char *slot_name;
105
106 if (starts_with(var, "column."))
107 return git_column_config(var, value, "clean", &colopts);
108
109 /* honors the color.interactive* config variables which also
110 applied in git-add--interactive and git-stash */
111 if (!strcmp(var, "color.interactive")) {
112 clean_use_color = git_config_colorbool(var, value);
113 return 0;
114 }
115 if (skip_prefix(var, "color.interactive.", &slot_name)) {
116 int slot = parse_clean_color_slot(slot_name);
117 if (slot < 0)
118 return 0;
119 if (!value)
120 return config_error_nonbool(var);
121 return color_parse(value, clean_colors[slot]);
122 }
123
124 if (!strcmp(var, "clean.requireforce")) {
125 force = !git_config_bool(var, value);
126 return 0;
127 }
128
129 return git_default_config(var, value, cb);
130 }
131
132 static const char *clean_get_color(enum color_clean ix)
133 {
134 if (want_color(clean_use_color))
135 return clean_colors[ix];
136 return "";
137 }
138
139 static void clean_print_color(enum color_clean ix)
140 {
141 printf("%s", clean_get_color(ix));
142 }
143
144 static int exclude_cb(const struct option *opt, const char *arg, int unset)
145 {
146 struct string_list *exclude_list = opt->value;
147 string_list_append(exclude_list, arg);
148 return 0;
149 }
150
151 static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
152 int dry_run, int quiet, int *dir_gone)
153 {
154 DIR *dir;
155 struct strbuf quoted = STRBUF_INIT;
156 struct dirent *e;
157 int res = 0, ret = 0, gone = 1, original_len = path->len, len;
158 struct string_list dels = STRING_LIST_INIT_DUP;
159
160 *dir_gone = 1;
161
162 if ((force_flag & REMOVE_DIR_KEEP_NESTED_GIT) && is_nonbare_repository_dir(path)) {
163 if (!quiet) {
164 quote_path_relative(path->buf, prefix, &quoted);
165 printf(dry_run ? _(msg_would_skip_git_dir) : _(msg_skip_git_dir),
166 quoted.buf);
167 }
168
169 *dir_gone = 0;
170 goto out;
171 }
172
173 dir = opendir(path->buf);
174 if (!dir) {
175 /* an empty dir could be removed even if it is unreadble */
176 res = dry_run ? 0 : rmdir(path->buf);
177 if (res) {
178 int saved_errno = errno;
179 quote_path_relative(path->buf, prefix, &quoted);
180 errno = saved_errno;
181 warning_errno(_(msg_warn_remove_failed), quoted.buf);
182 *dir_gone = 0;
183 }
184 ret = res;
185 goto out;
186 }
187
188 strbuf_complete(path, '/');
189
190 len = path->len;
191 while ((e = readdir(dir)) != NULL) {
192 struct stat st;
193 if (is_dot_or_dotdot(e->d_name))
194 continue;
195
196 strbuf_setlen(path, len);
197 strbuf_addstr(path, e->d_name);
198 if (lstat(path->buf, &st))
199 ; /* fall thru */
200 else if (S_ISDIR(st.st_mode)) {
201 if (remove_dirs(path, prefix, force_flag, dry_run, quiet, &gone))
202 ret = 1;
203 if (gone) {
204 quote_path_relative(path->buf, prefix, &quoted);
205 string_list_append(&dels, quoted.buf);
206 } else
207 *dir_gone = 0;
208 continue;
209 } else {
210 res = dry_run ? 0 : unlink(path->buf);
211 if (!res) {
212 quote_path_relative(path->buf, prefix, &quoted);
213 string_list_append(&dels, quoted.buf);
214 } else {
215 int saved_errno = errno;
216 quote_path_relative(path->buf, prefix, &quoted);
217 errno = saved_errno;
218 warning_errno(_(msg_warn_remove_failed), quoted.buf);
219 *dir_gone = 0;
220 ret = 1;
221 }
222 continue;
223 }
224
225 /* path too long, stat fails, or non-directory still exists */
226 *dir_gone = 0;
227 ret = 1;
228 break;
229 }
230 closedir(dir);
231
232 strbuf_setlen(path, original_len);
233
234 if (*dir_gone) {
235 res = dry_run ? 0 : rmdir(path->buf);
236 if (!res)
237 *dir_gone = 1;
238 else {
239 int saved_errno = errno;
240 quote_path_relative(path->buf, prefix, &quoted);
241 errno = saved_errno;
242 warning_errno(_(msg_warn_remove_failed), quoted.buf);
243 *dir_gone = 0;
244 ret = 1;
245 }
246 }
247
248 if (!*dir_gone && !quiet) {
249 int i;
250 for (i = 0; i < dels.nr; i++)
251 printf(dry_run ? _(msg_would_remove) : _(msg_remove), dels.items[i].string);
252 }
253 out:
254 strbuf_release(&quoted);
255 string_list_clear(&dels, 0);
256 return ret;
257 }
258
259 static void pretty_print_dels(void)
260 {
261 struct string_list list = STRING_LIST_INIT_DUP;
262 struct string_list_item *item;
263 struct strbuf buf = STRBUF_INIT;
264 const char *qname;
265 struct column_options copts;
266
267 for_each_string_list_item(item, &del_list) {
268 qname = quote_path_relative(item->string, NULL, &buf);
269 string_list_append(&list, qname);
270 }
271
272 /*
273 * always enable column display, we only consult column.*
274 * about layout strategy and stuff
275 */
276 colopts = (colopts & ~COL_ENABLE_MASK) | COL_ENABLED;
277 memset(&copts, 0, sizeof(copts));
278 copts.indent = " ";
279 copts.padding = 2;
280 print_columns(&list, colopts, &copts);
281 strbuf_release(&buf);
282 string_list_clear(&list, 0);
283 }
284
285 static void pretty_print_menus(struct string_list *menu_list)
286 {
287 unsigned int local_colopts = 0;
288 struct column_options copts;
289
290 local_colopts = COL_ENABLED | COL_ROW;
291 memset(&copts, 0, sizeof(copts));
292 copts.indent = " ";
293 copts.padding = 2;
294 print_columns(menu_list, local_colopts, &copts);
295 }
296
297 static void prompt_help_cmd(int singleton)
298 {
299 clean_print_color(CLEAN_COLOR_HELP);
300 printf(singleton ?
301 _("Prompt help:\n"
302 "1 - select a numbered item\n"
303 "foo - select item based on unique prefix\n"
304 " - (empty) select nothing\n") :
305 _("Prompt help:\n"
306 "1 - select a single item\n"
307 "3-5 - select a range of items\n"
308 "2-3,6-9 - select multiple ranges\n"
309 "foo - select item based on unique prefix\n"
310 "-... - unselect specified items\n"
311 "* - choose all items\n"
312 " - (empty) finish selecting\n"));
313 clean_print_color(CLEAN_COLOR_RESET);
314 }
315
316 /*
317 * display menu stuff with number prefix and hotkey highlight
318 */
319 static void print_highlight_menu_stuff(struct menu_stuff *stuff, int **chosen)
320 {
321 struct string_list menu_list = STRING_LIST_INIT_DUP;
322 struct strbuf menu = STRBUF_INIT;
323 struct menu_item *menu_item;
324 struct string_list_item *string_list_item;
325 int i;
326
327 switch (stuff->type) {
328 default:
329 die("Bad type of menu_stuff when print menu");
330 case MENU_STUFF_TYPE_MENU_ITEM:
331 menu_item = (struct menu_item *)stuff->stuff;
332 for (i = 0; i < stuff->nr; i++, menu_item++) {
333 const char *p;
334 int highlighted = 0;
335
336 p = menu_item->title;
337 if ((*chosen)[i] < 0)
338 (*chosen)[i] = menu_item->selected ? 1 : 0;
339 strbuf_addf(&menu, "%s%2d: ", (*chosen)[i] ? "*" : " ", i+1);
340 for (; *p; p++) {
341 if (!highlighted && *p == menu_item->hotkey) {
342 strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_PROMPT));
343 strbuf_addch(&menu, *p);
344 strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_RESET));
345 highlighted = 1;
346 } else {
347 strbuf_addch(&menu, *p);
348 }
349 }
350 string_list_append(&menu_list, menu.buf);
351 strbuf_reset(&menu);
352 }
353 break;
354 case MENU_STUFF_TYPE_STRING_LIST:
355 i = 0;
356 for_each_string_list_item(string_list_item, (struct string_list *)stuff->stuff) {
357 if ((*chosen)[i] < 0)
358 (*chosen)[i] = 0;
359 strbuf_addf(&menu, "%s%2d: %s",
360 (*chosen)[i] ? "*" : " ", i+1, string_list_item->string);
361 string_list_append(&menu_list, menu.buf);
362 strbuf_reset(&menu);
363 i++;
364 }
365 break;
366 }
367
368 pretty_print_menus(&menu_list);
369
370 strbuf_release(&menu);
371 string_list_clear(&menu_list, 0);
372 }
373
374 static int find_unique(const char *choice, struct menu_stuff *menu_stuff)
375 {
376 struct menu_item *menu_item;
377 struct string_list_item *string_list_item;
378 int i, len, found = 0;
379
380 len = strlen(choice);
381 switch (menu_stuff->type) {
382 default:
383 die("Bad type of menu_stuff when parse choice");
384 case MENU_STUFF_TYPE_MENU_ITEM:
385
386 menu_item = (struct menu_item *)menu_stuff->stuff;
387 for (i = 0; i < menu_stuff->nr; i++, menu_item++) {
388 if (len == 1 && *choice == menu_item->hotkey) {
389 found = i + 1;
390 break;
391 }
392 if (!strncasecmp(choice, menu_item->title, len)) {
393 if (found) {
394 if (len == 1) {
395 /* continue for hotkey matching */
396 found = -1;
397 } else {
398 found = 0;
399 break;
400 }
401 } else {
402 found = i + 1;
403 }
404 }
405 }
406 break;
407 case MENU_STUFF_TYPE_STRING_LIST:
408 string_list_item = ((struct string_list *)menu_stuff->stuff)->items;
409 for (i = 0; i < menu_stuff->nr; i++, string_list_item++) {
410 if (!strncasecmp(choice, string_list_item->string, len)) {
411 if (found) {
412 found = 0;
413 break;
414 }
415 found = i + 1;
416 }
417 }
418 break;
419 }
420 return found;
421 }
422
423
424 /*
425 * Parse user input, and return choice(s) for menu (menu_stuff).
426 *
427 * Input
428 * (for single choice)
429 * 1 - select a numbered item
430 * foo - select item based on menu title
431 * - (empty) select nothing
432 *
433 * (for multiple choice)
434 * 1 - select a single item
435 * 3-5 - select a range of items
436 * 2-3,6-9 - select multiple ranges
437 * foo - select item based on menu title
438 * -... - unselect specified items
439 * * - choose all items
440 * - (empty) finish selecting
441 *
442 * The parse result will be saved in array **chosen, and
443 * return number of total selections.
444 */
445 static int parse_choice(struct menu_stuff *menu_stuff,
446 int is_single,
447 struct strbuf input,
448 int **chosen)
449 {
450 struct strbuf **choice_list, **ptr;
451 int nr = 0;
452 int i;
453
454 if (is_single) {
455 choice_list = strbuf_split_max(&input, '\n', 0);
456 } else {
457 char *p = input.buf;
458 do {
459 if (*p == ',')
460 *p = ' ';
461 } while (*p++);
462 choice_list = strbuf_split_max(&input, ' ', 0);
463 }
464
465 for (ptr = choice_list; *ptr; ptr++) {
466 char *p;
467 int choose = 1;
468 int bottom = 0, top = 0;
469 int is_range, is_number;
470
471 strbuf_trim(*ptr);
472 if (!(*ptr)->len)
473 continue;
474
475 /* Input that begins with '-'; unchoose */
476 if (*(*ptr)->buf == '-') {
477 choose = 0;
478 strbuf_remove((*ptr), 0, 1);
479 }
480
481 is_range = 0;
482 is_number = 1;
483 for (p = (*ptr)->buf; *p; p++) {
484 if ('-' == *p) {
485 if (!is_range) {
486 is_range = 1;
487 is_number = 0;
488 } else {
489 is_number = 0;
490 is_range = 0;
491 break;
492 }
493 } else if (!isdigit(*p)) {
494 is_number = 0;
495 is_range = 0;
496 break;
497 }
498 }
499
500 if (is_number) {
501 bottom = atoi((*ptr)->buf);
502 top = bottom;
503 } else if (is_range) {
504 bottom = atoi((*ptr)->buf);
505 /* a range can be specified like 5-7 or 5- */
506 if (!*(strchr((*ptr)->buf, '-') + 1))
507 top = menu_stuff->nr;
508 else
509 top = atoi(strchr((*ptr)->buf, '-') + 1);
510 } else if (!strcmp((*ptr)->buf, "*")) {
511 bottom = 1;
512 top = menu_stuff->nr;
513 } else {
514 bottom = find_unique((*ptr)->buf, menu_stuff);
515 top = bottom;
516 }
517
518 if (top <= 0 || bottom <= 0 || top > menu_stuff->nr || bottom > top ||
519 (is_single && bottom != top)) {
520 clean_print_color(CLEAN_COLOR_ERROR);
521 printf(_("Huh (%s)?\n"), (*ptr)->buf);
522 clean_print_color(CLEAN_COLOR_RESET);
523 continue;
524 }
525
526 for (i = bottom; i <= top; i++)
527 (*chosen)[i-1] = choose;
528 }
529
530 strbuf_list_free(choice_list);
531
532 for (i = 0; i < menu_stuff->nr; i++)
533 nr += (*chosen)[i];
534 return nr;
535 }
536
537 /*
538 * Implement a git-add-interactive compatible UI, which is borrowed
539 * from git-add--interactive.perl.
540 *
541 * Return value:
542 *
543 * - Return an array of integers
544 * - , and it is up to you to free the allocated memory.
545 * - The array ends with EOF.
546 * - If user pressed CTRL-D (i.e. EOF), no selection returned.
547 */
548 static int *list_and_choose(struct menu_opts *opts, struct menu_stuff *stuff)
549 {
550 struct strbuf choice = STRBUF_INIT;
551 int *chosen, *result;
552 int nr = 0;
553 int eof = 0;
554 int i;
555
556 ALLOC_ARRAY(chosen, stuff->nr);
557 /* set chosen as uninitialized */
558 for (i = 0; i < stuff->nr; i++)
559 chosen[i] = -1;
560
561 for (;;) {
562 if (opts->header) {
563 printf_ln("%s%s%s",
564 clean_get_color(CLEAN_COLOR_HEADER),
565 _(opts->header),
566 clean_get_color(CLEAN_COLOR_RESET));
567 }
568
569 /* chosen will be initialized by print_highlight_menu_stuff */
570 print_highlight_menu_stuff(stuff, &chosen);
571
572 if (opts->flags & MENU_OPTS_LIST_ONLY)
573 break;
574
575 if (opts->prompt) {
576 printf("%s%s%s%s",
577 clean_get_color(CLEAN_COLOR_PROMPT),
578 _(opts->prompt),
579 opts->flags & MENU_OPTS_SINGLETON ? "> " : ">> ",
580 clean_get_color(CLEAN_COLOR_RESET));
581 }
582
583 if (strbuf_getline_lf(&choice, stdin) != EOF) {
584 strbuf_trim(&choice);
585 } else {
586 eof = 1;
587 break;
588 }
589
590 /* help for prompt */
591 if (!strcmp(choice.buf, "?")) {
592 prompt_help_cmd(opts->flags & MENU_OPTS_SINGLETON);
593 continue;
594 }
595
596 /* for a multiple-choice menu, press ENTER (empty) will return back */
597 if (!(opts->flags & MENU_OPTS_SINGLETON) && !choice.len)
598 break;
599
600 nr = parse_choice(stuff,
601 opts->flags & MENU_OPTS_SINGLETON,
602 choice,
603 &chosen);
604
605 if (opts->flags & MENU_OPTS_SINGLETON) {
606 if (nr)
607 break;
608 } else if (opts->flags & MENU_OPTS_IMMEDIATE) {
609 break;
610 }
611 }
612
613 if (eof) {
614 result = xmalloc(sizeof(int));
615 *result = EOF;
616 } else {
617 int j = 0;
618
619 /*
620 * recalculate nr, if return back from menu directly with
621 * default selections.
622 */
623 if (!nr) {
624 for (i = 0; i < stuff->nr; i++)
625 nr += chosen[i];
626 }
627
628 result = xcalloc(st_add(nr, 1), sizeof(int));
629 for (i = 0; i < stuff->nr && j < nr; i++) {
630 if (chosen[i])
631 result[j++] = i;
632 }
633 result[j] = EOF;
634 }
635
636 free(chosen);
637 strbuf_release(&choice);
638 return result;
639 }
640
641 static int clean_cmd(void)
642 {
643 return MENU_RETURN_NO_LOOP;
644 }
645
646 static int filter_by_patterns_cmd(void)
647 {
648 struct dir_struct dir;
649 struct strbuf confirm = STRBUF_INIT;
650 struct strbuf **ignore_list;
651 struct string_list_item *item;
652 struct exclude_list *el;
653 int changed = -1, i;
654
655 for (;;) {
656 if (!del_list.nr)
657 break;
658
659 if (changed)
660 pretty_print_dels();
661
662 clean_print_color(CLEAN_COLOR_PROMPT);
663 printf(_("Input ignore patterns>> "));
664 clean_print_color(CLEAN_COLOR_RESET);
665 if (strbuf_getline_lf(&confirm, stdin) != EOF)
666 strbuf_trim(&confirm);
667 else
668 putchar('\n');
669
670 /* quit filter_by_pattern mode if press ENTER or Ctrl-D */
671 if (!confirm.len)
672 break;
673
674 memset(&dir, 0, sizeof(dir));
675 el = add_exclude_list(&dir, EXC_CMDL, "manual exclude");
676 ignore_list = strbuf_split_max(&confirm, ' ', 0);
677
678 for (i = 0; ignore_list[i]; i++) {
679 strbuf_trim(ignore_list[i]);
680 if (!ignore_list[i]->len)
681 continue;
682
683 add_exclude(ignore_list[i]->buf, "", 0, el, -(i+1));
684 }
685
686 changed = 0;
687 for_each_string_list_item(item, &del_list) {
688 int dtype = DT_UNKNOWN;
689
690 if (is_excluded(&dir, &the_index, item->string, &dtype)) {
691 *item->string = '\0';
692 changed++;
693 }
694 }
695
696 if (changed) {
697 string_list_remove_empty_items(&del_list, 0);
698 } else {
699 clean_print_color(CLEAN_COLOR_ERROR);
700 printf_ln(_("WARNING: Cannot find items matched by: %s"), confirm.buf);
701 clean_print_color(CLEAN_COLOR_RESET);
702 }
703
704 strbuf_list_free(ignore_list);
705 clear_directory(&dir);
706 }
707
708 strbuf_release(&confirm);
709 return 0;
710 }
711
712 static int select_by_numbers_cmd(void)
713 {
714 struct menu_opts menu_opts;
715 struct menu_stuff menu_stuff;
716 struct string_list_item *items;
717 int *chosen;
718 int i, j;
719
720 menu_opts.header = NULL;
721 menu_opts.prompt = N_("Select items to delete");
722 menu_opts.flags = 0;
723
724 menu_stuff.type = MENU_STUFF_TYPE_STRING_LIST;
725 menu_stuff.stuff = &del_list;
726 menu_stuff.nr = del_list.nr;
727
728 chosen = list_and_choose(&menu_opts, &menu_stuff);
729 items = del_list.items;
730 for (i = 0, j = 0; i < del_list.nr; i++) {
731 if (i < chosen[j]) {
732 *(items[i].string) = '\0';
733 } else if (i == chosen[j]) {
734 /* delete selected item */
735 j++;
736 continue;
737 } else {
738 /* end of chosen (chosen[j] == EOF), won't delete */
739 *(items[i].string) = '\0';
740 }
741 }
742
743 string_list_remove_empty_items(&del_list, 0);
744
745 free(chosen);
746 return 0;
747 }
748
749 static int ask_each_cmd(void)
750 {
751 struct strbuf confirm = STRBUF_INIT;
752 struct strbuf buf = STRBUF_INIT;
753 struct string_list_item *item;
754 const char *qname;
755 int changed = 0, eof = 0;
756
757 for_each_string_list_item(item, &del_list) {
758 /* Ctrl-D should stop removing files */
759 if (!eof) {
760 qname = quote_path_relative(item->string, NULL, &buf);
761 /* TRANSLATORS: Make sure to keep [y/N] as is */
762 printf(_("Remove %s [y/N]? "), qname);
763 if (strbuf_getline_lf(&confirm, stdin) != EOF) {
764 strbuf_trim(&confirm);
765 } else {
766 putchar('\n');
767 eof = 1;
768 }
769 }
770 if (!confirm.len || strncasecmp(confirm.buf, "yes", confirm.len)) {
771 *item->string = '\0';
772 changed++;
773 }
774 }
775
776 if (changed)
777 string_list_remove_empty_items(&del_list, 0);
778
779 strbuf_release(&buf);
780 strbuf_release(&confirm);
781 return MENU_RETURN_NO_LOOP;
782 }
783
784 static int quit_cmd(void)
785 {
786 string_list_clear(&del_list, 0);
787 printf(_("Bye.\n"));
788 return MENU_RETURN_NO_LOOP;
789 }
790
791 static int help_cmd(void)
792 {
793 clean_print_color(CLEAN_COLOR_HELP);
794 printf_ln(_(
795 "clean - start cleaning\n"
796 "filter by pattern - exclude items from deletion\n"
797 "select by numbers - select items to be deleted by numbers\n"
798 "ask each - confirm each deletion (like \"rm -i\")\n"
799 "quit - stop cleaning\n"
800 "help - this screen\n"
801 "? - help for prompt selection"
802 ));
803 clean_print_color(CLEAN_COLOR_RESET);
804 return 0;
805 }
806
807 static void interactive_main_loop(void)
808 {
809 while (del_list.nr) {
810 struct menu_opts menu_opts;
811 struct menu_stuff menu_stuff;
812 struct menu_item menus[] = {
813 {'c', "clean", 0, clean_cmd},
814 {'f', "filter by pattern", 0, filter_by_patterns_cmd},
815 {'s', "select by numbers", 0, select_by_numbers_cmd},
816 {'a', "ask each", 0, ask_each_cmd},
817 {'q', "quit", 0, quit_cmd},
818 {'h', "help", 0, help_cmd},
819 };
820 int *chosen;
821
822 menu_opts.header = N_("*** Commands ***");
823 menu_opts.prompt = N_("What now");
824 menu_opts.flags = MENU_OPTS_SINGLETON;
825
826 menu_stuff.type = MENU_STUFF_TYPE_MENU_ITEM;
827 menu_stuff.stuff = menus;
828 menu_stuff.nr = sizeof(menus) / sizeof(struct menu_item);
829
830 clean_print_color(CLEAN_COLOR_HEADER);
831 printf_ln(Q_("Would remove the following item:",
832 "Would remove the following items:",
833 del_list.nr));
834 clean_print_color(CLEAN_COLOR_RESET);
835
836 pretty_print_dels();
837
838 chosen = list_and_choose(&menu_opts, &menu_stuff);
839
840 if (*chosen != EOF) {
841 int ret;
842 ret = menus[*chosen].fn();
843 if (ret != MENU_RETURN_NO_LOOP) {
844 FREE_AND_NULL(chosen);
845 if (!del_list.nr) {
846 clean_print_color(CLEAN_COLOR_ERROR);
847 printf_ln(_("No more files to clean, exiting."));
848 clean_print_color(CLEAN_COLOR_RESET);
849 break;
850 }
851 continue;
852 }
853 } else {
854 quit_cmd();
855 }
856
857 FREE_AND_NULL(chosen);
858 break;
859 }
860 }
861
862 static void correct_untracked_entries(struct dir_struct *dir)
863 {
864 int src, dst, ign;
865
866 for (src = dst = ign = 0; src < dir->nr; src++) {
867 /* skip paths in ignored[] that cannot be inside entries[src] */
868 while (ign < dir->ignored_nr &&
869 0 <= cmp_dir_entry(&dir->entries[src], &dir->ignored[ign]))
870 ign++;
871
872 if (ign < dir->ignored_nr &&
873 check_dir_entry_contains(dir->entries[src], dir->ignored[ign])) {
874 /* entries[src] contains an ignored path, so we drop it */
875 free(dir->entries[src]);
876 } else {
877 struct dir_entry *ent = dir->entries[src++];
878
879 /* entries[src] does not contain an ignored path, so we keep it */
880 dir->entries[dst++] = ent;
881
882 /* then discard paths in entries[] contained inside entries[src] */
883 while (src < dir->nr &&
884 check_dir_entry_contains(ent, dir->entries[src]))
885 free(dir->entries[src++]);
886
887 /* compensate for the outer loop's loop control */
888 src--;
889 }
890 }
891 dir->nr = dst;
892 }
893
894 int cmd_clean(int argc, const char **argv, const char *prefix)
895 {
896 int i, res;
897 int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
898 int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
899 int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
900 struct strbuf abs_path = STRBUF_INIT;
901 struct dir_struct dir;
902 struct pathspec pathspec;
903 struct strbuf buf = STRBUF_INIT;
904 struct string_list exclude_list = STRING_LIST_INIT_NODUP;
905 struct exclude_list *el;
906 struct string_list_item *item;
907 const char *qname;
908 struct option options[] = {
909 OPT__QUIET(&quiet, N_("do not print names of files removed")),
910 OPT__DRY_RUN(&dry_run, N_("dry run")),
911 OPT__FORCE(&force, N_("force")),
912 OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
913 OPT_BOOL('d', NULL, &remove_directories,
914 N_("remove whole directories")),
915 { OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
916 N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
917 OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
918 OPT_BOOL('X', NULL, &ignored_only,
919 N_("remove only ignored files")),
920 OPT_END()
921 };
922
923 git_config(git_clean_config, NULL);
924 if (force < 0)
925 force = 0;
926 else
927 config_set = 1;
928
929 argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
930 0);
931
932 memset(&dir, 0, sizeof(dir));
933 if (ignored_only)
934 dir.flags |= DIR_SHOW_IGNORED;
935
936 if (ignored && ignored_only)
937 die(_("-x and -X cannot be used together"));
938
939 if (!interactive && !dry_run && !force) {
940 if (config_set)
941 die(_("clean.requireForce set to true and neither -i, -n, nor -f given; "
942 "refusing to clean"));
943 else
944 die(_("clean.requireForce defaults to true and neither -i, -n, nor -f given;"
945 " refusing to clean"));
946 }
947
948 if (force > 1)
949 rm_flags = 0;
950
951 dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
952
953 if (remove_directories)
954 dir.flags |= DIR_SHOW_IGNORED_TOO | DIR_KEEP_UNTRACKED_CONTENTS;
955
956 if (read_cache() < 0)
957 die(_("index file corrupt"));
958
959 if (!ignored)
960 setup_standard_excludes(&dir);
961
962 el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
963 for (i = 0; i < exclude_list.nr; i++)
964 add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
965
966 parse_pathspec(&pathspec, 0,
967 PATHSPEC_PREFER_CWD,
968 prefix, argv);
969
970 fill_directory(&dir, &the_index, &pathspec);
971 correct_untracked_entries(&dir);
972
973 for (i = 0; i < dir.nr; i++) {
974 struct dir_entry *ent = dir.entries[i];
975 int matches = 0;
976 struct stat st;
977 const char *rel;
978
979 if (!cache_name_is_other(ent->name, ent->len))
980 continue;
981
982 if (pathspec.nr)
983 matches = dir_path_match(ent, &pathspec, 0, NULL);
984
985 if (pathspec.nr && !matches)
986 continue;
987
988 if (lstat(ent->name, &st))
989 die_errno("Cannot lstat '%s'", ent->name);
990
991 if (S_ISDIR(st.st_mode) && !remove_directories &&
992 matches != MATCHED_EXACTLY)
993 continue;
994
995 rel = relative_path(ent->name, prefix, &buf);
996 string_list_append(&del_list, rel);
997 }
998
999 for (i = 0; i < dir.nr; i++)
1000 free(dir.entries[i]);
1001
1002 for (i = 0; i < dir.ignored_nr; i++)
1003 free(dir.ignored[i]);
1004
1005 if (interactive && del_list.nr > 0)
1006 interactive_main_loop();
1007
1008 for_each_string_list_item(item, &del_list) {
1009 struct stat st;
1010
1011 if (prefix)
1012 strbuf_addstr(&abs_path, prefix);
1013
1014 strbuf_addstr(&abs_path, item->string);
1015
1016 /*
1017 * we might have removed this as part of earlier
1018 * recursive directory removal, so lstat() here could
1019 * fail with ENOENT.
1020 */
1021 if (lstat(abs_path.buf, &st))
1022 continue;
1023
1024 if (S_ISDIR(st.st_mode)) {
1025 if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
1026 errors++;
1027 if (gone && !quiet) {
1028 qname = quote_path_relative(item->string, NULL, &buf);
1029 printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
1030 }
1031 } else {
1032 res = dry_run ? 0 : unlink(abs_path.buf);
1033 if (res) {
1034 int saved_errno = errno;
1035 qname = quote_path_relative(item->string, NULL, &buf);
1036 errno = saved_errno;
1037 warning_errno(_(msg_warn_remove_failed), qname);
1038 errors++;
1039 } else if (!quiet) {
1040 qname = quote_path_relative(item->string, NULL, &buf);
1041 printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
1042 }
1043 }
1044 strbuf_reset(&abs_path);
1045 }
1046
1047 strbuf_release(&abs_path);
1048 strbuf_release(&buf);
1049 string_list_clear(&del_list, 0);
1050 string_list_clear(&exclude_list, 0);
1051 return (errors != 0);
1052 }
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