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