git.oblomov.eu Git - git/blob - 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 }