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