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)(void);
  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         const char *slot_name;
 104
 105         if (starts_with(var, "column."))
 106                 return git_column_config(var, value, "clean", &colopts);
 107
 108         /* honors the color.interactive* config variables which also
 109            applied in git-add--interactive and git-stash */
 110         if (!strcmp(var, "color.interactive")) {
 111                 clean_use_color = git_config_colorbool(var, value);
 112                 return 0;
 113         }
 114         if (skip_prefix(var, "color.interactive.", &slot_name)) {
 115                 int slot = parse_clean_color_slot(slot_name);
 116                 if (slot < 0)
 117                         return 0;
 118                 if (!value)
 119                         return config_error_nonbool(var);
 120                 return color_parse(value, clean_colors[slot]);
 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 menu_item *menu_item;
 318         struct string_list_item *string_list_item;
 319         int i;
 320
 321         switch (stuff->type) {
 322         default:
 323                 die("Bad type of menu_stuff when print menu");
 324         case MENU_STUFF_TYPE_MENU_ITEM:
 325                 menu_item = (struct menu_item *)stuff->stuff;
 326                 for (i = 0; i < stuff->nr; i++, menu_item++) {
 327                         const char *p;
 328                         int highlighted = 0;
 329
 330                         p = menu_item->title;
 331                         if ((*chosen)[i] < 0)
 332                                 (*chosen)[i] = menu_item->selected ? 1 : 0;
 333                         strbuf_addf(&menu, "%s%2d: ", (*chosen)[i] ? "*" : " ", i+1);
 334                         for (; *p; p++) {
 335                                 if (!highlighted && *p == menu_item->hotkey) {
 336                                         strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_PROMPT));
 337                                         strbuf_addch(&menu, *p);
 338                                         strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_RESET));
 339                                         highlighted = 1;
 340                                 } else {
 341                                         strbuf_addch(&menu, *p);
 342                                 }
 343                         }
 344                         string_list_append(&menu_list, menu.buf);
 345                         strbuf_reset(&menu);
 346                 }
 347                 break;
 348         case MENU_STUFF_TYPE_STRING_LIST:
 349                 i = 0;
 350                 for_each_string_list_item(string_list_item, (struct string_list *)stuff->stuff) {
 351                         if ((*chosen)[i] < 0)
 352                                 (*chosen)[i] = 0;
 353                         strbuf_addf(&menu, "%s%2d: %s",
 354                                     (*chosen)[i] ? "*" : " ", i+1, string_list_item->string);
 355                         string_list_append(&menu_list, menu.buf);
 356                         strbuf_reset(&menu);
 357                         i++;
 358                 }
 359                 break;
 360         }
 361
 362         pretty_print_menus(&menu_list);
 363
 364         strbuf_release(&menu);
 365         string_list_clear(&menu_list, 0);
 366 }
 367
 368 static int find_unique(const char *choice, struct menu_stuff *menu_stuff)
 369 {
 370         struct menu_item *menu_item;
 371         struct string_list_item *string_list_item;
 372         int i, len, found = 0;
 373
 374         len = strlen(choice);
 375         switch (menu_stuff->type) {
 376         default:
 377                 die("Bad type of menu_stuff when parse choice");
 378         case MENU_STUFF_TYPE_MENU_ITEM:
 379
 380                 menu_item = (struct menu_item *)menu_stuff->stuff;
 381                 for (i = 0; i < menu_stuff->nr; i++, menu_item++) {
 382                         if (len == 1 && *choice == menu_item->hotkey) {
 383                                 found = i + 1;
 384                                 break;
 385                         }
 386                         if (!strncasecmp(choice, menu_item->title, len)) {
 387                                 if (found) {
 388                                         if (len == 1) {
 389                                                 /* continue for hotkey matching */
 390                                                 found = -1;
 391                                         } else {
 392                                                 found = 0;
 393                                                 break;
 394                                         }
 395                                 } else {
 396                                         found = i + 1;
 397                                 }
 398                         }
 399                 }
 400                 break;
 401         case MENU_STUFF_TYPE_STRING_LIST:
 402                 string_list_item = ((struct string_list *)menu_stuff->stuff)->items;
 403                 for (i = 0; i < menu_stuff->nr; i++, string_list_item++) {
 404                         if (!strncasecmp(choice, string_list_item->string, len)) {
 405                                 if (found) {
 406                                         found = 0;
 407                                         break;
 408                                 }
 409                                 found = i + 1;
 410                         }
 411                 }
 412                 break;
 413         }
 414         return found;
 415 }
 416
 417
 418 /*
 419  * Parse user input, and return choice(s) for menu (menu_stuff).
 420  *
 421  * Input
 422  *     (for single choice)
 423  *         1          - select a numbered item
 424  *         foo        - select item based on menu title
 425  *                    - (empty) select nothing
 426  *
 427  *     (for multiple choice)
 428  *         1          - select a single item
 429  *         3-5        - select a range of items
 430  *         2-3,6-9    - select multiple ranges
 431  *         foo        - select item based on menu title
 432  *         -...       - unselect specified items
 433  *         *          - choose all items
 434  *                    - (empty) finish selecting
 435  *
 436  * The parse result will be saved in array **chosen, and
 437  * return number of total selections.
 438  */
 439 static int parse_choice(struct menu_stuff *menu_stuff,
 440                         int is_single,
 441                         struct strbuf input,
 442                         int **chosen)
 443 {
 444         struct strbuf **choice_list, **ptr;
 445         int nr = 0;
 446         int i;
 447
 448         if (is_single) {
 449                 choice_list = strbuf_split_max(&input, '\n', 0);
 450         } else {
 451                 char *p = input.buf;
 452                 do {
 453                         if (*p == ',')
 454                                 *p = ' ';
 455                 } while (*p++);
 456                 choice_list = strbuf_split_max(&input, ' ', 0);
 457         }
 458
 459         for (ptr = choice_list; *ptr; ptr++) {
 460                 char *p;
 461                 int choose = 1;
 462                 int bottom = 0, top = 0;
 463                 int is_range, is_number;
 464
 465                 strbuf_trim(*ptr);
 466                 if (!(*ptr)->len)
 467                         continue;
 468
 469                 /* Input that begins with '-'; unchoose */
 470                 if (*(*ptr)->buf == '-') {
 471                         choose = 0;
 472                         strbuf_remove((*ptr), 0, 1);
 473                 }
 474
 475                 is_range = 0;
 476                 is_number = 1;
 477                 for (p = (*ptr)->buf; *p; p++) {
 478                         if ('-' == *p) {
 479                                 if (!is_range) {
 480                                         is_range = 1;
 481                                         is_number = 0;
 482                                 } else {
 483                                         is_number = 0;
 484                                         is_range = 0;
 485                                         break;
 486                                 }
 487                         } else if (!isdigit(*p)) {
 488                                 is_number = 0;
 489                                 is_range = 0;
 490                                 break;
 491                         }
 492                 }
 493
 494                 if (is_number) {
 495                         bottom = atoi((*ptr)->buf);
 496                         top = bottom;
 497                 } else if (is_range) {
 498                         bottom = atoi((*ptr)->buf);
 499                         /* a range can be specified like 5-7 or 5- */
 500                         if (!*(strchr((*ptr)->buf, '-') + 1))
 501                                 top = menu_stuff->nr;
 502                         else
 503                                 top = atoi(strchr((*ptr)->buf, '-') + 1);
 504                 } else if (!strcmp((*ptr)->buf, "*")) {
 505                         bottom = 1;
 506                         top = menu_stuff->nr;
 507                 } else {
 508                         bottom = find_unique((*ptr)->buf, menu_stuff);
 509                         top = bottom;
 510                 }
 511
 512                 if (top <= 0 || bottom <= 0 || top > menu_stuff->nr || bottom > top ||
 513                     (is_single && bottom != top)) {
 514                         clean_print_color(CLEAN_COLOR_ERROR);
 515                         printf_ln(_("Huh (%s)?"), (*ptr)->buf);
 516                         clean_print_color(CLEAN_COLOR_RESET);
 517                         continue;
 518                 }
 519
 520                 for (i = bottom; i <= top; i++)
 521                         (*chosen)[i-1] = choose;
 522         }
 523
 524         strbuf_list_free(choice_list);
 525
 526         for (i = 0; i < menu_stuff->nr; i++)
 527                 nr += (*chosen)[i];
 528         return nr;
 529 }
 530
 531 /*
 532  * Implement a git-add-interactive compatible UI, which is borrowed
 533  * from git-add--interactive.perl.
 534  *
 535  * Return value:
 536  *
 537  *   - Return an array of integers
 538  *   - , and it is up to you to free the allocated memory.
 539  *   - The array ends with EOF.
 540  *   - If user pressed CTRL-D (i.e. EOF), no selection returned.
 541  */
 542 static int *list_and_choose(struct menu_opts *opts, struct menu_stuff *stuff)
 543 {
 544         struct strbuf choice = STRBUF_INIT;
 545         int *chosen, *result;
 546         int nr = 0;
 547         int eof = 0;
 548         int i;
 549
 550         chosen = xmalloc(sizeof(int) * stuff->nr);
 551         /* set chosen as uninitialized */
 552         for (i = 0; i < stuff->nr; i++)
 553                 chosen[i] = -1;
 554
 555         for (;;) {
 556                 if (opts->header) {
 557                         printf_ln("%s%s%s",
 558                                   clean_get_color(CLEAN_COLOR_HEADER),
 559                                   _(opts->header),
 560                                   clean_get_color(CLEAN_COLOR_RESET));
 561                 }
 562
 563                 /* chosen will be initialized by print_highlight_menu_stuff */
 564                 print_highlight_menu_stuff(stuff, &chosen);
 565
 566                 if (opts->flags & MENU_OPTS_LIST_ONLY)
 567                         break;
 568
 569                 if (opts->prompt) {
 570                         printf("%s%s%s%s",
 571                                clean_get_color(CLEAN_COLOR_PROMPT),
 572                                _(opts->prompt),
 573                                opts->flags & MENU_OPTS_SINGLETON ? "> " : ">> ",
 574                                clean_get_color(CLEAN_COLOR_RESET));
 575                 }
 576
 577                 if (strbuf_getline(&choice, stdin, '\n') != EOF) {
 578                         strbuf_trim(&choice);
 579                 } else {
 580                         eof = 1;
 581                         break;
 582                 }
 583
 584                 /* help for prompt */
 585                 if (!strcmp(choice.buf, "?")) {
 586                         prompt_help_cmd(opts->flags & MENU_OPTS_SINGLETON);
 587                         continue;
 588                 }
 589
 590                 /* for a multiple-choice menu, press ENTER (empty) will return back */
 591                 if (!(opts->flags & MENU_OPTS_SINGLETON) && !choice.len)
 592                         break;
 593
 594                 nr = parse_choice(stuff,
 595                                   opts->flags & MENU_OPTS_SINGLETON,
 596                                   choice,
 597                                   &chosen);
 598
 599                 if (opts->flags & MENU_OPTS_SINGLETON) {
 600                         if (nr)
 601                                 break;
 602                 } else if (opts->flags & MENU_OPTS_IMMEDIATE) {
 603                         break;
 604                 }
 605         }
 606
 607         if (eof) {
 608                 result = xmalloc(sizeof(int));
 609                 *result = EOF;
 610         } else {
 611                 int j = 0;
 612
 613                 /*
 614                  * recalculate nr, if return back from menu directly with
 615                  * default selections.
 616                  */
 617                 if (!nr) {
 618                         for (i = 0; i < stuff->nr; i++)
 619                                 nr += chosen[i];
 620                 }
 621
 622                 result = xcalloc(nr + 1, sizeof(int));
 623                 for (i = 0; i < stuff->nr && j < nr; i++) {
 624                         if (chosen[i])
 625                                 result[j++] = i;
 626                 }
 627                 result[j] = EOF;
 628         }
 629
 630         free(chosen);
 631         strbuf_release(&choice);
 632         return result;
 633 }
 634
 635 static int clean_cmd(void)
 636 {
 637         return MENU_RETURN_NO_LOOP;
 638 }
 639
 640 static int filter_by_patterns_cmd(void)
 641 {
 642         struct dir_struct dir;
 643         struct strbuf confirm = STRBUF_INIT;
 644         struct strbuf **ignore_list;
 645         struct string_list_item *item;
 646         struct exclude_list *el;
 647         int changed = -1, i;
 648
 649         for (;;) {
 650                 if (!del_list.nr)
 651                         break;
 652
 653                 if (changed)
 654                         pretty_print_dels();
 655
 656                 clean_print_color(CLEAN_COLOR_PROMPT);
 657                 printf(_("Input ignore patterns>> "));
 658                 clean_print_color(CLEAN_COLOR_RESET);
 659                 if (strbuf_getline(&confirm, stdin, '\n') != EOF)
 660                         strbuf_trim(&confirm);
 661                 else
 662                         putchar('\n');
 663
 664                 /* quit filter_by_pattern mode if press ENTER or Ctrl-D */
 665                 if (!confirm.len)
 666                         break;
 667
 668                 memset(&dir, 0, sizeof(dir));
 669                 el = add_exclude_list(&dir, EXC_CMDL, "manual exclude");
 670                 ignore_list = strbuf_split_max(&confirm, ' ', 0);
 671
 672                 for (i = 0; ignore_list[i]; i++) {
 673                         strbuf_trim(ignore_list[i]);
 674                         if (!ignore_list[i]->len)
 675                                 continue;
 676
 677                         add_exclude(ignore_list[i]->buf, "", 0, el, -(i+1));
 678                 }
 679
 680                 changed = 0;
 681                 for_each_string_list_item(item, &del_list) {
 682                         int dtype = DT_UNKNOWN;
 683
 684                         if (is_excluded(&dir, item->string, &dtype)) {
 685                                 *item->string = '\0';
 686                                 changed++;
 687                         }
 688                 }
 689
 690                 if (changed) {
 691                         string_list_remove_empty_items(&del_list, 0);
 692                 } else {
 693                         clean_print_color(CLEAN_COLOR_ERROR);
 694                         printf_ln(_("WARNING: Cannot find items matched by: %s"), confirm.buf);
 695                         clean_print_color(CLEAN_COLOR_RESET);
 696                 }
 697
 698                 strbuf_list_free(ignore_list);
 699                 clear_directory(&dir);
 700         }
 701
 702         strbuf_release(&confirm);
 703         return 0;
 704 }
 705
 706 static int select_by_numbers_cmd(void)
 707 {
 708         struct menu_opts menu_opts;
 709         struct menu_stuff menu_stuff;
 710         struct string_list_item *items;
 711         int *chosen;
 712         int i, j;
 713
 714         menu_opts.header = NULL;
 715         menu_opts.prompt = N_("Select items to delete");
 716         menu_opts.flags = 0;
 717
 718         menu_stuff.type = MENU_STUFF_TYPE_STRING_LIST;
 719         menu_stuff.stuff = &del_list;
 720         menu_stuff.nr = del_list.nr;
 721
 722         chosen = list_and_choose(&menu_opts, &menu_stuff);
 723         items = del_list.items;
 724         for (i = 0, j = 0; i < del_list.nr; i++) {
 725                 if (i < chosen[j]) {
 726                         *(items[i].string) = '\0';
 727                 } else if (i == chosen[j]) {
 728                         /* delete selected item */
 729                         j++;
 730                         continue;
 731                 } else {
 732                         /* end of chosen (chosen[j] == EOF), won't delete */
 733                         *(items[i].string) = '\0';
 734                 }
 735         }
 736
 737         string_list_remove_empty_items(&del_list, 0);
 738
 739         free(chosen);
 740         return 0;
 741 }
 742
 743 static int ask_each_cmd(void)
 744 {
 745         struct strbuf confirm = STRBUF_INIT;
 746         struct strbuf buf = STRBUF_INIT;
 747         struct string_list_item *item;
 748         const char *qname;
 749         int changed = 0, eof = 0;
 750
 751         for_each_string_list_item(item, &del_list) {
 752                 /* Ctrl-D should stop removing files */
 753                 if (!eof) {
 754                         qname = quote_path_relative(item->string, NULL, &buf);
 755                         /* TRANSLATORS: Make sure to keep [y/N] as is */
 756                         printf(_("Remove %s [y/N]? "), qname);
 757                         if (strbuf_getline(&confirm, stdin, '\n') != EOF) {
 758                                 strbuf_trim(&confirm);
 759                         } else {
 760                                 putchar('\n');
 761                                 eof = 1;
 762                         }
 763                 }
 764                 if (!confirm.len || strncasecmp(confirm.buf, "yes", confirm.len)) {
 765                         *item->string = '\0';
 766                         changed++;
 767                 }
 768         }
 769
 770         if (changed)
 771                 string_list_remove_empty_items(&del_list, 0);
 772
 773         strbuf_release(&buf);
 774         strbuf_release(&confirm);
 775         return MENU_RETURN_NO_LOOP;
 776 }
 777
 778 static int quit_cmd(void)
 779 {
 780         string_list_clear(&del_list, 0);
 781         printf_ln(_("Bye."));
 782         return MENU_RETURN_NO_LOOP;
 783 }
 784
 785 static int help_cmd(void)
 786 {
 787         clean_print_color(CLEAN_COLOR_HELP);
 788         printf_ln(_(
 789                     "clean               - start cleaning\n"
 790                     "filter by pattern   - exclude items from deletion\n"
 791                     "select by numbers   - select items to be deleted by numbers\n"
 792                     "ask each            - confirm each deletion (like \"rm -i\")\n"
 793                     "quit                - stop cleaning\n"
 794                     "help                - this screen\n"
 795                     "?                   - help for prompt selection"
 796                    ));
 797         clean_print_color(CLEAN_COLOR_RESET);
 798         return 0;
 799 }
 800
 801 static void interactive_main_loop(void)
 802 {
 803         while (del_list.nr) {
 804                 struct menu_opts menu_opts;
 805                 struct menu_stuff menu_stuff;
 806                 struct menu_item menus[] = {
 807                         {'c', "clean",                  0, clean_cmd},
 808                         {'f', "filter by pattern",      0, filter_by_patterns_cmd},
 809                         {'s', "select by numbers",      0, select_by_numbers_cmd},
 810                         {'a', "ask each",               0, ask_each_cmd},
 811                         {'q', "quit",                   0, quit_cmd},
 812                         {'h', "help",                   0, help_cmd},
 813                 };
 814                 int *chosen;
 815
 816                 menu_opts.header = N_("*** Commands ***");
 817                 menu_opts.prompt = N_("What now");
 818                 menu_opts.flags = MENU_OPTS_SINGLETON;
 819
 820                 menu_stuff.type = MENU_STUFF_TYPE_MENU_ITEM;
 821                 menu_stuff.stuff = menus;
 822                 menu_stuff.nr = sizeof(menus) / sizeof(struct menu_item);
 823
 824                 clean_print_color(CLEAN_COLOR_HEADER);
 825                 printf_ln(Q_("Would remove the following item:",
 826                              "Would remove the following items:",
 827                              del_list.nr));
 828                 clean_print_color(CLEAN_COLOR_RESET);
 829
 830                 pretty_print_dels();
 831
 832                 chosen = list_and_choose(&menu_opts, &menu_stuff);
 833
 834                 if (*chosen != EOF) {
 835                         int ret;
 836                         ret = menus[*chosen].fn();
 837                         if (ret != MENU_RETURN_NO_LOOP) {
 838                                 free(chosen);
 839                                 chosen = NULL;
 840                                 if (!del_list.nr) {
 841                                         clean_print_color(CLEAN_COLOR_ERROR);
 842                                         printf_ln(_("No more files to clean, exiting."));
 843                                         clean_print_color(CLEAN_COLOR_RESET);
 844                                         break;
 845                                 }
 846                                 continue;
 847                         }
 848                 } else {
 849                         quit_cmd();
 850                 }
 851
 852                 free(chosen);
 853                 chosen = NULL;
 854                 break;
 855         }
 856 }
 857
 858 int cmd_clean(int argc, const char **argv, const char *prefix)
 859 {
 860         int i, res;
 861         int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
 862         int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
 863         int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
 864         struct strbuf abs_path = STRBUF_INIT;
 865         struct dir_struct dir;
 866         struct pathspec pathspec;
 867         struct strbuf buf = STRBUF_INIT;
 868         struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 869         struct exclude_list *el;
 870         struct string_list_item *item;
 871         const char *qname;
 872         struct option options[] = {
 873                 OPT__QUIET(&quiet, N_("do not print names of files removed")),
 874                 OPT__DRY_RUN(&dry_run, N_("dry run")),
 875                 OPT__FORCE(&force, N_("force")),
 876                 OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
 877                 OPT_BOOL('d', NULL, &remove_directories,
 878                                 N_("remove whole directories")),
 879                 { OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
 880                   N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
 881                 OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
 882                 OPT_BOOL('X', NULL, &ignored_only,
 883                                 N_("remove only ignored files")),
 884                 OPT_END()
 885         };
 886
 887         git_config(git_clean_config, NULL);
 888         if (force < 0)
 889                 force = 0;
 890         else
 891                 config_set = 1;
 892
 893         argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
 894                              0);
 895
 896         memset(&dir, 0, sizeof(dir));
 897         if (ignored_only)
 898                 dir.flags |= DIR_SHOW_IGNORED;
 899
 900         if (ignored && ignored_only)
 901                 die(_("-x and -X cannot be used together"));
 902
 903         if (!interactive && !dry_run && !force) {
 904                 if (config_set)
 905                         die(_("clean.requireForce set to true and neither -i, -n, nor -f given; "
 906                                   "refusing to clean"));
 907                 else
 908                         die(_("clean.requireForce defaults to true and neither -i, -n, nor -f given;"
 909                                   " refusing to clean"));
 910         }
 911
 912         if (force > 1)
 913                 rm_flags = 0;
 914
 915         dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
 916
 917         if (read_cache() < 0)
 918                 die(_("index file corrupt"));
 919
 920         if (!ignored)
 921                 setup_standard_excludes(&dir);
 922
 923         el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 924         for (i = 0; i < exclude_list.nr; i++)
 925                 add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
 926
 927         parse_pathspec(&pathspec, 0,
 928                        PATHSPEC_PREFER_CWD,
 929                        prefix, argv);
 930
 931         fill_directory(&dir, &pathspec);
 932
 933         for (i = 0; i < dir.nr; i++) {
 934                 struct dir_entry *ent = dir.entries[i];
 935                 int matches = 0;
 936                 struct stat st;
 937                 const char *rel;
 938
 939                 if (!cache_name_is_other(ent->name, ent->len))
 940                         continue;
 941
 942                 if (pathspec.nr)
 943                         matches = dir_path_match(ent, &pathspec, 0, NULL);
 944
 945                 if (pathspec.nr && !matches)
 946                         continue;
 947
 948                 if (lstat(ent->name, &st))
 949                         die_errno("Cannot lstat '%s'", ent->name);
 950
 951                 if (S_ISDIR(st.st_mode) && !remove_directories &&
 952                     matches != MATCHED_EXACTLY)
 953                         continue;
 954
 955                 rel = relative_path(ent->name, prefix, &buf);
 956                 string_list_append(&del_list, rel);
 957         }
 958
 959         if (interactive && del_list.nr > 0)
 960                 interactive_main_loop();
 961
 962         for_each_string_list_item(item, &del_list) {
 963                 struct stat st;
 964
 965                 if (prefix)
 966                         strbuf_addstr(&abs_path, prefix);
 967
 968                 strbuf_addstr(&abs_path, item->string);
 969
 970                 /*
 971                  * we might have removed this as part of earlier
 972                  * recursive directory removal, so lstat() here could
 973                  * fail with ENOENT.
 974                  */
 975                 if (lstat(abs_path.buf, &st))
 976                         continue;
 977
 978                 if (S_ISDIR(st.st_mode)) {
 979                         if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
 980                                 errors++;
 981                         if (gone && !quiet) {
 982                                 qname = quote_path_relative(item->string, NULL, &buf);
 983                                 printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
 984                         }
 985                 } else {
 986                         res = dry_run ? 0 : unlink(abs_path.buf);
 987                         if (res) {
 988                                 qname = quote_path_relative(item->string, NULL, &buf);
 989                                 warning(_(msg_warn_remove_failed), qname);
 990                                 errors++;
 991                         } else if (!quiet) {
 992                                 qname = quote_path_relative(item->string, NULL, &buf);
 993                                 printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
 994                         }
 995                 }
 996                 strbuf_reset(&abs_path);
 997         }
 998
 999         strbuf_release(&abs_path);
1000         strbuf_release(&buf);
1001         string_list_clear(&del_list, 0);
1002         string_list_clear(&exclude_list, 0);
1003         return (errors != 0);
1004 }