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