builtin / clean.con commit submodule: rewrite `module_name` shell function in C (0ea306e)
   1/*
   2 * "git clean" builtin command
   3 *
   4 * Copyright (C) 2007 Shawn Bohrer
   5 *
   6 * Based on git-clean.sh by Pavel Roskin
   7 */
   8
   9#include "builtin.h"
  10#include "cache.h"
  11#include "dir.h"
  12#include "parse-options.h"
  13#include "string-list.h"
  14#include "quote.h"
  15#include "column.h"
  16#include "color.h"
  17#include "pathspec.h"
  18
  19static int force = -1; /* unset */
  20static int interactive;
  21static struct string_list del_list = STRING_LIST_INIT_DUP;
  22static unsigned int colopts;
  23
  24static const char *const builtin_clean_usage[] = {
  25        N_("git clean [-d] [-f] [-i] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>..."),
  26        NULL
  27};
  28
  29static const char *msg_remove = N_("Removing %s\n");
  30static const char *msg_would_remove = N_("Would remove %s\n");
  31static const char *msg_skip_git_dir = N_("Skipping repository %s\n");
  32static const char *msg_would_skip_git_dir = N_("Would skip repository %s\n");
  33static const char *msg_warn_remove_failed = N_("failed to remove %s");
  34
  35static int clean_use_color = -1;
  36static char clean_colors[][COLOR_MAXLEN] = {
  37        GIT_COLOR_RESET,
  38        GIT_COLOR_NORMAL,       /* PLAIN */
  39        GIT_COLOR_BOLD_BLUE,    /* PROMPT */
  40        GIT_COLOR_BOLD,         /* HEADER */
  41        GIT_COLOR_BOLD_RED,     /* HELP */
  42        GIT_COLOR_BOLD_RED,     /* ERROR */
  43};
  44enum color_clean {
  45        CLEAN_COLOR_RESET = 0,
  46        CLEAN_COLOR_PLAIN = 1,
  47        CLEAN_COLOR_PROMPT = 2,
  48        CLEAN_COLOR_HEADER = 3,
  49        CLEAN_COLOR_HELP = 4,
  50        CLEAN_COLOR_ERROR = 5
  51};
  52
  53#define MENU_OPTS_SINGLETON             01
  54#define MENU_OPTS_IMMEDIATE             02
  55#define MENU_OPTS_LIST_ONLY             04
  56
  57struct menu_opts {
  58        const char *header;
  59        const char *prompt;
  60        int flags;
  61};
  62
  63#define MENU_RETURN_NO_LOOP             10
  64
  65struct menu_item {
  66        char hotkey;
  67        const char *title;
  68        int selected;
  69        int (*fn)(void);
  70};
  71
  72enum menu_stuff_type {
  73        MENU_STUFF_TYPE_STRING_LIST = 1,
  74        MENU_STUFF_TYPE_MENU_ITEM
  75};
  76
  77struct menu_stuff {
  78        enum menu_stuff_type type;
  79        int nr;
  80        void *stuff;
  81};
  82
  83static int parse_clean_color_slot(const char *var)
  84{
  85        if (!strcasecmp(var, "reset"))
  86                return CLEAN_COLOR_RESET;
  87        if (!strcasecmp(var, "plain"))
  88                return CLEAN_COLOR_PLAIN;
  89        if (!strcasecmp(var, "prompt"))
  90                return CLEAN_COLOR_PROMPT;
  91        if (!strcasecmp(var, "header"))
  92                return CLEAN_COLOR_HEADER;
  93        if (!strcasecmp(var, "help"))
  94                return CLEAN_COLOR_HELP;
  95        if (!strcasecmp(var, "error"))
  96                return CLEAN_COLOR_ERROR;
  97        return -1;
  98}
  99
 100static int git_clean_config(const char *var, const char *value, void *cb)
 101{
 102        const char *slot_name;
 103
 104        if (starts_with(var, "column."))
 105                return git_column_config(var, value, "clean", &colopts);
 106
 107        /* honors the color.interactive* config variables which also
 108           applied in git-add--interactive and git-stash */
 109        if (!strcmp(var, "color.interactive")) {
 110                clean_use_color = git_config_colorbool(var, value);
 111                return 0;
 112        }
 113        if (skip_prefix(var, "color.interactive.", &slot_name)) {
 114                int slot = parse_clean_color_slot(slot_name);
 115                if (slot < 0)
 116                        return 0;
 117                if (!value)
 118                        return config_error_nonbool(var);
 119                return color_parse(value, clean_colors[slot]);
 120        }
 121
 122        if (!strcmp(var, "clean.requireforce")) {
 123                force = !git_config_bool(var, value);
 124                return 0;
 125        }
 126
 127        /* inspect the color.ui config variable and others */
 128        return git_color_default_config(var, value, cb);
 129}
 130
 131static const char *clean_get_color(enum color_clean ix)
 132{
 133        if (want_color(clean_use_color))
 134                return clean_colors[ix];
 135        return "";
 136}
 137
 138static void clean_print_color(enum color_clean ix)
 139{
 140        printf("%s", clean_get_color(ix));
 141}
 142
 143static int exclude_cb(const struct option *opt, const char *arg, int unset)
 144{
 145        struct string_list *exclude_list = opt->value;
 146        string_list_append(exclude_list, arg);
 147        return 0;
 148}
 149
 150/*
 151 * Return 1 if the given path is the root of a git repository or
 152 * submodule else 0. Will not return 1 for bare repositories with the
 153 * exception of creating a bare repository in "foo/.git" and calling
 154 * is_git_repository("foo").
 155 */
 156static int is_git_repository(struct strbuf *path)
 157{
 158        int ret = 0;
 159        int gitfile_error;
 160        size_t orig_path_len = path->len;
 161        assert(orig_path_len != 0);
 162        if (path->buf[orig_path_len - 1] != '/')
 163                strbuf_addch(path, '/');
 164        strbuf_addstr(path, ".git");
 165        if (read_gitfile_gently(path->buf, &gitfile_error) || is_git_directory(path->buf))
 166                ret = 1;
 167        if (gitfile_error == READ_GITFILE_ERR_OPEN_FAILED ||
 168            gitfile_error == READ_GITFILE_ERR_READ_FAILED)
 169                ret = 1;  /* This could be a real .git file, take the
 170                           * safe option and avoid cleaning */
 171        strbuf_setlen(path, orig_path_len);
 172        return ret;
 173}
 174
 175static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
 176                int dry_run, int quiet, int *dir_gone)
 177{
 178        DIR *dir;
 179        struct strbuf quoted = STRBUF_INIT;
 180        struct dirent *e;
 181        int res = 0, ret = 0, gone = 1, original_len = path->len, len;
 182        struct string_list dels = STRING_LIST_INIT_DUP;
 183
 184        *dir_gone = 1;
 185
 186        if ((force_flag & REMOVE_DIR_KEEP_NESTED_GIT) && is_git_repository(path)) {
 187                if (!quiet) {
 188                        quote_path_relative(path->buf, prefix, &quoted);
 189                        printf(dry_run ?  _(msg_would_skip_git_dir) : _(msg_skip_git_dir),
 190                                        quoted.buf);
 191                }
 192
 193                *dir_gone = 0;
 194                return 0;
 195        }
 196
 197        dir = opendir(path->buf);
 198        if (!dir) {
 199                /* an empty dir could be removed even if it is unreadble */
 200                res = dry_run ? 0 : rmdir(path->buf);
 201                if (res) {
 202                        quote_path_relative(path->buf, prefix, &quoted);
 203                        warning(_(msg_warn_remove_failed), quoted.buf);
 204                        *dir_gone = 0;
 205                }
 206                return res;
 207        }
 208
 209        if (path->buf[original_len - 1] != '/')
 210                strbuf_addch(path, '/');
 211
 212        len = path->len;
 213        while ((e = readdir(dir)) != NULL) {
 214                struct stat st;
 215                if (is_dot_or_dotdot(e->d_name))
 216                        continue;
 217
 218                strbuf_setlen(path, len);
 219                strbuf_addstr(path, e->d_name);
 220                if (lstat(path->buf, &st))
 221                        ; /* fall thru */
 222                else if (S_ISDIR(st.st_mode)) {
 223                        if (remove_dirs(path, prefix, force_flag, dry_run, quiet, &gone))
 224                                ret = 1;
 225                        if (gone) {
 226                                quote_path_relative(path->buf, prefix, &quoted);
 227                                string_list_append(&dels, quoted.buf);
 228                        } else
 229                                *dir_gone = 0;
 230                        continue;
 231                } else {
 232                        res = dry_run ? 0 : unlink(path->buf);
 233                        if (!res) {
 234                                quote_path_relative(path->buf, prefix, &quoted);
 235                                string_list_append(&dels, quoted.buf);
 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                        continue;
 243                }
 244
 245                /* path too long, stat fails, or non-directory still exists */
 246                *dir_gone = 0;
 247                ret = 1;
 248                break;
 249        }
 250        closedir(dir);
 251
 252        strbuf_setlen(path, original_len);
 253
 254        if (*dir_gone) {
 255                res = dry_run ? 0 : rmdir(path->buf);
 256                if (!res)
 257                        *dir_gone = 1;
 258                else {
 259                        quote_path_relative(path->buf, prefix, &quoted);
 260                        warning(_(msg_warn_remove_failed), quoted.buf);
 261                        *dir_gone = 0;
 262                        ret = 1;
 263                }
 264        }
 265
 266        if (!*dir_gone && !quiet) {
 267                int i;
 268                for (i = 0; i < dels.nr; i++)
 269                        printf(dry_run ?  _(msg_would_remove) : _(msg_remove), dels.items[i].string);
 270        }
 271        string_list_clear(&dels, 0);
 272        return ret;
 273}
 274
 275static void pretty_print_dels(void)
 276{
 277        struct string_list list = STRING_LIST_INIT_DUP;
 278        struct string_list_item *item;
 279        struct strbuf buf = STRBUF_INIT;
 280        const char *qname;
 281        struct column_options copts;
 282
 283        for_each_string_list_item(item, &del_list) {
 284                qname = quote_path_relative(item->string, NULL, &buf);
 285                string_list_append(&list, qname);
 286        }
 287
 288        /*
 289         * always enable column display, we only consult column.*
 290         * about layout strategy and stuff
 291         */
 292        colopts = (colopts & ~COL_ENABLE_MASK) | COL_ENABLED;
 293        memset(&copts, 0, sizeof(copts));
 294        copts.indent = "  ";
 295        copts.padding = 2;
 296        print_columns(&list, colopts, &copts);
 297        strbuf_release(&buf);
 298        string_list_clear(&list, 0);
 299}
 300
 301static void pretty_print_menus(struct string_list *menu_list)
 302{
 303        unsigned int local_colopts = 0;
 304        struct column_options copts;
 305
 306        local_colopts = COL_ENABLED | COL_ROW;
 307        memset(&copts, 0, sizeof(copts));
 308        copts.indent = "  ";
 309        copts.padding = 2;
 310        print_columns(menu_list, local_colopts, &copts);
 311}
 312
 313static void prompt_help_cmd(int singleton)
 314{
 315        clean_print_color(CLEAN_COLOR_HELP);
 316        printf_ln(singleton ?
 317                  _("Prompt help:\n"
 318                    "1          - select a numbered item\n"
 319                    "foo        - select item based on unique prefix\n"
 320                    "           - (empty) select nothing") :
 321                  _("Prompt help:\n"
 322                    "1          - select a single item\n"
 323                    "3-5        - select a range of items\n"
 324                    "2-3,6-9    - select multiple ranges\n"
 325                    "foo        - select item based on unique prefix\n"
 326                    "-...       - unselect specified items\n"
 327                    "*          - choose all items\n"
 328                    "           - (empty) finish selecting"));
 329        clean_print_color(CLEAN_COLOR_RESET);
 330}
 331
 332/*
 333 * display menu stuff with number prefix and hotkey highlight
 334 */
 335static void print_highlight_menu_stuff(struct menu_stuff *stuff, int **chosen)
 336{
 337        struct string_list menu_list = STRING_LIST_INIT_DUP;
 338        struct strbuf menu = STRBUF_INIT;
 339        struct menu_item *menu_item;
 340        struct string_list_item *string_list_item;
 341        int i;
 342
 343        switch (stuff->type) {
 344        default:
 345                die("Bad type of menu_stuff when print menu");
 346        case MENU_STUFF_TYPE_MENU_ITEM:
 347                menu_item = (struct menu_item *)stuff->stuff;
 348                for (i = 0; i < stuff->nr; i++, menu_item++) {
 349                        const char *p;
 350                        int highlighted = 0;
 351
 352                        p = menu_item->title;
 353                        if ((*chosen)[i] < 0)
 354                                (*chosen)[i] = menu_item->selected ? 1 : 0;
 355                        strbuf_addf(&menu, "%s%2d: ", (*chosen)[i] ? "*" : " ", i+1);
 356                        for (; *p; p++) {
 357                                if (!highlighted && *p == menu_item->hotkey) {
 358                                        strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_PROMPT));
 359                                        strbuf_addch(&menu, *p);
 360                                        strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_RESET));
 361                                        highlighted = 1;
 362                                } else {
 363                                        strbuf_addch(&menu, *p);
 364                                }
 365                        }
 366                        string_list_append(&menu_list, menu.buf);
 367                        strbuf_reset(&menu);
 368                }
 369                break;
 370        case MENU_STUFF_TYPE_STRING_LIST:
 371                i = 0;
 372                for_each_string_list_item(string_list_item, (struct string_list *)stuff->stuff) {
 373                        if ((*chosen)[i] < 0)
 374                                (*chosen)[i] = 0;
 375                        strbuf_addf(&menu, "%s%2d: %s",
 376                                    (*chosen)[i] ? "*" : " ", i+1, string_list_item->string);
 377                        string_list_append(&menu_list, menu.buf);
 378                        strbuf_reset(&menu);
 379                        i++;
 380                }
 381                break;
 382        }
 383
 384        pretty_print_menus(&menu_list);
 385
 386        strbuf_release(&menu);
 387        string_list_clear(&menu_list, 0);
 388}
 389
 390static int find_unique(const char *choice, struct menu_stuff *menu_stuff)
 391{
 392        struct menu_item *menu_item;
 393        struct string_list_item *string_list_item;
 394        int i, len, found = 0;
 395
 396        len = strlen(choice);
 397        switch (menu_stuff->type) {
 398        default:
 399                die("Bad type of menu_stuff when parse choice");
 400        case MENU_STUFF_TYPE_MENU_ITEM:
 401
 402                menu_item = (struct menu_item *)menu_stuff->stuff;
 403                for (i = 0; i < menu_stuff->nr; i++, menu_item++) {
 404                        if (len == 1 && *choice == menu_item->hotkey) {
 405                                found = i + 1;
 406                                break;
 407                        }
 408                        if (!strncasecmp(choice, menu_item->title, len)) {
 409                                if (found) {
 410                                        if (len == 1) {
 411                                                /* continue for hotkey matching */
 412                                                found = -1;
 413                                        } else {
 414                                                found = 0;
 415                                                break;
 416                                        }
 417                                } else {
 418                                        found = i + 1;
 419                                }
 420                        }
 421                }
 422                break;
 423        case MENU_STUFF_TYPE_STRING_LIST:
 424                string_list_item = ((struct string_list *)menu_stuff->stuff)->items;
 425                for (i = 0; i < menu_stuff->nr; i++, string_list_item++) {
 426                        if (!strncasecmp(choice, string_list_item->string, len)) {
 427                                if (found) {
 428                                        found = 0;
 429                                        break;
 430                                }
 431                                found = i + 1;
 432                        }
 433                }
 434                break;
 435        }
 436        return found;
 437}
 438
 439
 440/*
 441 * Parse user input, and return choice(s) for menu (menu_stuff).
 442 *
 443 * Input
 444 *     (for single choice)
 445 *         1          - select a numbered item
 446 *         foo        - select item based on menu title
 447 *                    - (empty) select nothing
 448 *
 449 *     (for multiple choice)
 450 *         1          - select a single item
 451 *         3-5        - select a range of items
 452 *         2-3,6-9    - select multiple ranges
 453 *         foo        - select item based on menu title
 454 *         -...       - unselect specified items
 455 *         *          - choose all items
 456 *                    - (empty) finish selecting
 457 *
 458 * The parse result will be saved in array **chosen, and
 459 * return number of total selections.
 460 */
 461static int parse_choice(struct menu_stuff *menu_stuff,
 462                        int is_single,
 463                        struct strbuf input,
 464                        int **chosen)
 465{
 466        struct strbuf **choice_list, **ptr;
 467        int nr = 0;
 468        int i;
 469
 470        if (is_single) {
 471                choice_list = strbuf_split_max(&input, '\n', 0);
 472        } else {
 473                char *p = input.buf;
 474                do {
 475                        if (*p == ',')
 476                                *p = ' ';
 477                } while (*p++);
 478                choice_list = strbuf_split_max(&input, ' ', 0);
 479        }
 480
 481        for (ptr = choice_list; *ptr; ptr++) {
 482                char *p;
 483                int choose = 1;
 484                int bottom = 0, top = 0;
 485                int is_range, is_number;
 486
 487                strbuf_trim(*ptr);
 488                if (!(*ptr)->len)
 489                        continue;
 490
 491                /* Input that begins with '-'; unchoose */
 492                if (*(*ptr)->buf == '-') {
 493                        choose = 0;
 494                        strbuf_remove((*ptr), 0, 1);
 495                }
 496
 497                is_range = 0;
 498                is_number = 1;
 499                for (p = (*ptr)->buf; *p; p++) {
 500                        if ('-' == *p) {
 501                                if (!is_range) {
 502                                        is_range = 1;
 503                                        is_number = 0;
 504                                } else {
 505                                        is_number = 0;
 506                                        is_range = 0;
 507                                        break;
 508                                }
 509                        } else if (!isdigit(*p)) {
 510                                is_number = 0;
 511                                is_range = 0;
 512                                break;
 513                        }
 514                }
 515
 516                if (is_number) {
 517                        bottom = atoi((*ptr)->buf);
 518                        top = bottom;
 519                } else if (is_range) {
 520                        bottom = atoi((*ptr)->buf);
 521                        /* a range can be specified like 5-7 or 5- */
 522                        if (!*(strchr((*ptr)->buf, '-') + 1))
 523                                top = menu_stuff->nr;
 524                        else
 525                                top = atoi(strchr((*ptr)->buf, '-') + 1);
 526                } else if (!strcmp((*ptr)->buf, "*")) {
 527                        bottom = 1;
 528                        top = menu_stuff->nr;
 529                } else {
 530                        bottom = find_unique((*ptr)->buf, menu_stuff);
 531                        top = bottom;
 532                }
 533
 534                if (top <= 0 || bottom <= 0 || top > menu_stuff->nr || bottom > top ||
 535                    (is_single && bottom != top)) {
 536                        clean_print_color(CLEAN_COLOR_ERROR);
 537                        printf_ln(_("Huh (%s)?"), (*ptr)->buf);
 538                        clean_print_color(CLEAN_COLOR_RESET);
 539                        continue;
 540                }
 541
 542                for (i = bottom; i <= top; i++)
 543                        (*chosen)[i-1] = choose;
 544        }
 545
 546        strbuf_list_free(choice_list);
 547
 548        for (i = 0; i < menu_stuff->nr; i++)
 549                nr += (*chosen)[i];
 550        return nr;
 551}
 552
 553/*
 554 * Implement a git-add-interactive compatible UI, which is borrowed
 555 * from git-add--interactive.perl.
 556 *
 557 * Return value:
 558 *
 559 *   - Return an array of integers
 560 *   - , and it is up to you to free the allocated memory.
 561 *   - The array ends with EOF.
 562 *   - If user pressed CTRL-D (i.e. EOF), no selection returned.
 563 */
 564static int *list_and_choose(struct menu_opts *opts, struct menu_stuff *stuff)
 565{
 566        struct strbuf choice = STRBUF_INIT;
 567        int *chosen, *result;
 568        int nr = 0;
 569        int eof = 0;
 570        int i;
 571
 572        chosen = xmalloc(sizeof(int) * stuff->nr);
 573        /* set chosen as uninitialized */
 574        for (i = 0; i < stuff->nr; i++)
 575                chosen[i] = -1;
 576
 577        for (;;) {
 578                if (opts->header) {
 579                        printf_ln("%s%s%s",
 580                                  clean_get_color(CLEAN_COLOR_HEADER),
 581                                  _(opts->header),
 582                                  clean_get_color(CLEAN_COLOR_RESET));
 583                }
 584
 585                /* chosen will be initialized by print_highlight_menu_stuff */
 586                print_highlight_menu_stuff(stuff, &chosen);
 587
 588                if (opts->flags & MENU_OPTS_LIST_ONLY)
 589                        break;
 590
 591                if (opts->prompt) {
 592                        printf("%s%s%s%s",
 593                               clean_get_color(CLEAN_COLOR_PROMPT),
 594                               _(opts->prompt),
 595                               opts->flags & MENU_OPTS_SINGLETON ? "> " : ">> ",
 596                               clean_get_color(CLEAN_COLOR_RESET));
 597                }
 598
 599                if (strbuf_getline(&choice, stdin, '\n') != EOF) {
 600                        strbuf_trim(&choice);
 601                } else {
 602                        eof = 1;
 603                        break;
 604                }
 605
 606                /* help for prompt */
 607                if (!strcmp(choice.buf, "?")) {
 608                        prompt_help_cmd(opts->flags & MENU_OPTS_SINGLETON);
 609                        continue;
 610                }
 611
 612                /* for a multiple-choice menu, press ENTER (empty) will return back */
 613                if (!(opts->flags & MENU_OPTS_SINGLETON) && !choice.len)
 614                        break;
 615
 616                nr = parse_choice(stuff,
 617                                  opts->flags & MENU_OPTS_SINGLETON,
 618                                  choice,
 619                                  &chosen);
 620
 621                if (opts->flags & MENU_OPTS_SINGLETON) {
 622                        if (nr)
 623                                break;
 624                } else if (opts->flags & MENU_OPTS_IMMEDIATE) {
 625                        break;
 626                }
 627        }
 628
 629        if (eof) {
 630                result = xmalloc(sizeof(int));
 631                *result = EOF;
 632        } else {
 633                int j = 0;
 634
 635                /*
 636                 * recalculate nr, if return back from menu directly with
 637                 * default selections.
 638                 */
 639                if (!nr) {
 640                        for (i = 0; i < stuff->nr; i++)
 641                                nr += chosen[i];
 642                }
 643
 644                result = xcalloc(nr + 1, sizeof(int));
 645                for (i = 0; i < stuff->nr && j < nr; i++) {
 646                        if (chosen[i])
 647                                result[j++] = i;
 648                }
 649                result[j] = EOF;
 650        }
 651
 652        free(chosen);
 653        strbuf_release(&choice);
 654        return result;
 655}
 656
 657static int clean_cmd(void)
 658{
 659        return MENU_RETURN_NO_LOOP;
 660}
 661
 662static int filter_by_patterns_cmd(void)
 663{
 664        struct dir_struct dir;
 665        struct strbuf confirm = STRBUF_INIT;
 666        struct strbuf **ignore_list;
 667        struct string_list_item *item;
 668        struct exclude_list *el;
 669        int changed = -1, i;
 670
 671        for (;;) {
 672                if (!del_list.nr)
 673                        break;
 674
 675                if (changed)
 676                        pretty_print_dels();
 677
 678                clean_print_color(CLEAN_COLOR_PROMPT);
 679                printf(_("Input ignore patterns>> "));
 680                clean_print_color(CLEAN_COLOR_RESET);
 681                if (strbuf_getline(&confirm, stdin, '\n') != EOF)
 682                        strbuf_trim(&confirm);
 683                else
 684                        putchar('\n');
 685
 686                /* quit filter_by_pattern mode if press ENTER or Ctrl-D */
 687                if (!confirm.len)
 688                        break;
 689
 690                memset(&dir, 0, sizeof(dir));
 691                el = add_exclude_list(&dir, EXC_CMDL, "manual exclude");
 692                ignore_list = strbuf_split_max(&confirm, ' ', 0);
 693
 694                for (i = 0; ignore_list[i]; i++) {
 695                        strbuf_trim(ignore_list[i]);
 696                        if (!ignore_list[i]->len)
 697                                continue;
 698
 699                        add_exclude(ignore_list[i]->buf, "", 0, el, -(i+1));
 700                }
 701
 702                changed = 0;
 703                for_each_string_list_item(item, &del_list) {
 704                        int dtype = DT_UNKNOWN;
 705
 706                        if (is_excluded(&dir, item->string, &dtype)) {
 707                                *item->string = '\0';
 708                                changed++;
 709                        }
 710                }
 711
 712                if (changed) {
 713                        string_list_remove_empty_items(&del_list, 0);
 714                } else {
 715                        clean_print_color(CLEAN_COLOR_ERROR);
 716                        printf_ln(_("WARNING: Cannot find items matched by: %s"), confirm.buf);
 717                        clean_print_color(CLEAN_COLOR_RESET);
 718                }
 719
 720                strbuf_list_free(ignore_list);
 721                clear_directory(&dir);
 722        }
 723
 724        strbuf_release(&confirm);
 725        return 0;
 726}
 727
 728static int select_by_numbers_cmd(void)
 729{
 730        struct menu_opts menu_opts;
 731        struct menu_stuff menu_stuff;
 732        struct string_list_item *items;
 733        int *chosen;
 734        int i, j;
 735
 736        menu_opts.header = NULL;
 737        menu_opts.prompt = N_("Select items to delete");
 738        menu_opts.flags = 0;
 739
 740        menu_stuff.type = MENU_STUFF_TYPE_STRING_LIST;
 741        menu_stuff.stuff = &del_list;
 742        menu_stuff.nr = del_list.nr;
 743
 744        chosen = list_and_choose(&menu_opts, &menu_stuff);
 745        items = del_list.items;
 746        for (i = 0, j = 0; i < del_list.nr; i++) {
 747                if (i < chosen[j]) {
 748                        *(items[i].string) = '\0';
 749                } else if (i == chosen[j]) {
 750                        /* delete selected item */
 751                        j++;
 752                        continue;
 753                } else {
 754                        /* end of chosen (chosen[j] == EOF), won't delete */
 755                        *(items[i].string) = '\0';
 756                }
 757        }
 758
 759        string_list_remove_empty_items(&del_list, 0);
 760
 761        free(chosen);
 762        return 0;
 763}
 764
 765static int ask_each_cmd(void)
 766{
 767        struct strbuf confirm = STRBUF_INIT;
 768        struct strbuf buf = STRBUF_INIT;
 769        struct string_list_item *item;
 770        const char *qname;
 771        int changed = 0, eof = 0;
 772
 773        for_each_string_list_item(item, &del_list) {
 774                /* Ctrl-D should stop removing files */
 775                if (!eof) {
 776                        qname = quote_path_relative(item->string, NULL, &buf);
 777                        /* TRANSLATORS: Make sure to keep [y/N] as is */
 778                        printf(_("Remove %s [y/N]? "), qname);
 779                        if (strbuf_getline(&confirm, stdin, '\n') != EOF) {
 780                                strbuf_trim(&confirm);
 781                        } else {
 782                                putchar('\n');
 783                                eof = 1;
 784                        }
 785                }
 786                if (!confirm.len || strncasecmp(confirm.buf, "yes", confirm.len)) {
 787                        *item->string = '\0';
 788                        changed++;
 789                }
 790        }
 791
 792        if (changed)
 793                string_list_remove_empty_items(&del_list, 0);
 794
 795        strbuf_release(&buf);
 796        strbuf_release(&confirm);
 797        return MENU_RETURN_NO_LOOP;
 798}
 799
 800static int quit_cmd(void)
 801{
 802        string_list_clear(&del_list, 0);
 803        printf_ln(_("Bye."));
 804        return MENU_RETURN_NO_LOOP;
 805}
 806
 807static int help_cmd(void)
 808{
 809        clean_print_color(CLEAN_COLOR_HELP);
 810        printf_ln(_(
 811                    "clean               - start cleaning\n"
 812                    "filter by pattern   - exclude items from deletion\n"
 813                    "select by numbers   - select items to be deleted by numbers\n"
 814                    "ask each            - confirm each deletion (like \"rm -i\")\n"
 815                    "quit                - stop cleaning\n"
 816                    "help                - this screen\n"
 817                    "?                   - help for prompt selection"
 818                   ));
 819        clean_print_color(CLEAN_COLOR_RESET);
 820        return 0;
 821}
 822
 823static void interactive_main_loop(void)
 824{
 825        while (del_list.nr) {
 826                struct menu_opts menu_opts;
 827                struct menu_stuff menu_stuff;
 828                struct menu_item menus[] = {
 829                        {'c', "clean",                  0, clean_cmd},
 830                        {'f', "filter by pattern",      0, filter_by_patterns_cmd},
 831                        {'s', "select by numbers",      0, select_by_numbers_cmd},
 832                        {'a', "ask each",               0, ask_each_cmd},
 833                        {'q', "quit",                   0, quit_cmd},
 834                        {'h', "help",                   0, help_cmd},
 835                };
 836                int *chosen;
 837
 838                menu_opts.header = N_("*** Commands ***");
 839                menu_opts.prompt = N_("What now");
 840                menu_opts.flags = MENU_OPTS_SINGLETON;
 841
 842                menu_stuff.type = MENU_STUFF_TYPE_MENU_ITEM;
 843                menu_stuff.stuff = menus;
 844                menu_stuff.nr = sizeof(menus) / sizeof(struct menu_item);
 845
 846                clean_print_color(CLEAN_COLOR_HEADER);
 847                printf_ln(Q_("Would remove the following item:",
 848                             "Would remove the following items:",
 849                             del_list.nr));
 850                clean_print_color(CLEAN_COLOR_RESET);
 851
 852                pretty_print_dels();
 853
 854                chosen = list_and_choose(&menu_opts, &menu_stuff);
 855
 856                if (*chosen != EOF) {
 857                        int ret;
 858                        ret = menus[*chosen].fn();
 859                        if (ret != MENU_RETURN_NO_LOOP) {
 860                                free(chosen);
 861                                chosen = NULL;
 862                                if (!del_list.nr) {
 863                                        clean_print_color(CLEAN_COLOR_ERROR);
 864                                        printf_ln(_("No more files to clean, exiting."));
 865                                        clean_print_color(CLEAN_COLOR_RESET);
 866                                        break;
 867                                }
 868                                continue;
 869                        }
 870                } else {
 871                        quit_cmd();
 872                }
 873
 874                free(chosen);
 875                chosen = NULL;
 876                break;
 877        }
 878}
 879
 880int cmd_clean(int argc, const char **argv, const char *prefix)
 881{
 882        int i, res;
 883        int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
 884        int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
 885        int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
 886        struct strbuf abs_path = STRBUF_INIT;
 887        struct dir_struct dir;
 888        struct pathspec pathspec;
 889        struct strbuf buf = STRBUF_INIT;
 890        struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 891        struct exclude_list *el;
 892        struct string_list_item *item;
 893        const char *qname;
 894        struct option options[] = {
 895                OPT__QUIET(&quiet, N_("do not print names of files removed")),
 896                OPT__DRY_RUN(&dry_run, N_("dry run")),
 897                OPT__FORCE(&force, N_("force")),
 898                OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
 899                OPT_BOOL('d', NULL, &remove_directories,
 900                                N_("remove whole directories")),
 901                { OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
 902                  N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
 903                OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
 904                OPT_BOOL('X', NULL, &ignored_only,
 905                                N_("remove only ignored files")),
 906                OPT_END()
 907        };
 908
 909        git_config(git_clean_config, NULL);
 910        if (force < 0)
 911                force = 0;
 912        else
 913                config_set = 1;
 914
 915        argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
 916                             0);
 917
 918        memset(&dir, 0, sizeof(dir));
 919        if (ignored_only)
 920                dir.flags |= DIR_SHOW_IGNORED;
 921
 922        if (ignored && ignored_only)
 923                die(_("-x and -X cannot be used together"));
 924
 925        if (!interactive && !dry_run && !force) {
 926                if (config_set)
 927                        die(_("clean.requireForce set to true and neither -i, -n, nor -f given; "
 928                                  "refusing to clean"));
 929                else
 930                        die(_("clean.requireForce defaults to true and neither -i, -n, nor -f given;"
 931                                  " refusing to clean"));
 932        }
 933
 934        if (force > 1)
 935                rm_flags = 0;
 936
 937        dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
 938
 939        if (read_cache() < 0)
 940                die(_("index file corrupt"));
 941
 942        if (!ignored)
 943                setup_standard_excludes(&dir);
 944
 945        el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 946        for (i = 0; i < exclude_list.nr; i++)
 947                add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
 948
 949        parse_pathspec(&pathspec, 0,
 950                       PATHSPEC_PREFER_CWD,
 951                       prefix, argv);
 952
 953        fill_directory(&dir, &pathspec);
 954
 955        for (i = 0; i < dir.nr; i++) {
 956                struct dir_entry *ent = dir.entries[i];
 957                int matches = 0;
 958                struct stat st;
 959                const char *rel;
 960
 961                if (!cache_name_is_other(ent->name, ent->len))
 962                        continue;
 963
 964                if (pathspec.nr)
 965                        matches = dir_path_match(ent, &pathspec, 0, NULL);
 966
 967                if (pathspec.nr && !matches)
 968                        continue;
 969
 970                if (lstat(ent->name, &st))
 971                        die_errno("Cannot lstat '%s'", ent->name);
 972
 973                if (S_ISDIR(st.st_mode) && !remove_directories &&
 974                    matches != MATCHED_EXACTLY)
 975                        continue;
 976
 977                rel = relative_path(ent->name, prefix, &buf);
 978                string_list_append(&del_list, rel);
 979        }
 980
 981        if (interactive && del_list.nr > 0)
 982                interactive_main_loop();
 983
 984        for_each_string_list_item(item, &del_list) {
 985                struct stat st;
 986
 987                if (prefix)
 988                        strbuf_addstr(&abs_path, prefix);
 989
 990                strbuf_addstr(&abs_path, item->string);
 991
 992                /*
 993                 * we might have removed this as part of earlier
 994                 * recursive directory removal, so lstat() here could
 995                 * fail with ENOENT.
 996                 */
 997                if (lstat(abs_path.buf, &st))
 998                        continue;
 999
1000                if (S_ISDIR(st.st_mode)) {
1001                        if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
1002                                errors++;
1003                        if (gone && !quiet) {
1004                                qname = quote_path_relative(item->string, NULL, &buf);
1005                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
1006                        }
1007                } else {
1008                        res = dry_run ? 0 : unlink(abs_path.buf);
1009                        if (res) {
1010                                qname = quote_path_relative(item->string, NULL, &buf);
1011                                warning(_(msg_warn_remove_failed), qname);
1012                                errors++;
1013                        } else if (!quiet) {
1014                                qname = quote_path_relative(item->string, NULL, &buf);
1015                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
1016                        }
1017                }
1018                strbuf_reset(&abs_path);
1019        }
1020
1021        strbuf_release(&abs_path);
1022        strbuf_release(&buf);
1023        string_list_clear(&del_list, 0);
1024        string_list_clear(&exclude_list, 0);
1025        return (errors != 0);
1026}