builtin / clean.con commit reset: optionally setup worktree and refresh index on --mixed (b7756d4)
   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
  20static int force = -1; /* unset */
  21static int interactive;
  22static struct string_list del_list = STRING_LIST_INIT_DUP;
  23static unsigned int colopts;
  24
  25static const char *const builtin_clean_usage[] = {
  26        N_("git clean [-d] [-f] [-i] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>..."),
  27        NULL
  28};
  29
  30static const char *msg_remove = N_("Removing %s\n");
  31static const char *msg_would_remove = N_("Would remove %s\n");
  32static const char *msg_skip_git_dir = N_("Skipping repository %s\n");
  33static const char *msg_would_skip_git_dir = N_("Would skip repository %s\n");
  34static const char *msg_warn_remove_failed = N_("failed to remove %s");
  35
  36static int clean_use_color = -1;
  37static 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};
  45enum 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
  58struct menu_opts {
  59        const char *header;
  60        const char *prompt;
  61        int flags;
  62};
  63
  64#define MENU_RETURN_NO_LOOP             10
  65
  66struct menu_item {
  67        char hotkey;
  68        const char *title;
  69        int selected;
  70        int (*fn)();
  71};
  72
  73enum menu_stuff_type {
  74        MENU_STUFF_TYPE_STRING_LIST = 1,
  75        MENU_STUFF_TYPE_MENU_ITEM
  76};
  77
  78struct menu_stuff {
  79        enum menu_stuff_type type;
  80        int nr;
  81        void *stuff;
  82};
  83
  84static 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
 101static int git_clean_config(const char *var, const char *value, void *cb)
 102{
 103        if (!prefixcmp(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 (!prefixcmp(var, "color.interactive.")) {
 113                int slot = parse_clean_color_slot(var +
 114                                                  strlen("color.interactive."));
 115                if (slot < 0)
 116                        return 0;
 117                if (!value)
 118                        return config_error_nonbool(var);
 119                color_parse(value, var, clean_colors[slot]);
 120                return 0;
 121        }
 122
 123        if (!strcmp(var, "clean.requireforce")) {
 124                force = !git_config_bool(var, value);
 125                return 0;
 126        }
 127
 128        /* inspect the color.ui config variable and others */
 129        return git_color_default_config(var, value, cb);
 130}
 131
 132static 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
 139static void clean_print_color(enum color_clean ix)
 140{
 141        printf("%s", clean_get_color(ix));
 142}
 143
 144static 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
 151static 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, i;
 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                for (i = 0; i < dels.nr; i++)
 246                        printf(dry_run ?  _(msg_would_remove) : _(msg_remove), dels.items[i].string);
 247        }
 248        string_list_clear(&dels, 0);
 249        return ret;
 250}
 251
 252static void pretty_print_dels(void)
 253{
 254        struct string_list list = STRING_LIST_INIT_DUP;
 255        struct string_list_item *item;
 256        struct strbuf buf = STRBUF_INIT;
 257        const char *qname;
 258        struct column_options copts;
 259
 260        for_each_string_list_item(item, &del_list) {
 261                qname = quote_path_relative(item->string, NULL, &buf);
 262                string_list_append(&list, qname);
 263        }
 264
 265        /*
 266         * always enable column display, we only consult column.*
 267         * about layout strategy and stuff
 268         */
 269        colopts = (colopts & ~COL_ENABLE_MASK) | COL_ENABLED;
 270        memset(&copts, 0, sizeof(copts));
 271        copts.indent = "  ";
 272        copts.padding = 2;
 273        print_columns(&list, colopts, &copts);
 274        strbuf_release(&buf);
 275        string_list_clear(&list, 0);
 276}
 277
 278static void pretty_print_menus(struct string_list *menu_list)
 279{
 280        unsigned int local_colopts = 0;
 281        struct column_options copts;
 282
 283        local_colopts = COL_ENABLED | COL_ROW;
 284        memset(&copts, 0, sizeof(copts));
 285        copts.indent = "  ";
 286        copts.padding = 2;
 287        print_columns(menu_list, local_colopts, &copts);
 288}
 289
 290static void prompt_help_cmd(int singleton)
 291{
 292        clean_print_color(CLEAN_COLOR_HELP);
 293        printf_ln(singleton ?
 294                  _("Prompt help:\n"
 295                    "1          - select a numbered item\n"
 296                    "foo        - select item based on unique prefix\n"
 297                    "           - (empty) select nothing") :
 298                  _("Prompt help:\n"
 299                    "1          - select a single item\n"
 300                    "3-5        - select a range of items\n"
 301                    "2-3,6-9    - select multiple ranges\n"
 302                    "foo        - select item based on unique prefix\n"
 303                    "-...       - unselect specified items\n"
 304                    "*          - choose all items\n"
 305                    "           - (empty) finish selecting"));
 306        clean_print_color(CLEAN_COLOR_RESET);
 307}
 308
 309/*
 310 * display menu stuff with number prefix and hotkey highlight
 311 */
 312static void print_highlight_menu_stuff(struct menu_stuff *stuff, int **chosen)
 313{
 314        struct string_list menu_list = STRING_LIST_INIT_DUP;
 315        struct strbuf menu = STRBUF_INIT;
 316        struct strbuf buf = 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_staff 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        strbuf_release(&buf);
 366        string_list_clear(&menu_list, 0);
 367}
 368
 369static int find_unique(const char *choice, struct menu_stuff *menu_stuff)
 370{
 371        struct menu_item *menu_item;
 372        struct string_list_item *string_list_item;
 373        int i, len, found = 0;
 374
 375        len = strlen(choice);
 376        switch (menu_stuff->type) {
 377        default:
 378                die("Bad type of menu_stuff when parse choice");
 379        case MENU_STUFF_TYPE_MENU_ITEM:
 380
 381                menu_item = (struct menu_item *)menu_stuff->stuff;
 382                for (i = 0; i < menu_stuff->nr; i++, menu_item++) {
 383                        if (len == 1 && *choice == menu_item->hotkey) {
 384                                found = i + 1;
 385                                break;
 386                        }
 387                        if (!strncasecmp(choice, menu_item->title, len)) {
 388                                if (found) {
 389                                        if (len == 1) {
 390                                                /* continue for hotkey matching */
 391                                                found = -1;
 392                                        } else {
 393                                                found = 0;
 394                                                break;
 395                                        }
 396                                } else {
 397                                        found = i + 1;
 398                                }
 399                        }
 400                }
 401                break;
 402        case MENU_STUFF_TYPE_STRING_LIST:
 403                string_list_item = ((struct string_list *)menu_stuff->stuff)->items;
 404                for (i = 0; i < menu_stuff->nr; i++, string_list_item++) {
 405                        if (!strncasecmp(choice, string_list_item->string, len)) {
 406                                if (found) {
 407                                        found = 0;
 408                                        break;
 409                                }
 410                                found = i + 1;
 411                        }
 412                }
 413                break;
 414        }
 415        return found;
 416}
 417
 418
 419/*
 420 * Parse user input, and return choice(s) for menu (menu_stuff).
 421 *
 422 * Input
 423 *     (for single choice)
 424 *         1          - select a numbered item
 425 *         foo        - select item based on menu title
 426 *                    - (empty) select nothing
 427 *
 428 *     (for multiple choice)
 429 *         1          - select a single item
 430 *         3-5        - select a range of items
 431 *         2-3,6-9    - select multiple ranges
 432 *         foo        - select item based on menu title
 433 *         -...       - unselect specified items
 434 *         *          - choose all items
 435 *                    - (empty) finish selecting
 436 *
 437 * The parse result will be saved in array **chosen, and
 438 * return number of total selections.
 439 */
 440static int parse_choice(struct menu_stuff *menu_stuff,
 441                        int is_single,
 442                        struct strbuf input,
 443                        int **chosen)
 444{
 445        struct strbuf **choice_list, **ptr;
 446        int nr = 0;
 447        int i;
 448
 449        if (is_single) {
 450                choice_list = strbuf_split_max(&input, '\n', 0);
 451        } else {
 452                char *p = input.buf;
 453                do {
 454                        if (*p == ',')
 455                                *p = ' ';
 456                } while (*p++);
 457                choice_list = strbuf_split_max(&input, ' ', 0);
 458        }
 459
 460        for (ptr = choice_list; *ptr; ptr++) {
 461                char *p;
 462                int choose = 1;
 463                int bottom = 0, top = 0;
 464                int is_range, is_number;
 465
 466                strbuf_trim(*ptr);
 467                if (!(*ptr)->len)
 468                        continue;
 469
 470                /* Input that begins with '-'; unchoose */
 471                if (*(*ptr)->buf == '-') {
 472                        choose = 0;
 473                        strbuf_remove((*ptr), 0, 1);
 474                }
 475
 476                is_range = 0;
 477                is_number = 1;
 478                for (p = (*ptr)->buf; *p; p++) {
 479                        if ('-' == *p) {
 480                                if (!is_range) {
 481                                        is_range = 1;
 482                                        is_number = 0;
 483                                } else {
 484                                        is_number = 0;
 485                                        is_range = 0;
 486                                        break;
 487                                }
 488                        } else if (!isdigit(*p)) {
 489                                is_number = 0;
 490                                is_range = 0;
 491                                break;
 492                        }
 493                }
 494
 495                if (is_number) {
 496                        bottom = atoi((*ptr)->buf);
 497                        top = bottom;
 498                } else if (is_range) {
 499                        bottom = atoi((*ptr)->buf);
 500                        /* a range can be specified like 5-7 or 5- */
 501                        if (!*(strchr((*ptr)->buf, '-') + 1))
 502                                top = menu_stuff->nr;
 503                        else
 504                                top = atoi(strchr((*ptr)->buf, '-') + 1);
 505                } else if (!strcmp((*ptr)->buf, "*")) {
 506                        bottom = 1;
 507                        top = menu_stuff->nr;
 508                } else {
 509                        bottom = find_unique((*ptr)->buf, menu_stuff);
 510                        top = bottom;
 511                }
 512
 513                if (top <= 0 || bottom <= 0 || top > menu_stuff->nr || bottom > top ||
 514                    (is_single && bottom != top)) {
 515                        clean_print_color(CLEAN_COLOR_ERROR);
 516                        printf_ln(_("Huh (%s)?"), (*ptr)->buf);
 517                        clean_print_color(CLEAN_COLOR_RESET);
 518                        continue;
 519                }
 520
 521                for (i = bottom; i <= top; i++)
 522                        (*chosen)[i-1] = choose;
 523        }
 524
 525        strbuf_list_free(choice_list);
 526
 527        for (i = 0; i < menu_stuff->nr; i++)
 528                nr += (*chosen)[i];
 529        return nr;
 530}
 531
 532/*
 533 * Implement a git-add-interactive compatible UI, which is borrowed
 534 * from git-add--interactive.perl.
 535 *
 536 * Return value:
 537 *
 538 *   - Return an array of integers
 539 *   - , and it is up to you to free the allocated memory.
 540 *   - The array ends with EOF.
 541 *   - If user pressed CTRL-D (i.e. EOF), no selection returned.
 542 */
 543static int *list_and_choose(struct menu_opts *opts, struct menu_stuff *stuff)
 544{
 545        struct strbuf choice = STRBUF_INIT;
 546        int *chosen, *result;
 547        int nr = 0;
 548        int eof = 0;
 549        int i;
 550
 551        chosen = xmalloc(sizeof(int) * stuff->nr);
 552        /* set chosen as uninitialized */
 553        for (i = 0; i < stuff->nr; i++)
 554                chosen[i] = -1;
 555
 556        for (;;) {
 557                if (opts->header) {
 558                        printf_ln("%s%s%s",
 559                                  clean_get_color(CLEAN_COLOR_HEADER),
 560                                  _(opts->header),
 561                                  clean_get_color(CLEAN_COLOR_RESET));
 562                }
 563
 564                /* chosen will be initialized by print_highlight_menu_stuff */
 565                print_highlight_menu_stuff(stuff, &chosen);
 566
 567                if (opts->flags & MENU_OPTS_LIST_ONLY)
 568                        break;
 569
 570                if (opts->prompt) {
 571                        printf("%s%s%s%s",
 572                               clean_get_color(CLEAN_COLOR_PROMPT),
 573                               _(opts->prompt),
 574                               opts->flags & MENU_OPTS_SINGLETON ? "> " : ">> ",
 575                               clean_get_color(CLEAN_COLOR_RESET));
 576                }
 577
 578                if (strbuf_getline(&choice, stdin, '\n') != EOF) {
 579                        strbuf_trim(&choice);
 580                } else {
 581                        eof = 1;
 582                        break;
 583                }
 584
 585                /* help for prompt */
 586                if (!strcmp(choice.buf, "?")) {
 587                        prompt_help_cmd(opts->flags & MENU_OPTS_SINGLETON);
 588                        continue;
 589                }
 590
 591                /* for a multiple-choice menu, press ENTER (empty) will return back */
 592                if (!(opts->flags & MENU_OPTS_SINGLETON) && !choice.len)
 593                        break;
 594
 595                nr = parse_choice(stuff,
 596                                  opts->flags & MENU_OPTS_SINGLETON,
 597                                  choice,
 598                                  &chosen);
 599
 600                if (opts->flags & MENU_OPTS_SINGLETON) {
 601                        if (nr)
 602                                break;
 603                } else if (opts->flags & MENU_OPTS_IMMEDIATE) {
 604                        break;
 605                }
 606        }
 607
 608        if (eof) {
 609                result = xmalloc(sizeof(int));
 610                *result = EOF;
 611        } else {
 612                int j = 0;
 613
 614                /*
 615                 * recalculate nr, if return back from menu directly with
 616                 * default selections.
 617                 */
 618                if (!nr) {
 619                        for (i = 0; i < stuff->nr; i++)
 620                                nr += chosen[i];
 621                }
 622
 623                result = xmalloc(sizeof(int) * (nr + 1));
 624                memset(result, 0, sizeof(int) * (nr + 1));
 625                for (i = 0; i < stuff->nr && j < nr; i++) {
 626                        if (chosen[i])
 627                                result[j++] = i;
 628                }
 629                result[j] = EOF;
 630        }
 631
 632        free(chosen);
 633        strbuf_release(&choice);
 634        return result;
 635}
 636
 637static int clean_cmd(void)
 638{
 639        return MENU_RETURN_NO_LOOP;
 640}
 641
 642static int filter_by_patterns_cmd(void)
 643{
 644        struct dir_struct dir;
 645        struct strbuf confirm = STRBUF_INIT;
 646        struct strbuf **ignore_list;
 647        struct string_list_item *item;
 648        struct exclude_list *el;
 649        int changed = -1, i;
 650
 651        for (;;) {
 652                if (!del_list.nr)
 653                        break;
 654
 655                if (changed)
 656                        pretty_print_dels();
 657
 658                clean_print_color(CLEAN_COLOR_PROMPT);
 659                printf(_("Input ignore patterns>> "));
 660                clean_print_color(CLEAN_COLOR_RESET);
 661                if (strbuf_getline(&confirm, stdin, '\n') != EOF)
 662                        strbuf_trim(&confirm);
 663                else
 664                        putchar('\n');
 665
 666                /* quit filter_by_pattern mode if press ENTER or Ctrl-D */
 667                if (!confirm.len)
 668                        break;
 669
 670                memset(&dir, 0, sizeof(dir));
 671                el = add_exclude_list(&dir, EXC_CMDL, "manual exclude");
 672                ignore_list = strbuf_split_max(&confirm, ' ', 0);
 673
 674                for (i = 0; ignore_list[i]; i++) {
 675                        strbuf_trim(ignore_list[i]);
 676                        if (!ignore_list[i]->len)
 677                                continue;
 678
 679                        add_exclude(ignore_list[i]->buf, "", 0, el, -(i+1));
 680                }
 681
 682                changed = 0;
 683                for_each_string_list_item(item, &del_list) {
 684                        int dtype = DT_UNKNOWN;
 685
 686                        if (is_excluded(&dir, item->string, &dtype)) {
 687                                *item->string = '\0';
 688                                changed++;
 689                        }
 690                }
 691
 692                if (changed) {
 693                        string_list_remove_empty_items(&del_list, 0);
 694                } else {
 695                        clean_print_color(CLEAN_COLOR_ERROR);
 696                        printf_ln(_("WARNING: Cannot find items matched by: %s"), confirm.buf);
 697                        clean_print_color(CLEAN_COLOR_RESET);
 698                }
 699
 700                strbuf_list_free(ignore_list);
 701                clear_directory(&dir);
 702        }
 703
 704        strbuf_release(&confirm);
 705        return 0;
 706}
 707
 708static int select_by_numbers_cmd(void)
 709{
 710        struct menu_opts menu_opts;
 711        struct menu_stuff menu_stuff;
 712        struct string_list_item *items;
 713        int *chosen;
 714        int i, j;
 715
 716        menu_opts.header = NULL;
 717        menu_opts.prompt = N_("Select items to delete");
 718        menu_opts.flags = 0;
 719
 720        menu_stuff.type = MENU_STUFF_TYPE_STRING_LIST;
 721        menu_stuff.stuff = &del_list;
 722        menu_stuff.nr = del_list.nr;
 723
 724        chosen = list_and_choose(&menu_opts, &menu_stuff);
 725        items = del_list.items;
 726        for (i = 0, j = 0; i < del_list.nr; i++) {
 727                if (i < chosen[j]) {
 728                        *(items[i].string) = '\0';
 729                } else if (i == chosen[j]) {
 730                        /* delete selected item */
 731                        j++;
 732                        continue;
 733                } else {
 734                        /* end of chosen (chosen[j] == EOF), won't delete */
 735                        *(items[i].string) = '\0';
 736                }
 737        }
 738
 739        string_list_remove_empty_items(&del_list, 0);
 740
 741        free(chosen);
 742        return 0;
 743}
 744
 745static int ask_each_cmd(void)
 746{
 747        struct strbuf confirm = STRBUF_INIT;
 748        struct strbuf buf = STRBUF_INIT;
 749        struct string_list_item *item;
 750        const char *qname;
 751        int changed = 0, eof = 0;
 752
 753        for_each_string_list_item(item, &del_list) {
 754                /* Ctrl-D should stop removing files */
 755                if (!eof) {
 756                        qname = quote_path_relative(item->string, NULL, &buf);
 757                        printf(_("remove %s? "), qname);
 758                        if (strbuf_getline(&confirm, stdin, '\n') != EOF) {
 759                                strbuf_trim(&confirm);
 760                        } else {
 761                                putchar('\n');
 762                                eof = 1;
 763                        }
 764                }
 765                if (!confirm.len || strncasecmp(confirm.buf, "yes", confirm.len)) {
 766                        *item->string = '\0';
 767                        changed++;
 768                }
 769        }
 770
 771        if (changed)
 772                string_list_remove_empty_items(&del_list, 0);
 773
 774        strbuf_release(&buf);
 775        strbuf_release(&confirm);
 776        return MENU_RETURN_NO_LOOP;
 777}
 778
 779static int quit_cmd(void)
 780{
 781        string_list_clear(&del_list, 0);
 782        printf_ln(_("Bye."));
 783        return MENU_RETURN_NO_LOOP;
 784}
 785
 786static int help_cmd(void)
 787{
 788        clean_print_color(CLEAN_COLOR_HELP);
 789        printf_ln(_(
 790                    "clean               - start cleaning\n"
 791                    "filter by pattern   - exclude items from deletion\n"
 792                    "select by numbers   - select items to be deleted by numbers\n"
 793                    "ask each            - confirm each deletion (like \"rm -i\")\n"
 794                    "quit                - stop cleaning\n"
 795                    "help                - this screen\n"
 796                    "?                   - help for prompt selection"
 797                   ));
 798        clean_print_color(CLEAN_COLOR_RESET);
 799        return 0;
 800}
 801
 802static void interactive_main_loop(void)
 803{
 804        while (del_list.nr) {
 805                struct menu_opts menu_opts;
 806                struct menu_stuff menu_stuff;
 807                struct menu_item menus[] = {
 808                        {'c', "clean",                  0, clean_cmd},
 809                        {'f', "filter by pattern",      0, filter_by_patterns_cmd},
 810                        {'s', "select by numbers",      0, select_by_numbers_cmd},
 811                        {'a', "ask each",               0, ask_each_cmd},
 812                        {'q', "quit",                   0, quit_cmd},
 813                        {'h', "help",                   0, help_cmd},
 814                };
 815                int *chosen;
 816
 817                menu_opts.header = N_("*** Commands ***");
 818                menu_opts.prompt = N_("What now");
 819                menu_opts.flags = MENU_OPTS_SINGLETON;
 820
 821                menu_stuff.type = MENU_STUFF_TYPE_MENU_ITEM;
 822                menu_stuff.stuff = menus;
 823                menu_stuff.nr = sizeof(menus) / sizeof(struct menu_item);
 824
 825                clean_print_color(CLEAN_COLOR_HEADER);
 826                printf_ln(Q_("Would remove the following item:",
 827                             "Would remove the following items:",
 828                             del_list.nr));
 829                clean_print_color(CLEAN_COLOR_RESET);
 830
 831                pretty_print_dels();
 832
 833                chosen = list_and_choose(&menu_opts, &menu_stuff);
 834
 835                if (*chosen != EOF) {
 836                        int ret;
 837                        ret = menus[*chosen].fn();
 838                        if (ret != MENU_RETURN_NO_LOOP) {
 839                                free(chosen);
 840                                chosen = NULL;
 841                                if (!del_list.nr) {
 842                                        clean_print_color(CLEAN_COLOR_ERROR);
 843                                        printf_ln(_("No more files to clean, exiting."));
 844                                        clean_print_color(CLEAN_COLOR_RESET);
 845                                        break;
 846                                }
 847                                continue;
 848                        }
 849                } else {
 850                        quit_cmd();
 851                }
 852
 853                free(chosen);
 854                chosen = NULL;
 855                break;
 856        }
 857}
 858
 859int cmd_clean(int argc, const char **argv, const char *prefix)
 860{
 861        int i, res;
 862        int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
 863        int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
 864        int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
 865        struct strbuf abs_path = STRBUF_INIT;
 866        struct dir_struct dir;
 867        struct pathspec pathspec;
 868        struct strbuf buf = STRBUF_INIT;
 869        struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 870        struct exclude_list *el;
 871        struct string_list_item *item;
 872        const char *qname;
 873        struct option options[] = {
 874                OPT__QUIET(&quiet, N_("do not print names of files removed")),
 875                OPT__DRY_RUN(&dry_run, N_("dry run")),
 876                OPT__FORCE(&force, N_("force")),
 877                OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
 878                OPT_BOOL('d', NULL, &remove_directories,
 879                                N_("remove whole directories")),
 880                { OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
 881                  N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
 882                OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
 883                OPT_BOOL('X', NULL, &ignored_only,
 884                                N_("remove only ignored files")),
 885                OPT_END()
 886        };
 887
 888        git_config(git_clean_config, NULL);
 889        if (force < 0)
 890                force = 0;
 891        else
 892                config_set = 1;
 893
 894        argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
 895                             0);
 896
 897        memset(&dir, 0, sizeof(dir));
 898        if (ignored_only)
 899                dir.flags |= DIR_SHOW_IGNORED;
 900
 901        if (ignored && ignored_only)
 902                die(_("-x and -X cannot be used together"));
 903
 904        if (!interactive && !dry_run && !force) {
 905                if (config_set)
 906                        die(_("clean.requireForce set to true and neither -i, -n nor -f given; "
 907                                  "refusing to clean"));
 908                else
 909                        die(_("clean.requireForce defaults to true and neither -i, -n nor -f given; "
 910                                  "refusing to clean"));
 911        }
 912
 913        if (force > 1)
 914                rm_flags = 0;
 915
 916        dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
 917
 918        if (read_cache() < 0)
 919                die(_("index file corrupt"));
 920
 921        if (!ignored)
 922                setup_standard_excludes(&dir);
 923
 924        el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 925        for (i = 0; i < exclude_list.nr; i++)
 926                add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
 927
 928        parse_pathspec(&pathspec, 0,
 929                       PATHSPEC_PREFER_CWD,
 930                       prefix, argv);
 931
 932        fill_directory(&dir, &pathspec);
 933
 934        for (i = 0; i < dir.nr; i++) {
 935                struct dir_entry *ent = dir.entries[i];
 936                int len, pos;
 937                int matches = 0;
 938                const struct cache_entry *ce;
 939                struct stat st;
 940                const char *rel;
 941
 942                /*
 943                 * Remove the '/' at the end that directory
 944                 * walking adds for directory entries.
 945                 */
 946                len = ent->len;
 947                if (len && ent->name[len-1] == '/')
 948                        len--;
 949                pos = cache_name_pos(ent->name, len);
 950                if (0 <= pos)
 951                        continue;       /* exact match */
 952                pos = -pos - 1;
 953                if (pos < active_nr) {
 954                        ce = active_cache[pos];
 955                        if (ce_namelen(ce) == len &&
 956                            !memcmp(ce->name, ent->name, len))
 957                                continue; /* Yup, this one exists unmerged */
 958                }
 959
 960                if (lstat(ent->name, &st))
 961                        die_errno("Cannot lstat '%s'", ent->name);
 962
 963                if (pathspec.nr)
 964                        matches = match_pathspec_depth(&pathspec, ent->name,
 965                                                       len, 0, NULL);
 966
 967                if (S_ISDIR(st.st_mode)) {
 968                        if (remove_directories || (matches == MATCHED_EXACTLY)) {
 969                                rel = relative_path(ent->name, prefix, &buf);
 970                                string_list_append(&del_list, rel);
 971                        }
 972                } else {
 973                        if (pathspec.nr && !matches)
 974                                continue;
 975                        rel = relative_path(ent->name, prefix, &buf);
 976                        string_list_append(&del_list, rel);
 977                }
 978        }
 979
 980        if (interactive && del_list.nr > 0)
 981                interactive_main_loop();
 982
 983        for_each_string_list_item(item, &del_list) {
 984                struct stat st;
 985
 986                if (prefix)
 987                        strbuf_addstr(&abs_path, prefix);
 988
 989                strbuf_addstr(&abs_path, item->string);
 990
 991                /*
 992                 * we might have removed this as part of earlier
 993                 * recursive directory removal, so lstat() here could
 994                 * fail with ENOENT.
 995                 */
 996                if (lstat(abs_path.buf, &st))
 997                        continue;
 998
 999                if (S_ISDIR(st.st_mode)) {
1000                        if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
1001                                errors++;
1002                        if (gone && !quiet) {
1003                                qname = quote_path_relative(item->string, NULL, &buf);
1004                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
1005                        }
1006                } else {
1007                        res = dry_run ? 0 : unlink(abs_path.buf);
1008                        if (res) {
1009                                qname = quote_path_relative(item->string, NULL, &buf);
1010                                warning(_(msg_warn_remove_failed), qname);
1011                                errors++;
1012                        } else if (!quiet) {
1013                                qname = quote_path_relative(item->string, NULL, &buf);
1014                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
1015                        }
1016                }
1017                strbuf_reset(&abs_path);
1018        }
1019
1020        strbuf_release(&abs_path);
1021        strbuf_release(&buf);
1022        string_list_clear(&del_list, 0);
1023        string_list_clear(&exclude_list, 0);
1024        return (errors != 0);
1025}