builtin / clean.con commit read-cache: make the split index obey umask settings (c9d6c78)
   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 "config.h"
  12#include "dir.h"
  13#include "parse-options.h"
  14#include "string-list.h"
  15#include "quote.h"
  16#include "column.h"
  17#include "color.h"
  18#include "pathspec.h"
  19#include "help.h"
  20
  21static int force = -1; /* unset */
  22static int interactive;
  23static struct string_list del_list = STRING_LIST_INIT_DUP;
  24static unsigned int colopts;
  25
  26static const char *const builtin_clean_usage[] = {
  27        N_("git clean [-d] [-f] [-i] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>..."),
  28        NULL
  29};
  30
  31static const char *msg_remove = N_("Removing %s\n");
  32static const char *msg_would_remove = N_("Would remove %s\n");
  33static const char *msg_skip_git_dir = N_("Skipping repository %s\n");
  34static const char *msg_would_skip_git_dir = N_("Would skip repository %s\n");
  35static const char *msg_warn_remove_failed = N_("failed to remove %s");
  36
  37enum color_clean {
  38        CLEAN_COLOR_RESET = 0,
  39        CLEAN_COLOR_PLAIN = 1,
  40        CLEAN_COLOR_PROMPT = 2,
  41        CLEAN_COLOR_HEADER = 3,
  42        CLEAN_COLOR_HELP = 4,
  43        CLEAN_COLOR_ERROR = 5
  44};
  45
  46static const char *color_interactive_slots[] = {
  47        [CLEAN_COLOR_ERROR]  = "error",
  48        [CLEAN_COLOR_HEADER] = "header",
  49        [CLEAN_COLOR_HELP]   = "help",
  50        [CLEAN_COLOR_PLAIN]  = "plain",
  51        [CLEAN_COLOR_PROMPT] = "prompt",
  52        [CLEAN_COLOR_RESET]  = "reset",
  53};
  54
  55static int clean_use_color = -1;
  56static char clean_colors[][COLOR_MAXLEN] = {
  57        [CLEAN_COLOR_ERROR] = GIT_COLOR_BOLD_RED,
  58        [CLEAN_COLOR_HEADER] = GIT_COLOR_BOLD,
  59        [CLEAN_COLOR_HELP] = GIT_COLOR_BOLD_RED,
  60        [CLEAN_COLOR_PLAIN] = GIT_COLOR_NORMAL,
  61        [CLEAN_COLOR_PROMPT] = GIT_COLOR_BOLD_BLUE,
  62        [CLEAN_COLOR_RESET] = GIT_COLOR_RESET,
  63};
  64
  65#define MENU_OPTS_SINGLETON             01
  66#define MENU_OPTS_IMMEDIATE             02
  67#define MENU_OPTS_LIST_ONLY             04
  68
  69struct menu_opts {
  70        const char *header;
  71        const char *prompt;
  72        int flags;
  73};
  74
  75#define MENU_RETURN_NO_LOOP             10
  76
  77struct menu_item {
  78        char hotkey;
  79        const char *title;
  80        int selected;
  81        int (*fn)(void);
  82};
  83
  84enum menu_stuff_type {
  85        MENU_STUFF_TYPE_STRING_LIST = 1,
  86        MENU_STUFF_TYPE_MENU_ITEM
  87};
  88
  89struct menu_stuff {
  90        enum menu_stuff_type type;
  91        int nr;
  92        void *stuff;
  93};
  94
  95define_list_config_array(color_interactive_slots);
  96
  97static int git_clean_config(const char *var, const char *value, void *cb)
  98{
  99        const char *slot_name;
 100
 101        if (starts_with(var, "column."))
 102                return git_column_config(var, value, "clean", &colopts);
 103
 104        /* honors the color.interactive* config variables which also
 105           applied in git-add--interactive and git-stash */
 106        if (!strcmp(var, "color.interactive")) {
 107                clean_use_color = git_config_colorbool(var, value);
 108                return 0;
 109        }
 110        if (skip_prefix(var, "color.interactive.", &slot_name)) {
 111                int slot = LOOKUP_CONFIG(color_interactive_slots, slot_name);
 112                if (slot < 0)
 113                        return 0;
 114                if (!value)
 115                        return config_error_nonbool(var);
 116                return color_parse(value, clean_colors[slot]);
 117        }
 118
 119        if (!strcmp(var, "clean.requireforce")) {
 120                force = !git_config_bool(var, value);
 121                return 0;
 122        }
 123
 124        /* inspect the color.ui config variable and others */
 125        return git_color_default_config(var, value, cb);
 126}
 127
 128static const char *clean_get_color(enum color_clean ix)
 129{
 130        if (want_color(clean_use_color))
 131                return clean_colors[ix];
 132        return "";
 133}
 134
 135static void clean_print_color(enum color_clean ix)
 136{
 137        printf("%s", clean_get_color(ix));
 138}
 139
 140static int exclude_cb(const struct option *opt, const char *arg, int unset)
 141{
 142        struct string_list *exclude_list = opt->value;
 143        string_list_append(exclude_list, arg);
 144        return 0;
 145}
 146
 147static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
 148                int dry_run, int quiet, int *dir_gone)
 149{
 150        DIR *dir;
 151        struct strbuf quoted = STRBUF_INIT;
 152        struct dirent *e;
 153        int res = 0, ret = 0, gone = 1, original_len = path->len, len;
 154        struct string_list dels = STRING_LIST_INIT_DUP;
 155
 156        *dir_gone = 1;
 157
 158        if ((force_flag & REMOVE_DIR_KEEP_NESTED_GIT) && is_nonbare_repository_dir(path)) {
 159                if (!quiet) {
 160                        quote_path_relative(path->buf, prefix, &quoted);
 161                        printf(dry_run ?  _(msg_would_skip_git_dir) : _(msg_skip_git_dir),
 162                                        quoted.buf);
 163                }
 164
 165                *dir_gone = 0;
 166                goto out;
 167        }
 168
 169        dir = opendir(path->buf);
 170        if (!dir) {
 171                /* an empty dir could be removed even if it is unreadble */
 172                res = dry_run ? 0 : rmdir(path->buf);
 173                if (res) {
 174                        int saved_errno = errno;
 175                        quote_path_relative(path->buf, prefix, &quoted);
 176                        errno = saved_errno;
 177                        warning_errno(_(msg_warn_remove_failed), quoted.buf);
 178                        *dir_gone = 0;
 179                }
 180                ret = res;
 181                goto out;
 182        }
 183
 184        strbuf_complete(path, '/');
 185
 186        len = path->len;
 187        while ((e = readdir(dir)) != NULL) {
 188                struct stat st;
 189                if (is_dot_or_dotdot(e->d_name))
 190                        continue;
 191
 192                strbuf_setlen(path, len);
 193                strbuf_addstr(path, e->d_name);
 194                if (lstat(path->buf, &st))
 195                        ; /* fall thru */
 196                else if (S_ISDIR(st.st_mode)) {
 197                        if (remove_dirs(path, prefix, force_flag, dry_run, quiet, &gone))
 198                                ret = 1;
 199                        if (gone) {
 200                                quote_path_relative(path->buf, prefix, &quoted);
 201                                string_list_append(&dels, quoted.buf);
 202                        } else
 203                                *dir_gone = 0;
 204                        continue;
 205                } else {
 206                        res = dry_run ? 0 : unlink(path->buf);
 207                        if (!res) {
 208                                quote_path_relative(path->buf, prefix, &quoted);
 209                                string_list_append(&dels, quoted.buf);
 210                        } else {
 211                                int saved_errno = errno;
 212                                quote_path_relative(path->buf, prefix, &quoted);
 213                                errno = saved_errno;
 214                                warning_errno(_(msg_warn_remove_failed), quoted.buf);
 215                                *dir_gone = 0;
 216                                ret = 1;
 217                        }
 218                        continue;
 219                }
 220
 221                /* path too long, stat fails, or non-directory still exists */
 222                *dir_gone = 0;
 223                ret = 1;
 224                break;
 225        }
 226        closedir(dir);
 227
 228        strbuf_setlen(path, original_len);
 229
 230        if (*dir_gone) {
 231                res = dry_run ? 0 : rmdir(path->buf);
 232                if (!res)
 233                        *dir_gone = 1;
 234                else {
 235                        int saved_errno = errno;
 236                        quote_path_relative(path->buf, prefix, &quoted);
 237                        errno = saved_errno;
 238                        warning_errno(_(msg_warn_remove_failed), quoted.buf);
 239                        *dir_gone = 0;
 240                        ret = 1;
 241                }
 242        }
 243
 244        if (!*dir_gone && !quiet) {
 245                int i;
 246                for (i = 0; i < dels.nr; i++)
 247                        printf(dry_run ?  _(msg_would_remove) : _(msg_remove), dels.items[i].string);
 248        }
 249out:
 250        strbuf_release(&quoted);
 251        string_list_clear(&dels, 0);
 252        return ret;
 253}
 254
 255static void pretty_print_dels(void)
 256{
 257        struct string_list list = STRING_LIST_INIT_DUP;
 258        struct string_list_item *item;
 259        struct strbuf buf = STRBUF_INIT;
 260        const char *qname;
 261        struct column_options copts;
 262
 263        for_each_string_list_item(item, &del_list) {
 264                qname = quote_path_relative(item->string, NULL, &buf);
 265                string_list_append(&list, qname);
 266        }
 267
 268        /*
 269         * always enable column display, we only consult column.*
 270         * about layout strategy and stuff
 271         */
 272        colopts = (colopts & ~COL_ENABLE_MASK) | COL_ENABLED;
 273        memset(&copts, 0, sizeof(copts));
 274        copts.indent = "  ";
 275        copts.padding = 2;
 276        print_columns(&list, colopts, &copts);
 277        strbuf_release(&buf);
 278        string_list_clear(&list, 0);
 279}
 280
 281static void pretty_print_menus(struct string_list *menu_list)
 282{
 283        unsigned int local_colopts = 0;
 284        struct column_options copts;
 285
 286        local_colopts = COL_ENABLED | COL_ROW;
 287        memset(&copts, 0, sizeof(copts));
 288        copts.indent = "  ";
 289        copts.padding = 2;
 290        print_columns(menu_list, local_colopts, &copts);
 291}
 292
 293static void prompt_help_cmd(int singleton)
 294{
 295        clean_print_color(CLEAN_COLOR_HELP);
 296        printf(singleton ?
 297                  _("Prompt help:\n"
 298                    "1          - select a numbered item\n"
 299                    "foo        - select item based on unique prefix\n"
 300                    "           - (empty) select nothing\n") :
 301                  _("Prompt help:\n"
 302                    "1          - select a single item\n"
 303                    "3-5        - select a range of items\n"
 304                    "2-3,6-9    - select multiple ranges\n"
 305                    "foo        - select item based on unique prefix\n"
 306                    "-...       - unselect specified items\n"
 307                    "*          - choose all items\n"
 308                    "           - (empty) finish selecting\n"));
 309        clean_print_color(CLEAN_COLOR_RESET);
 310}
 311
 312/*
 313 * display menu stuff with number prefix and hotkey highlight
 314 */
 315static void print_highlight_menu_stuff(struct menu_stuff *stuff, int **chosen)
 316{
 317        struct string_list menu_list = STRING_LIST_INIT_DUP;
 318        struct strbuf menu = STRBUF_INIT;
 319        struct menu_item *menu_item;
 320        struct string_list_item *string_list_item;
 321        int i;
 322
 323        switch (stuff->type) {
 324        default:
 325                die("Bad type of menu_stuff when print menu");
 326        case MENU_STUFF_TYPE_MENU_ITEM:
 327                menu_item = (struct menu_item *)stuff->stuff;
 328                for (i = 0; i < stuff->nr; i++, menu_item++) {
 329                        const char *p;
 330                        int highlighted = 0;
 331
 332                        p = menu_item->title;
 333                        if ((*chosen)[i] < 0)
 334                                (*chosen)[i] = menu_item->selected ? 1 : 0;
 335                        strbuf_addf(&menu, "%s%2d: ", (*chosen)[i] ? "*" : " ", i+1);
 336                        for (; *p; p++) {
 337                                if (!highlighted && *p == menu_item->hotkey) {
 338                                        strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_PROMPT));
 339                                        strbuf_addch(&menu, *p);
 340                                        strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_RESET));
 341                                        highlighted = 1;
 342                                } else {
 343                                        strbuf_addch(&menu, *p);
 344                                }
 345                        }
 346                        string_list_append(&menu_list, menu.buf);
 347                        strbuf_reset(&menu);
 348                }
 349                break;
 350        case MENU_STUFF_TYPE_STRING_LIST:
 351                i = 0;
 352                for_each_string_list_item(string_list_item, (struct string_list *)stuff->stuff) {
 353                        if ((*chosen)[i] < 0)
 354                                (*chosen)[i] = 0;
 355                        strbuf_addf(&menu, "%s%2d: %s",
 356                                    (*chosen)[i] ? "*" : " ", i+1, string_list_item->string);
 357                        string_list_append(&menu_list, menu.buf);
 358                        strbuf_reset(&menu);
 359                        i++;
 360                }
 361                break;
 362        }
 363
 364        pretty_print_menus(&menu_list);
 365
 366        strbuf_release(&menu);
 367        string_list_clear(&menu_list, 0);
 368}
 369
 370static int find_unique(const char *choice, struct menu_stuff *menu_stuff)
 371{
 372        struct menu_item *menu_item;
 373        struct string_list_item *string_list_item;
 374        int i, len, found = 0;
 375
 376        len = strlen(choice);
 377        switch (menu_stuff->type) {
 378        default:
 379                die("Bad type of menu_stuff when parse choice");
 380        case MENU_STUFF_TYPE_MENU_ITEM:
 381
 382                menu_item = (struct menu_item *)menu_stuff->stuff;
 383                for (i = 0; i < menu_stuff->nr; i++, menu_item++) {
 384                        if (len == 1 && *choice == menu_item->hotkey) {
 385                                found = i + 1;
 386                                break;
 387                        }
 388                        if (!strncasecmp(choice, menu_item->title, len)) {
 389                                if (found) {
 390                                        if (len == 1) {
 391                                                /* continue for hotkey matching */
 392                                                found = -1;
 393                                        } else {
 394                                                found = 0;
 395                                                break;
 396                                        }
 397                                } else {
 398                                        found = i + 1;
 399                                }
 400                        }
 401                }
 402                break;
 403        case MENU_STUFF_TYPE_STRING_LIST:
 404                string_list_item = ((struct string_list *)menu_stuff->stuff)->items;
 405                for (i = 0; i < menu_stuff->nr; i++, string_list_item++) {
 406                        if (!strncasecmp(choice, string_list_item->string, len)) {
 407                                if (found) {
 408                                        found = 0;
 409                                        break;
 410                                }
 411                                found = i + 1;
 412                        }
 413                }
 414                break;
 415        }
 416        return found;
 417}
 418
 419
 420/*
 421 * Parse user input, and return choice(s) for menu (menu_stuff).
 422 *
 423 * Input
 424 *     (for single choice)
 425 *         1          - select a numbered item
 426 *         foo        - select item based on menu title
 427 *                    - (empty) select nothing
 428 *
 429 *     (for multiple choice)
 430 *         1          - select a single item
 431 *         3-5        - select a range of items
 432 *         2-3,6-9    - select multiple ranges
 433 *         foo        - select item based on menu title
 434 *         -...       - unselect specified items
 435 *         *          - choose all items
 436 *                    - (empty) finish selecting
 437 *
 438 * The parse result will be saved in array **chosen, and
 439 * return number of total selections.
 440 */
 441static int parse_choice(struct menu_stuff *menu_stuff,
 442                        int is_single,
 443                        struct strbuf input,
 444                        int **chosen)
 445{
 446        struct strbuf **choice_list, **ptr;
 447        int nr = 0;
 448        int i;
 449
 450        if (is_single) {
 451                choice_list = strbuf_split_max(&input, '\n', 0);
 452        } else {
 453                char *p = input.buf;
 454                do {
 455                        if (*p == ',')
 456                                *p = ' ';
 457                } while (*p++);
 458                choice_list = strbuf_split_max(&input, ' ', 0);
 459        }
 460
 461        for (ptr = choice_list; *ptr; ptr++) {
 462                char *p;
 463                int choose = 1;
 464                int bottom = 0, top = 0;
 465                int is_range, is_number;
 466
 467                strbuf_trim(*ptr);
 468                if (!(*ptr)->len)
 469                        continue;
 470
 471                /* Input that begins with '-'; unchoose */
 472                if (*(*ptr)->buf == '-') {
 473                        choose = 0;
 474                        strbuf_remove((*ptr), 0, 1);
 475                }
 476
 477                is_range = 0;
 478                is_number = 1;
 479                for (p = (*ptr)->buf; *p; p++) {
 480                        if ('-' == *p) {
 481                                if (!is_range) {
 482                                        is_range = 1;
 483                                        is_number = 0;
 484                                } else {
 485                                        is_number = 0;
 486                                        is_range = 0;
 487                                        break;
 488                                }
 489                        } else if (!isdigit(*p)) {
 490                                is_number = 0;
 491                                is_range = 0;
 492                                break;
 493                        }
 494                }
 495
 496                if (is_number) {
 497                        bottom = atoi((*ptr)->buf);
 498                        top = bottom;
 499                } else if (is_range) {
 500                        bottom = atoi((*ptr)->buf);
 501                        /* a range can be specified like 5-7 or 5- */
 502                        if (!*(strchr((*ptr)->buf, '-') + 1))
 503                                top = menu_stuff->nr;
 504                        else
 505                                top = atoi(strchr((*ptr)->buf, '-') + 1);
 506                } else if (!strcmp((*ptr)->buf, "*")) {
 507                        bottom = 1;
 508                        top = menu_stuff->nr;
 509                } else {
 510                        bottom = find_unique((*ptr)->buf, menu_stuff);
 511                        top = bottom;
 512                }
 513
 514                if (top <= 0 || bottom <= 0 || top > menu_stuff->nr || bottom > top ||
 515                    (is_single && bottom != top)) {
 516                        clean_print_color(CLEAN_COLOR_ERROR);
 517                        printf(_("Huh (%s)?\n"), (*ptr)->buf);
 518                        clean_print_color(CLEAN_COLOR_RESET);
 519                        continue;
 520                }
 521
 522                for (i = bottom; i <= top; i++)
 523                        (*chosen)[i-1] = choose;
 524        }
 525
 526        strbuf_list_free(choice_list);
 527
 528        for (i = 0; i < menu_stuff->nr; i++)
 529                nr += (*chosen)[i];
 530        return nr;
 531}
 532
 533/*
 534 * Implement a git-add-interactive compatible UI, which is borrowed
 535 * from git-add--interactive.perl.
 536 *
 537 * Return value:
 538 *
 539 *   - Return an array of integers
 540 *   - , and it is up to you to free the allocated memory.
 541 *   - The array ends with EOF.
 542 *   - If user pressed CTRL-D (i.e. EOF), no selection returned.
 543 */
 544static int *list_and_choose(struct menu_opts *opts, struct menu_stuff *stuff)
 545{
 546        struct strbuf choice = STRBUF_INIT;
 547        int *chosen, *result;
 548        int nr = 0;
 549        int eof = 0;
 550        int i;
 551
 552        ALLOC_ARRAY(chosen, stuff->nr);
 553        /* set chosen as uninitialized */
 554        for (i = 0; i < stuff->nr; i++)
 555                chosen[i] = -1;
 556
 557        for (;;) {
 558                if (opts->header) {
 559                        printf_ln("%s%s%s",
 560                                  clean_get_color(CLEAN_COLOR_HEADER),
 561                                  _(opts->header),
 562                                  clean_get_color(CLEAN_COLOR_RESET));
 563                }
 564
 565                /* chosen will be initialized by print_highlight_menu_stuff */
 566                print_highlight_menu_stuff(stuff, &chosen);
 567
 568                if (opts->flags & MENU_OPTS_LIST_ONLY)
 569                        break;
 570
 571                if (opts->prompt) {
 572                        printf("%s%s%s%s",
 573                               clean_get_color(CLEAN_COLOR_PROMPT),
 574                               _(opts->prompt),
 575                               opts->flags & MENU_OPTS_SINGLETON ? "> " : ">> ",
 576                               clean_get_color(CLEAN_COLOR_RESET));
 577                }
 578
 579                if (strbuf_getline_lf(&choice, stdin) != EOF) {
 580                        strbuf_trim(&choice);
 581                } else {
 582                        eof = 1;
 583                        break;
 584                }
 585
 586                /* help for prompt */
 587                if (!strcmp(choice.buf, "?")) {
 588                        prompt_help_cmd(opts->flags & MENU_OPTS_SINGLETON);
 589                        continue;
 590                }
 591
 592                /* for a multiple-choice menu, press ENTER (empty) will return back */
 593                if (!(opts->flags & MENU_OPTS_SINGLETON) && !choice.len)
 594                        break;
 595
 596                nr = parse_choice(stuff,
 597                                  opts->flags & MENU_OPTS_SINGLETON,
 598                                  choice,
 599                                  &chosen);
 600
 601                if (opts->flags & MENU_OPTS_SINGLETON) {
 602                        if (nr)
 603                                break;
 604                } else if (opts->flags & MENU_OPTS_IMMEDIATE) {
 605                        break;
 606                }
 607        }
 608
 609        if (eof) {
 610                result = xmalloc(sizeof(int));
 611                *result = EOF;
 612        } else {
 613                int j = 0;
 614
 615                /*
 616                 * recalculate nr, if return back from menu directly with
 617                 * default selections.
 618                 */
 619                if (!nr) {
 620                        for (i = 0; i < stuff->nr; i++)
 621                                nr += chosen[i];
 622                }
 623
 624                result = xcalloc(st_add(nr, 1), sizeof(int));
 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_lf(&confirm, stdin) != 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, &the_index, 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                        /* TRANSLATORS: Make sure to keep [y/N] as is */
 758                        printf(_("Remove %s [y/N]? "), qname);
 759                        if (strbuf_getline_lf(&confirm, stdin) != EOF) {
 760                                strbuf_trim(&confirm);
 761                        } else {
 762                                putchar('\n');
 763                                eof = 1;
 764                        }
 765                }
 766                if (!confirm.len || strncasecmp(confirm.buf, "yes", confirm.len)) {
 767                        *item->string = '\0';
 768                        changed++;
 769                }
 770        }
 771
 772        if (changed)
 773                string_list_remove_empty_items(&del_list, 0);
 774
 775        strbuf_release(&buf);
 776        strbuf_release(&confirm);
 777        return MENU_RETURN_NO_LOOP;
 778}
 779
 780static int quit_cmd(void)
 781{
 782        string_list_clear(&del_list, 0);
 783        printf(_("Bye.\n"));
 784        return MENU_RETURN_NO_LOOP;
 785}
 786
 787static int help_cmd(void)
 788{
 789        clean_print_color(CLEAN_COLOR_HELP);
 790        printf_ln(_(
 791                    "clean               - start cleaning\n"
 792                    "filter by pattern   - exclude items from deletion\n"
 793                    "select by numbers   - select items to be deleted by numbers\n"
 794                    "ask each            - confirm each deletion (like \"rm -i\")\n"
 795                    "quit                - stop cleaning\n"
 796                    "help                - this screen\n"
 797                    "?                   - help for prompt selection"
 798                   ));
 799        clean_print_color(CLEAN_COLOR_RESET);
 800        return 0;
 801}
 802
 803static void interactive_main_loop(void)
 804{
 805        while (del_list.nr) {
 806                struct menu_opts menu_opts;
 807                struct menu_stuff menu_stuff;
 808                struct menu_item menus[] = {
 809                        {'c', "clean",                  0, clean_cmd},
 810                        {'f', "filter by pattern",      0, filter_by_patterns_cmd},
 811                        {'s', "select by numbers",      0, select_by_numbers_cmd},
 812                        {'a', "ask each",               0, ask_each_cmd},
 813                        {'q', "quit",                   0, quit_cmd},
 814                        {'h', "help",                   0, help_cmd},
 815                };
 816                int *chosen;
 817
 818                menu_opts.header = N_("*** Commands ***");
 819                menu_opts.prompt = N_("What now");
 820                menu_opts.flags = MENU_OPTS_SINGLETON;
 821
 822                menu_stuff.type = MENU_STUFF_TYPE_MENU_ITEM;
 823                menu_stuff.stuff = menus;
 824                menu_stuff.nr = sizeof(menus) / sizeof(struct menu_item);
 825
 826                clean_print_color(CLEAN_COLOR_HEADER);
 827                printf_ln(Q_("Would remove the following item:",
 828                             "Would remove the following items:",
 829                             del_list.nr));
 830                clean_print_color(CLEAN_COLOR_RESET);
 831
 832                pretty_print_dels();
 833
 834                chosen = list_and_choose(&menu_opts, &menu_stuff);
 835
 836                if (*chosen != EOF) {
 837                        int ret;
 838                        ret = menus[*chosen].fn();
 839                        if (ret != MENU_RETURN_NO_LOOP) {
 840                                FREE_AND_NULL(chosen);
 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_AND_NULL(chosen);
 854                break;
 855        }
 856}
 857
 858static void correct_untracked_entries(struct dir_struct *dir)
 859{
 860        int src, dst, ign;
 861
 862        for (src = dst = ign = 0; src < dir->nr; src++) {
 863                /* skip paths in ignored[] that cannot be inside entries[src] */
 864                while (ign < dir->ignored_nr &&
 865                       0 <= cmp_dir_entry(&dir->entries[src], &dir->ignored[ign]))
 866                        ign++;
 867
 868                if (ign < dir->ignored_nr &&
 869                    check_dir_entry_contains(dir->entries[src], dir->ignored[ign])) {
 870                        /* entries[src] contains an ignored path, so we drop it */
 871                        free(dir->entries[src]);
 872                } else {
 873                        struct dir_entry *ent = dir->entries[src++];
 874
 875                        /* entries[src] does not contain an ignored path, so we keep it */
 876                        dir->entries[dst++] = ent;
 877
 878                        /* then discard paths in entries[] contained inside entries[src] */
 879                        while (src < dir->nr &&
 880                               check_dir_entry_contains(ent, dir->entries[src]))
 881                                free(dir->entries[src++]);
 882
 883                        /* compensate for the outer loop's loop control */
 884                        src--;
 885                }
 886        }
 887        dir->nr = dst;
 888}
 889
 890int cmd_clean(int argc, const char **argv, const char *prefix)
 891{
 892        int i, res;
 893        int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
 894        int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
 895        int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
 896        struct strbuf abs_path = STRBUF_INIT;
 897        struct dir_struct dir;
 898        struct pathspec pathspec;
 899        struct strbuf buf = STRBUF_INIT;
 900        struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 901        struct exclude_list *el;
 902        struct string_list_item *item;
 903        const char *qname;
 904        struct option options[] = {
 905                OPT__QUIET(&quiet, N_("do not print names of files removed")),
 906                OPT__DRY_RUN(&dry_run, N_("dry run")),
 907                OPT__FORCE(&force, N_("force"), PARSE_OPT_NOCOMPLETE),
 908                OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
 909                OPT_BOOL('d', NULL, &remove_directories,
 910                                N_("remove whole directories")),
 911                { OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
 912                  N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
 913                OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
 914                OPT_BOOL('X', NULL, &ignored_only,
 915                                N_("remove only ignored files")),
 916                OPT_END()
 917        };
 918
 919        git_config(git_clean_config, NULL);
 920        if (force < 0)
 921                force = 0;
 922        else
 923                config_set = 1;
 924
 925        argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
 926                             0);
 927
 928        memset(&dir, 0, sizeof(dir));
 929        if (ignored_only)
 930                dir.flags |= DIR_SHOW_IGNORED;
 931
 932        if (ignored && ignored_only)
 933                die(_("-x and -X cannot be used together"));
 934
 935        if (!interactive && !dry_run && !force) {
 936                if (config_set)
 937                        die(_("clean.requireForce set to true and neither -i, -n, nor -f given; "
 938                                  "refusing to clean"));
 939                else
 940                        die(_("clean.requireForce defaults to true and neither -i, -n, nor -f given;"
 941                                  " refusing to clean"));
 942        }
 943
 944        if (force > 1)
 945                rm_flags = 0;
 946
 947        dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
 948
 949        if (remove_directories)
 950                dir.flags |= DIR_SHOW_IGNORED_TOO | DIR_KEEP_UNTRACKED_CONTENTS;
 951
 952        if (read_cache() < 0)
 953                die(_("index file corrupt"));
 954
 955        if (!ignored)
 956                setup_standard_excludes(&dir);
 957
 958        el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 959        for (i = 0; i < exclude_list.nr; i++)
 960                add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
 961
 962        parse_pathspec(&pathspec, 0,
 963                       PATHSPEC_PREFER_CWD,
 964                       prefix, argv);
 965
 966        fill_directory(&dir, &the_index, &pathspec);
 967        correct_untracked_entries(&dir);
 968
 969        for (i = 0; i < dir.nr; i++) {
 970                struct dir_entry *ent = dir.entries[i];
 971                int matches = 0;
 972                struct stat st;
 973                const char *rel;
 974
 975                if (!cache_name_is_other(ent->name, ent->len))
 976                        continue;
 977
 978                if (pathspec.nr)
 979                        matches = dir_path_match(&the_index, ent, &pathspec, 0, NULL);
 980
 981                if (pathspec.nr && !matches)
 982                        continue;
 983
 984                if (lstat(ent->name, &st))
 985                        die_errno("Cannot lstat '%s'", ent->name);
 986
 987                if (S_ISDIR(st.st_mode) && !remove_directories &&
 988                    matches != MATCHED_EXACTLY)
 989                        continue;
 990
 991                rel = relative_path(ent->name, prefix, &buf);
 992                string_list_append(&del_list, rel);
 993        }
 994
 995        for (i = 0; i < dir.nr; i++)
 996                free(dir.entries[i]);
 997
 998        for (i = 0; i < dir.ignored_nr; i++)
 999                free(dir.ignored[i]);
1000
1001        if (interactive && del_list.nr > 0)
1002                interactive_main_loop();
1003
1004        for_each_string_list_item(item, &del_list) {
1005                struct stat st;
1006
1007                if (prefix)
1008                        strbuf_addstr(&abs_path, prefix);
1009
1010                strbuf_addstr(&abs_path, item->string);
1011
1012                /*
1013                 * we might have removed this as part of earlier
1014                 * recursive directory removal, so lstat() here could
1015                 * fail with ENOENT.
1016                 */
1017                if (lstat(abs_path.buf, &st))
1018                        continue;
1019
1020                if (S_ISDIR(st.st_mode)) {
1021                        if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
1022                                errors++;
1023                        if (gone && !quiet) {
1024                                qname = quote_path_relative(item->string, NULL, &buf);
1025                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
1026                        }
1027                } else {
1028                        res = dry_run ? 0 : unlink(abs_path.buf);
1029                        if (res) {
1030                                int saved_errno = errno;
1031                                qname = quote_path_relative(item->string, NULL, &buf);
1032                                errno = saved_errno;
1033                                warning_errno(_(msg_warn_remove_failed), qname);
1034                                errors++;
1035                        } else if (!quiet) {
1036                                qname = quote_path_relative(item->string, NULL, &buf);
1037                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
1038                        }
1039                }
1040                strbuf_reset(&abs_path);
1041        }
1042
1043        strbuf_release(&abs_path);
1044        strbuf_release(&buf);
1045        string_list_clear(&del_list, 0);
1046        string_list_clear(&exclude_list, 0);
1047        return (errors != 0);
1048}