builtin / clean.con commit mailinfo & mailsplit: check for EOF while parsing (f0733c1)
   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
 150static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
 151                int dry_run, int quiet, int *dir_gone)
 152{
 153        DIR *dir;
 154        struct strbuf quoted = STRBUF_INIT;
 155        struct dirent *e;
 156        int res = 0, ret = 0, gone = 1, original_len = path->len, len;
 157        struct string_list dels = STRING_LIST_INIT_DUP;
 158
 159        *dir_gone = 1;
 160
 161        if ((force_flag & REMOVE_DIR_KEEP_NESTED_GIT) && is_nonbare_repository_dir(path)) {
 162                if (!quiet) {
 163                        quote_path_relative(path->buf, prefix, &quoted);
 164                        printf(dry_run ?  _(msg_would_skip_git_dir) : _(msg_skip_git_dir),
 165                                        quoted.buf);
 166                }
 167
 168                *dir_gone = 0;
 169                return 0;
 170        }
 171
 172        dir = opendir(path->buf);
 173        if (!dir) {
 174                /* an empty dir could be removed even if it is unreadble */
 175                res = dry_run ? 0 : rmdir(path->buf);
 176                if (res) {
 177                        int saved_errno = errno;
 178                        quote_path_relative(path->buf, prefix, &quoted);
 179                        errno = saved_errno;
 180                        warning_errno(_(msg_warn_remove_failed), quoted.buf);
 181                        *dir_gone = 0;
 182                }
 183                return res;
 184        }
 185
 186        strbuf_complete(path, '/');
 187
 188        len = path->len;
 189        while ((e = readdir(dir)) != NULL) {
 190                struct stat st;
 191                if (is_dot_or_dotdot(e->d_name))
 192                        continue;
 193
 194                strbuf_setlen(path, len);
 195                strbuf_addstr(path, e->d_name);
 196                if (lstat(path->buf, &st))
 197                        ; /* fall thru */
 198                else if (S_ISDIR(st.st_mode)) {
 199                        if (remove_dirs(path, prefix, force_flag, dry_run, quiet, &gone))
 200                                ret = 1;
 201                        if (gone) {
 202                                quote_path_relative(path->buf, prefix, &quoted);
 203                                string_list_append(&dels, quoted.buf);
 204                        } else
 205                                *dir_gone = 0;
 206                        continue;
 207                } else {
 208                        res = dry_run ? 0 : unlink(path->buf);
 209                        if (!res) {
 210                                quote_path_relative(path->buf, prefix, &quoted);
 211                                string_list_append(&dels, quoted.buf);
 212                        } else {
 213                                int saved_errno = errno;
 214                                quote_path_relative(path->buf, prefix, &quoted);
 215                                errno = saved_errno;
 216                                warning_errno(_(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                        int saved_errno = errno;
 238                        quote_path_relative(path->buf, prefix, &quoted);
 239                        errno = saved_errno;
 240                        warning_errno(_(msg_warn_remove_failed), quoted.buf);
 241                        *dir_gone = 0;
 242                        ret = 1;
 243                }
 244        }
 245
 246        if (!*dir_gone && !quiet) {
 247                int i;
 248                for (i = 0; i < dels.nr; i++)
 249                        printf(dry_run ?  _(msg_would_remove) : _(msg_remove), dels.items[i].string);
 250        }
 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, 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(chosen);
 841                                chosen = NULL;
 842                                if (!del_list.nr) {
 843                                        clean_print_color(CLEAN_COLOR_ERROR);
 844                                        printf_ln(_("No more files to clean, exiting."));
 845                                        clean_print_color(CLEAN_COLOR_RESET);
 846                                        break;
 847                                }
 848                                continue;
 849                        }
 850                } else {
 851                        quit_cmd();
 852                }
 853
 854                free(chosen);
 855                chosen = NULL;
 856                break;
 857        }
 858}
 859
 860int cmd_clean(int argc, const char **argv, const char *prefix)
 861{
 862        int i, res;
 863        int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
 864        int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
 865        int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
 866        struct strbuf abs_path = STRBUF_INIT;
 867        struct dir_struct dir;
 868        struct pathspec pathspec;
 869        struct strbuf buf = STRBUF_INIT;
 870        struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 871        struct exclude_list *el;
 872        struct string_list_item *item;
 873        const char *qname;
 874        struct option options[] = {
 875                OPT__QUIET(&quiet, N_("do not print names of files removed")),
 876                OPT__DRY_RUN(&dry_run, N_("dry run")),
 877                OPT__FORCE(&force, N_("force")),
 878                OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
 879                OPT_BOOL('d', NULL, &remove_directories,
 880                                N_("remove whole directories")),
 881                { OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
 882                  N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
 883                OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
 884                OPT_BOOL('X', NULL, &ignored_only,
 885                                N_("remove only ignored files")),
 886                OPT_END()
 887        };
 888
 889        git_config(git_clean_config, NULL);
 890        if (force < 0)
 891                force = 0;
 892        else
 893                config_set = 1;
 894
 895        argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
 896                             0);
 897
 898        memset(&dir, 0, sizeof(dir));
 899        if (ignored_only)
 900                dir.flags |= DIR_SHOW_IGNORED;
 901
 902        if (ignored && ignored_only)
 903                die(_("-x and -X cannot be used together"));
 904
 905        if (!interactive && !dry_run && !force) {
 906                if (config_set)
 907                        die(_("clean.requireForce set to true and neither -i, -n, nor -f given; "
 908                                  "refusing to clean"));
 909                else
 910                        die(_("clean.requireForce defaults to true and neither -i, -n, nor -f given;"
 911                                  " refusing to clean"));
 912        }
 913
 914        if (force > 1)
 915                rm_flags = 0;
 916
 917        dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
 918
 919        if (read_cache() < 0)
 920                die(_("index file corrupt"));
 921
 922        if (!ignored)
 923                setup_standard_excludes(&dir);
 924
 925        el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 926        for (i = 0; i < exclude_list.nr; i++)
 927                add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
 928
 929        parse_pathspec(&pathspec, 0,
 930                       PATHSPEC_PREFER_CWD,
 931                       prefix, argv);
 932
 933        fill_directory(&dir, &pathspec);
 934
 935        for (i = 0; i < dir.nr; i++) {
 936                struct dir_entry *ent = dir.entries[i];
 937                int matches = 0;
 938                struct stat st;
 939                const char *rel;
 940
 941                if (!cache_name_is_other(ent->name, ent->len))
 942                        continue;
 943
 944                if (pathspec.nr)
 945                        matches = dir_path_match(ent, &pathspec, 0, NULL);
 946
 947                if (pathspec.nr && !matches)
 948                        continue;
 949
 950                if (lstat(ent->name, &st))
 951                        die_errno("Cannot lstat '%s'", ent->name);
 952
 953                if (S_ISDIR(st.st_mode) && !remove_directories &&
 954                    matches != MATCHED_EXACTLY)
 955                        continue;
 956
 957                rel = relative_path(ent->name, prefix, &buf);
 958                string_list_append(&del_list, rel);
 959        }
 960
 961        if (interactive && del_list.nr > 0)
 962                interactive_main_loop();
 963
 964        for_each_string_list_item(item, &del_list) {
 965                struct stat st;
 966
 967                if (prefix)
 968                        strbuf_addstr(&abs_path, prefix);
 969
 970                strbuf_addstr(&abs_path, item->string);
 971
 972                /*
 973                 * we might have removed this as part of earlier
 974                 * recursive directory removal, so lstat() here could
 975                 * fail with ENOENT.
 976                 */
 977                if (lstat(abs_path.buf, &st))
 978                        continue;
 979
 980                if (S_ISDIR(st.st_mode)) {
 981                        if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
 982                                errors++;
 983                        if (gone && !quiet) {
 984                                qname = quote_path_relative(item->string, NULL, &buf);
 985                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
 986                        }
 987                } else {
 988                        res = dry_run ? 0 : unlink(abs_path.buf);
 989                        if (res) {
 990                                int saved_errno = errno;
 991                                qname = quote_path_relative(item->string, NULL, &buf);
 992                                errno = saved_errno;
 993                                warning_errno(_(msg_warn_remove_failed), qname);
 994                                errors++;
 995                        } else if (!quiet) {
 996                                qname = quote_path_relative(item->string, NULL, &buf);
 997                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
 998                        }
 999                }
1000                strbuf_reset(&abs_path);
1001        }
1002
1003        strbuf_release(&abs_path);
1004        strbuf_release(&buf);
1005        string_list_clear(&del_list, 0);
1006        string_list_clear(&exclude_list, 0);
1007        return (errors != 0);
1008}