builtin / clean.con commit commit: don't rewrite shared index unnecessarily (475a344)
   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)(void);
  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        const char *slot_name;
 104
 105        if (starts_with(var, "column."))
 106                return git_column_config(var, value, "clean", &colopts);
 107
 108        /* honors the color.interactive* config variables which also
 109           applied in git-add--interactive and git-stash */
 110        if (!strcmp(var, "color.interactive")) {
 111                clean_use_color = git_config_colorbool(var, value);
 112                return 0;
 113        }
 114        if (skip_prefix(var, "color.interactive.", &slot_name)) {
 115                int slot = parse_clean_color_slot(slot_name);
 116                if (slot < 0)
 117                        return 0;
 118                if (!value)
 119                        return config_error_nonbool(var);
 120                return color_parse(value, clean_colors[slot]);
 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;
 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                int i;
 246                for (i = 0; i < dels.nr; i++)
 247                        printf(dry_run ?  _(msg_would_remove) : _(msg_remove), dels.items[i].string);
 248        }
 249        string_list_clear(&dels, 0);
 250        return ret;
 251}
 252
 253static void pretty_print_dels(void)
 254{
 255        struct string_list list = STRING_LIST_INIT_DUP;
 256        struct string_list_item *item;
 257        struct strbuf buf = STRBUF_INIT;
 258        const char *qname;
 259        struct column_options copts;
 260
 261        for_each_string_list_item(item, &del_list) {
 262                qname = quote_path_relative(item->string, NULL, &buf);
 263                string_list_append(&list, qname);
 264        }
 265
 266        /*
 267         * always enable column display, we only consult column.*
 268         * about layout strategy and stuff
 269         */
 270        colopts = (colopts & ~COL_ENABLE_MASK) | COL_ENABLED;
 271        memset(&copts, 0, sizeof(copts));
 272        copts.indent = "  ";
 273        copts.padding = 2;
 274        print_columns(&list, colopts, &copts);
 275        strbuf_release(&buf);
 276        string_list_clear(&list, 0);
 277}
 278
 279static void pretty_print_menus(struct string_list *menu_list)
 280{
 281        unsigned int local_colopts = 0;
 282        struct column_options copts;
 283
 284        local_colopts = COL_ENABLED | COL_ROW;
 285        memset(&copts, 0, sizeof(copts));
 286        copts.indent = "  ";
 287        copts.padding = 2;
 288        print_columns(menu_list, local_colopts, &copts);
 289}
 290
 291static void prompt_help_cmd(int singleton)
 292{
 293        clean_print_color(CLEAN_COLOR_HELP);
 294        printf_ln(singleton ?
 295                  _("Prompt help:\n"
 296                    "1          - select a numbered item\n"
 297                    "foo        - select item based on unique prefix\n"
 298                    "           - (empty) select nothing") :
 299                  _("Prompt help:\n"
 300                    "1          - select a single item\n"
 301                    "3-5        - select a range of items\n"
 302                    "2-3,6-9    - select multiple ranges\n"
 303                    "foo        - select item based on unique prefix\n"
 304                    "-...       - unselect specified items\n"
 305                    "*          - choose all items\n"
 306                    "           - (empty) finish selecting"));
 307        clean_print_color(CLEAN_COLOR_RESET);
 308}
 309
 310/*
 311 * display menu stuff with number prefix and hotkey highlight
 312 */
 313static void print_highlight_menu_stuff(struct menu_stuff *stuff, int **chosen)
 314{
 315        struct string_list menu_list = STRING_LIST_INIT_DUP;
 316        struct strbuf menu = 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_stuff 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        string_list_clear(&menu_list, 0);
 366}
 367
 368static int find_unique(const char *choice, struct menu_stuff *menu_stuff)
 369{
 370        struct menu_item *menu_item;
 371        struct string_list_item *string_list_item;
 372        int i, len, found = 0;
 373
 374        len = strlen(choice);
 375        switch (menu_stuff->type) {
 376        default:
 377                die("Bad type of menu_stuff when parse choice");
 378        case MENU_STUFF_TYPE_MENU_ITEM:
 379
 380                menu_item = (struct menu_item *)menu_stuff->stuff;
 381                for (i = 0; i < menu_stuff->nr; i++, menu_item++) {
 382                        if (len == 1 && *choice == menu_item->hotkey) {
 383                                found = i + 1;
 384                                break;
 385                        }
 386                        if (!strncasecmp(choice, menu_item->title, len)) {
 387                                if (found) {
 388                                        if (len == 1) {
 389                                                /* continue for hotkey matching */
 390                                                found = -1;
 391                                        } else {
 392                                                found = 0;
 393                                                break;
 394                                        }
 395                                } else {
 396                                        found = i + 1;
 397                                }
 398                        }
 399                }
 400                break;
 401        case MENU_STUFF_TYPE_STRING_LIST:
 402                string_list_item = ((struct string_list *)menu_stuff->stuff)->items;
 403                for (i = 0; i < menu_stuff->nr; i++, string_list_item++) {
 404                        if (!strncasecmp(choice, string_list_item->string, len)) {
 405                                if (found) {
 406                                        found = 0;
 407                                        break;
 408                                }
 409                                found = i + 1;
 410                        }
 411                }
 412                break;
 413        }
 414        return found;
 415}
 416
 417
 418/*
 419 * Parse user input, and return choice(s) for menu (menu_stuff).
 420 *
 421 * Input
 422 *     (for single choice)
 423 *         1          - select a numbered item
 424 *         foo        - select item based on menu title
 425 *                    - (empty) select nothing
 426 *
 427 *     (for multiple choice)
 428 *         1          - select a single item
 429 *         3-5        - select a range of items
 430 *         2-3,6-9    - select multiple ranges
 431 *         foo        - select item based on menu title
 432 *         -...       - unselect specified items
 433 *         *          - choose all items
 434 *                    - (empty) finish selecting
 435 *
 436 * The parse result will be saved in array **chosen, and
 437 * return number of total selections.
 438 */
 439static int parse_choice(struct menu_stuff *menu_stuff,
 440                        int is_single,
 441                        struct strbuf input,
 442                        int **chosen)
 443{
 444        struct strbuf **choice_list, **ptr;
 445        int nr = 0;
 446        int i;
 447
 448        if (is_single) {
 449                choice_list = strbuf_split_max(&input, '\n', 0);
 450        } else {
 451                char *p = input.buf;
 452                do {
 453                        if (*p == ',')
 454                                *p = ' ';
 455                } while (*p++);
 456                choice_list = strbuf_split_max(&input, ' ', 0);
 457        }
 458
 459        for (ptr = choice_list; *ptr; ptr++) {
 460                char *p;
 461                int choose = 1;
 462                int bottom = 0, top = 0;
 463                int is_range, is_number;
 464
 465                strbuf_trim(*ptr);
 466                if (!(*ptr)->len)
 467                        continue;
 468
 469                /* Input that begins with '-'; unchoose */
 470                if (*(*ptr)->buf == '-') {
 471                        choose = 0;
 472                        strbuf_remove((*ptr), 0, 1);
 473                }
 474
 475                is_range = 0;
 476                is_number = 1;
 477                for (p = (*ptr)->buf; *p; p++) {
 478                        if ('-' == *p) {
 479                                if (!is_range) {
 480                                        is_range = 1;
 481                                        is_number = 0;
 482                                } else {
 483                                        is_number = 0;
 484                                        is_range = 0;
 485                                        break;
 486                                }
 487                        } else if (!isdigit(*p)) {
 488                                is_number = 0;
 489                                is_range = 0;
 490                                break;
 491                        }
 492                }
 493
 494                if (is_number) {
 495                        bottom = atoi((*ptr)->buf);
 496                        top = bottom;
 497                } else if (is_range) {
 498                        bottom = atoi((*ptr)->buf);
 499                        /* a range can be specified like 5-7 or 5- */
 500                        if (!*(strchr((*ptr)->buf, '-') + 1))
 501                                top = menu_stuff->nr;
 502                        else
 503                                top = atoi(strchr((*ptr)->buf, '-') + 1);
 504                } else if (!strcmp((*ptr)->buf, "*")) {
 505                        bottom = 1;
 506                        top = menu_stuff->nr;
 507                } else {
 508                        bottom = find_unique((*ptr)->buf, menu_stuff);
 509                        top = bottom;
 510                }
 511
 512                if (top <= 0 || bottom <= 0 || top > menu_stuff->nr || bottom > top ||
 513                    (is_single && bottom != top)) {
 514                        clean_print_color(CLEAN_COLOR_ERROR);
 515                        printf_ln(_("Huh (%s)?"), (*ptr)->buf);
 516                        clean_print_color(CLEAN_COLOR_RESET);
 517                        continue;
 518                }
 519
 520                for (i = bottom; i <= top; i++)
 521                        (*chosen)[i-1] = choose;
 522        }
 523
 524        strbuf_list_free(choice_list);
 525
 526        for (i = 0; i < menu_stuff->nr; i++)
 527                nr += (*chosen)[i];
 528        return nr;
 529}
 530
 531/*
 532 * Implement a git-add-interactive compatible UI, which is borrowed
 533 * from git-add--interactive.perl.
 534 *
 535 * Return value:
 536 *
 537 *   - Return an array of integers
 538 *   - , and it is up to you to free the allocated memory.
 539 *   - The array ends with EOF.
 540 *   - If user pressed CTRL-D (i.e. EOF), no selection returned.
 541 */
 542static int *list_and_choose(struct menu_opts *opts, struct menu_stuff *stuff)
 543{
 544        struct strbuf choice = STRBUF_INIT;
 545        int *chosen, *result;
 546        int nr = 0;
 547        int eof = 0;
 548        int i;
 549
 550        chosen = xmalloc(sizeof(int) * stuff->nr);
 551        /* set chosen as uninitialized */
 552        for (i = 0; i < stuff->nr; i++)
 553                chosen[i] = -1;
 554
 555        for (;;) {
 556                if (opts->header) {
 557                        printf_ln("%s%s%s",
 558                                  clean_get_color(CLEAN_COLOR_HEADER),
 559                                  _(opts->header),
 560                                  clean_get_color(CLEAN_COLOR_RESET));
 561                }
 562
 563                /* chosen will be initialized by print_highlight_menu_stuff */
 564                print_highlight_menu_stuff(stuff, &chosen);
 565
 566                if (opts->flags & MENU_OPTS_LIST_ONLY)
 567                        break;
 568
 569                if (opts->prompt) {
 570                        printf("%s%s%s%s",
 571                               clean_get_color(CLEAN_COLOR_PROMPT),
 572                               _(opts->prompt),
 573                               opts->flags & MENU_OPTS_SINGLETON ? "> " : ">> ",
 574                               clean_get_color(CLEAN_COLOR_RESET));
 575                }
 576
 577                if (strbuf_getline(&choice, stdin, '\n') != EOF) {
 578                        strbuf_trim(&choice);
 579                } else {
 580                        eof = 1;
 581                        break;
 582                }
 583
 584                /* help for prompt */
 585                if (!strcmp(choice.buf, "?")) {
 586                        prompt_help_cmd(opts->flags & MENU_OPTS_SINGLETON);
 587                        continue;
 588                }
 589
 590                /* for a multiple-choice menu, press ENTER (empty) will return back */
 591                if (!(opts->flags & MENU_OPTS_SINGLETON) && !choice.len)
 592                        break;
 593
 594                nr = parse_choice(stuff,
 595                                  opts->flags & MENU_OPTS_SINGLETON,
 596                                  choice,
 597                                  &chosen);
 598
 599                if (opts->flags & MENU_OPTS_SINGLETON) {
 600                        if (nr)
 601                                break;
 602                } else if (opts->flags & MENU_OPTS_IMMEDIATE) {
 603                        break;
 604                }
 605        }
 606
 607        if (eof) {
 608                result = xmalloc(sizeof(int));
 609                *result = EOF;
 610        } else {
 611                int j = 0;
 612
 613                /*
 614                 * recalculate nr, if return back from menu directly with
 615                 * default selections.
 616                 */
 617                if (!nr) {
 618                        for (i = 0; i < stuff->nr; i++)
 619                                nr += chosen[i];
 620                }
 621
 622                result = xcalloc(nr + 1, sizeof(int));
 623                for (i = 0; i < stuff->nr && j < nr; i++) {
 624                        if (chosen[i])
 625                                result[j++] = i;
 626                }
 627                result[j] = EOF;
 628        }
 629
 630        free(chosen);
 631        strbuf_release(&choice);
 632        return result;
 633}
 634
 635static int clean_cmd(void)
 636{
 637        return MENU_RETURN_NO_LOOP;
 638}
 639
 640static int filter_by_patterns_cmd(void)
 641{
 642        struct dir_struct dir;
 643        struct strbuf confirm = STRBUF_INIT;
 644        struct strbuf **ignore_list;
 645        struct string_list_item *item;
 646        struct exclude_list *el;
 647        int changed = -1, i;
 648
 649        for (;;) {
 650                if (!del_list.nr)
 651                        break;
 652
 653                if (changed)
 654                        pretty_print_dels();
 655
 656                clean_print_color(CLEAN_COLOR_PROMPT);
 657                printf(_("Input ignore patterns>> "));
 658                clean_print_color(CLEAN_COLOR_RESET);
 659                if (strbuf_getline(&confirm, stdin, '\n') != EOF)
 660                        strbuf_trim(&confirm);
 661                else
 662                        putchar('\n');
 663
 664                /* quit filter_by_pattern mode if press ENTER or Ctrl-D */
 665                if (!confirm.len)
 666                        break;
 667
 668                memset(&dir, 0, sizeof(dir));
 669                el = add_exclude_list(&dir, EXC_CMDL, "manual exclude");
 670                ignore_list = strbuf_split_max(&confirm, ' ', 0);
 671
 672                for (i = 0; ignore_list[i]; i++) {
 673                        strbuf_trim(ignore_list[i]);
 674                        if (!ignore_list[i]->len)
 675                                continue;
 676
 677                        add_exclude(ignore_list[i]->buf, "", 0, el, -(i+1));
 678                }
 679
 680                changed = 0;
 681                for_each_string_list_item(item, &del_list) {
 682                        int dtype = DT_UNKNOWN;
 683
 684                        if (is_excluded(&dir, item->string, &dtype)) {
 685                                *item->string = '\0';
 686                                changed++;
 687                        }
 688                }
 689
 690                if (changed) {
 691                        string_list_remove_empty_items(&del_list, 0);
 692                } else {
 693                        clean_print_color(CLEAN_COLOR_ERROR);
 694                        printf_ln(_("WARNING: Cannot find items matched by: %s"), confirm.buf);
 695                        clean_print_color(CLEAN_COLOR_RESET);
 696                }
 697
 698                strbuf_list_free(ignore_list);
 699                clear_directory(&dir);
 700        }
 701
 702        strbuf_release(&confirm);
 703        return 0;
 704}
 705
 706static int select_by_numbers_cmd(void)
 707{
 708        struct menu_opts menu_opts;
 709        struct menu_stuff menu_stuff;
 710        struct string_list_item *items;
 711        int *chosen;
 712        int i, j;
 713
 714        menu_opts.header = NULL;
 715        menu_opts.prompt = N_("Select items to delete");
 716        menu_opts.flags = 0;
 717
 718        menu_stuff.type = MENU_STUFF_TYPE_STRING_LIST;
 719        menu_stuff.stuff = &del_list;
 720        menu_stuff.nr = del_list.nr;
 721
 722        chosen = list_and_choose(&menu_opts, &menu_stuff);
 723        items = del_list.items;
 724        for (i = 0, j = 0; i < del_list.nr; i++) {
 725                if (i < chosen[j]) {
 726                        *(items[i].string) = '\0';
 727                } else if (i == chosen[j]) {
 728                        /* delete selected item */
 729                        j++;
 730                        continue;
 731                } else {
 732                        /* end of chosen (chosen[j] == EOF), won't delete */
 733                        *(items[i].string) = '\0';
 734                }
 735        }
 736
 737        string_list_remove_empty_items(&del_list, 0);
 738
 739        free(chosen);
 740        return 0;
 741}
 742
 743static int ask_each_cmd(void)
 744{
 745        struct strbuf confirm = STRBUF_INIT;
 746        struct strbuf buf = STRBUF_INIT;
 747        struct string_list_item *item;
 748        const char *qname;
 749        int changed = 0, eof = 0;
 750
 751        for_each_string_list_item(item, &del_list) {
 752                /* Ctrl-D should stop removing files */
 753                if (!eof) {
 754                        qname = quote_path_relative(item->string, NULL, &buf);
 755                        /* TRANSLATORS: Make sure to keep [y/N] as is */
 756                        printf(_("Remove %s [y/N]? "), qname);
 757                        if (strbuf_getline(&confirm, stdin, '\n') != EOF) {
 758                                strbuf_trim(&confirm);
 759                        } else {
 760                                putchar('\n');
 761                                eof = 1;
 762                        }
 763                }
 764                if (!confirm.len || strncasecmp(confirm.buf, "yes", confirm.len)) {
 765                        *item->string = '\0';
 766                        changed++;
 767                }
 768        }
 769
 770        if (changed)
 771                string_list_remove_empty_items(&del_list, 0);
 772
 773        strbuf_release(&buf);
 774        strbuf_release(&confirm);
 775        return MENU_RETURN_NO_LOOP;
 776}
 777
 778static int quit_cmd(void)
 779{
 780        string_list_clear(&del_list, 0);
 781        printf_ln(_("Bye."));
 782        return MENU_RETURN_NO_LOOP;
 783}
 784
 785static int help_cmd(void)
 786{
 787        clean_print_color(CLEAN_COLOR_HELP);
 788        printf_ln(_(
 789                    "clean               - start cleaning\n"
 790                    "filter by pattern   - exclude items from deletion\n"
 791                    "select by numbers   - select items to be deleted by numbers\n"
 792                    "ask each            - confirm each deletion (like \"rm -i\")\n"
 793                    "quit                - stop cleaning\n"
 794                    "help                - this screen\n"
 795                    "?                   - help for prompt selection"
 796                   ));
 797        clean_print_color(CLEAN_COLOR_RESET);
 798        return 0;
 799}
 800
 801static void interactive_main_loop(void)
 802{
 803        while (del_list.nr) {
 804                struct menu_opts menu_opts;
 805                struct menu_stuff menu_stuff;
 806                struct menu_item menus[] = {
 807                        {'c', "clean",                  0, clean_cmd},
 808                        {'f', "filter by pattern",      0, filter_by_patterns_cmd},
 809                        {'s', "select by numbers",      0, select_by_numbers_cmd},
 810                        {'a', "ask each",               0, ask_each_cmd},
 811                        {'q', "quit",                   0, quit_cmd},
 812                        {'h', "help",                   0, help_cmd},
 813                };
 814                int *chosen;
 815
 816                menu_opts.header = N_("*** Commands ***");
 817                menu_opts.prompt = N_("What now");
 818                menu_opts.flags = MENU_OPTS_SINGLETON;
 819
 820                menu_stuff.type = MENU_STUFF_TYPE_MENU_ITEM;
 821                menu_stuff.stuff = menus;
 822                menu_stuff.nr = sizeof(menus) / sizeof(struct menu_item);
 823
 824                clean_print_color(CLEAN_COLOR_HEADER);
 825                printf_ln(Q_("Would remove the following item:",
 826                             "Would remove the following items:",
 827                             del_list.nr));
 828                clean_print_color(CLEAN_COLOR_RESET);
 829
 830                pretty_print_dels();
 831
 832                chosen = list_and_choose(&menu_opts, &menu_stuff);
 833
 834                if (*chosen != EOF) {
 835                        int ret;
 836                        ret = menus[*chosen].fn();
 837                        if (ret != MENU_RETURN_NO_LOOP) {
 838                                free(chosen);
 839                                chosen = NULL;
 840                                if (!del_list.nr) {
 841                                        clean_print_color(CLEAN_COLOR_ERROR);
 842                                        printf_ln(_("No more files to clean, exiting."));
 843                                        clean_print_color(CLEAN_COLOR_RESET);
 844                                        break;
 845                                }
 846                                continue;
 847                        }
 848                } else {
 849                        quit_cmd();
 850                }
 851
 852                free(chosen);
 853                chosen = NULL;
 854                break;
 855        }
 856}
 857
 858int cmd_clean(int argc, const char **argv, const char *prefix)
 859{
 860        int i, res;
 861        int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
 862        int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
 863        int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
 864        struct strbuf abs_path = STRBUF_INIT;
 865        struct dir_struct dir;
 866        struct pathspec pathspec;
 867        struct strbuf buf = STRBUF_INIT;
 868        struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 869        struct exclude_list *el;
 870        struct string_list_item *item;
 871        const char *qname;
 872        struct option options[] = {
 873                OPT__QUIET(&quiet, N_("do not print names of files removed")),
 874                OPT__DRY_RUN(&dry_run, N_("dry run")),
 875                OPT__FORCE(&force, N_("force")),
 876                OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
 877                OPT_BOOL('d', NULL, &remove_directories,
 878                                N_("remove whole directories")),
 879                { OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
 880                  N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
 881                OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
 882                OPT_BOOL('X', NULL, &ignored_only,
 883                                N_("remove only ignored files")),
 884                OPT_END()
 885        };
 886
 887        git_config(git_clean_config, NULL);
 888        if (force < 0)
 889                force = 0;
 890        else
 891                config_set = 1;
 892
 893        argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
 894                             0);
 895
 896        memset(&dir, 0, sizeof(dir));
 897        if (ignored_only)
 898                dir.flags |= DIR_SHOW_IGNORED;
 899
 900        if (ignored && ignored_only)
 901                die(_("-x and -X cannot be used together"));
 902
 903        if (!interactive && !dry_run && !force) {
 904                if (config_set)
 905                        die(_("clean.requireForce set to true and neither -i, -n, nor -f given; "
 906                                  "refusing to clean"));
 907                else
 908                        die(_("clean.requireForce defaults to true and neither -i, -n, nor -f given;"
 909                                  " refusing to clean"));
 910        }
 911
 912        if (force > 1)
 913                rm_flags = 0;
 914
 915        dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
 916
 917        if (read_cache() < 0)
 918                die(_("index file corrupt"));
 919
 920        if (!ignored)
 921                setup_standard_excludes(&dir);
 922
 923        el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 924        for (i = 0; i < exclude_list.nr; i++)
 925                add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
 926
 927        parse_pathspec(&pathspec, 0,
 928                       PATHSPEC_PREFER_CWD,
 929                       prefix, argv);
 930
 931        fill_directory(&dir, &pathspec);
 932
 933        for (i = 0; i < dir.nr; i++) {
 934                struct dir_entry *ent = dir.entries[i];
 935                int matches = 0;
 936                struct stat st;
 937                const char *rel;
 938
 939                if (!cache_name_is_other(ent->name, ent->len))
 940                        continue;
 941
 942                if (pathspec.nr)
 943                        matches = dir_path_match(ent, &pathspec, 0, NULL);
 944
 945                if (pathspec.nr && !matches)
 946                        continue;
 947
 948                if (lstat(ent->name, &st))
 949                        die_errno("Cannot lstat '%s'", ent->name);
 950
 951                if (S_ISDIR(st.st_mode) && !remove_directories &&
 952                    matches != MATCHED_EXACTLY)
 953                        continue;
 954
 955                rel = relative_path(ent->name, prefix, &buf);
 956                string_list_append(&del_list, rel);
 957        }
 958
 959        if (interactive && del_list.nr > 0)
 960                interactive_main_loop();
 961
 962        for_each_string_list_item(item, &del_list) {
 963                struct stat st;
 964
 965                if (prefix)
 966                        strbuf_addstr(&abs_path, prefix);
 967
 968                strbuf_addstr(&abs_path, item->string);
 969
 970                /*
 971                 * we might have removed this as part of earlier
 972                 * recursive directory removal, so lstat() here could
 973                 * fail with ENOENT.
 974                 */
 975                if (lstat(abs_path.buf, &st))
 976                        continue;
 977
 978                if (S_ISDIR(st.st_mode)) {
 979                        if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
 980                                errors++;
 981                        if (gone && !quiet) {
 982                                qname = quote_path_relative(item->string, NULL, &buf);
 983                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
 984                        }
 985                } else {
 986                        res = dry_run ? 0 : unlink(abs_path.buf);
 987                        if (res) {
 988                                qname = quote_path_relative(item->string, NULL, &buf);
 989                                warning(_(msg_warn_remove_failed), qname);
 990                                errors++;
 991                        } else if (!quiet) {
 992                                qname = quote_path_relative(item->string, NULL, &buf);
 993                                printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
 994                        }
 995                }
 996                strbuf_reset(&abs_path);
 997        }
 998
 999        strbuf_release(&abs_path);
1000        strbuf_release(&buf);
1001        string_list_clear(&del_list, 0);
1002        string_list_clear(&exclude_list, 0);
1003        return (errors != 0);
1004}