wt-status.con commit Merge branch 'tg/memfixes' (98c03a0)
   1#include "cache.h"
   2#include "wt-status.h"
   3#include "object.h"
   4#include "dir.h"
   5#include "commit.h"
   6#include "diff.h"
   7#include "revision.h"
   8#include "diffcore.h"
   9#include "quote.h"
  10#include "run-command.h"
  11#include "argv-array.h"
  12#include "remote.h"
  13#include "refs.h"
  14#include "submodule.h"
  15#include "column.h"
  16#include "strbuf.h"
  17#include "utf8.h"
  18#include "worktree.h"
  19#include "lockfile.h"
  20
  21static const char cut_line[] =
  22"------------------------ >8 ------------------------\n";
  23
  24static char default_wt_status_colors[][COLOR_MAXLEN] = {
  25        GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
  26        GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
  27        GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
  28        GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
  29        GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
  30        GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
  31        GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
  32        GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
  33        GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
  34};
  35
  36static const char *color(int slot, struct wt_status *s)
  37{
  38        const char *c = "";
  39        if (want_color(s->use_color))
  40                c = s->color_palette[slot];
  41        if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
  42                c = s->color_palette[WT_STATUS_HEADER];
  43        return c;
  44}
  45
  46static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
  47                const char *fmt, va_list ap, const char *trail)
  48{
  49        struct strbuf sb = STRBUF_INIT;
  50        struct strbuf linebuf = STRBUF_INIT;
  51        const char *line, *eol;
  52
  53        strbuf_vaddf(&sb, fmt, ap);
  54        if (!sb.len) {
  55                if (s->display_comment_prefix) {
  56                        strbuf_addch(&sb, comment_line_char);
  57                        if (!trail)
  58                                strbuf_addch(&sb, ' ');
  59                }
  60                color_print_strbuf(s->fp, color, &sb);
  61                if (trail)
  62                        fprintf(s->fp, "%s", trail);
  63                strbuf_release(&sb);
  64                return;
  65        }
  66        for (line = sb.buf; *line; line = eol + 1) {
  67                eol = strchr(line, '\n');
  68
  69                strbuf_reset(&linebuf);
  70                if (at_bol && s->display_comment_prefix) {
  71                        strbuf_addch(&linebuf, comment_line_char);
  72                        if (*line != '\n' && *line != '\t')
  73                                strbuf_addch(&linebuf, ' ');
  74                }
  75                if (eol)
  76                        strbuf_add(&linebuf, line, eol - line);
  77                else
  78                        strbuf_addstr(&linebuf, line);
  79                color_print_strbuf(s->fp, color, &linebuf);
  80                if (eol)
  81                        fprintf(s->fp, "\n");
  82                else
  83                        break;
  84                at_bol = 1;
  85        }
  86        if (trail)
  87                fprintf(s->fp, "%s", trail);
  88        strbuf_release(&linebuf);
  89        strbuf_release(&sb);
  90}
  91
  92void status_printf_ln(struct wt_status *s, const char *color,
  93                        const char *fmt, ...)
  94{
  95        va_list ap;
  96
  97        va_start(ap, fmt);
  98        status_vprintf(s, 1, color, fmt, ap, "\n");
  99        va_end(ap);
 100}
 101
 102void status_printf(struct wt_status *s, const char *color,
 103                        const char *fmt, ...)
 104{
 105        va_list ap;
 106
 107        va_start(ap, fmt);
 108        status_vprintf(s, 1, color, fmt, ap, NULL);
 109        va_end(ap);
 110}
 111
 112static void status_printf_more(struct wt_status *s, const char *color,
 113                               const char *fmt, ...)
 114{
 115        va_list ap;
 116
 117        va_start(ap, fmt);
 118        status_vprintf(s, 0, color, fmt, ap, NULL);
 119        va_end(ap);
 120}
 121
 122void wt_status_prepare(struct wt_status *s)
 123{
 124        memset(s, 0, sizeof(*s));
 125        memcpy(s->color_palette, default_wt_status_colors,
 126               sizeof(default_wt_status_colors));
 127        s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 128        s->use_color = -1;
 129        s->relative_paths = 1;
 130        s->branch = resolve_refdup("HEAD", 0, NULL, NULL);
 131        s->reference = "HEAD";
 132        s->fp = stdout;
 133        s->index_file = get_index_file();
 134        s->change.strdup_strings = 1;
 135        s->untracked.strdup_strings = 1;
 136        s->ignored.strdup_strings = 1;
 137        s->show_branch = -1;  /* unspecified */
 138        s->show_stash = 0;
 139        s->display_comment_prefix = 0;
 140}
 141
 142static void wt_longstatus_print_unmerged_header(struct wt_status *s)
 143{
 144        int i;
 145        int del_mod_conflict = 0;
 146        int both_deleted = 0;
 147        int not_deleted = 0;
 148        const char *c = color(WT_STATUS_HEADER, s);
 149
 150        status_printf_ln(s, c, _("Unmerged paths:"));
 151
 152        for (i = 0; i < s->change.nr; i++) {
 153                struct string_list_item *it = &(s->change.items[i]);
 154                struct wt_status_change_data *d = it->util;
 155
 156                switch (d->stagemask) {
 157                case 0:
 158                        break;
 159                case 1:
 160                        both_deleted = 1;
 161                        break;
 162                case 3:
 163                case 5:
 164                        del_mod_conflict = 1;
 165                        break;
 166                default:
 167                        not_deleted = 1;
 168                        break;
 169                }
 170        }
 171
 172        if (!s->hints)
 173                return;
 174        if (s->whence != FROM_COMMIT)
 175                ;
 176        else if (!s->is_initial)
 177                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 178        else
 179                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 180
 181        if (!both_deleted) {
 182                if (!del_mod_conflict)
 183                        status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
 184                else
 185                        status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 186        } else if (!del_mod_conflict && !not_deleted) {
 187                status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
 188        } else {
 189                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 190        }
 191        status_printf_ln(s, c, "%s", "");
 192}
 193
 194static void wt_longstatus_print_cached_header(struct wt_status *s)
 195{
 196        const char *c = color(WT_STATUS_HEADER, s);
 197
 198        status_printf_ln(s, c, _("Changes to be committed:"));
 199        if (!s->hints)
 200                return;
 201        if (s->whence != FROM_COMMIT)
 202                ; /* NEEDSWORK: use "git reset --unresolve"??? */
 203        else if (!s->is_initial)
 204                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 205        else
 206                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 207        status_printf_ln(s, c, "%s", "");
 208}
 209
 210static void wt_longstatus_print_dirty_header(struct wt_status *s,
 211                                             int has_deleted,
 212                                             int has_dirty_submodules)
 213{
 214        const char *c = color(WT_STATUS_HEADER, s);
 215
 216        status_printf_ln(s, c, _("Changes not staged for commit:"));
 217        if (!s->hints)
 218                return;
 219        if (!has_deleted)
 220                status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
 221        else
 222                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
 223        status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
 224        if (has_dirty_submodules)
 225                status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
 226        status_printf_ln(s, c, "%s", "");
 227}
 228
 229static void wt_longstatus_print_other_header(struct wt_status *s,
 230                                             const char *what,
 231                                             const char *how)
 232{
 233        const char *c = color(WT_STATUS_HEADER, s);
 234        status_printf_ln(s, c, "%s:", what);
 235        if (!s->hints)
 236                return;
 237        status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
 238        status_printf_ln(s, c, "%s", "");
 239}
 240
 241static void wt_longstatus_print_trailer(struct wt_status *s)
 242{
 243        status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 244}
 245
 246#define quote_path quote_path_relative
 247
 248static const char *wt_status_unmerged_status_string(int stagemask)
 249{
 250        switch (stagemask) {
 251        case 1:
 252                return _("both deleted:");
 253        case 2:
 254                return _("added by us:");
 255        case 3:
 256                return _("deleted by them:");
 257        case 4:
 258                return _("added by them:");
 259        case 5:
 260                return _("deleted by us:");
 261        case 6:
 262                return _("both added:");
 263        case 7:
 264                return _("both modified:");
 265        default:
 266                die("BUG: unhandled unmerged status %x", stagemask);
 267        }
 268}
 269
 270static const char *wt_status_diff_status_string(int status)
 271{
 272        switch (status) {
 273        case DIFF_STATUS_ADDED:
 274                return _("new file:");
 275        case DIFF_STATUS_COPIED:
 276                return _("copied:");
 277        case DIFF_STATUS_DELETED:
 278                return _("deleted:");
 279        case DIFF_STATUS_MODIFIED:
 280                return _("modified:");
 281        case DIFF_STATUS_RENAMED:
 282                return _("renamed:");
 283        case DIFF_STATUS_TYPE_CHANGED:
 284                return _("typechange:");
 285        case DIFF_STATUS_UNKNOWN:
 286                return _("unknown:");
 287        case DIFF_STATUS_UNMERGED:
 288                return _("unmerged:");
 289        default:
 290                return NULL;
 291        }
 292}
 293
 294static int maxwidth(const char *(*label)(int), int minval, int maxval)
 295{
 296        int result = 0, i;
 297
 298        for (i = minval; i <= maxval; i++) {
 299                const char *s = label(i);
 300                int len = s ? utf8_strwidth(s) : 0;
 301                if (len > result)
 302                        result = len;
 303        }
 304        return result;
 305}
 306
 307static void wt_longstatus_print_unmerged_data(struct wt_status *s,
 308                                              struct string_list_item *it)
 309{
 310        const char *c = color(WT_STATUS_UNMERGED, s);
 311        struct wt_status_change_data *d = it->util;
 312        struct strbuf onebuf = STRBUF_INIT;
 313        static char *padding;
 314        static int label_width;
 315        const char *one, *how;
 316        int len;
 317
 318        if (!padding) {
 319                label_width = maxwidth(wt_status_unmerged_status_string, 1, 7);
 320                label_width += strlen(" ");
 321                padding = xmallocz(label_width);
 322                memset(padding, ' ', label_width);
 323        }
 324
 325        one = quote_path(it->string, s->prefix, &onebuf);
 326        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 327
 328        how = wt_status_unmerged_status_string(d->stagemask);
 329        len = label_width - utf8_strwidth(how);
 330        status_printf_more(s, c, "%s%.*s%s\n", how, len, padding, one);
 331        strbuf_release(&onebuf);
 332}
 333
 334static void wt_longstatus_print_change_data(struct wt_status *s,
 335                                            int change_type,
 336                                            struct string_list_item *it)
 337{
 338        struct wt_status_change_data *d = it->util;
 339        const char *c = color(change_type, s);
 340        int status;
 341        char *one_name;
 342        char *two_name;
 343        const char *one, *two;
 344        struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
 345        struct strbuf extra = STRBUF_INIT;
 346        static char *padding;
 347        static int label_width;
 348        const char *what;
 349        int len;
 350
 351        if (!padding) {
 352                /* If DIFF_STATUS_* uses outside the range [A..Z], we're in trouble */
 353                label_width = maxwidth(wt_status_diff_status_string, 'A', 'Z');
 354                label_width += strlen(" ");
 355                padding = xmallocz(label_width);
 356                memset(padding, ' ', label_width);
 357        }
 358
 359        one_name = two_name = it->string;
 360        switch (change_type) {
 361        case WT_STATUS_UPDATED:
 362                status = d->index_status;
 363                if (d->head_path)
 364                        one_name = d->head_path;
 365                break;
 366        case WT_STATUS_CHANGED:
 367                if (d->new_submodule_commits || d->dirty_submodule) {
 368                        strbuf_addstr(&extra, " (");
 369                        if (d->new_submodule_commits)
 370                                strbuf_addstr(&extra, _("new commits, "));
 371                        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 372                                strbuf_addstr(&extra, _("modified content, "));
 373                        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 374                                strbuf_addstr(&extra, _("untracked content, "));
 375                        strbuf_setlen(&extra, extra.len - 2);
 376                        strbuf_addch(&extra, ')');
 377                }
 378                status = d->worktree_status;
 379                break;
 380        default:
 381                die("BUG: unhandled change_type %d in wt_longstatus_print_change_data",
 382                    change_type);
 383        }
 384
 385        one = quote_path(one_name, s->prefix, &onebuf);
 386        two = quote_path(two_name, s->prefix, &twobuf);
 387
 388        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 389        what = wt_status_diff_status_string(status);
 390        if (!what)
 391                die("BUG: unhandled diff status %c", status);
 392        len = label_width - utf8_strwidth(what);
 393        assert(len >= 0);
 394        if (status == DIFF_STATUS_COPIED || status == DIFF_STATUS_RENAMED)
 395                status_printf_more(s, c, "%s%.*s%s -> %s",
 396                                   what, len, padding, one, two);
 397        else
 398                status_printf_more(s, c, "%s%.*s%s",
 399                                   what, len, padding, one);
 400        if (extra.len) {
 401                status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 402                strbuf_release(&extra);
 403        }
 404        status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 405        strbuf_release(&onebuf);
 406        strbuf_release(&twobuf);
 407}
 408
 409static char short_submodule_status(struct wt_status_change_data *d) {
 410        if (d->new_submodule_commits)
 411                return 'M';
 412        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 413                return 'm';
 414        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 415                return '?';
 416        return d->worktree_status;
 417}
 418
 419static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 420                                         struct diff_options *options,
 421                                         void *data)
 422{
 423        struct wt_status *s = data;
 424        int i;
 425
 426        if (!q->nr)
 427                return;
 428        s->workdir_dirty = 1;
 429        for (i = 0; i < q->nr; i++) {
 430                struct diff_filepair *p;
 431                struct string_list_item *it;
 432                struct wt_status_change_data *d;
 433
 434                p = q->queue[i];
 435                it = string_list_insert(&s->change, p->one->path);
 436                d = it->util;
 437                if (!d) {
 438                        d = xcalloc(1, sizeof(*d));
 439                        it->util = d;
 440                }
 441                if (!d->worktree_status)
 442                        d->worktree_status = p->status;
 443                if (S_ISGITLINK(p->two->mode)) {
 444                        d->dirty_submodule = p->two->dirty_submodule;
 445                        d->new_submodule_commits = !!oidcmp(&p->one->oid,
 446                                                            &p->two->oid);
 447                        if (s->status_format == STATUS_FORMAT_SHORT)
 448                                d->worktree_status = short_submodule_status(d);
 449                }
 450
 451                switch (p->status) {
 452                case DIFF_STATUS_ADDED:
 453                        d->mode_worktree = p->two->mode;
 454                        break;
 455
 456                case DIFF_STATUS_DELETED:
 457                        d->mode_index = p->one->mode;
 458                        oidcpy(&d->oid_index, &p->one->oid);
 459                        /* mode_worktree is zero for a delete. */
 460                        break;
 461
 462                case DIFF_STATUS_MODIFIED:
 463                case DIFF_STATUS_TYPE_CHANGED:
 464                case DIFF_STATUS_UNMERGED:
 465                        d->mode_index = p->one->mode;
 466                        d->mode_worktree = p->two->mode;
 467                        oidcpy(&d->oid_index, &p->one->oid);
 468                        break;
 469
 470                case DIFF_STATUS_UNKNOWN:
 471                        die("BUG: worktree status unknown???");
 472                        break;
 473                }
 474
 475        }
 476}
 477
 478static int unmerged_mask(const char *path)
 479{
 480        int pos, mask;
 481        const struct cache_entry *ce;
 482
 483        pos = cache_name_pos(path, strlen(path));
 484        if (0 <= pos)
 485                return 0;
 486
 487        mask = 0;
 488        pos = -pos-1;
 489        while (pos < active_nr) {
 490                ce = active_cache[pos++];
 491                if (strcmp(ce->name, path) || !ce_stage(ce))
 492                        break;
 493                mask |= (1 << (ce_stage(ce) - 1));
 494        }
 495        return mask;
 496}
 497
 498static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 499                                         struct diff_options *options,
 500                                         void *data)
 501{
 502        struct wt_status *s = data;
 503        int i;
 504
 505        for (i = 0; i < q->nr; i++) {
 506                struct diff_filepair *p;
 507                struct string_list_item *it;
 508                struct wt_status_change_data *d;
 509
 510                p = q->queue[i];
 511                it = string_list_insert(&s->change, p->two->path);
 512                d = it->util;
 513                if (!d) {
 514                        d = xcalloc(1, sizeof(*d));
 515                        it->util = d;
 516                }
 517                if (!d->index_status)
 518                        d->index_status = p->status;
 519                switch (p->status) {
 520                case DIFF_STATUS_ADDED:
 521                        /* Leave {mode,oid}_head zero for an add. */
 522                        d->mode_index = p->two->mode;
 523                        oidcpy(&d->oid_index, &p->two->oid);
 524                        break;
 525                case DIFF_STATUS_DELETED:
 526                        d->mode_head = p->one->mode;
 527                        oidcpy(&d->oid_head, &p->one->oid);
 528                        /* Leave {mode,oid}_index zero for a delete. */
 529                        break;
 530
 531                case DIFF_STATUS_COPIED:
 532                case DIFF_STATUS_RENAMED:
 533                        d->head_path = xstrdup(p->one->path);
 534                        d->score = p->score * 100 / MAX_SCORE;
 535                        /* fallthru */
 536                case DIFF_STATUS_MODIFIED:
 537                case DIFF_STATUS_TYPE_CHANGED:
 538                        d->mode_head = p->one->mode;
 539                        d->mode_index = p->two->mode;
 540                        oidcpy(&d->oid_head, &p->one->oid);
 541                        oidcpy(&d->oid_index, &p->two->oid);
 542                        break;
 543                case DIFF_STATUS_UNMERGED:
 544                        d->stagemask = unmerged_mask(p->two->path);
 545                        /*
 546                         * Don't bother setting {mode,oid}_{head,index} since the print
 547                         * code will output the stage values directly and not use the
 548                         * values in these fields.
 549                         */
 550                        break;
 551                }
 552        }
 553}
 554
 555static void wt_status_collect_changes_worktree(struct wt_status *s)
 556{
 557        struct rev_info rev;
 558
 559        init_revisions(&rev, NULL);
 560        setup_revisions(0, NULL, &rev, NULL);
 561        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 562        DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
 563        rev.diffopt.ita_invisible_in_index = 1;
 564        if (!s->show_untracked_files)
 565                DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
 566        if (s->ignore_submodule_arg) {
 567                DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 568                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 569        }
 570        rev.diffopt.format_callback = wt_status_collect_changed_cb;
 571        rev.diffopt.format_callback_data = s;
 572        copy_pathspec(&rev.prune_data, &s->pathspec);
 573        run_diff_files(&rev, 0);
 574}
 575
 576static void wt_status_collect_changes_index(struct wt_status *s)
 577{
 578        struct rev_info rev;
 579        struct setup_revision_opt opt;
 580
 581        init_revisions(&rev, NULL);
 582        memset(&opt, 0, sizeof(opt));
 583        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 584        setup_revisions(0, NULL, &rev, &opt);
 585
 586        DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 587        rev.diffopt.ita_invisible_in_index = 1;
 588        if (s->ignore_submodule_arg) {
 589                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 590        } else {
 591                /*
 592                 * Unless the user did explicitly request a submodule ignore
 593                 * mode by passing a command line option we do not ignore any
 594                 * changed submodule SHA-1s when comparing index and HEAD, no
 595                 * matter what is configured. Otherwise the user won't be
 596                 * shown any submodules she manually added (and which are
 597                 * staged to be committed), which would be really confusing.
 598                 */
 599                handle_ignore_submodules_arg(&rev.diffopt, "dirty");
 600        }
 601
 602        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 603        rev.diffopt.format_callback = wt_status_collect_updated_cb;
 604        rev.diffopt.format_callback_data = s;
 605        rev.diffopt.detect_rename = 1;
 606        rev.diffopt.rename_limit = 200;
 607        rev.diffopt.break_opt = 0;
 608        copy_pathspec(&rev.prune_data, &s->pathspec);
 609        run_diff_index(&rev, 1);
 610}
 611
 612static void wt_status_collect_changes_initial(struct wt_status *s)
 613{
 614        int i;
 615
 616        for (i = 0; i < active_nr; i++) {
 617                struct string_list_item *it;
 618                struct wt_status_change_data *d;
 619                const struct cache_entry *ce = active_cache[i];
 620
 621                if (!ce_path_match(ce, &s->pathspec, NULL))
 622                        continue;
 623                if (ce_intent_to_add(ce))
 624                        continue;
 625                it = string_list_insert(&s->change, ce->name);
 626                d = it->util;
 627                if (!d) {
 628                        d = xcalloc(1, sizeof(*d));
 629                        it->util = d;
 630                }
 631                if (ce_stage(ce)) {
 632                        d->index_status = DIFF_STATUS_UNMERGED;
 633                        d->stagemask |= (1 << (ce_stage(ce) - 1));
 634                        /*
 635                         * Don't bother setting {mode,oid}_{head,index} since the print
 636                         * code will output the stage values directly and not use the
 637                         * values in these fields.
 638                         */
 639                } else {
 640                        d->index_status = DIFF_STATUS_ADDED;
 641                        /* Leave {mode,oid}_head zero for adds. */
 642                        d->mode_index = ce->ce_mode;
 643                        oidcpy(&d->oid_index, &ce->oid);
 644                }
 645        }
 646}
 647
 648static void wt_status_collect_untracked(struct wt_status *s)
 649{
 650        int i;
 651        struct dir_struct dir;
 652        uint64_t t_begin = getnanotime();
 653
 654        if (!s->show_untracked_files)
 655                return;
 656
 657        memset(&dir, 0, sizeof(dir));
 658        if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 659                dir.flags |=
 660                        DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 661        if (s->show_ignored_files)
 662                dir.flags |= DIR_SHOW_IGNORED_TOO;
 663        else
 664                dir.untracked = the_index.untracked;
 665        setup_standard_excludes(&dir);
 666
 667        fill_directory(&dir, &the_index, &s->pathspec);
 668
 669        for (i = 0; i < dir.nr; i++) {
 670                struct dir_entry *ent = dir.entries[i];
 671                if (cache_name_is_other(ent->name, ent->len) &&
 672                    dir_path_match(ent, &s->pathspec, 0, NULL))
 673                        string_list_insert(&s->untracked, ent->name);
 674                free(ent);
 675        }
 676
 677        for (i = 0; i < dir.ignored_nr; i++) {
 678                struct dir_entry *ent = dir.ignored[i];
 679                if (cache_name_is_other(ent->name, ent->len) &&
 680                    dir_path_match(ent, &s->pathspec, 0, NULL))
 681                        string_list_insert(&s->ignored, ent->name);
 682                free(ent);
 683        }
 684
 685        free(dir.entries);
 686        free(dir.ignored);
 687        clear_directory(&dir);
 688
 689        if (advice_status_u_option)
 690                s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 691}
 692
 693void wt_status_collect(struct wt_status *s)
 694{
 695        wt_status_collect_changes_worktree(s);
 696
 697        if (s->is_initial)
 698                wt_status_collect_changes_initial(s);
 699        else
 700                wt_status_collect_changes_index(s);
 701        wt_status_collect_untracked(s);
 702}
 703
 704static void wt_longstatus_print_unmerged(struct wt_status *s)
 705{
 706        int shown_header = 0;
 707        int i;
 708
 709        for (i = 0; i < s->change.nr; i++) {
 710                struct wt_status_change_data *d;
 711                struct string_list_item *it;
 712                it = &(s->change.items[i]);
 713                d = it->util;
 714                if (!d->stagemask)
 715                        continue;
 716                if (!shown_header) {
 717                        wt_longstatus_print_unmerged_header(s);
 718                        shown_header = 1;
 719                }
 720                wt_longstatus_print_unmerged_data(s, it);
 721        }
 722        if (shown_header)
 723                wt_longstatus_print_trailer(s);
 724
 725}
 726
 727static void wt_longstatus_print_updated(struct wt_status *s)
 728{
 729        int shown_header = 0;
 730        int i;
 731
 732        for (i = 0; i < s->change.nr; i++) {
 733                struct wt_status_change_data *d;
 734                struct string_list_item *it;
 735                it = &(s->change.items[i]);
 736                d = it->util;
 737                if (!d->index_status ||
 738                    d->index_status == DIFF_STATUS_UNMERGED)
 739                        continue;
 740                if (!shown_header) {
 741                        wt_longstatus_print_cached_header(s);
 742                        s->commitable = 1;
 743                        shown_header = 1;
 744                }
 745                wt_longstatus_print_change_data(s, WT_STATUS_UPDATED, it);
 746        }
 747        if (shown_header)
 748                wt_longstatus_print_trailer(s);
 749}
 750
 751/*
 752 * -1 : has delete
 753 *  0 : no change
 754 *  1 : some change but no delete
 755 */
 756static int wt_status_check_worktree_changes(struct wt_status *s,
 757                                             int *dirty_submodules)
 758{
 759        int i;
 760        int changes = 0;
 761
 762        *dirty_submodules = 0;
 763
 764        for (i = 0; i < s->change.nr; i++) {
 765                struct wt_status_change_data *d;
 766                d = s->change.items[i].util;
 767                if (!d->worktree_status ||
 768                    d->worktree_status == DIFF_STATUS_UNMERGED)
 769                        continue;
 770                if (!changes)
 771                        changes = 1;
 772                if (d->dirty_submodule)
 773                        *dirty_submodules = 1;
 774                if (d->worktree_status == DIFF_STATUS_DELETED)
 775                        changes = -1;
 776        }
 777        return changes;
 778}
 779
 780static void wt_longstatus_print_changed(struct wt_status *s)
 781{
 782        int i, dirty_submodules;
 783        int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 784
 785        if (!worktree_changes)
 786                return;
 787
 788        wt_longstatus_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 789
 790        for (i = 0; i < s->change.nr; i++) {
 791                struct wt_status_change_data *d;
 792                struct string_list_item *it;
 793                it = &(s->change.items[i]);
 794                d = it->util;
 795                if (!d->worktree_status ||
 796                    d->worktree_status == DIFF_STATUS_UNMERGED)
 797                        continue;
 798                wt_longstatus_print_change_data(s, WT_STATUS_CHANGED, it);
 799        }
 800        wt_longstatus_print_trailer(s);
 801}
 802
 803static int stash_count_refs(struct object_id *ooid, struct object_id *noid,
 804                            const char *email, timestamp_t timestamp, int tz,
 805                            const char *message, void *cb_data)
 806{
 807        int *c = cb_data;
 808        (*c)++;
 809        return 0;
 810}
 811
 812static void wt_longstatus_print_stash_summary(struct wt_status *s)
 813{
 814        int stash_count = 0;
 815
 816        for_each_reflog_ent("refs/stash", stash_count_refs, &stash_count);
 817        if (stash_count > 0)
 818                status_printf_ln(s, GIT_COLOR_NORMAL,
 819                                 Q_("Your stash currently has %d entry",
 820                                    "Your stash currently has %d entries", stash_count),
 821                                 stash_count);
 822}
 823
 824static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncommitted)
 825{
 826        struct child_process sm_summary = CHILD_PROCESS_INIT;
 827        struct strbuf cmd_stdout = STRBUF_INIT;
 828        struct strbuf summary = STRBUF_INIT;
 829        char *summary_content;
 830
 831        argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 832                         s->index_file);
 833
 834        argv_array_push(&sm_summary.args, "submodule");
 835        argv_array_push(&sm_summary.args, "summary");
 836        argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 837        argv_array_push(&sm_summary.args, "--for-status");
 838        argv_array_push(&sm_summary.args, "--summary-limit");
 839        argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 840        if (!uncommitted)
 841                argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 842
 843        sm_summary.git_cmd = 1;
 844        sm_summary.no_stdin = 1;
 845
 846        capture_command(&sm_summary, &cmd_stdout, 1024);
 847
 848        /* prepend header, only if there's an actual output */
 849        if (cmd_stdout.len) {
 850                if (uncommitted)
 851                        strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 852                else
 853                        strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 854                strbuf_addstr(&summary, "\n\n");
 855        }
 856        strbuf_addbuf(&summary, &cmd_stdout);
 857        strbuf_release(&cmd_stdout);
 858
 859        if (s->display_comment_prefix) {
 860                size_t len;
 861                summary_content = strbuf_detach(&summary, &len);
 862                strbuf_add_commented_lines(&summary, summary_content, len);
 863                free(summary_content);
 864        }
 865
 866        fputs(summary.buf, s->fp);
 867        strbuf_release(&summary);
 868}
 869
 870static void wt_longstatus_print_other(struct wt_status *s,
 871                                      struct string_list *l,
 872                                      const char *what,
 873                                      const char *how)
 874{
 875        int i;
 876        struct strbuf buf = STRBUF_INIT;
 877        static struct string_list output = STRING_LIST_INIT_DUP;
 878        struct column_options copts;
 879
 880        if (!l->nr)
 881                return;
 882
 883        wt_longstatus_print_other_header(s, what, how);
 884
 885        for (i = 0; i < l->nr; i++) {
 886                struct string_list_item *it;
 887                const char *path;
 888                it = &(l->items[i]);
 889                path = quote_path(it->string, s->prefix, &buf);
 890                if (column_active(s->colopts)) {
 891                        string_list_append(&output, path);
 892                        continue;
 893                }
 894                status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 895                status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 896                                   "%s\n", path);
 897        }
 898
 899        strbuf_release(&buf);
 900        if (!column_active(s->colopts))
 901                goto conclude;
 902
 903        strbuf_addf(&buf, "%s%s\t%s",
 904                    color(WT_STATUS_HEADER, s),
 905                    s->display_comment_prefix ? "#" : "",
 906                    color(WT_STATUS_UNTRACKED, s));
 907        memset(&copts, 0, sizeof(copts));
 908        copts.padding = 1;
 909        copts.indent = buf.buf;
 910        if (want_color(s->use_color))
 911                copts.nl = GIT_COLOR_RESET "\n";
 912        print_columns(&output, s->colopts, &copts);
 913        string_list_clear(&output, 0);
 914        strbuf_release(&buf);
 915conclude:
 916        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 917}
 918
 919size_t wt_status_locate_end(const char *s, size_t len)
 920{
 921        const char *p;
 922        struct strbuf pattern = STRBUF_INIT;
 923
 924        strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
 925        if (starts_with(s, pattern.buf + 1))
 926                len = 0;
 927        else if ((p = strstr(s, pattern.buf)))
 928                len = p - s + 1;
 929        strbuf_release(&pattern);
 930        return len;
 931}
 932
 933void wt_status_add_cut_line(FILE *fp)
 934{
 935        const char *explanation = _("Do not modify or remove the line above.\nEverything below it will be ignored.");
 936        struct strbuf buf = STRBUF_INIT;
 937
 938        fprintf(fp, "%c %s", comment_line_char, cut_line);
 939        strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
 940        fputs(buf.buf, fp);
 941        strbuf_release(&buf);
 942}
 943
 944static void wt_longstatus_print_verbose(struct wt_status *s)
 945{
 946        struct rev_info rev;
 947        struct setup_revision_opt opt;
 948        int dirty_submodules;
 949        const char *c = color(WT_STATUS_HEADER, s);
 950
 951        init_revisions(&rev, NULL);
 952        DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
 953        rev.diffopt.ita_invisible_in_index = 1;
 954
 955        memset(&opt, 0, sizeof(opt));
 956        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 957        setup_revisions(0, NULL, &rev, &opt);
 958
 959        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 960        rev.diffopt.detect_rename = 1;
 961        rev.diffopt.file = s->fp;
 962        rev.diffopt.close_file = 0;
 963        /*
 964         * If we're not going to stdout, then we definitely don't
 965         * want color, since we are going to the commit message
 966         * file (and even the "auto" setting won't work, since it
 967         * will have checked isatty on stdout). But we then do want
 968         * to insert the scissor line here to reliably remove the
 969         * diff before committing.
 970         */
 971        if (s->fp != stdout) {
 972                rev.diffopt.use_color = 0;
 973                wt_status_add_cut_line(s->fp);
 974        }
 975        if (s->verbose > 1 && s->commitable) {
 976                /* print_updated() printed a header, so do we */
 977                if (s->fp != stdout)
 978                        wt_longstatus_print_trailer(s);
 979                status_printf_ln(s, c, _("Changes to be committed:"));
 980                rev.diffopt.a_prefix = "c/";
 981                rev.diffopt.b_prefix = "i/";
 982        } /* else use prefix as per user config */
 983        run_diff_index(&rev, 1);
 984        if (s->verbose > 1 &&
 985            wt_status_check_worktree_changes(s, &dirty_submodules)) {
 986                status_printf_ln(s, c,
 987                        "--------------------------------------------------");
 988                status_printf_ln(s, c, _("Changes not staged for commit:"));
 989                setup_work_tree();
 990                rev.diffopt.a_prefix = "i/";
 991                rev.diffopt.b_prefix = "w/";
 992                run_diff_files(&rev, 0);
 993        }
 994}
 995
 996static void wt_longstatus_print_tracking(struct wt_status *s)
 997{
 998        struct strbuf sb = STRBUF_INIT;
 999        const char *cp, *ep, *branch_name;
1000        struct branch *branch;
1001        char comment_line_string[3];
1002        int i;
1003
1004        assert(s->branch && !s->is_initial);
1005        if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
1006                return;
1007        branch = branch_get(branch_name);
1008        if (!format_tracking_info(branch, &sb))
1009                return;
1010
1011        i = 0;
1012        if (s->display_comment_prefix) {
1013                comment_line_string[i++] = comment_line_char;
1014                comment_line_string[i++] = ' ';
1015        }
1016        comment_line_string[i] = '\0';
1017
1018        for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
1019                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
1020                                 "%s%.*s", comment_line_string,
1021                                 (int)(ep - cp), cp);
1022        if (s->display_comment_prefix)
1023                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
1024                                 comment_line_char);
1025        else
1026                fputs("\n", s->fp);
1027        strbuf_release(&sb);
1028}
1029
1030static int has_unmerged(struct wt_status *s)
1031{
1032        int i;
1033
1034        for (i = 0; i < s->change.nr; i++) {
1035                struct wt_status_change_data *d;
1036                d = s->change.items[i].util;
1037                if (d->stagemask)
1038                        return 1;
1039        }
1040        return 0;
1041}
1042
1043static void show_merge_in_progress(struct wt_status *s,
1044                                struct wt_status_state *state,
1045                                const char *color)
1046{
1047        if (has_unmerged(s)) {
1048                status_printf_ln(s, color, _("You have unmerged paths."));
1049                if (s->hints) {
1050                        status_printf_ln(s, color,
1051                                         _("  (fix conflicts and run \"git commit\")"));
1052                        status_printf_ln(s, color,
1053                                         _("  (use \"git merge --abort\" to abort the merge)"));
1054                }
1055        } else {
1056                s-> commitable = 1;
1057                status_printf_ln(s, color,
1058                        _("All conflicts fixed but you are still merging."));
1059                if (s->hints)
1060                        status_printf_ln(s, color,
1061                                _("  (use \"git commit\" to conclude merge)"));
1062        }
1063        wt_longstatus_print_trailer(s);
1064}
1065
1066static void show_am_in_progress(struct wt_status *s,
1067                                struct wt_status_state *state,
1068                                const char *color)
1069{
1070        status_printf_ln(s, color,
1071                _("You are in the middle of an am session."));
1072        if (state->am_empty_patch)
1073                status_printf_ln(s, color,
1074                        _("The current patch is empty."));
1075        if (s->hints) {
1076                if (!state->am_empty_patch)
1077                        status_printf_ln(s, color,
1078                                _("  (fix conflicts and then run \"git am --continue\")"));
1079                status_printf_ln(s, color,
1080                        _("  (use \"git am --skip\" to skip this patch)"));
1081                status_printf_ln(s, color,
1082                        _("  (use \"git am --abort\" to restore the original branch)"));
1083        }
1084        wt_longstatus_print_trailer(s);
1085}
1086
1087static char *read_line_from_git_path(const char *filename)
1088{
1089        struct strbuf buf = STRBUF_INIT;
1090        FILE *fp = fopen_or_warn(git_path("%s", filename), "r");
1091
1092        if (!fp) {
1093                strbuf_release(&buf);
1094                return NULL;
1095        }
1096        strbuf_getline_lf(&buf, fp);
1097        if (!fclose(fp)) {
1098                return strbuf_detach(&buf, NULL);
1099        } else {
1100                strbuf_release(&buf);
1101                return NULL;
1102        }
1103}
1104
1105static int split_commit_in_progress(struct wt_status *s)
1106{
1107        int split_in_progress = 0;
1108        char *head, *orig_head, *rebase_amend, *rebase_orig_head;
1109
1110        if ((!s->amend && !s->nowarn && !s->workdir_dirty) ||
1111            !s->branch || strcmp(s->branch, "HEAD"))
1112                return 0;
1113
1114        head = read_line_from_git_path("HEAD");
1115        orig_head = read_line_from_git_path("ORIG_HEAD");
1116        rebase_amend = read_line_from_git_path("rebase-merge/amend");
1117        rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1118
1119        if (!head || !orig_head || !rebase_amend || !rebase_orig_head)
1120                ; /* fall through, no split in progress */
1121        else if (!strcmp(rebase_amend, rebase_orig_head))
1122                split_in_progress = !!strcmp(head, rebase_amend);
1123        else if (strcmp(orig_head, rebase_orig_head))
1124                split_in_progress = 1;
1125
1126        free(head);
1127        free(orig_head);
1128        free(rebase_amend);
1129        free(rebase_orig_head);
1130
1131        return split_in_progress;
1132}
1133
1134/*
1135 * Turn
1136 * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1137 * into
1138 * "pick d6a2f03 some message"
1139 *
1140 * The function assumes that the line does not contain useless spaces
1141 * before or after the command.
1142 */
1143static void abbrev_sha1_in_line(struct strbuf *line)
1144{
1145        struct strbuf **split;
1146        int i;
1147
1148        if (starts_with(line->buf, "exec ") ||
1149            starts_with(line->buf, "x "))
1150                return;
1151
1152        split = strbuf_split_max(line, ' ', 3);
1153        if (split[0] && split[1]) {
1154                struct object_id oid;
1155
1156                /*
1157                 * strbuf_split_max left a space. Trim it and re-add
1158                 * it after abbreviation.
1159                 */
1160                strbuf_trim(split[1]);
1161                if (!get_oid(split[1]->buf, &oid)) {
1162                        strbuf_reset(split[1]);
1163                        strbuf_add_unique_abbrev(split[1], oid.hash,
1164                                                 DEFAULT_ABBREV);
1165                        strbuf_addch(split[1], ' ');
1166                        strbuf_reset(line);
1167                        for (i = 0; split[i]; i++)
1168                                strbuf_addbuf(line, split[i]);
1169                }
1170        }
1171        strbuf_list_free(split);
1172}
1173
1174static int read_rebase_todolist(const char *fname, struct string_list *lines)
1175{
1176        struct strbuf line = STRBUF_INIT;
1177        FILE *f = fopen(git_path("%s", fname), "r");
1178
1179        if (!f) {
1180                if (errno == ENOENT)
1181                        return -1;
1182                die_errno("Could not open file %s for reading",
1183                          git_path("%s", fname));
1184        }
1185        while (!strbuf_getline_lf(&line, f)) {
1186                if (line.len && line.buf[0] == comment_line_char)
1187                        continue;
1188                strbuf_trim(&line);
1189                if (!line.len)
1190                        continue;
1191                abbrev_sha1_in_line(&line);
1192                string_list_append(lines, line.buf);
1193        }
1194        fclose(f);
1195        strbuf_release(&line);
1196        return 0;
1197}
1198
1199static void show_rebase_information(struct wt_status *s,
1200                                        struct wt_status_state *state,
1201                                        const char *color)
1202{
1203        if (state->rebase_interactive_in_progress) {
1204                int i;
1205                int nr_lines_to_show = 2;
1206
1207                struct string_list have_done = STRING_LIST_INIT_DUP;
1208                struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1209
1210                read_rebase_todolist("rebase-merge/done", &have_done);
1211                if (read_rebase_todolist("rebase-merge/git-rebase-todo",
1212                                         &yet_to_do))
1213                        status_printf_ln(s, color,
1214                                _("git-rebase-todo is missing."));
1215                if (have_done.nr == 0)
1216                        status_printf_ln(s, color, _("No commands done."));
1217                else {
1218                        status_printf_ln(s, color,
1219                                Q_("Last command done (%d command done):",
1220                                        "Last commands done (%d commands done):",
1221                                        have_done.nr),
1222                                have_done.nr);
1223                        for (i = (have_done.nr > nr_lines_to_show)
1224                                ? have_done.nr - nr_lines_to_show : 0;
1225                                i < have_done.nr;
1226                                i++)
1227                                status_printf_ln(s, color, "   %s", have_done.items[i].string);
1228                        if (have_done.nr > nr_lines_to_show && s->hints)
1229                                status_printf_ln(s, color,
1230                                        _("  (see more in file %s)"), git_path("rebase-merge/done"));
1231                }
1232
1233                if (yet_to_do.nr == 0)
1234                        status_printf_ln(s, color,
1235                                         _("No commands remaining."));
1236                else {
1237                        status_printf_ln(s, color,
1238                                Q_("Next command to do (%d remaining command):",
1239                                        "Next commands to do (%d remaining commands):",
1240                                        yet_to_do.nr),
1241                                yet_to_do.nr);
1242                        for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1243                                status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1244                        if (s->hints)
1245                                status_printf_ln(s, color,
1246                                        _("  (use \"git rebase --edit-todo\" to view and edit)"));
1247                }
1248                string_list_clear(&yet_to_do, 0);
1249                string_list_clear(&have_done, 0);
1250        }
1251}
1252
1253static void print_rebase_state(struct wt_status *s,
1254                                struct wt_status_state *state,
1255                                const char *color)
1256{
1257        if (state->branch)
1258                status_printf_ln(s, color,
1259                                 _("You are currently rebasing branch '%s' on '%s'."),
1260                                 state->branch,
1261                                 state->onto);
1262        else
1263                status_printf_ln(s, color,
1264                                 _("You are currently rebasing."));
1265}
1266
1267static void show_rebase_in_progress(struct wt_status *s,
1268                                struct wt_status_state *state,
1269                                const char *color)
1270{
1271        struct stat st;
1272
1273        show_rebase_information(s, state, color);
1274        if (has_unmerged(s)) {
1275                print_rebase_state(s, state, color);
1276                if (s->hints) {
1277                        status_printf_ln(s, color,
1278                                _("  (fix conflicts and then run \"git rebase --continue\")"));
1279                        status_printf_ln(s, color,
1280                                _("  (use \"git rebase --skip\" to skip this patch)"));
1281                        status_printf_ln(s, color,
1282                                _("  (use \"git rebase --abort\" to check out the original branch)"));
1283                }
1284        } else if (state->rebase_in_progress || !stat(git_path_merge_msg(), &st)) {
1285                print_rebase_state(s, state, color);
1286                if (s->hints)
1287                        status_printf_ln(s, color,
1288                                _("  (all conflicts fixed: run \"git rebase --continue\")"));
1289        } else if (split_commit_in_progress(s)) {
1290                if (state->branch)
1291                        status_printf_ln(s, color,
1292                                         _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1293                                         state->branch,
1294                                         state->onto);
1295                else
1296                        status_printf_ln(s, color,
1297                                         _("You are currently splitting a commit during a rebase."));
1298                if (s->hints)
1299                        status_printf_ln(s, color,
1300                                _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1301        } else {
1302                if (state->branch)
1303                        status_printf_ln(s, color,
1304                                         _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1305                                         state->branch,
1306                                         state->onto);
1307                else
1308                        status_printf_ln(s, color,
1309                                         _("You are currently editing a commit during a rebase."));
1310                if (s->hints && !s->amend) {
1311                        status_printf_ln(s, color,
1312                                _("  (use \"git commit --amend\" to amend the current commit)"));
1313                        status_printf_ln(s, color,
1314                                _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1315                }
1316        }
1317        wt_longstatus_print_trailer(s);
1318}
1319
1320static void show_cherry_pick_in_progress(struct wt_status *s,
1321                                        struct wt_status_state *state,
1322                                        const char *color)
1323{
1324        status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1325                        find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1326        if (s->hints) {
1327                if (has_unmerged(s))
1328                        status_printf_ln(s, color,
1329                                _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1330                else
1331                        status_printf_ln(s, color,
1332                                _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1333                status_printf_ln(s, color,
1334                        _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1335        }
1336        wt_longstatus_print_trailer(s);
1337}
1338
1339static void show_revert_in_progress(struct wt_status *s,
1340                                        struct wt_status_state *state,
1341                                        const char *color)
1342{
1343        status_printf_ln(s, color, _("You are currently reverting commit %s."),
1344                         find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1345        if (s->hints) {
1346                if (has_unmerged(s))
1347                        status_printf_ln(s, color,
1348                                _("  (fix conflicts and run \"git revert --continue\")"));
1349                else
1350                        status_printf_ln(s, color,
1351                                _("  (all conflicts fixed: run \"git revert --continue\")"));
1352                status_printf_ln(s, color,
1353                        _("  (use \"git revert --abort\" to cancel the revert operation)"));
1354        }
1355        wt_longstatus_print_trailer(s);
1356}
1357
1358static void show_bisect_in_progress(struct wt_status *s,
1359                                struct wt_status_state *state,
1360                                const char *color)
1361{
1362        if (state->branch)
1363                status_printf_ln(s, color,
1364                                 _("You are currently bisecting, started from branch '%s'."),
1365                                 state->branch);
1366        else
1367                status_printf_ln(s, color,
1368                                 _("You are currently bisecting."));
1369        if (s->hints)
1370                status_printf_ln(s, color,
1371                        _("  (use \"git bisect reset\" to get back to the original branch)"));
1372        wt_longstatus_print_trailer(s);
1373}
1374
1375/*
1376 * Extract branch information from rebase/bisect
1377 */
1378static char *get_branch(const struct worktree *wt, const char *path)
1379{
1380        struct strbuf sb = STRBUF_INIT;
1381        struct object_id oid;
1382        const char *branch_name;
1383
1384        if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
1385                goto got_nothing;
1386
1387        while (sb.len && sb.buf[sb.len - 1] == '\n')
1388                strbuf_setlen(&sb, sb.len - 1);
1389        if (!sb.len)
1390                goto got_nothing;
1391        if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1392                strbuf_remove(&sb, 0, branch_name - sb.buf);
1393        else if (starts_with(sb.buf, "refs/"))
1394                ;
1395        else if (!get_oid_hex(sb.buf, &oid)) {
1396                strbuf_reset(&sb);
1397                strbuf_add_unique_abbrev(&sb, oid.hash, DEFAULT_ABBREV);
1398        } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1399                goto got_nothing;
1400        else                    /* bisect */
1401                ;
1402        return strbuf_detach(&sb, NULL);
1403
1404got_nothing:
1405        strbuf_release(&sb);
1406        return NULL;
1407}
1408
1409struct grab_1st_switch_cbdata {
1410        struct strbuf buf;
1411        struct object_id noid;
1412};
1413
1414static int grab_1st_switch(struct object_id *ooid, struct object_id *noid,
1415                           const char *email, timestamp_t timestamp, int tz,
1416                           const char *message, void *cb_data)
1417{
1418        struct grab_1st_switch_cbdata *cb = cb_data;
1419        const char *target = NULL, *end;
1420
1421        if (!skip_prefix(message, "checkout: moving from ", &message))
1422                return 0;
1423        target = strstr(message, " to ");
1424        if (!target)
1425                return 0;
1426        target += strlen(" to ");
1427        strbuf_reset(&cb->buf);
1428        oidcpy(&cb->noid, noid);
1429        end = strchrnul(target, '\n');
1430        strbuf_add(&cb->buf, target, end - target);
1431        if (!strcmp(cb->buf.buf, "HEAD")) {
1432                /* HEAD is relative. Resolve it to the right reflog entry. */
1433                strbuf_reset(&cb->buf);
1434                strbuf_add_unique_abbrev(&cb->buf, noid->hash, DEFAULT_ABBREV);
1435        }
1436        return 1;
1437}
1438
1439static void wt_status_get_detached_from(struct wt_status_state *state)
1440{
1441        struct grab_1st_switch_cbdata cb;
1442        struct commit *commit;
1443        struct object_id oid;
1444        char *ref = NULL;
1445
1446        strbuf_init(&cb.buf, 0);
1447        if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1448                strbuf_release(&cb.buf);
1449                return;
1450        }
1451
1452        if (dwim_ref(cb.buf.buf, cb.buf.len, oid.hash, &ref) == 1 &&
1453            /* sha1 is a commit? match without further lookup */
1454            (!oidcmp(&cb.noid, &oid) ||
1455             /* perhaps sha1 is a tag, try to dereference to a commit */
1456             ((commit = lookup_commit_reference_gently(&oid, 1)) != NULL &&
1457              !oidcmp(&cb.noid, &commit->object.oid)))) {
1458                const char *from = ref;
1459                if (!skip_prefix(from, "refs/tags/", &from))
1460                        skip_prefix(from, "refs/remotes/", &from);
1461                state->detached_from = xstrdup(from);
1462        } else
1463                state->detached_from =
1464                        xstrdup(find_unique_abbrev(cb.noid.hash, DEFAULT_ABBREV));
1465        hashcpy(state->detached_sha1, cb.noid.hash);
1466        state->detached_at = !get_oid("HEAD", &oid) &&
1467                             !hashcmp(oid.hash, state->detached_sha1);
1468
1469        free(ref);
1470        strbuf_release(&cb.buf);
1471}
1472
1473int wt_status_check_rebase(const struct worktree *wt,
1474                           struct wt_status_state *state)
1475{
1476        struct stat st;
1477
1478        if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
1479                if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
1480                        state->am_in_progress = 1;
1481                        if (!stat(worktree_git_path(wt, "rebase-apply/patch"), &st) && !st.st_size)
1482                                state->am_empty_patch = 1;
1483                } else {
1484                        state->rebase_in_progress = 1;
1485                        state->branch = get_branch(wt, "rebase-apply/head-name");
1486                        state->onto = get_branch(wt, "rebase-apply/onto");
1487                }
1488        } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
1489                if (!stat(worktree_git_path(wt, "rebase-merge/interactive"), &st))
1490                        state->rebase_interactive_in_progress = 1;
1491                else
1492                        state->rebase_in_progress = 1;
1493                state->branch = get_branch(wt, "rebase-merge/head-name");
1494                state->onto = get_branch(wt, "rebase-merge/onto");
1495        } else
1496                return 0;
1497        return 1;
1498}
1499
1500int wt_status_check_bisect(const struct worktree *wt,
1501                           struct wt_status_state *state)
1502{
1503        struct stat st;
1504
1505        if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
1506                state->bisect_in_progress = 1;
1507                state->branch = get_branch(wt, "BISECT_START");
1508                return 1;
1509        }
1510        return 0;
1511}
1512
1513void wt_status_get_state(struct wt_status_state *state,
1514                         int get_detached_from)
1515{
1516        struct stat st;
1517        struct object_id oid;
1518
1519        if (!stat(git_path_merge_head(), &st)) {
1520                state->merge_in_progress = 1;
1521        } else if (wt_status_check_rebase(NULL, state)) {
1522                ;               /* all set */
1523        } else if (!stat(git_path_cherry_pick_head(), &st) &&
1524                        !get_oid("CHERRY_PICK_HEAD", &oid)) {
1525                state->cherry_pick_in_progress = 1;
1526                hashcpy(state->cherry_pick_head_sha1, oid.hash);
1527        }
1528        wt_status_check_bisect(NULL, state);
1529        if (!stat(git_path_revert_head(), &st) &&
1530            !get_oid("REVERT_HEAD", &oid)) {
1531                state->revert_in_progress = 1;
1532                hashcpy(state->revert_head_sha1, oid.hash);
1533        }
1534
1535        if (get_detached_from)
1536                wt_status_get_detached_from(state);
1537}
1538
1539static void wt_longstatus_print_state(struct wt_status *s,
1540                                      struct wt_status_state *state)
1541{
1542        const char *state_color = color(WT_STATUS_HEADER, s);
1543        if (state->merge_in_progress)
1544                show_merge_in_progress(s, state, state_color);
1545        else if (state->am_in_progress)
1546                show_am_in_progress(s, state, state_color);
1547        else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1548                show_rebase_in_progress(s, state, state_color);
1549        else if (state->cherry_pick_in_progress)
1550                show_cherry_pick_in_progress(s, state, state_color);
1551        else if (state->revert_in_progress)
1552                show_revert_in_progress(s, state, state_color);
1553        if (state->bisect_in_progress)
1554                show_bisect_in_progress(s, state, state_color);
1555}
1556
1557static void wt_longstatus_print(struct wt_status *s)
1558{
1559        const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1560        const char *branch_status_color = color(WT_STATUS_HEADER, s);
1561        struct wt_status_state state;
1562
1563        memset(&state, 0, sizeof(state));
1564        wt_status_get_state(&state,
1565                            s->branch && !strcmp(s->branch, "HEAD"));
1566
1567        if (s->branch) {
1568                const char *on_what = _("On branch ");
1569                const char *branch_name = s->branch;
1570                if (!strcmp(branch_name, "HEAD")) {
1571                        branch_status_color = color(WT_STATUS_NOBRANCH, s);
1572                        if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1573                                if (state.rebase_interactive_in_progress)
1574                                        on_what = _("interactive rebase in progress; onto ");
1575                                else
1576                                        on_what = _("rebase in progress; onto ");
1577                                branch_name = state.onto;
1578                        } else if (state.detached_from) {
1579                                branch_name = state.detached_from;
1580                                if (state.detached_at)
1581                                        on_what = _("HEAD detached at ");
1582                                else
1583                                        on_what = _("HEAD detached from ");
1584                        } else {
1585                                branch_name = "";
1586                                on_what = _("Not currently on any branch.");
1587                        }
1588                } else
1589                        skip_prefix(branch_name, "refs/heads/", &branch_name);
1590                status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1591                status_printf_more(s, branch_status_color, "%s", on_what);
1592                status_printf_more(s, branch_color, "%s\n", branch_name);
1593                if (!s->is_initial)
1594                        wt_longstatus_print_tracking(s);
1595        }
1596
1597        wt_longstatus_print_state(s, &state);
1598        free(state.branch);
1599        free(state.onto);
1600        free(state.detached_from);
1601
1602        if (s->is_initial) {
1603                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1604                status_printf_ln(s, color(WT_STATUS_HEADER, s),
1605                                 s->commit_template
1606                                 ? _("Initial commit")
1607                                 : _("No commits yet"));
1608                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1609        }
1610
1611        wt_longstatus_print_updated(s);
1612        wt_longstatus_print_unmerged(s);
1613        wt_longstatus_print_changed(s);
1614        if (s->submodule_summary &&
1615            (!s->ignore_submodule_arg ||
1616             strcmp(s->ignore_submodule_arg, "all"))) {
1617                wt_longstatus_print_submodule_summary(s, 0);  /* staged */
1618                wt_longstatus_print_submodule_summary(s, 1);  /* unstaged */
1619        }
1620        if (s->show_untracked_files) {
1621                wt_longstatus_print_other(s, &s->untracked, _("Untracked files"), "add");
1622                if (s->show_ignored_files)
1623                        wt_longstatus_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1624                if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1625                        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1626                        status_printf_ln(s, GIT_COLOR_NORMAL,
1627                                         _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1628                                           "may speed it up, but you have to be careful not to forget to add\n"
1629                                           "new files yourself (see 'git help status')."),
1630                                         s->untracked_in_ms / 1000.0);
1631                }
1632        } else if (s->commitable)
1633                status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1634                        s->hints
1635                        ? _(" (use -u option to show untracked files)") : "");
1636
1637        if (s->verbose)
1638                wt_longstatus_print_verbose(s);
1639        if (!s->commitable) {
1640                if (s->amend)
1641                        status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1642                else if (s->nowarn)
1643                        ; /* nothing */
1644                else if (s->workdir_dirty) {
1645                        if (s->hints)
1646                                printf(_("no changes added to commit "
1647                                         "(use \"git add\" and/or \"git commit -a\")\n"));
1648                        else
1649                                printf(_("no changes added to commit\n"));
1650                } else if (s->untracked.nr) {
1651                        if (s->hints)
1652                                printf(_("nothing added to commit but untracked files "
1653                                         "present (use \"git add\" to track)\n"));
1654                        else
1655                                printf(_("nothing added to commit but untracked files present\n"));
1656                } else if (s->is_initial) {
1657                        if (s->hints)
1658                                printf(_("nothing to commit (create/copy files "
1659                                         "and use \"git add\" to track)\n"));
1660                        else
1661                                printf(_("nothing to commit\n"));
1662                } else if (!s->show_untracked_files) {
1663                        if (s->hints)
1664                                printf(_("nothing to commit (use -u to show untracked files)\n"));
1665                        else
1666                                printf(_("nothing to commit\n"));
1667                } else
1668                        printf(_("nothing to commit, working tree clean\n"));
1669        }
1670        if(s->show_stash)
1671                wt_longstatus_print_stash_summary(s);
1672}
1673
1674static void wt_shortstatus_unmerged(struct string_list_item *it,
1675                           struct wt_status *s)
1676{
1677        struct wt_status_change_data *d = it->util;
1678        const char *how = "??";
1679
1680        switch (d->stagemask) {
1681        case 1: how = "DD"; break; /* both deleted */
1682        case 2: how = "AU"; break; /* added by us */
1683        case 3: how = "UD"; break; /* deleted by them */
1684        case 4: how = "UA"; break; /* added by them */
1685        case 5: how = "DU"; break; /* deleted by us */
1686        case 6: how = "AA"; break; /* both added */
1687        case 7: how = "UU"; break; /* both modified */
1688        }
1689        color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1690        if (s->null_termination) {
1691                fprintf(stdout, " %s%c", it->string, 0);
1692        } else {
1693                struct strbuf onebuf = STRBUF_INIT;
1694                const char *one;
1695                one = quote_path(it->string, s->prefix, &onebuf);
1696                printf(" %s\n", one);
1697                strbuf_release(&onebuf);
1698        }
1699}
1700
1701static void wt_shortstatus_status(struct string_list_item *it,
1702                         struct wt_status *s)
1703{
1704        struct wt_status_change_data *d = it->util;
1705
1706        if (d->index_status)
1707                color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1708        else
1709                putchar(' ');
1710        if (d->worktree_status)
1711                color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1712        else
1713                putchar(' ');
1714        putchar(' ');
1715        if (s->null_termination) {
1716                fprintf(stdout, "%s%c", it->string, 0);
1717                if (d->head_path)
1718                        fprintf(stdout, "%s%c", d->head_path, 0);
1719        } else {
1720                struct strbuf onebuf = STRBUF_INIT;
1721                const char *one;
1722                if (d->head_path) {
1723                        one = quote_path(d->head_path, s->prefix, &onebuf);
1724                        if (*one != '"' && strchr(one, ' ') != NULL) {
1725                                putchar('"');
1726                                strbuf_addch(&onebuf, '"');
1727                                one = onebuf.buf;
1728                        }
1729                        printf("%s -> ", one);
1730                        strbuf_release(&onebuf);
1731                }
1732                one = quote_path(it->string, s->prefix, &onebuf);
1733                if (*one != '"' && strchr(one, ' ') != NULL) {
1734                        putchar('"');
1735                        strbuf_addch(&onebuf, '"');
1736                        one = onebuf.buf;
1737                }
1738                printf("%s\n", one);
1739                strbuf_release(&onebuf);
1740        }
1741}
1742
1743static void wt_shortstatus_other(struct string_list_item *it,
1744                                 struct wt_status *s, const char *sign)
1745{
1746        if (s->null_termination) {
1747                fprintf(stdout, "%s %s%c", sign, it->string, 0);
1748        } else {
1749                struct strbuf onebuf = STRBUF_INIT;
1750                const char *one;
1751                one = quote_path(it->string, s->prefix, &onebuf);
1752                color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1753                printf(" %s\n", one);
1754                strbuf_release(&onebuf);
1755        }
1756}
1757
1758static void wt_shortstatus_print_tracking(struct wt_status *s)
1759{
1760        struct branch *branch;
1761        const char *header_color = color(WT_STATUS_HEADER, s);
1762        const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1763        const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1764
1765        const char *base;
1766        char *short_base;
1767        const char *branch_name;
1768        int num_ours, num_theirs;
1769        int upstream_is_gone = 0;
1770
1771        color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1772
1773        if (!s->branch)
1774                return;
1775        branch_name = s->branch;
1776
1777#define LABEL(string) (s->no_gettext ? (string) : _(string))
1778
1779        if (s->is_initial)
1780                color_fprintf(s->fp, header_color, LABEL(N_("No commits yet on ")));
1781
1782        if (!strcmp(s->branch, "HEAD")) {
1783                color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1784                              LABEL(N_("HEAD (no branch)")));
1785                goto conclude;
1786        }
1787
1788        skip_prefix(branch_name, "refs/heads/", &branch_name);
1789
1790        branch = branch_get(branch_name);
1791
1792        color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1793
1794        if (stat_tracking_info(branch, &num_ours, &num_theirs, &base) < 0) {
1795                if (!base)
1796                        goto conclude;
1797
1798                upstream_is_gone = 1;
1799        }
1800
1801        short_base = shorten_unambiguous_ref(base, 0);
1802        color_fprintf(s->fp, header_color, "...");
1803        color_fprintf(s->fp, branch_color_remote, "%s", short_base);
1804        free(short_base);
1805
1806        if (!upstream_is_gone && !num_ours && !num_theirs)
1807                goto conclude;
1808
1809        color_fprintf(s->fp, header_color, " [");
1810        if (upstream_is_gone) {
1811                color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1812        } else if (!num_ours) {
1813                color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1814                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1815        } else if (!num_theirs) {
1816                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1817                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1818        } else {
1819                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1820                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1821                color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1822                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1823        }
1824
1825        color_fprintf(s->fp, header_color, "]");
1826 conclude:
1827        fputc(s->null_termination ? '\0' : '\n', s->fp);
1828}
1829
1830static void wt_shortstatus_print(struct wt_status *s)
1831{
1832        struct string_list_item *it;
1833
1834        if (s->show_branch)
1835                wt_shortstatus_print_tracking(s);
1836
1837        for_each_string_list_item(it, &s->change) {
1838                struct wt_status_change_data *d = it->util;
1839
1840                if (d->stagemask)
1841                        wt_shortstatus_unmerged(it, s);
1842                else
1843                        wt_shortstatus_status(it, s);
1844        }
1845        for_each_string_list_item(it, &s->untracked)
1846                wt_shortstatus_other(it, s, "??");
1847
1848        for_each_string_list_item(it, &s->ignored)
1849                wt_shortstatus_other(it, s, "!!");
1850}
1851
1852static void wt_porcelain_print(struct wt_status *s)
1853{
1854        s->use_color = 0;
1855        s->relative_paths = 0;
1856        s->prefix = NULL;
1857        s->no_gettext = 1;
1858        wt_shortstatus_print(s);
1859}
1860
1861/*
1862 * Print branch information for porcelain v2 output.  These lines
1863 * are printed when the '--branch' parameter is given.
1864 *
1865 *    # branch.oid <commit><eol>
1866 *    # branch.head <head><eol>
1867 *   [# branch.upstream <upstream><eol>
1868 *   [# branch.ab +<ahead> -<behind><eol>]]
1869 *
1870 *      <commit> ::= the current commit hash or the the literal
1871 *                   "(initial)" to indicate an initialized repo
1872 *                   with no commits.
1873 *
1874 *        <head> ::= <branch_name> the current branch name or
1875 *                   "(detached)" literal when detached head or
1876 *                   "(unknown)" when something is wrong.
1877 *
1878 *    <upstream> ::= the upstream branch name, when set.
1879 *
1880 *       <ahead> ::= integer ahead value, when upstream set
1881 *                   and the commit is present (not gone).
1882 *
1883 *      <behind> ::= integer behind value, when upstream set
1884 *                   and commit is present.
1885 *
1886 *
1887 * The end-of-line is defined by the -z flag.
1888 *
1889 *                 <eol> ::= NUL when -z,
1890 *                           LF when NOT -z.
1891 *
1892 */
1893static void wt_porcelain_v2_print_tracking(struct wt_status *s)
1894{
1895        struct branch *branch;
1896        const char *base;
1897        const char *branch_name;
1898        struct wt_status_state state;
1899        int ab_info, nr_ahead, nr_behind;
1900        char eol = s->null_termination ? '\0' : '\n';
1901
1902        memset(&state, 0, sizeof(state));
1903        wt_status_get_state(&state, s->branch && !strcmp(s->branch, "HEAD"));
1904
1905        fprintf(s->fp, "# branch.oid %s%c",
1906                        (s->is_initial ? "(initial)" : sha1_to_hex(s->sha1_commit)),
1907                        eol);
1908
1909        if (!s->branch)
1910                fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
1911        else {
1912                if (!strcmp(s->branch, "HEAD")) {
1913                        fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
1914
1915                        if (state.rebase_in_progress || state.rebase_interactive_in_progress)
1916                                branch_name = state.onto;
1917                        else if (state.detached_from)
1918                                branch_name = state.detached_from;
1919                        else
1920                                branch_name = "";
1921                } else {
1922                        branch_name = NULL;
1923                        skip_prefix(s->branch, "refs/heads/", &branch_name);
1924
1925                        fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
1926                }
1927
1928                /* Lookup stats on the upstream tracking branch, if set. */
1929                branch = branch_get(branch_name);
1930                base = NULL;
1931                ab_info = (stat_tracking_info(branch, &nr_ahead, &nr_behind, &base) == 0);
1932                if (base) {
1933                        base = shorten_unambiguous_ref(base, 0);
1934                        fprintf(s->fp, "# branch.upstream %s%c", base, eol);
1935                        free((char *)base);
1936
1937                        if (ab_info)
1938                                fprintf(s->fp, "# branch.ab +%d -%d%c", nr_ahead, nr_behind, eol);
1939                }
1940        }
1941
1942        free(state.branch);
1943        free(state.onto);
1944        free(state.detached_from);
1945}
1946
1947/*
1948 * Convert various submodule status values into a
1949 * fixed-length string of characters in the buffer provided.
1950 */
1951static void wt_porcelain_v2_submodule_state(
1952        struct wt_status_change_data *d,
1953        char sub[5])
1954{
1955        if (S_ISGITLINK(d->mode_head) ||
1956                S_ISGITLINK(d->mode_index) ||
1957                S_ISGITLINK(d->mode_worktree)) {
1958                sub[0] = 'S';
1959                sub[1] = d->new_submodule_commits ? 'C' : '.';
1960                sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
1961                sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
1962        } else {
1963                sub[0] = 'N';
1964                sub[1] = '.';
1965                sub[2] = '.';
1966                sub[3] = '.';
1967        }
1968        sub[4] = 0;
1969}
1970
1971/*
1972 * Fix-up changed entries before we print them.
1973 */
1974static void wt_porcelain_v2_fix_up_changed(
1975        struct string_list_item *it,
1976        struct wt_status *s)
1977{
1978        struct wt_status_change_data *d = it->util;
1979
1980        if (!d->index_status) {
1981                /*
1982                 * This entry is unchanged in the index (relative to the head).
1983                 * Therefore, the collect_updated_cb was never called for this
1984                 * entry (during the head-vs-index scan) and so the head column
1985                 * fields were never set.
1986                 *
1987                 * We must have data for the index column (from the
1988                 * index-vs-worktree scan (otherwise, this entry should not be
1989                 * in the list of changes)).
1990                 *
1991                 * Copy index column fields to the head column, so that our
1992                 * output looks complete.
1993                 */
1994                assert(d->mode_head == 0);
1995                d->mode_head = d->mode_index;
1996                oidcpy(&d->oid_head, &d->oid_index);
1997        }
1998
1999        if (!d->worktree_status) {
2000                /*
2001                 * This entry is unchanged in the worktree (relative to the index).
2002                 * Therefore, the collect_changed_cb was never called for this entry
2003                 * (during the index-vs-worktree scan) and so the worktree column
2004                 * fields were never set.
2005                 *
2006                 * We must have data for the index column (from the head-vs-index
2007                 * scan).
2008                 *
2009                 * Copy the index column fields to the worktree column so that
2010                 * our output looks complete.
2011                 *
2012                 * Note that we only have a mode field in the worktree column
2013                 * because the scan code tries really hard to not have to compute it.
2014                 */
2015                assert(d->mode_worktree == 0);
2016                d->mode_worktree = d->mode_index;
2017        }
2018}
2019
2020/*
2021 * Print porcelain v2 info for tracked entries with changes.
2022 */
2023static void wt_porcelain_v2_print_changed_entry(
2024        struct string_list_item *it,
2025        struct wt_status *s)
2026{
2027        struct wt_status_change_data *d = it->util;
2028        struct strbuf buf_index = STRBUF_INIT;
2029        struct strbuf buf_head = STRBUF_INIT;
2030        const char *path_index = NULL;
2031        const char *path_head = NULL;
2032        char key[3];
2033        char submodule_token[5];
2034        char sep_char, eol_char;
2035
2036        wt_porcelain_v2_fix_up_changed(it, s);
2037        wt_porcelain_v2_submodule_state(d, submodule_token);
2038
2039        key[0] = d->index_status ? d->index_status : '.';
2040        key[1] = d->worktree_status ? d->worktree_status : '.';
2041        key[2] = 0;
2042
2043        if (s->null_termination) {
2044                /*
2045                 * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
2046                 * A single NUL character separates them.
2047                 */
2048                sep_char = '\0';
2049                eol_char = '\0';
2050                path_index = it->string;
2051                path_head = d->head_path;
2052        } else {
2053                /*
2054                 * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
2055                 * The source path is only present when necessary.
2056                 * A single TAB separates them (because paths can contain spaces
2057                 * which are not escaped and C-quoting does escape TAB characters).
2058                 */
2059                sep_char = '\t';
2060                eol_char = '\n';
2061                path_index = quote_path(it->string, s->prefix, &buf_index);
2062                if (d->head_path)
2063                        path_head = quote_path(d->head_path, s->prefix, &buf_head);
2064        }
2065
2066        if (path_head)
2067                fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
2068                                key, submodule_token,
2069                                d->mode_head, d->mode_index, d->mode_worktree,
2070                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2071                                key[0], d->score,
2072                                path_index, sep_char, path_head, eol_char);
2073        else
2074                fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
2075                                key, submodule_token,
2076                                d->mode_head, d->mode_index, d->mode_worktree,
2077                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2078                                path_index, eol_char);
2079
2080        strbuf_release(&buf_index);
2081        strbuf_release(&buf_head);
2082}
2083
2084/*
2085 * Print porcelain v2 status info for unmerged entries.
2086 */
2087static void wt_porcelain_v2_print_unmerged_entry(
2088        struct string_list_item *it,
2089        struct wt_status *s)
2090{
2091        struct wt_status_change_data *d = it->util;
2092        const struct cache_entry *ce;
2093        struct strbuf buf_index = STRBUF_INIT;
2094        const char *path_index = NULL;
2095        int pos, stage, sum;
2096        struct {
2097                int mode;
2098                struct object_id oid;
2099        } stages[3];
2100        char *key;
2101        char submodule_token[5];
2102        char unmerged_prefix = 'u';
2103        char eol_char = s->null_termination ? '\0' : '\n';
2104
2105        wt_porcelain_v2_submodule_state(d, submodule_token);
2106
2107        switch (d->stagemask) {
2108        case 1: key = "DD"; break; /* both deleted */
2109        case 2: key = "AU"; break; /* added by us */
2110        case 3: key = "UD"; break; /* deleted by them */
2111        case 4: key = "UA"; break; /* added by them */
2112        case 5: key = "DU"; break; /* deleted by us */
2113        case 6: key = "AA"; break; /* both added */
2114        case 7: key = "UU"; break; /* both modified */
2115        default:
2116                die("BUG: unhandled unmerged status %x", d->stagemask);
2117        }
2118
2119        /*
2120         * Disregard d.aux.porcelain_v2 data that we accumulated
2121         * for the head and index columns during the scans and
2122         * replace with the actual stage data.
2123         *
2124         * Note that this is a last-one-wins for each the individual
2125         * stage [123] columns in the event of multiple cache entries
2126         * for same stage.
2127         */
2128        memset(stages, 0, sizeof(stages));
2129        sum = 0;
2130        pos = cache_name_pos(it->string, strlen(it->string));
2131        assert(pos < 0);
2132        pos = -pos-1;
2133        while (pos < active_nr) {
2134                ce = active_cache[pos++];
2135                stage = ce_stage(ce);
2136                if (strcmp(ce->name, it->string) || !stage)
2137                        break;
2138                stages[stage - 1].mode = ce->ce_mode;
2139                oidcpy(&stages[stage - 1].oid, &ce->oid);
2140                sum |= (1 << (stage - 1));
2141        }
2142        if (sum != d->stagemask)
2143                die("BUG: observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
2144
2145        if (s->null_termination)
2146                path_index = it->string;
2147        else
2148                path_index = quote_path(it->string, s->prefix, &buf_index);
2149
2150        fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
2151                        unmerged_prefix, key, submodule_token,
2152                        stages[0].mode, /* stage 1 */
2153                        stages[1].mode, /* stage 2 */
2154                        stages[2].mode, /* stage 3 */
2155                        d->mode_worktree,
2156                        oid_to_hex(&stages[0].oid), /* stage 1 */
2157                        oid_to_hex(&stages[1].oid), /* stage 2 */
2158                        oid_to_hex(&stages[2].oid), /* stage 3 */
2159                        path_index,
2160                        eol_char);
2161
2162        strbuf_release(&buf_index);
2163}
2164
2165/*
2166 * Print porcelain V2 status info for untracked and ignored entries.
2167 */
2168static void wt_porcelain_v2_print_other(
2169        struct string_list_item *it,
2170        struct wt_status *s,
2171        char prefix)
2172{
2173        struct strbuf buf = STRBUF_INIT;
2174        const char *path;
2175        char eol_char;
2176
2177        if (s->null_termination) {
2178                path = it->string;
2179                eol_char = '\0';
2180        } else {
2181                path = quote_path(it->string, s->prefix, &buf);
2182                eol_char = '\n';
2183        }
2184
2185        fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
2186
2187        strbuf_release(&buf);
2188}
2189
2190/*
2191 * Print porcelain V2 status.
2192 *
2193 * [<v2_branch>]
2194 * [<v2_changed_items>]*
2195 * [<v2_unmerged_items>]*
2196 * [<v2_untracked_items>]*
2197 * [<v2_ignored_items>]*
2198 *
2199 */
2200static void wt_porcelain_v2_print(struct wt_status *s)
2201{
2202        struct wt_status_change_data *d;
2203        struct string_list_item *it;
2204        int i;
2205
2206        if (s->show_branch)
2207                wt_porcelain_v2_print_tracking(s);
2208
2209        for (i = 0; i < s->change.nr; i++) {
2210                it = &(s->change.items[i]);
2211                d = it->util;
2212                if (!d->stagemask)
2213                        wt_porcelain_v2_print_changed_entry(it, s);
2214        }
2215
2216        for (i = 0; i < s->change.nr; i++) {
2217                it = &(s->change.items[i]);
2218                d = it->util;
2219                if (d->stagemask)
2220                        wt_porcelain_v2_print_unmerged_entry(it, s);
2221        }
2222
2223        for (i = 0; i < s->untracked.nr; i++) {
2224                it = &(s->untracked.items[i]);
2225                wt_porcelain_v2_print_other(it, s, '?');
2226        }
2227
2228        for (i = 0; i < s->ignored.nr; i++) {
2229                it = &(s->ignored.items[i]);
2230                wt_porcelain_v2_print_other(it, s, '!');
2231        }
2232}
2233
2234void wt_status_print(struct wt_status *s)
2235{
2236        switch (s->status_format) {
2237        case STATUS_FORMAT_SHORT:
2238                wt_shortstatus_print(s);
2239                break;
2240        case STATUS_FORMAT_PORCELAIN:
2241                wt_porcelain_print(s);
2242                break;
2243        case STATUS_FORMAT_PORCELAIN_V2:
2244                wt_porcelain_v2_print(s);
2245                break;
2246        case STATUS_FORMAT_UNSPECIFIED:
2247                die("BUG: finalize_deferred_config() should have been called");
2248                break;
2249        case STATUS_FORMAT_NONE:
2250        case STATUS_FORMAT_LONG:
2251                wt_longstatus_print(s);
2252                break;
2253        }
2254}
2255
2256/**
2257 * Returns 1 if there are unstaged changes, 0 otherwise.
2258 */
2259int has_unstaged_changes(int ignore_submodules)
2260{
2261        struct rev_info rev_info;
2262        int result;
2263
2264        init_revisions(&rev_info, NULL);
2265        if (ignore_submodules)
2266                DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
2267        DIFF_OPT_SET(&rev_info.diffopt, QUICK);
2268        diff_setup_done(&rev_info.diffopt);
2269        result = run_diff_files(&rev_info, 0);
2270        return diff_result_code(&rev_info.diffopt, result);
2271}
2272
2273/**
2274 * Returns 1 if there are uncommitted changes, 0 otherwise.
2275 */
2276int has_uncommitted_changes(int ignore_submodules)
2277{
2278        struct rev_info rev_info;
2279        int result;
2280
2281        if (is_cache_unborn())
2282                return 0;
2283
2284        init_revisions(&rev_info, NULL);
2285        if (ignore_submodules)
2286                DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
2287        DIFF_OPT_SET(&rev_info.diffopt, QUICK);
2288        add_head_to_pending(&rev_info);
2289        diff_setup_done(&rev_info.diffopt);
2290        result = run_diff_index(&rev_info, 1);
2291        return diff_result_code(&rev_info.diffopt, result);
2292}
2293
2294/**
2295 * If the work tree has unstaged or uncommitted changes, dies with the
2296 * appropriate message.
2297 */
2298int require_clean_work_tree(const char *action, const char *hint, int ignore_submodules, int gently)
2299{
2300        struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file));
2301        int err = 0, fd;
2302
2303        fd = hold_locked_index(lock_file, 0);
2304        refresh_cache(REFRESH_QUIET);
2305        if (0 <= fd)
2306                update_index_if_able(&the_index, lock_file);
2307        rollback_lock_file(lock_file);
2308
2309        if (has_unstaged_changes(ignore_submodules)) {
2310                /* TRANSLATORS: the action is e.g. "pull with rebase" */
2311                error(_("cannot %s: You have unstaged changes."), _(action));
2312                err = 1;
2313        }
2314
2315        if (has_uncommitted_changes(ignore_submodules)) {
2316                if (err)
2317                        error(_("additionally, your index contains uncommitted changes."));
2318                else
2319                        error(_("cannot %s: Your index contains uncommitted changes."),
2320                              _(action));
2321                err = 1;
2322        }
2323
2324        if (err) {
2325                if (hint)
2326                        error("%s", hint);
2327                if (!gently)
2328                        exit(128);
2329        }
2330
2331        return err;
2332}