wt-status.con commit fetch: don't redundantly NULL something calloc() gave us (aa59e0e)
   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        rev.diffopt.flags.dirty_submodules = 1;
 563        rev.diffopt.ita_invisible_in_index = 1;
 564        if (!s->show_untracked_files)
 565                rev.diffopt.flags.ignore_untracked_in_submodules = 1;
 566        if (s->ignore_submodule_arg) {
 567                rev.diffopt.flags.override_submodule_config = 1;
 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        rev.diffopt.flags.override_submodule_config = 1;
 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_mode) {
 662                dir.flags |= DIR_SHOW_IGNORED_TOO;
 663
 664                if (s->show_ignored_mode == SHOW_MATCHING_IGNORED)
 665                        dir.flags |= DIR_SHOW_IGNORED_TOO_MODE_MATCHING;
 666        } else {
 667                dir.untracked = the_index.untracked;
 668        }
 669
 670        setup_standard_excludes(&dir);
 671
 672        fill_directory(&dir, &the_index, &s->pathspec);
 673
 674        for (i = 0; i < dir.nr; i++) {
 675                struct dir_entry *ent = dir.entries[i];
 676                if (cache_name_is_other(ent->name, ent->len) &&
 677                    dir_path_match(ent, &s->pathspec, 0, NULL))
 678                        string_list_insert(&s->untracked, ent->name);
 679                free(ent);
 680        }
 681
 682        for (i = 0; i < dir.ignored_nr; i++) {
 683                struct dir_entry *ent = dir.ignored[i];
 684                if (cache_name_is_other(ent->name, ent->len) &&
 685                    dir_path_match(ent, &s->pathspec, 0, NULL))
 686                        string_list_insert(&s->ignored, ent->name);
 687                free(ent);
 688        }
 689
 690        free(dir.entries);
 691        free(dir.ignored);
 692        clear_directory(&dir);
 693
 694        if (advice_status_u_option)
 695                s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 696}
 697
 698void wt_status_collect(struct wt_status *s)
 699{
 700        wt_status_collect_changes_worktree(s);
 701
 702        if (s->is_initial)
 703                wt_status_collect_changes_initial(s);
 704        else
 705                wt_status_collect_changes_index(s);
 706        wt_status_collect_untracked(s);
 707}
 708
 709static void wt_longstatus_print_unmerged(struct wt_status *s)
 710{
 711        int shown_header = 0;
 712        int i;
 713
 714        for (i = 0; i < s->change.nr; i++) {
 715                struct wt_status_change_data *d;
 716                struct string_list_item *it;
 717                it = &(s->change.items[i]);
 718                d = it->util;
 719                if (!d->stagemask)
 720                        continue;
 721                if (!shown_header) {
 722                        wt_longstatus_print_unmerged_header(s);
 723                        shown_header = 1;
 724                }
 725                wt_longstatus_print_unmerged_data(s, it);
 726        }
 727        if (shown_header)
 728                wt_longstatus_print_trailer(s);
 729
 730}
 731
 732static void wt_longstatus_print_updated(struct wt_status *s)
 733{
 734        int shown_header = 0;
 735        int i;
 736
 737        for (i = 0; i < s->change.nr; i++) {
 738                struct wt_status_change_data *d;
 739                struct string_list_item *it;
 740                it = &(s->change.items[i]);
 741                d = it->util;
 742                if (!d->index_status ||
 743                    d->index_status == DIFF_STATUS_UNMERGED)
 744                        continue;
 745                if (!shown_header) {
 746                        wt_longstatus_print_cached_header(s);
 747                        s->commitable = 1;
 748                        shown_header = 1;
 749                }
 750                wt_longstatus_print_change_data(s, WT_STATUS_UPDATED, it);
 751        }
 752        if (shown_header)
 753                wt_longstatus_print_trailer(s);
 754}
 755
 756/*
 757 * -1 : has delete
 758 *  0 : no change
 759 *  1 : some change but no delete
 760 */
 761static int wt_status_check_worktree_changes(struct wt_status *s,
 762                                             int *dirty_submodules)
 763{
 764        int i;
 765        int changes = 0;
 766
 767        *dirty_submodules = 0;
 768
 769        for (i = 0; i < s->change.nr; i++) {
 770                struct wt_status_change_data *d;
 771                d = s->change.items[i].util;
 772                if (!d->worktree_status ||
 773                    d->worktree_status == DIFF_STATUS_UNMERGED)
 774                        continue;
 775                if (!changes)
 776                        changes = 1;
 777                if (d->dirty_submodule)
 778                        *dirty_submodules = 1;
 779                if (d->worktree_status == DIFF_STATUS_DELETED)
 780                        changes = -1;
 781        }
 782        return changes;
 783}
 784
 785static void wt_longstatus_print_changed(struct wt_status *s)
 786{
 787        int i, dirty_submodules;
 788        int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 789
 790        if (!worktree_changes)
 791                return;
 792
 793        wt_longstatus_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 794
 795        for (i = 0; i < s->change.nr; i++) {
 796                struct wt_status_change_data *d;
 797                struct string_list_item *it;
 798                it = &(s->change.items[i]);
 799                d = it->util;
 800                if (!d->worktree_status ||
 801                    d->worktree_status == DIFF_STATUS_UNMERGED)
 802                        continue;
 803                wt_longstatus_print_change_data(s, WT_STATUS_CHANGED, it);
 804        }
 805        wt_longstatus_print_trailer(s);
 806}
 807
 808static int stash_count_refs(struct object_id *ooid, struct object_id *noid,
 809                            const char *email, timestamp_t timestamp, int tz,
 810                            const char *message, void *cb_data)
 811{
 812        int *c = cb_data;
 813        (*c)++;
 814        return 0;
 815}
 816
 817static void wt_longstatus_print_stash_summary(struct wt_status *s)
 818{
 819        int stash_count = 0;
 820
 821        for_each_reflog_ent("refs/stash", stash_count_refs, &stash_count);
 822        if (stash_count > 0)
 823                status_printf_ln(s, GIT_COLOR_NORMAL,
 824                                 Q_("Your stash currently has %d entry",
 825                                    "Your stash currently has %d entries", stash_count),
 826                                 stash_count);
 827}
 828
 829static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncommitted)
 830{
 831        struct child_process sm_summary = CHILD_PROCESS_INIT;
 832        struct strbuf cmd_stdout = STRBUF_INIT;
 833        struct strbuf summary = STRBUF_INIT;
 834        char *summary_content;
 835
 836        argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 837                         s->index_file);
 838
 839        argv_array_push(&sm_summary.args, "submodule");
 840        argv_array_push(&sm_summary.args, "summary");
 841        argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 842        argv_array_push(&sm_summary.args, "--for-status");
 843        argv_array_push(&sm_summary.args, "--summary-limit");
 844        argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 845        if (!uncommitted)
 846                argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 847
 848        sm_summary.git_cmd = 1;
 849        sm_summary.no_stdin = 1;
 850
 851        capture_command(&sm_summary, &cmd_stdout, 1024);
 852
 853        /* prepend header, only if there's an actual output */
 854        if (cmd_stdout.len) {
 855                if (uncommitted)
 856                        strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 857                else
 858                        strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 859                strbuf_addstr(&summary, "\n\n");
 860        }
 861        strbuf_addbuf(&summary, &cmd_stdout);
 862        strbuf_release(&cmd_stdout);
 863
 864        if (s->display_comment_prefix) {
 865                size_t len;
 866                summary_content = strbuf_detach(&summary, &len);
 867                strbuf_add_commented_lines(&summary, summary_content, len);
 868                free(summary_content);
 869        }
 870
 871        fputs(summary.buf, s->fp);
 872        strbuf_release(&summary);
 873}
 874
 875static void wt_longstatus_print_other(struct wt_status *s,
 876                                      struct string_list *l,
 877                                      const char *what,
 878                                      const char *how)
 879{
 880        int i;
 881        struct strbuf buf = STRBUF_INIT;
 882        static struct string_list output = STRING_LIST_INIT_DUP;
 883        struct column_options copts;
 884
 885        if (!l->nr)
 886                return;
 887
 888        wt_longstatus_print_other_header(s, what, how);
 889
 890        for (i = 0; i < l->nr; i++) {
 891                struct string_list_item *it;
 892                const char *path;
 893                it = &(l->items[i]);
 894                path = quote_path(it->string, s->prefix, &buf);
 895                if (column_active(s->colopts)) {
 896                        string_list_append(&output, path);
 897                        continue;
 898                }
 899                status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 900                status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 901                                   "%s\n", path);
 902        }
 903
 904        strbuf_release(&buf);
 905        if (!column_active(s->colopts))
 906                goto conclude;
 907
 908        strbuf_addf(&buf, "%s%s\t%s",
 909                    color(WT_STATUS_HEADER, s),
 910                    s->display_comment_prefix ? "#" : "",
 911                    color(WT_STATUS_UNTRACKED, s));
 912        memset(&copts, 0, sizeof(copts));
 913        copts.padding = 1;
 914        copts.indent = buf.buf;
 915        if (want_color(s->use_color))
 916                copts.nl = GIT_COLOR_RESET "\n";
 917        print_columns(&output, s->colopts, &copts);
 918        string_list_clear(&output, 0);
 919        strbuf_release(&buf);
 920conclude:
 921        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 922}
 923
 924size_t wt_status_locate_end(const char *s, size_t len)
 925{
 926        const char *p;
 927        struct strbuf pattern = STRBUF_INIT;
 928
 929        strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
 930        if (starts_with(s, pattern.buf + 1))
 931                len = 0;
 932        else if ((p = strstr(s, pattern.buf)))
 933                len = p - s + 1;
 934        strbuf_release(&pattern);
 935        return len;
 936}
 937
 938void wt_status_add_cut_line(FILE *fp)
 939{
 940        const char *explanation = _("Do not modify or remove the line above.\nEverything below it will be ignored.");
 941        struct strbuf buf = STRBUF_INIT;
 942
 943        fprintf(fp, "%c %s", comment_line_char, cut_line);
 944        strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
 945        fputs(buf.buf, fp);
 946        strbuf_release(&buf);
 947}
 948
 949static void wt_longstatus_print_verbose(struct wt_status *s)
 950{
 951        struct rev_info rev;
 952        struct setup_revision_opt opt;
 953        int dirty_submodules;
 954        const char *c = color(WT_STATUS_HEADER, s);
 955
 956        init_revisions(&rev, NULL);
 957        rev.diffopt.flags.allow_textconv = 1;
 958        rev.diffopt.ita_invisible_in_index = 1;
 959
 960        memset(&opt, 0, sizeof(opt));
 961        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 962        setup_revisions(0, NULL, &rev, &opt);
 963
 964        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 965        rev.diffopt.detect_rename = 1;
 966        rev.diffopt.file = s->fp;
 967        rev.diffopt.close_file = 0;
 968        /*
 969         * If we're not going to stdout, then we definitely don't
 970         * want color, since we are going to the commit message
 971         * file (and even the "auto" setting won't work, since it
 972         * will have checked isatty on stdout). But we then do want
 973         * to insert the scissor line here to reliably remove the
 974         * diff before committing.
 975         */
 976        if (s->fp != stdout) {
 977                rev.diffopt.use_color = 0;
 978                wt_status_add_cut_line(s->fp);
 979        }
 980        if (s->verbose > 1 && s->commitable) {
 981                /* print_updated() printed a header, so do we */
 982                if (s->fp != stdout)
 983                        wt_longstatus_print_trailer(s);
 984                status_printf_ln(s, c, _("Changes to be committed:"));
 985                rev.diffopt.a_prefix = "c/";
 986                rev.diffopt.b_prefix = "i/";
 987        } /* else use prefix as per user config */
 988        run_diff_index(&rev, 1);
 989        if (s->verbose > 1 &&
 990            wt_status_check_worktree_changes(s, &dirty_submodules)) {
 991                status_printf_ln(s, c,
 992                        "--------------------------------------------------");
 993                status_printf_ln(s, c, _("Changes not staged for commit:"));
 994                setup_work_tree();
 995                rev.diffopt.a_prefix = "i/";
 996                rev.diffopt.b_prefix = "w/";
 997                run_diff_files(&rev, 0);
 998        }
 999}
1000
1001static void wt_longstatus_print_tracking(struct wt_status *s)
1002{
1003        struct strbuf sb = STRBUF_INIT;
1004        const char *cp, *ep, *branch_name;
1005        struct branch *branch;
1006        char comment_line_string[3];
1007        int i;
1008
1009        assert(s->branch && !s->is_initial);
1010        if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
1011                return;
1012        branch = branch_get(branch_name);
1013        if (!format_tracking_info(branch, &sb))
1014                return;
1015
1016        i = 0;
1017        if (s->display_comment_prefix) {
1018                comment_line_string[i++] = comment_line_char;
1019                comment_line_string[i++] = ' ';
1020        }
1021        comment_line_string[i] = '\0';
1022
1023        for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
1024                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
1025                                 "%s%.*s", comment_line_string,
1026                                 (int)(ep - cp), cp);
1027        if (s->display_comment_prefix)
1028                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
1029                                 comment_line_char);
1030        else
1031                fputs("\n", s->fp);
1032        strbuf_release(&sb);
1033}
1034
1035static int has_unmerged(struct wt_status *s)
1036{
1037        int i;
1038
1039        for (i = 0; i < s->change.nr; i++) {
1040                struct wt_status_change_data *d;
1041                d = s->change.items[i].util;
1042                if (d->stagemask)
1043                        return 1;
1044        }
1045        return 0;
1046}
1047
1048static void show_merge_in_progress(struct wt_status *s,
1049                                struct wt_status_state *state,
1050                                const char *color)
1051{
1052        if (has_unmerged(s)) {
1053                status_printf_ln(s, color, _("You have unmerged paths."));
1054                if (s->hints) {
1055                        status_printf_ln(s, color,
1056                                         _("  (fix conflicts and run \"git commit\")"));
1057                        status_printf_ln(s, color,
1058                                         _("  (use \"git merge --abort\" to abort the merge)"));
1059                }
1060        } else {
1061                s-> commitable = 1;
1062                status_printf_ln(s, color,
1063                        _("All conflicts fixed but you are still merging."));
1064                if (s->hints)
1065                        status_printf_ln(s, color,
1066                                _("  (use \"git commit\" to conclude merge)"));
1067        }
1068        wt_longstatus_print_trailer(s);
1069}
1070
1071static void show_am_in_progress(struct wt_status *s,
1072                                struct wt_status_state *state,
1073                                const char *color)
1074{
1075        status_printf_ln(s, color,
1076                _("You are in the middle of an am session."));
1077        if (state->am_empty_patch)
1078                status_printf_ln(s, color,
1079                        _("The current patch is empty."));
1080        if (s->hints) {
1081                if (!state->am_empty_patch)
1082                        status_printf_ln(s, color,
1083                                _("  (fix conflicts and then run \"git am --continue\")"));
1084                status_printf_ln(s, color,
1085                        _("  (use \"git am --skip\" to skip this patch)"));
1086                status_printf_ln(s, color,
1087                        _("  (use \"git am --abort\" to restore the original branch)"));
1088        }
1089        wt_longstatus_print_trailer(s);
1090}
1091
1092static char *read_line_from_git_path(const char *filename)
1093{
1094        struct strbuf buf = STRBUF_INIT;
1095        FILE *fp = fopen_or_warn(git_path("%s", filename), "r");
1096
1097        if (!fp) {
1098                strbuf_release(&buf);
1099                return NULL;
1100        }
1101        strbuf_getline_lf(&buf, fp);
1102        if (!fclose(fp)) {
1103                return strbuf_detach(&buf, NULL);
1104        } else {
1105                strbuf_release(&buf);
1106                return NULL;
1107        }
1108}
1109
1110static int split_commit_in_progress(struct wt_status *s)
1111{
1112        int split_in_progress = 0;
1113        char *head, *orig_head, *rebase_amend, *rebase_orig_head;
1114
1115        if ((!s->amend && !s->nowarn && !s->workdir_dirty) ||
1116            !s->branch || strcmp(s->branch, "HEAD"))
1117                return 0;
1118
1119        head = read_line_from_git_path("HEAD");
1120        orig_head = read_line_from_git_path("ORIG_HEAD");
1121        rebase_amend = read_line_from_git_path("rebase-merge/amend");
1122        rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1123
1124        if (!head || !orig_head || !rebase_amend || !rebase_orig_head)
1125                ; /* fall through, no split in progress */
1126        else if (!strcmp(rebase_amend, rebase_orig_head))
1127                split_in_progress = !!strcmp(head, rebase_amend);
1128        else if (strcmp(orig_head, rebase_orig_head))
1129                split_in_progress = 1;
1130
1131        free(head);
1132        free(orig_head);
1133        free(rebase_amend);
1134        free(rebase_orig_head);
1135
1136        return split_in_progress;
1137}
1138
1139/*
1140 * Turn
1141 * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1142 * into
1143 * "pick d6a2f03 some message"
1144 *
1145 * The function assumes that the line does not contain useless spaces
1146 * before or after the command.
1147 */
1148static void abbrev_sha1_in_line(struct strbuf *line)
1149{
1150        struct strbuf **split;
1151        int i;
1152
1153        if (starts_with(line->buf, "exec ") ||
1154            starts_with(line->buf, "x "))
1155                return;
1156
1157        split = strbuf_split_max(line, ' ', 3);
1158        if (split[0] && split[1]) {
1159                struct object_id oid;
1160
1161                /*
1162                 * strbuf_split_max left a space. Trim it and re-add
1163                 * it after abbreviation.
1164                 */
1165                strbuf_trim(split[1]);
1166                if (!get_oid(split[1]->buf, &oid)) {
1167                        strbuf_reset(split[1]);
1168                        strbuf_add_unique_abbrev(split[1], oid.hash,
1169                                                 DEFAULT_ABBREV);
1170                        strbuf_addch(split[1], ' ');
1171                        strbuf_reset(line);
1172                        for (i = 0; split[i]; i++)
1173                                strbuf_addbuf(line, split[i]);
1174                }
1175        }
1176        strbuf_list_free(split);
1177}
1178
1179static int read_rebase_todolist(const char *fname, struct string_list *lines)
1180{
1181        struct strbuf line = STRBUF_INIT;
1182        FILE *f = fopen(git_path("%s", fname), "r");
1183
1184        if (!f) {
1185                if (errno == ENOENT)
1186                        return -1;
1187                die_errno("Could not open file %s for reading",
1188                          git_path("%s", fname));
1189        }
1190        while (!strbuf_getline_lf(&line, f)) {
1191                if (line.len && line.buf[0] == comment_line_char)
1192                        continue;
1193                strbuf_trim(&line);
1194                if (!line.len)
1195                        continue;
1196                abbrev_sha1_in_line(&line);
1197                string_list_append(lines, line.buf);
1198        }
1199        fclose(f);
1200        strbuf_release(&line);
1201        return 0;
1202}
1203
1204static void show_rebase_information(struct wt_status *s,
1205                                        struct wt_status_state *state,
1206                                        const char *color)
1207{
1208        if (state->rebase_interactive_in_progress) {
1209                int i;
1210                int nr_lines_to_show = 2;
1211
1212                struct string_list have_done = STRING_LIST_INIT_DUP;
1213                struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1214
1215                read_rebase_todolist("rebase-merge/done", &have_done);
1216                if (read_rebase_todolist("rebase-merge/git-rebase-todo",
1217                                         &yet_to_do))
1218                        status_printf_ln(s, color,
1219                                _("git-rebase-todo is missing."));
1220                if (have_done.nr == 0)
1221                        status_printf_ln(s, color, _("No commands done."));
1222                else {
1223                        status_printf_ln(s, color,
1224                                Q_("Last command done (%d command done):",
1225                                        "Last commands done (%d commands done):",
1226                                        have_done.nr),
1227                                have_done.nr);
1228                        for (i = (have_done.nr > nr_lines_to_show)
1229                                ? have_done.nr - nr_lines_to_show : 0;
1230                                i < have_done.nr;
1231                                i++)
1232                                status_printf_ln(s, color, "   %s", have_done.items[i].string);
1233                        if (have_done.nr > nr_lines_to_show && s->hints)
1234                                status_printf_ln(s, color,
1235                                        _("  (see more in file %s)"), git_path("rebase-merge/done"));
1236                }
1237
1238                if (yet_to_do.nr == 0)
1239                        status_printf_ln(s, color,
1240                                         _("No commands remaining."));
1241                else {
1242                        status_printf_ln(s, color,
1243                                Q_("Next command to do (%d remaining command):",
1244                                        "Next commands to do (%d remaining commands):",
1245                                        yet_to_do.nr),
1246                                yet_to_do.nr);
1247                        for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1248                                status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1249                        if (s->hints)
1250                                status_printf_ln(s, color,
1251                                        _("  (use \"git rebase --edit-todo\" to view and edit)"));
1252                }
1253                string_list_clear(&yet_to_do, 0);
1254                string_list_clear(&have_done, 0);
1255        }
1256}
1257
1258static void print_rebase_state(struct wt_status *s,
1259                                struct wt_status_state *state,
1260                                const char *color)
1261{
1262        if (state->branch)
1263                status_printf_ln(s, color,
1264                                 _("You are currently rebasing branch '%s' on '%s'."),
1265                                 state->branch,
1266                                 state->onto);
1267        else
1268                status_printf_ln(s, color,
1269                                 _("You are currently rebasing."));
1270}
1271
1272static void show_rebase_in_progress(struct wt_status *s,
1273                                struct wt_status_state *state,
1274                                const char *color)
1275{
1276        struct stat st;
1277
1278        show_rebase_information(s, state, color);
1279        if (has_unmerged(s)) {
1280                print_rebase_state(s, state, color);
1281                if (s->hints) {
1282                        status_printf_ln(s, color,
1283                                _("  (fix conflicts and then run \"git rebase --continue\")"));
1284                        status_printf_ln(s, color,
1285                                _("  (use \"git rebase --skip\" to skip this patch)"));
1286                        status_printf_ln(s, color,
1287                                _("  (use \"git rebase --abort\" to check out the original branch)"));
1288                }
1289        } else if (state->rebase_in_progress || !stat(git_path_merge_msg(), &st)) {
1290                print_rebase_state(s, state, color);
1291                if (s->hints)
1292                        status_printf_ln(s, color,
1293                                _("  (all conflicts fixed: run \"git rebase --continue\")"));
1294        } else if (split_commit_in_progress(s)) {
1295                if (state->branch)
1296                        status_printf_ln(s, color,
1297                                         _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1298                                         state->branch,
1299                                         state->onto);
1300                else
1301                        status_printf_ln(s, color,
1302                                         _("You are currently splitting a commit during a rebase."));
1303                if (s->hints)
1304                        status_printf_ln(s, color,
1305                                _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1306        } else {
1307                if (state->branch)
1308                        status_printf_ln(s, color,
1309                                         _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1310                                         state->branch,
1311                                         state->onto);
1312                else
1313                        status_printf_ln(s, color,
1314                                         _("You are currently editing a commit during a rebase."));
1315                if (s->hints && !s->amend) {
1316                        status_printf_ln(s, color,
1317                                _("  (use \"git commit --amend\" to amend the current commit)"));
1318                        status_printf_ln(s, color,
1319                                _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1320                }
1321        }
1322        wt_longstatus_print_trailer(s);
1323}
1324
1325static void show_cherry_pick_in_progress(struct wt_status *s,
1326                                        struct wt_status_state *state,
1327                                        const char *color)
1328{
1329        status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1330                        find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1331        if (s->hints) {
1332                if (has_unmerged(s))
1333                        status_printf_ln(s, color,
1334                                _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1335                else
1336                        status_printf_ln(s, color,
1337                                _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1338                status_printf_ln(s, color,
1339                        _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1340        }
1341        wt_longstatus_print_trailer(s);
1342}
1343
1344static void show_revert_in_progress(struct wt_status *s,
1345                                        struct wt_status_state *state,
1346                                        const char *color)
1347{
1348        status_printf_ln(s, color, _("You are currently reverting commit %s."),
1349                         find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1350        if (s->hints) {
1351                if (has_unmerged(s))
1352                        status_printf_ln(s, color,
1353                                _("  (fix conflicts and run \"git revert --continue\")"));
1354                else
1355                        status_printf_ln(s, color,
1356                                _("  (all conflicts fixed: run \"git revert --continue\")"));
1357                status_printf_ln(s, color,
1358                        _("  (use \"git revert --abort\" to cancel the revert operation)"));
1359        }
1360        wt_longstatus_print_trailer(s);
1361}
1362
1363static void show_bisect_in_progress(struct wt_status *s,
1364                                struct wt_status_state *state,
1365                                const char *color)
1366{
1367        if (state->branch)
1368                status_printf_ln(s, color,
1369                                 _("You are currently bisecting, started from branch '%s'."),
1370                                 state->branch);
1371        else
1372                status_printf_ln(s, color,
1373                                 _("You are currently bisecting."));
1374        if (s->hints)
1375                status_printf_ln(s, color,
1376                        _("  (use \"git bisect reset\" to get back to the original branch)"));
1377        wt_longstatus_print_trailer(s);
1378}
1379
1380/*
1381 * Extract branch information from rebase/bisect
1382 */
1383static char *get_branch(const struct worktree *wt, const char *path)
1384{
1385        struct strbuf sb = STRBUF_INIT;
1386        struct object_id oid;
1387        const char *branch_name;
1388
1389        if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
1390                goto got_nothing;
1391
1392        while (sb.len && sb.buf[sb.len - 1] == '\n')
1393                strbuf_setlen(&sb, sb.len - 1);
1394        if (!sb.len)
1395                goto got_nothing;
1396        if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1397                strbuf_remove(&sb, 0, branch_name - sb.buf);
1398        else if (starts_with(sb.buf, "refs/"))
1399                ;
1400        else if (!get_oid_hex(sb.buf, &oid)) {
1401                strbuf_reset(&sb);
1402                strbuf_add_unique_abbrev(&sb, oid.hash, DEFAULT_ABBREV);
1403        } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1404                goto got_nothing;
1405        else                    /* bisect */
1406                ;
1407        return strbuf_detach(&sb, NULL);
1408
1409got_nothing:
1410        strbuf_release(&sb);
1411        return NULL;
1412}
1413
1414struct grab_1st_switch_cbdata {
1415        struct strbuf buf;
1416        struct object_id noid;
1417};
1418
1419static int grab_1st_switch(struct object_id *ooid, struct object_id *noid,
1420                           const char *email, timestamp_t timestamp, int tz,
1421                           const char *message, void *cb_data)
1422{
1423        struct grab_1st_switch_cbdata *cb = cb_data;
1424        const char *target = NULL, *end;
1425
1426        if (!skip_prefix(message, "checkout: moving from ", &message))
1427                return 0;
1428        target = strstr(message, " to ");
1429        if (!target)
1430                return 0;
1431        target += strlen(" to ");
1432        strbuf_reset(&cb->buf);
1433        oidcpy(&cb->noid, noid);
1434        end = strchrnul(target, '\n');
1435        strbuf_add(&cb->buf, target, end - target);
1436        if (!strcmp(cb->buf.buf, "HEAD")) {
1437                /* HEAD is relative. Resolve it to the right reflog entry. */
1438                strbuf_reset(&cb->buf);
1439                strbuf_add_unique_abbrev(&cb->buf, noid->hash, DEFAULT_ABBREV);
1440        }
1441        return 1;
1442}
1443
1444static void wt_status_get_detached_from(struct wt_status_state *state)
1445{
1446        struct grab_1st_switch_cbdata cb;
1447        struct commit *commit;
1448        struct object_id oid;
1449        char *ref = NULL;
1450
1451        strbuf_init(&cb.buf, 0);
1452        if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1453                strbuf_release(&cb.buf);
1454                return;
1455        }
1456
1457        if (dwim_ref(cb.buf.buf, cb.buf.len, &oid, &ref) == 1 &&
1458            /* sha1 is a commit? match without further lookup */
1459            (!oidcmp(&cb.noid, &oid) ||
1460             /* perhaps sha1 is a tag, try to dereference to a commit */
1461             ((commit = lookup_commit_reference_gently(&oid, 1)) != NULL &&
1462              !oidcmp(&cb.noid, &commit->object.oid)))) {
1463                const char *from = ref;
1464                if (!skip_prefix(from, "refs/tags/", &from))
1465                        skip_prefix(from, "refs/remotes/", &from);
1466                state->detached_from = xstrdup(from);
1467        } else
1468                state->detached_from =
1469                        xstrdup(find_unique_abbrev(cb.noid.hash, DEFAULT_ABBREV));
1470        hashcpy(state->detached_sha1, cb.noid.hash);
1471        state->detached_at = !get_oid("HEAD", &oid) &&
1472                             !hashcmp(oid.hash, state->detached_sha1);
1473
1474        free(ref);
1475        strbuf_release(&cb.buf);
1476}
1477
1478int wt_status_check_rebase(const struct worktree *wt,
1479                           struct wt_status_state *state)
1480{
1481        struct stat st;
1482
1483        if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
1484                if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
1485                        state->am_in_progress = 1;
1486                        if (!stat(worktree_git_path(wt, "rebase-apply/patch"), &st) && !st.st_size)
1487                                state->am_empty_patch = 1;
1488                } else {
1489                        state->rebase_in_progress = 1;
1490                        state->branch = get_branch(wt, "rebase-apply/head-name");
1491                        state->onto = get_branch(wt, "rebase-apply/onto");
1492                }
1493        } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
1494                if (!stat(worktree_git_path(wt, "rebase-merge/interactive"), &st))
1495                        state->rebase_interactive_in_progress = 1;
1496                else
1497                        state->rebase_in_progress = 1;
1498                state->branch = get_branch(wt, "rebase-merge/head-name");
1499                state->onto = get_branch(wt, "rebase-merge/onto");
1500        } else
1501                return 0;
1502        return 1;
1503}
1504
1505int wt_status_check_bisect(const struct worktree *wt,
1506                           struct wt_status_state *state)
1507{
1508        struct stat st;
1509
1510        if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
1511                state->bisect_in_progress = 1;
1512                state->branch = get_branch(wt, "BISECT_START");
1513                return 1;
1514        }
1515        return 0;
1516}
1517
1518void wt_status_get_state(struct wt_status_state *state,
1519                         int get_detached_from)
1520{
1521        struct stat st;
1522        struct object_id oid;
1523
1524        if (!stat(git_path_merge_head(), &st)) {
1525                state->merge_in_progress = 1;
1526        } else if (wt_status_check_rebase(NULL, state)) {
1527                ;               /* all set */
1528        } else if (!stat(git_path_cherry_pick_head(), &st) &&
1529                        !get_oid("CHERRY_PICK_HEAD", &oid)) {
1530                state->cherry_pick_in_progress = 1;
1531                hashcpy(state->cherry_pick_head_sha1, oid.hash);
1532        }
1533        wt_status_check_bisect(NULL, state);
1534        if (!stat(git_path_revert_head(), &st) &&
1535            !get_oid("REVERT_HEAD", &oid)) {
1536                state->revert_in_progress = 1;
1537                hashcpy(state->revert_head_sha1, oid.hash);
1538        }
1539
1540        if (get_detached_from)
1541                wt_status_get_detached_from(state);
1542}
1543
1544static void wt_longstatus_print_state(struct wt_status *s,
1545                                      struct wt_status_state *state)
1546{
1547        const char *state_color = color(WT_STATUS_HEADER, s);
1548        if (state->merge_in_progress)
1549                show_merge_in_progress(s, state, state_color);
1550        else if (state->am_in_progress)
1551                show_am_in_progress(s, state, state_color);
1552        else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1553                show_rebase_in_progress(s, state, state_color);
1554        else if (state->cherry_pick_in_progress)
1555                show_cherry_pick_in_progress(s, state, state_color);
1556        else if (state->revert_in_progress)
1557                show_revert_in_progress(s, state, state_color);
1558        if (state->bisect_in_progress)
1559                show_bisect_in_progress(s, state, state_color);
1560}
1561
1562static void wt_longstatus_print(struct wt_status *s)
1563{
1564        const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1565        const char *branch_status_color = color(WT_STATUS_HEADER, s);
1566        struct wt_status_state state;
1567
1568        memset(&state, 0, sizeof(state));
1569        wt_status_get_state(&state,
1570                            s->branch && !strcmp(s->branch, "HEAD"));
1571
1572        if (s->branch) {
1573                const char *on_what = _("On branch ");
1574                const char *branch_name = s->branch;
1575                if (!strcmp(branch_name, "HEAD")) {
1576                        branch_status_color = color(WT_STATUS_NOBRANCH, s);
1577                        if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1578                                if (state.rebase_interactive_in_progress)
1579                                        on_what = _("interactive rebase in progress; onto ");
1580                                else
1581                                        on_what = _("rebase in progress; onto ");
1582                                branch_name = state.onto;
1583                        } else if (state.detached_from) {
1584                                branch_name = state.detached_from;
1585                                if (state.detached_at)
1586                                        on_what = _("HEAD detached at ");
1587                                else
1588                                        on_what = _("HEAD detached from ");
1589                        } else {
1590                                branch_name = "";
1591                                on_what = _("Not currently on any branch.");
1592                        }
1593                } else
1594                        skip_prefix(branch_name, "refs/heads/", &branch_name);
1595                status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1596                status_printf_more(s, branch_status_color, "%s", on_what);
1597                status_printf_more(s, branch_color, "%s\n", branch_name);
1598                if (!s->is_initial)
1599                        wt_longstatus_print_tracking(s);
1600        }
1601
1602        wt_longstatus_print_state(s, &state);
1603        free(state.branch);
1604        free(state.onto);
1605        free(state.detached_from);
1606
1607        if (s->is_initial) {
1608                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1609                status_printf_ln(s, color(WT_STATUS_HEADER, s),
1610                                 s->commit_template
1611                                 ? _("Initial commit")
1612                                 : _("No commits yet"));
1613                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1614        }
1615
1616        wt_longstatus_print_updated(s);
1617        wt_longstatus_print_unmerged(s);
1618        wt_longstatus_print_changed(s);
1619        if (s->submodule_summary &&
1620            (!s->ignore_submodule_arg ||
1621             strcmp(s->ignore_submodule_arg, "all"))) {
1622                wt_longstatus_print_submodule_summary(s, 0);  /* staged */
1623                wt_longstatus_print_submodule_summary(s, 1);  /* unstaged */
1624        }
1625        if (s->show_untracked_files) {
1626                wt_longstatus_print_other(s, &s->untracked, _("Untracked files"), "add");
1627                if (s->show_ignored_mode)
1628                        wt_longstatus_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1629                if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1630                        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1631                        status_printf_ln(s, GIT_COLOR_NORMAL,
1632                                         _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1633                                           "may speed it up, but you have to be careful not to forget to add\n"
1634                                           "new files yourself (see 'git help status')."),
1635                                         s->untracked_in_ms / 1000.0);
1636                }
1637        } else if (s->commitable)
1638                status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1639                        s->hints
1640                        ? _(" (use -u option to show untracked files)") : "");
1641
1642        if (s->verbose)
1643                wt_longstatus_print_verbose(s);
1644        if (!s->commitable) {
1645                if (s->amend)
1646                        status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1647                else if (s->nowarn)
1648                        ; /* nothing */
1649                else if (s->workdir_dirty) {
1650                        if (s->hints)
1651                                printf(_("no changes added to commit "
1652                                         "(use \"git add\" and/or \"git commit -a\")\n"));
1653                        else
1654                                printf(_("no changes added to commit\n"));
1655                } else if (s->untracked.nr) {
1656                        if (s->hints)
1657                                printf(_("nothing added to commit but untracked files "
1658                                         "present (use \"git add\" to track)\n"));
1659                        else
1660                                printf(_("nothing added to commit but untracked files present\n"));
1661                } else if (s->is_initial) {
1662                        if (s->hints)
1663                                printf(_("nothing to commit (create/copy files "
1664                                         "and use \"git add\" to track)\n"));
1665                        else
1666                                printf(_("nothing to commit\n"));
1667                } else if (!s->show_untracked_files) {
1668                        if (s->hints)
1669                                printf(_("nothing to commit (use -u to show untracked files)\n"));
1670                        else
1671                                printf(_("nothing to commit\n"));
1672                } else
1673                        printf(_("nothing to commit, working tree clean\n"));
1674        }
1675        if(s->show_stash)
1676                wt_longstatus_print_stash_summary(s);
1677}
1678
1679static void wt_shortstatus_unmerged(struct string_list_item *it,
1680                           struct wt_status *s)
1681{
1682        struct wt_status_change_data *d = it->util;
1683        const char *how = "??";
1684
1685        switch (d->stagemask) {
1686        case 1: how = "DD"; break; /* both deleted */
1687        case 2: how = "AU"; break; /* added by us */
1688        case 3: how = "UD"; break; /* deleted by them */
1689        case 4: how = "UA"; break; /* added by them */
1690        case 5: how = "DU"; break; /* deleted by us */
1691        case 6: how = "AA"; break; /* both added */
1692        case 7: how = "UU"; break; /* both modified */
1693        }
1694        color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1695        if (s->null_termination) {
1696                fprintf(stdout, " %s%c", it->string, 0);
1697        } else {
1698                struct strbuf onebuf = STRBUF_INIT;
1699                const char *one;
1700                one = quote_path(it->string, s->prefix, &onebuf);
1701                printf(" %s\n", one);
1702                strbuf_release(&onebuf);
1703        }
1704}
1705
1706static void wt_shortstatus_status(struct string_list_item *it,
1707                         struct wt_status *s)
1708{
1709        struct wt_status_change_data *d = it->util;
1710
1711        if (d->index_status)
1712                color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1713        else
1714                putchar(' ');
1715        if (d->worktree_status)
1716                color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1717        else
1718                putchar(' ');
1719        putchar(' ');
1720        if (s->null_termination) {
1721                fprintf(stdout, "%s%c", it->string, 0);
1722                if (d->head_path)
1723                        fprintf(stdout, "%s%c", d->head_path, 0);
1724        } else {
1725                struct strbuf onebuf = STRBUF_INIT;
1726                const char *one;
1727                if (d->head_path) {
1728                        one = quote_path(d->head_path, s->prefix, &onebuf);
1729                        if (*one != '"' && strchr(one, ' ') != NULL) {
1730                                putchar('"');
1731                                strbuf_addch(&onebuf, '"');
1732                                one = onebuf.buf;
1733                        }
1734                        printf("%s -> ", one);
1735                        strbuf_release(&onebuf);
1736                }
1737                one = quote_path(it->string, s->prefix, &onebuf);
1738                if (*one != '"' && strchr(one, ' ') != NULL) {
1739                        putchar('"');
1740                        strbuf_addch(&onebuf, '"');
1741                        one = onebuf.buf;
1742                }
1743                printf("%s\n", one);
1744                strbuf_release(&onebuf);
1745        }
1746}
1747
1748static void wt_shortstatus_other(struct string_list_item *it,
1749                                 struct wt_status *s, const char *sign)
1750{
1751        if (s->null_termination) {
1752                fprintf(stdout, "%s %s%c", sign, it->string, 0);
1753        } else {
1754                struct strbuf onebuf = STRBUF_INIT;
1755                const char *one;
1756                one = quote_path(it->string, s->prefix, &onebuf);
1757                color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1758                printf(" %s\n", one);
1759                strbuf_release(&onebuf);
1760        }
1761}
1762
1763static void wt_shortstatus_print_tracking(struct wt_status *s)
1764{
1765        struct branch *branch;
1766        const char *header_color = color(WT_STATUS_HEADER, s);
1767        const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1768        const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1769
1770        const char *base;
1771        char *short_base;
1772        const char *branch_name;
1773        int num_ours, num_theirs;
1774        int upstream_is_gone = 0;
1775
1776        color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1777
1778        if (!s->branch)
1779                return;
1780        branch_name = s->branch;
1781
1782#define LABEL(string) (s->no_gettext ? (string) : _(string))
1783
1784        if (s->is_initial)
1785                color_fprintf(s->fp, header_color, LABEL(N_("No commits yet on ")));
1786
1787        if (!strcmp(s->branch, "HEAD")) {
1788                color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1789                              LABEL(N_("HEAD (no branch)")));
1790                goto conclude;
1791        }
1792
1793        skip_prefix(branch_name, "refs/heads/", &branch_name);
1794
1795        branch = branch_get(branch_name);
1796
1797        color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1798
1799        if (stat_tracking_info(branch, &num_ours, &num_theirs, &base) < 0) {
1800                if (!base)
1801                        goto conclude;
1802
1803                upstream_is_gone = 1;
1804        }
1805
1806        short_base = shorten_unambiguous_ref(base, 0);
1807        color_fprintf(s->fp, header_color, "...");
1808        color_fprintf(s->fp, branch_color_remote, "%s", short_base);
1809        free(short_base);
1810
1811        if (!upstream_is_gone && !num_ours && !num_theirs)
1812                goto conclude;
1813
1814        color_fprintf(s->fp, header_color, " [");
1815        if (upstream_is_gone) {
1816                color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1817        } else if (!num_ours) {
1818                color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1819                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1820        } else if (!num_theirs) {
1821                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1822                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1823        } else {
1824                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1825                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1826                color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1827                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1828        }
1829
1830        color_fprintf(s->fp, header_color, "]");
1831 conclude:
1832        fputc(s->null_termination ? '\0' : '\n', s->fp);
1833}
1834
1835static void wt_shortstatus_print(struct wt_status *s)
1836{
1837        struct string_list_item *it;
1838
1839        if (s->show_branch)
1840                wt_shortstatus_print_tracking(s);
1841
1842        for_each_string_list_item(it, &s->change) {
1843                struct wt_status_change_data *d = it->util;
1844
1845                if (d->stagemask)
1846                        wt_shortstatus_unmerged(it, s);
1847                else
1848                        wt_shortstatus_status(it, s);
1849        }
1850        for_each_string_list_item(it, &s->untracked)
1851                wt_shortstatus_other(it, s, "??");
1852
1853        for_each_string_list_item(it, &s->ignored)
1854                wt_shortstatus_other(it, s, "!!");
1855}
1856
1857static void wt_porcelain_print(struct wt_status *s)
1858{
1859        s->use_color = 0;
1860        s->relative_paths = 0;
1861        s->prefix = NULL;
1862        s->no_gettext = 1;
1863        wt_shortstatus_print(s);
1864}
1865
1866/*
1867 * Print branch information for porcelain v2 output.  These lines
1868 * are printed when the '--branch' parameter is given.
1869 *
1870 *    # branch.oid <commit><eol>
1871 *    # branch.head <head><eol>
1872 *   [# branch.upstream <upstream><eol>
1873 *   [# branch.ab +<ahead> -<behind><eol>]]
1874 *
1875 *      <commit> ::= the current commit hash or the the literal
1876 *                   "(initial)" to indicate an initialized repo
1877 *                   with no commits.
1878 *
1879 *        <head> ::= <branch_name> the current branch name or
1880 *                   "(detached)" literal when detached head or
1881 *                   "(unknown)" when something is wrong.
1882 *
1883 *    <upstream> ::= the upstream branch name, when set.
1884 *
1885 *       <ahead> ::= integer ahead value, when upstream set
1886 *                   and the commit is present (not gone).
1887 *
1888 *      <behind> ::= integer behind value, when upstream set
1889 *                   and commit is present.
1890 *
1891 *
1892 * The end-of-line is defined by the -z flag.
1893 *
1894 *                 <eol> ::= NUL when -z,
1895 *                           LF when NOT -z.
1896 *
1897 */
1898static void wt_porcelain_v2_print_tracking(struct wt_status *s)
1899{
1900        struct branch *branch;
1901        const char *base;
1902        const char *branch_name;
1903        struct wt_status_state state;
1904        int ab_info, nr_ahead, nr_behind;
1905        char eol = s->null_termination ? '\0' : '\n';
1906
1907        memset(&state, 0, sizeof(state));
1908        wt_status_get_state(&state, s->branch && !strcmp(s->branch, "HEAD"));
1909
1910        fprintf(s->fp, "# branch.oid %s%c",
1911                        (s->is_initial ? "(initial)" : sha1_to_hex(s->sha1_commit)),
1912                        eol);
1913
1914        if (!s->branch)
1915                fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
1916        else {
1917                if (!strcmp(s->branch, "HEAD")) {
1918                        fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
1919
1920                        if (state.rebase_in_progress || state.rebase_interactive_in_progress)
1921                                branch_name = state.onto;
1922                        else if (state.detached_from)
1923                                branch_name = state.detached_from;
1924                        else
1925                                branch_name = "";
1926                } else {
1927                        branch_name = NULL;
1928                        skip_prefix(s->branch, "refs/heads/", &branch_name);
1929
1930                        fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
1931                }
1932
1933                /* Lookup stats on the upstream tracking branch, if set. */
1934                branch = branch_get(branch_name);
1935                base = NULL;
1936                ab_info = (stat_tracking_info(branch, &nr_ahead, &nr_behind, &base) == 0);
1937                if (base) {
1938                        base = shorten_unambiguous_ref(base, 0);
1939                        fprintf(s->fp, "# branch.upstream %s%c", base, eol);
1940                        free((char *)base);
1941
1942                        if (ab_info)
1943                                fprintf(s->fp, "# branch.ab +%d -%d%c", nr_ahead, nr_behind, eol);
1944                }
1945        }
1946
1947        free(state.branch);
1948        free(state.onto);
1949        free(state.detached_from);
1950}
1951
1952/*
1953 * Convert various submodule status values into a
1954 * fixed-length string of characters in the buffer provided.
1955 */
1956static void wt_porcelain_v2_submodule_state(
1957        struct wt_status_change_data *d,
1958        char sub[5])
1959{
1960        if (S_ISGITLINK(d->mode_head) ||
1961                S_ISGITLINK(d->mode_index) ||
1962                S_ISGITLINK(d->mode_worktree)) {
1963                sub[0] = 'S';
1964                sub[1] = d->new_submodule_commits ? 'C' : '.';
1965                sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
1966                sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
1967        } else {
1968                sub[0] = 'N';
1969                sub[1] = '.';
1970                sub[2] = '.';
1971                sub[3] = '.';
1972        }
1973        sub[4] = 0;
1974}
1975
1976/*
1977 * Fix-up changed entries before we print them.
1978 */
1979static void wt_porcelain_v2_fix_up_changed(
1980        struct string_list_item *it,
1981        struct wt_status *s)
1982{
1983        struct wt_status_change_data *d = it->util;
1984
1985        if (!d->index_status) {
1986                /*
1987                 * This entry is unchanged in the index (relative to the head).
1988                 * Therefore, the collect_updated_cb was never called for this
1989                 * entry (during the head-vs-index scan) and so the head column
1990                 * fields were never set.
1991                 *
1992                 * We must have data for the index column (from the
1993                 * index-vs-worktree scan (otherwise, this entry should not be
1994                 * in the list of changes)).
1995                 *
1996                 * Copy index column fields to the head column, so that our
1997                 * output looks complete.
1998                 */
1999                assert(d->mode_head == 0);
2000                d->mode_head = d->mode_index;
2001                oidcpy(&d->oid_head, &d->oid_index);
2002        }
2003
2004        if (!d->worktree_status) {
2005                /*
2006                 * This entry is unchanged in the worktree (relative to the index).
2007                 * Therefore, the collect_changed_cb was never called for this entry
2008                 * (during the index-vs-worktree scan) and so the worktree column
2009                 * fields were never set.
2010                 *
2011                 * We must have data for the index column (from the head-vs-index
2012                 * scan).
2013                 *
2014                 * Copy the index column fields to the worktree column so that
2015                 * our output looks complete.
2016                 *
2017                 * Note that we only have a mode field in the worktree column
2018                 * because the scan code tries really hard to not have to compute it.
2019                 */
2020                assert(d->mode_worktree == 0);
2021                d->mode_worktree = d->mode_index;
2022        }
2023}
2024
2025/*
2026 * Print porcelain v2 info for tracked entries with changes.
2027 */
2028static void wt_porcelain_v2_print_changed_entry(
2029        struct string_list_item *it,
2030        struct wt_status *s)
2031{
2032        struct wt_status_change_data *d = it->util;
2033        struct strbuf buf_index = STRBUF_INIT;
2034        struct strbuf buf_head = STRBUF_INIT;
2035        const char *path_index = NULL;
2036        const char *path_head = NULL;
2037        char key[3];
2038        char submodule_token[5];
2039        char sep_char, eol_char;
2040
2041        wt_porcelain_v2_fix_up_changed(it, s);
2042        wt_porcelain_v2_submodule_state(d, submodule_token);
2043
2044        key[0] = d->index_status ? d->index_status : '.';
2045        key[1] = d->worktree_status ? d->worktree_status : '.';
2046        key[2] = 0;
2047
2048        if (s->null_termination) {
2049                /*
2050                 * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
2051                 * A single NUL character separates them.
2052                 */
2053                sep_char = '\0';
2054                eol_char = '\0';
2055                path_index = it->string;
2056                path_head = d->head_path;
2057        } else {
2058                /*
2059                 * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
2060                 * The source path is only present when necessary.
2061                 * A single TAB separates them (because paths can contain spaces
2062                 * which are not escaped and C-quoting does escape TAB characters).
2063                 */
2064                sep_char = '\t';
2065                eol_char = '\n';
2066                path_index = quote_path(it->string, s->prefix, &buf_index);
2067                if (d->head_path)
2068                        path_head = quote_path(d->head_path, s->prefix, &buf_head);
2069        }
2070
2071        if (path_head)
2072                fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
2073                                key, submodule_token,
2074                                d->mode_head, d->mode_index, d->mode_worktree,
2075                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2076                                key[0], d->score,
2077                                path_index, sep_char, path_head, eol_char);
2078        else
2079                fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
2080                                key, submodule_token,
2081                                d->mode_head, d->mode_index, d->mode_worktree,
2082                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2083                                path_index, eol_char);
2084
2085        strbuf_release(&buf_index);
2086        strbuf_release(&buf_head);
2087}
2088
2089/*
2090 * Print porcelain v2 status info for unmerged entries.
2091 */
2092static void wt_porcelain_v2_print_unmerged_entry(
2093        struct string_list_item *it,
2094        struct wt_status *s)
2095{
2096        struct wt_status_change_data *d = it->util;
2097        const struct cache_entry *ce;
2098        struct strbuf buf_index = STRBUF_INIT;
2099        const char *path_index = NULL;
2100        int pos, stage, sum;
2101        struct {
2102                int mode;
2103                struct object_id oid;
2104        } stages[3];
2105        char *key;
2106        char submodule_token[5];
2107        char unmerged_prefix = 'u';
2108        char eol_char = s->null_termination ? '\0' : '\n';
2109
2110        wt_porcelain_v2_submodule_state(d, submodule_token);
2111
2112        switch (d->stagemask) {
2113        case 1: key = "DD"; break; /* both deleted */
2114        case 2: key = "AU"; break; /* added by us */
2115        case 3: key = "UD"; break; /* deleted by them */
2116        case 4: key = "UA"; break; /* added by them */
2117        case 5: key = "DU"; break; /* deleted by us */
2118        case 6: key = "AA"; break; /* both added */
2119        case 7: key = "UU"; break; /* both modified */
2120        default:
2121                die("BUG: unhandled unmerged status %x", d->stagemask);
2122        }
2123
2124        /*
2125         * Disregard d.aux.porcelain_v2 data that we accumulated
2126         * for the head and index columns during the scans and
2127         * replace with the actual stage data.
2128         *
2129         * Note that this is a last-one-wins for each the individual
2130         * stage [123] columns in the event of multiple cache entries
2131         * for same stage.
2132         */
2133        memset(stages, 0, sizeof(stages));
2134        sum = 0;
2135        pos = cache_name_pos(it->string, strlen(it->string));
2136        assert(pos < 0);
2137        pos = -pos-1;
2138        while (pos < active_nr) {
2139                ce = active_cache[pos++];
2140                stage = ce_stage(ce);
2141                if (strcmp(ce->name, it->string) || !stage)
2142                        break;
2143                stages[stage - 1].mode = ce->ce_mode;
2144                oidcpy(&stages[stage - 1].oid, &ce->oid);
2145                sum |= (1 << (stage - 1));
2146        }
2147        if (sum != d->stagemask)
2148                die("BUG: observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
2149
2150        if (s->null_termination)
2151                path_index = it->string;
2152        else
2153                path_index = quote_path(it->string, s->prefix, &buf_index);
2154
2155        fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
2156                        unmerged_prefix, key, submodule_token,
2157                        stages[0].mode, /* stage 1 */
2158                        stages[1].mode, /* stage 2 */
2159                        stages[2].mode, /* stage 3 */
2160                        d->mode_worktree,
2161                        oid_to_hex(&stages[0].oid), /* stage 1 */
2162                        oid_to_hex(&stages[1].oid), /* stage 2 */
2163                        oid_to_hex(&stages[2].oid), /* stage 3 */
2164                        path_index,
2165                        eol_char);
2166
2167        strbuf_release(&buf_index);
2168}
2169
2170/*
2171 * Print porcelain V2 status info for untracked and ignored entries.
2172 */
2173static void wt_porcelain_v2_print_other(
2174        struct string_list_item *it,
2175        struct wt_status *s,
2176        char prefix)
2177{
2178        struct strbuf buf = STRBUF_INIT;
2179        const char *path;
2180        char eol_char;
2181
2182        if (s->null_termination) {
2183                path = it->string;
2184                eol_char = '\0';
2185        } else {
2186                path = quote_path(it->string, s->prefix, &buf);
2187                eol_char = '\n';
2188        }
2189
2190        fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
2191
2192        strbuf_release(&buf);
2193}
2194
2195/*
2196 * Print porcelain V2 status.
2197 *
2198 * [<v2_branch>]
2199 * [<v2_changed_items>]*
2200 * [<v2_unmerged_items>]*
2201 * [<v2_untracked_items>]*
2202 * [<v2_ignored_items>]*
2203 *
2204 */
2205static void wt_porcelain_v2_print(struct wt_status *s)
2206{
2207        struct wt_status_change_data *d;
2208        struct string_list_item *it;
2209        int i;
2210
2211        if (s->show_branch)
2212                wt_porcelain_v2_print_tracking(s);
2213
2214        for (i = 0; i < s->change.nr; i++) {
2215                it = &(s->change.items[i]);
2216                d = it->util;
2217                if (!d->stagemask)
2218                        wt_porcelain_v2_print_changed_entry(it, s);
2219        }
2220
2221        for (i = 0; i < s->change.nr; i++) {
2222                it = &(s->change.items[i]);
2223                d = it->util;
2224                if (d->stagemask)
2225                        wt_porcelain_v2_print_unmerged_entry(it, s);
2226        }
2227
2228        for (i = 0; i < s->untracked.nr; i++) {
2229                it = &(s->untracked.items[i]);
2230                wt_porcelain_v2_print_other(it, s, '?');
2231        }
2232
2233        for (i = 0; i < s->ignored.nr; i++) {
2234                it = &(s->ignored.items[i]);
2235                wt_porcelain_v2_print_other(it, s, '!');
2236        }
2237}
2238
2239void wt_status_print(struct wt_status *s)
2240{
2241        switch (s->status_format) {
2242        case STATUS_FORMAT_SHORT:
2243                wt_shortstatus_print(s);
2244                break;
2245        case STATUS_FORMAT_PORCELAIN:
2246                wt_porcelain_print(s);
2247                break;
2248        case STATUS_FORMAT_PORCELAIN_V2:
2249                wt_porcelain_v2_print(s);
2250                break;
2251        case STATUS_FORMAT_UNSPECIFIED:
2252                die("BUG: finalize_deferred_config() should have been called");
2253                break;
2254        case STATUS_FORMAT_NONE:
2255        case STATUS_FORMAT_LONG:
2256                wt_longstatus_print(s);
2257                break;
2258        }
2259}
2260
2261/**
2262 * Returns 1 if there are unstaged changes, 0 otherwise.
2263 */
2264int has_unstaged_changes(int ignore_submodules)
2265{
2266        struct rev_info rev_info;
2267        int result;
2268
2269        init_revisions(&rev_info, NULL);
2270        if (ignore_submodules) {
2271                rev_info.diffopt.flags.ignore_submodules = 1;
2272                rev_info.diffopt.flags.override_submodule_config = 1;
2273        }
2274        rev_info.diffopt.flags.quick = 1;
2275        diff_setup_done(&rev_info.diffopt);
2276        result = run_diff_files(&rev_info, 0);
2277        return diff_result_code(&rev_info.diffopt, result);
2278}
2279
2280/**
2281 * Returns 1 if there are uncommitted changes, 0 otherwise.
2282 */
2283int has_uncommitted_changes(int ignore_submodules)
2284{
2285        struct rev_info rev_info;
2286        int result;
2287
2288        if (is_cache_unborn())
2289                return 0;
2290
2291        init_revisions(&rev_info, NULL);
2292        if (ignore_submodules)
2293                rev_info.diffopt.flags.ignore_submodules = 1;
2294        rev_info.diffopt.flags.quick = 1;
2295        add_head_to_pending(&rev_info);
2296        diff_setup_done(&rev_info.diffopt);
2297        result = run_diff_index(&rev_info, 1);
2298        return diff_result_code(&rev_info.diffopt, result);
2299}
2300
2301/**
2302 * If the work tree has unstaged or uncommitted changes, dies with the
2303 * appropriate message.
2304 */
2305int require_clean_work_tree(const char *action, const char *hint, int ignore_submodules, int gently)
2306{
2307        struct lock_file lock_file = LOCK_INIT;
2308        int err = 0, fd;
2309
2310        fd = hold_locked_index(&lock_file, 0);
2311        refresh_cache(REFRESH_QUIET);
2312        if (0 <= fd)
2313                update_index_if_able(&the_index, &lock_file);
2314        rollback_lock_file(&lock_file);
2315
2316        if (has_unstaged_changes(ignore_submodules)) {
2317                /* TRANSLATORS: the action is e.g. "pull with rebase" */
2318                error(_("cannot %s: You have unstaged changes."), _(action));
2319                err = 1;
2320        }
2321
2322        if (has_uncommitted_changes(ignore_submodules)) {
2323                if (err)
2324                        error(_("additionally, your index contains uncommitted changes."));
2325                else
2326                        error(_("cannot %s: Your index contains uncommitted changes."),
2327                              _(action));
2328                err = 1;
2329        }
2330
2331        if (err) {
2332                if (hint)
2333                        error("%s", hint);
2334                if (!gently)
2335                        exit(128);
2336        }
2337
2338        return err;
2339}