wt-status.con commit Merge branch 'fg/completion-external' (fb3a0ca)
   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->ahead_behind_flags = AHEAD_BEHIND_UNSPECIFIED;
 140        s->display_comment_prefix = 0;
 141}
 142
 143static void wt_longstatus_print_unmerged_header(struct wt_status *s)
 144{
 145        int i;
 146        int del_mod_conflict = 0;
 147        int both_deleted = 0;
 148        int not_deleted = 0;
 149        const char *c = color(WT_STATUS_HEADER, s);
 150
 151        status_printf_ln(s, c, _("Unmerged paths:"));
 152
 153        for (i = 0; i < s->change.nr; i++) {
 154                struct string_list_item *it = &(s->change.items[i]);
 155                struct wt_status_change_data *d = it->util;
 156
 157                switch (d->stagemask) {
 158                case 0:
 159                        break;
 160                case 1:
 161                        both_deleted = 1;
 162                        break;
 163                case 3:
 164                case 5:
 165                        del_mod_conflict = 1;
 166                        break;
 167                default:
 168                        not_deleted = 1;
 169                        break;
 170                }
 171        }
 172
 173        if (!s->hints)
 174                return;
 175        if (s->whence != FROM_COMMIT)
 176                ;
 177        else if (!s->is_initial)
 178                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 179        else
 180                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 181
 182        if (!both_deleted) {
 183                if (!del_mod_conflict)
 184                        status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
 185                else
 186                        status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 187        } else if (!del_mod_conflict && !not_deleted) {
 188                status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
 189        } else {
 190                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 191        }
 192        status_printf_ln(s, c, "%s", "");
 193}
 194
 195static void wt_longstatus_print_cached_header(struct wt_status *s)
 196{
 197        const char *c = color(WT_STATUS_HEADER, s);
 198
 199        status_printf_ln(s, c, _("Changes to be committed:"));
 200        if (!s->hints)
 201                return;
 202        if (s->whence != FROM_COMMIT)
 203                ; /* NEEDSWORK: use "git reset --unresolve"??? */
 204        else if (!s->is_initial)
 205                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 206        else
 207                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 208        status_printf_ln(s, c, "%s", "");
 209}
 210
 211static void wt_longstatus_print_dirty_header(struct wt_status *s,
 212                                             int has_deleted,
 213                                             int has_dirty_submodules)
 214{
 215        const char *c = color(WT_STATUS_HEADER, s);
 216
 217        status_printf_ln(s, c, _("Changes not staged for commit:"));
 218        if (!s->hints)
 219                return;
 220        if (!has_deleted)
 221                status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
 222        else
 223                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
 224        status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
 225        if (has_dirty_submodules)
 226                status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
 227        status_printf_ln(s, c, "%s", "");
 228}
 229
 230static void wt_longstatus_print_other_header(struct wt_status *s,
 231                                             const char *what,
 232                                             const char *how)
 233{
 234        const char *c = color(WT_STATUS_HEADER, s);
 235        status_printf_ln(s, c, "%s:", what);
 236        if (!s->hints)
 237                return;
 238        status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
 239        status_printf_ln(s, c, "%s", "");
 240}
 241
 242static void wt_longstatus_print_trailer(struct wt_status *s)
 243{
 244        status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 245}
 246
 247#define quote_path quote_path_relative
 248
 249static const char *wt_status_unmerged_status_string(int stagemask)
 250{
 251        switch (stagemask) {
 252        case 1:
 253                return _("both deleted:");
 254        case 2:
 255                return _("added by us:");
 256        case 3:
 257                return _("deleted by them:");
 258        case 4:
 259                return _("added by them:");
 260        case 5:
 261                return _("deleted by us:");
 262        case 6:
 263                return _("both added:");
 264        case 7:
 265                return _("both modified:");
 266        default:
 267                die("BUG: unhandled unmerged status %x", stagemask);
 268        }
 269}
 270
 271static const char *wt_status_diff_status_string(int status)
 272{
 273        switch (status) {
 274        case DIFF_STATUS_ADDED:
 275                return _("new file:");
 276        case DIFF_STATUS_COPIED:
 277                return _("copied:");
 278        case DIFF_STATUS_DELETED:
 279                return _("deleted:");
 280        case DIFF_STATUS_MODIFIED:
 281                return _("modified:");
 282        case DIFF_STATUS_RENAMED:
 283                return _("renamed:");
 284        case DIFF_STATUS_TYPE_CHANGED:
 285                return _("typechange:");
 286        case DIFF_STATUS_UNKNOWN:
 287                return _("unknown:");
 288        case DIFF_STATUS_UNMERGED:
 289                return _("unmerged:");
 290        default:
 291                return NULL;
 292        }
 293}
 294
 295static int maxwidth(const char *(*label)(int), int minval, int maxval)
 296{
 297        int result = 0, i;
 298
 299        for (i = minval; i <= maxval; i++) {
 300                const char *s = label(i);
 301                int len = s ? utf8_strwidth(s) : 0;
 302                if (len > result)
 303                        result = len;
 304        }
 305        return result;
 306}
 307
 308static void wt_longstatus_print_unmerged_data(struct wt_status *s,
 309                                              struct string_list_item *it)
 310{
 311        const char *c = color(WT_STATUS_UNMERGED, s);
 312        struct wt_status_change_data *d = it->util;
 313        struct strbuf onebuf = STRBUF_INIT;
 314        static char *padding;
 315        static int label_width;
 316        const char *one, *how;
 317        int len;
 318
 319        if (!padding) {
 320                label_width = maxwidth(wt_status_unmerged_status_string, 1, 7);
 321                label_width += strlen(" ");
 322                padding = xmallocz(label_width);
 323                memset(padding, ' ', label_width);
 324        }
 325
 326        one = quote_path(it->string, s->prefix, &onebuf);
 327        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 328
 329        how = wt_status_unmerged_status_string(d->stagemask);
 330        len = label_width - utf8_strwidth(how);
 331        status_printf_more(s, c, "%s%.*s%s\n", how, len, padding, one);
 332        strbuf_release(&onebuf);
 333}
 334
 335static void wt_longstatus_print_change_data(struct wt_status *s,
 336                                            int change_type,
 337                                            struct string_list_item *it)
 338{
 339        struct wt_status_change_data *d = it->util;
 340        const char *c = color(change_type, s);
 341        int status;
 342        char *one_name;
 343        char *two_name;
 344        const char *one, *two;
 345        struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
 346        struct strbuf extra = STRBUF_INIT;
 347        static char *padding;
 348        static int label_width;
 349        const char *what;
 350        int len;
 351
 352        if (!padding) {
 353                /* If DIFF_STATUS_* uses outside the range [A..Z], we're in trouble */
 354                label_width = maxwidth(wt_status_diff_status_string, 'A', 'Z');
 355                label_width += strlen(" ");
 356                padding = xmallocz(label_width);
 357                memset(padding, ' ', label_width);
 358        }
 359
 360        one_name = two_name = it->string;
 361        switch (change_type) {
 362        case WT_STATUS_UPDATED:
 363                status = d->index_status;
 364                break;
 365        case WT_STATUS_CHANGED:
 366                if (d->new_submodule_commits || d->dirty_submodule) {
 367                        strbuf_addstr(&extra, " (");
 368                        if (d->new_submodule_commits)
 369                                strbuf_addstr(&extra, _("new commits, "));
 370                        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 371                                strbuf_addstr(&extra, _("modified content, "));
 372                        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 373                                strbuf_addstr(&extra, _("untracked content, "));
 374                        strbuf_setlen(&extra, extra.len - 2);
 375                        strbuf_addch(&extra, ')');
 376                }
 377                status = d->worktree_status;
 378                break;
 379        default:
 380                die("BUG: unhandled change_type %d in wt_longstatus_print_change_data",
 381                    change_type);
 382        }
 383
 384        /*
 385         * Only pick up the rename it's relevant. If the rename is for
 386         * the changed section and we're printing the updated section,
 387         * ignore it.
 388         */
 389        if (d->rename_status == status)
 390                one_name = d->rename_source;
 391
 392        one = quote_path(one_name, s->prefix, &onebuf);
 393        two = quote_path(two_name, s->prefix, &twobuf);
 394
 395        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 396        what = wt_status_diff_status_string(status);
 397        if (!what)
 398                die("BUG: unhandled diff status %c", status);
 399        len = label_width - utf8_strwidth(what);
 400        assert(len >= 0);
 401        if (one_name != two_name)
 402                status_printf_more(s, c, "%s%.*s%s -> %s",
 403                                   what, len, padding, one, two);
 404        else
 405                status_printf_more(s, c, "%s%.*s%s",
 406                                   what, len, padding, one);
 407        if (extra.len) {
 408                status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 409                strbuf_release(&extra);
 410        }
 411        status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 412        strbuf_release(&onebuf);
 413        strbuf_release(&twobuf);
 414}
 415
 416static char short_submodule_status(struct wt_status_change_data *d)
 417{
 418        if (d->new_submodule_commits)
 419                return 'M';
 420        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 421                return 'm';
 422        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 423                return '?';
 424        return d->worktree_status;
 425}
 426
 427static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 428                                         struct diff_options *options,
 429                                         void *data)
 430{
 431        struct wt_status *s = data;
 432        int i;
 433
 434        if (!q->nr)
 435                return;
 436        s->workdir_dirty = 1;
 437        for (i = 0; i < q->nr; i++) {
 438                struct diff_filepair *p;
 439                struct string_list_item *it;
 440                struct wt_status_change_data *d;
 441
 442                p = q->queue[i];
 443                it = string_list_insert(&s->change, p->two->path);
 444                d = it->util;
 445                if (!d) {
 446                        d = xcalloc(1, sizeof(*d));
 447                        it->util = d;
 448                }
 449                if (!d->worktree_status)
 450                        d->worktree_status = p->status;
 451                if (S_ISGITLINK(p->two->mode)) {
 452                        d->dirty_submodule = p->two->dirty_submodule;
 453                        d->new_submodule_commits = !!oidcmp(&p->one->oid,
 454                                                            &p->two->oid);
 455                        if (s->status_format == STATUS_FORMAT_SHORT)
 456                                d->worktree_status = short_submodule_status(d);
 457                }
 458
 459                switch (p->status) {
 460                case DIFF_STATUS_ADDED:
 461                        d->mode_worktree = p->two->mode;
 462                        break;
 463
 464                case DIFF_STATUS_DELETED:
 465                        d->mode_index = p->one->mode;
 466                        oidcpy(&d->oid_index, &p->one->oid);
 467                        /* mode_worktree is zero for a delete. */
 468                        break;
 469
 470                case DIFF_STATUS_COPIED:
 471                case DIFF_STATUS_RENAMED:
 472                        if (d->rename_status)
 473                                die("BUG: multiple renames on the same target? how?");
 474                        d->rename_source = xstrdup(p->one->path);
 475                        d->rename_score = p->score * 100 / MAX_SCORE;
 476                        d->rename_status = p->status;
 477                        /* fallthru */
 478                case DIFF_STATUS_MODIFIED:
 479                case DIFF_STATUS_TYPE_CHANGED:
 480                case DIFF_STATUS_UNMERGED:
 481                        d->mode_index = p->one->mode;
 482                        d->mode_worktree = p->two->mode;
 483                        oidcpy(&d->oid_index, &p->one->oid);
 484                        break;
 485
 486                default:
 487                        die("BUG: unhandled diff-files status '%c'", p->status);
 488                        break;
 489                }
 490
 491        }
 492}
 493
 494static int unmerged_mask(const char *path)
 495{
 496        int pos, mask;
 497        const struct cache_entry *ce;
 498
 499        pos = cache_name_pos(path, strlen(path));
 500        if (0 <= pos)
 501                return 0;
 502
 503        mask = 0;
 504        pos = -pos-1;
 505        while (pos < active_nr) {
 506                ce = active_cache[pos++];
 507                if (strcmp(ce->name, path) || !ce_stage(ce))
 508                        break;
 509                mask |= (1 << (ce_stage(ce) - 1));
 510        }
 511        return mask;
 512}
 513
 514static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 515                                         struct diff_options *options,
 516                                         void *data)
 517{
 518        struct wt_status *s = data;
 519        int i;
 520
 521        for (i = 0; i < q->nr; i++) {
 522                struct diff_filepair *p;
 523                struct string_list_item *it;
 524                struct wt_status_change_data *d;
 525
 526                p = q->queue[i];
 527                it = string_list_insert(&s->change, p->two->path);
 528                d = it->util;
 529                if (!d) {
 530                        d = xcalloc(1, sizeof(*d));
 531                        it->util = d;
 532                }
 533                if (!d->index_status)
 534                        d->index_status = p->status;
 535                switch (p->status) {
 536                case DIFF_STATUS_ADDED:
 537                        /* Leave {mode,oid}_head zero for an add. */
 538                        d->mode_index = p->two->mode;
 539                        oidcpy(&d->oid_index, &p->two->oid);
 540                        break;
 541                case DIFF_STATUS_DELETED:
 542                        d->mode_head = p->one->mode;
 543                        oidcpy(&d->oid_head, &p->one->oid);
 544                        /* Leave {mode,oid}_index zero for a delete. */
 545                        break;
 546
 547                case DIFF_STATUS_COPIED:
 548                case DIFF_STATUS_RENAMED:
 549                        if (d->rename_status)
 550                                die("BUG: multiple renames on the same target? how?");
 551                        d->rename_source = xstrdup(p->one->path);
 552                        d->rename_score = p->score * 100 / MAX_SCORE;
 553                        d->rename_status = p->status;
 554                        /* fallthru */
 555                case DIFF_STATUS_MODIFIED:
 556                case DIFF_STATUS_TYPE_CHANGED:
 557                        d->mode_head = p->one->mode;
 558                        d->mode_index = p->two->mode;
 559                        oidcpy(&d->oid_head, &p->one->oid);
 560                        oidcpy(&d->oid_index, &p->two->oid);
 561                        break;
 562                case DIFF_STATUS_UNMERGED:
 563                        d->stagemask = unmerged_mask(p->two->path);
 564                        /*
 565                         * Don't bother setting {mode,oid}_{head,index} since the print
 566                         * code will output the stage values directly and not use the
 567                         * values in these fields.
 568                         */
 569                        break;
 570
 571                default:
 572                        die("BUG: unhandled diff-index status '%c'", p->status);
 573                        break;
 574                }
 575        }
 576}
 577
 578static void wt_status_collect_changes_worktree(struct wt_status *s)
 579{
 580        struct rev_info rev;
 581
 582        init_revisions(&rev, NULL);
 583        setup_revisions(0, NULL, &rev, NULL);
 584        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 585        rev.diffopt.flags.dirty_submodules = 1;
 586        rev.diffopt.ita_invisible_in_index = 1;
 587        if (!s->show_untracked_files)
 588                rev.diffopt.flags.ignore_untracked_in_submodules = 1;
 589        if (s->ignore_submodule_arg) {
 590                rev.diffopt.flags.override_submodule_config = 1;
 591                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 592        }
 593        rev.diffopt.format_callback = wt_status_collect_changed_cb;
 594        rev.diffopt.format_callback_data = s;
 595        copy_pathspec(&rev.prune_data, &s->pathspec);
 596        run_diff_files(&rev, 0);
 597}
 598
 599static void wt_status_collect_changes_index(struct wt_status *s)
 600{
 601        struct rev_info rev;
 602        struct setup_revision_opt opt;
 603
 604        init_revisions(&rev, NULL);
 605        memset(&opt, 0, sizeof(opt));
 606        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 607        setup_revisions(0, NULL, &rev, &opt);
 608
 609        rev.diffopt.flags.override_submodule_config = 1;
 610        rev.diffopt.ita_invisible_in_index = 1;
 611        if (s->ignore_submodule_arg) {
 612                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 613        } else {
 614                /*
 615                 * Unless the user did explicitly request a submodule ignore
 616                 * mode by passing a command line option we do not ignore any
 617                 * changed submodule SHA-1s when comparing index and HEAD, no
 618                 * matter what is configured. Otherwise the user won't be
 619                 * shown any submodules she manually added (and which are
 620                 * staged to be committed), which would be really confusing.
 621                 */
 622                handle_ignore_submodules_arg(&rev.diffopt, "dirty");
 623        }
 624
 625        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 626        rev.diffopt.format_callback = wt_status_collect_updated_cb;
 627        rev.diffopt.format_callback_data = s;
 628        copy_pathspec(&rev.prune_data, &s->pathspec);
 629        run_diff_index(&rev, 1);
 630}
 631
 632static void wt_status_collect_changes_initial(struct wt_status *s)
 633{
 634        int i;
 635
 636        for (i = 0; i < active_nr; i++) {
 637                struct string_list_item *it;
 638                struct wt_status_change_data *d;
 639                const struct cache_entry *ce = active_cache[i];
 640
 641                if (!ce_path_match(ce, &s->pathspec, NULL))
 642                        continue;
 643                if (ce_intent_to_add(ce))
 644                        continue;
 645                it = string_list_insert(&s->change, ce->name);
 646                d = it->util;
 647                if (!d) {
 648                        d = xcalloc(1, sizeof(*d));
 649                        it->util = d;
 650                }
 651                if (ce_stage(ce)) {
 652                        d->index_status = DIFF_STATUS_UNMERGED;
 653                        d->stagemask |= (1 << (ce_stage(ce) - 1));
 654                        /*
 655                         * Don't bother setting {mode,oid}_{head,index} since the print
 656                         * code will output the stage values directly and not use the
 657                         * values in these fields.
 658                         */
 659                } else {
 660                        d->index_status = DIFF_STATUS_ADDED;
 661                        /* Leave {mode,oid}_head zero for adds. */
 662                        d->mode_index = ce->ce_mode;
 663                        oidcpy(&d->oid_index, &ce->oid);
 664                }
 665        }
 666}
 667
 668static void wt_status_collect_untracked(struct wt_status *s)
 669{
 670        int i;
 671        struct dir_struct dir;
 672        uint64_t t_begin = getnanotime();
 673
 674        if (!s->show_untracked_files)
 675                return;
 676
 677        memset(&dir, 0, sizeof(dir));
 678        if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 679                dir.flags |=
 680                        DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 681        if (s->show_ignored_mode) {
 682                dir.flags |= DIR_SHOW_IGNORED_TOO;
 683
 684                if (s->show_ignored_mode == SHOW_MATCHING_IGNORED)
 685                        dir.flags |= DIR_SHOW_IGNORED_TOO_MODE_MATCHING;
 686        } else {
 687                dir.untracked = the_index.untracked;
 688        }
 689
 690        setup_standard_excludes(&dir);
 691
 692        fill_directory(&dir, &the_index, &s->pathspec);
 693
 694        for (i = 0; i < dir.nr; i++) {
 695                struct dir_entry *ent = dir.entries[i];
 696                if (cache_name_is_other(ent->name, ent->len) &&
 697                    dir_path_match(ent, &s->pathspec, 0, NULL))
 698                        string_list_insert(&s->untracked, ent->name);
 699                free(ent);
 700        }
 701
 702        for (i = 0; i < dir.ignored_nr; i++) {
 703                struct dir_entry *ent = dir.ignored[i];
 704                if (cache_name_is_other(ent->name, ent->len) &&
 705                    dir_path_match(ent, &s->pathspec, 0, NULL))
 706                        string_list_insert(&s->ignored, ent->name);
 707                free(ent);
 708        }
 709
 710        free(dir.entries);
 711        free(dir.ignored);
 712        clear_directory(&dir);
 713
 714        if (advice_status_u_option)
 715                s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 716}
 717
 718void wt_status_collect(struct wt_status *s)
 719{
 720        wt_status_collect_changes_worktree(s);
 721
 722        if (s->is_initial)
 723                wt_status_collect_changes_initial(s);
 724        else
 725                wt_status_collect_changes_index(s);
 726        wt_status_collect_untracked(s);
 727}
 728
 729static void wt_longstatus_print_unmerged(struct wt_status *s)
 730{
 731        int shown_header = 0;
 732        int i;
 733
 734        for (i = 0; i < s->change.nr; i++) {
 735                struct wt_status_change_data *d;
 736                struct string_list_item *it;
 737                it = &(s->change.items[i]);
 738                d = it->util;
 739                if (!d->stagemask)
 740                        continue;
 741                if (!shown_header) {
 742                        wt_longstatus_print_unmerged_header(s);
 743                        shown_header = 1;
 744                }
 745                wt_longstatus_print_unmerged_data(s, it);
 746        }
 747        if (shown_header)
 748                wt_longstatus_print_trailer(s);
 749
 750}
 751
 752static void wt_longstatus_print_updated(struct wt_status *s)
 753{
 754        int shown_header = 0;
 755        int i;
 756
 757        for (i = 0; i < s->change.nr; i++) {
 758                struct wt_status_change_data *d;
 759                struct string_list_item *it;
 760                it = &(s->change.items[i]);
 761                d = it->util;
 762                if (!d->index_status ||
 763                    d->index_status == DIFF_STATUS_UNMERGED)
 764                        continue;
 765                if (!shown_header) {
 766                        wt_longstatus_print_cached_header(s);
 767                        s->commitable = 1;
 768                        shown_header = 1;
 769                }
 770                wt_longstatus_print_change_data(s, WT_STATUS_UPDATED, it);
 771        }
 772        if (shown_header)
 773                wt_longstatus_print_trailer(s);
 774}
 775
 776/*
 777 * -1 : has delete
 778 *  0 : no change
 779 *  1 : some change but no delete
 780 */
 781static int wt_status_check_worktree_changes(struct wt_status *s,
 782                                             int *dirty_submodules)
 783{
 784        int i;
 785        int changes = 0;
 786
 787        *dirty_submodules = 0;
 788
 789        for (i = 0; i < s->change.nr; i++) {
 790                struct wt_status_change_data *d;
 791                d = s->change.items[i].util;
 792                if (!d->worktree_status ||
 793                    d->worktree_status == DIFF_STATUS_UNMERGED)
 794                        continue;
 795                if (!changes)
 796                        changes = 1;
 797                if (d->dirty_submodule)
 798                        *dirty_submodules = 1;
 799                if (d->worktree_status == DIFF_STATUS_DELETED)
 800                        changes = -1;
 801        }
 802        return changes;
 803}
 804
 805static void wt_longstatus_print_changed(struct wt_status *s)
 806{
 807        int i, dirty_submodules;
 808        int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 809
 810        if (!worktree_changes)
 811                return;
 812
 813        wt_longstatus_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 814
 815        for (i = 0; i < s->change.nr; i++) {
 816                struct wt_status_change_data *d;
 817                struct string_list_item *it;
 818                it = &(s->change.items[i]);
 819                d = it->util;
 820                if (!d->worktree_status ||
 821                    d->worktree_status == DIFF_STATUS_UNMERGED)
 822                        continue;
 823                wt_longstatus_print_change_data(s, WT_STATUS_CHANGED, it);
 824        }
 825        wt_longstatus_print_trailer(s);
 826}
 827
 828static int stash_count_refs(struct object_id *ooid, struct object_id *noid,
 829                            const char *email, timestamp_t timestamp, int tz,
 830                            const char *message, void *cb_data)
 831{
 832        int *c = cb_data;
 833        (*c)++;
 834        return 0;
 835}
 836
 837static void wt_longstatus_print_stash_summary(struct wt_status *s)
 838{
 839        int stash_count = 0;
 840
 841        for_each_reflog_ent("refs/stash", stash_count_refs, &stash_count);
 842        if (stash_count > 0)
 843                status_printf_ln(s, GIT_COLOR_NORMAL,
 844                                 Q_("Your stash currently has %d entry",
 845                                    "Your stash currently has %d entries", stash_count),
 846                                 stash_count);
 847}
 848
 849static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncommitted)
 850{
 851        struct child_process sm_summary = CHILD_PROCESS_INIT;
 852        struct strbuf cmd_stdout = STRBUF_INIT;
 853        struct strbuf summary = STRBUF_INIT;
 854        char *summary_content;
 855
 856        argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 857                         s->index_file);
 858
 859        argv_array_push(&sm_summary.args, "submodule");
 860        argv_array_push(&sm_summary.args, "summary");
 861        argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 862        argv_array_push(&sm_summary.args, "--for-status");
 863        argv_array_push(&sm_summary.args, "--summary-limit");
 864        argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 865        if (!uncommitted)
 866                argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 867
 868        sm_summary.git_cmd = 1;
 869        sm_summary.no_stdin = 1;
 870
 871        capture_command(&sm_summary, &cmd_stdout, 1024);
 872
 873        /* prepend header, only if there's an actual output */
 874        if (cmd_stdout.len) {
 875                if (uncommitted)
 876                        strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 877                else
 878                        strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 879                strbuf_addstr(&summary, "\n\n");
 880        }
 881        strbuf_addbuf(&summary, &cmd_stdout);
 882        strbuf_release(&cmd_stdout);
 883
 884        if (s->display_comment_prefix) {
 885                size_t len;
 886                summary_content = strbuf_detach(&summary, &len);
 887                strbuf_add_commented_lines(&summary, summary_content, len);
 888                free(summary_content);
 889        }
 890
 891        fputs(summary.buf, s->fp);
 892        strbuf_release(&summary);
 893}
 894
 895static void wt_longstatus_print_other(struct wt_status *s,
 896                                      struct string_list *l,
 897                                      const char *what,
 898                                      const char *how)
 899{
 900        int i;
 901        struct strbuf buf = STRBUF_INIT;
 902        static struct string_list output = STRING_LIST_INIT_DUP;
 903        struct column_options copts;
 904
 905        if (!l->nr)
 906                return;
 907
 908        wt_longstatus_print_other_header(s, what, how);
 909
 910        for (i = 0; i < l->nr; i++) {
 911                struct string_list_item *it;
 912                const char *path;
 913                it = &(l->items[i]);
 914                path = quote_path(it->string, s->prefix, &buf);
 915                if (column_active(s->colopts)) {
 916                        string_list_append(&output, path);
 917                        continue;
 918                }
 919                status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 920                status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 921                                   "%s\n", path);
 922        }
 923
 924        strbuf_release(&buf);
 925        if (!column_active(s->colopts))
 926                goto conclude;
 927
 928        strbuf_addf(&buf, "%s%s\t%s",
 929                    color(WT_STATUS_HEADER, s),
 930                    s->display_comment_prefix ? "#" : "",
 931                    color(WT_STATUS_UNTRACKED, s));
 932        memset(&copts, 0, sizeof(copts));
 933        copts.padding = 1;
 934        copts.indent = buf.buf;
 935        if (want_color(s->use_color))
 936                copts.nl = GIT_COLOR_RESET "\n";
 937        print_columns(&output, s->colopts, &copts);
 938        string_list_clear(&output, 0);
 939        strbuf_release(&buf);
 940conclude:
 941        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 942}
 943
 944size_t wt_status_locate_end(const char *s, size_t len)
 945{
 946        const char *p;
 947        struct strbuf pattern = STRBUF_INIT;
 948
 949        strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
 950        if (starts_with(s, pattern.buf + 1))
 951                len = 0;
 952        else if ((p = strstr(s, pattern.buf)))
 953                len = p - s + 1;
 954        strbuf_release(&pattern);
 955        return len;
 956}
 957
 958void wt_status_add_cut_line(FILE *fp)
 959{
 960        const char *explanation = _("Do not modify or remove the line above.\nEverything below it will be ignored.");
 961        struct strbuf buf = STRBUF_INIT;
 962
 963        fprintf(fp, "%c %s", comment_line_char, cut_line);
 964        strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
 965        fputs(buf.buf, fp);
 966        strbuf_release(&buf);
 967}
 968
 969static void wt_longstatus_print_verbose(struct wt_status *s)
 970{
 971        struct rev_info rev;
 972        struct setup_revision_opt opt;
 973        int dirty_submodules;
 974        const char *c = color(WT_STATUS_HEADER, s);
 975
 976        init_revisions(&rev, NULL);
 977        rev.diffopt.flags.allow_textconv = 1;
 978        rev.diffopt.ita_invisible_in_index = 1;
 979
 980        memset(&opt, 0, sizeof(opt));
 981        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 982        setup_revisions(0, NULL, &rev, &opt);
 983
 984        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 985        rev.diffopt.file = s->fp;
 986        rev.diffopt.close_file = 0;
 987        /*
 988         * If we're not going to stdout, then we definitely don't
 989         * want color, since we are going to the commit message
 990         * file (and even the "auto" setting won't work, since it
 991         * will have checked isatty on stdout). But we then do want
 992         * to insert the scissor line here to reliably remove the
 993         * diff before committing.
 994         */
 995        if (s->fp != stdout) {
 996                rev.diffopt.use_color = 0;
 997                wt_status_add_cut_line(s->fp);
 998        }
 999        if (s->verbose > 1 && s->commitable) {
1000                /* print_updated() printed a header, so do we */
1001                if (s->fp != stdout)
1002                        wt_longstatus_print_trailer(s);
1003                status_printf_ln(s, c, _("Changes to be committed:"));
1004                rev.diffopt.a_prefix = "c/";
1005                rev.diffopt.b_prefix = "i/";
1006        } /* else use prefix as per user config */
1007        run_diff_index(&rev, 1);
1008        if (s->verbose > 1 &&
1009            wt_status_check_worktree_changes(s, &dirty_submodules)) {
1010                status_printf_ln(s, c,
1011                        "--------------------------------------------------");
1012                status_printf_ln(s, c, _("Changes not staged for commit:"));
1013                setup_work_tree();
1014                rev.diffopt.a_prefix = "i/";
1015                rev.diffopt.b_prefix = "w/";
1016                run_diff_files(&rev, 0);
1017        }
1018}
1019
1020static void wt_longstatus_print_tracking(struct wt_status *s)
1021{
1022        struct strbuf sb = STRBUF_INIT;
1023        const char *cp, *ep, *branch_name;
1024        struct branch *branch;
1025        char comment_line_string[3];
1026        int i;
1027
1028        assert(s->branch && !s->is_initial);
1029        if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
1030                return;
1031        branch = branch_get(branch_name);
1032        if (!format_tracking_info(branch, &sb, s->ahead_behind_flags))
1033                return;
1034
1035        i = 0;
1036        if (s->display_comment_prefix) {
1037                comment_line_string[i++] = comment_line_char;
1038                comment_line_string[i++] = ' ';
1039        }
1040        comment_line_string[i] = '\0';
1041
1042        for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
1043                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
1044                                 "%s%.*s", comment_line_string,
1045                                 (int)(ep - cp), cp);
1046        if (s->display_comment_prefix)
1047                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
1048                                 comment_line_char);
1049        else
1050                fputs("\n", s->fp);
1051        strbuf_release(&sb);
1052}
1053
1054static int has_unmerged(struct wt_status *s)
1055{
1056        int i;
1057
1058        for (i = 0; i < s->change.nr; i++) {
1059                struct wt_status_change_data *d;
1060                d = s->change.items[i].util;
1061                if (d->stagemask)
1062                        return 1;
1063        }
1064        return 0;
1065}
1066
1067static void show_merge_in_progress(struct wt_status *s,
1068                                struct wt_status_state *state,
1069                                const char *color)
1070{
1071        if (has_unmerged(s)) {
1072                status_printf_ln(s, color, _("You have unmerged paths."));
1073                if (s->hints) {
1074                        status_printf_ln(s, color,
1075                                         _("  (fix conflicts and run \"git commit\")"));
1076                        status_printf_ln(s, color,
1077                                         _("  (use \"git merge --abort\" to abort the merge)"));
1078                }
1079        } else {
1080                s-> commitable = 1;
1081                status_printf_ln(s, color,
1082                        _("All conflicts fixed but you are still merging."));
1083                if (s->hints)
1084                        status_printf_ln(s, color,
1085                                _("  (use \"git commit\" to conclude merge)"));
1086        }
1087        wt_longstatus_print_trailer(s);
1088}
1089
1090static void show_am_in_progress(struct wt_status *s,
1091                                struct wt_status_state *state,
1092                                const char *color)
1093{
1094        status_printf_ln(s, color,
1095                _("You are in the middle of an am session."));
1096        if (state->am_empty_patch)
1097                status_printf_ln(s, color,
1098                        _("The current patch is empty."));
1099        if (s->hints) {
1100                if (!state->am_empty_patch)
1101                        status_printf_ln(s, color,
1102                                _("  (fix conflicts and then run \"git am --continue\")"));
1103                status_printf_ln(s, color,
1104                        _("  (use \"git am --skip\" to skip this patch)"));
1105                status_printf_ln(s, color,
1106                        _("  (use \"git am --abort\" to restore the original branch)"));
1107        }
1108        wt_longstatus_print_trailer(s);
1109}
1110
1111static char *read_line_from_git_path(const char *filename)
1112{
1113        struct strbuf buf = STRBUF_INIT;
1114        FILE *fp = fopen_or_warn(git_path("%s", filename), "r");
1115
1116        if (!fp) {
1117                strbuf_release(&buf);
1118                return NULL;
1119        }
1120        strbuf_getline_lf(&buf, fp);
1121        if (!fclose(fp)) {
1122                return strbuf_detach(&buf, NULL);
1123        } else {
1124                strbuf_release(&buf);
1125                return NULL;
1126        }
1127}
1128
1129static int split_commit_in_progress(struct wt_status *s)
1130{
1131        int split_in_progress = 0;
1132        char *head, *orig_head, *rebase_amend, *rebase_orig_head;
1133
1134        if ((!s->amend && !s->nowarn && !s->workdir_dirty) ||
1135            !s->branch || strcmp(s->branch, "HEAD"))
1136                return 0;
1137
1138        head = read_line_from_git_path("HEAD");
1139        orig_head = read_line_from_git_path("ORIG_HEAD");
1140        rebase_amend = read_line_from_git_path("rebase-merge/amend");
1141        rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1142
1143        if (!head || !orig_head || !rebase_amend || !rebase_orig_head)
1144                ; /* fall through, no split in progress */
1145        else if (!strcmp(rebase_amend, rebase_orig_head))
1146                split_in_progress = !!strcmp(head, rebase_amend);
1147        else if (strcmp(orig_head, rebase_orig_head))
1148                split_in_progress = 1;
1149
1150        free(head);
1151        free(orig_head);
1152        free(rebase_amend);
1153        free(rebase_orig_head);
1154
1155        return split_in_progress;
1156}
1157
1158/*
1159 * Turn
1160 * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1161 * into
1162 * "pick d6a2f03 some message"
1163 *
1164 * The function assumes that the line does not contain useless spaces
1165 * before or after the command.
1166 */
1167static void abbrev_sha1_in_line(struct strbuf *line)
1168{
1169        struct strbuf **split;
1170        int i;
1171
1172        if (starts_with(line->buf, "exec ") ||
1173            starts_with(line->buf, "x "))
1174                return;
1175
1176        split = strbuf_split_max(line, ' ', 3);
1177        if (split[0] && split[1]) {
1178                struct object_id oid;
1179
1180                /*
1181                 * strbuf_split_max left a space. Trim it and re-add
1182                 * it after abbreviation.
1183                 */
1184                strbuf_trim(split[1]);
1185                if (!get_oid(split[1]->buf, &oid)) {
1186                        strbuf_reset(split[1]);
1187                        strbuf_add_unique_abbrev(split[1], &oid,
1188                                                 DEFAULT_ABBREV);
1189                        strbuf_addch(split[1], ' ');
1190                        strbuf_reset(line);
1191                        for (i = 0; split[i]; i++)
1192                                strbuf_addbuf(line, split[i]);
1193                }
1194        }
1195        strbuf_list_free(split);
1196}
1197
1198static int read_rebase_todolist(const char *fname, struct string_list *lines)
1199{
1200        struct strbuf line = STRBUF_INIT;
1201        FILE *f = fopen(git_path("%s", fname), "r");
1202
1203        if (!f) {
1204                if (errno == ENOENT)
1205                        return -1;
1206                die_errno("Could not open file %s for reading",
1207                          git_path("%s", fname));
1208        }
1209        while (!strbuf_getline_lf(&line, f)) {
1210                if (line.len && line.buf[0] == comment_line_char)
1211                        continue;
1212                strbuf_trim(&line);
1213                if (!line.len)
1214                        continue;
1215                abbrev_sha1_in_line(&line);
1216                string_list_append(lines, line.buf);
1217        }
1218        fclose(f);
1219        strbuf_release(&line);
1220        return 0;
1221}
1222
1223static void show_rebase_information(struct wt_status *s,
1224                                        struct wt_status_state *state,
1225                                        const char *color)
1226{
1227        if (state->rebase_interactive_in_progress) {
1228                int i;
1229                int nr_lines_to_show = 2;
1230
1231                struct string_list have_done = STRING_LIST_INIT_DUP;
1232                struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1233
1234                read_rebase_todolist("rebase-merge/done", &have_done);
1235                if (read_rebase_todolist("rebase-merge/git-rebase-todo",
1236                                         &yet_to_do))
1237                        status_printf_ln(s, color,
1238                                _("git-rebase-todo is missing."));
1239                if (have_done.nr == 0)
1240                        status_printf_ln(s, color, _("No commands done."));
1241                else {
1242                        status_printf_ln(s, color,
1243                                Q_("Last command done (%d command done):",
1244                                        "Last commands done (%d commands done):",
1245                                        have_done.nr),
1246                                have_done.nr);
1247                        for (i = (have_done.nr > nr_lines_to_show)
1248                                ? have_done.nr - nr_lines_to_show : 0;
1249                                i < have_done.nr;
1250                                i++)
1251                                status_printf_ln(s, color, "   %s", have_done.items[i].string);
1252                        if (have_done.nr > nr_lines_to_show && s->hints)
1253                                status_printf_ln(s, color,
1254                                        _("  (see more in file %s)"), git_path("rebase-merge/done"));
1255                }
1256
1257                if (yet_to_do.nr == 0)
1258                        status_printf_ln(s, color,
1259                                         _("No commands remaining."));
1260                else {
1261                        status_printf_ln(s, color,
1262                                Q_("Next command to do (%d remaining command):",
1263                                        "Next commands to do (%d remaining commands):",
1264                                        yet_to_do.nr),
1265                                yet_to_do.nr);
1266                        for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1267                                status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1268                        if (s->hints)
1269                                status_printf_ln(s, color,
1270                                        _("  (use \"git rebase --edit-todo\" to view and edit)"));
1271                }
1272                string_list_clear(&yet_to_do, 0);
1273                string_list_clear(&have_done, 0);
1274        }
1275}
1276
1277static void print_rebase_state(struct wt_status *s,
1278                                struct wt_status_state *state,
1279                                const char *color)
1280{
1281        if (state->branch)
1282                status_printf_ln(s, color,
1283                                 _("You are currently rebasing branch '%s' on '%s'."),
1284                                 state->branch,
1285                                 state->onto);
1286        else
1287                status_printf_ln(s, color,
1288                                 _("You are currently rebasing."));
1289}
1290
1291static void show_rebase_in_progress(struct wt_status *s,
1292                                struct wt_status_state *state,
1293                                const char *color)
1294{
1295        struct stat st;
1296
1297        show_rebase_information(s, state, color);
1298        if (has_unmerged(s)) {
1299                print_rebase_state(s, state, color);
1300                if (s->hints) {
1301                        status_printf_ln(s, color,
1302                                _("  (fix conflicts and then run \"git rebase --continue\")"));
1303                        status_printf_ln(s, color,
1304                                _("  (use \"git rebase --skip\" to skip this patch)"));
1305                        status_printf_ln(s, color,
1306                                _("  (use \"git rebase --abort\" to check out the original branch)"));
1307                }
1308        } else if (state->rebase_in_progress || !stat(git_path_merge_msg(), &st)) {
1309                print_rebase_state(s, state, color);
1310                if (s->hints)
1311                        status_printf_ln(s, color,
1312                                _("  (all conflicts fixed: run \"git rebase --continue\")"));
1313        } else if (split_commit_in_progress(s)) {
1314                if (state->branch)
1315                        status_printf_ln(s, color,
1316                                         _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1317                                         state->branch,
1318                                         state->onto);
1319                else
1320                        status_printf_ln(s, color,
1321                                         _("You are currently splitting a commit during a rebase."));
1322                if (s->hints)
1323                        status_printf_ln(s, color,
1324                                _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1325        } else {
1326                if (state->branch)
1327                        status_printf_ln(s, color,
1328                                         _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1329                                         state->branch,
1330                                         state->onto);
1331                else
1332                        status_printf_ln(s, color,
1333                                         _("You are currently editing a commit during a rebase."));
1334                if (s->hints && !s->amend) {
1335                        status_printf_ln(s, color,
1336                                _("  (use \"git commit --amend\" to amend the current commit)"));
1337                        status_printf_ln(s, color,
1338                                _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1339                }
1340        }
1341        wt_longstatus_print_trailer(s);
1342}
1343
1344static void show_cherry_pick_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 cherry-picking commit %s."),
1349                        find_unique_abbrev(&state->cherry_pick_head_oid, DEFAULT_ABBREV));
1350        if (s->hints) {
1351                if (has_unmerged(s))
1352                        status_printf_ln(s, color,
1353                                _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1354                else
1355                        status_printf_ln(s, color,
1356                                _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1357                status_printf_ln(s, color,
1358                        _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1359        }
1360        wt_longstatus_print_trailer(s);
1361}
1362
1363static void show_revert_in_progress(struct wt_status *s,
1364                                        struct wt_status_state *state,
1365                                        const char *color)
1366{
1367        status_printf_ln(s, color, _("You are currently reverting commit %s."),
1368                         find_unique_abbrev(&state->revert_head_oid, DEFAULT_ABBREV));
1369        if (s->hints) {
1370                if (has_unmerged(s))
1371                        status_printf_ln(s, color,
1372                                _("  (fix conflicts and run \"git revert --continue\")"));
1373                else
1374                        status_printf_ln(s, color,
1375                                _("  (all conflicts fixed: run \"git revert --continue\")"));
1376                status_printf_ln(s, color,
1377                        _("  (use \"git revert --abort\" to cancel the revert operation)"));
1378        }
1379        wt_longstatus_print_trailer(s);
1380}
1381
1382static void show_bisect_in_progress(struct wt_status *s,
1383                                struct wt_status_state *state,
1384                                const char *color)
1385{
1386        if (state->branch)
1387                status_printf_ln(s, color,
1388                                 _("You are currently bisecting, started from branch '%s'."),
1389                                 state->branch);
1390        else
1391                status_printf_ln(s, color,
1392                                 _("You are currently bisecting."));
1393        if (s->hints)
1394                status_printf_ln(s, color,
1395                        _("  (use \"git bisect reset\" to get back to the original branch)"));
1396        wt_longstatus_print_trailer(s);
1397}
1398
1399/*
1400 * Extract branch information from rebase/bisect
1401 */
1402static char *get_branch(const struct worktree *wt, const char *path)
1403{
1404        struct strbuf sb = STRBUF_INIT;
1405        struct object_id oid;
1406        const char *branch_name;
1407
1408        if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
1409                goto got_nothing;
1410
1411        while (sb.len && sb.buf[sb.len - 1] == '\n')
1412                strbuf_setlen(&sb, sb.len - 1);
1413        if (!sb.len)
1414                goto got_nothing;
1415        if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1416                strbuf_remove(&sb, 0, branch_name - sb.buf);
1417        else if (starts_with(sb.buf, "refs/"))
1418                ;
1419        else if (!get_oid_hex(sb.buf, &oid)) {
1420                strbuf_reset(&sb);
1421                strbuf_add_unique_abbrev(&sb, &oid, DEFAULT_ABBREV);
1422        } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1423                goto got_nothing;
1424        else                    /* bisect */
1425                ;
1426        return strbuf_detach(&sb, NULL);
1427
1428got_nothing:
1429        strbuf_release(&sb);
1430        return NULL;
1431}
1432
1433struct grab_1st_switch_cbdata {
1434        struct strbuf buf;
1435        struct object_id noid;
1436};
1437
1438static int grab_1st_switch(struct object_id *ooid, struct object_id *noid,
1439                           const char *email, timestamp_t timestamp, int tz,
1440                           const char *message, void *cb_data)
1441{
1442        struct grab_1st_switch_cbdata *cb = cb_data;
1443        const char *target = NULL, *end;
1444
1445        if (!skip_prefix(message, "checkout: moving from ", &message))
1446                return 0;
1447        target = strstr(message, " to ");
1448        if (!target)
1449                return 0;
1450        target += strlen(" to ");
1451        strbuf_reset(&cb->buf);
1452        oidcpy(&cb->noid, noid);
1453        end = strchrnul(target, '\n');
1454        strbuf_add(&cb->buf, target, end - target);
1455        if (!strcmp(cb->buf.buf, "HEAD")) {
1456                /* HEAD is relative. Resolve it to the right reflog entry. */
1457                strbuf_reset(&cb->buf);
1458                strbuf_add_unique_abbrev(&cb->buf, noid, DEFAULT_ABBREV);
1459        }
1460        return 1;
1461}
1462
1463static void wt_status_get_detached_from(struct wt_status_state *state)
1464{
1465        struct grab_1st_switch_cbdata cb;
1466        struct commit *commit;
1467        struct object_id oid;
1468        char *ref = NULL;
1469
1470        strbuf_init(&cb.buf, 0);
1471        if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1472                strbuf_release(&cb.buf);
1473                return;
1474        }
1475
1476        if (dwim_ref(cb.buf.buf, cb.buf.len, &oid, &ref) == 1 &&
1477            /* sha1 is a commit? match without further lookup */
1478            (!oidcmp(&cb.noid, &oid) ||
1479             /* perhaps sha1 is a tag, try to dereference to a commit */
1480             ((commit = lookup_commit_reference_gently(&oid, 1)) != NULL &&
1481              !oidcmp(&cb.noid, &commit->object.oid)))) {
1482                const char *from = ref;
1483                if (!skip_prefix(from, "refs/tags/", &from))
1484                        skip_prefix(from, "refs/remotes/", &from);
1485                state->detached_from = xstrdup(from);
1486        } else
1487                state->detached_from =
1488                        xstrdup(find_unique_abbrev(&cb.noid, DEFAULT_ABBREV));
1489        oidcpy(&state->detached_oid, &cb.noid);
1490        state->detached_at = !get_oid("HEAD", &oid) &&
1491                             !oidcmp(&oid, &state->detached_oid);
1492
1493        free(ref);
1494        strbuf_release(&cb.buf);
1495}
1496
1497int wt_status_check_rebase(const struct worktree *wt,
1498                           struct wt_status_state *state)
1499{
1500        struct stat st;
1501
1502        if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
1503                if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
1504                        state->am_in_progress = 1;
1505                        if (!stat(worktree_git_path(wt, "rebase-apply/patch"), &st) && !st.st_size)
1506                                state->am_empty_patch = 1;
1507                } else {
1508                        state->rebase_in_progress = 1;
1509                        state->branch = get_branch(wt, "rebase-apply/head-name");
1510                        state->onto = get_branch(wt, "rebase-apply/onto");
1511                }
1512        } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
1513                if (!stat(worktree_git_path(wt, "rebase-merge/interactive"), &st))
1514                        state->rebase_interactive_in_progress = 1;
1515                else
1516                        state->rebase_in_progress = 1;
1517                state->branch = get_branch(wt, "rebase-merge/head-name");
1518                state->onto = get_branch(wt, "rebase-merge/onto");
1519        } else
1520                return 0;
1521        return 1;
1522}
1523
1524int wt_status_check_bisect(const struct worktree *wt,
1525                           struct wt_status_state *state)
1526{
1527        struct stat st;
1528
1529        if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
1530                state->bisect_in_progress = 1;
1531                state->branch = get_branch(wt, "BISECT_START");
1532                return 1;
1533        }
1534        return 0;
1535}
1536
1537void wt_status_get_state(struct wt_status_state *state,
1538                         int get_detached_from)
1539{
1540        struct stat st;
1541        struct object_id oid;
1542
1543        if (!stat(git_path_merge_head(), &st)) {
1544                state->merge_in_progress = 1;
1545        } else if (wt_status_check_rebase(NULL, state)) {
1546                ;               /* all set */
1547        } else if (!stat(git_path_cherry_pick_head(), &st) &&
1548                        !get_oid("CHERRY_PICK_HEAD", &oid)) {
1549                state->cherry_pick_in_progress = 1;
1550                oidcpy(&state->cherry_pick_head_oid, &oid);
1551        }
1552        wt_status_check_bisect(NULL, state);
1553        if (!stat(git_path_revert_head(), &st) &&
1554            !get_oid("REVERT_HEAD", &oid)) {
1555                state->revert_in_progress = 1;
1556                oidcpy(&state->revert_head_oid, &oid);
1557        }
1558
1559        if (get_detached_from)
1560                wt_status_get_detached_from(state);
1561}
1562
1563static void wt_longstatus_print_state(struct wt_status *s,
1564                                      struct wt_status_state *state)
1565{
1566        const char *state_color = color(WT_STATUS_HEADER, s);
1567        if (state->merge_in_progress)
1568                show_merge_in_progress(s, state, state_color);
1569        else if (state->am_in_progress)
1570                show_am_in_progress(s, state, state_color);
1571        else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1572                show_rebase_in_progress(s, state, state_color);
1573        else if (state->cherry_pick_in_progress)
1574                show_cherry_pick_in_progress(s, state, state_color);
1575        else if (state->revert_in_progress)
1576                show_revert_in_progress(s, state, state_color);
1577        if (state->bisect_in_progress)
1578                show_bisect_in_progress(s, state, state_color);
1579}
1580
1581static void wt_longstatus_print(struct wt_status *s)
1582{
1583        const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1584        const char *branch_status_color = color(WT_STATUS_HEADER, s);
1585        struct wt_status_state state;
1586
1587        memset(&state, 0, sizeof(state));
1588        wt_status_get_state(&state,
1589                            s->branch && !strcmp(s->branch, "HEAD"));
1590
1591        if (s->branch) {
1592                const char *on_what = _("On branch ");
1593                const char *branch_name = s->branch;
1594                if (!strcmp(branch_name, "HEAD")) {
1595                        branch_status_color = color(WT_STATUS_NOBRANCH, s);
1596                        if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1597                                if (state.rebase_interactive_in_progress)
1598                                        on_what = _("interactive rebase in progress; onto ");
1599                                else
1600                                        on_what = _("rebase in progress; onto ");
1601                                branch_name = state.onto;
1602                        } else if (state.detached_from) {
1603                                branch_name = state.detached_from;
1604                                if (state.detached_at)
1605                                        on_what = _("HEAD detached at ");
1606                                else
1607                                        on_what = _("HEAD detached from ");
1608                        } else {
1609                                branch_name = "";
1610                                on_what = _("Not currently on any branch.");
1611                        }
1612                } else
1613                        skip_prefix(branch_name, "refs/heads/", &branch_name);
1614                status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1615                status_printf_more(s, branch_status_color, "%s", on_what);
1616                status_printf_more(s, branch_color, "%s\n", branch_name);
1617                if (!s->is_initial)
1618                        wt_longstatus_print_tracking(s);
1619        }
1620
1621        wt_longstatus_print_state(s, &state);
1622        free(state.branch);
1623        free(state.onto);
1624        free(state.detached_from);
1625
1626        if (s->is_initial) {
1627                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1628                status_printf_ln(s, color(WT_STATUS_HEADER, s),
1629                                 s->commit_template
1630                                 ? _("Initial commit")
1631                                 : _("No commits yet"));
1632                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1633        }
1634
1635        wt_longstatus_print_updated(s);
1636        wt_longstatus_print_unmerged(s);
1637        wt_longstatus_print_changed(s);
1638        if (s->submodule_summary &&
1639            (!s->ignore_submodule_arg ||
1640             strcmp(s->ignore_submodule_arg, "all"))) {
1641                wt_longstatus_print_submodule_summary(s, 0);  /* staged */
1642                wt_longstatus_print_submodule_summary(s, 1);  /* unstaged */
1643        }
1644        if (s->show_untracked_files) {
1645                wt_longstatus_print_other(s, &s->untracked, _("Untracked files"), "add");
1646                if (s->show_ignored_mode)
1647                        wt_longstatus_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1648                if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1649                        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1650                        status_printf_ln(s, GIT_COLOR_NORMAL,
1651                                         _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1652                                           "may speed it up, but you have to be careful not to forget to add\n"
1653                                           "new files yourself (see 'git help status')."),
1654                                         s->untracked_in_ms / 1000.0);
1655                }
1656        } else if (s->commitable)
1657                status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1658                        s->hints
1659                        ? _(" (use -u option to show untracked files)") : "");
1660
1661        if (s->verbose)
1662                wt_longstatus_print_verbose(s);
1663        if (!s->commitable) {
1664                if (s->amend)
1665                        status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1666                else if (s->nowarn)
1667                        ; /* nothing */
1668                else if (s->workdir_dirty) {
1669                        if (s->hints)
1670                                printf(_("no changes added to commit "
1671                                         "(use \"git add\" and/or \"git commit -a\")\n"));
1672                        else
1673                                printf(_("no changes added to commit\n"));
1674                } else if (s->untracked.nr) {
1675                        if (s->hints)
1676                                printf(_("nothing added to commit but untracked files "
1677                                         "present (use \"git add\" to track)\n"));
1678                        else
1679                                printf(_("nothing added to commit but untracked files present\n"));
1680                } else if (s->is_initial) {
1681                        if (s->hints)
1682                                printf(_("nothing to commit (create/copy files "
1683                                         "and use \"git add\" to track)\n"));
1684                        else
1685                                printf(_("nothing to commit\n"));
1686                } else if (!s->show_untracked_files) {
1687                        if (s->hints)
1688                                printf(_("nothing to commit (use -u to show untracked files)\n"));
1689                        else
1690                                printf(_("nothing to commit\n"));
1691                } else
1692                        printf(_("nothing to commit, working tree clean\n"));
1693        }
1694        if(s->show_stash)
1695                wt_longstatus_print_stash_summary(s);
1696}
1697
1698static void wt_shortstatus_unmerged(struct string_list_item *it,
1699                           struct wt_status *s)
1700{
1701        struct wt_status_change_data *d = it->util;
1702        const char *how = "??";
1703
1704        switch (d->stagemask) {
1705        case 1: how = "DD"; break; /* both deleted */
1706        case 2: how = "AU"; break; /* added by us */
1707        case 3: how = "UD"; break; /* deleted by them */
1708        case 4: how = "UA"; break; /* added by them */
1709        case 5: how = "DU"; break; /* deleted by us */
1710        case 6: how = "AA"; break; /* both added */
1711        case 7: how = "UU"; break; /* both modified */
1712        }
1713        color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1714        if (s->null_termination) {
1715                fprintf(stdout, " %s%c", it->string, 0);
1716        } else {
1717                struct strbuf onebuf = STRBUF_INIT;
1718                const char *one;
1719                one = quote_path(it->string, s->prefix, &onebuf);
1720                printf(" %s\n", one);
1721                strbuf_release(&onebuf);
1722        }
1723}
1724
1725static void wt_shortstatus_status(struct string_list_item *it,
1726                         struct wt_status *s)
1727{
1728        struct wt_status_change_data *d = it->util;
1729
1730        if (d->index_status)
1731                color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1732        else
1733                putchar(' ');
1734        if (d->worktree_status)
1735                color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1736        else
1737                putchar(' ');
1738        putchar(' ');
1739        if (s->null_termination) {
1740                fprintf(stdout, "%s%c", it->string, 0);
1741                if (d->rename_source)
1742                        fprintf(stdout, "%s%c", d->rename_source, 0);
1743        } else {
1744                struct strbuf onebuf = STRBUF_INIT;
1745                const char *one;
1746
1747                if (d->rename_source) {
1748                        one = quote_path(d->rename_source, s->prefix, &onebuf);
1749                        if (*one != '"' && strchr(one, ' ') != NULL) {
1750                                putchar('"');
1751                                strbuf_addch(&onebuf, '"');
1752                                one = onebuf.buf;
1753                        }
1754                        printf("%s -> ", one);
1755                        strbuf_release(&onebuf);
1756                }
1757                one = quote_path(it->string, s->prefix, &onebuf);
1758                if (*one != '"' && strchr(one, ' ') != NULL) {
1759                        putchar('"');
1760                        strbuf_addch(&onebuf, '"');
1761                        one = onebuf.buf;
1762                }
1763                printf("%s\n", one);
1764                strbuf_release(&onebuf);
1765        }
1766}
1767
1768static void wt_shortstatus_other(struct string_list_item *it,
1769                                 struct wt_status *s, const char *sign)
1770{
1771        if (s->null_termination) {
1772                fprintf(stdout, "%s %s%c", sign, it->string, 0);
1773        } else {
1774                struct strbuf onebuf = STRBUF_INIT;
1775                const char *one;
1776                one = quote_path(it->string, s->prefix, &onebuf);
1777                color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1778                printf(" %s\n", one);
1779                strbuf_release(&onebuf);
1780        }
1781}
1782
1783static void wt_shortstatus_print_tracking(struct wt_status *s)
1784{
1785        struct branch *branch;
1786        const char *header_color = color(WT_STATUS_HEADER, s);
1787        const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1788        const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1789
1790        const char *base;
1791        char *short_base;
1792        const char *branch_name;
1793        int num_ours, num_theirs, sti;
1794        int upstream_is_gone = 0;
1795
1796        color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1797
1798        if (!s->branch)
1799                return;
1800        branch_name = s->branch;
1801
1802#define LABEL(string) (s->no_gettext ? (string) : _(string))
1803
1804        if (s->is_initial)
1805                color_fprintf(s->fp, header_color, LABEL(N_("No commits yet on ")));
1806
1807        if (!strcmp(s->branch, "HEAD")) {
1808                color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1809                              LABEL(N_("HEAD (no branch)")));
1810                goto conclude;
1811        }
1812
1813        skip_prefix(branch_name, "refs/heads/", &branch_name);
1814
1815        branch = branch_get(branch_name);
1816
1817        color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1818
1819        sti = stat_tracking_info(branch, &num_ours, &num_theirs, &base,
1820                                 s->ahead_behind_flags);
1821        if (sti < 0) {
1822                if (!base)
1823                        goto conclude;
1824
1825                upstream_is_gone = 1;
1826        }
1827
1828        short_base = shorten_unambiguous_ref(base, 0);
1829        color_fprintf(s->fp, header_color, "...");
1830        color_fprintf(s->fp, branch_color_remote, "%s", short_base);
1831        free(short_base);
1832
1833        if (!upstream_is_gone && !sti)
1834                goto conclude;
1835
1836        color_fprintf(s->fp, header_color, " [");
1837        if (upstream_is_gone) {
1838                color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1839        } else if (s->ahead_behind_flags == AHEAD_BEHIND_QUICK) {
1840                color_fprintf(s->fp, header_color, LABEL(N_("different")));
1841        } else if (!num_ours) {
1842                color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1843                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1844        } else if (!num_theirs) {
1845                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1846                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1847        } else {
1848                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1849                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1850                color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1851                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1852        }
1853
1854        color_fprintf(s->fp, header_color, "]");
1855 conclude:
1856        fputc(s->null_termination ? '\0' : '\n', s->fp);
1857}
1858
1859static void wt_shortstatus_print(struct wt_status *s)
1860{
1861        struct string_list_item *it;
1862
1863        if (s->show_branch)
1864                wt_shortstatus_print_tracking(s);
1865
1866        for_each_string_list_item(it, &s->change) {
1867                struct wt_status_change_data *d = it->util;
1868
1869                if (d->stagemask)
1870                        wt_shortstatus_unmerged(it, s);
1871                else
1872                        wt_shortstatus_status(it, s);
1873        }
1874        for_each_string_list_item(it, &s->untracked)
1875                wt_shortstatus_other(it, s, "??");
1876
1877        for_each_string_list_item(it, &s->ignored)
1878                wt_shortstatus_other(it, s, "!!");
1879}
1880
1881static void wt_porcelain_print(struct wt_status *s)
1882{
1883        s->use_color = 0;
1884        s->relative_paths = 0;
1885        s->prefix = NULL;
1886        s->no_gettext = 1;
1887        wt_shortstatus_print(s);
1888}
1889
1890/*
1891 * Print branch information for porcelain v2 output.  These lines
1892 * are printed when the '--branch' parameter is given.
1893 *
1894 *    # branch.oid <commit><eol>
1895 *    # branch.head <head><eol>
1896 *   [# branch.upstream <upstream><eol>
1897 *   [# branch.ab +<ahead> -<behind><eol>]]
1898 *
1899 *      <commit> ::= the current commit hash or the the literal
1900 *                   "(initial)" to indicate an initialized repo
1901 *                   with no commits.
1902 *
1903 *        <head> ::= <branch_name> the current branch name or
1904 *                   "(detached)" literal when detached head or
1905 *                   "(unknown)" when something is wrong.
1906 *
1907 *    <upstream> ::= the upstream branch name, when set.
1908 *
1909 *       <ahead> ::= integer ahead value or '?'.
1910 *
1911 *      <behind> ::= integer behind value or '?'.
1912 *
1913 * The end-of-line is defined by the -z flag.
1914 *
1915 *                 <eol> ::= NUL when -z,
1916 *                           LF when NOT -z.
1917 *
1918 * When an upstream is set and present, the 'branch.ab' line will
1919 * be printed with the ahead/behind counts for the branch and the
1920 * upstream.  When AHEAD_BEHIND_QUICK is requested and the branches
1921 * are different, '?' will be substituted for the actual count.
1922 */
1923static void wt_porcelain_v2_print_tracking(struct wt_status *s)
1924{
1925        struct branch *branch;
1926        const char *base;
1927        const char *branch_name;
1928        struct wt_status_state state;
1929        int ab_info, nr_ahead, nr_behind;
1930        char eol = s->null_termination ? '\0' : '\n';
1931
1932        memset(&state, 0, sizeof(state));
1933        wt_status_get_state(&state, s->branch && !strcmp(s->branch, "HEAD"));
1934
1935        fprintf(s->fp, "# branch.oid %s%c",
1936                        (s->is_initial ? "(initial)" : sha1_to_hex(s->sha1_commit)),
1937                        eol);
1938
1939        if (!s->branch)
1940                fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
1941        else {
1942                if (!strcmp(s->branch, "HEAD")) {
1943                        fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
1944
1945                        if (state.rebase_in_progress || state.rebase_interactive_in_progress)
1946                                branch_name = state.onto;
1947                        else if (state.detached_from)
1948                                branch_name = state.detached_from;
1949                        else
1950                                branch_name = "";
1951                } else {
1952                        branch_name = NULL;
1953                        skip_prefix(s->branch, "refs/heads/", &branch_name);
1954
1955                        fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
1956                }
1957
1958                /* Lookup stats on the upstream tracking branch, if set. */
1959                branch = branch_get(branch_name);
1960                base = NULL;
1961                ab_info = stat_tracking_info(branch, &nr_ahead, &nr_behind,
1962                                             &base, s->ahead_behind_flags);
1963                if (base) {
1964                        base = shorten_unambiguous_ref(base, 0);
1965                        fprintf(s->fp, "# branch.upstream %s%c", base, eol);
1966                        free((char *)base);
1967
1968                        if (ab_info > 0) {
1969                                /* different */
1970                                if (nr_ahead || nr_behind)
1971                                        fprintf(s->fp, "# branch.ab +%d -%d%c",
1972                                                nr_ahead, nr_behind, eol);
1973                                else
1974                                        fprintf(s->fp, "# branch.ab +? -?%c",
1975                                                eol);
1976                        } else if (!ab_info) {
1977                                /* same */
1978                                fprintf(s->fp, "# branch.ab +0 -0%c", eol);
1979                        }
1980                }
1981        }
1982
1983        free(state.branch);
1984        free(state.onto);
1985        free(state.detached_from);
1986}
1987
1988/*
1989 * Convert various submodule status values into a
1990 * fixed-length string of characters in the buffer provided.
1991 */
1992static void wt_porcelain_v2_submodule_state(
1993        struct wt_status_change_data *d,
1994        char sub[5])
1995{
1996        if (S_ISGITLINK(d->mode_head) ||
1997                S_ISGITLINK(d->mode_index) ||
1998                S_ISGITLINK(d->mode_worktree)) {
1999                sub[0] = 'S';
2000                sub[1] = d->new_submodule_commits ? 'C' : '.';
2001                sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
2002                sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
2003        } else {
2004                sub[0] = 'N';
2005                sub[1] = '.';
2006                sub[2] = '.';
2007                sub[3] = '.';
2008        }
2009        sub[4] = 0;
2010}
2011
2012/*
2013 * Fix-up changed entries before we print them.
2014 */
2015static void wt_porcelain_v2_fix_up_changed(
2016        struct string_list_item *it,
2017        struct wt_status *s)
2018{
2019        struct wt_status_change_data *d = it->util;
2020
2021        if (!d->index_status) {
2022                /*
2023                 * This entry is unchanged in the index (relative to the head).
2024                 * Therefore, the collect_updated_cb was never called for this
2025                 * entry (during the head-vs-index scan) and so the head column
2026                 * fields were never set.
2027                 *
2028                 * We must have data for the index column (from the
2029                 * index-vs-worktree scan (otherwise, this entry should not be
2030                 * in the list of changes)).
2031                 *
2032                 * Copy index column fields to the head column, so that our
2033                 * output looks complete.
2034                 */
2035                assert(d->mode_head == 0);
2036                d->mode_head = d->mode_index;
2037                oidcpy(&d->oid_head, &d->oid_index);
2038        }
2039
2040        if (!d->worktree_status) {
2041                /*
2042                 * This entry is unchanged in the worktree (relative to the index).
2043                 * Therefore, the collect_changed_cb was never called for this entry
2044                 * (during the index-vs-worktree scan) and so the worktree column
2045                 * fields were never set.
2046                 *
2047                 * We must have data for the index column (from the head-vs-index
2048                 * scan).
2049                 *
2050                 * Copy the index column fields to the worktree column so that
2051                 * our output looks complete.
2052                 *
2053                 * Note that we only have a mode field in the worktree column
2054                 * because the scan code tries really hard to not have to compute it.
2055                 */
2056                assert(d->mode_worktree == 0);
2057                d->mode_worktree = d->mode_index;
2058        }
2059}
2060
2061/*
2062 * Print porcelain v2 info for tracked entries with changes.
2063 */
2064static void wt_porcelain_v2_print_changed_entry(
2065        struct string_list_item *it,
2066        struct wt_status *s)
2067{
2068        struct wt_status_change_data *d = it->util;
2069        struct strbuf buf = STRBUF_INIT;
2070        struct strbuf buf_from = STRBUF_INIT;
2071        const char *path = NULL;
2072        const char *path_from = NULL;
2073        char key[3];
2074        char submodule_token[5];
2075        char sep_char, eol_char;
2076
2077        wt_porcelain_v2_fix_up_changed(it, s);
2078        wt_porcelain_v2_submodule_state(d, submodule_token);
2079
2080        key[0] = d->index_status ? d->index_status : '.';
2081        key[1] = d->worktree_status ? d->worktree_status : '.';
2082        key[2] = 0;
2083
2084        if (s->null_termination) {
2085                /*
2086                 * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
2087                 * A single NUL character separates them.
2088                 */
2089                sep_char = '\0';
2090                eol_char = '\0';
2091                path = it->string;
2092                path_from = d->rename_source;
2093        } else {
2094                /*
2095                 * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
2096                 * The source path is only present when necessary.
2097                 * A single TAB separates them (because paths can contain spaces
2098                 * which are not escaped and C-quoting does escape TAB characters).
2099                 */
2100                sep_char = '\t';
2101                eol_char = '\n';
2102                path = quote_path(it->string, s->prefix, &buf);
2103                if (d->rename_source)
2104                        path_from = quote_path(d->rename_source, s->prefix, &buf_from);
2105        }
2106
2107        if (path_from)
2108                fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
2109                                key, submodule_token,
2110                                d->mode_head, d->mode_index, d->mode_worktree,
2111                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2112                                d->rename_status, d->rename_score,
2113                                path, sep_char, path_from, eol_char);
2114        else
2115                fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
2116                                key, submodule_token,
2117                                d->mode_head, d->mode_index, d->mode_worktree,
2118                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2119                                path, eol_char);
2120
2121        strbuf_release(&buf);
2122        strbuf_release(&buf_from);
2123}
2124
2125/*
2126 * Print porcelain v2 status info for unmerged entries.
2127 */
2128static void wt_porcelain_v2_print_unmerged_entry(
2129        struct string_list_item *it,
2130        struct wt_status *s)
2131{
2132        struct wt_status_change_data *d = it->util;
2133        const struct cache_entry *ce;
2134        struct strbuf buf_index = STRBUF_INIT;
2135        const char *path_index = NULL;
2136        int pos, stage, sum;
2137        struct {
2138                int mode;
2139                struct object_id oid;
2140        } stages[3];
2141        char *key;
2142        char submodule_token[5];
2143        char unmerged_prefix = 'u';
2144        char eol_char = s->null_termination ? '\0' : '\n';
2145
2146        wt_porcelain_v2_submodule_state(d, submodule_token);
2147
2148        switch (d->stagemask) {
2149        case 1: key = "DD"; break; /* both deleted */
2150        case 2: key = "AU"; break; /* added by us */
2151        case 3: key = "UD"; break; /* deleted by them */
2152        case 4: key = "UA"; break; /* added by them */
2153        case 5: key = "DU"; break; /* deleted by us */
2154        case 6: key = "AA"; break; /* both added */
2155        case 7: key = "UU"; break; /* both modified */
2156        default:
2157                die("BUG: unhandled unmerged status %x", d->stagemask);
2158        }
2159
2160        /*
2161         * Disregard d.aux.porcelain_v2 data that we accumulated
2162         * for the head and index columns during the scans and
2163         * replace with the actual stage data.
2164         *
2165         * Note that this is a last-one-wins for each the individual
2166         * stage [123] columns in the event of multiple cache entries
2167         * for same stage.
2168         */
2169        memset(stages, 0, sizeof(stages));
2170        sum = 0;
2171        pos = cache_name_pos(it->string, strlen(it->string));
2172        assert(pos < 0);
2173        pos = -pos-1;
2174        while (pos < active_nr) {
2175                ce = active_cache[pos++];
2176                stage = ce_stage(ce);
2177                if (strcmp(ce->name, it->string) || !stage)
2178                        break;
2179                stages[stage - 1].mode = ce->ce_mode;
2180                oidcpy(&stages[stage - 1].oid, &ce->oid);
2181                sum |= (1 << (stage - 1));
2182        }
2183        if (sum != d->stagemask)
2184                die("BUG: observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
2185
2186        if (s->null_termination)
2187                path_index = it->string;
2188        else
2189                path_index = quote_path(it->string, s->prefix, &buf_index);
2190
2191        fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
2192                        unmerged_prefix, key, submodule_token,
2193                        stages[0].mode, /* stage 1 */
2194                        stages[1].mode, /* stage 2 */
2195                        stages[2].mode, /* stage 3 */
2196                        d->mode_worktree,
2197                        oid_to_hex(&stages[0].oid), /* stage 1 */
2198                        oid_to_hex(&stages[1].oid), /* stage 2 */
2199                        oid_to_hex(&stages[2].oid), /* stage 3 */
2200                        path_index,
2201                        eol_char);
2202
2203        strbuf_release(&buf_index);
2204}
2205
2206/*
2207 * Print porcelain V2 status info for untracked and ignored entries.
2208 */
2209static void wt_porcelain_v2_print_other(
2210        struct string_list_item *it,
2211        struct wt_status *s,
2212        char prefix)
2213{
2214        struct strbuf buf = STRBUF_INIT;
2215        const char *path;
2216        char eol_char;
2217
2218        if (s->null_termination) {
2219                path = it->string;
2220                eol_char = '\0';
2221        } else {
2222                path = quote_path(it->string, s->prefix, &buf);
2223                eol_char = '\n';
2224        }
2225
2226        fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
2227
2228        strbuf_release(&buf);
2229}
2230
2231/*
2232 * Print porcelain V2 status.
2233 *
2234 * [<v2_branch>]
2235 * [<v2_changed_items>]*
2236 * [<v2_unmerged_items>]*
2237 * [<v2_untracked_items>]*
2238 * [<v2_ignored_items>]*
2239 *
2240 */
2241static void wt_porcelain_v2_print(struct wt_status *s)
2242{
2243        struct wt_status_change_data *d;
2244        struct string_list_item *it;
2245        int i;
2246
2247        if (s->show_branch)
2248                wt_porcelain_v2_print_tracking(s);
2249
2250        for (i = 0; i < s->change.nr; i++) {
2251                it = &(s->change.items[i]);
2252                d = it->util;
2253                if (!d->stagemask)
2254                        wt_porcelain_v2_print_changed_entry(it, s);
2255        }
2256
2257        for (i = 0; i < s->change.nr; i++) {
2258                it = &(s->change.items[i]);
2259                d = it->util;
2260                if (d->stagemask)
2261                        wt_porcelain_v2_print_unmerged_entry(it, s);
2262        }
2263
2264        for (i = 0; i < s->untracked.nr; i++) {
2265                it = &(s->untracked.items[i]);
2266                wt_porcelain_v2_print_other(it, s, '?');
2267        }
2268
2269        for (i = 0; i < s->ignored.nr; i++) {
2270                it = &(s->ignored.items[i]);
2271                wt_porcelain_v2_print_other(it, s, '!');
2272        }
2273}
2274
2275void wt_status_print(struct wt_status *s)
2276{
2277        switch (s->status_format) {
2278        case STATUS_FORMAT_SHORT:
2279                wt_shortstatus_print(s);
2280                break;
2281        case STATUS_FORMAT_PORCELAIN:
2282                wt_porcelain_print(s);
2283                break;
2284        case STATUS_FORMAT_PORCELAIN_V2:
2285                wt_porcelain_v2_print(s);
2286                break;
2287        case STATUS_FORMAT_UNSPECIFIED:
2288                die("BUG: finalize_deferred_config() should have been called");
2289                break;
2290        case STATUS_FORMAT_NONE:
2291        case STATUS_FORMAT_LONG:
2292                wt_longstatus_print(s);
2293                break;
2294        }
2295}
2296
2297/**
2298 * Returns 1 if there are unstaged changes, 0 otherwise.
2299 */
2300int has_unstaged_changes(int ignore_submodules)
2301{
2302        struct rev_info rev_info;
2303        int result;
2304
2305        init_revisions(&rev_info, NULL);
2306        if (ignore_submodules) {
2307                rev_info.diffopt.flags.ignore_submodules = 1;
2308                rev_info.diffopt.flags.override_submodule_config = 1;
2309        }
2310        rev_info.diffopt.flags.quick = 1;
2311        diff_setup_done(&rev_info.diffopt);
2312        result = run_diff_files(&rev_info, 0);
2313        return diff_result_code(&rev_info.diffopt, result);
2314}
2315
2316/**
2317 * Returns 1 if there are uncommitted changes, 0 otherwise.
2318 */
2319int has_uncommitted_changes(int ignore_submodules)
2320{
2321        struct rev_info rev_info;
2322        int result;
2323
2324        if (is_cache_unborn())
2325                return 0;
2326
2327        init_revisions(&rev_info, NULL);
2328        if (ignore_submodules)
2329                rev_info.diffopt.flags.ignore_submodules = 1;
2330        rev_info.diffopt.flags.quick = 1;
2331        add_head_to_pending(&rev_info);
2332        diff_setup_done(&rev_info.diffopt);
2333        result = run_diff_index(&rev_info, 1);
2334        return diff_result_code(&rev_info.diffopt, result);
2335}
2336
2337/**
2338 * If the work tree has unstaged or uncommitted changes, dies with the
2339 * appropriate message.
2340 */
2341int require_clean_work_tree(const char *action, const char *hint, int ignore_submodules, int gently)
2342{
2343        struct lock_file lock_file = LOCK_INIT;
2344        int err = 0, fd;
2345
2346        fd = hold_locked_index(&lock_file, 0);
2347        refresh_cache(REFRESH_QUIET);
2348        if (0 <= fd)
2349                update_index_if_able(&the_index, &lock_file);
2350        rollback_lock_file(&lock_file);
2351
2352        if (has_unstaged_changes(ignore_submodules)) {
2353                /* TRANSLATORS: the action is e.g. "pull with rebase" */
2354                error(_("cannot %s: You have unstaged changes."), _(action));
2355                err = 1;
2356        }
2357
2358        if (has_uncommitted_changes(ignore_submodules)) {
2359                if (err)
2360                        error(_("additionally, your index contains uncommitted changes."));
2361                else
2362                        error(_("cannot %s: Your index contains uncommitted changes."),
2363                              _(action));
2364                err = 1;
2365        }
2366
2367        if (err) {
2368                if (hint)
2369                        error("%s", hint);
2370                if (!gently)
2371                        exit(128);
2372        }
2373
2374        return err;
2375}