02fda45f05c5d5030da0534e92c3f22dec63ec61
   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        struct object_id oid;
 125
 126        memset(s, 0, sizeof(*s));
 127        memcpy(s->color_palette, default_wt_status_colors,
 128               sizeof(default_wt_status_colors));
 129        s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 130        s->use_color = -1;
 131        s->relative_paths = 1;
 132        s->branch = resolve_refdup("HEAD", 0, oid.hash, NULL);
 133        s->reference = "HEAD";
 134        s->fp = stdout;
 135        s->index_file = get_index_file();
 136        s->change.strdup_strings = 1;
 137        s->untracked.strdup_strings = 1;
 138        s->ignored.strdup_strings = 1;
 139        s->show_branch = -1;  /* 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                if (d->rename_source)
 365                        one_name = d->rename_source;
 366                break;
 367        case WT_STATUS_CHANGED:
 368                if (d->new_submodule_commits || d->dirty_submodule) {
 369                        strbuf_addstr(&extra, " (");
 370                        if (d->new_submodule_commits)
 371                                strbuf_addstr(&extra, _("new commits, "));
 372                        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 373                                strbuf_addstr(&extra, _("modified content, "));
 374                        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 375                                strbuf_addstr(&extra, _("untracked content, "));
 376                        strbuf_setlen(&extra, extra.len - 2);
 377                        strbuf_addch(&extra, ')');
 378                }
 379                status = d->worktree_status;
 380                break;
 381        default:
 382                die("BUG: unhandled change_type %d in wt_longstatus_print_change_data",
 383                    change_type);
 384        }
 385
 386        one = quote_path(one_name, s->prefix, &onebuf);
 387        two = quote_path(two_name, s->prefix, &twobuf);
 388
 389        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 390        what = wt_status_diff_status_string(status);
 391        if (!what)
 392                die("BUG: unhandled diff status %c", status);
 393        len = label_width - utf8_strwidth(what);
 394        assert(len >= 0);
 395        if (one_name != two_name)
 396                status_printf_more(s, c, "%s%.*s%s -> %s",
 397                                   what, len, padding, one, two);
 398        else
 399                status_printf_more(s, c, "%s%.*s%s",
 400                                   what, len, padding, one);
 401        if (extra.len) {
 402                status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 403                strbuf_release(&extra);
 404        }
 405        status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 406        strbuf_release(&onebuf);
 407        strbuf_release(&twobuf);
 408}
 409
 410static char short_submodule_status(struct wt_status_change_data *d)
 411{
 412        if (d->new_submodule_commits)
 413                return 'M';
 414        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 415                return 'm';
 416        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 417                return '?';
 418        return d->worktree_status;
 419}
 420
 421static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 422                                         struct diff_options *options,
 423                                         void *data)
 424{
 425        struct wt_status *s = data;
 426        int i;
 427
 428        if (!q->nr)
 429                return;
 430        s->workdir_dirty = 1;
 431        for (i = 0; i < q->nr; i++) {
 432                struct diff_filepair *p;
 433                struct string_list_item *it;
 434                struct wt_status_change_data *d;
 435
 436                p = q->queue[i];
 437                it = string_list_insert(&s->change, p->one->path);
 438                d = it->util;
 439                if (!d) {
 440                        d = xcalloc(1, sizeof(*d));
 441                        it->util = d;
 442                }
 443                if (!d->worktree_status)
 444                        d->worktree_status = p->status;
 445                if (S_ISGITLINK(p->two->mode)) {
 446                        d->dirty_submodule = p->two->dirty_submodule;
 447                        d->new_submodule_commits = !!oidcmp(&p->one->oid,
 448                                                            &p->two->oid);
 449                        if (s->status_format == STATUS_FORMAT_SHORT)
 450                                d->worktree_status = short_submodule_status(d);
 451                }
 452
 453                switch (p->status) {
 454                case DIFF_STATUS_ADDED:
 455                        d->mode_worktree = p->two->mode;
 456                        break;
 457
 458                case DIFF_STATUS_DELETED:
 459                        d->mode_index = p->one->mode;
 460                        oidcpy(&d->oid_index, &p->one->oid);
 461                        /* mode_worktree is zero for a delete. */
 462                        break;
 463
 464                case DIFF_STATUS_MODIFIED:
 465                case DIFF_STATUS_TYPE_CHANGED:
 466                case DIFF_STATUS_UNMERGED:
 467                        d->mode_index = p->one->mode;
 468                        d->mode_worktree = p->two->mode;
 469                        oidcpy(&d->oid_index, &p->one->oid);
 470                        break;
 471
 472                default:
 473                        die("BUG: unhandled diff-files status '%c'", p->status);
 474                        break;
 475                }
 476
 477        }
 478}
 479
 480static int unmerged_mask(const char *path)
 481{
 482        int pos, mask;
 483        const struct cache_entry *ce;
 484
 485        pos = cache_name_pos(path, strlen(path));
 486        if (0 <= pos)
 487                return 0;
 488
 489        mask = 0;
 490        pos = -pos-1;
 491        while (pos < active_nr) {
 492                ce = active_cache[pos++];
 493                if (strcmp(ce->name, path) || !ce_stage(ce))
 494                        break;
 495                mask |= (1 << (ce_stage(ce) - 1));
 496        }
 497        return mask;
 498}
 499
 500static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 501                                         struct diff_options *options,
 502                                         void *data)
 503{
 504        struct wt_status *s = data;
 505        int i;
 506
 507        for (i = 0; i < q->nr; i++) {
 508                struct diff_filepair *p;
 509                struct string_list_item *it;
 510                struct wt_status_change_data *d;
 511
 512                p = q->queue[i];
 513                it = string_list_insert(&s->change, p->two->path);
 514                d = it->util;
 515                if (!d) {
 516                        d = xcalloc(1, sizeof(*d));
 517                        it->util = d;
 518                }
 519                if (!d->index_status)
 520                        d->index_status = p->status;
 521                switch (p->status) {
 522                case DIFF_STATUS_ADDED:
 523                        /* Leave {mode,oid}_head zero for an add. */
 524                        d->mode_index = p->two->mode;
 525                        oidcpy(&d->oid_index, &p->two->oid);
 526                        break;
 527                case DIFF_STATUS_DELETED:
 528                        d->mode_head = p->one->mode;
 529                        oidcpy(&d->oid_head, &p->one->oid);
 530                        /* Leave {mode,oid}_index zero for a delete. */
 531                        break;
 532
 533                case DIFF_STATUS_COPIED:
 534                case DIFF_STATUS_RENAMED:
 535                        d->rename_source = xstrdup(p->one->path);
 536                        d->rename_score = p->score * 100 / MAX_SCORE;
 537                        d->rename_status = p->status;
 538                        /* fallthru */
 539                case DIFF_STATUS_MODIFIED:
 540                case DIFF_STATUS_TYPE_CHANGED:
 541                        d->mode_head = p->one->mode;
 542                        d->mode_index = p->two->mode;
 543                        oidcpy(&d->oid_head, &p->one->oid);
 544                        oidcpy(&d->oid_index, &p->two->oid);
 545                        break;
 546                case DIFF_STATUS_UNMERGED:
 547                        d->stagemask = unmerged_mask(p->two->path);
 548                        /*
 549                         * Don't bother setting {mode,oid}_{head,index} since the print
 550                         * code will output the stage values directly and not use the
 551                         * values in these fields.
 552                         */
 553                        break;
 554
 555                default:
 556                        die("BUG: unhandled diff-index status '%c'", p->status);
 557                        break;
 558                }
 559        }
 560}
 561
 562static void wt_status_collect_changes_worktree(struct wt_status *s)
 563{
 564        struct rev_info rev;
 565
 566        init_revisions(&rev, NULL);
 567        setup_revisions(0, NULL, &rev, NULL);
 568        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 569        DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
 570        rev.diffopt.ita_invisible_in_index = 1;
 571        if (!s->show_untracked_files)
 572                DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
 573        if (s->ignore_submodule_arg) {
 574                DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 575                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 576        }
 577        rev.diffopt.format_callback = wt_status_collect_changed_cb;
 578        rev.diffopt.format_callback_data = s;
 579        copy_pathspec(&rev.prune_data, &s->pathspec);
 580        run_diff_files(&rev, 0);
 581}
 582
 583static void wt_status_collect_changes_index(struct wt_status *s)
 584{
 585        struct rev_info rev;
 586        struct setup_revision_opt opt;
 587
 588        init_revisions(&rev, NULL);
 589        memset(&opt, 0, sizeof(opt));
 590        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 591        setup_revisions(0, NULL, &rev, &opt);
 592
 593        DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 594        rev.diffopt.ita_invisible_in_index = 1;
 595        if (s->ignore_submodule_arg) {
 596                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 597        } else {
 598                /*
 599                 * Unless the user did explicitly request a submodule ignore
 600                 * mode by passing a command line option we do not ignore any
 601                 * changed submodule SHA-1s when comparing index and HEAD, no
 602                 * matter what is configured. Otherwise the user won't be
 603                 * shown any submodules she manually added (and which are
 604                 * staged to be committed), which would be really confusing.
 605                 */
 606                handle_ignore_submodules_arg(&rev.diffopt, "dirty");
 607        }
 608
 609        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 610        rev.diffopt.format_callback = wt_status_collect_updated_cb;
 611        rev.diffopt.format_callback_data = s;
 612        rev.diffopt.detect_rename = DIFF_DETECT_RENAME;
 613        rev.diffopt.rename_limit = 200;
 614        rev.diffopt.break_opt = 0;
 615        copy_pathspec(&rev.prune_data, &s->pathspec);
 616        run_diff_index(&rev, 1);
 617}
 618
 619static void wt_status_collect_changes_initial(struct wt_status *s)
 620{
 621        int i;
 622
 623        for (i = 0; i < active_nr; i++) {
 624                struct string_list_item *it;
 625                struct wt_status_change_data *d;
 626                const struct cache_entry *ce = active_cache[i];
 627
 628                if (!ce_path_match(ce, &s->pathspec, NULL))
 629                        continue;
 630                if (ce_intent_to_add(ce))
 631                        continue;
 632                it = string_list_insert(&s->change, ce->name);
 633                d = it->util;
 634                if (!d) {
 635                        d = xcalloc(1, sizeof(*d));
 636                        it->util = d;
 637                }
 638                if (ce_stage(ce)) {
 639                        d->index_status = DIFF_STATUS_UNMERGED;
 640                        d->stagemask |= (1 << (ce_stage(ce) - 1));
 641                        /*
 642                         * Don't bother setting {mode,oid}_{head,index} since the print
 643                         * code will output the stage values directly and not use the
 644                         * values in these fields.
 645                         */
 646                } else {
 647                        d->index_status = DIFF_STATUS_ADDED;
 648                        /* Leave {mode,oid}_head zero for adds. */
 649                        d->mode_index = ce->ce_mode;
 650                        oidcpy(&d->oid_index, &ce->oid);
 651                }
 652        }
 653}
 654
 655static void wt_status_collect_untracked(struct wt_status *s)
 656{
 657        int i;
 658        struct dir_struct dir;
 659        uint64_t t_begin = getnanotime();
 660
 661        if (!s->show_untracked_files)
 662                return;
 663
 664        memset(&dir, 0, sizeof(dir));
 665        if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 666                dir.flags |=
 667                        DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 668        if (s->show_ignored_files)
 669                dir.flags |= DIR_SHOW_IGNORED_TOO;
 670        else
 671                dir.untracked = the_index.untracked;
 672        setup_standard_excludes(&dir);
 673
 674        fill_directory(&dir, &s->pathspec);
 675
 676        for (i = 0; i < dir.nr; i++) {
 677                struct dir_entry *ent = dir.entries[i];
 678                if (cache_name_is_other(ent->name, ent->len) &&
 679                    dir_path_match(ent, &s->pathspec, 0, NULL))
 680                        string_list_insert(&s->untracked, ent->name);
 681                free(ent);
 682        }
 683
 684        for (i = 0; i < dir.ignored_nr; i++) {
 685                struct dir_entry *ent = dir.ignored[i];
 686                if (cache_name_is_other(ent->name, ent->len) &&
 687                    dir_path_match(ent, &s->pathspec, 0, NULL))
 688                        string_list_insert(&s->ignored, ent->name);
 689                free(ent);
 690        }
 691
 692        free(dir.entries);
 693        free(dir.ignored);
 694        clear_directory(&dir);
 695
 696        if (advice_status_u_option)
 697                s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 698}
 699
 700void wt_status_collect(struct wt_status *s)
 701{
 702        wt_status_collect_changes_worktree(s);
 703
 704        if (s->is_initial)
 705                wt_status_collect_changes_initial(s);
 706        else
 707                wt_status_collect_changes_index(s);
 708        wt_status_collect_untracked(s);
 709}
 710
 711static void wt_longstatus_print_unmerged(struct wt_status *s)
 712{
 713        int shown_header = 0;
 714        int i;
 715
 716        for (i = 0; i < s->change.nr; i++) {
 717                struct wt_status_change_data *d;
 718                struct string_list_item *it;
 719                it = &(s->change.items[i]);
 720                d = it->util;
 721                if (!d->stagemask)
 722                        continue;
 723                if (!shown_header) {
 724                        wt_longstatus_print_unmerged_header(s);
 725                        shown_header = 1;
 726                }
 727                wt_longstatus_print_unmerged_data(s, it);
 728        }
 729        if (shown_header)
 730                wt_longstatus_print_trailer(s);
 731
 732}
 733
 734static void wt_longstatus_print_updated(struct wt_status *s)
 735{
 736        int shown_header = 0;
 737        int i;
 738
 739        for (i = 0; i < s->change.nr; i++) {
 740                struct wt_status_change_data *d;
 741                struct string_list_item *it;
 742                it = &(s->change.items[i]);
 743                d = it->util;
 744                if (!d->index_status ||
 745                    d->index_status == DIFF_STATUS_UNMERGED)
 746                        continue;
 747                if (!shown_header) {
 748                        wt_longstatus_print_cached_header(s);
 749                        s->commitable = 1;
 750                        shown_header = 1;
 751                }
 752                wt_longstatus_print_change_data(s, WT_STATUS_UPDATED, it);
 753        }
 754        if (shown_header)
 755                wt_longstatus_print_trailer(s);
 756}
 757
 758/*
 759 * -1 : has delete
 760 *  0 : no change
 761 *  1 : some change but no delete
 762 */
 763static int wt_status_check_worktree_changes(struct wt_status *s,
 764                                             int *dirty_submodules)
 765{
 766        int i;
 767        int changes = 0;
 768
 769        *dirty_submodules = 0;
 770
 771        for (i = 0; i < s->change.nr; i++) {
 772                struct wt_status_change_data *d;
 773                d = s->change.items[i].util;
 774                if (!d->worktree_status ||
 775                    d->worktree_status == DIFF_STATUS_UNMERGED)
 776                        continue;
 777                if (!changes)
 778                        changes = 1;
 779                if (d->dirty_submodule)
 780                        *dirty_submodules = 1;
 781                if (d->worktree_status == DIFF_STATUS_DELETED)
 782                        changes = -1;
 783        }
 784        return changes;
 785}
 786
 787static void wt_longstatus_print_changed(struct wt_status *s)
 788{
 789        int i, dirty_submodules;
 790        int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 791
 792        if (!worktree_changes)
 793                return;
 794
 795        wt_longstatus_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 796
 797        for (i = 0; i < s->change.nr; i++) {
 798                struct wt_status_change_data *d;
 799                struct string_list_item *it;
 800                it = &(s->change.items[i]);
 801                d = it->util;
 802                if (!d->worktree_status ||
 803                    d->worktree_status == DIFF_STATUS_UNMERGED)
 804                        continue;
 805                wt_longstatus_print_change_data(s, WT_STATUS_CHANGED, it);
 806        }
 807        wt_longstatus_print_trailer(s);
 808}
 809
 810static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncommitted)
 811{
 812        struct child_process sm_summary = CHILD_PROCESS_INIT;
 813        struct strbuf cmd_stdout = STRBUF_INIT;
 814        struct strbuf summary = STRBUF_INIT;
 815        char *summary_content;
 816
 817        argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 818                         s->index_file);
 819
 820        argv_array_push(&sm_summary.args, "submodule");
 821        argv_array_push(&sm_summary.args, "summary");
 822        argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 823        argv_array_push(&sm_summary.args, "--for-status");
 824        argv_array_push(&sm_summary.args, "--summary-limit");
 825        argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 826        if (!uncommitted)
 827                argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 828
 829        sm_summary.git_cmd = 1;
 830        sm_summary.no_stdin = 1;
 831
 832        capture_command(&sm_summary, &cmd_stdout, 1024);
 833
 834        /* prepend header, only if there's an actual output */
 835        if (cmd_stdout.len) {
 836                if (uncommitted)
 837                        strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 838                else
 839                        strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 840                strbuf_addstr(&summary, "\n\n");
 841        }
 842        strbuf_addbuf(&summary, &cmd_stdout);
 843        strbuf_release(&cmd_stdout);
 844
 845        if (s->display_comment_prefix) {
 846                size_t len;
 847                summary_content = strbuf_detach(&summary, &len);
 848                strbuf_add_commented_lines(&summary, summary_content, len);
 849                free(summary_content);
 850        }
 851
 852        fputs(summary.buf, s->fp);
 853        strbuf_release(&summary);
 854}
 855
 856static void wt_longstatus_print_other(struct wt_status *s,
 857                                      struct string_list *l,
 858                                      const char *what,
 859                                      const char *how)
 860{
 861        int i;
 862        struct strbuf buf = STRBUF_INIT;
 863        static struct string_list output = STRING_LIST_INIT_DUP;
 864        struct column_options copts;
 865
 866        if (!l->nr)
 867                return;
 868
 869        wt_longstatus_print_other_header(s, what, how);
 870
 871        for (i = 0; i < l->nr; i++) {
 872                struct string_list_item *it;
 873                const char *path;
 874                it = &(l->items[i]);
 875                path = quote_path(it->string, s->prefix, &buf);
 876                if (column_active(s->colopts)) {
 877                        string_list_append(&output, path);
 878                        continue;
 879                }
 880                status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 881                status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 882                                   "%s\n", path);
 883        }
 884
 885        strbuf_release(&buf);
 886        if (!column_active(s->colopts))
 887                goto conclude;
 888
 889        strbuf_addf(&buf, "%s%s\t%s",
 890                    color(WT_STATUS_HEADER, s),
 891                    s->display_comment_prefix ? "#" : "",
 892                    color(WT_STATUS_UNTRACKED, s));
 893        memset(&copts, 0, sizeof(copts));
 894        copts.padding = 1;
 895        copts.indent = buf.buf;
 896        if (want_color(s->use_color))
 897                copts.nl = GIT_COLOR_RESET "\n";
 898        print_columns(&output, s->colopts, &copts);
 899        string_list_clear(&output, 0);
 900        strbuf_release(&buf);
 901conclude:
 902        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 903}
 904
 905size_t wt_status_locate_end(const char *s, size_t len)
 906{
 907        const char *p;
 908        struct strbuf pattern = STRBUF_INIT;
 909
 910        strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
 911        if (starts_with(s, pattern.buf + 1))
 912                len = 0;
 913        else if ((p = strstr(s, pattern.buf)))
 914                len = p - s + 1;
 915        strbuf_release(&pattern);
 916        return len;
 917}
 918
 919void wt_status_add_cut_line(FILE *fp)
 920{
 921        const char *explanation = _("Do not touch the line above.\nEverything below will be removed.");
 922        struct strbuf buf = STRBUF_INIT;
 923
 924        fprintf(fp, "%c %s", comment_line_char, cut_line);
 925        strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
 926        fputs(buf.buf, fp);
 927        strbuf_release(&buf);
 928}
 929
 930static void wt_longstatus_print_verbose(struct wt_status *s)
 931{
 932        struct rev_info rev;
 933        struct setup_revision_opt opt;
 934        int dirty_submodules;
 935        const char *c = color(WT_STATUS_HEADER, s);
 936
 937        init_revisions(&rev, NULL);
 938        DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
 939        rev.diffopt.ita_invisible_in_index = 1;
 940
 941        memset(&opt, 0, sizeof(opt));
 942        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 943        setup_revisions(0, NULL, &rev, &opt);
 944
 945        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 946        rev.diffopt.detect_rename = DIFF_DETECT_RENAME;
 947        rev.diffopt.file = s->fp;
 948        rev.diffopt.close_file = 0;
 949        /*
 950         * If we're not going to stdout, then we definitely don't
 951         * want color, since we are going to the commit message
 952         * file (and even the "auto" setting won't work, since it
 953         * will have checked isatty on stdout). But we then do want
 954         * to insert the scissor line here to reliably remove the
 955         * diff before committing.
 956         */
 957        if (s->fp != stdout) {
 958                rev.diffopt.use_color = 0;
 959                wt_status_add_cut_line(s->fp);
 960        }
 961        if (s->verbose > 1 && s->commitable) {
 962                /* print_updated() printed a header, so do we */
 963                if (s->fp != stdout)
 964                        wt_longstatus_print_trailer(s);
 965                status_printf_ln(s, c, _("Changes to be committed:"));
 966                rev.diffopt.a_prefix = "c/";
 967                rev.diffopt.b_prefix = "i/";
 968        } /* else use prefix as per user config */
 969        run_diff_index(&rev, 1);
 970        if (s->verbose > 1 &&
 971            wt_status_check_worktree_changes(s, &dirty_submodules)) {
 972                status_printf_ln(s, c,
 973                        "--------------------------------------------------");
 974                status_printf_ln(s, c, _("Changes not staged for commit:"));
 975                setup_work_tree();
 976                rev.diffopt.a_prefix = "i/";
 977                rev.diffopt.b_prefix = "w/";
 978                run_diff_files(&rev, 0);
 979        }
 980}
 981
 982static void wt_longstatus_print_tracking(struct wt_status *s)
 983{
 984        struct strbuf sb = STRBUF_INIT;
 985        const char *cp, *ep, *branch_name;
 986        struct branch *branch;
 987        char comment_line_string[3];
 988        int i;
 989
 990        assert(s->branch && !s->is_initial);
 991        if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
 992                return;
 993        branch = branch_get(branch_name);
 994        if (!format_tracking_info(branch, &sb))
 995                return;
 996
 997        i = 0;
 998        if (s->display_comment_prefix) {
 999                comment_line_string[i++] = comment_line_char;
1000                comment_line_string[i++] = ' ';
1001        }
1002        comment_line_string[i] = '\0';
1003
1004        for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
1005                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
1006                                 "%s%.*s", comment_line_string,
1007                                 (int)(ep - cp), cp);
1008        if (s->display_comment_prefix)
1009                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
1010                                 comment_line_char);
1011        else
1012                fputs("", s->fp);
1013}
1014
1015static int has_unmerged(struct wt_status *s)
1016{
1017        int i;
1018
1019        for (i = 0; i < s->change.nr; i++) {
1020                struct wt_status_change_data *d;
1021                d = s->change.items[i].util;
1022                if (d->stagemask)
1023                        return 1;
1024        }
1025        return 0;
1026}
1027
1028static void show_merge_in_progress(struct wt_status *s,
1029                                struct wt_status_state *state,
1030                                const char *color)
1031{
1032        if (has_unmerged(s)) {
1033                status_printf_ln(s, color, _("You have unmerged paths."));
1034                if (s->hints) {
1035                        status_printf_ln(s, color,
1036                                         _("  (fix conflicts and run \"git commit\")"));
1037                        status_printf_ln(s, color,
1038                                         _("  (use \"git merge --abort\" to abort the merge)"));
1039                }
1040        } else {
1041                s-> commitable = 1;
1042                status_printf_ln(s, color,
1043                        _("All conflicts fixed but you are still merging."));
1044                if (s->hints)
1045                        status_printf_ln(s, color,
1046                                _("  (use \"git commit\" to conclude merge)"));
1047        }
1048        wt_longstatus_print_trailer(s);
1049}
1050
1051static void show_am_in_progress(struct wt_status *s,
1052                                struct wt_status_state *state,
1053                                const char *color)
1054{
1055        status_printf_ln(s, color,
1056                _("You are in the middle of an am session."));
1057        if (state->am_empty_patch)
1058                status_printf_ln(s, color,
1059                        _("The current patch is empty."));
1060        if (s->hints) {
1061                if (!state->am_empty_patch)
1062                        status_printf_ln(s, color,
1063                                _("  (fix conflicts and then run \"git am --continue\")"));
1064                status_printf_ln(s, color,
1065                        _("  (use \"git am --skip\" to skip this patch)"));
1066                status_printf_ln(s, color,
1067                        _("  (use \"git am --abort\" to restore the original branch)"));
1068        }
1069        wt_longstatus_print_trailer(s);
1070}
1071
1072static char *read_line_from_git_path(const char *filename)
1073{
1074        struct strbuf buf = STRBUF_INIT;
1075        FILE *fp = fopen(git_path("%s", filename), "r");
1076        if (!fp) {
1077                strbuf_release(&buf);
1078                return NULL;
1079        }
1080        strbuf_getline_lf(&buf, fp);
1081        if (!fclose(fp)) {
1082                return strbuf_detach(&buf, NULL);
1083        } else {
1084                strbuf_release(&buf);
1085                return NULL;
1086        }
1087}
1088
1089static int split_commit_in_progress(struct wt_status *s)
1090{
1091        int split_in_progress = 0;
1092        char *head, *orig_head, *rebase_amend, *rebase_orig_head;
1093
1094        if ((!s->amend && !s->nowarn && !s->workdir_dirty) ||
1095            !s->branch || strcmp(s->branch, "HEAD"))
1096                return 0;
1097
1098        head = read_line_from_git_path("HEAD");
1099        orig_head = read_line_from_git_path("ORIG_HEAD");
1100        rebase_amend = read_line_from_git_path("rebase-merge/amend");
1101        rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1102
1103        if (!head || !orig_head || !rebase_amend || !rebase_orig_head)
1104                ; /* fall through, no split in progress */
1105        else if (!strcmp(rebase_amend, rebase_orig_head))
1106                split_in_progress = !!strcmp(head, rebase_amend);
1107        else if (strcmp(orig_head, rebase_orig_head))
1108                split_in_progress = 1;
1109
1110        free(head);
1111        free(orig_head);
1112        free(rebase_amend);
1113        free(rebase_orig_head);
1114
1115        return split_in_progress;
1116}
1117
1118/*
1119 * Turn
1120 * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1121 * into
1122 * "pick d6a2f03 some message"
1123 *
1124 * The function assumes that the line does not contain useless spaces
1125 * before or after the command.
1126 */
1127static void abbrev_sha1_in_line(struct strbuf *line)
1128{
1129        struct strbuf **split;
1130        int i;
1131
1132        if (starts_with(line->buf, "exec ") ||
1133            starts_with(line->buf, "x "))
1134                return;
1135
1136        split = strbuf_split_max(line, ' ', 3);
1137        if (split[0] && split[1]) {
1138                struct object_id oid;
1139
1140                /*
1141                 * strbuf_split_max left a space. Trim it and re-add
1142                 * it after abbreviation.
1143                 */
1144                strbuf_trim(split[1]);
1145                if (!get_oid(split[1]->buf, &oid)) {
1146                        strbuf_reset(split[1]);
1147                        strbuf_add_unique_abbrev(split[1], oid.hash,
1148                                                 DEFAULT_ABBREV);
1149                        strbuf_addch(split[1], ' ');
1150                        strbuf_reset(line);
1151                        for (i = 0; split[i]; i++)
1152                                strbuf_addbuf(line, split[i]);
1153                }
1154        }
1155        strbuf_list_free(split);
1156}
1157
1158static int read_rebase_todolist(const char *fname, struct string_list *lines)
1159{
1160        struct strbuf line = STRBUF_INIT;
1161        FILE *f = fopen(git_path("%s", fname), "r");
1162
1163        if (!f) {
1164                if (errno == ENOENT)
1165                        return -1;
1166                die_errno("Could not open file %s for reading",
1167                          git_path("%s", fname));
1168        }
1169        while (!strbuf_getline_lf(&line, f)) {
1170                if (line.len && line.buf[0] == comment_line_char)
1171                        continue;
1172                strbuf_trim(&line);
1173                if (!line.len)
1174                        continue;
1175                abbrev_sha1_in_line(&line);
1176                string_list_append(lines, line.buf);
1177        }
1178        fclose(f);
1179        return 0;
1180}
1181
1182static void show_rebase_information(struct wt_status *s,
1183                                        struct wt_status_state *state,
1184                                        const char *color)
1185{
1186        if (state->rebase_interactive_in_progress) {
1187                int i;
1188                int nr_lines_to_show = 2;
1189
1190                struct string_list have_done = STRING_LIST_INIT_DUP;
1191                struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1192
1193                read_rebase_todolist("rebase-merge/done", &have_done);
1194                if (read_rebase_todolist("rebase-merge/git-rebase-todo",
1195                                         &yet_to_do))
1196                        status_printf_ln(s, color,
1197                                _("git-rebase-todo is missing."));
1198                if (have_done.nr == 0)
1199                        status_printf_ln(s, color, _("No commands done."));
1200                else {
1201                        status_printf_ln(s, color,
1202                                Q_("Last command done (%d command done):",
1203                                        "Last commands done (%d commands done):",
1204                                        have_done.nr),
1205                                have_done.nr);
1206                        for (i = (have_done.nr > nr_lines_to_show)
1207                                ? have_done.nr - nr_lines_to_show : 0;
1208                                i < have_done.nr;
1209                                i++)
1210                                status_printf_ln(s, color, "   %s", have_done.items[i].string);
1211                        if (have_done.nr > nr_lines_to_show && s->hints)
1212                                status_printf_ln(s, color,
1213                                        _("  (see more in file %s)"), git_path("rebase-merge/done"));
1214                }
1215
1216                if (yet_to_do.nr == 0)
1217                        status_printf_ln(s, color,
1218                                         _("No commands remaining."));
1219                else {
1220                        status_printf_ln(s, color,
1221                                Q_("Next command to do (%d remaining command):",
1222                                        "Next commands to do (%d remaining commands):",
1223                                        yet_to_do.nr),
1224                                yet_to_do.nr);
1225                        for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1226                                status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1227                        if (s->hints)
1228                                status_printf_ln(s, color,
1229                                        _("  (use \"git rebase --edit-todo\" to view and edit)"));
1230                }
1231                string_list_clear(&yet_to_do, 0);
1232                string_list_clear(&have_done, 0);
1233        }
1234}
1235
1236static void print_rebase_state(struct wt_status *s,
1237                                struct wt_status_state *state,
1238                                const char *color)
1239{
1240        if (state->branch)
1241                status_printf_ln(s, color,
1242                                 _("You are currently rebasing branch '%s' on '%s'."),
1243                                 state->branch,
1244                                 state->onto);
1245        else
1246                status_printf_ln(s, color,
1247                                 _("You are currently rebasing."));
1248}
1249
1250static void show_rebase_in_progress(struct wt_status *s,
1251                                struct wt_status_state *state,
1252                                const char *color)
1253{
1254        struct stat st;
1255
1256        show_rebase_information(s, state, color);
1257        if (has_unmerged(s)) {
1258                print_rebase_state(s, state, color);
1259                if (s->hints) {
1260                        status_printf_ln(s, color,
1261                                _("  (fix conflicts and then run \"git rebase --continue\")"));
1262                        status_printf_ln(s, color,
1263                                _("  (use \"git rebase --skip\" to skip this patch)"));
1264                        status_printf_ln(s, color,
1265                                _("  (use \"git rebase --abort\" to check out the original branch)"));
1266                }
1267        } else if (state->rebase_in_progress || !stat(git_path_merge_msg(), &st)) {
1268                print_rebase_state(s, state, color);
1269                if (s->hints)
1270                        status_printf_ln(s, color,
1271                                _("  (all conflicts fixed: run \"git rebase --continue\")"));
1272        } else if (split_commit_in_progress(s)) {
1273                if (state->branch)
1274                        status_printf_ln(s, color,
1275                                         _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1276                                         state->branch,
1277                                         state->onto);
1278                else
1279                        status_printf_ln(s, color,
1280                                         _("You are currently splitting a commit during a rebase."));
1281                if (s->hints)
1282                        status_printf_ln(s, color,
1283                                _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1284        } else {
1285                if (state->branch)
1286                        status_printf_ln(s, color,
1287                                         _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1288                                         state->branch,
1289                                         state->onto);
1290                else
1291                        status_printf_ln(s, color,
1292                                         _("You are currently editing a commit during a rebase."));
1293                if (s->hints && !s->amend) {
1294                        status_printf_ln(s, color,
1295                                _("  (use \"git commit --amend\" to amend the current commit)"));
1296                        status_printf_ln(s, color,
1297                                _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1298                }
1299        }
1300        wt_longstatus_print_trailer(s);
1301}
1302
1303static void show_cherry_pick_in_progress(struct wt_status *s,
1304                                        struct wt_status_state *state,
1305                                        const char *color)
1306{
1307        status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1308                        find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1309        if (s->hints) {
1310                if (has_unmerged(s))
1311                        status_printf_ln(s, color,
1312                                _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1313                else
1314                        status_printf_ln(s, color,
1315                                _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1316                status_printf_ln(s, color,
1317                        _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1318        }
1319        wt_longstatus_print_trailer(s);
1320}
1321
1322static void show_revert_in_progress(struct wt_status *s,
1323                                        struct wt_status_state *state,
1324                                        const char *color)
1325{
1326        status_printf_ln(s, color, _("You are currently reverting commit %s."),
1327                         find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1328        if (s->hints) {
1329                if (has_unmerged(s))
1330                        status_printf_ln(s, color,
1331                                _("  (fix conflicts and run \"git revert --continue\")"));
1332                else
1333                        status_printf_ln(s, color,
1334                                _("  (all conflicts fixed: run \"git revert --continue\")"));
1335                status_printf_ln(s, color,
1336                        _("  (use \"git revert --abort\" to cancel the revert operation)"));
1337        }
1338        wt_longstatus_print_trailer(s);
1339}
1340
1341static void show_bisect_in_progress(struct wt_status *s,
1342                                struct wt_status_state *state,
1343                                const char *color)
1344{
1345        if (state->branch)
1346                status_printf_ln(s, color,
1347                                 _("You are currently bisecting, started from branch '%s'."),
1348                                 state->branch);
1349        else
1350                status_printf_ln(s, color,
1351                                 _("You are currently bisecting."));
1352        if (s->hints)
1353                status_printf_ln(s, color,
1354                        _("  (use \"git bisect reset\" to get back to the original branch)"));
1355        wt_longstatus_print_trailer(s);
1356}
1357
1358/*
1359 * Extract branch information from rebase/bisect
1360 */
1361static char *get_branch(const struct worktree *wt, const char *path)
1362{
1363        struct strbuf sb = STRBUF_INIT;
1364        struct object_id oid;
1365        const char *branch_name;
1366
1367        if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
1368                goto got_nothing;
1369
1370        while (sb.len && sb.buf[sb.len - 1] == '\n')
1371                strbuf_setlen(&sb, sb.len - 1);
1372        if (!sb.len)
1373                goto got_nothing;
1374        if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1375                strbuf_remove(&sb, 0, branch_name - sb.buf);
1376        else if (starts_with(sb.buf, "refs/"))
1377                ;
1378        else if (!get_oid_hex(sb.buf, &oid)) {
1379                strbuf_reset(&sb);
1380                strbuf_add_unique_abbrev(&sb, oid.hash, DEFAULT_ABBREV);
1381        } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1382                goto got_nothing;
1383        else                    /* bisect */
1384                ;
1385        return strbuf_detach(&sb, NULL);
1386
1387got_nothing:
1388        strbuf_release(&sb);
1389        return NULL;
1390}
1391
1392struct grab_1st_switch_cbdata {
1393        struct strbuf buf;
1394        struct object_id noid;
1395};
1396
1397static int grab_1st_switch(struct object_id *ooid, struct object_id *noid,
1398                           const char *email, unsigned long timestamp, int tz,
1399                           const char *message, void *cb_data)
1400{
1401        struct grab_1st_switch_cbdata *cb = cb_data;
1402        const char *target = NULL, *end;
1403
1404        if (!skip_prefix(message, "checkout: moving from ", &message))
1405                return 0;
1406        target = strstr(message, " to ");
1407        if (!target)
1408                return 0;
1409        target += strlen(" to ");
1410        strbuf_reset(&cb->buf);
1411        oidcpy(&cb->noid, noid);
1412        end = strchrnul(target, '\n');
1413        strbuf_add(&cb->buf, target, end - target);
1414        if (!strcmp(cb->buf.buf, "HEAD")) {
1415                /* HEAD is relative. Resolve it to the right reflog entry. */
1416                strbuf_reset(&cb->buf);
1417                strbuf_add_unique_abbrev(&cb->buf, noid->hash, DEFAULT_ABBREV);
1418        }
1419        return 1;
1420}
1421
1422static void wt_status_get_detached_from(struct wt_status_state *state)
1423{
1424        struct grab_1st_switch_cbdata cb;
1425        struct commit *commit;
1426        struct object_id oid;
1427        char *ref = NULL;
1428
1429        strbuf_init(&cb.buf, 0);
1430        if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1431                strbuf_release(&cb.buf);
1432                return;
1433        }
1434
1435        if (dwim_ref(cb.buf.buf, cb.buf.len, oid.hash, &ref) == 1 &&
1436            /* sha1 is a commit? match without further lookup */
1437            (!oidcmp(&cb.noid, &oid) ||
1438             /* perhaps sha1 is a tag, try to dereference to a commit */
1439             ((commit = lookup_commit_reference_gently(oid.hash, 1)) != NULL &&
1440              !oidcmp(&cb.noid, &commit->object.oid)))) {
1441                const char *from = ref;
1442                if (!skip_prefix(from, "refs/tags/", &from))
1443                        skip_prefix(from, "refs/remotes/", &from);
1444                state->detached_from = xstrdup(from);
1445        } else
1446                state->detached_from =
1447                        xstrdup(find_unique_abbrev(cb.noid.hash, DEFAULT_ABBREV));
1448        hashcpy(state->detached_sha1, cb.noid.hash);
1449        state->detached_at = !get_oid("HEAD", &oid) &&
1450                             !hashcmp(oid.hash, state->detached_sha1);
1451
1452        free(ref);
1453        strbuf_release(&cb.buf);
1454}
1455
1456int wt_status_check_rebase(const struct worktree *wt,
1457                           struct wt_status_state *state)
1458{
1459        struct stat st;
1460
1461        if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
1462                if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
1463                        state->am_in_progress = 1;
1464                        if (!stat(worktree_git_path(wt, "rebase-apply/patch"), &st) && !st.st_size)
1465                                state->am_empty_patch = 1;
1466                } else {
1467                        state->rebase_in_progress = 1;
1468                        state->branch = get_branch(wt, "rebase-apply/head-name");
1469                        state->onto = get_branch(wt, "rebase-apply/onto");
1470                }
1471        } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
1472                if (!stat(worktree_git_path(wt, "rebase-merge/interactive"), &st))
1473                        state->rebase_interactive_in_progress = 1;
1474                else
1475                        state->rebase_in_progress = 1;
1476                state->branch = get_branch(wt, "rebase-merge/head-name");
1477                state->onto = get_branch(wt, "rebase-merge/onto");
1478        } else
1479                return 0;
1480        return 1;
1481}
1482
1483int wt_status_check_bisect(const struct worktree *wt,
1484                           struct wt_status_state *state)
1485{
1486        struct stat st;
1487
1488        if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
1489                state->bisect_in_progress = 1;
1490                state->branch = get_branch(wt, "BISECT_START");
1491                return 1;
1492        }
1493        return 0;
1494}
1495
1496void wt_status_get_state(struct wt_status_state *state,
1497                         int get_detached_from)
1498{
1499        struct stat st;
1500        struct object_id oid;
1501
1502        if (!stat(git_path_merge_head(), &st)) {
1503                state->merge_in_progress = 1;
1504        } else if (wt_status_check_rebase(NULL, state)) {
1505                ;               /* all set */
1506        } else if (!stat(git_path_cherry_pick_head(), &st) &&
1507                        !get_oid("CHERRY_PICK_HEAD", &oid)) {
1508                state->cherry_pick_in_progress = 1;
1509                hashcpy(state->cherry_pick_head_sha1, oid.hash);
1510        }
1511        wt_status_check_bisect(NULL, state);
1512        if (!stat(git_path_revert_head(), &st) &&
1513            !get_oid("REVERT_HEAD", &oid)) {
1514                state->revert_in_progress = 1;
1515                hashcpy(state->revert_head_sha1, oid.hash);
1516        }
1517
1518        if (get_detached_from)
1519                wt_status_get_detached_from(state);
1520}
1521
1522static void wt_longstatus_print_state(struct wt_status *s,
1523                                      struct wt_status_state *state)
1524{
1525        const char *state_color = color(WT_STATUS_HEADER, s);
1526        if (state->merge_in_progress)
1527                show_merge_in_progress(s, state, state_color);
1528        else if (state->am_in_progress)
1529                show_am_in_progress(s, state, state_color);
1530        else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1531                show_rebase_in_progress(s, state, state_color);
1532        else if (state->cherry_pick_in_progress)
1533                show_cherry_pick_in_progress(s, state, state_color);
1534        else if (state->revert_in_progress)
1535                show_revert_in_progress(s, state, state_color);
1536        if (state->bisect_in_progress)
1537                show_bisect_in_progress(s, state, state_color);
1538}
1539
1540static void wt_longstatus_print(struct wt_status *s)
1541{
1542        const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1543        const char *branch_status_color = color(WT_STATUS_HEADER, s);
1544        struct wt_status_state state;
1545
1546        memset(&state, 0, sizeof(state));
1547        wt_status_get_state(&state,
1548                            s->branch && !strcmp(s->branch, "HEAD"));
1549
1550        if (s->branch) {
1551                const char *on_what = _("On branch ");
1552                const char *branch_name = s->branch;
1553                if (!strcmp(branch_name, "HEAD")) {
1554                        branch_status_color = color(WT_STATUS_NOBRANCH, s);
1555                        if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1556                                if (state.rebase_interactive_in_progress)
1557                                        on_what = _("interactive rebase in progress; onto ");
1558                                else
1559                                        on_what = _("rebase in progress; onto ");
1560                                branch_name = state.onto;
1561                        } else if (state.detached_from) {
1562                                branch_name = state.detached_from;
1563                                if (state.detached_at)
1564                                        on_what = _("HEAD detached at ");
1565                                else
1566                                        on_what = _("HEAD detached from ");
1567                        } else {
1568                                branch_name = "";
1569                                on_what = _("Not currently on any branch.");
1570                        }
1571                } else
1572                        skip_prefix(branch_name, "refs/heads/", &branch_name);
1573                status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1574                status_printf_more(s, branch_status_color, "%s", on_what);
1575                status_printf_more(s, branch_color, "%s\n", branch_name);
1576                if (!s->is_initial)
1577                        wt_longstatus_print_tracking(s);
1578        }
1579
1580        wt_longstatus_print_state(s, &state);
1581        free(state.branch);
1582        free(state.onto);
1583        free(state.detached_from);
1584
1585        if (s->is_initial) {
1586                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1587                status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
1588                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1589        }
1590
1591        wt_longstatus_print_updated(s);
1592        wt_longstatus_print_unmerged(s);
1593        wt_longstatus_print_changed(s);
1594        if (s->submodule_summary &&
1595            (!s->ignore_submodule_arg ||
1596             strcmp(s->ignore_submodule_arg, "all"))) {
1597                wt_longstatus_print_submodule_summary(s, 0);  /* staged */
1598                wt_longstatus_print_submodule_summary(s, 1);  /* unstaged */
1599        }
1600        if (s->show_untracked_files) {
1601                wt_longstatus_print_other(s, &s->untracked, _("Untracked files"), "add");
1602                if (s->show_ignored_files)
1603                        wt_longstatus_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1604                if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1605                        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1606                        status_printf_ln(s, GIT_COLOR_NORMAL,
1607                                         _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1608                                           "may speed it up, but you have to be careful not to forget to add\n"
1609                                           "new files yourself (see 'git help status')."),
1610                                         s->untracked_in_ms / 1000.0);
1611                }
1612        } else if (s->commitable)
1613                status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1614                        s->hints
1615                        ? _(" (use -u option to show untracked files)") : "");
1616
1617        if (s->verbose)
1618                wt_longstatus_print_verbose(s);
1619        if (!s->commitable) {
1620                if (s->amend)
1621                        status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1622                else if (s->nowarn)
1623                        ; /* nothing */
1624                else if (s->workdir_dirty) {
1625                        if (s->hints)
1626                                printf(_("no changes added to commit "
1627                                         "(use \"git add\" and/or \"git commit -a\")\n"));
1628                        else
1629                                printf(_("no changes added to commit\n"));
1630                } else if (s->untracked.nr) {
1631                        if (s->hints)
1632                                printf(_("nothing added to commit but untracked files "
1633                                         "present (use \"git add\" to track)\n"));
1634                        else
1635                                printf(_("nothing added to commit but untracked files present\n"));
1636                } else if (s->is_initial) {
1637                        if (s->hints)
1638                                printf(_("nothing to commit (create/copy files "
1639                                         "and use \"git add\" to track)\n"));
1640                        else
1641                                printf(_("nothing to commit\n"));
1642                } else if (!s->show_untracked_files) {
1643                        if (s->hints)
1644                                printf(_("nothing to commit (use -u to show untracked files)\n"));
1645                        else
1646                                printf(_("nothing to commit\n"));
1647                } else
1648                        printf(_("nothing to commit, working tree clean\n"));
1649        }
1650}
1651
1652static void wt_shortstatus_unmerged(struct string_list_item *it,
1653                           struct wt_status *s)
1654{
1655        struct wt_status_change_data *d = it->util;
1656        const char *how = "??";
1657
1658        switch (d->stagemask) {
1659        case 1: how = "DD"; break; /* both deleted */
1660        case 2: how = "AU"; break; /* added by us */
1661        case 3: how = "UD"; break; /* deleted by them */
1662        case 4: how = "UA"; break; /* added by them */
1663        case 5: how = "DU"; break; /* deleted by us */
1664        case 6: how = "AA"; break; /* both added */
1665        case 7: how = "UU"; break; /* both modified */
1666        }
1667        color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1668        if (s->null_termination) {
1669                fprintf(stdout, " %s%c", it->string, 0);
1670        } else {
1671                struct strbuf onebuf = STRBUF_INIT;
1672                const char *one;
1673                one = quote_path(it->string, s->prefix, &onebuf);
1674                printf(" %s\n", one);
1675                strbuf_release(&onebuf);
1676        }
1677}
1678
1679static void wt_shortstatus_status(struct string_list_item *it,
1680                         struct wt_status *s)
1681{
1682        struct wt_status_change_data *d = it->util;
1683
1684        if (d->index_status)
1685                color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1686        else
1687                putchar(' ');
1688        if (d->worktree_status)
1689                color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1690        else
1691                putchar(' ');
1692        putchar(' ');
1693        if (s->null_termination) {
1694                fprintf(stdout, "%s%c", it->string, 0);
1695                if (d->rename_source)
1696                        fprintf(stdout, "%s%c", d->rename_source, 0);
1697        } else {
1698                struct strbuf onebuf = STRBUF_INIT;
1699                const char *one;
1700
1701                if (d->rename_source) {
1702                        one = quote_path(d->rename_source, s->prefix, &onebuf);
1703                        if (*one != '"' && strchr(one, ' ') != NULL) {
1704                                putchar('"');
1705                                strbuf_addch(&onebuf, '"');
1706                                one = onebuf.buf;
1707                        }
1708                        printf("%s -> ", one);
1709                        strbuf_release(&onebuf);
1710                }
1711                one = quote_path(it->string, s->prefix, &onebuf);
1712                if (*one != '"' && strchr(one, ' ') != NULL) {
1713                        putchar('"');
1714                        strbuf_addch(&onebuf, '"');
1715                        one = onebuf.buf;
1716                }
1717                printf("%s\n", one);
1718                strbuf_release(&onebuf);
1719        }
1720}
1721
1722static void wt_shortstatus_other(struct string_list_item *it,
1723                                 struct wt_status *s, const char *sign)
1724{
1725        if (s->null_termination) {
1726                fprintf(stdout, "%s %s%c", sign, it->string, 0);
1727        } else {
1728                struct strbuf onebuf = STRBUF_INIT;
1729                const char *one;
1730                one = quote_path(it->string, s->prefix, &onebuf);
1731                color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1732                printf(" %s\n", one);
1733                strbuf_release(&onebuf);
1734        }
1735}
1736
1737static void wt_shortstatus_print_tracking(struct wt_status *s)
1738{
1739        struct branch *branch;
1740        const char *header_color = color(WT_STATUS_HEADER, s);
1741        const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1742        const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1743
1744        const char *base;
1745        const char *branch_name;
1746        int num_ours, num_theirs;
1747        int upstream_is_gone = 0;
1748
1749        color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1750
1751        if (!s->branch)
1752                return;
1753        branch_name = s->branch;
1754
1755#define LABEL(string) (s->no_gettext ? (string) : _(string))
1756
1757        if (s->is_initial)
1758                color_fprintf(s->fp, header_color, LABEL(N_("Initial commit on ")));
1759
1760        if (!strcmp(s->branch, "HEAD")) {
1761                color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1762                              LABEL(N_("HEAD (no branch)")));
1763                goto conclude;
1764        }
1765
1766        skip_prefix(branch_name, "refs/heads/", &branch_name);
1767
1768        branch = branch_get(branch_name);
1769
1770        color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1771
1772        if (stat_tracking_info(branch, &num_ours, &num_theirs, &base) < 0) {
1773                if (!base)
1774                        goto conclude;
1775
1776                upstream_is_gone = 1;
1777        }
1778
1779        base = shorten_unambiguous_ref(base, 0);
1780        color_fprintf(s->fp, header_color, "...");
1781        color_fprintf(s->fp, branch_color_remote, "%s", base);
1782        free((char *)base);
1783
1784        if (!upstream_is_gone && !num_ours && !num_theirs)
1785                goto conclude;
1786
1787        color_fprintf(s->fp, header_color, " [");
1788        if (upstream_is_gone) {
1789                color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1790        } else if (!num_ours) {
1791                color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1792                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1793        } else if (!num_theirs) {
1794                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1795                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1796        } else {
1797                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1798                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1799                color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1800                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1801        }
1802
1803        color_fprintf(s->fp, header_color, "]");
1804 conclude:
1805        fputc(s->null_termination ? '\0' : '\n', s->fp);
1806}
1807
1808static void wt_shortstatus_print(struct wt_status *s)
1809{
1810        struct string_list_item *it;
1811
1812        if (s->show_branch)
1813                wt_shortstatus_print_tracking(s);
1814
1815        for_each_string_list_item(it, &s->change) {
1816                struct wt_status_change_data *d = it->util;
1817
1818                if (d->stagemask)
1819                        wt_shortstatus_unmerged(it, s);
1820                else
1821                        wt_shortstatus_status(it, s);
1822        }
1823        for_each_string_list_item(it, &s->untracked)
1824                wt_shortstatus_other(it, s, "??");
1825
1826        for_each_string_list_item(it, &s->ignored)
1827                wt_shortstatus_other(it, s, "!!");
1828}
1829
1830static void wt_porcelain_print(struct wt_status *s)
1831{
1832        s->use_color = 0;
1833        s->relative_paths = 0;
1834        s->prefix = NULL;
1835        s->no_gettext = 1;
1836        wt_shortstatus_print(s);
1837}
1838
1839/*
1840 * Print branch information for porcelain v2 output.  These lines
1841 * are printed when the '--branch' parameter is given.
1842 *
1843 *    # branch.oid <commit><eol>
1844 *    # branch.head <head><eol>
1845 *   [# branch.upstream <upstream><eol>
1846 *   [# branch.ab +<ahead> -<behind><eol>]]
1847 *
1848 *      <commit> ::= the current commit hash or the the literal
1849 *                   "(initial)" to indicate an initialized repo
1850 *                   with no commits.
1851 *
1852 *        <head> ::= <branch_name> the current branch name or
1853 *                   "(detached)" literal when detached head or
1854 *                   "(unknown)" when something is wrong.
1855 *
1856 *    <upstream> ::= the upstream branch name, when set.
1857 *
1858 *       <ahead> ::= integer ahead value, when upstream set
1859 *                   and the commit is present (not gone).
1860 *
1861 *      <behind> ::= integer behind value, when upstream set
1862 *                   and commit is present.
1863 *
1864 *
1865 * The end-of-line is defined by the -z flag.
1866 *
1867 *                 <eol> ::= NUL when -z,
1868 *                           LF when NOT -z.
1869 *
1870 */
1871static void wt_porcelain_v2_print_tracking(struct wt_status *s)
1872{
1873        struct branch *branch;
1874        const char *base;
1875        const char *branch_name;
1876        struct wt_status_state state;
1877        int ab_info, nr_ahead, nr_behind;
1878        char eol = s->null_termination ? '\0' : '\n';
1879
1880        memset(&state, 0, sizeof(state));
1881        wt_status_get_state(&state, s->branch && !strcmp(s->branch, "HEAD"));
1882
1883        fprintf(s->fp, "# branch.oid %s%c",
1884                        (s->is_initial ? "(initial)" : sha1_to_hex(s->sha1_commit)),
1885                        eol);
1886
1887        if (!s->branch)
1888                fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
1889        else {
1890                if (!strcmp(s->branch, "HEAD")) {
1891                        fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
1892
1893                        if (state.rebase_in_progress || state.rebase_interactive_in_progress)
1894                                branch_name = state.onto;
1895                        else if (state.detached_from)
1896                                branch_name = state.detached_from;
1897                        else
1898                                branch_name = "";
1899                } else {
1900                        branch_name = NULL;
1901                        skip_prefix(s->branch, "refs/heads/", &branch_name);
1902
1903                        fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
1904                }
1905
1906                /* Lookup stats on the upstream tracking branch, if set. */
1907                branch = branch_get(branch_name);
1908                base = NULL;
1909                ab_info = (stat_tracking_info(branch, &nr_ahead, &nr_behind, &base) == 0);
1910                if (base) {
1911                        base = shorten_unambiguous_ref(base, 0);
1912                        fprintf(s->fp, "# branch.upstream %s%c", base, eol);
1913                        free((char *)base);
1914
1915                        if (ab_info)
1916                                fprintf(s->fp, "# branch.ab +%d -%d%c", nr_ahead, nr_behind, eol);
1917                }
1918        }
1919
1920        free(state.branch);
1921        free(state.onto);
1922        free(state.detached_from);
1923}
1924
1925/*
1926 * Convert various submodule status values into a
1927 * fixed-length string of characters in the buffer provided.
1928 */
1929static void wt_porcelain_v2_submodule_state(
1930        struct wt_status_change_data *d,
1931        char sub[5])
1932{
1933        if (S_ISGITLINK(d->mode_head) ||
1934                S_ISGITLINK(d->mode_index) ||
1935                S_ISGITLINK(d->mode_worktree)) {
1936                sub[0] = 'S';
1937                sub[1] = d->new_submodule_commits ? 'C' : '.';
1938                sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
1939                sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
1940        } else {
1941                sub[0] = 'N';
1942                sub[1] = '.';
1943                sub[2] = '.';
1944                sub[3] = '.';
1945        }
1946        sub[4] = 0;
1947}
1948
1949/*
1950 * Fix-up changed entries before we print them.
1951 */
1952static void wt_porcelain_v2_fix_up_changed(
1953        struct string_list_item *it,
1954        struct wt_status *s)
1955{
1956        struct wt_status_change_data *d = it->util;
1957
1958        if (!d->index_status) {
1959                /*
1960                 * This entry is unchanged in the index (relative to the head).
1961                 * Therefore, the collect_updated_cb was never called for this
1962                 * entry (during the head-vs-index scan) and so the head column
1963                 * fields were never set.
1964                 *
1965                 * We must have data for the index column (from the
1966                 * index-vs-worktree scan (otherwise, this entry should not be
1967                 * in the list of changes)).
1968                 *
1969                 * Copy index column fields to the head column, so that our
1970                 * output looks complete.
1971                 */
1972                assert(d->mode_head == 0);
1973                d->mode_head = d->mode_index;
1974                oidcpy(&d->oid_head, &d->oid_index);
1975        }
1976
1977        if (!d->worktree_status) {
1978                /*
1979                 * This entry is unchanged in the worktree (relative to the index).
1980                 * Therefore, the collect_changed_cb was never called for this entry
1981                 * (during the index-vs-worktree scan) and so the worktree column
1982                 * fields were never set.
1983                 *
1984                 * We must have data for the index column (from the head-vs-index
1985                 * scan).
1986                 *
1987                 * Copy the index column fields to the worktree column so that
1988                 * our output looks complete.
1989                 *
1990                 * Note that we only have a mode field in the worktree column
1991                 * because the scan code tries really hard to not have to compute it.
1992                 */
1993                assert(d->mode_worktree == 0);
1994                d->mode_worktree = d->mode_index;
1995        }
1996}
1997
1998/*
1999 * Print porcelain v2 info for tracked entries with changes.
2000 */
2001static void wt_porcelain_v2_print_changed_entry(
2002        struct string_list_item *it,
2003        struct wt_status *s)
2004{
2005        struct wt_status_change_data *d = it->util;
2006        struct strbuf buf = STRBUF_INIT;
2007        struct strbuf buf_from = STRBUF_INIT;
2008        const char *path = NULL;
2009        const char *path_from = NULL;
2010        char key[3];
2011        char submodule_token[5];
2012        char sep_char, eol_char;
2013
2014        wt_porcelain_v2_fix_up_changed(it, s);
2015        wt_porcelain_v2_submodule_state(d, submodule_token);
2016
2017        key[0] = d->index_status ? d->index_status : '.';
2018        key[1] = d->worktree_status ? d->worktree_status : '.';
2019        key[2] = 0;
2020
2021        if (s->null_termination) {
2022                /*
2023                 * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
2024                 * A single NUL character separates them.
2025                 */
2026                sep_char = '\0';
2027                eol_char = '\0';
2028                path = it->string;
2029                path_from = d->rename_source;
2030        } else {
2031                /*
2032                 * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
2033                 * The source path is only present when necessary.
2034                 * A single TAB separates them (because paths can contain spaces
2035                 * which are not escaped and C-quoting does escape TAB characters).
2036                 */
2037                sep_char = '\t';
2038                eol_char = '\n';
2039                path = quote_path(it->string, s->prefix, &buf);
2040                if (d->rename_source)
2041                        path_from = quote_path(d->rename_source, s->prefix, &buf_from);
2042        }
2043
2044        if (path_from)
2045                fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
2046                                key, submodule_token,
2047                                d->mode_head, d->mode_index, d->mode_worktree,
2048                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2049                                d->rename_status, d->rename_score,
2050                                path, sep_char, path_from, eol_char);
2051        else
2052                fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
2053                                key, submodule_token,
2054                                d->mode_head, d->mode_index, d->mode_worktree,
2055                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2056                                path, eol_char);
2057
2058        strbuf_release(&buf);
2059        strbuf_release(&buf_from);
2060}
2061
2062/*
2063 * Print porcelain v2 status info for unmerged entries.
2064 */
2065static void wt_porcelain_v2_print_unmerged_entry(
2066        struct string_list_item *it,
2067        struct wt_status *s)
2068{
2069        struct wt_status_change_data *d = it->util;
2070        const struct cache_entry *ce;
2071        struct strbuf buf_index = STRBUF_INIT;
2072        const char *path_index = NULL;
2073        int pos, stage, sum;
2074        struct {
2075                int mode;
2076                struct object_id oid;
2077        } stages[3];
2078        char *key;
2079        char submodule_token[5];
2080        char unmerged_prefix = 'u';
2081        char eol_char = s->null_termination ? '\0' : '\n';
2082
2083        wt_porcelain_v2_submodule_state(d, submodule_token);
2084
2085        switch (d->stagemask) {
2086        case 1: key = "DD"; break; /* both deleted */
2087        case 2: key = "AU"; break; /* added by us */
2088        case 3: key = "UD"; break; /* deleted by them */
2089        case 4: key = "UA"; break; /* added by them */
2090        case 5: key = "DU"; break; /* deleted by us */
2091        case 6: key = "AA"; break; /* both added */
2092        case 7: key = "UU"; break; /* both modified */
2093        default:
2094                die("BUG: unhandled unmerged status %x", d->stagemask);
2095        }
2096
2097        /*
2098         * Disregard d.aux.porcelain_v2 data that we accumulated
2099         * for the head and index columns during the scans and
2100         * replace with the actual stage data.
2101         *
2102         * Note that this is a last-one-wins for each the individual
2103         * stage [123] columns in the event of multiple cache entries
2104         * for same stage.
2105         */
2106        memset(stages, 0, sizeof(stages));
2107        sum = 0;
2108        pos = cache_name_pos(it->string, strlen(it->string));
2109        assert(pos < 0);
2110        pos = -pos-1;
2111        while (pos < active_nr) {
2112                ce = active_cache[pos++];
2113                stage = ce_stage(ce);
2114                if (strcmp(ce->name, it->string) || !stage)
2115                        break;
2116                stages[stage - 1].mode = ce->ce_mode;
2117                oidcpy(&stages[stage - 1].oid, &ce->oid);
2118                sum |= (1 << (stage - 1));
2119        }
2120        if (sum != d->stagemask)
2121                die("BUG: observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
2122
2123        if (s->null_termination)
2124                path_index = it->string;
2125        else
2126                path_index = quote_path(it->string, s->prefix, &buf_index);
2127
2128        fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
2129                        unmerged_prefix, key, submodule_token,
2130                        stages[0].mode, /* stage 1 */
2131                        stages[1].mode, /* stage 2 */
2132                        stages[2].mode, /* stage 3 */
2133                        d->mode_worktree,
2134                        oid_to_hex(&stages[0].oid), /* stage 1 */
2135                        oid_to_hex(&stages[1].oid), /* stage 2 */
2136                        oid_to_hex(&stages[2].oid), /* stage 3 */
2137                        path_index,
2138                        eol_char);
2139
2140        strbuf_release(&buf_index);
2141}
2142
2143/*
2144 * Print porcelain V2 status info for untracked and ignored entries.
2145 */
2146static void wt_porcelain_v2_print_other(
2147        struct string_list_item *it,
2148        struct wt_status *s,
2149        char prefix)
2150{
2151        struct strbuf buf = STRBUF_INIT;
2152        const char *path;
2153        char eol_char;
2154
2155        if (s->null_termination) {
2156                path = it->string;
2157                eol_char = '\0';
2158        } else {
2159                path = quote_path(it->string, s->prefix, &buf);
2160                eol_char = '\n';
2161        }
2162
2163        fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
2164
2165        strbuf_release(&buf);
2166}
2167
2168/*
2169 * Print porcelain V2 status.
2170 *
2171 * [<v2_branch>]
2172 * [<v2_changed_items>]*
2173 * [<v2_unmerged_items>]*
2174 * [<v2_untracked_items>]*
2175 * [<v2_ignored_items>]*
2176 *
2177 */
2178static void wt_porcelain_v2_print(struct wt_status *s)
2179{
2180        struct wt_status_change_data *d;
2181        struct string_list_item *it;
2182        int i;
2183
2184        if (s->show_branch)
2185                wt_porcelain_v2_print_tracking(s);
2186
2187        for (i = 0; i < s->change.nr; i++) {
2188                it = &(s->change.items[i]);
2189                d = it->util;
2190                if (!d->stagemask)
2191                        wt_porcelain_v2_print_changed_entry(it, s);
2192        }
2193
2194        for (i = 0; i < s->change.nr; i++) {
2195                it = &(s->change.items[i]);
2196                d = it->util;
2197                if (d->stagemask)
2198                        wt_porcelain_v2_print_unmerged_entry(it, s);
2199        }
2200
2201        for (i = 0; i < s->untracked.nr; i++) {
2202                it = &(s->untracked.items[i]);
2203                wt_porcelain_v2_print_other(it, s, '?');
2204        }
2205
2206        for (i = 0; i < s->ignored.nr; i++) {
2207                it = &(s->ignored.items[i]);
2208                wt_porcelain_v2_print_other(it, s, '!');
2209        }
2210}
2211
2212void wt_status_print(struct wt_status *s)
2213{
2214        switch (s->status_format) {
2215        case STATUS_FORMAT_SHORT:
2216                wt_shortstatus_print(s);
2217                break;
2218        case STATUS_FORMAT_PORCELAIN:
2219                wt_porcelain_print(s);
2220                break;
2221        case STATUS_FORMAT_PORCELAIN_V2:
2222                wt_porcelain_v2_print(s);
2223                break;
2224        case STATUS_FORMAT_UNSPECIFIED:
2225                die("BUG: finalize_deferred_config() should have been called");
2226                break;
2227        case STATUS_FORMAT_NONE:
2228        case STATUS_FORMAT_LONG:
2229                wt_longstatus_print(s);
2230                break;
2231        }
2232}
2233
2234/**
2235 * Returns 1 if there are unstaged changes, 0 otherwise.
2236 */
2237int has_unstaged_changes(int ignore_submodules)
2238{
2239        struct rev_info rev_info;
2240        int result;
2241
2242        init_revisions(&rev_info, NULL);
2243        if (ignore_submodules)
2244                DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
2245        DIFF_OPT_SET(&rev_info.diffopt, QUICK);
2246        diff_setup_done(&rev_info.diffopt);
2247        result = run_diff_files(&rev_info, 0);
2248        return diff_result_code(&rev_info.diffopt, result);
2249}
2250
2251/**
2252 * Returns 1 if there are uncommitted changes, 0 otherwise.
2253 */
2254int has_uncommitted_changes(int ignore_submodules)
2255{
2256        struct rev_info rev_info;
2257        int result;
2258
2259        if (is_cache_unborn())
2260                return 0;
2261
2262        init_revisions(&rev_info, NULL);
2263        if (ignore_submodules)
2264                DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
2265        DIFF_OPT_SET(&rev_info.diffopt, QUICK);
2266        add_head_to_pending(&rev_info);
2267        diff_setup_done(&rev_info.diffopt);
2268        result = run_diff_index(&rev_info, 1);
2269        return diff_result_code(&rev_info.diffopt, result);
2270}
2271
2272/**
2273 * If the work tree has unstaged or uncommitted changes, dies with the
2274 * appropriate message.
2275 */
2276int require_clean_work_tree(const char *action, const char *hint, int ignore_submodules, int gently)
2277{
2278        struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file));
2279        int err = 0, fd;
2280
2281        fd = hold_locked_index(lock_file, 0);
2282        refresh_cache(REFRESH_QUIET);
2283        if (0 <= fd)
2284                update_index_if_able(&the_index, lock_file);
2285        rollback_lock_file(lock_file);
2286
2287        if (has_unstaged_changes(ignore_submodules)) {
2288                /* TRANSLATORS: the action is e.g. "pull with rebase" */
2289                error(_("cannot %s: You have unstaged changes."), _(action));
2290                err = 1;
2291        }
2292
2293        if (has_uncommitted_changes(ignore_submodules)) {
2294                if (err)
2295                        error(_("additionally, your index contains uncommitted changes."));
2296                else
2297                        error(_("cannot %s: Your index contains uncommitted changes."),
2298                              _(action));
2299                err = 1;
2300        }
2301
2302        if (err) {
2303                if (hint)
2304                        error("%s", hint);
2305                if (!gently)
2306                        exit(128);
2307        }
2308
2309        return err;
2310}