wt-status.con commit Eighth batch for 2.17 (d0db9ed)
   1#include "cache.h"
   2#include "wt-status.h"
   3#include "object.h"
   4#include "dir.h"
   5#include "commit.h"
   6#include "diff.h"
   7#include "revision.h"
   8#include "diffcore.h"
   9#include "quote.h"
  10#include "run-command.h"
  11#include "argv-array.h"
  12#include "remote.h"
  13#include "refs.h"
  14#include "submodule.h"
  15#include "column.h"
  16#include "strbuf.h"
  17#include "utf8.h"
  18#include "worktree.h"
  19#include "lockfile.h"
  20
  21static const char cut_line[] =
  22"------------------------ >8 ------------------------\n";
  23
  24static char default_wt_status_colors[][COLOR_MAXLEN] = {
  25        GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
  26        GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
  27        GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
  28        GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
  29        GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
  30        GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
  31        GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
  32        GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
  33        GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
  34};
  35
  36static const char *color(int slot, struct wt_status *s)
  37{
  38        const char *c = "";
  39        if (want_color(s->use_color))
  40                c = s->color_palette[slot];
  41        if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
  42                c = s->color_palette[WT_STATUS_HEADER];
  43        return c;
  44}
  45
  46static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
  47                const char *fmt, va_list ap, const char *trail)
  48{
  49        struct strbuf sb = STRBUF_INIT;
  50        struct strbuf linebuf = STRBUF_INIT;
  51        const char *line, *eol;
  52
  53        strbuf_vaddf(&sb, fmt, ap);
  54        if (!sb.len) {
  55                if (s->display_comment_prefix) {
  56                        strbuf_addch(&sb, comment_line_char);
  57                        if (!trail)
  58                                strbuf_addch(&sb, ' ');
  59                }
  60                color_print_strbuf(s->fp, color, &sb);
  61                if (trail)
  62                        fprintf(s->fp, "%s", trail);
  63                strbuf_release(&sb);
  64                return;
  65        }
  66        for (line = sb.buf; *line; line = eol + 1) {
  67                eol = strchr(line, '\n');
  68
  69                strbuf_reset(&linebuf);
  70                if (at_bol && s->display_comment_prefix) {
  71                        strbuf_addch(&linebuf, comment_line_char);
  72                        if (*line != '\n' && *line != '\t')
  73                                strbuf_addch(&linebuf, ' ');
  74                }
  75                if (eol)
  76                        strbuf_add(&linebuf, line, eol - line);
  77                else
  78                        strbuf_addstr(&linebuf, line);
  79                color_print_strbuf(s->fp, color, &linebuf);
  80                if (eol)
  81                        fprintf(s->fp, "\n");
  82                else
  83                        break;
  84                at_bol = 1;
  85        }
  86        if (trail)
  87                fprintf(s->fp, "%s", trail);
  88        strbuf_release(&linebuf);
  89        strbuf_release(&sb);
  90}
  91
  92void status_printf_ln(struct wt_status *s, const char *color,
  93                        const char *fmt, ...)
  94{
  95        va_list ap;
  96
  97        va_start(ap, fmt);
  98        status_vprintf(s, 1, color, fmt, ap, "\n");
  99        va_end(ap);
 100}
 101
 102void status_printf(struct wt_status *s, const char *color,
 103                        const char *fmt, ...)
 104{
 105        va_list ap;
 106
 107        va_start(ap, fmt);
 108        status_vprintf(s, 1, color, fmt, ap, NULL);
 109        va_end(ap);
 110}
 111
 112static void status_printf_more(struct wt_status *s, const char *color,
 113                               const char *fmt, ...)
 114{
 115        va_list ap;
 116
 117        va_start(ap, fmt);
 118        status_vprintf(s, 0, color, fmt, ap, NULL);
 119        va_end(ap);
 120}
 121
 122void wt_status_prepare(struct wt_status *s)
 123{
 124        memset(s, 0, sizeof(*s));
 125        memcpy(s->color_palette, default_wt_status_colors,
 126               sizeof(default_wt_status_colors));
 127        s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 128        s->use_color = -1;
 129        s->relative_paths = 1;
 130        s->branch = resolve_refdup("HEAD", 0, NULL, NULL);
 131        s->reference = "HEAD";
 132        s->fp = stdout;
 133        s->index_file = get_index_file();
 134        s->change.strdup_strings = 1;
 135        s->untracked.strdup_strings = 1;
 136        s->ignored.strdup_strings = 1;
 137        s->show_branch = -1;  /* unspecified */
 138        s->show_stash = 0;
 139        s->ahead_behind_flags = AHEAD_BEHIND_UNSPECIFIED;
 140        s->display_comment_prefix = 0;
 141}
 142
 143static void wt_longstatus_print_unmerged_header(struct wt_status *s)
 144{
 145        int i;
 146        int del_mod_conflict = 0;
 147        int both_deleted = 0;
 148        int not_deleted = 0;
 149        const char *c = color(WT_STATUS_HEADER, s);
 150
 151        status_printf_ln(s, c, _("Unmerged paths:"));
 152
 153        for (i = 0; i < s->change.nr; i++) {
 154                struct string_list_item *it = &(s->change.items[i]);
 155                struct wt_status_change_data *d = it->util;
 156
 157                switch (d->stagemask) {
 158                case 0:
 159                        break;
 160                case 1:
 161                        both_deleted = 1;
 162                        break;
 163                case 3:
 164                case 5:
 165                        del_mod_conflict = 1;
 166                        break;
 167                default:
 168                        not_deleted = 1;
 169                        break;
 170                }
 171        }
 172
 173        if (!s->hints)
 174                return;
 175        if (s->whence != FROM_COMMIT)
 176                ;
 177        else if (!s->is_initial)
 178                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 179        else
 180                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 181
 182        if (!both_deleted) {
 183                if (!del_mod_conflict)
 184                        status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
 185                else
 186                        status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 187        } else if (!del_mod_conflict && !not_deleted) {
 188                status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
 189        } else {
 190                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 191        }
 192        status_printf_ln(s, c, "%s", "");
 193}
 194
 195static void wt_longstatus_print_cached_header(struct wt_status *s)
 196{
 197        const char *c = color(WT_STATUS_HEADER, s);
 198
 199        status_printf_ln(s, c, _("Changes to be committed:"));
 200        if (!s->hints)
 201                return;
 202        if (s->whence != FROM_COMMIT)
 203                ; /* NEEDSWORK: use "git reset --unresolve"??? */
 204        else if (!s->is_initial)
 205                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 206        else
 207                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 208        status_printf_ln(s, c, "%s", "");
 209}
 210
 211static void wt_longstatus_print_dirty_header(struct wt_status *s,
 212                                             int has_deleted,
 213                                             int has_dirty_submodules)
 214{
 215        const char *c = color(WT_STATUS_HEADER, s);
 216
 217        status_printf_ln(s, c, _("Changes not staged for commit:"));
 218        if (!s->hints)
 219                return;
 220        if (!has_deleted)
 221                status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
 222        else
 223                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
 224        status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
 225        if (has_dirty_submodules)
 226                status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
 227        status_printf_ln(s, c, "%s", "");
 228}
 229
 230static void wt_longstatus_print_other_header(struct wt_status *s,
 231                                             const char *what,
 232                                             const char *how)
 233{
 234        const char *c = color(WT_STATUS_HEADER, s);
 235        status_printf_ln(s, c, "%s:", what);
 236        if (!s->hints)
 237                return;
 238        status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
 239        status_printf_ln(s, c, "%s", "");
 240}
 241
 242static void wt_longstatus_print_trailer(struct wt_status *s)
 243{
 244        status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 245}
 246
 247#define quote_path quote_path_relative
 248
 249static const char *wt_status_unmerged_status_string(int stagemask)
 250{
 251        switch (stagemask) {
 252        case 1:
 253                return _("both deleted:");
 254        case 2:
 255                return _("added by us:");
 256        case 3:
 257                return _("deleted by them:");
 258        case 4:
 259                return _("added by them:");
 260        case 5:
 261                return _("deleted by us:");
 262        case 6:
 263                return _("both added:");
 264        case 7:
 265                return _("both modified:");
 266        default:
 267                die("BUG: unhandled unmerged status %x", stagemask);
 268        }
 269}
 270
 271static const char *wt_status_diff_status_string(int status)
 272{
 273        switch (status) {
 274        case DIFF_STATUS_ADDED:
 275                return _("new file:");
 276        case DIFF_STATUS_COPIED:
 277                return _("copied:");
 278        case DIFF_STATUS_DELETED:
 279                return _("deleted:");
 280        case DIFF_STATUS_MODIFIED:
 281                return _("modified:");
 282        case DIFF_STATUS_RENAMED:
 283                return _("renamed:");
 284        case DIFF_STATUS_TYPE_CHANGED:
 285                return _("typechange:");
 286        case DIFF_STATUS_UNKNOWN:
 287                return _("unknown:");
 288        case DIFF_STATUS_UNMERGED:
 289                return _("unmerged:");
 290        default:
 291                return NULL;
 292        }
 293}
 294
 295static int maxwidth(const char *(*label)(int), int minval, int maxval)
 296{
 297        int result = 0, i;
 298
 299        for (i = minval; i <= maxval; i++) {
 300                const char *s = label(i);
 301                int len = s ? utf8_strwidth(s) : 0;
 302                if (len > result)
 303                        result = len;
 304        }
 305        return result;
 306}
 307
 308static void wt_longstatus_print_unmerged_data(struct wt_status *s,
 309                                              struct string_list_item *it)
 310{
 311        const char *c = color(WT_STATUS_UNMERGED, s);
 312        struct wt_status_change_data *d = it->util;
 313        struct strbuf onebuf = STRBUF_INIT;
 314        static char *padding;
 315        static int label_width;
 316        const char *one, *how;
 317        int len;
 318
 319        if (!padding) {
 320                label_width = maxwidth(wt_status_unmerged_status_string, 1, 7);
 321                label_width += strlen(" ");
 322                padding = xmallocz(label_width);
 323                memset(padding, ' ', label_width);
 324        }
 325
 326        one = quote_path(it->string, s->prefix, &onebuf);
 327        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 328
 329        how = wt_status_unmerged_status_string(d->stagemask);
 330        len = label_width - utf8_strwidth(how);
 331        status_printf_more(s, c, "%s%.*s%s\n", how, len, padding, one);
 332        strbuf_release(&onebuf);
 333}
 334
 335static void wt_longstatus_print_change_data(struct wt_status *s,
 336                                            int change_type,
 337                                            struct string_list_item *it)
 338{
 339        struct wt_status_change_data *d = it->util;
 340        const char *c = color(change_type, s);
 341        int status;
 342        char *one_name;
 343        char *two_name;
 344        const char *one, *two;
 345        struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
 346        struct strbuf extra = STRBUF_INIT;
 347        static char *padding;
 348        static int label_width;
 349        const char *what;
 350        int len;
 351
 352        if (!padding) {
 353                /* If DIFF_STATUS_* uses outside the range [A..Z], we're in trouble */
 354                label_width = maxwidth(wt_status_diff_status_string, 'A', 'Z');
 355                label_width += strlen(" ");
 356                padding = xmallocz(label_width);
 357                memset(padding, ' ', label_width);
 358        }
 359
 360        one_name = two_name = it->string;
 361        switch (change_type) {
 362        case WT_STATUS_UPDATED:
 363                status = d->index_status;
 364                break;
 365        case WT_STATUS_CHANGED:
 366                if (d->new_submodule_commits || d->dirty_submodule) {
 367                        strbuf_addstr(&extra, " (");
 368                        if (d->new_submodule_commits)
 369                                strbuf_addstr(&extra, _("new commits, "));
 370                        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 371                                strbuf_addstr(&extra, _("modified content, "));
 372                        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 373                                strbuf_addstr(&extra, _("untracked content, "));
 374                        strbuf_setlen(&extra, extra.len - 2);
 375                        strbuf_addch(&extra, ')');
 376                }
 377                status = d->worktree_status;
 378                break;
 379        default:
 380                die("BUG: unhandled change_type %d in wt_longstatus_print_change_data",
 381                    change_type);
 382        }
 383
 384        /*
 385         * Only pick up the rename it's relevant. If the rename is for
 386         * the changed section and we're printing the updated section,
 387         * ignore it.
 388         */
 389        if (d->rename_status == status)
 390                one_name = d->rename_source;
 391
 392        one = quote_path(one_name, s->prefix, &onebuf);
 393        two = quote_path(two_name, s->prefix, &twobuf);
 394
 395        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 396        what = wt_status_diff_status_string(status);
 397        if (!what)
 398                die("BUG: unhandled diff status %c", status);
 399        len = label_width - utf8_strwidth(what);
 400        assert(len >= 0);
 401        if (one_name != two_name)
 402                status_printf_more(s, c, "%s%.*s%s -> %s",
 403                                   what, len, padding, one, two);
 404        else
 405                status_printf_more(s, c, "%s%.*s%s",
 406                                   what, len, padding, one);
 407        if (extra.len) {
 408                status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 409                strbuf_release(&extra);
 410        }
 411        status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 412        strbuf_release(&onebuf);
 413        strbuf_release(&twobuf);
 414}
 415
 416static char short_submodule_status(struct wt_status_change_data *d)
 417{
 418        if (d->new_submodule_commits)
 419                return 'M';
 420        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 421                return 'm';
 422        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 423                return '?';
 424        return d->worktree_status;
 425}
 426
 427static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 428                                         struct diff_options *options,
 429                                         void *data)
 430{
 431        struct wt_status *s = data;
 432        int i;
 433
 434        if (!q->nr)
 435                return;
 436        s->workdir_dirty = 1;
 437        for (i = 0; i < q->nr; i++) {
 438                struct diff_filepair *p;
 439                struct string_list_item *it;
 440                struct wt_status_change_data *d;
 441
 442                p = q->queue[i];
 443                it = string_list_insert(&s->change, p->two->path);
 444                d = it->util;
 445                if (!d) {
 446                        d = xcalloc(1, sizeof(*d));
 447                        it->util = d;
 448                }
 449                if (!d->worktree_status)
 450                        d->worktree_status = p->status;
 451                if (S_ISGITLINK(p->two->mode)) {
 452                        d->dirty_submodule = p->two->dirty_submodule;
 453                        d->new_submodule_commits = !!oidcmp(&p->one->oid,
 454                                                            &p->two->oid);
 455                        if (s->status_format == STATUS_FORMAT_SHORT)
 456                                d->worktree_status = short_submodule_status(d);
 457                }
 458
 459                switch (p->status) {
 460                case DIFF_STATUS_ADDED:
 461                        d->mode_worktree = p->two->mode;
 462                        break;
 463
 464                case DIFF_STATUS_DELETED:
 465                        d->mode_index = p->one->mode;
 466                        oidcpy(&d->oid_index, &p->one->oid);
 467                        /* mode_worktree is zero for a delete. */
 468                        break;
 469
 470                case DIFF_STATUS_COPIED:
 471                case DIFF_STATUS_RENAMED:
 472                        if (d->rename_status)
 473                                die("BUG: multiple renames on the same target? how?");
 474                        d->rename_source = xstrdup(p->one->path);
 475                        d->rename_score = p->score * 100 / MAX_SCORE;
 476                        d->rename_status = p->status;
 477                        /* fallthru */
 478                case DIFF_STATUS_MODIFIED:
 479                case DIFF_STATUS_TYPE_CHANGED:
 480                case DIFF_STATUS_UNMERGED:
 481                        d->mode_index = p->one->mode;
 482                        d->mode_worktree = p->two->mode;
 483                        oidcpy(&d->oid_index, &p->one->oid);
 484                        break;
 485
 486                default:
 487                        die("BUG: unhandled diff-files status '%c'", p->status);
 488                        break;
 489                }
 490
 491        }
 492}
 493
 494static int unmerged_mask(const char *path)
 495{
 496        int pos, mask;
 497        const struct cache_entry *ce;
 498
 499        pos = cache_name_pos(path, strlen(path));
 500        if (0 <= pos)
 501                return 0;
 502
 503        mask = 0;
 504        pos = -pos-1;
 505        while (pos < active_nr) {
 506                ce = active_cache[pos++];
 507                if (strcmp(ce->name, path) || !ce_stage(ce))
 508                        break;
 509                mask |= (1 << (ce_stage(ce) - 1));
 510        }
 511        return mask;
 512}
 513
 514static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 515                                         struct diff_options *options,
 516                                         void *data)
 517{
 518        struct wt_status *s = data;
 519        int i;
 520
 521        for (i = 0; i < q->nr; i++) {
 522                struct diff_filepair *p;
 523                struct string_list_item *it;
 524                struct wt_status_change_data *d;
 525
 526                p = q->queue[i];
 527                it = string_list_insert(&s->change, p->two->path);
 528                d = it->util;
 529                if (!d) {
 530                        d = xcalloc(1, sizeof(*d));
 531                        it->util = d;
 532                }
 533                if (!d->index_status)
 534                        d->index_status = p->status;
 535                switch (p->status) {
 536                case DIFF_STATUS_ADDED:
 537                        /* Leave {mode,oid}_head zero for an add. */
 538                        d->mode_index = p->two->mode;
 539                        oidcpy(&d->oid_index, &p->two->oid);
 540                        break;
 541                case DIFF_STATUS_DELETED:
 542                        d->mode_head = p->one->mode;
 543                        oidcpy(&d->oid_head, &p->one->oid);
 544                        /* Leave {mode,oid}_index zero for a delete. */
 545                        break;
 546
 547                case DIFF_STATUS_COPIED:
 548                case DIFF_STATUS_RENAMED:
 549                        if (d->rename_status)
 550                                die("BUG: multiple renames on the same target? how?");
 551                        d->rename_source = xstrdup(p->one->path);
 552                        d->rename_score = p->score * 100 / MAX_SCORE;
 553                        d->rename_status = p->status;
 554                        /* fallthru */
 555                case DIFF_STATUS_MODIFIED:
 556                case DIFF_STATUS_TYPE_CHANGED:
 557                        d->mode_head = p->one->mode;
 558                        d->mode_index = p->two->mode;
 559                        oidcpy(&d->oid_head, &p->one->oid);
 560                        oidcpy(&d->oid_index, &p->two->oid);
 561                        break;
 562                case DIFF_STATUS_UNMERGED:
 563                        d->stagemask = unmerged_mask(p->two->path);
 564                        /*
 565                         * Don't bother setting {mode,oid}_{head,index} since the print
 566                         * code will output the stage values directly and not use the
 567                         * values in these fields.
 568                         */
 569                        break;
 570
 571                default:
 572                        die("BUG: unhandled diff-index status '%c'", p->status);
 573                        break;
 574                }
 575        }
 576}
 577
 578static void wt_status_collect_changes_worktree(struct wt_status *s)
 579{
 580        struct rev_info rev;
 581
 582        init_revisions(&rev, NULL);
 583        setup_revisions(0, NULL, &rev, NULL);
 584        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 585        rev.diffopt.flags.dirty_submodules = 1;
 586        rev.diffopt.ita_invisible_in_index = 1;
 587        if (!s->show_untracked_files)
 588                rev.diffopt.flags.ignore_untracked_in_submodules = 1;
 589        if (s->ignore_submodule_arg) {
 590                rev.diffopt.flags.override_submodule_config = 1;
 591                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 592        }
 593        rev.diffopt.format_callback = wt_status_collect_changed_cb;
 594        rev.diffopt.format_callback_data = s;
 595        copy_pathspec(&rev.prune_data, &s->pathspec);
 596        run_diff_files(&rev, 0);
 597}
 598
 599static void wt_status_collect_changes_index(struct wt_status *s)
 600{
 601        struct rev_info rev;
 602        struct setup_revision_opt opt;
 603
 604        init_revisions(&rev, NULL);
 605        memset(&opt, 0, sizeof(opt));
 606        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 607        setup_revisions(0, NULL, &rev, &opt);
 608
 609        rev.diffopt.flags.override_submodule_config = 1;
 610        rev.diffopt.ita_invisible_in_index = 1;
 611        if (s->ignore_submodule_arg) {
 612                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 613        } else {
 614                /*
 615                 * Unless the user did explicitly request a submodule ignore
 616                 * mode by passing a command line option we do not ignore any
 617                 * changed submodule SHA-1s when comparing index and HEAD, no
 618                 * matter what is configured. Otherwise the user won't be
 619                 * shown any submodules she manually added (and which are
 620                 * staged to be committed), which would be really confusing.
 621                 */
 622                handle_ignore_submodules_arg(&rev.diffopt, "dirty");
 623        }
 624
 625        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 626        rev.diffopt.format_callback = wt_status_collect_updated_cb;
 627        rev.diffopt.format_callback_data = s;
 628        rev.diffopt.detect_rename = DIFF_DETECT_RENAME;
 629        rev.diffopt.rename_limit = 200;
 630        rev.diffopt.break_opt = 0;
 631        copy_pathspec(&rev.prune_data, &s->pathspec);
 632        run_diff_index(&rev, 1);
 633}
 634
 635static void wt_status_collect_changes_initial(struct wt_status *s)
 636{
 637        int i;
 638
 639        for (i = 0; i < active_nr; i++) {
 640                struct string_list_item *it;
 641                struct wt_status_change_data *d;
 642                const struct cache_entry *ce = active_cache[i];
 643
 644                if (!ce_path_match(ce, &s->pathspec, NULL))
 645                        continue;
 646                if (ce_intent_to_add(ce))
 647                        continue;
 648                it = string_list_insert(&s->change, ce->name);
 649                d = it->util;
 650                if (!d) {
 651                        d = xcalloc(1, sizeof(*d));
 652                        it->util = d;
 653                }
 654                if (ce_stage(ce)) {
 655                        d->index_status = DIFF_STATUS_UNMERGED;
 656                        d->stagemask |= (1 << (ce_stage(ce) - 1));
 657                        /*
 658                         * Don't bother setting {mode,oid}_{head,index} since the print
 659                         * code will output the stage values directly and not use the
 660                         * values in these fields.
 661                         */
 662                } else {
 663                        d->index_status = DIFF_STATUS_ADDED;
 664                        /* Leave {mode,oid}_head zero for adds. */
 665                        d->mode_index = ce->ce_mode;
 666                        oidcpy(&d->oid_index, &ce->oid);
 667                }
 668        }
 669}
 670
 671static void wt_status_collect_untracked(struct wt_status *s)
 672{
 673        int i;
 674        struct dir_struct dir;
 675        uint64_t t_begin = getnanotime();
 676
 677        if (!s->show_untracked_files)
 678                return;
 679
 680        memset(&dir, 0, sizeof(dir));
 681        if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 682                dir.flags |=
 683                        DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 684        if (s->show_ignored_mode) {
 685                dir.flags |= DIR_SHOW_IGNORED_TOO;
 686
 687                if (s->show_ignored_mode == SHOW_MATCHING_IGNORED)
 688                        dir.flags |= DIR_SHOW_IGNORED_TOO_MODE_MATCHING;
 689        } else {
 690                dir.untracked = the_index.untracked;
 691        }
 692
 693        setup_standard_excludes(&dir);
 694
 695        fill_directory(&dir, &the_index, &s->pathspec);
 696
 697        for (i = 0; i < dir.nr; i++) {
 698                struct dir_entry *ent = dir.entries[i];
 699                if (cache_name_is_other(ent->name, ent->len) &&
 700                    dir_path_match(ent, &s->pathspec, 0, NULL))
 701                        string_list_insert(&s->untracked, ent->name);
 702                free(ent);
 703        }
 704
 705        for (i = 0; i < dir.ignored_nr; i++) {
 706                struct dir_entry *ent = dir.ignored[i];
 707                if (cache_name_is_other(ent->name, ent->len) &&
 708                    dir_path_match(ent, &s->pathspec, 0, NULL))
 709                        string_list_insert(&s->ignored, ent->name);
 710                free(ent);
 711        }
 712
 713        free(dir.entries);
 714        free(dir.ignored);
 715        clear_directory(&dir);
 716
 717        if (advice_status_u_option)
 718                s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 719}
 720
 721void wt_status_collect(struct wt_status *s)
 722{
 723        wt_status_collect_changes_worktree(s);
 724
 725        if (s->is_initial)
 726                wt_status_collect_changes_initial(s);
 727        else
 728                wt_status_collect_changes_index(s);
 729        wt_status_collect_untracked(s);
 730}
 731
 732static void wt_longstatus_print_unmerged(struct wt_status *s)
 733{
 734        int shown_header = 0;
 735        int i;
 736
 737        for (i = 0; i < s->change.nr; i++) {
 738                struct wt_status_change_data *d;
 739                struct string_list_item *it;
 740                it = &(s->change.items[i]);
 741                d = it->util;
 742                if (!d->stagemask)
 743                        continue;
 744                if (!shown_header) {
 745                        wt_longstatus_print_unmerged_header(s);
 746                        shown_header = 1;
 747                }
 748                wt_longstatus_print_unmerged_data(s, it);
 749        }
 750        if (shown_header)
 751                wt_longstatus_print_trailer(s);
 752
 753}
 754
 755static void wt_longstatus_print_updated(struct wt_status *s)
 756{
 757        int shown_header = 0;
 758        int i;
 759
 760        for (i = 0; i < s->change.nr; i++) {
 761                struct wt_status_change_data *d;
 762                struct string_list_item *it;
 763                it = &(s->change.items[i]);
 764                d = it->util;
 765                if (!d->index_status ||
 766                    d->index_status == DIFF_STATUS_UNMERGED)
 767                        continue;
 768                if (!shown_header) {
 769                        wt_longstatus_print_cached_header(s);
 770                        s->commitable = 1;
 771                        shown_header = 1;
 772                }
 773                wt_longstatus_print_change_data(s, WT_STATUS_UPDATED, it);
 774        }
 775        if (shown_header)
 776                wt_longstatus_print_trailer(s);
 777}
 778
 779/*
 780 * -1 : has delete
 781 *  0 : no change
 782 *  1 : some change but no delete
 783 */
 784static int wt_status_check_worktree_changes(struct wt_status *s,
 785                                             int *dirty_submodules)
 786{
 787        int i;
 788        int changes = 0;
 789
 790        *dirty_submodules = 0;
 791
 792        for (i = 0; i < s->change.nr; i++) {
 793                struct wt_status_change_data *d;
 794                d = s->change.items[i].util;
 795                if (!d->worktree_status ||
 796                    d->worktree_status == DIFF_STATUS_UNMERGED)
 797                        continue;
 798                if (!changes)
 799                        changes = 1;
 800                if (d->dirty_submodule)
 801                        *dirty_submodules = 1;
 802                if (d->worktree_status == DIFF_STATUS_DELETED)
 803                        changes = -1;
 804        }
 805        return changes;
 806}
 807
 808static void wt_longstatus_print_changed(struct wt_status *s)
 809{
 810        int i, dirty_submodules;
 811        int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 812
 813        if (!worktree_changes)
 814                return;
 815
 816        wt_longstatus_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 817
 818        for (i = 0; i < s->change.nr; i++) {
 819                struct wt_status_change_data *d;
 820                struct string_list_item *it;
 821                it = &(s->change.items[i]);
 822                d = it->util;
 823                if (!d->worktree_status ||
 824                    d->worktree_status == DIFF_STATUS_UNMERGED)
 825                        continue;
 826                wt_longstatus_print_change_data(s, WT_STATUS_CHANGED, it);
 827        }
 828        wt_longstatus_print_trailer(s);
 829}
 830
 831static int stash_count_refs(struct object_id *ooid, struct object_id *noid,
 832                            const char *email, timestamp_t timestamp, int tz,
 833                            const char *message, void *cb_data)
 834{
 835        int *c = cb_data;
 836        (*c)++;
 837        return 0;
 838}
 839
 840static void wt_longstatus_print_stash_summary(struct wt_status *s)
 841{
 842        int stash_count = 0;
 843
 844        for_each_reflog_ent("refs/stash", stash_count_refs, &stash_count);
 845        if (stash_count > 0)
 846                status_printf_ln(s, GIT_COLOR_NORMAL,
 847                                 Q_("Your stash currently has %d entry",
 848                                    "Your stash currently has %d entries", stash_count),
 849                                 stash_count);
 850}
 851
 852static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncommitted)
 853{
 854        struct child_process sm_summary = CHILD_PROCESS_INIT;
 855        struct strbuf cmd_stdout = STRBUF_INIT;
 856        struct strbuf summary = STRBUF_INIT;
 857        char *summary_content;
 858
 859        argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 860                         s->index_file);
 861
 862        argv_array_push(&sm_summary.args, "submodule");
 863        argv_array_push(&sm_summary.args, "summary");
 864        argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 865        argv_array_push(&sm_summary.args, "--for-status");
 866        argv_array_push(&sm_summary.args, "--summary-limit");
 867        argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 868        if (!uncommitted)
 869                argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 870
 871        sm_summary.git_cmd = 1;
 872        sm_summary.no_stdin = 1;
 873
 874        capture_command(&sm_summary, &cmd_stdout, 1024);
 875
 876        /* prepend header, only if there's an actual output */
 877        if (cmd_stdout.len) {
 878                if (uncommitted)
 879                        strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 880                else
 881                        strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 882                strbuf_addstr(&summary, "\n\n");
 883        }
 884        strbuf_addbuf(&summary, &cmd_stdout);
 885        strbuf_release(&cmd_stdout);
 886
 887        if (s->display_comment_prefix) {
 888                size_t len;
 889                summary_content = strbuf_detach(&summary, &len);
 890                strbuf_add_commented_lines(&summary, summary_content, len);
 891                free(summary_content);
 892        }
 893
 894        fputs(summary.buf, s->fp);
 895        strbuf_release(&summary);
 896}
 897
 898static void wt_longstatus_print_other(struct wt_status *s,
 899                                      struct string_list *l,
 900                                      const char *what,
 901                                      const char *how)
 902{
 903        int i;
 904        struct strbuf buf = STRBUF_INIT;
 905        static struct string_list output = STRING_LIST_INIT_DUP;
 906        struct column_options copts;
 907
 908        if (!l->nr)
 909                return;
 910
 911        wt_longstatus_print_other_header(s, what, how);
 912
 913        for (i = 0; i < l->nr; i++) {
 914                struct string_list_item *it;
 915                const char *path;
 916                it = &(l->items[i]);
 917                path = quote_path(it->string, s->prefix, &buf);
 918                if (column_active(s->colopts)) {
 919                        string_list_append(&output, path);
 920                        continue;
 921                }
 922                status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 923                status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 924                                   "%s\n", path);
 925        }
 926
 927        strbuf_release(&buf);
 928        if (!column_active(s->colopts))
 929                goto conclude;
 930
 931        strbuf_addf(&buf, "%s%s\t%s",
 932                    color(WT_STATUS_HEADER, s),
 933                    s->display_comment_prefix ? "#" : "",
 934                    color(WT_STATUS_UNTRACKED, s));
 935        memset(&copts, 0, sizeof(copts));
 936        copts.padding = 1;
 937        copts.indent = buf.buf;
 938        if (want_color(s->use_color))
 939                copts.nl = GIT_COLOR_RESET "\n";
 940        print_columns(&output, s->colopts, &copts);
 941        string_list_clear(&output, 0);
 942        strbuf_release(&buf);
 943conclude:
 944        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 945}
 946
 947size_t wt_status_locate_end(const char *s, size_t len)
 948{
 949        const char *p;
 950        struct strbuf pattern = STRBUF_INIT;
 951
 952        strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
 953        if (starts_with(s, pattern.buf + 1))
 954                len = 0;
 955        else if ((p = strstr(s, pattern.buf)))
 956                len = p - s + 1;
 957        strbuf_release(&pattern);
 958        return len;
 959}
 960
 961void wt_status_add_cut_line(FILE *fp)
 962{
 963        const char *explanation = _("Do not modify or remove the line above.\nEverything below it will be ignored.");
 964        struct strbuf buf = STRBUF_INIT;
 965
 966        fprintf(fp, "%c %s", comment_line_char, cut_line);
 967        strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
 968        fputs(buf.buf, fp);
 969        strbuf_release(&buf);
 970}
 971
 972static void wt_longstatus_print_verbose(struct wt_status *s)
 973{
 974        struct rev_info rev;
 975        struct setup_revision_opt opt;
 976        int dirty_submodules;
 977        const char *c = color(WT_STATUS_HEADER, s);
 978
 979        init_revisions(&rev, NULL);
 980        rev.diffopt.flags.allow_textconv = 1;
 981        rev.diffopt.ita_invisible_in_index = 1;
 982
 983        memset(&opt, 0, sizeof(opt));
 984        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 985        setup_revisions(0, NULL, &rev, &opt);
 986
 987        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 988        rev.diffopt.detect_rename = DIFF_DETECT_RENAME;
 989        rev.diffopt.file = s->fp;
 990        rev.diffopt.close_file = 0;
 991        /*
 992         * If we're not going to stdout, then we definitely don't
 993         * want color, since we are going to the commit message
 994         * file (and even the "auto" setting won't work, since it
 995         * will have checked isatty on stdout). But we then do want
 996         * to insert the scissor line here to reliably remove the
 997         * diff before committing.
 998         */
 999        if (s->fp != stdout) {
1000                rev.diffopt.use_color = 0;
1001                wt_status_add_cut_line(s->fp);
1002        }
1003        if (s->verbose > 1 && s->commitable) {
1004                /* print_updated() printed a header, so do we */
1005                if (s->fp != stdout)
1006                        wt_longstatus_print_trailer(s);
1007                status_printf_ln(s, c, _("Changes to be committed:"));
1008                rev.diffopt.a_prefix = "c/";
1009                rev.diffopt.b_prefix = "i/";
1010        } /* else use prefix as per user config */
1011        run_diff_index(&rev, 1);
1012        if (s->verbose > 1 &&
1013            wt_status_check_worktree_changes(s, &dirty_submodules)) {
1014                status_printf_ln(s, c,
1015                        "--------------------------------------------------");
1016                status_printf_ln(s, c, _("Changes not staged for commit:"));
1017                setup_work_tree();
1018                rev.diffopt.a_prefix = "i/";
1019                rev.diffopt.b_prefix = "w/";
1020                run_diff_files(&rev, 0);
1021        }
1022}
1023
1024static void wt_longstatus_print_tracking(struct wt_status *s)
1025{
1026        struct strbuf sb = STRBUF_INIT;
1027        const char *cp, *ep, *branch_name;
1028        struct branch *branch;
1029        char comment_line_string[3];
1030        int i;
1031
1032        assert(s->branch && !s->is_initial);
1033        if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
1034                return;
1035        branch = branch_get(branch_name);
1036        if (!format_tracking_info(branch, &sb, s->ahead_behind_flags))
1037                return;
1038
1039        i = 0;
1040        if (s->display_comment_prefix) {
1041                comment_line_string[i++] = comment_line_char;
1042                comment_line_string[i++] = ' ';
1043        }
1044        comment_line_string[i] = '\0';
1045
1046        for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
1047                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
1048                                 "%s%.*s", comment_line_string,
1049                                 (int)(ep - cp), cp);
1050        if (s->display_comment_prefix)
1051                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
1052                                 comment_line_char);
1053        else
1054                fputs("\n", s->fp);
1055        strbuf_release(&sb);
1056}
1057
1058static int has_unmerged(struct wt_status *s)
1059{
1060        int i;
1061
1062        for (i = 0; i < s->change.nr; i++) {
1063                struct wt_status_change_data *d;
1064                d = s->change.items[i].util;
1065                if (d->stagemask)
1066                        return 1;
1067        }
1068        return 0;
1069}
1070
1071static void show_merge_in_progress(struct wt_status *s,
1072                                struct wt_status_state *state,
1073                                const char *color)
1074{
1075        if (has_unmerged(s)) {
1076                status_printf_ln(s, color, _("You have unmerged paths."));
1077                if (s->hints) {
1078                        status_printf_ln(s, color,
1079                                         _("  (fix conflicts and run \"git commit\")"));
1080                        status_printf_ln(s, color,
1081                                         _("  (use \"git merge --abort\" to abort the merge)"));
1082                }
1083        } else {
1084                s-> commitable = 1;
1085                status_printf_ln(s, color,
1086                        _("All conflicts fixed but you are still merging."));
1087                if (s->hints)
1088                        status_printf_ln(s, color,
1089                                _("  (use \"git commit\" to conclude merge)"));
1090        }
1091        wt_longstatus_print_trailer(s);
1092}
1093
1094static void show_am_in_progress(struct wt_status *s,
1095                                struct wt_status_state *state,
1096                                const char *color)
1097{
1098        status_printf_ln(s, color,
1099                _("You are in the middle of an am session."));
1100        if (state->am_empty_patch)
1101                status_printf_ln(s, color,
1102                        _("The current patch is empty."));
1103        if (s->hints) {
1104                if (!state->am_empty_patch)
1105                        status_printf_ln(s, color,
1106                                _("  (fix conflicts and then run \"git am --continue\")"));
1107                status_printf_ln(s, color,
1108                        _("  (use \"git am --skip\" to skip this patch)"));
1109                status_printf_ln(s, color,
1110                        _("  (use \"git am --abort\" to restore the original branch)"));
1111        }
1112        wt_longstatus_print_trailer(s);
1113}
1114
1115static char *read_line_from_git_path(const char *filename)
1116{
1117        struct strbuf buf = STRBUF_INIT;
1118        FILE *fp = fopen_or_warn(git_path("%s", filename), "r");
1119
1120        if (!fp) {
1121                strbuf_release(&buf);
1122                return NULL;
1123        }
1124        strbuf_getline_lf(&buf, fp);
1125        if (!fclose(fp)) {
1126                return strbuf_detach(&buf, NULL);
1127        } else {
1128                strbuf_release(&buf);
1129                return NULL;
1130        }
1131}
1132
1133static int split_commit_in_progress(struct wt_status *s)
1134{
1135        int split_in_progress = 0;
1136        char *head, *orig_head, *rebase_amend, *rebase_orig_head;
1137
1138        if ((!s->amend && !s->nowarn && !s->workdir_dirty) ||
1139            !s->branch || strcmp(s->branch, "HEAD"))
1140                return 0;
1141
1142        head = read_line_from_git_path("HEAD");
1143        orig_head = read_line_from_git_path("ORIG_HEAD");
1144        rebase_amend = read_line_from_git_path("rebase-merge/amend");
1145        rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1146
1147        if (!head || !orig_head || !rebase_amend || !rebase_orig_head)
1148                ; /* fall through, no split in progress */
1149        else if (!strcmp(rebase_amend, rebase_orig_head))
1150                split_in_progress = !!strcmp(head, rebase_amend);
1151        else if (strcmp(orig_head, rebase_orig_head))
1152                split_in_progress = 1;
1153
1154        free(head);
1155        free(orig_head);
1156        free(rebase_amend);
1157        free(rebase_orig_head);
1158
1159        return split_in_progress;
1160}
1161
1162/*
1163 * Turn
1164 * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1165 * into
1166 * "pick d6a2f03 some message"
1167 *
1168 * The function assumes that the line does not contain useless spaces
1169 * before or after the command.
1170 */
1171static void abbrev_sha1_in_line(struct strbuf *line)
1172{
1173        struct strbuf **split;
1174        int i;
1175
1176        if (starts_with(line->buf, "exec ") ||
1177            starts_with(line->buf, "x "))
1178                return;
1179
1180        split = strbuf_split_max(line, ' ', 3);
1181        if (split[0] && split[1]) {
1182                struct object_id oid;
1183
1184                /*
1185                 * strbuf_split_max left a space. Trim it and re-add
1186                 * it after abbreviation.
1187                 */
1188                strbuf_trim(split[1]);
1189                if (!get_oid(split[1]->buf, &oid)) {
1190                        strbuf_reset(split[1]);
1191                        strbuf_add_unique_abbrev(split[1], oid.hash,
1192                                                 DEFAULT_ABBREV);
1193                        strbuf_addch(split[1], ' ');
1194                        strbuf_reset(line);
1195                        for (i = 0; split[i]; i++)
1196                                strbuf_addbuf(line, split[i]);
1197                }
1198        }
1199        strbuf_list_free(split);
1200}
1201
1202static int read_rebase_todolist(const char *fname, struct string_list *lines)
1203{
1204        struct strbuf line = STRBUF_INIT;
1205        FILE *f = fopen(git_path("%s", fname), "r");
1206
1207        if (!f) {
1208                if (errno == ENOENT)
1209                        return -1;
1210                die_errno("Could not open file %s for reading",
1211                          git_path("%s", fname));
1212        }
1213        while (!strbuf_getline_lf(&line, f)) {
1214                if (line.len && line.buf[0] == comment_line_char)
1215                        continue;
1216                strbuf_trim(&line);
1217                if (!line.len)
1218                        continue;
1219                abbrev_sha1_in_line(&line);
1220                string_list_append(lines, line.buf);
1221        }
1222        fclose(f);
1223        strbuf_release(&line);
1224        return 0;
1225}
1226
1227static void show_rebase_information(struct wt_status *s,
1228                                        struct wt_status_state *state,
1229                                        const char *color)
1230{
1231        if (state->rebase_interactive_in_progress) {
1232                int i;
1233                int nr_lines_to_show = 2;
1234
1235                struct string_list have_done = STRING_LIST_INIT_DUP;
1236                struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1237
1238                read_rebase_todolist("rebase-merge/done", &have_done);
1239                if (read_rebase_todolist("rebase-merge/git-rebase-todo",
1240                                         &yet_to_do))
1241                        status_printf_ln(s, color,
1242                                _("git-rebase-todo is missing."));
1243                if (have_done.nr == 0)
1244                        status_printf_ln(s, color, _("No commands done."));
1245                else {
1246                        status_printf_ln(s, color,
1247                                Q_("Last command done (%d command done):",
1248                                        "Last commands done (%d commands done):",
1249                                        have_done.nr),
1250                                have_done.nr);
1251                        for (i = (have_done.nr > nr_lines_to_show)
1252                                ? have_done.nr - nr_lines_to_show : 0;
1253                                i < have_done.nr;
1254                                i++)
1255                                status_printf_ln(s, color, "   %s", have_done.items[i].string);
1256                        if (have_done.nr > nr_lines_to_show && s->hints)
1257                                status_printf_ln(s, color,
1258                                        _("  (see more in file %s)"), git_path("rebase-merge/done"));
1259                }
1260
1261                if (yet_to_do.nr == 0)
1262                        status_printf_ln(s, color,
1263                                         _("No commands remaining."));
1264                else {
1265                        status_printf_ln(s, color,
1266                                Q_("Next command to do (%d remaining command):",
1267                                        "Next commands to do (%d remaining commands):",
1268                                        yet_to_do.nr),
1269                                yet_to_do.nr);
1270                        for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1271                                status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1272                        if (s->hints)
1273                                status_printf_ln(s, color,
1274                                        _("  (use \"git rebase --edit-todo\" to view and edit)"));
1275                }
1276                string_list_clear(&yet_to_do, 0);
1277                string_list_clear(&have_done, 0);
1278        }
1279}
1280
1281static void print_rebase_state(struct wt_status *s,
1282                                struct wt_status_state *state,
1283                                const char *color)
1284{
1285        if (state->branch)
1286                status_printf_ln(s, color,
1287                                 _("You are currently rebasing branch '%s' on '%s'."),
1288                                 state->branch,
1289                                 state->onto);
1290        else
1291                status_printf_ln(s, color,
1292                                 _("You are currently rebasing."));
1293}
1294
1295static void show_rebase_in_progress(struct wt_status *s,
1296                                struct wt_status_state *state,
1297                                const char *color)
1298{
1299        struct stat st;
1300
1301        show_rebase_information(s, state, color);
1302        if (has_unmerged(s)) {
1303                print_rebase_state(s, state, color);
1304                if (s->hints) {
1305                        status_printf_ln(s, color,
1306                                _("  (fix conflicts and then run \"git rebase --continue\")"));
1307                        status_printf_ln(s, color,
1308                                _("  (use \"git rebase --skip\" to skip this patch)"));
1309                        status_printf_ln(s, color,
1310                                _("  (use \"git rebase --abort\" to check out the original branch)"));
1311                }
1312        } else if (state->rebase_in_progress || !stat(git_path_merge_msg(), &st)) {
1313                print_rebase_state(s, state, color);
1314                if (s->hints)
1315                        status_printf_ln(s, color,
1316                                _("  (all conflicts fixed: run \"git rebase --continue\")"));
1317        } else if (split_commit_in_progress(s)) {
1318                if (state->branch)
1319                        status_printf_ln(s, color,
1320                                         _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1321                                         state->branch,
1322                                         state->onto);
1323                else
1324                        status_printf_ln(s, color,
1325                                         _("You are currently splitting a commit during a rebase."));
1326                if (s->hints)
1327                        status_printf_ln(s, color,
1328                                _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1329        } else {
1330                if (state->branch)
1331                        status_printf_ln(s, color,
1332                                         _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1333                                         state->branch,
1334                                         state->onto);
1335                else
1336                        status_printf_ln(s, color,
1337                                         _("You are currently editing a commit during a rebase."));
1338                if (s->hints && !s->amend) {
1339                        status_printf_ln(s, color,
1340                                _("  (use \"git commit --amend\" to amend the current commit)"));
1341                        status_printf_ln(s, color,
1342                                _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1343                }
1344        }
1345        wt_longstatus_print_trailer(s);
1346}
1347
1348static void show_cherry_pick_in_progress(struct wt_status *s,
1349                                        struct wt_status_state *state,
1350                                        const char *color)
1351{
1352        status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1353                        find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1354        if (s->hints) {
1355                if (has_unmerged(s))
1356                        status_printf_ln(s, color,
1357                                _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1358                else
1359                        status_printf_ln(s, color,
1360                                _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1361                status_printf_ln(s, color,
1362                        _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1363        }
1364        wt_longstatus_print_trailer(s);
1365}
1366
1367static void show_revert_in_progress(struct wt_status *s,
1368                                        struct wt_status_state *state,
1369                                        const char *color)
1370{
1371        status_printf_ln(s, color, _("You are currently reverting commit %s."),
1372                         find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1373        if (s->hints) {
1374                if (has_unmerged(s))
1375                        status_printf_ln(s, color,
1376                                _("  (fix conflicts and run \"git revert --continue\")"));
1377                else
1378                        status_printf_ln(s, color,
1379                                _("  (all conflicts fixed: run \"git revert --continue\")"));
1380                status_printf_ln(s, color,
1381                        _("  (use \"git revert --abort\" to cancel the revert operation)"));
1382        }
1383        wt_longstatus_print_trailer(s);
1384}
1385
1386static void show_bisect_in_progress(struct wt_status *s,
1387                                struct wt_status_state *state,
1388                                const char *color)
1389{
1390        if (state->branch)
1391                status_printf_ln(s, color,
1392                                 _("You are currently bisecting, started from branch '%s'."),
1393                                 state->branch);
1394        else
1395                status_printf_ln(s, color,
1396                                 _("You are currently bisecting."));
1397        if (s->hints)
1398                status_printf_ln(s, color,
1399                        _("  (use \"git bisect reset\" to get back to the original branch)"));
1400        wt_longstatus_print_trailer(s);
1401}
1402
1403/*
1404 * Extract branch information from rebase/bisect
1405 */
1406static char *get_branch(const struct worktree *wt, const char *path)
1407{
1408        struct strbuf sb = STRBUF_INIT;
1409        struct object_id oid;
1410        const char *branch_name;
1411
1412        if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
1413                goto got_nothing;
1414
1415        while (sb.len && sb.buf[sb.len - 1] == '\n')
1416                strbuf_setlen(&sb, sb.len - 1);
1417        if (!sb.len)
1418                goto got_nothing;
1419        if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1420                strbuf_remove(&sb, 0, branch_name - sb.buf);
1421        else if (starts_with(sb.buf, "refs/"))
1422                ;
1423        else if (!get_oid_hex(sb.buf, &oid)) {
1424                strbuf_reset(&sb);
1425                strbuf_add_unique_abbrev(&sb, oid.hash, DEFAULT_ABBREV);
1426        } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1427                goto got_nothing;
1428        else                    /* bisect */
1429                ;
1430        return strbuf_detach(&sb, NULL);
1431
1432got_nothing:
1433        strbuf_release(&sb);
1434        return NULL;
1435}
1436
1437struct grab_1st_switch_cbdata {
1438        struct strbuf buf;
1439        struct object_id noid;
1440};
1441
1442static int grab_1st_switch(struct object_id *ooid, struct object_id *noid,
1443                           const char *email, timestamp_t timestamp, int tz,
1444                           const char *message, void *cb_data)
1445{
1446        struct grab_1st_switch_cbdata *cb = cb_data;
1447        const char *target = NULL, *end;
1448
1449        if (!skip_prefix(message, "checkout: moving from ", &message))
1450                return 0;
1451        target = strstr(message, " to ");
1452        if (!target)
1453                return 0;
1454        target += strlen(" to ");
1455        strbuf_reset(&cb->buf);
1456        oidcpy(&cb->noid, noid);
1457        end = strchrnul(target, '\n');
1458        strbuf_add(&cb->buf, target, end - target);
1459        if (!strcmp(cb->buf.buf, "HEAD")) {
1460                /* HEAD is relative. Resolve it to the right reflog entry. */
1461                strbuf_reset(&cb->buf);
1462                strbuf_add_unique_abbrev(&cb->buf, noid->hash, DEFAULT_ABBREV);
1463        }
1464        return 1;
1465}
1466
1467static void wt_status_get_detached_from(struct wt_status_state *state)
1468{
1469        struct grab_1st_switch_cbdata cb;
1470        struct commit *commit;
1471        struct object_id oid;
1472        char *ref = NULL;
1473
1474        strbuf_init(&cb.buf, 0);
1475        if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1476                strbuf_release(&cb.buf);
1477                return;
1478        }
1479
1480        if (dwim_ref(cb.buf.buf, cb.buf.len, &oid, &ref) == 1 &&
1481            /* sha1 is a commit? match without further lookup */
1482            (!oidcmp(&cb.noid, &oid) ||
1483             /* perhaps sha1 is a tag, try to dereference to a commit */
1484             ((commit = lookup_commit_reference_gently(&oid, 1)) != NULL &&
1485              !oidcmp(&cb.noid, &commit->object.oid)))) {
1486                const char *from = ref;
1487                if (!skip_prefix(from, "refs/tags/", &from))
1488                        skip_prefix(from, "refs/remotes/", &from);
1489                state->detached_from = xstrdup(from);
1490        } else
1491                state->detached_from =
1492                        xstrdup(find_unique_abbrev(cb.noid.hash, DEFAULT_ABBREV));
1493        hashcpy(state->detached_sha1, cb.noid.hash);
1494        state->detached_at = !get_oid("HEAD", &oid) &&
1495                             !hashcmp(oid.hash, state->detached_sha1);
1496
1497        free(ref);
1498        strbuf_release(&cb.buf);
1499}
1500
1501int wt_status_check_rebase(const struct worktree *wt,
1502                           struct wt_status_state *state)
1503{
1504        struct stat st;
1505
1506        if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
1507                if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
1508                        state->am_in_progress = 1;
1509                        if (!stat(worktree_git_path(wt, "rebase-apply/patch"), &st) && !st.st_size)
1510                                state->am_empty_patch = 1;
1511                } else {
1512                        state->rebase_in_progress = 1;
1513                        state->branch = get_branch(wt, "rebase-apply/head-name");
1514                        state->onto = get_branch(wt, "rebase-apply/onto");
1515                }
1516        } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
1517                if (!stat(worktree_git_path(wt, "rebase-merge/interactive"), &st))
1518                        state->rebase_interactive_in_progress = 1;
1519                else
1520                        state->rebase_in_progress = 1;
1521                state->branch = get_branch(wt, "rebase-merge/head-name");
1522                state->onto = get_branch(wt, "rebase-merge/onto");
1523        } else
1524                return 0;
1525        return 1;
1526}
1527
1528int wt_status_check_bisect(const struct worktree *wt,
1529                           struct wt_status_state *state)
1530{
1531        struct stat st;
1532
1533        if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
1534                state->bisect_in_progress = 1;
1535                state->branch = get_branch(wt, "BISECT_START");
1536                return 1;
1537        }
1538        return 0;
1539}
1540
1541void wt_status_get_state(struct wt_status_state *state,
1542                         int get_detached_from)
1543{
1544        struct stat st;
1545        struct object_id oid;
1546
1547        if (!stat(git_path_merge_head(), &st)) {
1548                state->merge_in_progress = 1;
1549        } else if (wt_status_check_rebase(NULL, state)) {
1550                ;               /* all set */
1551        } else if (!stat(git_path_cherry_pick_head(), &st) &&
1552                        !get_oid("CHERRY_PICK_HEAD", &oid)) {
1553                state->cherry_pick_in_progress = 1;
1554                hashcpy(state->cherry_pick_head_sha1, oid.hash);
1555        }
1556        wt_status_check_bisect(NULL, state);
1557        if (!stat(git_path_revert_head(), &st) &&
1558            !get_oid("REVERT_HEAD", &oid)) {
1559                state->revert_in_progress = 1;
1560                hashcpy(state->revert_head_sha1, oid.hash);
1561        }
1562
1563        if (get_detached_from)
1564                wt_status_get_detached_from(state);
1565}
1566
1567static void wt_longstatus_print_state(struct wt_status *s,
1568                                      struct wt_status_state *state)
1569{
1570        const char *state_color = color(WT_STATUS_HEADER, s);
1571        if (state->merge_in_progress)
1572                show_merge_in_progress(s, state, state_color);
1573        else if (state->am_in_progress)
1574                show_am_in_progress(s, state, state_color);
1575        else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1576                show_rebase_in_progress(s, state, state_color);
1577        else if (state->cherry_pick_in_progress)
1578                show_cherry_pick_in_progress(s, state, state_color);
1579        else if (state->revert_in_progress)
1580                show_revert_in_progress(s, state, state_color);
1581        if (state->bisect_in_progress)
1582                show_bisect_in_progress(s, state, state_color);
1583}
1584
1585static void wt_longstatus_print(struct wt_status *s)
1586{
1587        const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1588        const char *branch_status_color = color(WT_STATUS_HEADER, s);
1589        struct wt_status_state state;
1590
1591        memset(&state, 0, sizeof(state));
1592        wt_status_get_state(&state,
1593                            s->branch && !strcmp(s->branch, "HEAD"));
1594
1595        if (s->branch) {
1596                const char *on_what = _("On branch ");
1597                const char *branch_name = s->branch;
1598                if (!strcmp(branch_name, "HEAD")) {
1599                        branch_status_color = color(WT_STATUS_NOBRANCH, s);
1600                        if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1601                                if (state.rebase_interactive_in_progress)
1602                                        on_what = _("interactive rebase in progress; onto ");
1603                                else
1604                                        on_what = _("rebase in progress; onto ");
1605                                branch_name = state.onto;
1606                        } else if (state.detached_from) {
1607                                branch_name = state.detached_from;
1608                                if (state.detached_at)
1609                                        on_what = _("HEAD detached at ");
1610                                else
1611                                        on_what = _("HEAD detached from ");
1612                        } else {
1613                                branch_name = "";
1614                                on_what = _("Not currently on any branch.");
1615                        }
1616                } else
1617                        skip_prefix(branch_name, "refs/heads/", &branch_name);
1618                status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1619                status_printf_more(s, branch_status_color, "%s", on_what);
1620                status_printf_more(s, branch_color, "%s\n", branch_name);
1621                if (!s->is_initial)
1622                        wt_longstatus_print_tracking(s);
1623        }
1624
1625        wt_longstatus_print_state(s, &state);
1626        free(state.branch);
1627        free(state.onto);
1628        free(state.detached_from);
1629
1630        if (s->is_initial) {
1631                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1632                status_printf_ln(s, color(WT_STATUS_HEADER, s),
1633                                 s->commit_template
1634                                 ? _("Initial commit")
1635                                 : _("No commits yet"));
1636                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1637        }
1638
1639        wt_longstatus_print_updated(s);
1640        wt_longstatus_print_unmerged(s);
1641        wt_longstatus_print_changed(s);
1642        if (s->submodule_summary &&
1643            (!s->ignore_submodule_arg ||
1644             strcmp(s->ignore_submodule_arg, "all"))) {
1645                wt_longstatus_print_submodule_summary(s, 0);  /* staged */
1646                wt_longstatus_print_submodule_summary(s, 1);  /* unstaged */
1647        }
1648        if (s->show_untracked_files) {
1649                wt_longstatus_print_other(s, &s->untracked, _("Untracked files"), "add");
1650                if (s->show_ignored_mode)
1651                        wt_longstatus_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1652                if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1653                        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1654                        status_printf_ln(s, GIT_COLOR_NORMAL,
1655                                         _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1656                                           "may speed it up, but you have to be careful not to forget to add\n"
1657                                           "new files yourself (see 'git help status')."),
1658                                         s->untracked_in_ms / 1000.0);
1659                }
1660        } else if (s->commitable)
1661                status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1662                        s->hints
1663                        ? _(" (use -u option to show untracked files)") : "");
1664
1665        if (s->verbose)
1666                wt_longstatus_print_verbose(s);
1667        if (!s->commitable) {
1668                if (s->amend)
1669                        status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1670                else if (s->nowarn)
1671                        ; /* nothing */
1672                else if (s->workdir_dirty) {
1673                        if (s->hints)
1674                                printf(_("no changes added to commit "
1675                                         "(use \"git add\" and/or \"git commit -a\")\n"));
1676                        else
1677                                printf(_("no changes added to commit\n"));
1678                } else if (s->untracked.nr) {
1679                        if (s->hints)
1680                                printf(_("nothing added to commit but untracked files "
1681                                         "present (use \"git add\" to track)\n"));
1682                        else
1683                                printf(_("nothing added to commit but untracked files present\n"));
1684                } else if (s->is_initial) {
1685                        if (s->hints)
1686                                printf(_("nothing to commit (create/copy files "
1687                                         "and use \"git add\" to track)\n"));
1688                        else
1689                                printf(_("nothing to commit\n"));
1690                } else if (!s->show_untracked_files) {
1691                        if (s->hints)
1692                                printf(_("nothing to commit (use -u to show untracked files)\n"));
1693                        else
1694                                printf(_("nothing to commit\n"));
1695                } else
1696                        printf(_("nothing to commit, working tree clean\n"));
1697        }
1698        if(s->show_stash)
1699                wt_longstatus_print_stash_summary(s);
1700}
1701
1702static void wt_shortstatus_unmerged(struct string_list_item *it,
1703                           struct wt_status *s)
1704{
1705        struct wt_status_change_data *d = it->util;
1706        const char *how = "??";
1707
1708        switch (d->stagemask) {
1709        case 1: how = "DD"; break; /* both deleted */
1710        case 2: how = "AU"; break; /* added by us */
1711        case 3: how = "UD"; break; /* deleted by them */
1712        case 4: how = "UA"; break; /* added by them */
1713        case 5: how = "DU"; break; /* deleted by us */
1714        case 6: how = "AA"; break; /* both added */
1715        case 7: how = "UU"; break; /* both modified */
1716        }
1717        color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1718        if (s->null_termination) {
1719                fprintf(stdout, " %s%c", it->string, 0);
1720        } else {
1721                struct strbuf onebuf = STRBUF_INIT;
1722                const char *one;
1723                one = quote_path(it->string, s->prefix, &onebuf);
1724                printf(" %s\n", one);
1725                strbuf_release(&onebuf);
1726        }
1727}
1728
1729static void wt_shortstatus_status(struct string_list_item *it,
1730                         struct wt_status *s)
1731{
1732        struct wt_status_change_data *d = it->util;
1733
1734        if (d->index_status)
1735                color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1736        else
1737                putchar(' ');
1738        if (d->worktree_status)
1739                color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1740        else
1741                putchar(' ');
1742        putchar(' ');
1743        if (s->null_termination) {
1744                fprintf(stdout, "%s%c", it->string, 0);
1745                if (d->rename_source)
1746                        fprintf(stdout, "%s%c", d->rename_source, 0);
1747        } else {
1748                struct strbuf onebuf = STRBUF_INIT;
1749                const char *one;
1750
1751                if (d->rename_source) {
1752                        one = quote_path(d->rename_source, s->prefix, &onebuf);
1753                        if (*one != '"' && strchr(one, ' ') != NULL) {
1754                                putchar('"');
1755                                strbuf_addch(&onebuf, '"');
1756                                one = onebuf.buf;
1757                        }
1758                        printf("%s -> ", one);
1759                        strbuf_release(&onebuf);
1760                }
1761                one = quote_path(it->string, s->prefix, &onebuf);
1762                if (*one != '"' && strchr(one, ' ') != NULL) {
1763                        putchar('"');
1764                        strbuf_addch(&onebuf, '"');
1765                        one = onebuf.buf;
1766                }
1767                printf("%s\n", one);
1768                strbuf_release(&onebuf);
1769        }
1770}
1771
1772static void wt_shortstatus_other(struct string_list_item *it,
1773                                 struct wt_status *s, const char *sign)
1774{
1775        if (s->null_termination) {
1776                fprintf(stdout, "%s %s%c", sign, it->string, 0);
1777        } else {
1778                struct strbuf onebuf = STRBUF_INIT;
1779                const char *one;
1780                one = quote_path(it->string, s->prefix, &onebuf);
1781                color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1782                printf(" %s\n", one);
1783                strbuf_release(&onebuf);
1784        }
1785}
1786
1787static void wt_shortstatus_print_tracking(struct wt_status *s)
1788{
1789        struct branch *branch;
1790        const char *header_color = color(WT_STATUS_HEADER, s);
1791        const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1792        const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1793
1794        const char *base;
1795        char *short_base;
1796        const char *branch_name;
1797        int num_ours, num_theirs, sti;
1798        int upstream_is_gone = 0;
1799
1800        color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1801
1802        if (!s->branch)
1803                return;
1804        branch_name = s->branch;
1805
1806#define LABEL(string) (s->no_gettext ? (string) : _(string))
1807
1808        if (s->is_initial)
1809                color_fprintf(s->fp, header_color, LABEL(N_("No commits yet on ")));
1810
1811        if (!strcmp(s->branch, "HEAD")) {
1812                color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1813                              LABEL(N_("HEAD (no branch)")));
1814                goto conclude;
1815        }
1816
1817        skip_prefix(branch_name, "refs/heads/", &branch_name);
1818
1819        branch = branch_get(branch_name);
1820
1821        color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1822
1823        sti = stat_tracking_info(branch, &num_ours, &num_theirs, &base,
1824                                 s->ahead_behind_flags);
1825        if (sti < 0) {
1826                if (!base)
1827                        goto conclude;
1828
1829                upstream_is_gone = 1;
1830        }
1831
1832        short_base = shorten_unambiguous_ref(base, 0);
1833        color_fprintf(s->fp, header_color, "...");
1834        color_fprintf(s->fp, branch_color_remote, "%s", short_base);
1835        free(short_base);
1836
1837        if (!upstream_is_gone && !sti)
1838                goto conclude;
1839
1840        color_fprintf(s->fp, header_color, " [");
1841        if (upstream_is_gone) {
1842                color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1843        } else if (s->ahead_behind_flags == AHEAD_BEHIND_QUICK) {
1844                color_fprintf(s->fp, header_color, LABEL(N_("different")));
1845        } else if (!num_ours) {
1846                color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1847                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1848        } else if (!num_theirs) {
1849                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1850                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1851        } else {
1852                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1853                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1854                color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1855                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1856        }
1857
1858        color_fprintf(s->fp, header_color, "]");
1859 conclude:
1860        fputc(s->null_termination ? '\0' : '\n', s->fp);
1861}
1862
1863static void wt_shortstatus_print(struct wt_status *s)
1864{
1865        struct string_list_item *it;
1866
1867        if (s->show_branch)
1868                wt_shortstatus_print_tracking(s);
1869
1870        for_each_string_list_item(it, &s->change) {
1871                struct wt_status_change_data *d = it->util;
1872
1873                if (d->stagemask)
1874                        wt_shortstatus_unmerged(it, s);
1875                else
1876                        wt_shortstatus_status(it, s);
1877        }
1878        for_each_string_list_item(it, &s->untracked)
1879                wt_shortstatus_other(it, s, "??");
1880
1881        for_each_string_list_item(it, &s->ignored)
1882                wt_shortstatus_other(it, s, "!!");
1883}
1884
1885static void wt_porcelain_print(struct wt_status *s)
1886{
1887        s->use_color = 0;
1888        s->relative_paths = 0;
1889        s->prefix = NULL;
1890        s->no_gettext = 1;
1891        wt_shortstatus_print(s);
1892}
1893
1894/*
1895 * Print branch information for porcelain v2 output.  These lines
1896 * are printed when the '--branch' parameter is given.
1897 *
1898 *    # branch.oid <commit><eol>
1899 *    # branch.head <head><eol>
1900 *   [# branch.upstream <upstream><eol>
1901 *   [# branch.ab +<ahead> -<behind><eol>]]
1902 *
1903 *      <commit> ::= the current commit hash or the the literal
1904 *                   "(initial)" to indicate an initialized repo
1905 *                   with no commits.
1906 *
1907 *        <head> ::= <branch_name> the current branch name or
1908 *                   "(detached)" literal when detached head or
1909 *                   "(unknown)" when something is wrong.
1910 *
1911 *    <upstream> ::= the upstream branch name, when set.
1912 *
1913 *       <ahead> ::= integer ahead value or '?'.
1914 *
1915 *      <behind> ::= integer behind value or '?'.
1916 *
1917 * The end-of-line is defined by the -z flag.
1918 *
1919 *                 <eol> ::= NUL when -z,
1920 *                           LF when NOT -z.
1921 *
1922 * When an upstream is set and present, the 'branch.ab' line will
1923 * be printed with the ahead/behind counts for the branch and the
1924 * upstream.  When AHEAD_BEHIND_QUICK is requested and the branches
1925 * are different, '?' will be substituted for the actual count.
1926 */
1927static void wt_porcelain_v2_print_tracking(struct wt_status *s)
1928{
1929        struct branch *branch;
1930        const char *base;
1931        const char *branch_name;
1932        struct wt_status_state state;
1933        int ab_info, nr_ahead, nr_behind;
1934        char eol = s->null_termination ? '\0' : '\n';
1935
1936        memset(&state, 0, sizeof(state));
1937        wt_status_get_state(&state, s->branch && !strcmp(s->branch, "HEAD"));
1938
1939        fprintf(s->fp, "# branch.oid %s%c",
1940                        (s->is_initial ? "(initial)" : sha1_to_hex(s->sha1_commit)),
1941                        eol);
1942
1943        if (!s->branch)
1944                fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
1945        else {
1946                if (!strcmp(s->branch, "HEAD")) {
1947                        fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
1948
1949                        if (state.rebase_in_progress || state.rebase_interactive_in_progress)
1950                                branch_name = state.onto;
1951                        else if (state.detached_from)
1952                                branch_name = state.detached_from;
1953                        else
1954                                branch_name = "";
1955                } else {
1956                        branch_name = NULL;
1957                        skip_prefix(s->branch, "refs/heads/", &branch_name);
1958
1959                        fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
1960                }
1961
1962                /* Lookup stats on the upstream tracking branch, if set. */
1963                branch = branch_get(branch_name);
1964                base = NULL;
1965                ab_info = stat_tracking_info(branch, &nr_ahead, &nr_behind,
1966                                             &base, s->ahead_behind_flags);
1967                if (base) {
1968                        base = shorten_unambiguous_ref(base, 0);
1969                        fprintf(s->fp, "# branch.upstream %s%c", base, eol);
1970                        free((char *)base);
1971
1972                        if (ab_info > 0) {
1973                                /* different */
1974                                if (nr_ahead || nr_behind)
1975                                        fprintf(s->fp, "# branch.ab +%d -%d%c",
1976                                                nr_ahead, nr_behind, eol);
1977                                else
1978                                        fprintf(s->fp, "# branch.ab +? -?%c",
1979                                                eol);
1980                        } else if (!ab_info) {
1981                                /* same */
1982                                fprintf(s->fp, "# branch.ab +0 -0%c", eol);
1983                        }
1984                }
1985        }
1986
1987        free(state.branch);
1988        free(state.onto);
1989        free(state.detached_from);
1990}
1991
1992/*
1993 * Convert various submodule status values into a
1994 * fixed-length string of characters in the buffer provided.
1995 */
1996static void wt_porcelain_v2_submodule_state(
1997        struct wt_status_change_data *d,
1998        char sub[5])
1999{
2000        if (S_ISGITLINK(d->mode_head) ||
2001                S_ISGITLINK(d->mode_index) ||
2002                S_ISGITLINK(d->mode_worktree)) {
2003                sub[0] = 'S';
2004                sub[1] = d->new_submodule_commits ? 'C' : '.';
2005                sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
2006                sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
2007        } else {
2008                sub[0] = 'N';
2009                sub[1] = '.';
2010                sub[2] = '.';
2011                sub[3] = '.';
2012        }
2013        sub[4] = 0;
2014}
2015
2016/*
2017 * Fix-up changed entries before we print them.
2018 */
2019static void wt_porcelain_v2_fix_up_changed(
2020        struct string_list_item *it,
2021        struct wt_status *s)
2022{
2023        struct wt_status_change_data *d = it->util;
2024
2025        if (!d->index_status) {
2026                /*
2027                 * This entry is unchanged in the index (relative to the head).
2028                 * Therefore, the collect_updated_cb was never called for this
2029                 * entry (during the head-vs-index scan) and so the head column
2030                 * fields were never set.
2031                 *
2032                 * We must have data for the index column (from the
2033                 * index-vs-worktree scan (otherwise, this entry should not be
2034                 * in the list of changes)).
2035                 *
2036                 * Copy index column fields to the head column, so that our
2037                 * output looks complete.
2038                 */
2039                assert(d->mode_head == 0);
2040                d->mode_head = d->mode_index;
2041                oidcpy(&d->oid_head, &d->oid_index);
2042        }
2043
2044        if (!d->worktree_status) {
2045                /*
2046                 * This entry is unchanged in the worktree (relative to the index).
2047                 * Therefore, the collect_changed_cb was never called for this entry
2048                 * (during the index-vs-worktree scan) and so the worktree column
2049                 * fields were never set.
2050                 *
2051                 * We must have data for the index column (from the head-vs-index
2052                 * scan).
2053                 *
2054                 * Copy the index column fields to the worktree column so that
2055                 * our output looks complete.
2056                 *
2057                 * Note that we only have a mode field in the worktree column
2058                 * because the scan code tries really hard to not have to compute it.
2059                 */
2060                assert(d->mode_worktree == 0);
2061                d->mode_worktree = d->mode_index;
2062        }
2063}
2064
2065/*
2066 * Print porcelain v2 info for tracked entries with changes.
2067 */
2068static void wt_porcelain_v2_print_changed_entry(
2069        struct string_list_item *it,
2070        struct wt_status *s)
2071{
2072        struct wt_status_change_data *d = it->util;
2073        struct strbuf buf = STRBUF_INIT;
2074        struct strbuf buf_from = STRBUF_INIT;
2075        const char *path = NULL;
2076        const char *path_from = NULL;
2077        char key[3];
2078        char submodule_token[5];
2079        char sep_char, eol_char;
2080
2081        wt_porcelain_v2_fix_up_changed(it, s);
2082        wt_porcelain_v2_submodule_state(d, submodule_token);
2083
2084        key[0] = d->index_status ? d->index_status : '.';
2085        key[1] = d->worktree_status ? d->worktree_status : '.';
2086        key[2] = 0;
2087
2088        if (s->null_termination) {
2089                /*
2090                 * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
2091                 * A single NUL character separates them.
2092                 */
2093                sep_char = '\0';
2094                eol_char = '\0';
2095                path = it->string;
2096                path_from = d->rename_source;
2097        } else {
2098                /*
2099                 * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
2100                 * The source path is only present when necessary.
2101                 * A single TAB separates them (because paths can contain spaces
2102                 * which are not escaped and C-quoting does escape TAB characters).
2103                 */
2104                sep_char = '\t';
2105                eol_char = '\n';
2106                path = quote_path(it->string, s->prefix, &buf);
2107                if (d->rename_source)
2108                        path_from = quote_path(d->rename_source, s->prefix, &buf_from);
2109        }
2110
2111        if (path_from)
2112                fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
2113                                key, submodule_token,
2114                                d->mode_head, d->mode_index, d->mode_worktree,
2115                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2116                                d->rename_status, d->rename_score,
2117                                path, sep_char, path_from, eol_char);
2118        else
2119                fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
2120                                key, submodule_token,
2121                                d->mode_head, d->mode_index, d->mode_worktree,
2122                                oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2123                                path, eol_char);
2124
2125        strbuf_release(&buf);
2126        strbuf_release(&buf_from);
2127}
2128
2129/*
2130 * Print porcelain v2 status info for unmerged entries.
2131 */
2132static void wt_porcelain_v2_print_unmerged_entry(
2133        struct string_list_item *it,
2134        struct wt_status *s)
2135{
2136        struct wt_status_change_data *d = it->util;
2137        const struct cache_entry *ce;
2138        struct strbuf buf_index = STRBUF_INIT;
2139        const char *path_index = NULL;
2140        int pos, stage, sum;
2141        struct {
2142                int mode;
2143                struct object_id oid;
2144        } stages[3];
2145        char *key;
2146        char submodule_token[5];
2147        char unmerged_prefix = 'u';
2148        char eol_char = s->null_termination ? '\0' : '\n';
2149
2150        wt_porcelain_v2_submodule_state(d, submodule_token);
2151
2152        switch (d->stagemask) {
2153        case 1: key = "DD"; break; /* both deleted */
2154        case 2: key = "AU"; break; /* added by us */
2155        case 3: key = "UD"; break; /* deleted by them */
2156        case 4: key = "UA"; break; /* added by them */
2157        case 5: key = "DU"; break; /* deleted by us */
2158        case 6: key = "AA"; break; /* both added */
2159        case 7: key = "UU"; break; /* both modified */
2160        default:
2161                die("BUG: unhandled unmerged status %x", d->stagemask);
2162        }
2163
2164        /*
2165         * Disregard d.aux.porcelain_v2 data that we accumulated
2166         * for the head and index columns during the scans and
2167         * replace with the actual stage data.
2168         *
2169         * Note that this is a last-one-wins for each the individual
2170         * stage [123] columns in the event of multiple cache entries
2171         * for same stage.
2172         */
2173        memset(stages, 0, sizeof(stages));
2174        sum = 0;
2175        pos = cache_name_pos(it->string, strlen(it->string));
2176        assert(pos < 0);
2177        pos = -pos-1;
2178        while (pos < active_nr) {
2179                ce = active_cache[pos++];
2180                stage = ce_stage(ce);
2181                if (strcmp(ce->name, it->string) || !stage)
2182                        break;
2183                stages[stage - 1].mode = ce->ce_mode;
2184                oidcpy(&stages[stage - 1].oid, &ce->oid);
2185                sum |= (1 << (stage - 1));
2186        }
2187        if (sum != d->stagemask)
2188                die("BUG: observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
2189
2190        if (s->null_termination)
2191                path_index = it->string;
2192        else
2193                path_index = quote_path(it->string, s->prefix, &buf_index);
2194
2195        fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
2196                        unmerged_prefix, key, submodule_token,
2197                        stages[0].mode, /* stage 1 */
2198                        stages[1].mode, /* stage 2 */
2199                        stages[2].mode, /* stage 3 */
2200                        d->mode_worktree,
2201                        oid_to_hex(&stages[0].oid), /* stage 1 */
2202                        oid_to_hex(&stages[1].oid), /* stage 2 */
2203                        oid_to_hex(&stages[2].oid), /* stage 3 */
2204                        path_index,
2205                        eol_char);
2206
2207        strbuf_release(&buf_index);
2208}
2209
2210/*
2211 * Print porcelain V2 status info for untracked and ignored entries.
2212 */
2213static void wt_porcelain_v2_print_other(
2214        struct string_list_item *it,
2215        struct wt_status *s,
2216        char prefix)
2217{
2218        struct strbuf buf = STRBUF_INIT;
2219        const char *path;
2220        char eol_char;
2221
2222        if (s->null_termination) {
2223                path = it->string;
2224                eol_char = '\0';
2225        } else {
2226                path = quote_path(it->string, s->prefix, &buf);
2227                eol_char = '\n';
2228        }
2229
2230        fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
2231
2232        strbuf_release(&buf);
2233}
2234
2235/*
2236 * Print porcelain V2 status.
2237 *
2238 * [<v2_branch>]
2239 * [<v2_changed_items>]*
2240 * [<v2_unmerged_items>]*
2241 * [<v2_untracked_items>]*
2242 * [<v2_ignored_items>]*
2243 *
2244 */
2245static void wt_porcelain_v2_print(struct wt_status *s)
2246{
2247        struct wt_status_change_data *d;
2248        struct string_list_item *it;
2249        int i;
2250
2251        if (s->show_branch)
2252                wt_porcelain_v2_print_tracking(s);
2253
2254        for (i = 0; i < s->change.nr; i++) {
2255                it = &(s->change.items[i]);
2256                d = it->util;
2257                if (!d->stagemask)
2258                        wt_porcelain_v2_print_changed_entry(it, s);
2259        }
2260
2261        for (i = 0; i < s->change.nr; i++) {
2262                it = &(s->change.items[i]);
2263                d = it->util;
2264                if (d->stagemask)
2265                        wt_porcelain_v2_print_unmerged_entry(it, s);
2266        }
2267
2268        for (i = 0; i < s->untracked.nr; i++) {
2269                it = &(s->untracked.items[i]);
2270                wt_porcelain_v2_print_other(it, s, '?');
2271        }
2272
2273        for (i = 0; i < s->ignored.nr; i++) {
2274                it = &(s->ignored.items[i]);
2275                wt_porcelain_v2_print_other(it, s, '!');
2276        }
2277}
2278
2279void wt_status_print(struct wt_status *s)
2280{
2281        switch (s->status_format) {
2282        case STATUS_FORMAT_SHORT:
2283                wt_shortstatus_print(s);
2284                break;
2285        case STATUS_FORMAT_PORCELAIN:
2286                wt_porcelain_print(s);
2287                break;
2288        case STATUS_FORMAT_PORCELAIN_V2:
2289                wt_porcelain_v2_print(s);
2290                break;
2291        case STATUS_FORMAT_UNSPECIFIED:
2292                die("BUG: finalize_deferred_config() should have been called");
2293                break;
2294        case STATUS_FORMAT_NONE:
2295        case STATUS_FORMAT_LONG:
2296                wt_longstatus_print(s);
2297                break;
2298        }
2299}
2300
2301/**
2302 * Returns 1 if there are unstaged changes, 0 otherwise.
2303 */
2304int has_unstaged_changes(int ignore_submodules)
2305{
2306        struct rev_info rev_info;
2307        int result;
2308
2309        init_revisions(&rev_info, NULL);
2310        if (ignore_submodules) {
2311                rev_info.diffopt.flags.ignore_submodules = 1;
2312                rev_info.diffopt.flags.override_submodule_config = 1;
2313        }
2314        rev_info.diffopt.flags.quick = 1;
2315        diff_setup_done(&rev_info.diffopt);
2316        result = run_diff_files(&rev_info, 0);
2317        return diff_result_code(&rev_info.diffopt, result);
2318}
2319
2320/**
2321 * Returns 1 if there are uncommitted changes, 0 otherwise.
2322 */
2323int has_uncommitted_changes(int ignore_submodules)
2324{
2325        struct rev_info rev_info;
2326        int result;
2327
2328        if (is_cache_unborn())
2329                return 0;
2330
2331        init_revisions(&rev_info, NULL);
2332        if (ignore_submodules)
2333                rev_info.diffopt.flags.ignore_submodules = 1;
2334        rev_info.diffopt.flags.quick = 1;
2335        add_head_to_pending(&rev_info);
2336        diff_setup_done(&rev_info.diffopt);
2337        result = run_diff_index(&rev_info, 1);
2338        return diff_result_code(&rev_info.diffopt, result);
2339}
2340
2341/**
2342 * If the work tree has unstaged or uncommitted changes, dies with the
2343 * appropriate message.
2344 */
2345int require_clean_work_tree(const char *action, const char *hint, int ignore_submodules, int gently)
2346{
2347        struct lock_file lock_file = LOCK_INIT;
2348        int err = 0, fd;
2349
2350        fd = hold_locked_index(&lock_file, 0);
2351        refresh_cache(REFRESH_QUIET);
2352        if (0 <= fd)
2353                update_index_if_able(&the_index, &lock_file);
2354        rollback_lock_file(&lock_file);
2355
2356        if (has_unstaged_changes(ignore_submodules)) {
2357                /* TRANSLATORS: the action is e.g. "pull with rebase" */
2358                error(_("cannot %s: You have unstaged changes."), _(action));
2359                err = 1;
2360        }
2361
2362        if (has_uncommitted_changes(ignore_submodules)) {
2363                if (err)
2364                        error(_("additionally, your index contains uncommitted changes."));
2365                else
2366                        error(_("cannot %s: Your index contains uncommitted changes."),
2367                              _(action));
2368                err = 1;
2369        }
2370
2371        if (err) {
2372                if (hint)
2373                        error("%s", hint);
2374                if (!gently)
2375                        exit(128);
2376        }
2377
2378        return err;
2379}