wt-status.c

   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
  21 static const char cut_line[] =
  22 "------------------------ >8 ------------------------\n";
  23
  24 static 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
  36 static 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
  46 static 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
  92 void 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
 102 void 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
 112 static 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
 122 void wt_status_prepare(struct repository *r, struct wt_status *s)
 123 {
 124         memset(s, 0, sizeof(*s));
 125         s->repo = r;
 126         memcpy(s->color_palette, default_wt_status_colors,
 127                sizeof(default_wt_status_colors));
 128         s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 129         s->use_color = -1;
 130         s->relative_paths = 1;
 131         s->branch = resolve_refdup("HEAD", 0, NULL, NULL);
 132         s->reference = "HEAD";
 133         s->fp = stdout;
 134         s->index_file = get_index_file();
 135         s->change.strdup_strings = 1;
 136         s->untracked.strdup_strings = 1;
 137         s->ignored.strdup_strings = 1;
 138         s->show_branch = -1;  /* unspecified */
 139         s->show_stash = 0;
 140         s->ahead_behind_flags = AHEAD_BEHIND_UNSPECIFIED;
 141         s->display_comment_prefix = 0;
 142         s->detect_rename = -1;
 143         s->rename_score = -1;
 144         s->rename_limit = -1;
 145 }
 146
 147 static void wt_longstatus_print_unmerged_header(struct wt_status *s)
 148 {
 149         int i;
 150         int del_mod_conflict = 0;
 151         int both_deleted = 0;
 152         int not_deleted = 0;
 153         const char *c = color(WT_STATUS_HEADER, s);
 154
 155         status_printf_ln(s, c, _("Unmerged paths:"));
 156
 157         for (i = 0; i < s->change.nr; i++) {
 158                 struct string_list_item *it = &(s->change.items[i]);
 159                 struct wt_status_change_data *d = it->util;
 160
 161                 switch (d->stagemask) {
 162                 case 0:
 163                         break;
 164                 case 1:
 165                         both_deleted = 1;
 166                         break;
 167                 case 3:
 168                 case 5:
 169                         del_mod_conflict = 1;
 170                         break;
 171                 default:
 172                         not_deleted = 1;
 173                         break;
 174                 }
 175         }
 176
 177         if (!s->hints)
 178                 return;
 179         if (s->whence != FROM_COMMIT)
 180                 ;
 181         else if (!s->is_initial)
 182                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 183         else
 184                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 185
 186         if (!both_deleted) {
 187                 if (!del_mod_conflict)
 188                         status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
 189                 else
 190                         status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 191         } else if (!del_mod_conflict && !not_deleted) {
 192                 status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
 193         } else {
 194                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 195         }
 196         status_printf_ln(s, c, "%s", "");
 197 }
 198
 199 static void wt_longstatus_print_cached_header(struct wt_status *s)
 200 {
 201         const char *c = color(WT_STATUS_HEADER, s);
 202
 203         status_printf_ln(s, c, _("Changes to be committed:"));
 204         if (!s->hints)
 205                 return;
 206         if (s->whence != FROM_COMMIT)
 207                 ; /* NEEDSWORK: use "git reset --unresolve"??? */
 208         else if (!s->is_initial)
 209                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 210         else
 211                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 212         status_printf_ln(s, c, "%s", "");
 213 }
 214
 215 static void wt_longstatus_print_dirty_header(struct wt_status *s,
 216                                              int has_deleted,
 217                                              int has_dirty_submodules)
 218 {
 219         const char *c = color(WT_STATUS_HEADER, s);
 220
 221         status_printf_ln(s, c, _("Changes not staged for commit:"));
 222         if (!s->hints)
 223                 return;
 224         if (!has_deleted)
 225                 status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
 226         else
 227                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
 228         status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
 229         if (has_dirty_submodules)
 230                 status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
 231         status_printf_ln(s, c, "%s", "");
 232 }
 233
 234 static void wt_longstatus_print_other_header(struct wt_status *s,
 235                                              const char *what,
 236                                              const char *how)
 237 {
 238         const char *c = color(WT_STATUS_HEADER, s);
 239         status_printf_ln(s, c, "%s:", what);
 240         if (!s->hints)
 241                 return;
 242         status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
 243         status_printf_ln(s, c, "%s", "");
 244 }
 245
 246 static void wt_longstatus_print_trailer(struct wt_status *s)
 247 {
 248         status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 249 }
 250
 251 #define quote_path quote_path_relative
 252
 253 static const char *wt_status_unmerged_status_string(int stagemask)
 254 {
 255         switch (stagemask) {
 256         case 1:
 257                 return _("both deleted:");
 258         case 2:
 259                 return _("added by us:");
 260         case 3:
 261                 return _("deleted by them:");
 262         case 4:
 263                 return _("added by them:");
 264         case 5:
 265                 return _("deleted by us:");
 266         case 6:
 267                 return _("both added:");
 268         case 7:
 269                 return _("both modified:");
 270         default:
 271                 BUG("unhandled unmerged status %x", stagemask);
 272         }
 273 }
 274
 275 static const char *wt_status_diff_status_string(int status)
 276 {
 277         switch (status) {
 278         case DIFF_STATUS_ADDED:
 279                 return _("new file:");
 280         case DIFF_STATUS_COPIED:
 281                 return _("copied:");
 282         case DIFF_STATUS_DELETED:
 283                 return _("deleted:");
 284         case DIFF_STATUS_MODIFIED:
 285                 return _("modified:");
 286         case DIFF_STATUS_RENAMED:
 287                 return _("renamed:");
 288         case DIFF_STATUS_TYPE_CHANGED:
 289                 return _("typechange:");
 290         case DIFF_STATUS_UNKNOWN:
 291                 return _("unknown:");
 292         case DIFF_STATUS_UNMERGED:
 293                 return _("unmerged:");
 294         default:
 295                 return NULL;
 296         }
 297 }
 298
 299 static int maxwidth(const char *(*label)(int), int minval, int maxval)
 300 {
 301         int result = 0, i;
 302
 303         for (i = minval; i <= maxval; i++) {
 304                 const char *s = label(i);
 305                 int len = s ? utf8_strwidth(s) : 0;
 306                 if (len > result)
 307                         result = len;
 308         }
 309         return result;
 310 }
 311
 312 static void wt_longstatus_print_unmerged_data(struct wt_status *s,
 313                                               struct string_list_item *it)
 314 {
 315         const char *c = color(WT_STATUS_UNMERGED, s);
 316         struct wt_status_change_data *d = it->util;
 317         struct strbuf onebuf = STRBUF_INIT;
 318         static char *padding;
 319         static int label_width;
 320         const char *one, *how;
 321         int len;
 322
 323         if (!padding) {
 324                 label_width = maxwidth(wt_status_unmerged_status_string, 1, 7);
 325                 label_width += strlen(" ");
 326                 padding = xmallocz(label_width);
 327                 memset(padding, ' ', label_width);
 328         }
 329
 330         one = quote_path(it->string, s->prefix, &onebuf);
 331         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 332
 333         how = wt_status_unmerged_status_string(d->stagemask);
 334         len = label_width - utf8_strwidth(how);
 335         status_printf_more(s, c, "%s%.*s%s\n", how, len, padding, one);
 336         strbuf_release(&onebuf);
 337 }
 338
 339 static void wt_longstatus_print_change_data(struct wt_status *s,
 340                                             int change_type,
 341                                             struct string_list_item *it)
 342 {
 343         struct wt_status_change_data *d = it->util;
 344         const char *c = color(change_type, s);
 345         int status;
 346         char *one_name;
 347         char *two_name;
 348         const char *one, *two;
 349         struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
 350         struct strbuf extra = STRBUF_INIT;
 351         static char *padding;
 352         static int label_width;
 353         const char *what;
 354         int len;
 355
 356         if (!padding) {
 357                 /* If DIFF_STATUS_* uses outside the range [A..Z], we're in trouble */
 358                 label_width = maxwidth(wt_status_diff_status_string, 'A', 'Z');
 359                 label_width += strlen(" ");
 360                 padding = xmallocz(label_width);
 361                 memset(padding, ' ', label_width);
 362         }
 363
 364         one_name = two_name = it->string;
 365         switch (change_type) {
 366         case WT_STATUS_UPDATED:
 367                 status = d->index_status;
 368                 break;
 369         case WT_STATUS_CHANGED:
 370                 if (d->new_submodule_commits || d->dirty_submodule) {
 371                         strbuf_addstr(&extra, " (");
 372                         if (d->new_submodule_commits)
 373                                 strbuf_addstr(&extra, _("new commits, "));
 374                         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 375                                 strbuf_addstr(&extra, _("modified content, "));
 376                         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 377                                 strbuf_addstr(&extra, _("untracked content, "));
 378                         strbuf_setlen(&extra, extra.len - 2);
 379                         strbuf_addch(&extra, ')');
 380                 }
 381                 status = d->worktree_status;
 382                 break;
 383         default:
 384                 BUG("unhandled change_type %d in wt_longstatus_print_change_data",
 385                     change_type);
 386         }
 387
 388         /*
 389          * Only pick up the rename it's relevant. If the rename is for
 390          * the changed section and we're printing the updated section,
 391          * ignore it.
 392          */
 393         if (d->rename_status == status)
 394                 one_name = d->rename_source;
 395
 396         one = quote_path(one_name, s->prefix, &onebuf);
 397         two = quote_path(two_name, s->prefix, &twobuf);
 398
 399         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 400         what = wt_status_diff_status_string(status);
 401         if (!what)
 402                 BUG("unhandled diff status %c", status);
 403         len = label_width - utf8_strwidth(what);
 404         assert(len >= 0);
 405         if (one_name != two_name)
 406                 status_printf_more(s, c, "%s%.*s%s -> %s",
 407                                    what, len, padding, one, two);
 408         else
 409                 status_printf_more(s, c, "%s%.*s%s",
 410                                    what, len, padding, one);
 411         if (extra.len) {
 412                 status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 413                 strbuf_release(&extra);
 414         }
 415         status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 416         strbuf_release(&onebuf);
 417         strbuf_release(&twobuf);
 418 }
 419
 420 static char short_submodule_status(struct wt_status_change_data *d)
 421 {
 422         if (d->new_submodule_commits)
 423                 return 'M';
 424         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 425                 return 'm';
 426         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 427                 return '?';
 428         return d->worktree_status;
 429 }
 430
 431 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 432                                          struct diff_options *options,
 433                                          void *data)
 434 {
 435         struct wt_status *s = data;
 436         int i;
 437
 438         if (!q->nr)
 439                 return;
 440         s->workdir_dirty = 1;
 441         for (i = 0; i < q->nr; i++) {
 442                 struct diff_filepair *p;
 443                 struct string_list_item *it;
 444                 struct wt_status_change_data *d;
 445
 446                 p = q->queue[i];
 447                 it = string_list_insert(&s->change, p->two->path);
 448                 d = it->util;
 449                 if (!d) {
 450                         d = xcalloc(1, sizeof(*d));
 451                         it->util = d;
 452                 }
 453                 if (!d->worktree_status)
 454                         d->worktree_status = p->status;
 455                 if (S_ISGITLINK(p->two->mode)) {
 456                         d->dirty_submodule = p->two->dirty_submodule;
 457                         d->new_submodule_commits = !oideq(&p->one->oid,
 458                                                           &p->two->oid);
 459                         if (s->status_format == STATUS_FORMAT_SHORT)
 460                                 d->worktree_status = short_submodule_status(d);
 461                 }
 462
 463                 switch (p->status) {
 464                 case DIFF_STATUS_ADDED:
 465                         d->mode_worktree = p->two->mode;
 466                         break;
 467
 468                 case DIFF_STATUS_DELETED:
 469                         d->mode_index = p->one->mode;
 470                         oidcpy(&d->oid_index, &p->one->oid);
 471                         /* mode_worktree is zero for a delete. */
 472                         break;
 473
 474                 case DIFF_STATUS_COPIED:
 475                 case DIFF_STATUS_RENAMED:
 476                         if (d->rename_status)
 477                                 BUG("multiple renames on the same target? how?");
 478                         d->rename_source = xstrdup(p->one->path);
 479                         d->rename_score = p->score * 100 / MAX_SCORE;
 480                         d->rename_status = p->status;
 481                         /* fallthru */
 482                 case DIFF_STATUS_MODIFIED:
 483                 case DIFF_STATUS_TYPE_CHANGED:
 484                 case DIFF_STATUS_UNMERGED:
 485                         d->mode_index = p->one->mode;
 486                         d->mode_worktree = p->two->mode;
 487                         oidcpy(&d->oid_index, &p->one->oid);
 488                         break;
 489
 490                 default:
 491                         BUG("unhandled diff-files status '%c'", p->status);
 492                         break;
 493                 }
 494
 495         }
 496 }
 497
 498 static int unmerged_mask(struct index_state *istate, const char *path)
 499 {
 500         int pos, mask;
 501         const struct cache_entry *ce;
 502
 503         pos = index_name_pos(istate, path, strlen(path));
 504         if (0 <= pos)
 505                 return 0;
 506
 507         mask = 0;
 508         pos = -pos-1;
 509         while (pos < istate->cache_nr) {
 510                 ce = istate->cache[pos++];
 511                 if (strcmp(ce->name, path) || !ce_stage(ce))
 512                         break;
 513                 mask |= (1 << (ce_stage(ce) - 1));
 514         }
 515         return mask;
 516 }
 517
 518 static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 519                                          struct diff_options *options,
 520                                          void *data)
 521 {
 522         struct wt_status *s = data;
 523         int i;
 524
 525         for (i = 0; i < q->nr; i++) {
 526                 struct diff_filepair *p;
 527                 struct string_list_item *it;
 528                 struct wt_status_change_data *d;
 529
 530                 p = q->queue[i];
 531                 it = string_list_insert(&s->change, p->two->path);
 532                 d = it->util;
 533                 if (!d) {
 534                         d = xcalloc(1, sizeof(*d));
 535                         it->util = d;
 536                 }
 537                 if (!d->index_status)
 538                         d->index_status = p->status;
 539                 switch (p->status) {
 540                 case DIFF_STATUS_ADDED:
 541                         /* Leave {mode,oid}_head zero for an add. */
 542                         d->mode_index = p->two->mode;
 543                         oidcpy(&d->oid_index, &p->two->oid);
 544                         s->committable = 1;
 545                         break;
 546                 case DIFF_STATUS_DELETED:
 547                         d->mode_head = p->one->mode;
 548                         oidcpy(&d->oid_head, &p->one->oid);
 549                         s->committable = 1;
 550                         /* Leave {mode,oid}_index zero for a delete. */
 551                         break;
 552
 553                 case DIFF_STATUS_COPIED:
 554                 case DIFF_STATUS_RENAMED:
 555                         if (d->rename_status)
 556                                 BUG("multiple renames on the same target? how?");
 557                         d->rename_source = xstrdup(p->one->path);
 558                         d->rename_score = p->score * 100 / MAX_SCORE;
 559                         d->rename_status = p->status;
 560                         /* fallthru */
 561                 case DIFF_STATUS_MODIFIED:
 562                 case DIFF_STATUS_TYPE_CHANGED:
 563                         d->mode_head = p->one->mode;
 564                         d->mode_index = p->two->mode;
 565                         oidcpy(&d->oid_head, &p->one->oid);
 566                         oidcpy(&d->oid_index, &p->two->oid);
 567                         s->committable = 1;
 568                         break;
 569                 case DIFF_STATUS_UNMERGED:
 570                         d->stagemask = unmerged_mask(s->repo->index,
 571                                                      p->two->path);
 572                         /*
 573                          * Don't bother setting {mode,oid}_{head,index} since the print
 574                          * code will output the stage values directly and not use the
 575                          * values in these fields.
 576                          */
 577                         break;
 578
 579                 default:
 580                         BUG("unhandled diff-index status '%c'", p->status);
 581                         break;
 582                 }
 583         }
 584 }
 585
 586 static void wt_status_collect_changes_worktree(struct wt_status *s)
 587 {
 588         struct rev_info rev;
 589
 590         repo_init_revisions(s->repo, &rev, NULL);
 591         setup_revisions(0, NULL, &rev, NULL);
 592         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 593         rev.diffopt.flags.dirty_submodules = 1;
 594         rev.diffopt.ita_invisible_in_index = 1;
 595         if (!s->show_untracked_files)
 596                 rev.diffopt.flags.ignore_untracked_in_submodules = 1;
 597         if (s->ignore_submodule_arg) {
 598                 rev.diffopt.flags.override_submodule_config = 1;
 599                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 600         }
 601         rev.diffopt.format_callback = wt_status_collect_changed_cb;
 602         rev.diffopt.format_callback_data = s;
 603         rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
 604         rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
 605         rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
 606         copy_pathspec(&rev.prune_data, &s->pathspec);
 607         run_diff_files(&rev, 0);
 608 }
 609
 610 static void wt_status_collect_changes_index(struct wt_status *s)
 611 {
 612         struct rev_info rev;
 613         struct setup_revision_opt opt;
 614
 615         repo_init_revisions(s->repo, &rev, NULL);
 616         memset(&opt, 0, sizeof(opt));
 617         opt.def = s->is_initial ? empty_tree_oid_hex() : s->reference;
 618         setup_revisions(0, NULL, &rev, &opt);
 619
 620         rev.diffopt.flags.override_submodule_config = 1;
 621         rev.diffopt.ita_invisible_in_index = 1;
 622         if (s->ignore_submodule_arg) {
 623                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 624         } else {
 625                 /*
 626                  * Unless the user did explicitly request a submodule ignore
 627                  * mode by passing a command line option we do not ignore any
 628                  * changed submodule SHA-1s when comparing index and HEAD, no
 629                  * matter what is configured. Otherwise the user won't be
 630                  * shown any submodules she manually added (and which are
 631                  * staged to be committed), which would be really confusing.
 632                  */
 633                 handle_ignore_submodules_arg(&rev.diffopt, "dirty");
 634         }
 635
 636         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 637         rev.diffopt.format_callback = wt_status_collect_updated_cb;
 638         rev.diffopt.format_callback_data = s;
 639         rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
 640         rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
 641         rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
 642         copy_pathspec(&rev.prune_data, &s->pathspec);
 643         run_diff_index(&rev, 1);
 644 }
 645
 646 static void wt_status_collect_changes_initial(struct wt_status *s)
 647 {
 648         struct index_state *istate = s->repo->index;
 649         int i;
 650
 651         for (i = 0; i < istate->cache_nr; i++) {
 652                 struct string_list_item *it;
 653                 struct wt_status_change_data *d;
 654                 const struct cache_entry *ce = istate->cache[i];
 655
 656                 if (!ce_path_match(istate, ce, &s->pathspec, NULL))
 657                         continue;
 658                 if (ce_intent_to_add(ce))
 659                         continue;
 660                 it = string_list_insert(&s->change, ce->name);
 661                 d = it->util;
 662                 if (!d) {
 663                         d = xcalloc(1, sizeof(*d));
 664                         it->util = d;
 665                 }
 666                 if (ce_stage(ce)) {
 667                         d->index_status = DIFF_STATUS_UNMERGED;
 668                         d->stagemask |= (1 << (ce_stage(ce) - 1));
 669                         /*
 670                          * Don't bother setting {mode,oid}_{head,index} since the print
 671                          * code will output the stage values directly and not use the
 672                          * values in these fields.
 673                          */
 674                         s->committable = 1;
 675                 } else {
 676                         d->index_status = DIFF_STATUS_ADDED;
 677                         /* Leave {mode,oid}_head zero for adds. */
 678                         d->mode_index = ce->ce_mode;
 679                         oidcpy(&d->oid_index, &ce->oid);
 680                         s->committable = 1;
 681                 }
 682         }
 683 }
 684
 685 static void wt_status_collect_untracked(struct wt_status *s)
 686 {
 687         int i;
 688         struct dir_struct dir;
 689         uint64_t t_begin = getnanotime();
 690         struct index_state *istate = s->repo->index;
 691
 692         if (!s->show_untracked_files)
 693                 return;
 694
 695         memset(&dir, 0, sizeof(dir));
 696         if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 697                 dir.flags |=
 698                         DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 699         if (s->show_ignored_mode) {
 700                 dir.flags |= DIR_SHOW_IGNORED_TOO;
 701
 702                 if (s->show_ignored_mode == SHOW_MATCHING_IGNORED)
 703                         dir.flags |= DIR_SHOW_IGNORED_TOO_MODE_MATCHING;
 704         } else {
 705                 dir.untracked = istate->untracked;
 706         }
 707
 708         setup_standard_excludes(&dir);
 709
 710         fill_directory(&dir, istate, &s->pathspec);
 711
 712         for (i = 0; i < dir.nr; i++) {
 713                 struct dir_entry *ent = dir.entries[i];
 714                 if (index_name_is_other(istate, ent->name, ent->len) &&
 715                     dir_path_match(istate, ent, &s->pathspec, 0, NULL))
 716                         string_list_insert(&s->untracked, ent->name);
 717                 free(ent);
 718         }
 719
 720         for (i = 0; i < dir.ignored_nr; i++) {
 721                 struct dir_entry *ent = dir.ignored[i];
 722                 if (index_name_is_other(istate, ent->name, ent->len) &&
 723                     dir_path_match(istate, ent, &s->pathspec, 0, NULL))
 724                         string_list_insert(&s->ignored, ent->name);
 725                 free(ent);
 726         }
 727
 728         free(dir.entries);
 729         free(dir.ignored);
 730         clear_directory(&dir);
 731
 732         if (advice_status_u_option)
 733                 s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 734 }
 735
 736 static int has_unmerged(struct wt_status *s)
 737 {
 738         int i;
 739
 740         for (i = 0; i < s->change.nr; i++) {
 741                 struct wt_status_change_data *d;
 742                 d = s->change.items[i].util;
 743                 if (d->stagemask)
 744                         return 1;
 745         }
 746         return 0;
 747 }
 748
 749 void wt_status_collect(struct wt_status *s)
 750 {
 751         wt_status_collect_changes_worktree(s);
 752         if (s->is_initial)
 753                 wt_status_collect_changes_initial(s);
 754         else
 755                 wt_status_collect_changes_index(s);
 756         wt_status_collect_untracked(s);
 757
 758         wt_status_get_state(s->repo, &s->state, s->branch && !strcmp(s->branch, "HEAD"));
 759         if (s->state.merge_in_progress && !has_unmerged(s))
 760                 s->committable = 1;
 761 }
 762
 763 void wt_status_collect_free_buffers(struct wt_status *s)
 764 {
 765         free(s->state.branch);
 766         free(s->state.onto);
 767         free(s->state.detached_from);
 768 }
 769
 770 static void wt_longstatus_print_unmerged(struct wt_status *s)
 771 {
 772         int shown_header = 0;
 773         int i;
 774
 775         for (i = 0; i < s->change.nr; i++) {
 776                 struct wt_status_change_data *d;
 777                 struct string_list_item *it;
 778                 it = &(s->change.items[i]);
 779                 d = it->util;
 780                 if (!d->stagemask)
 781                         continue;
 782                 if (!shown_header) {
 783                         wt_longstatus_print_unmerged_header(s);
 784                         shown_header = 1;
 785                 }
 786                 wt_longstatus_print_unmerged_data(s, it);
 787         }
 788         if (shown_header)
 789                 wt_longstatus_print_trailer(s);
 790
 791 }
 792
 793 static void wt_longstatus_print_updated(struct wt_status *s)
 794 {
 795         int shown_header = 0;
 796         int i;
 797
 798         for (i = 0; i < s->change.nr; i++) {
 799                 struct wt_status_change_data *d;
 800                 struct string_list_item *it;
 801                 it = &(s->change.items[i]);
 802                 d = it->util;
 803                 if (!d->index_status ||
 804                     d->index_status == DIFF_STATUS_UNMERGED)
 805                         continue;
 806                 if (!shown_header) {
 807                         wt_longstatus_print_cached_header(s);
 808                         shown_header = 1;
 809                 }
 810                 wt_longstatus_print_change_data(s, WT_STATUS_UPDATED, it);
 811         }
 812         if (shown_header)
 813                 wt_longstatus_print_trailer(s);
 814 }
 815
 816 /*
 817  * -1 : has delete
 818  *  0 : no change
 819  *  1 : some change but no delete
 820  */
 821 static int wt_status_check_worktree_changes(struct wt_status *s,
 822                                              int *dirty_submodules)
 823 {
 824         int i;
 825         int changes = 0;
 826
 827         *dirty_submodules = 0;
 828
 829         for (i = 0; i < s->change.nr; i++) {
 830                 struct wt_status_change_data *d;
 831                 d = s->change.items[i].util;
 832                 if (!d->worktree_status ||
 833                     d->worktree_status == DIFF_STATUS_UNMERGED)
 834                         continue;
 835                 if (!changes)
 836                         changes = 1;
 837                 if (d->dirty_submodule)
 838                         *dirty_submodules = 1;
 839                 if (d->worktree_status == DIFF_STATUS_DELETED)
 840                         changes = -1;
 841         }
 842         return changes;
 843 }
 844
 845 static void wt_longstatus_print_changed(struct wt_status *s)
 846 {
 847         int i, dirty_submodules;
 848         int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 849
 850         if (!worktree_changes)
 851                 return;
 852
 853         wt_longstatus_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 854
 855         for (i = 0; i < s->change.nr; i++) {
 856                 struct wt_status_change_data *d;
 857                 struct string_list_item *it;
 858                 it = &(s->change.items[i]);
 859                 d = it->util;
 860                 if (!d->worktree_status ||
 861                     d->worktree_status == DIFF_STATUS_UNMERGED)
 862                         continue;
 863                 wt_longstatus_print_change_data(s, WT_STATUS_CHANGED, it);
 864         }
 865         wt_longstatus_print_trailer(s);
 866 }
 867
 868 static int stash_count_refs(struct object_id *ooid, struct object_id *noid,
 869                             const char *email, timestamp_t timestamp, int tz,
 870                             const char *message, void *cb_data)
 871 {
 872         int *c = cb_data;
 873         (*c)++;
 874         return 0;
 875 }
 876
 877 static void wt_longstatus_print_stash_summary(struct wt_status *s)
 878 {
 879         int stash_count = 0;
 880
 881         for_each_reflog_ent("refs/stash", stash_count_refs, &stash_count);
 882         if (stash_count > 0)
 883                 status_printf_ln(s, GIT_COLOR_NORMAL,
 884                                  Q_("Your stash currently has %d entry",
 885                                     "Your stash currently has %d entries", stash_count),
 886                                  stash_count);
 887 }
 888
 889 static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncommitted)
 890 {
 891         struct child_process sm_summary = CHILD_PROCESS_INIT;
 892         struct strbuf cmd_stdout = STRBUF_INIT;
 893         struct strbuf summary = STRBUF_INIT;
 894         char *summary_content;
 895
 896         argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 897                          s->index_file);
 898
 899         argv_array_push(&sm_summary.args, "submodule");
 900         argv_array_push(&sm_summary.args, "summary");
 901         argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 902         argv_array_push(&sm_summary.args, "--for-status");
 903         argv_array_push(&sm_summary.args, "--summary-limit");
 904         argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 905         if (!uncommitted)
 906                 argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 907
 908         sm_summary.git_cmd = 1;
 909         sm_summary.no_stdin = 1;
 910
 911         capture_command(&sm_summary, &cmd_stdout, 1024);
 912
 913         /* prepend header, only if there's an actual output */
 914         if (cmd_stdout.len) {
 915                 if (uncommitted)
 916                         strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 917                 else
 918                         strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 919                 strbuf_addstr(&summary, "\n\n");
 920         }
 921         strbuf_addbuf(&summary, &cmd_stdout);
 922         strbuf_release(&cmd_stdout);
 923
 924         if (s->display_comment_prefix) {
 925                 size_t len;
 926                 summary_content = strbuf_detach(&summary, &len);
 927                 strbuf_add_commented_lines(&summary, summary_content, len);
 928                 free(summary_content);
 929         }
 930
 931         fputs(summary.buf, s->fp);
 932         strbuf_release(&summary);
 933 }
 934
 935 static void wt_longstatus_print_other(struct wt_status *s,
 936                                       struct string_list *l,
 937                                       const char *what,
 938                                       const char *how)
 939 {
 940         int i;
 941         struct strbuf buf = STRBUF_INIT;
 942         static struct string_list output = STRING_LIST_INIT_DUP;
 943         struct column_options copts;
 944
 945         if (!l->nr)
 946                 return;
 947
 948         wt_longstatus_print_other_header(s, what, how);
 949
 950         for (i = 0; i < l->nr; i++) {
 951                 struct string_list_item *it;
 952                 const char *path;
 953                 it = &(l->items[i]);
 954                 path = quote_path(it->string, s->prefix, &buf);
 955                 if (column_active(s->colopts)) {
 956                         string_list_append(&output, path);
 957                         continue;
 958                 }
 959                 status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 960                 status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 961                                    "%s\n", path);
 962         }
 963
 964         strbuf_release(&buf);
 965         if (!column_active(s->colopts))
 966                 goto conclude;
 967
 968         strbuf_addf(&buf, "%s%s\t%s",
 969                     color(WT_STATUS_HEADER, s),
 970                     s->display_comment_prefix ? "#" : "",
 971                     color(WT_STATUS_UNTRACKED, s));
 972         memset(&copts, 0, sizeof(copts));
 973         copts.padding = 1;
 974         copts.indent = buf.buf;
 975         if (want_color(s->use_color))
 976                 copts.nl = GIT_COLOR_RESET "\n";
 977         print_columns(&output, s->colopts, &copts);
 978         string_list_clear(&output, 0);
 979         strbuf_release(&buf);
 980 conclude:
 981         status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 982 }
 983
 984 size_t wt_status_locate_end(const char *s, size_t len)
 985 {
 986         const char *p;
 987         struct strbuf pattern = STRBUF_INIT;
 988
 989         strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
 990         if (starts_with(s, pattern.buf + 1))
 991                 len = 0;
 992         else if ((p = strstr(s, pattern.buf)))
 993                 len = p - s + 1;
 994         strbuf_release(&pattern);
 995         return len;
 996 }
 997
 998 void wt_status_add_cut_line(FILE *fp)
 999 {
1000         const char *explanation = _("Do not modify or remove the line above.\nEverything below it will be ignored.");
1001         struct strbuf buf = STRBUF_INIT;
1002
1003         fprintf(fp, "%c %s", comment_line_char, cut_line);
1004         strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
1005         fputs(buf.buf, fp);
1006         strbuf_release(&buf);
1007 }
1008
1009 static void wt_longstatus_print_verbose(struct wt_status *s)
1010 {
1011         struct rev_info rev;
1012         struct setup_revision_opt opt;
1013         int dirty_submodules;
1014         const char *c = color(WT_STATUS_HEADER, s);
1015
1016         repo_init_revisions(s->repo, &rev, NULL);
1017         rev.diffopt.flags.allow_textconv = 1;
1018         rev.diffopt.ita_invisible_in_index = 1;
1019
1020         memset(&opt, 0, sizeof(opt));
1021         opt.def = s->is_initial ? empty_tree_oid_hex() : s->reference;
1022         setup_revisions(0, NULL, &rev, &opt);
1023
1024         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
1025         rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
1026         rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
1027         rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
1028         rev.diffopt.file = s->fp;
1029         rev.diffopt.close_file = 0;
1030         /*
1031          * If we're not going to stdout, then we definitely don't
1032          * want color, since we are going to the commit message
1033          * file (and even the "auto" setting won't work, since it
1034          * will have checked isatty on stdout). But we then do want
1035          * to insert the scissor line here to reliably remove the
1036          * diff before committing.
1037          */
1038         if (s->fp != stdout) {
1039                 rev.diffopt.use_color = 0;
1040                 wt_status_add_cut_line(s->fp);
1041         }
1042         if (s->verbose > 1 && s->committable) {
1043                 /* print_updated() printed a header, so do we */
1044                 if (s->fp != stdout)
1045                         wt_longstatus_print_trailer(s);
1046                 status_printf_ln(s, c, _("Changes to be committed:"));
1047                 rev.diffopt.a_prefix = "c/";
1048                 rev.diffopt.b_prefix = "i/";
1049         } /* else use prefix as per user config */
1050         run_diff_index(&rev, 1);
1051         if (s->verbose > 1 &&
1052             wt_status_check_worktree_changes(s, &dirty_submodules)) {
1053                 status_printf_ln(s, c,
1054                         "--------------------------------------------------");
1055                 status_printf_ln(s, c, _("Changes not staged for commit:"));
1056                 setup_work_tree();
1057                 rev.diffopt.a_prefix = "i/";
1058                 rev.diffopt.b_prefix = "w/";
1059                 run_diff_files(&rev, 0);
1060         }
1061 }
1062
1063 static void wt_longstatus_print_tracking(struct wt_status *s)
1064 {
1065         struct strbuf sb = STRBUF_INIT;
1066         const char *cp, *ep, *branch_name;
1067         struct branch *branch;
1068         char comment_line_string[3];
1069         int i;
1070
1071         assert(s->branch && !s->is_initial);
1072         if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
1073                 return;
1074         branch = branch_get(branch_name);
1075         if (!format_tracking_info(branch, &sb, s->ahead_behind_flags))
1076                 return;
1077
1078         i = 0;
1079         if (s->display_comment_prefix) {
1080                 comment_line_string[i++] = comment_line_char;
1081                 comment_line_string[i++] = ' ';
1082         }
1083         comment_line_string[i] = '\0';
1084
1085         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
1086                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
1087                                  "%s%.*s", comment_line_string,
1088                                  (int)(ep - cp), cp);
1089         if (s->display_comment_prefix)
1090                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
1091                                  comment_line_char);
1092         else
1093                 fputs("\n", s->fp);
1094         strbuf_release(&sb);
1095 }
1096
1097 static void show_merge_in_progress(struct wt_status *s,
1098                                    const char *color)
1099 {
1100         if (has_unmerged(s)) {
1101                 status_printf_ln(s, color, _("You have unmerged paths."));
1102                 if (s->hints) {
1103                         status_printf_ln(s, color,
1104                                          _("  (fix conflicts and run \"git commit\")"));
1105                         status_printf_ln(s, color,
1106                                          _("  (use \"git merge --abort\" to abort the merge)"));
1107                 }
1108         } else {
1109                 status_printf_ln(s, color,
1110                         _("All conflicts fixed but you are still merging."));
1111                 if (s->hints)
1112                         status_printf_ln(s, color,
1113                                 _("  (use \"git commit\" to conclude merge)"));
1114         }
1115         wt_longstatus_print_trailer(s);
1116 }
1117
1118 static void show_am_in_progress(struct wt_status *s,
1119                                 const char *color)
1120 {
1121         status_printf_ln(s, color,
1122                 _("You are in the middle of an am session."));
1123         if (s->state.am_empty_patch)
1124                 status_printf_ln(s, color,
1125                         _("The current patch is empty."));
1126         if (s->hints) {
1127                 if (!s->state.am_empty_patch)
1128                         status_printf_ln(s, color,
1129                                 _("  (fix conflicts and then run \"git am --continue\")"));
1130                 status_printf_ln(s, color,
1131                         _("  (use \"git am --skip\" to skip this patch)"));
1132                 status_printf_ln(s, color,
1133                         _("  (use \"git am --abort\" to restore the original branch)"));
1134         }
1135         wt_longstatus_print_trailer(s);
1136 }
1137
1138 static char *read_line_from_git_path(const char *filename)
1139 {
1140         struct strbuf buf = STRBUF_INIT;
1141         FILE *fp = fopen_or_warn(git_path("%s", filename), "r");
1142
1143         if (!fp) {
1144                 strbuf_release(&buf);
1145                 return NULL;
1146         }
1147         strbuf_getline_lf(&buf, fp);
1148         if (!fclose(fp)) {
1149                 return strbuf_detach(&buf, NULL);
1150         } else {
1151                 strbuf_release(&buf);
1152                 return NULL;
1153         }
1154 }
1155
1156 static int split_commit_in_progress(struct wt_status *s)
1157 {
1158         int split_in_progress = 0;
1159         char *head, *orig_head, *rebase_amend, *rebase_orig_head;
1160
1161         if ((!s->amend && !s->nowarn && !s->workdir_dirty) ||
1162             !s->branch || strcmp(s->branch, "HEAD"))
1163                 return 0;
1164
1165         head = read_line_from_git_path("HEAD");
1166         orig_head = read_line_from_git_path("ORIG_HEAD");
1167         rebase_amend = read_line_from_git_path("rebase-merge/amend");
1168         rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1169
1170         if (!head || !orig_head || !rebase_amend || !rebase_orig_head)
1171                 ; /* fall through, no split in progress */
1172         else if (!strcmp(rebase_amend, rebase_orig_head))
1173                 split_in_progress = !!strcmp(head, rebase_amend);
1174         else if (strcmp(orig_head, rebase_orig_head))
1175                 split_in_progress = 1;
1176
1177         free(head);
1178         free(orig_head);
1179         free(rebase_amend);
1180         free(rebase_orig_head);
1181
1182         return split_in_progress;
1183 }
1184
1185 /*
1186  * Turn
1187  * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1188  * into
1189  * "pick d6a2f03 some message"
1190  *
1191  * The function assumes that the line does not contain useless spaces
1192  * before or after the command.
1193  */
1194 static void abbrev_sha1_in_line(struct strbuf *line)
1195 {
1196         struct strbuf **split;
1197         int i;
1198
1199         if (starts_with(line->buf, "exec ") ||
1200             starts_with(line->buf, "x "))
1201                 return;
1202
1203         split = strbuf_split_max(line, ' ', 3);
1204         if (split[0] && split[1]) {
1205                 struct object_id oid;
1206
1207                 /*
1208                  * strbuf_split_max left a space. Trim it and re-add
1209                  * it after abbreviation.
1210                  */
1211                 strbuf_trim(split[1]);
1212                 if (!get_oid(split[1]->buf, &oid)) {
1213                         strbuf_reset(split[1]);
1214                         strbuf_add_unique_abbrev(split[1], &oid,
1215                                                  DEFAULT_ABBREV);
1216                         strbuf_addch(split[1], ' ');
1217                         strbuf_reset(line);
1218                         for (i = 0; split[i]; i++)
1219                                 strbuf_addbuf(line, split[i]);
1220                 }
1221         }
1222         strbuf_list_free(split);
1223 }
1224
1225 static int read_rebase_todolist(const char *fname, struct string_list *lines)
1226 {
1227         struct strbuf line = STRBUF_INIT;
1228         FILE *f = fopen(git_path("%s", fname), "r");
1229
1230         if (!f) {
1231                 if (errno == ENOENT)
1232                         return -1;
1233                 die_errno("Could not open file %s for reading",
1234                           git_path("%s", fname));
1235         }
1236         while (!strbuf_getline_lf(&line, f)) {
1237                 if (line.len && line.buf[0] == comment_line_char)
1238                         continue;
1239                 strbuf_trim(&line);
1240                 if (!line.len)
1241                         continue;
1242                 abbrev_sha1_in_line(&line);
1243                 string_list_append(lines, line.buf);
1244         }
1245         fclose(f);
1246         strbuf_release(&line);
1247         return 0;
1248 }
1249
1250 static void show_rebase_information(struct wt_status *s,
1251                                     const char *color)
1252 {
1253         if (s->state.rebase_interactive_in_progress) {
1254                 int i;
1255                 int nr_lines_to_show = 2;
1256
1257                 struct string_list have_done = STRING_LIST_INIT_DUP;
1258                 struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1259
1260                 read_rebase_todolist("rebase-merge/done", &have_done);
1261                 if (read_rebase_todolist("rebase-merge/git-rebase-todo",
1262                                          &yet_to_do))
1263                         status_printf_ln(s, color,
1264                                 _("git-rebase-todo is missing."));
1265                 if (have_done.nr == 0)
1266                         status_printf_ln(s, color, _("No commands done."));
1267                 else {
1268                         status_printf_ln(s, color,
1269                                 Q_("Last command done (%d command done):",
1270                                         "Last commands done (%d commands done):",
1271                                         have_done.nr),
1272                                 have_done.nr);
1273                         for (i = (have_done.nr > nr_lines_to_show)
1274                                 ? have_done.nr - nr_lines_to_show : 0;
1275                                 i < have_done.nr;
1276                                 i++)
1277                                 status_printf_ln(s, color, "   %s", have_done.items[i].string);
1278                         if (have_done.nr > nr_lines_to_show && s->hints)
1279                                 status_printf_ln(s, color,
1280                                         _("  (see more in file %s)"), git_path("rebase-merge/done"));
1281                 }
1282
1283                 if (yet_to_do.nr == 0)
1284                         status_printf_ln(s, color,
1285                                          _("No commands remaining."));
1286                 else {
1287                         status_printf_ln(s, color,
1288                                 Q_("Next command to do (%d remaining command):",
1289                                         "Next commands to do (%d remaining commands):",
1290                                         yet_to_do.nr),
1291                                 yet_to_do.nr);
1292                         for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1293                                 status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1294                         if (s->hints)
1295                                 status_printf_ln(s, color,
1296                                         _("  (use \"git rebase --edit-todo\" to view and edit)"));
1297                 }
1298                 string_list_clear(&yet_to_do, 0);
1299                 string_list_clear(&have_done, 0);
1300         }
1301 }
1302
1303 static void print_rebase_state(struct wt_status *s,
1304                                const char *color)
1305 {
1306         if (s->state.branch)
1307                 status_printf_ln(s, color,
1308                                  _("You are currently rebasing branch '%s' on '%s'."),
1309                                  s->state.branch,
1310                                  s->state.onto);
1311         else
1312                 status_printf_ln(s, color,
1313                                  _("You are currently rebasing."));
1314 }
1315
1316 static void show_rebase_in_progress(struct wt_status *s,
1317                                     const char *color)
1318 {
1319         struct stat st;
1320
1321         show_rebase_information(s, color);
1322         if (has_unmerged(s)) {
1323                 print_rebase_state(s, color);
1324                 if (s->hints) {
1325                         status_printf_ln(s, color,
1326                                 _("  (fix conflicts and then run \"git rebase --continue\")"));
1327                         status_printf_ln(s, color,
1328                                 _("  (use \"git rebase --skip\" to skip this patch)"));
1329                         status_printf_ln(s, color,
1330                                 _("  (use \"git rebase --abort\" to check out the original branch)"));
1331                 }
1332         } else if (s->state.rebase_in_progress ||
1333                    !stat(git_path_merge_msg(s->repo), &st)) {
1334                 print_rebase_state(s, color);
1335                 if (s->hints)
1336                         status_printf_ln(s, color,
1337                                 _("  (all conflicts fixed: run \"git rebase --continue\")"));
1338         } else if (split_commit_in_progress(s)) {
1339                 if (s->state.branch)
1340                         status_printf_ln(s, color,
1341                                          _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1342                                          s->state.branch,
1343                                          s->state.onto);
1344                 else
1345                         status_printf_ln(s, color,
1346                                          _("You are currently splitting a commit during a rebase."));
1347                 if (s->hints)
1348                         status_printf_ln(s, color,
1349                                 _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1350         } else {
1351                 if (s->state.branch)
1352                         status_printf_ln(s, color,
1353                                          _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1354                                          s->state.branch,
1355                                          s->state.onto);
1356                 else
1357                         status_printf_ln(s, color,
1358                                          _("You are currently editing a commit during a rebase."));
1359                 if (s->hints && !s->amend) {
1360                         status_printf_ln(s, color,
1361                                 _("  (use \"git commit --amend\" to amend the current commit)"));
1362                         status_printf_ln(s, color,
1363                                 _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1364                 }
1365         }
1366         wt_longstatus_print_trailer(s);
1367 }
1368
1369 static void show_cherry_pick_in_progress(struct wt_status *s,
1370                                          const char *color)
1371 {
1372         status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1373                         find_unique_abbrev(&s->state.cherry_pick_head_oid, DEFAULT_ABBREV));
1374         if (s->hints) {
1375                 if (has_unmerged(s))
1376                         status_printf_ln(s, color,
1377                                 _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1378                 else
1379                         status_printf_ln(s, color,
1380                                 _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1381                 status_printf_ln(s, color,
1382                         _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1383         }
1384         wt_longstatus_print_trailer(s);
1385 }
1386
1387 static void show_revert_in_progress(struct wt_status *s,
1388                                     const char *color)
1389 {
1390         status_printf_ln(s, color, _("You are currently reverting commit %s."),
1391                          find_unique_abbrev(&s->state.revert_head_oid, DEFAULT_ABBREV));
1392         if (s->hints) {
1393                 if (has_unmerged(s))
1394                         status_printf_ln(s, color,
1395                                 _("  (fix conflicts and run \"git revert --continue\")"));
1396                 else
1397                         status_printf_ln(s, color,
1398                                 _("  (all conflicts fixed: run \"git revert --continue\")"));
1399                 status_printf_ln(s, color,
1400                         _("  (use \"git revert --abort\" to cancel the revert operation)"));
1401         }
1402         wt_longstatus_print_trailer(s);
1403 }
1404
1405 static void show_bisect_in_progress(struct wt_status *s,
1406                                     const char *color)
1407 {
1408         if (s->state.branch)
1409                 status_printf_ln(s, color,
1410                                  _("You are currently bisecting, started from branch '%s'."),
1411                                  s->state.branch);
1412         else
1413                 status_printf_ln(s, color,
1414                                  _("You are currently bisecting."));
1415         if (s->hints)
1416                 status_printf_ln(s, color,
1417                         _("  (use \"git bisect reset\" to get back to the original branch)"));
1418         wt_longstatus_print_trailer(s);
1419 }
1420
1421 /*
1422  * Extract branch information from rebase/bisect
1423  */
1424 static char *get_branch(const struct worktree *wt, const char *path)
1425 {
1426         struct strbuf sb = STRBUF_INIT;
1427         struct object_id oid;
1428         const char *branch_name;
1429
1430         if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
1431                 goto got_nothing;
1432
1433         while (sb.len && sb.buf[sb.len - 1] == '\n')
1434                 strbuf_setlen(&sb, sb.len - 1);
1435         if (!sb.len)
1436                 goto got_nothing;
1437         if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1438                 strbuf_remove(&sb, 0, branch_name - sb.buf);
1439         else if (starts_with(sb.buf, "refs/"))
1440                 ;
1441         else if (!get_oid_hex(sb.buf, &oid)) {
1442                 strbuf_reset(&sb);
1443                 strbuf_add_unique_abbrev(&sb, &oid, DEFAULT_ABBREV);
1444         } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1445                 goto got_nothing;
1446         else                    /* bisect */
1447                 ;
1448         return strbuf_detach(&sb, NULL);
1449
1450 got_nothing:
1451         strbuf_release(&sb);
1452         return NULL;
1453 }
1454
1455 struct grab_1st_switch_cbdata {
1456         struct strbuf buf;
1457         struct object_id noid;
1458 };
1459
1460 static int grab_1st_switch(struct object_id *ooid, struct object_id *noid,
1461                            const char *email, timestamp_t timestamp, int tz,
1462                            const char *message, void *cb_data)
1463 {
1464         struct grab_1st_switch_cbdata *cb = cb_data;
1465         const char *target = NULL, *end;
1466
1467         if (!skip_prefix(message, "checkout: moving from ", &message))
1468                 return 0;
1469         target = strstr(message, " to ");
1470         if (!target)
1471                 return 0;
1472         target += strlen(" to ");
1473         strbuf_reset(&cb->buf);
1474         oidcpy(&cb->noid, noid);
1475         end = strchrnul(target, '\n');
1476         strbuf_add(&cb->buf, target, end - target);
1477         if (!strcmp(cb->buf.buf, "HEAD")) {
1478                 /* HEAD is relative. Resolve it to the right reflog entry. */
1479                 strbuf_reset(&cb->buf);
1480                 strbuf_add_unique_abbrev(&cb->buf, noid, DEFAULT_ABBREV);
1481         }
1482         return 1;
1483 }
1484
1485 static void wt_status_get_detached_from(struct repository *r,
1486                                         struct wt_status_state *state)
1487 {
1488         struct grab_1st_switch_cbdata cb;
1489         struct commit *commit;
1490         struct object_id oid;
1491         char *ref = NULL;
1492
1493         strbuf_init(&cb.buf, 0);
1494         if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1495                 strbuf_release(&cb.buf);
1496                 return;
1497         }
1498
1499         if (dwim_ref(cb.buf.buf, cb.buf.len, &oid, &ref) == 1 &&
1500             /* sha1 is a commit? match without further lookup */
1501             (oideq(&cb.noid, &oid) ||
1502              /* perhaps sha1 is a tag, try to dereference to a commit */
1503              ((commit = lookup_commit_reference_gently(r, &oid, 1)) != NULL &&
1504               oideq(&cb.noid, &commit->object.oid)))) {
1505                 const char *from = ref;
1506                 if (!skip_prefix(from, "refs/tags/", &from))
1507                         skip_prefix(from, "refs/remotes/", &from);
1508                 state->detached_from = xstrdup(from);
1509         } else
1510                 state->detached_from =
1511                         xstrdup(find_unique_abbrev(&cb.noid, DEFAULT_ABBREV));
1512         oidcpy(&state->detached_oid, &cb.noid);
1513         state->detached_at = !get_oid("HEAD", &oid) &&
1514                              oideq(&oid, &state->detached_oid);
1515
1516         free(ref);
1517         strbuf_release(&cb.buf);
1518 }
1519
1520 int wt_status_check_rebase(const struct worktree *wt,
1521                            struct wt_status_state *state)
1522 {
1523         struct stat st;
1524
1525         if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
1526                 if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
1527                         state->am_in_progress = 1;
1528                         if (!stat(worktree_git_path(wt, "rebase-apply/patch"), &st) && !st.st_size)
1529                                 state->am_empty_patch = 1;
1530                 } else {
1531                         state->rebase_in_progress = 1;
1532                         state->branch = get_branch(wt, "rebase-apply/head-name");
1533                         state->onto = get_branch(wt, "rebase-apply/onto");
1534                 }
1535         } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
1536                 if (!stat(worktree_git_path(wt, "rebase-merge/interactive"), &st))
1537                         state->rebase_interactive_in_progress = 1;
1538                 else
1539                         state->rebase_in_progress = 1;
1540                 state->branch = get_branch(wt, "rebase-merge/head-name");
1541                 state->onto = get_branch(wt, "rebase-merge/onto");
1542         } else
1543                 return 0;
1544         return 1;
1545 }
1546
1547 int wt_status_check_bisect(const struct worktree *wt,
1548                            struct wt_status_state *state)
1549 {
1550         struct stat st;
1551
1552         if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
1553                 state->bisect_in_progress = 1;
1554                 state->branch = get_branch(wt, "BISECT_START");
1555                 return 1;
1556         }
1557         return 0;
1558 }
1559
1560 void wt_status_get_state(struct repository *r,
1561                          struct wt_status_state *state,
1562                          int get_detached_from)
1563 {
1564         struct stat st;
1565         struct object_id oid;
1566
1567         if (!stat(git_path_merge_head(r), &st)) {
1568                 wt_status_check_rebase(NULL, state);
1569                 state->merge_in_progress = 1;
1570         } else if (wt_status_check_rebase(NULL, state)) {
1571                 ;               /* all set */
1572         } else if (!stat(git_path_cherry_pick_head(r), &st) &&
1573                         !get_oid("CHERRY_PICK_HEAD", &oid)) {
1574                 state->cherry_pick_in_progress = 1;
1575                 oidcpy(&state->cherry_pick_head_oid, &oid);
1576         }
1577         wt_status_check_bisect(NULL, state);
1578         if (!stat(git_path_revert_head(r), &st) &&
1579             !get_oid("REVERT_HEAD", &oid)) {
1580                 state->revert_in_progress = 1;
1581                 oidcpy(&state->revert_head_oid, &oid);
1582         }
1583
1584         if (get_detached_from)
1585                 wt_status_get_detached_from(r, state);
1586 }
1587
1588 static void wt_longstatus_print_state(struct wt_status *s)
1589 {
1590         const char *state_color = color(WT_STATUS_HEADER, s);
1591         struct wt_status_state *state = &s->state;
1592
1593         if (state->merge_in_progress) {
1594                 if (state->rebase_interactive_in_progress) {
1595                         show_rebase_information(s, state_color);
1596                         fputs("\n", s->fp);
1597                 }
1598                 show_merge_in_progress(s, state_color);
1599         } else if (state->am_in_progress)
1600                 show_am_in_progress(s, state_color);
1601         else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1602                 show_rebase_in_progress(s, state_color);
1603         else if (state->cherry_pick_in_progress)
1604                 show_cherry_pick_in_progress(s, state_color);
1605         else if (state->revert_in_progress)
1606                 show_revert_in_progress(s, state_color);
1607         if (state->bisect_in_progress)
1608                 show_bisect_in_progress(s, state_color);
1609 }
1610
1611 static void wt_longstatus_print(struct wt_status *s)
1612 {
1613         const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1614         const char *branch_status_color = color(WT_STATUS_HEADER, s);
1615
1616         if (s->branch) {
1617                 const char *on_what = _("On branch ");
1618                 const char *branch_name = s->branch;
1619                 if (!strcmp(branch_name, "HEAD")) {
1620                         branch_status_color = color(WT_STATUS_NOBRANCH, s);
1621                         if (s->state.rebase_in_progress ||
1622                             s->state.rebase_interactive_in_progress) {
1623                                 if (s->state.rebase_interactive_in_progress)
1624                                         on_what = _("interactive rebase in progress; onto ");
1625                                 else
1626                                         on_what = _("rebase in progress; onto ");
1627                                 branch_name = s->state.onto;
1628                         } else if (s->state.detached_from) {
1629                                 branch_name = s->state.detached_from;
1630                                 if (s->state.detached_at)
1631                                         on_what = _("HEAD detached at ");
1632                                 else
1633                                         on_what = _("HEAD detached from ");
1634                         } else {
1635                                 branch_name = "";
1636                                 on_what = _("Not currently on any branch.");
1637                         }
1638                 } else
1639                         skip_prefix(branch_name, "refs/heads/", &branch_name);
1640                 status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1641                 status_printf_more(s, branch_status_color, "%s", on_what);
1642                 status_printf_more(s, branch_color, "%s\n", branch_name);
1643                 if (!s->is_initial)
1644                         wt_longstatus_print_tracking(s);
1645         }
1646
1647         wt_longstatus_print_state(s);
1648
1649         if (s->is_initial) {
1650                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1651                 status_printf_ln(s, color(WT_STATUS_HEADER, s),
1652                                  s->commit_template
1653                                  ? _("Initial commit")
1654                                  : _("No commits yet"));
1655                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1656         }
1657
1658         wt_longstatus_print_updated(s);
1659         wt_longstatus_print_unmerged(s);
1660         wt_longstatus_print_changed(s);
1661         if (s->submodule_summary &&
1662             (!s->ignore_submodule_arg ||
1663              strcmp(s->ignore_submodule_arg, "all"))) {
1664                 wt_longstatus_print_submodule_summary(s, 0);  /* staged */
1665                 wt_longstatus_print_submodule_summary(s, 1);  /* unstaged */
1666         }
1667         if (s->show_untracked_files) {
1668                 wt_longstatus_print_other(s, &s->untracked, _("Untracked files"), "add");
1669                 if (s->show_ignored_mode)
1670                         wt_longstatus_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1671                 if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1672                         status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1673                         status_printf_ln(s, GIT_COLOR_NORMAL,
1674                                          _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1675                                            "may speed it up, but you have to be careful not to forget to add\n"
1676                                            "new files yourself (see 'git help status')."),
1677                                          s->untracked_in_ms / 1000.0);
1678                 }
1679         } else if (s->committable)
1680                 status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1681                         s->hints
1682                         ? _(" (use -u option to show untracked files)") : "");
1683
1684         if (s->verbose)
1685                 wt_longstatus_print_verbose(s);
1686         if (!s->committable) {
1687                 if (s->amend)
1688                         status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1689                 else if (s->nowarn)
1690                         ; /* nothing */
1691                 else if (s->workdir_dirty) {
1692                         if (s->hints)
1693                                 printf(_("no changes added to commit "
1694                                          "(use \"git add\" and/or \"git commit -a\")\n"));
1695                         else
1696                                 printf(_("no changes added to commit\n"));
1697                 } else if (s->untracked.nr) {
1698                         if (s->hints)
1699                                 printf(_("nothing added to commit but untracked files "
1700                                          "present (use \"git add\" to track)\n"));
1701                         else
1702                                 printf(_("nothing added to commit but untracked files present\n"));
1703                 } else if (s->is_initial) {
1704                         if (s->hints)
1705                                 printf(_("nothing to commit (create/copy files "
1706                                          "and use \"git add\" to track)\n"));
1707                         else
1708                                 printf(_("nothing to commit\n"));
1709                 } else if (!s->show_untracked_files) {
1710                         if (s->hints)
1711                                 printf(_("nothing to commit (use -u to show untracked files)\n"));
1712                         else
1713                                 printf(_("nothing to commit\n"));
1714                 } else
1715                         printf(_("nothing to commit, working tree clean\n"));
1716         }
1717         if(s->show_stash)
1718                 wt_longstatus_print_stash_summary(s);
1719 }
1720
1721 static void wt_shortstatus_unmerged(struct string_list_item *it,
1722                            struct wt_status *s)
1723 {
1724         struct wt_status_change_data *d = it->util;
1725         const char *how = "??";
1726
1727         switch (d->stagemask) {
1728         case 1: how = "DD"; break; /* both deleted */
1729         case 2: how = "AU"; break; /* added by us */
1730         case 3: how = "UD"; break; /* deleted by them */
1731         case 4: how = "UA"; break; /* added by them */
1732         case 5: how = "DU"; break; /* deleted by us */
1733         case 6: how = "AA"; break; /* both added */
1734         case 7: how = "UU"; break; /* both modified */
1735         }
1736         color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1737         if (s->null_termination) {
1738                 fprintf(stdout, " %s%c", it->string, 0);
1739         } else {
1740                 struct strbuf onebuf = STRBUF_INIT;
1741                 const char *one;
1742                 one = quote_path(it->string, s->prefix, &onebuf);
1743                 printf(" %s\n", one);
1744                 strbuf_release(&onebuf);
1745         }
1746 }
1747
1748 static void wt_shortstatus_status(struct string_list_item *it,
1749                          struct wt_status *s)
1750 {
1751         struct wt_status_change_data *d = it->util;
1752
1753         if (d->index_status)
1754                 color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1755         else
1756                 putchar(' ');
1757         if (d->worktree_status)
1758                 color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1759         else
1760                 putchar(' ');
1761         putchar(' ');
1762         if (s->null_termination) {
1763                 fprintf(stdout, "%s%c", it->string, 0);
1764                 if (d->rename_source)
1765                         fprintf(stdout, "%s%c", d->rename_source, 0);
1766         } else {
1767                 struct strbuf onebuf = STRBUF_INIT;
1768                 const char *one;
1769
1770                 if (d->rename_source) {
1771                         one = quote_path(d->rename_source, s->prefix, &onebuf);
1772                         if (*one != '"' && strchr(one, ' ') != NULL) {
1773                                 putchar('"');
1774                                 strbuf_addch(&onebuf, '"');
1775                                 one = onebuf.buf;
1776                         }
1777                         printf("%s -> ", one);
1778                         strbuf_release(&onebuf);
1779                 }
1780                 one = quote_path(it->string, s->prefix, &onebuf);
1781                 if (*one != '"' && strchr(one, ' ') != NULL) {
1782                         putchar('"');
1783                         strbuf_addch(&onebuf, '"');
1784                         one = onebuf.buf;
1785                 }
1786                 printf("%s\n", one);
1787                 strbuf_release(&onebuf);
1788         }
1789 }
1790
1791 static void wt_shortstatus_other(struct string_list_item *it,
1792                                  struct wt_status *s, const char *sign)
1793 {
1794         if (s->null_termination) {
1795                 fprintf(stdout, "%s %s%c", sign, it->string, 0);
1796         } else {
1797                 struct strbuf onebuf = STRBUF_INIT;
1798                 const char *one;
1799                 one = quote_path(it->string, s->prefix, &onebuf);
1800                 color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1801                 printf(" %s\n", one);
1802                 strbuf_release(&onebuf);
1803         }
1804 }
1805
1806 static void wt_shortstatus_print_tracking(struct wt_status *s)
1807 {
1808         struct branch *branch;
1809         const char *header_color = color(WT_STATUS_HEADER, s);
1810         const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1811         const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1812
1813         const char *base;
1814         char *short_base;
1815         const char *branch_name;
1816         int num_ours, num_theirs, sti;
1817         int upstream_is_gone = 0;
1818
1819         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1820
1821         if (!s->branch)
1822                 return;
1823         branch_name = s->branch;
1824
1825 #define LABEL(string) (s->no_gettext ? (string) : _(string))
1826
1827         if (s->is_initial)
1828                 color_fprintf(s->fp, header_color, LABEL(N_("No commits yet on ")));
1829
1830         if (!strcmp(s->branch, "HEAD")) {
1831                 color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1832                               LABEL(N_("HEAD (no branch)")));
1833                 goto conclude;
1834         }
1835
1836         skip_prefix(branch_name, "refs/heads/", &branch_name);
1837
1838         branch = branch_get(branch_name);
1839
1840         color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1841
1842         sti = stat_tracking_info(branch, &num_ours, &num_theirs, &base,
1843                                  s->ahead_behind_flags);
1844         if (sti < 0) {
1845                 if (!base)
1846                         goto conclude;
1847
1848                 upstream_is_gone = 1;
1849         }
1850
1851         short_base = shorten_unambiguous_ref(base, 0);
1852         color_fprintf(s->fp, header_color, "...");
1853         color_fprintf(s->fp, branch_color_remote, "%s", short_base);
1854         free(short_base);
1855
1856         if (!upstream_is_gone && !sti)
1857                 goto conclude;
1858
1859         color_fprintf(s->fp, header_color, " [");
1860         if (upstream_is_gone) {
1861                 color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1862         } else if (s->ahead_behind_flags == AHEAD_BEHIND_QUICK) {
1863                 color_fprintf(s->fp, header_color, LABEL(N_("different")));
1864         } else if (!num_ours) {
1865                 color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1866                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1867         } else if (!num_theirs) {
1868                 color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1869                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1870         } else {
1871                 color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1872                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1873                 color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1874                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1875         }
1876
1877         color_fprintf(s->fp, header_color, "]");
1878  conclude:
1879         fputc(s->null_termination ? '\0' : '\n', s->fp);
1880 }
1881
1882 static void wt_shortstatus_print(struct wt_status *s)
1883 {
1884         struct string_list_item *it;
1885
1886         if (s->show_branch)
1887                 wt_shortstatus_print_tracking(s);
1888
1889         for_each_string_list_item(it, &s->change) {
1890                 struct wt_status_change_data *d = it->util;
1891
1892                 if (d->stagemask)
1893                         wt_shortstatus_unmerged(it, s);
1894                 else
1895                         wt_shortstatus_status(it, s);
1896         }
1897         for_each_string_list_item(it, &s->untracked)
1898                 wt_shortstatus_other(it, s, "??");
1899
1900         for_each_string_list_item(it, &s->ignored)
1901                 wt_shortstatus_other(it, s, "!!");
1902 }
1903
1904 static void wt_porcelain_print(struct wt_status *s)
1905 {
1906         s->use_color = 0;
1907         s->relative_paths = 0;
1908         s->prefix = NULL;
1909         s->no_gettext = 1;
1910         wt_shortstatus_print(s);
1911 }
1912
1913 /*
1914  * Print branch information for porcelain v2 output.  These lines
1915  * are printed when the '--branch' parameter is given.
1916  *
1917  *    # branch.oid <commit><eol>
1918  *    # branch.head <head><eol>
1919  *   [# branch.upstream <upstream><eol>
1920  *   [# branch.ab +<ahead> -<behind><eol>]]
1921  *
1922  *      <commit> ::= the current commit hash or the the literal
1923  *                   "(initial)" to indicate an initialized repo
1924  *                   with no commits.
1925  *
1926  *        <head> ::= <branch_name> the current branch name or
1927  *                   "(detached)" literal when detached head or
1928  *                   "(unknown)" when something is wrong.
1929  *
1930  *    <upstream> ::= the upstream branch name, when set.
1931  *
1932  *       <ahead> ::= integer ahead value or '?'.
1933  *
1934  *      <behind> ::= integer behind value or '?'.
1935  *
1936  * The end-of-line is defined by the -z flag.
1937  *
1938  *                 <eol> ::= NUL when -z,
1939  *                           LF when NOT -z.
1940  *
1941  * When an upstream is set and present, the 'branch.ab' line will
1942  * be printed with the ahead/behind counts for the branch and the
1943  * upstream.  When AHEAD_BEHIND_QUICK is requested and the branches
1944  * are different, '?' will be substituted for the actual count.
1945  */
1946 static void wt_porcelain_v2_print_tracking(struct wt_status *s)
1947 {
1948         struct branch *branch;
1949         const char *base;
1950         const char *branch_name;
1951         int ab_info, nr_ahead, nr_behind;
1952         char eol = s->null_termination ? '\0' : '\n';
1953
1954         fprintf(s->fp, "# branch.oid %s%c",
1955                         (s->is_initial ? "(initial)" : sha1_to_hex(s->sha1_commit)),
1956                         eol);
1957
1958         if (!s->branch)
1959                 fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
1960         else {
1961                 if (!strcmp(s->branch, "HEAD")) {
1962                         fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
1963
1964                         if (s->state.rebase_in_progress ||
1965                             s->state.rebase_interactive_in_progress)
1966                                 branch_name = s->state.onto;
1967                         else if (s->state.detached_from)
1968                                 branch_name = s->state.detached_from;
1969                         else
1970                                 branch_name = "";
1971                 } else {
1972                         branch_name = NULL;
1973                         skip_prefix(s->branch, "refs/heads/", &branch_name);
1974
1975                         fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
1976                 }
1977
1978                 /* Lookup stats on the upstream tracking branch, if set. */
1979                 branch = branch_get(branch_name);
1980                 base = NULL;
1981                 ab_info = stat_tracking_info(branch, &nr_ahead, &nr_behind,
1982                                              &base, s->ahead_behind_flags);
1983                 if (base) {
1984                         base = shorten_unambiguous_ref(base, 0);
1985                         fprintf(s->fp, "# branch.upstream %s%c", base, eol);
1986                         free((char *)base);
1987
1988                         if (ab_info > 0) {
1989                                 /* different */
1990                                 if (nr_ahead || nr_behind)
1991                                         fprintf(s->fp, "# branch.ab +%d -%d%c",
1992                                                 nr_ahead, nr_behind, eol);
1993                                 else
1994                                         fprintf(s->fp, "# branch.ab +? -?%c",
1995                                                 eol);
1996                         } else if (!ab_info) {
1997                                 /* same */
1998                                 fprintf(s->fp, "# branch.ab +0 -0%c", eol);
1999                         }
2000                 }
2001         }
2002 }
2003
2004 /*
2005  * Convert various submodule status values into a
2006  * fixed-length string of characters in the buffer provided.
2007  */
2008 static void wt_porcelain_v2_submodule_state(
2009         struct wt_status_change_data *d,
2010         char sub[5])
2011 {
2012         if (S_ISGITLINK(d->mode_head) ||
2013                 S_ISGITLINK(d->mode_index) ||
2014                 S_ISGITLINK(d->mode_worktree)) {
2015                 sub[0] = 'S';
2016                 sub[1] = d->new_submodule_commits ? 'C' : '.';
2017                 sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
2018                 sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
2019         } else {
2020                 sub[0] = 'N';
2021                 sub[1] = '.';
2022                 sub[2] = '.';
2023                 sub[3] = '.';
2024         }
2025         sub[4] = 0;
2026 }
2027
2028 /*
2029  * Fix-up changed entries before we print them.
2030  */
2031 static void wt_porcelain_v2_fix_up_changed(
2032         struct string_list_item *it,
2033         struct wt_status *s)
2034 {
2035         struct wt_status_change_data *d = it->util;
2036
2037         if (!d->index_status) {
2038                 /*
2039                  * This entry is unchanged in the index (relative to the head).
2040                  * Therefore, the collect_updated_cb was never called for this
2041                  * entry (during the head-vs-index scan) and so the head column
2042                  * fields were never set.
2043                  *
2044                  * We must have data for the index column (from the
2045                  * index-vs-worktree scan (otherwise, this entry should not be
2046                  * in the list of changes)).
2047                  *
2048                  * Copy index column fields to the head column, so that our
2049                  * output looks complete.
2050                  */
2051                 assert(d->mode_head == 0);
2052                 d->mode_head = d->mode_index;
2053                 oidcpy(&d->oid_head, &d->oid_index);
2054         }
2055
2056         if (!d->worktree_status) {
2057                 /*
2058                  * This entry is unchanged in the worktree (relative to the index).
2059                  * Therefore, the collect_changed_cb was never called for this entry
2060                  * (during the index-vs-worktree scan) and so the worktree column
2061                  * fields were never set.
2062                  *
2063                  * We must have data for the index column (from the head-vs-index
2064                  * scan).
2065                  *
2066                  * Copy the index column fields to the worktree column so that
2067                  * our output looks complete.
2068                  *
2069                  * Note that we only have a mode field in the worktree column
2070                  * because the scan code tries really hard to not have to compute it.
2071                  */
2072                 assert(d->mode_worktree == 0);
2073                 d->mode_worktree = d->mode_index;
2074         }
2075 }
2076
2077 /*
2078  * Print porcelain v2 info for tracked entries with changes.
2079  */
2080 static void wt_porcelain_v2_print_changed_entry(
2081         struct string_list_item *it,
2082         struct wt_status *s)
2083 {
2084         struct wt_status_change_data *d = it->util;
2085         struct strbuf buf = STRBUF_INIT;
2086         struct strbuf buf_from = STRBUF_INIT;
2087         const char *path = NULL;
2088         const char *path_from = NULL;
2089         char key[3];
2090         char submodule_token[5];
2091         char sep_char, eol_char;
2092
2093         wt_porcelain_v2_fix_up_changed(it, s);
2094         wt_porcelain_v2_submodule_state(d, submodule_token);
2095
2096         key[0] = d->index_status ? d->index_status : '.';
2097         key[1] = d->worktree_status ? d->worktree_status : '.';
2098         key[2] = 0;
2099
2100         if (s->null_termination) {
2101                 /*
2102                  * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
2103                  * A single NUL character separates them.
2104                  */
2105                 sep_char = '\0';
2106                 eol_char = '\0';
2107                 path = it->string;
2108                 path_from = d->rename_source;
2109         } else {
2110                 /*
2111                  * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
2112                  * The source path is only present when necessary.
2113                  * A single TAB separates them (because paths can contain spaces
2114                  * which are not escaped and C-quoting does escape TAB characters).
2115                  */
2116                 sep_char = '\t';
2117                 eol_char = '\n';
2118                 path = quote_path(it->string, s->prefix, &buf);
2119                 if (d->rename_source)
2120                         path_from = quote_path(d->rename_source, s->prefix, &buf_from);
2121         }
2122
2123         if (path_from)
2124                 fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
2125                                 key, submodule_token,
2126                                 d->mode_head, d->mode_index, d->mode_worktree,
2127                                 oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2128                                 d->rename_status, d->rename_score,
2129                                 path, sep_char, path_from, eol_char);
2130         else
2131                 fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
2132                                 key, submodule_token,
2133                                 d->mode_head, d->mode_index, d->mode_worktree,
2134                                 oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2135                                 path, eol_char);
2136
2137         strbuf_release(&buf);
2138         strbuf_release(&buf_from);
2139 }
2140
2141 /*
2142  * Print porcelain v2 status info for unmerged entries.
2143  */
2144 static void wt_porcelain_v2_print_unmerged_entry(
2145         struct string_list_item *it,
2146         struct wt_status *s)
2147 {
2148         struct wt_status_change_data *d = it->util;
2149         struct index_state *istate = s->repo->index;
2150         const struct cache_entry *ce;
2151         struct strbuf buf_index = STRBUF_INIT;
2152         const char *path_index = NULL;
2153         int pos, stage, sum;
2154         struct {
2155                 int mode;
2156                 struct object_id oid;
2157         } stages[3];
2158         char *key;
2159         char submodule_token[5];
2160         char unmerged_prefix = 'u';
2161         char eol_char = s->null_termination ? '\0' : '\n';
2162
2163         wt_porcelain_v2_submodule_state(d, submodule_token);
2164
2165         switch (d->stagemask) {
2166         case 1: key = "DD"; break; /* both deleted */
2167         case 2: key = "AU"; break; /* added by us */
2168         case 3: key = "UD"; break; /* deleted by them */
2169         case 4: key = "UA"; break; /* added by them */
2170         case 5: key = "DU"; break; /* deleted by us */
2171         case 6: key = "AA"; break; /* both added */
2172         case 7: key = "UU"; break; /* both modified */
2173         default:
2174                 BUG("unhandled unmerged status %x", d->stagemask);
2175         }
2176
2177         /*
2178          * Disregard d.aux.porcelain_v2 data that we accumulated
2179          * for the head and index columns during the scans and
2180          * replace with the actual stage data.
2181          *
2182          * Note that this is a last-one-wins for each the individual
2183          * stage [123] columns in the event of multiple cache entries
2184          * for same stage.
2185          */
2186         memset(stages, 0, sizeof(stages));
2187         sum = 0;
2188         pos = index_name_pos(istate, it->string, strlen(it->string));
2189         assert(pos < 0);
2190         pos = -pos-1;
2191         while (pos < istate->cache_nr) {
2192                 ce = istate->cache[pos++];
2193                 stage = ce_stage(ce);
2194                 if (strcmp(ce->name, it->string) || !stage)
2195                         break;
2196                 stages[stage - 1].mode = ce->ce_mode;
2197                 oidcpy(&stages[stage - 1].oid, &ce->oid);
2198                 sum |= (1 << (stage - 1));
2199         }
2200         if (sum != d->stagemask)
2201                 BUG("observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
2202
2203         if (s->null_termination)
2204                 path_index = it->string;
2205         else
2206                 path_index = quote_path(it->string, s->prefix, &buf_index);
2207
2208         fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
2209                         unmerged_prefix, key, submodule_token,
2210                         stages[0].mode, /* stage 1 */
2211                         stages[1].mode, /* stage 2 */
2212                         stages[2].mode, /* stage 3 */
2213                         d->mode_worktree,
2214                         oid_to_hex(&stages[0].oid), /* stage 1 */
2215                         oid_to_hex(&stages[1].oid), /* stage 2 */
2216                         oid_to_hex(&stages[2].oid), /* stage 3 */
2217                         path_index,
2218                         eol_char);
2219
2220         strbuf_release(&buf_index);
2221 }
2222
2223 /*
2224  * Print porcelain V2 status info for untracked and ignored entries.
2225  */
2226 static void wt_porcelain_v2_print_other(
2227         struct string_list_item *it,
2228         struct wt_status *s,
2229         char prefix)
2230 {
2231         struct strbuf buf = STRBUF_INIT;
2232         const char *path;
2233         char eol_char;
2234
2235         if (s->null_termination) {
2236                 path = it->string;
2237                 eol_char = '\0';
2238         } else {
2239                 path = quote_path(it->string, s->prefix, &buf);
2240                 eol_char = '\n';
2241         }
2242
2243         fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
2244
2245         strbuf_release(&buf);
2246 }
2247
2248 /*
2249  * Print porcelain V2 status.
2250  *
2251  * [<v2_branch>]
2252  * [<v2_changed_items>]*
2253  * [<v2_unmerged_items>]*
2254  * [<v2_untracked_items>]*
2255  * [<v2_ignored_items>]*
2256  *
2257  */
2258 static void wt_porcelain_v2_print(struct wt_status *s)
2259 {
2260         struct wt_status_change_data *d;
2261         struct string_list_item *it;
2262         int i;
2263
2264         if (s->show_branch)
2265                 wt_porcelain_v2_print_tracking(s);
2266
2267         for (i = 0; i < s->change.nr; i++) {
2268                 it = &(s->change.items[i]);
2269                 d = it->util;
2270                 if (!d->stagemask)
2271                         wt_porcelain_v2_print_changed_entry(it, s);
2272         }
2273
2274         for (i = 0; i < s->change.nr; i++) {
2275                 it = &(s->change.items[i]);
2276                 d = it->util;
2277                 if (d->stagemask)
2278                         wt_porcelain_v2_print_unmerged_entry(it, s);
2279         }
2280
2281         for (i = 0; i < s->untracked.nr; i++) {
2282                 it = &(s->untracked.items[i]);
2283                 wt_porcelain_v2_print_other(it, s, '?');
2284         }
2285
2286         for (i = 0; i < s->ignored.nr; i++) {
2287                 it = &(s->ignored.items[i]);
2288                 wt_porcelain_v2_print_other(it, s, '!');
2289         }
2290 }
2291
2292 void wt_status_print(struct wt_status *s)
2293 {
2294         switch (s->status_format) {
2295         case STATUS_FORMAT_SHORT:
2296                 wt_shortstatus_print(s);
2297                 break;
2298         case STATUS_FORMAT_PORCELAIN:
2299                 wt_porcelain_print(s);
2300                 break;
2301         case STATUS_FORMAT_PORCELAIN_V2:
2302                 wt_porcelain_v2_print(s);
2303                 break;
2304         case STATUS_FORMAT_UNSPECIFIED:
2305                 BUG("finalize_deferred_config() should have been called");
2306                 break;
2307         case STATUS_FORMAT_NONE:
2308         case STATUS_FORMAT_LONG:
2309                 wt_longstatus_print(s);
2310                 break;
2311         }
2312 }
2313
2314 /**
2315  * Returns 1 if there are unstaged changes, 0 otherwise.
2316  */
2317 int has_unstaged_changes(struct repository *r, int ignore_submodules)
2318 {
2319         struct rev_info rev_info;
2320         int result;
2321
2322         repo_init_revisions(r, &rev_info, NULL);
2323         if (ignore_submodules) {
2324                 rev_info.diffopt.flags.ignore_submodules = 1;
2325                 rev_info.diffopt.flags.override_submodule_config = 1;
2326         }
2327         rev_info.diffopt.flags.quick = 1;
2328         diff_setup_done(&rev_info.diffopt);
2329         result = run_diff_files(&rev_info, 0);
2330         return diff_result_code(&rev_info.diffopt, result);
2331 }
2332
2333 /**
2334  * Returns 1 if there are uncommitted changes, 0 otherwise.
2335  */
2336 int has_uncommitted_changes(struct repository *r,
2337                             int ignore_submodules)
2338 {
2339         struct rev_info rev_info;
2340         int result;
2341
2342         if (is_index_unborn(r->index))
2343                 return 0;
2344
2345         repo_init_revisions(r, &rev_info, NULL);
2346         if (ignore_submodules)
2347                 rev_info.diffopt.flags.ignore_submodules = 1;
2348         rev_info.diffopt.flags.quick = 1;
2349
2350         add_head_to_pending(&rev_info);
2351         if (!rev_info.pending.nr) {
2352                 /*
2353                  * We have no head (or it's corrupt); use the empty tree,
2354                  * which will complain if the index is non-empty.
2355                  */
2356                 struct tree *tree = lookup_tree(r, the_hash_algo->empty_tree);
2357                 add_pending_object(&rev_info, &tree->object, "");
2358         }
2359
2360         diff_setup_done(&rev_info.diffopt);
2361         result = run_diff_index(&rev_info, 1);
2362         return diff_result_code(&rev_info.diffopt, result);
2363 }
2364
2365 /**
2366  * If the work tree has unstaged or uncommitted changes, dies with the
2367  * appropriate message.
2368  */
2369 int require_clean_work_tree(struct repository *r,
2370                             const char *action,
2371                             const char *hint,
2372                             int ignore_submodules,
2373                             int gently)
2374 {
2375         struct lock_file lock_file = LOCK_INIT;
2376         int err = 0, fd;
2377
2378         fd = repo_hold_locked_index(r, &lock_file, 0);
2379         refresh_index(r->index, REFRESH_QUIET, NULL, NULL, NULL);
2380         if (0 <= fd)
2381                 repo_update_index_if_able(r, &lock_file);
2382         rollback_lock_file(&lock_file);
2383
2384         if (has_unstaged_changes(r, ignore_submodules)) {
2385                 /* TRANSLATORS: the action is e.g. "pull with rebase" */
2386                 error(_("cannot %s: You have unstaged changes."), _(action));
2387                 err = 1;
2388         }
2389
2390         if (has_uncommitted_changes(r, ignore_submodules)) {
2391                 if (err)
2392                         error(_("additionally, your index contains uncommitted changes."));
2393                 else
2394                         error(_("cannot %s: Your index contains uncommitted changes."),
2395                               _(action));
2396                 err = 1;
2397         }
2398
2399         if (err) {
2400                 if (hint)
2401                         error("%s", hint);
2402                 if (!gently)
2403                         exit(128);
2404         }
2405
2406         return err;
2407 }