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