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