git.oblomov.eu Git - git/blob - wt-status.c

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