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

   1 #include "cache.h"
   2 #include "pathspec.h"
   3 #include "wt-status.h"
   4 #include "object.h"
   5 #include "dir.h"
   6 #include "commit.h"
   7 #include "diff.h"
   8 #include "revision.h"
   9 #include "diffcore.h"
  10 #include "quote.h"
  11 #include "run-command.h"
  12 #include "argv-array.h"
  13 #include "remote.h"
  14 #include "refs.h"
  15 #include "submodule.h"
  16 #include "column.h"
  17 #include "strbuf.h"
  18 #include "utf8.h"
  19
  20 static char default_wt_status_colors[][COLOR_MAXLEN] = {
  21         GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
  22         GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
  23         GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
  24         GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
  25         GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
  26         GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
  27         GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
  28         GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
  29         GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
  30 };
  31
  32 static const char *color(int slot, struct wt_status *s)
  33 {
  34         const char *c = "";
  35         if (want_color(s->use_color))
  36                 c = s->color_palette[slot];
  37         if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
  38                 c = s->color_palette[WT_STATUS_HEADER];
  39         return c;
  40 }
  41
  42 static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
  43                 const char *fmt, va_list ap, const char *trail)
  44 {
  45         struct strbuf sb = STRBUF_INIT;
  46         struct strbuf linebuf = STRBUF_INIT;
  47         const char *line, *eol;
  48
  49         strbuf_vaddf(&sb, fmt, ap);
  50         if (!sb.len) {
  51                 if (s->display_comment_prefix) {
  52                         strbuf_addch(&sb, comment_line_char);
  53                         if (!trail)
  54                                 strbuf_addch(&sb, ' ');
  55                 }
  56                 color_print_strbuf(s->fp, color, &sb);
  57                 if (trail)
  58                         fprintf(s->fp, "%s", trail);
  59                 strbuf_release(&sb);
  60                 return;
  61         }
  62         for (line = sb.buf; *line; line = eol + 1) {
  63                 eol = strchr(line, '\n');
  64
  65                 strbuf_reset(&linebuf);
  66                 if (at_bol && s->display_comment_prefix) {
  67                         strbuf_addch(&linebuf, comment_line_char);
  68                         if (*line != '\n' && *line != '\t')
  69                                 strbuf_addch(&linebuf, ' ');
  70                 }
  71                 if (eol)
  72                         strbuf_add(&linebuf, line, eol - line);
  73                 else
  74                         strbuf_addstr(&linebuf, line);
  75                 color_print_strbuf(s->fp, color, &linebuf);
  76                 if (eol)
  77                         fprintf(s->fp, "\n");
  78                 else
  79                         break;
  80                 at_bol = 1;
  81         }
  82         if (trail)
  83                 fprintf(s->fp, "%s", trail);
  84         strbuf_release(&linebuf);
  85         strbuf_release(&sb);
  86 }
  87
  88 void status_printf_ln(struct wt_status *s, const char *color,
  89                         const char *fmt, ...)
  90 {
  91         va_list ap;
  92
  93         va_start(ap, fmt);
  94         status_vprintf(s, 1, color, fmt, ap, "\n");
  95         va_end(ap);
  96 }
  97
  98 void status_printf(struct wt_status *s, const char *color,
  99                         const char *fmt, ...)
 100 {
 101         va_list ap;
 102
 103         va_start(ap, fmt);
 104         status_vprintf(s, 1, color, fmt, ap, NULL);
 105         va_end(ap);
 106 }
 107
 108 static void status_printf_more(struct wt_status *s, const char *color,
 109                                const char *fmt, ...)
 110 {
 111         va_list ap;
 112
 113         va_start(ap, fmt);
 114         status_vprintf(s, 0, color, fmt, ap, NULL);
 115         va_end(ap);
 116 }
 117
 118 void wt_status_prepare(struct wt_status *s)
 119 {
 120         unsigned char sha1[20];
 121
 122         memset(s, 0, sizeof(*s));
 123         memcpy(s->color_palette, default_wt_status_colors,
 124                sizeof(default_wt_status_colors));
 125         s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 126         s->use_color = -1;
 127         s->relative_paths = 1;
 128         s->branch = resolve_refdup("HEAD", sha1, 0, NULL);
 129         s->reference = "HEAD";
 130         s->fp = stdout;
 131         s->index_file = get_index_file();
 132         s->change.strdup_strings = 1;
 133         s->untracked.strdup_strings = 1;
 134         s->ignored.strdup_strings = 1;
 135         s->show_branch = -1;  /* unspecified */
 136         s->display_comment_prefix = 0;
 137 }
 138
 139 static void wt_status_print_unmerged_header(struct wt_status *s)
 140 {
 141         int i;
 142         int del_mod_conflict = 0;
 143         int both_deleted = 0;
 144         int not_deleted = 0;
 145         const char *c = color(WT_STATUS_HEADER, s);
 146
 147         status_printf_ln(s, c, _("Unmerged paths:"));
 148
 149         for (i = 0; i < s->change.nr; i++) {
 150                 struct string_list_item *it = &(s->change.items[i]);
 151                 struct wt_status_change_data *d = it->util;
 152
 153                 switch (d->stagemask) {
 154                 case 0:
 155                         break;
 156                 case 1:
 157                         both_deleted = 1;
 158                         break;
 159                 case 3:
 160                 case 5:
 161                         del_mod_conflict = 1;
 162                         break;
 163                 default:
 164                         not_deleted = 1;
 165                         break;
 166                 }
 167         }
 168
 169         if (!s->hints)
 170                 return;
 171         if (s->whence != FROM_COMMIT)
 172                 ;
 173         else if (!s->is_initial)
 174                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 175         else
 176                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 177
 178         if (!both_deleted) {
 179                 if (!del_mod_conflict)
 180                         status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
 181                 else
 182                         status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 183         } else if (!del_mod_conflict && !not_deleted) {
 184                 status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
 185         } else {
 186                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 187         }
 188         status_printf_ln(s, c, "");
 189 }
 190
 191 static void wt_status_print_cached_header(struct wt_status *s)
 192 {
 193         const char *c = color(WT_STATUS_HEADER, s);
 194
 195         status_printf_ln(s, c, _("Changes to be committed:"));
 196         if (!s->hints)
 197                 return;
 198         if (s->whence != FROM_COMMIT)
 199                 ; /* NEEDSWORK: use "git reset --unresolve"??? */
 200         else if (!s->is_initial)
 201                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 202         else
 203                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 204         status_printf_ln(s, c, "");
 205 }
 206
 207 static void wt_status_print_dirty_header(struct wt_status *s,
 208                                          int has_deleted,
 209                                          int has_dirty_submodules)
 210 {
 211         const char *c = color(WT_STATUS_HEADER, s);
 212
 213         status_printf_ln(s, c, _("Changes not staged for commit:"));
 214         if (!s->hints)
 215                 return;
 216         if (!has_deleted)
 217                 status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
 218         else
 219                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
 220         status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
 221         if (has_dirty_submodules)
 222                 status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
 223         status_printf_ln(s, c, "");
 224 }
 225
 226 static void wt_status_print_other_header(struct wt_status *s,
 227                                          const char *what,
 228                                          const char *how)
 229 {
 230         const char *c = color(WT_STATUS_HEADER, s);
 231         status_printf_ln(s, c, "%s:", what);
 232         if (!s->hints)
 233                 return;
 234         status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
 235         status_printf_ln(s, c, "");
 236 }
 237
 238 static void wt_status_print_trailer(struct wt_status *s)
 239 {
 240         status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
 241 }
 242
 243 #define quote_path quote_path_relative
 244
 245 static void wt_status_print_unmerged_data(struct wt_status *s,
 246                                           struct string_list_item *it)
 247 {
 248         const char *c = color(WT_STATUS_UNMERGED, s);
 249         struct wt_status_change_data *d = it->util;
 250         struct strbuf onebuf = STRBUF_INIT;
 251         const char *one, *how = _("bug");
 252
 253         one = quote_path(it->string, s->prefix, &onebuf);
 254         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 255         switch (d->stagemask) {
 256         case 1: how = _("both deleted:"); break;
 257         case 2: how = _("added by us:"); break;
 258         case 3: how = _("deleted by them:"); break;
 259         case 4: how = _("added by them:"); break;
 260         case 5: how = _("deleted by us:"); break;
 261         case 6: how = _("both added:"); break;
 262         case 7: how = _("both modified:"); break;
 263         }
 264         status_printf_more(s, c, "%-20s%s\n", how, one);
 265         strbuf_release(&onebuf);
 266 }
 267
 268 static const char *wt_status_diff_status_string(int status)
 269 {
 270         switch (status) {
 271         case DIFF_STATUS_ADDED:
 272                 return _("new file");
 273         case DIFF_STATUS_COPIED:
 274                 return _("copied");
 275         case DIFF_STATUS_DELETED:
 276                 return _("deleted");
 277         case DIFF_STATUS_MODIFIED:
 278                 return _("modified");
 279         case DIFF_STATUS_RENAMED:
 280                 return _("renamed");
 281         case DIFF_STATUS_TYPE_CHANGED:
 282                 return _("typechange");
 283         case DIFF_STATUS_UNKNOWN:
 284                 return _("unknown");
 285         case DIFF_STATUS_UNMERGED:
 286                 return _("unmerged");
 287         default:
 288                 return NULL;
 289         }
 290 }
 291
 292 static void wt_status_print_change_data(struct wt_status *s,
 293                                         int change_type,
 294                                         struct string_list_item *it)
 295 {
 296         struct wt_status_change_data *d = it->util;
 297         const char *c = color(change_type, s);
 298         int status;
 299         char *one_name;
 300         char *two_name;
 301         const char *one, *two;
 302         struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
 303         struct strbuf extra = STRBUF_INIT;
 304         static char *padding;
 305         const char *what;
 306         int len;
 307
 308         if (!padding) {
 309                 int width = 0;
 310                 /* If DIFF_STATUS_* uses outside this range, we're in trouble */
 311                 for (status = 'A'; status <= 'Z'; status++) {
 312                         what = wt_status_diff_status_string(status);
 313                         len = what ? strlen(what) : 0;
 314                         if (len > width)
 315                                 width = len;
 316                 }
 317                 width += 2;     /* colon and a space */
 318                 padding = xmallocz(width);
 319                 memset(padding, ' ', width);
 320         }
 321
 322         one_name = two_name = it->string;
 323         switch (change_type) {
 324         case WT_STATUS_UPDATED:
 325                 status = d->index_status;
 326                 if (d->head_path)
 327                         one_name = d->head_path;
 328                 break;
 329         case WT_STATUS_CHANGED:
 330                 if (d->new_submodule_commits || d->dirty_submodule) {
 331                         strbuf_addstr(&extra, " (");
 332                         if (d->new_submodule_commits)
 333                                 strbuf_addf(&extra, _("new commits, "));
 334                         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 335                                 strbuf_addf(&extra, _("modified content, "));
 336                         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 337                                 strbuf_addf(&extra, _("untracked content, "));
 338                         strbuf_setlen(&extra, extra.len - 2);
 339                         strbuf_addch(&extra, ')');
 340                 }
 341                 status = d->worktree_status;
 342                 break;
 343         default:
 344                 die("BUG: unhandled change_type %d in wt_status_print_change_data",
 345                     change_type);
 346         }
 347
 348         one = quote_path(one_name, s->prefix, &onebuf);
 349         two = quote_path(two_name, s->prefix, &twobuf);
 350
 351         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 352         what = wt_status_diff_status_string(status);
 353         if (!what)
 354                 die(_("bug: unhandled diff status %c"), status);
 355         /* 1 for colon, which is not part of "what" */
 356         len = strlen(padding) - (utf8_strwidth(what) + 1);
 357         assert(len >= 0);
 358         if (status == DIFF_STATUS_COPIED || status == DIFF_STATUS_RENAMED)
 359                 status_printf_more(s, c, "%s:%.*s%s -> %s",
 360                                    what, len, padding, one, two);
 361         else
 362                 status_printf_more(s, c, "%s:%.*s%s",
 363                                    what, len, padding, one);
 364         if (extra.len) {
 365                 status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 366                 strbuf_release(&extra);
 367         }
 368         status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 369         strbuf_release(&onebuf);
 370         strbuf_release(&twobuf);
 371 }
 372
 373 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 374                                          struct diff_options *options,
 375                                          void *data)
 376 {
 377         struct wt_status *s = data;
 378         int i;
 379
 380         if (!q->nr)
 381                 return;
 382         s->workdir_dirty = 1;
 383         for (i = 0; i < q->nr; i++) {
 384                 struct diff_filepair *p;
 385                 struct string_list_item *it;
 386                 struct wt_status_change_data *d;
 387
 388                 p = q->queue[i];
 389                 it = string_list_insert(&s->change, p->one->path);
 390                 d = it->util;
 391                 if (!d) {
 392                         d = xcalloc(1, sizeof(*d));
 393                         it->util = d;
 394                 }
 395                 if (!d->worktree_status)
 396                         d->worktree_status = p->status;
 397                 d->dirty_submodule = p->two->dirty_submodule;
 398                 if (S_ISGITLINK(p->two->mode))
 399                         d->new_submodule_commits = !!hashcmp(p->one->sha1, p->two->sha1);
 400         }
 401 }
 402
 403 static int unmerged_mask(const char *path)
 404 {
 405         int pos, mask;
 406         const struct cache_entry *ce;
 407
 408         pos = cache_name_pos(path, strlen(path));
 409         if (0 <= pos)
 410                 return 0;
 411
 412         mask = 0;
 413         pos = -pos-1;
 414         while (pos < active_nr) {
 415                 ce = active_cache[pos++];
 416                 if (strcmp(ce->name, path) || !ce_stage(ce))
 417                         break;
 418                 mask |= (1 << (ce_stage(ce) - 1));
 419         }
 420         return mask;
 421 }
 422
 423 static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 424                                          struct diff_options *options,
 425                                          void *data)
 426 {
 427         struct wt_status *s = data;
 428         int i;
 429
 430         for (i = 0; i < q->nr; i++) {
 431                 struct diff_filepair *p;
 432                 struct string_list_item *it;
 433                 struct wt_status_change_data *d;
 434
 435                 p = q->queue[i];
 436                 it = string_list_insert(&s->change, p->two->path);
 437                 d = it->util;
 438                 if (!d) {
 439                         d = xcalloc(1, sizeof(*d));
 440                         it->util = d;
 441                 }
 442                 if (!d->index_status)
 443                         d->index_status = p->status;
 444                 switch (p->status) {
 445                 case DIFF_STATUS_COPIED:
 446                 case DIFF_STATUS_RENAMED:
 447                         d->head_path = xstrdup(p->one->path);
 448                         break;
 449                 case DIFF_STATUS_UNMERGED:
 450                         d->stagemask = unmerged_mask(p->two->path);
 451                         break;
 452                 }
 453         }
 454 }
 455
 456 static void wt_status_collect_changes_worktree(struct wt_status *s)
 457 {
 458         struct rev_info rev;
 459
 460         init_revisions(&rev, NULL);
 461         setup_revisions(0, NULL, &rev, NULL);
 462         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 463         DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
 464         if (!s->show_untracked_files)
 465                 DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
 466         if (s->ignore_submodule_arg) {
 467                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 468                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 469         }
 470         rev.diffopt.format_callback = wt_status_collect_changed_cb;
 471         rev.diffopt.format_callback_data = s;
 472         copy_pathspec(&rev.prune_data, &s->pathspec);
 473         run_diff_files(&rev, 0);
 474 }
 475
 476 static void wt_status_collect_changes_index(struct wt_status *s)
 477 {
 478         struct rev_info rev;
 479         struct setup_revision_opt opt;
 480
 481         init_revisions(&rev, NULL);
 482         memset(&opt, 0, sizeof(opt));
 483         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 484         setup_revisions(0, NULL, &rev, &opt);
 485
 486         if (s->ignore_submodule_arg) {
 487                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 488                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 489         }
 490
 491         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 492         rev.diffopt.format_callback = wt_status_collect_updated_cb;
 493         rev.diffopt.format_callback_data = s;
 494         rev.diffopt.detect_rename = 1;
 495         rev.diffopt.rename_limit = 200;
 496         rev.diffopt.break_opt = 0;
 497         copy_pathspec(&rev.prune_data, &s->pathspec);
 498         run_diff_index(&rev, 1);
 499 }
 500
 501 static void wt_status_collect_changes_initial(struct wt_status *s)
 502 {
 503         int i;
 504
 505         for (i = 0; i < active_nr; i++) {
 506                 struct string_list_item *it;
 507                 struct wt_status_change_data *d;
 508                 const struct cache_entry *ce = active_cache[i];
 509
 510                 if (!ce_path_match(ce, &s->pathspec))
 511                         continue;
 512                 it = string_list_insert(&s->change, ce->name);
 513                 d = it->util;
 514                 if (!d) {
 515                         d = xcalloc(1, sizeof(*d));
 516                         it->util = d;
 517                 }
 518                 if (ce_stage(ce)) {
 519                         d->index_status = DIFF_STATUS_UNMERGED;
 520                         d->stagemask |= (1 << (ce_stage(ce) - 1));
 521                 }
 522                 else
 523                         d->index_status = DIFF_STATUS_ADDED;
 524         }
 525 }
 526
 527 static void wt_status_collect_untracked(struct wt_status *s)
 528 {
 529         int i;
 530         struct dir_struct dir;
 531         struct timeval t_begin;
 532
 533         if (!s->show_untracked_files)
 534                 return;
 535
 536         if (advice_status_u_option)
 537                 gettimeofday(&t_begin, NULL);
 538
 539         memset(&dir, 0, sizeof(dir));
 540         if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 541                 dir.flags |=
 542                         DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 543         if (s->show_ignored_files)
 544                 dir.flags |= DIR_SHOW_IGNORED_TOO;
 545         setup_standard_excludes(&dir);
 546
 547         fill_directory(&dir, &s->pathspec);
 548
 549         for (i = 0; i < dir.nr; i++) {
 550                 struct dir_entry *ent = dir.entries[i];
 551                 if (cache_name_is_other(ent->name, ent->len) &&
 552                     match_pathspec_depth(&s->pathspec, ent->name, ent->len, 0, NULL))
 553                         string_list_insert(&s->untracked, ent->name);
 554                 free(ent);
 555         }
 556
 557         for (i = 0; i < dir.ignored_nr; i++) {
 558                 struct dir_entry *ent = dir.ignored[i];
 559                 if (cache_name_is_other(ent->name, ent->len) &&
 560                     match_pathspec_depth(&s->pathspec, ent->name, ent->len, 0, NULL))
 561                         string_list_insert(&s->ignored, ent->name);
 562                 free(ent);
 563         }
 564
 565         free(dir.entries);
 566         free(dir.ignored);
 567         clear_directory(&dir);
 568
 569         if (advice_status_u_option) {
 570                 struct timeval t_end;
 571                 gettimeofday(&t_end, NULL);
 572                 s->untracked_in_ms =
 573                         (uint64_t)t_end.tv_sec * 1000 + t_end.tv_usec / 1000 -
 574                         ((uint64_t)t_begin.tv_sec * 1000 + t_begin.tv_usec / 1000);
 575         }
 576 }
 577
 578 void wt_status_collect(struct wt_status *s)
 579 {
 580         wt_status_collect_changes_worktree(s);
 581
 582         if (s->is_initial)
 583                 wt_status_collect_changes_initial(s);
 584         else
 585                 wt_status_collect_changes_index(s);
 586         wt_status_collect_untracked(s);
 587 }
 588
 589 static void wt_status_print_unmerged(struct wt_status *s)
 590 {
 591         int shown_header = 0;
 592         int i;
 593
 594         for (i = 0; i < s->change.nr; i++) {
 595                 struct wt_status_change_data *d;
 596                 struct string_list_item *it;
 597                 it = &(s->change.items[i]);
 598                 d = it->util;
 599                 if (!d->stagemask)
 600                         continue;
 601                 if (!shown_header) {
 602                         wt_status_print_unmerged_header(s);
 603                         shown_header = 1;
 604                 }
 605                 wt_status_print_unmerged_data(s, it);
 606         }
 607         if (shown_header)
 608                 wt_status_print_trailer(s);
 609
 610 }
 611
 612 static void wt_status_print_updated(struct wt_status *s)
 613 {
 614         int shown_header = 0;
 615         int i;
 616
 617         for (i = 0; i < s->change.nr; i++) {
 618                 struct wt_status_change_data *d;
 619                 struct string_list_item *it;
 620                 it = &(s->change.items[i]);
 621                 d = it->util;
 622                 if (!d->index_status ||
 623                     d->index_status == DIFF_STATUS_UNMERGED)
 624                         continue;
 625                 if (!shown_header) {
 626                         wt_status_print_cached_header(s);
 627                         s->commitable = 1;
 628                         shown_header = 1;
 629                 }
 630                 wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
 631         }
 632         if (shown_header)
 633                 wt_status_print_trailer(s);
 634 }
 635
 636 /*
 637  * -1 : has delete
 638  *  0 : no change
 639  *  1 : some change but no delete
 640  */
 641 static int wt_status_check_worktree_changes(struct wt_status *s,
 642                                              int *dirty_submodules)
 643 {
 644         int i;
 645         int changes = 0;
 646
 647         *dirty_submodules = 0;
 648
 649         for (i = 0; i < s->change.nr; i++) {
 650                 struct wt_status_change_data *d;
 651                 d = s->change.items[i].util;
 652                 if (!d->worktree_status ||
 653                     d->worktree_status == DIFF_STATUS_UNMERGED)
 654                         continue;
 655                 if (!changes)
 656                         changes = 1;
 657                 if (d->dirty_submodule)
 658                         *dirty_submodules = 1;
 659                 if (d->worktree_status == DIFF_STATUS_DELETED)
 660                         changes = -1;
 661         }
 662         return changes;
 663 }
 664
 665 static void wt_status_print_changed(struct wt_status *s)
 666 {
 667         int i, dirty_submodules;
 668         int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 669
 670         if (!worktree_changes)
 671                 return;
 672
 673         wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 674
 675         for (i = 0; i < s->change.nr; i++) {
 676                 struct wt_status_change_data *d;
 677                 struct string_list_item *it;
 678                 it = &(s->change.items[i]);
 679                 d = it->util;
 680                 if (!d->worktree_status ||
 681                     d->worktree_status == DIFF_STATUS_UNMERGED)
 682                         continue;
 683                 wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
 684         }
 685         wt_status_print_trailer(s);
 686 }
 687
 688 static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
 689 {
 690         struct child_process sm_summary;
 691         char summary_limit[64];
 692         char index[PATH_MAX];
 693         const char *env[] = { NULL, NULL };
 694         struct argv_array argv = ARGV_ARRAY_INIT;
 695         struct strbuf cmd_stdout = STRBUF_INIT;
 696         struct strbuf summary = STRBUF_INIT;
 697         char *summary_content;
 698         size_t len;
 699
 700         sprintf(summary_limit, "%d", s->submodule_summary);
 701         snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", s->index_file);
 702
 703         env[0] = index;
 704         argv_array_push(&argv, "submodule");
 705         argv_array_push(&argv, "summary");
 706         argv_array_push(&argv, uncommitted ? "--files" : "--cached");
 707         argv_array_push(&argv, "--for-status");
 708         argv_array_push(&argv, "--summary-limit");
 709         argv_array_push(&argv, summary_limit);
 710         if (!uncommitted)
 711                 argv_array_push(&argv, s->amend ? "HEAD^" : "HEAD");
 712
 713         memset(&sm_summary, 0, sizeof(sm_summary));
 714         sm_summary.argv = argv.argv;
 715         sm_summary.env = env;
 716         sm_summary.git_cmd = 1;
 717         sm_summary.no_stdin = 1;
 718         fflush(s->fp);
 719         sm_summary.out = -1;
 720
 721         run_command(&sm_summary);
 722         argv_array_clear(&argv);
 723
 724         len = strbuf_read(&cmd_stdout, sm_summary.out, 1024);
 725
 726         /* prepend header, only if there's an actual output */
 727         if (len) {
 728                 if (uncommitted)
 729                         strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 730                 else
 731                         strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 732                 strbuf_addstr(&summary, "\n\n");
 733         }
 734         strbuf_addbuf(&summary, &cmd_stdout);
 735         strbuf_release(&cmd_stdout);
 736
 737         if (s->display_comment_prefix) {
 738                 summary_content = strbuf_detach(&summary, &len);
 739                 strbuf_add_commented_lines(&summary, summary_content, len);
 740                 free(summary_content);
 741         }
 742
 743         fputs(summary.buf, s->fp);
 744         strbuf_release(&summary);
 745 }
 746
 747 static void wt_status_print_other(struct wt_status *s,
 748                                   struct string_list *l,
 749                                   const char *what,
 750                                   const char *how)
 751 {
 752         int i;
 753         struct strbuf buf = STRBUF_INIT;
 754         static struct string_list output = STRING_LIST_INIT_DUP;
 755         struct column_options copts;
 756
 757         if (!l->nr)
 758                 return;
 759
 760         wt_status_print_other_header(s, what, how);
 761
 762         for (i = 0; i < l->nr; i++) {
 763                 struct string_list_item *it;
 764                 const char *path;
 765                 it = &(l->items[i]);
 766                 path = quote_path(it->string, s->prefix, &buf);
 767                 if (column_active(s->colopts)) {
 768                         string_list_append(&output, path);
 769                         continue;
 770                 }
 771                 status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 772                 status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 773                                    "%s\n", path);
 774         }
 775
 776         strbuf_release(&buf);
 777         if (!column_active(s->colopts))
 778                 goto conclude;
 779
 780         strbuf_addf(&buf, "%s%s\t%s",
 781                     color(WT_STATUS_HEADER, s),
 782                     s->display_comment_prefix ? "#" : "",
 783                     color(WT_STATUS_UNTRACKED, s));
 784         memset(&copts, 0, sizeof(copts));
 785         copts.padding = 1;
 786         copts.indent = buf.buf;
 787         if (want_color(s->use_color))
 788                 copts.nl = GIT_COLOR_RESET "\n";
 789         print_columns(&output, s->colopts, &copts);
 790         string_list_clear(&output, 0);
 791         strbuf_release(&buf);
 792 conclude:
 793         status_printf_ln(s, GIT_COLOR_NORMAL, "");
 794 }
 795
 796 static void wt_status_print_verbose(struct wt_status *s)
 797 {
 798         struct rev_info rev;
 799         struct setup_revision_opt opt;
 800
 801         init_revisions(&rev, NULL);
 802         DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
 803
 804         memset(&opt, 0, sizeof(opt));
 805         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 806         setup_revisions(0, NULL, &rev, &opt);
 807
 808         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 809         rev.diffopt.detect_rename = 1;
 810         rev.diffopt.file = s->fp;
 811         rev.diffopt.close_file = 0;
 812         /*
 813          * If we're not going to stdout, then we definitely don't
 814          * want color, since we are going to the commit message
 815          * file (and even the "auto" setting won't work, since it
 816          * will have checked isatty on stdout).
 817          */
 818         if (s->fp != stdout)
 819                 rev.diffopt.use_color = 0;
 820         run_diff_index(&rev, 1);
 821 }
 822
 823 static void wt_status_print_tracking(struct wt_status *s)
 824 {
 825         struct strbuf sb = STRBUF_INIT;
 826         const char *cp, *ep;
 827         struct branch *branch;
 828         char comment_line_string[3];
 829         int i;
 830
 831         assert(s->branch && !s->is_initial);
 832         if (prefixcmp(s->branch, "refs/heads/"))
 833                 return;
 834         branch = branch_get(s->branch + 11);
 835         if (!format_tracking_info(branch, &sb))
 836                 return;
 837
 838         i = 0;
 839         if (s->display_comment_prefix) {
 840                 comment_line_string[i++] = comment_line_char;
 841                 comment_line_string[i++] = ' ';
 842         }
 843         comment_line_string[i] = '\0';
 844
 845         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
 846                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
 847                                  "%s%.*s", comment_line_string,
 848                                  (int)(ep - cp), cp);
 849         if (s->display_comment_prefix)
 850                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
 851                                  comment_line_char);
 852         else
 853                 fprintf_ln(s->fp, "");
 854 }
 855
 856 static int has_unmerged(struct wt_status *s)
 857 {
 858         int i;
 859
 860         for (i = 0; i < s->change.nr; i++) {
 861                 struct wt_status_change_data *d;
 862                 d = s->change.items[i].util;
 863                 if (d->stagemask)
 864                         return 1;
 865         }
 866         return 0;
 867 }
 868
 869 static void show_merge_in_progress(struct wt_status *s,
 870                                 struct wt_status_state *state,
 871                                 const char *color)
 872 {
 873         if (has_unmerged(s)) {
 874                 status_printf_ln(s, color, _("You have unmerged paths."));
 875                 if (s->hints)
 876                         status_printf_ln(s, color,
 877                                 _("  (fix conflicts and run \"git commit\")"));
 878         } else {
 879                 status_printf_ln(s, color,
 880                         _("All conflicts fixed but you are still merging."));
 881                 if (s->hints)
 882                         status_printf_ln(s, color,
 883                                 _("  (use \"git commit\" to conclude merge)"));
 884         }
 885         wt_status_print_trailer(s);
 886 }
 887
 888 static void show_am_in_progress(struct wt_status *s,
 889                                 struct wt_status_state *state,
 890                                 const char *color)
 891 {
 892         status_printf_ln(s, color,
 893                 _("You are in the middle of an am session."));
 894         if (state->am_empty_patch)
 895                 status_printf_ln(s, color,
 896                         _("The current patch is empty."));
 897         if (s->hints) {
 898                 if (!state->am_empty_patch)
 899                         status_printf_ln(s, color,
 900                                 _("  (fix conflicts and then run \"git am --continue\")"));
 901                 status_printf_ln(s, color,
 902                         _("  (use \"git am --skip\" to skip this patch)"));
 903                 status_printf_ln(s, color,
 904                         _("  (use \"git am --abort\" to restore the original branch)"));
 905         }
 906         wt_status_print_trailer(s);
 907 }
 908
 909 static char *read_line_from_git_path(const char *filename)
 910 {
 911         struct strbuf buf = STRBUF_INIT;
 912         FILE *fp = fopen(git_path("%s", filename), "r");
 913         if (!fp) {
 914                 strbuf_release(&buf);
 915                 return NULL;
 916         }
 917         strbuf_getline(&buf, fp, '\n');
 918         if (!fclose(fp)) {
 919                 return strbuf_detach(&buf, NULL);
 920         } else {
 921                 strbuf_release(&buf);
 922                 return NULL;
 923         }
 924 }
 925
 926 static int split_commit_in_progress(struct wt_status *s)
 927 {
 928         int split_in_progress = 0;
 929         char *head = read_line_from_git_path("HEAD");
 930         char *orig_head = read_line_from_git_path("ORIG_HEAD");
 931         char *rebase_amend = read_line_from_git_path("rebase-merge/amend");
 932         char *rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
 933
 934         if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
 935             !s->branch || strcmp(s->branch, "HEAD"))
 936                 return split_in_progress;
 937
 938         if (!strcmp(rebase_amend, rebase_orig_head)) {
 939                 if (strcmp(head, rebase_amend))
 940                         split_in_progress = 1;
 941         } else if (strcmp(orig_head, rebase_orig_head)) {
 942                 split_in_progress = 1;
 943         }
 944
 945         if (!s->amend && !s->nowarn && !s->workdir_dirty)
 946                 split_in_progress = 0;
 947
 948         free(head);
 949         free(orig_head);
 950         free(rebase_amend);
 951         free(rebase_orig_head);
 952         return split_in_progress;
 953 }
 954
 955 static void show_rebase_in_progress(struct wt_status *s,
 956                                 struct wt_status_state *state,
 957                                 const char *color)
 958 {
 959         struct stat st;
 960
 961         if (has_unmerged(s)) {
 962                 if (state->branch)
 963                         status_printf_ln(s, color,
 964                                          _("You are currently rebasing branch '%s' on '%s'."),
 965                                          state->branch,
 966                                          state->onto);
 967                 else
 968                         status_printf_ln(s, color,
 969                                          _("You are currently rebasing."));
 970                 if (s->hints) {
 971                         status_printf_ln(s, color,
 972                                 _("  (fix conflicts and then run \"git rebase --continue\")"));
 973                         status_printf_ln(s, color,
 974                                 _("  (use \"git rebase --skip\" to skip this patch)"));
 975                         status_printf_ln(s, color,
 976                                 _("  (use \"git rebase --abort\" to check out the original branch)"));
 977                 }
 978         } else if (state->rebase_in_progress || !stat(git_path("MERGE_MSG"), &st)) {
 979                 if (state->branch)
 980                         status_printf_ln(s, color,
 981                                          _("You are currently rebasing branch '%s' on '%s'."),
 982                                          state->branch,
 983                                          state->onto);
 984                 else
 985                         status_printf_ln(s, color,
 986                                          _("You are currently rebasing."));
 987                 if (s->hints)
 988                         status_printf_ln(s, color,
 989                                 _("  (all conflicts fixed: run \"git rebase --continue\")"));
 990         } else if (split_commit_in_progress(s)) {
 991                 if (state->branch)
 992                         status_printf_ln(s, color,
 993                                          _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
 994                                          state->branch,
 995                                          state->onto);
 996                 else
 997                         status_printf_ln(s, color,
 998                                          _("You are currently splitting a commit during a rebase."));
 999                 if (s->hints)
1000                         status_printf_ln(s, color,
1001                                 _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1002         } else {
1003                 if (state->branch)
1004                         status_printf_ln(s, color,
1005                                          _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1006                                          state->branch,
1007                                          state->onto);
1008                 else
1009                         status_printf_ln(s, color,
1010                                          _("You are currently editing a commit during a rebase."));
1011                 if (s->hints && !s->amend) {
1012                         status_printf_ln(s, color,
1013                                 _("  (use \"git commit --amend\" to amend the current commit)"));
1014                         status_printf_ln(s, color,
1015                                 _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1016                 }
1017         }
1018         wt_status_print_trailer(s);
1019 }
1020
1021 static void show_cherry_pick_in_progress(struct wt_status *s,
1022                                         struct wt_status_state *state,
1023                                         const char *color)
1024 {
1025         status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1026                         find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1027         if (s->hints) {
1028                 if (has_unmerged(s))
1029                         status_printf_ln(s, color,
1030                                 _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1031                 else
1032                         status_printf_ln(s, color,
1033                                 _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1034                 status_printf_ln(s, color,
1035                         _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1036         }
1037         wt_status_print_trailer(s);
1038 }
1039
1040 static void show_revert_in_progress(struct wt_status *s,
1041                                         struct wt_status_state *state,
1042                                         const char *color)
1043 {
1044         status_printf_ln(s, color, _("You are currently reverting commit %s."),
1045                          find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1046         if (s->hints) {
1047                 if (has_unmerged(s))
1048                         status_printf_ln(s, color,
1049                                 _("  (fix conflicts and run \"git revert --continue\")"));
1050                 else
1051                         status_printf_ln(s, color,
1052                                 _("  (all conflicts fixed: run \"git revert --continue\")"));
1053                 status_printf_ln(s, color,
1054                         _("  (use \"git revert --abort\" to cancel the revert operation)"));
1055         }
1056         wt_status_print_trailer(s);
1057 }
1058
1059 static void show_bisect_in_progress(struct wt_status *s,
1060                                 struct wt_status_state *state,
1061                                 const char *color)
1062 {
1063         if (state->branch)
1064                 status_printf_ln(s, color,
1065                                  _("You are currently bisecting, started from branch '%s'."),
1066                                  state->branch);
1067         else
1068                 status_printf_ln(s, color,
1069                                  _("You are currently bisecting."));
1070         if (s->hints)
1071                 status_printf_ln(s, color,
1072                         _("  (use \"git bisect reset\" to get back to the original branch)"));
1073         wt_status_print_trailer(s);
1074 }
1075
1076 /*
1077  * Extract branch information from rebase/bisect
1078  */
1079 static char *read_and_strip_branch(const char *path)
1080 {
1081         struct strbuf sb = STRBUF_INIT;
1082         unsigned char sha1[20];
1083
1084         if (strbuf_read_file(&sb, git_path("%s", path), 0) <= 0)
1085                 goto got_nothing;
1086
1087         while (&sb.len && sb.buf[sb.len - 1] == '\n')
1088                 strbuf_setlen(&sb, sb.len - 1);
1089         if (!sb.len)
1090                 goto got_nothing;
1091         if (!prefixcmp(sb.buf, "refs/heads/"))
1092                 strbuf_remove(&sb,0, strlen("refs/heads/"));
1093         else if (!prefixcmp(sb.buf, "refs/"))
1094                 ;
1095         else if (!get_sha1_hex(sb.buf, sha1)) {
1096                 const char *abbrev;
1097                 abbrev = find_unique_abbrev(sha1, DEFAULT_ABBREV);
1098                 strbuf_reset(&sb);
1099                 strbuf_addstr(&sb, abbrev);
1100         } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1101                 goto got_nothing;
1102         else                    /* bisect */
1103                 ;
1104         return strbuf_detach(&sb, NULL);
1105
1106 got_nothing:
1107         strbuf_release(&sb);
1108         return NULL;
1109 }
1110
1111 struct grab_1st_switch_cbdata {
1112         struct strbuf buf;
1113         unsigned char nsha1[20];
1114 };
1115
1116 static int grab_1st_switch(unsigned char *osha1, unsigned char *nsha1,
1117                            const char *email, unsigned long timestamp, int tz,
1118                            const char *message, void *cb_data)
1119 {
1120         struct grab_1st_switch_cbdata *cb = cb_data;
1121         const char *target = NULL, *end;
1122
1123         if (prefixcmp(message, "checkout: moving from "))
1124                 return 0;
1125         message += strlen("checkout: moving from ");
1126         target = strstr(message, " to ");
1127         if (!target)
1128                 return 0;
1129         target += strlen(" to ");
1130         strbuf_reset(&cb->buf);
1131         hashcpy(cb->nsha1, nsha1);
1132         for (end = target; *end && *end != '\n'; end++)
1133                 ;
1134         strbuf_add(&cb->buf, target, end - target);
1135         return 1;
1136 }
1137
1138 static void wt_status_get_detached_from(struct wt_status_state *state)
1139 {
1140         struct grab_1st_switch_cbdata cb;
1141         struct commit *commit;
1142         unsigned char sha1[20];
1143         char *ref = NULL;
1144
1145         strbuf_init(&cb.buf, 0);
1146         if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1147                 strbuf_release(&cb.buf);
1148                 return;
1149         }
1150
1151         if (dwim_ref(cb.buf.buf, cb.buf.len, sha1, &ref) == 1 &&
1152             /* sha1 is a commit? match without further lookup */
1153             (!hashcmp(cb.nsha1, sha1) ||
1154              /* perhaps sha1 is a tag, try to dereference to a commit */
1155              ((commit = lookup_commit_reference_gently(sha1, 1)) != NULL &&
1156               !hashcmp(cb.nsha1, commit->object.sha1)))) {
1157                 int ofs;
1158                 if (!prefixcmp(ref, "refs/tags/"))
1159                         ofs = strlen("refs/tags/");
1160                 else if (!prefixcmp(ref, "refs/remotes/"))
1161                         ofs = strlen("refs/remotes/");
1162                 else
1163                         ofs = 0;
1164                 state->detached_from = xstrdup(ref + ofs);
1165         } else
1166                 state->detached_from =
1167                         xstrdup(find_unique_abbrev(cb.nsha1, DEFAULT_ABBREV));
1168         hashcpy(state->detached_sha1, cb.nsha1);
1169
1170         free(ref);
1171         strbuf_release(&cb.buf);
1172 }
1173
1174 void wt_status_get_state(struct wt_status_state *state,
1175                          int get_detached_from)
1176 {
1177         struct stat st;
1178         unsigned char sha1[20];
1179
1180         if (!stat(git_path("MERGE_HEAD"), &st)) {
1181                 state->merge_in_progress = 1;
1182         } else if (!stat(git_path("rebase-apply"), &st)) {
1183                 if (!stat(git_path("rebase-apply/applying"), &st)) {
1184                         state->am_in_progress = 1;
1185                         if (!stat(git_path("rebase-apply/patch"), &st) && !st.st_size)
1186                                 state->am_empty_patch = 1;
1187                 } else {
1188                         state->rebase_in_progress = 1;
1189                         state->branch = read_and_strip_branch("rebase-apply/head-name");
1190                         state->onto = read_and_strip_branch("rebase-apply/onto");
1191                 }
1192         } else if (!stat(git_path("rebase-merge"), &st)) {
1193                 if (!stat(git_path("rebase-merge/interactive"), &st))
1194                         state->rebase_interactive_in_progress = 1;
1195                 else
1196                         state->rebase_in_progress = 1;
1197                 state->branch = read_and_strip_branch("rebase-merge/head-name");
1198                 state->onto = read_and_strip_branch("rebase-merge/onto");
1199         } else if (!stat(git_path("CHERRY_PICK_HEAD"), &st) &&
1200                         !get_sha1("CHERRY_PICK_HEAD", sha1)) {
1201                 state->cherry_pick_in_progress = 1;
1202                 hashcpy(state->cherry_pick_head_sha1, sha1);
1203         }
1204         if (!stat(git_path("BISECT_LOG"), &st)) {
1205                 state->bisect_in_progress = 1;
1206                 state->branch = read_and_strip_branch("BISECT_START");
1207         }
1208         if (!stat(git_path("REVERT_HEAD"), &st) &&
1209             !get_sha1("REVERT_HEAD", sha1)) {
1210                 state->revert_in_progress = 1;
1211                 hashcpy(state->revert_head_sha1, sha1);
1212         }
1213
1214         if (get_detached_from)
1215                 wt_status_get_detached_from(state);
1216 }
1217
1218 static void wt_status_print_state(struct wt_status *s,
1219                                   struct wt_status_state *state)
1220 {
1221         const char *state_color = color(WT_STATUS_HEADER, s);
1222         if (state->merge_in_progress)
1223                 show_merge_in_progress(s, state, state_color);
1224         else if (state->am_in_progress)
1225                 show_am_in_progress(s, state, state_color);
1226         else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1227                 show_rebase_in_progress(s, state, state_color);
1228         else if (state->cherry_pick_in_progress)
1229                 show_cherry_pick_in_progress(s, state, state_color);
1230         else if (state->revert_in_progress)
1231                 show_revert_in_progress(s, state, state_color);
1232         if (state->bisect_in_progress)
1233                 show_bisect_in_progress(s, state, state_color);
1234 }
1235
1236 void wt_status_print(struct wt_status *s)
1237 {
1238         const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1239         const char *branch_status_color = color(WT_STATUS_HEADER, s);
1240         struct wt_status_state state;
1241
1242         memset(&state, 0, sizeof(state));
1243         wt_status_get_state(&state,
1244                             s->branch && !strcmp(s->branch, "HEAD"));
1245
1246         if (s->branch) {
1247                 const char *on_what = _("On branch ");
1248                 const char *branch_name = s->branch;
1249                 if (!prefixcmp(branch_name, "refs/heads/"))
1250                         branch_name += 11;
1251                 else if (!strcmp(branch_name, "HEAD")) {
1252                         branch_status_color = color(WT_STATUS_NOBRANCH, s);
1253                         if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1254                                 on_what = _("rebase in progress; onto ");
1255                                 branch_name = state.onto;
1256                         } else if (state.detached_from) {
1257                                 unsigned char sha1[20];
1258                                 branch_name = state.detached_from;
1259                                 if (!get_sha1("HEAD", sha1) &&
1260                                     !hashcmp(sha1, state.detached_sha1))
1261                                         on_what = _("HEAD detached at ");
1262                                 else
1263                                         on_what = _("HEAD detached from ");
1264                         } else {
1265                                 branch_name = "";
1266                                 on_what = _("Not currently on any branch.");
1267                         }
1268                 }
1269                 status_printf(s, color(WT_STATUS_HEADER, s), "");
1270                 status_printf_more(s, branch_status_color, "%s", on_what);
1271                 status_printf_more(s, branch_color, "%s\n", branch_name);
1272                 if (!s->is_initial)
1273                         wt_status_print_tracking(s);
1274         }
1275
1276         wt_status_print_state(s, &state);
1277         free(state.branch);
1278         free(state.onto);
1279         free(state.detached_from);
1280
1281         if (s->is_initial) {
1282                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
1283                 status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
1284                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
1285         }
1286
1287         wt_status_print_updated(s);
1288         wt_status_print_unmerged(s);
1289         wt_status_print_changed(s);
1290         if (s->submodule_summary &&
1291             (!s->ignore_submodule_arg ||
1292              strcmp(s->ignore_submodule_arg, "all"))) {
1293                 wt_status_print_submodule_summary(s, 0);  /* staged */
1294                 wt_status_print_submodule_summary(s, 1);  /* unstaged */
1295         }
1296         if (s->show_untracked_files) {
1297                 wt_status_print_other(s, &s->untracked, _("Untracked files"), "add");
1298                 if (s->show_ignored_files)
1299                         wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1300                 if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1301                         status_printf_ln(s, GIT_COLOR_NORMAL, "");
1302                         status_printf_ln(s, GIT_COLOR_NORMAL,
1303                                          _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1304                                            "may speed it up, but you have to be careful not to forget to add\n"
1305                                            "new files yourself (see 'git help status')."),
1306                                          s->untracked_in_ms / 1000.0);
1307                 }
1308         } else if (s->commitable)
1309                 status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1310                         s->hints
1311                         ? _(" (use -u option to show untracked files)") : "");
1312
1313         if (s->verbose)
1314                 wt_status_print_verbose(s);
1315         if (!s->commitable) {
1316                 if (s->amend)
1317                         status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1318                 else if (s->nowarn)
1319                         ; /* nothing */
1320                 else if (s->workdir_dirty) {
1321                         if (s->hints)
1322                                 printf(_("no changes added to commit "
1323                                          "(use \"git add\" and/or \"git commit -a\")\n"));
1324                         else
1325                                 printf(_("no changes added to commit\n"));
1326                 } else if (s->untracked.nr) {
1327                         if (s->hints)
1328                                 printf(_("nothing added to commit but untracked files "
1329                                          "present (use \"git add\" to track)\n"));
1330                         else
1331                                 printf(_("nothing added to commit but untracked files present\n"));
1332                 } else if (s->is_initial) {
1333                         if (s->hints)
1334                                 printf(_("nothing to commit (create/copy files "
1335                                          "and use \"git add\" to track)\n"));
1336                         else
1337                                 printf(_("nothing to commit\n"));
1338                 } else if (!s->show_untracked_files) {
1339                         if (s->hints)
1340                                 printf(_("nothing to commit (use -u to show untracked files)\n"));
1341                         else
1342                                 printf(_("nothing to commit\n"));
1343                 } else
1344                         printf(_("nothing to commit, working directory clean\n"));
1345         }
1346 }
1347
1348 static void wt_shortstatus_unmerged(struct string_list_item *it,
1349                            struct wt_status *s)
1350 {
1351         struct wt_status_change_data *d = it->util;
1352         const char *how = "??";
1353
1354         switch (d->stagemask) {
1355         case 1: how = "DD"; break; /* both deleted */
1356         case 2: how = "AU"; break; /* added by us */
1357         case 3: how = "UD"; break; /* deleted by them */
1358         case 4: how = "UA"; break; /* added by them */
1359         case 5: how = "DU"; break; /* deleted by us */
1360         case 6: how = "AA"; break; /* both added */
1361         case 7: how = "UU"; break; /* both modified */
1362         }
1363         color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1364         if (s->null_termination) {
1365                 fprintf(stdout, " %s%c", it->string, 0);
1366         } else {
1367                 struct strbuf onebuf = STRBUF_INIT;
1368                 const char *one;
1369                 one = quote_path(it->string, s->prefix, &onebuf);
1370                 printf(" %s\n", one);
1371                 strbuf_release(&onebuf);
1372         }
1373 }
1374
1375 static void wt_shortstatus_status(struct string_list_item *it,
1376                          struct wt_status *s)
1377 {
1378         struct wt_status_change_data *d = it->util;
1379
1380         if (d->index_status)
1381                 color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1382         else
1383                 putchar(' ');
1384         if (d->worktree_status)
1385                 color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1386         else
1387                 putchar(' ');
1388         putchar(' ');
1389         if (s->null_termination) {
1390                 fprintf(stdout, "%s%c", it->string, 0);
1391                 if (d->head_path)
1392                         fprintf(stdout, "%s%c", d->head_path, 0);
1393         } else {
1394                 struct strbuf onebuf = STRBUF_INIT;
1395                 const char *one;
1396                 if (d->head_path) {
1397                         one = quote_path(d->head_path, s->prefix, &onebuf);
1398                         if (*one != '"' && strchr(one, ' ') != NULL) {
1399                                 putchar('"');
1400                                 strbuf_addch(&onebuf, '"');
1401                                 one = onebuf.buf;
1402                         }
1403                         printf("%s -> ", one);
1404                         strbuf_release(&onebuf);
1405                 }
1406                 one = quote_path(it->string, s->prefix, &onebuf);
1407                 if (*one != '"' && strchr(one, ' ') != NULL) {
1408                         putchar('"');
1409                         strbuf_addch(&onebuf, '"');
1410                         one = onebuf.buf;
1411                 }
1412                 printf("%s\n", one);
1413                 strbuf_release(&onebuf);
1414         }
1415 }
1416
1417 static void wt_shortstatus_other(struct string_list_item *it,
1418                                  struct wt_status *s, const char *sign)
1419 {
1420         if (s->null_termination) {
1421                 fprintf(stdout, "%s %s%c", sign, it->string, 0);
1422         } else {
1423                 struct strbuf onebuf = STRBUF_INIT;
1424                 const char *one;
1425                 one = quote_path(it->string, s->prefix, &onebuf);
1426                 color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1427                 printf(" %s\n", one);
1428                 strbuf_release(&onebuf);
1429         }
1430 }
1431
1432 static void wt_shortstatus_print_tracking(struct wt_status *s)
1433 {
1434         struct branch *branch;
1435         const char *header_color = color(WT_STATUS_HEADER, s);
1436         const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1437         const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1438
1439         const char *base;
1440         const char *branch_name;
1441         int num_ours, num_theirs;
1442         int upstream_is_gone = 0;
1443
1444         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1445
1446         if (!s->branch)
1447                 return;
1448         branch_name = s->branch;
1449
1450         if (!prefixcmp(branch_name, "refs/heads/"))
1451                 branch_name += 11;
1452         else if (!strcmp(branch_name, "HEAD")) {
1453                 branch_name = _("HEAD (no branch)");
1454                 branch_color_local = color(WT_STATUS_NOBRANCH, s);
1455         }
1456
1457         branch = branch_get(s->branch + 11);
1458         if (s->is_initial)
1459                 color_fprintf(s->fp, header_color, _("Initial commit on "));
1460
1461         color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1462
1463         switch (stat_tracking_info(branch, &num_ours, &num_theirs)) {
1464         case 0:
1465                 /* no base */
1466                 fputc(s->null_termination ? '\0' : '\n', s->fp);
1467                 return;
1468         case -1:
1469                 /* with "gone" base */
1470                 upstream_is_gone = 1;
1471                 break;
1472         default:
1473                 /* with base */
1474                 break;
1475         }
1476
1477         base = branch->merge[0]->dst;
1478         base = shorten_unambiguous_ref(base, 0);
1479         color_fprintf(s->fp, header_color, "...");
1480         color_fprintf(s->fp, branch_color_remote, "%s", base);
1481
1482         if (!upstream_is_gone && !num_ours && !num_theirs) {
1483                 fputc(s->null_termination ? '\0' : '\n', s->fp);
1484                 return;
1485         }
1486
1487         color_fprintf(s->fp, header_color, " [");
1488         if (upstream_is_gone) {
1489                 color_fprintf(s->fp, header_color, _("gone"));
1490         } else if (!num_ours) {
1491                 color_fprintf(s->fp, header_color, _("behind "));
1492                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1493         } else if (!num_theirs) {
1494                 color_fprintf(s->fp, header_color, _("ahead "));
1495                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1496         } else {
1497                 color_fprintf(s->fp, header_color, _("ahead "));
1498                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1499                 color_fprintf(s->fp, header_color, _(", behind "));
1500                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1501         }
1502
1503         color_fprintf(s->fp, header_color, "]");
1504         fputc(s->null_termination ? '\0' : '\n', s->fp);
1505 }
1506
1507 void wt_shortstatus_print(struct wt_status *s)
1508 {
1509         int i;
1510
1511         if (s->show_branch)
1512                 wt_shortstatus_print_tracking(s);
1513
1514         for (i = 0; i < s->change.nr; i++) {
1515                 struct wt_status_change_data *d;
1516                 struct string_list_item *it;
1517
1518                 it = &(s->change.items[i]);
1519                 d = it->util;
1520                 if (d->stagemask)
1521                         wt_shortstatus_unmerged(it, s);
1522                 else
1523                         wt_shortstatus_status(it, s);
1524         }
1525         for (i = 0; i < s->untracked.nr; i++) {
1526                 struct string_list_item *it;
1527
1528                 it = &(s->untracked.items[i]);
1529                 wt_shortstatus_other(it, s, "??");
1530         }
1531         for (i = 0; i < s->ignored.nr; i++) {
1532                 struct string_list_item *it;
1533
1534                 it = &(s->ignored.items[i]);
1535                 wt_shortstatus_other(it, s, "!!");
1536         }
1537 }
1538
1539 void wt_porcelain_print(struct wt_status *s)
1540 {
1541         s->use_color = 0;
1542         s->relative_paths = 0;
1543         s->prefix = NULL;
1544         wt_shortstatus_print(s);
1545 }