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 const char cut_line[] =
  21 "------------------------ >8 ------------------------\n";
  22
  23 static char default_wt_status_colors[][COLOR_MAXLEN] = {
  24         GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
  25         GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
  26         GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
  27         GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
  28         GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
  29         GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
  30         GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
  31         GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
  32         GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
  33 };
  34
  35 static const char *color(int slot, struct wt_status *s)
  36 {
  37         const char *c = "";
  38         if (want_color(s->use_color))
  39                 c = s->color_palette[slot];
  40         if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
  41                 c = s->color_palette[WT_STATUS_HEADER];
  42         return c;
  43 }
  44
  45 static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
  46                 const char *fmt, va_list ap, const char *trail)
  47 {
  48         struct strbuf sb = STRBUF_INIT;
  49         struct strbuf linebuf = STRBUF_INIT;
  50         const char *line, *eol;
  51
  52         strbuf_vaddf(&sb, fmt, ap);
  53         if (!sb.len) {
  54                 if (s->display_comment_prefix) {
  55                         strbuf_addch(&sb, comment_line_char);
  56                         if (!trail)
  57                                 strbuf_addch(&sb, ' ');
  58                 }
  59                 color_print_strbuf(s->fp, color, &sb);
  60                 if (trail)
  61                         fprintf(s->fp, "%s", trail);
  62                 strbuf_release(&sb);
  63                 return;
  64         }
  65         for (line = sb.buf; *line; line = eol + 1) {
  66                 eol = strchr(line, '\n');
  67
  68                 strbuf_reset(&linebuf);
  69                 if (at_bol && s->display_comment_prefix) {
  70                         strbuf_addch(&linebuf, comment_line_char);
  71                         if (*line != '\n' && *line != '\t')
  72                                 strbuf_addch(&linebuf, ' ');
  73                 }
  74                 if (eol)
  75                         strbuf_add(&linebuf, line, eol - line);
  76                 else
  77                         strbuf_addstr(&linebuf, line);
  78                 color_print_strbuf(s->fp, color, &linebuf);
  79                 if (eol)
  80                         fprintf(s->fp, "\n");
  81                 else
  82                         break;
  83                 at_bol = 1;
  84         }
  85         if (trail)
  86                 fprintf(s->fp, "%s", trail);
  87         strbuf_release(&linebuf);
  88         strbuf_release(&sb);
  89 }
  90
  91 void status_printf_ln(struct wt_status *s, const char *color,
  92                         const char *fmt, ...)
  93 {
  94         va_list ap;
  95
  96         va_start(ap, fmt);
  97         status_vprintf(s, 1, color, fmt, ap, "\n");
  98         va_end(ap);
  99 }
 100
 101 void status_printf(struct wt_status *s, const char *color,
 102                         const char *fmt, ...)
 103 {
 104         va_list ap;
 105
 106         va_start(ap, fmt);
 107         status_vprintf(s, 1, color, fmt, ap, NULL);
 108         va_end(ap);
 109 }
 110
 111 static void status_printf_more(struct wt_status *s, const char *color,
 112                                const char *fmt, ...)
 113 {
 114         va_list ap;
 115
 116         va_start(ap, fmt);
 117         status_vprintf(s, 0, color, fmt, ap, NULL);
 118         va_end(ap);
 119 }
 120
 121 void wt_status_prepare(struct wt_status *s)
 122 {
 123         unsigned char sha1[20];
 124
 125         memset(s, 0, sizeof(*s));
 126         memcpy(s->color_palette, default_wt_status_colors,
 127                sizeof(default_wt_status_colors));
 128         s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 129         s->use_color = -1;
 130         s->relative_paths = 1;
 131         s->branch = resolve_refdup("HEAD", sha1, 0, NULL);
 132         s->reference = "HEAD";
 133         s->fp = stdout;
 134         s->index_file = get_index_file();
 135         s->change.strdup_strings = 1;
 136         s->untracked.strdup_strings = 1;
 137         s->ignored.strdup_strings = 1;
 138         s->show_branch = -1;  /* unspecified */
 139         s->display_comment_prefix = 0;
 140 }
 141
 142 static void wt_status_print_unmerged_header(struct wt_status *s)
 143 {
 144         int i;
 145         int del_mod_conflict = 0;
 146         int both_deleted = 0;
 147         int not_deleted = 0;
 148         const char *c = color(WT_STATUS_HEADER, s);
 149
 150         status_printf_ln(s, c, _("Unmerged paths:"));
 151
 152         for (i = 0; i < s->change.nr; i++) {
 153                 struct string_list_item *it = &(s->change.items[i]);
 154                 struct wt_status_change_data *d = it->util;
 155
 156                 switch (d->stagemask) {
 157                 case 0:
 158                         break;
 159                 case 1:
 160                         both_deleted = 1;
 161                         break;
 162                 case 3:
 163                 case 5:
 164                         del_mod_conflict = 1;
 165                         break;
 166                 default:
 167                         not_deleted = 1;
 168                         break;
 169                 }
 170         }
 171
 172         if (!s->hints)
 173                 return;
 174         if (s->whence != FROM_COMMIT)
 175                 ;
 176         else if (!s->is_initial)
 177                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 178         else
 179                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 180
 181         if (!both_deleted) {
 182                 if (!del_mod_conflict)
 183                         status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
 184                 else
 185                         status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 186         } else if (!del_mod_conflict && !not_deleted) {
 187                 status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
 188         } else {
 189                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 190         }
 191         status_printf_ln(s, c, "%s", "");
 192 }
 193
 194 static void wt_status_print_cached_header(struct wt_status *s)
 195 {
 196         const char *c = color(WT_STATUS_HEADER, s);
 197
 198         status_printf_ln(s, c, _("Changes to be committed:"));
 199         if (!s->hints)
 200                 return;
 201         if (s->whence != FROM_COMMIT)
 202                 ; /* NEEDSWORK: use "git reset --unresolve"??? */
 203         else if (!s->is_initial)
 204                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 205         else
 206                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 207         status_printf_ln(s, c, "%s", "");
 208 }
 209
 210 static void wt_status_print_dirty_header(struct wt_status *s,
 211                                          int has_deleted,
 212                                          int has_dirty_submodules)
 213 {
 214         const char *c = color(WT_STATUS_HEADER, s);
 215
 216         status_printf_ln(s, c, _("Changes not staged for commit:"));
 217         if (!s->hints)
 218                 return;
 219         if (!has_deleted)
 220                 status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
 221         else
 222                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
 223         status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
 224         if (has_dirty_submodules)
 225                 status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
 226         status_printf_ln(s, c, "%s", "");
 227 }
 228
 229 static void wt_status_print_other_header(struct wt_status *s,
 230                                          const char *what,
 231                                          const char *how)
 232 {
 233         const char *c = color(WT_STATUS_HEADER, s);
 234         status_printf_ln(s, c, "%s:", what);
 235         if (!s->hints)
 236                 return;
 237         status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
 238         status_printf_ln(s, c, "%s", "");
 239 }
 240
 241 static void wt_status_print_trailer(struct wt_status *s)
 242 {
 243         status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 244 }
 245
 246 #define quote_path quote_path_relative
 247
 248 static const char *wt_status_unmerged_status_string(int stagemask)
 249 {
 250         switch (stagemask) {
 251         case 1:
 252                 return _("both deleted:");
 253         case 2:
 254                 return _("added by us:");
 255         case 3:
 256                 return _("deleted by them:");
 257         case 4:
 258                 return _("added by them:");
 259         case 5:
 260                 return _("deleted by us:");
 261         case 6:
 262                 return _("both added:");
 263         case 7:
 264                 return _("both modified:");
 265         default:
 266                 die(_("bug: unhandled unmerged status %x"), stagemask);
 267         }
 268 }
 269
 270 static const char *wt_status_diff_status_string(int status)
 271 {
 272         switch (status) {
 273         case DIFF_STATUS_ADDED:
 274                 return _("new file:");
 275         case DIFF_STATUS_COPIED:
 276                 return _("copied:");
 277         case DIFF_STATUS_DELETED:
 278                 return _("deleted:");
 279         case DIFF_STATUS_MODIFIED:
 280                 return _("modified:");
 281         case DIFF_STATUS_RENAMED:
 282                 return _("renamed:");
 283         case DIFF_STATUS_TYPE_CHANGED:
 284                 return _("typechange:");
 285         case DIFF_STATUS_UNKNOWN:
 286                 return _("unknown:");
 287         case DIFF_STATUS_UNMERGED:
 288                 return _("unmerged:");
 289         default:
 290                 return NULL;
 291         }
 292 }
 293
 294 static int maxwidth(const char *(*label)(int), int minval, int maxval)
 295 {
 296         int result = 0, i;
 297
 298         for (i = minval; i <= maxval; i++) {
 299                 const char *s = label(i);
 300                 int len = s ? utf8_strwidth(s) : 0;
 301                 if (len > result)
 302                         result = len;
 303         }
 304         return result;
 305 }
 306
 307 static void wt_status_print_unmerged_data(struct wt_status *s,
 308                                           struct string_list_item *it)
 309 {
 310         const char *c = color(WT_STATUS_UNMERGED, s);
 311         struct wt_status_change_data *d = it->util;
 312         struct strbuf onebuf = STRBUF_INIT;
 313         static char *padding;
 314         static int label_width;
 315         const char *one, *how;
 316         int len;
 317
 318         if (!padding) {
 319                 label_width = maxwidth(wt_status_unmerged_status_string, 1, 7);
 320                 label_width += strlen(" ");
 321                 padding = xmallocz(label_width);
 322                 memset(padding, ' ', label_width);
 323         }
 324
 325         one = quote_path(it->string, s->prefix, &onebuf);
 326         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 327
 328         how = wt_status_unmerged_status_string(d->stagemask);
 329         len = label_width - utf8_strwidth(how);
 330         status_printf_more(s, c, "%s%.*s%s\n", how, len, padding, one);
 331         strbuf_release(&onebuf);
 332 }
 333
 334 static void wt_status_print_change_data(struct wt_status *s,
 335                                         int change_type,
 336                                         struct string_list_item *it)
 337 {
 338         struct wt_status_change_data *d = it->util;
 339         const char *c = color(change_type, s);
 340         int status;
 341         char *one_name;
 342         char *two_name;
 343         const char *one, *two;
 344         struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
 345         struct strbuf extra = STRBUF_INIT;
 346         static char *padding;
 347         static int label_width;
 348         const char *what;
 349         int len;
 350
 351         if (!padding) {
 352                 /* If DIFF_STATUS_* uses outside the range [A..Z], we're in trouble */
 353                 label_width = maxwidth(wt_status_diff_status_string, 'A', 'Z');
 354                 label_width += strlen(" ");
 355                 padding = xmallocz(label_width);
 356                 memset(padding, ' ', label_width);
 357         }
 358
 359         one_name = two_name = it->string;
 360         switch (change_type) {
 361         case WT_STATUS_UPDATED:
 362                 status = d->index_status;
 363                 if (d->head_path)
 364                         one_name = d->head_path;
 365                 break;
 366         case WT_STATUS_CHANGED:
 367                 if (d->new_submodule_commits || d->dirty_submodule) {
 368                         strbuf_addstr(&extra, " (");
 369                         if (d->new_submodule_commits)
 370                                 strbuf_addf(&extra, _("new commits, "));
 371                         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 372                                 strbuf_addf(&extra, _("modified content, "));
 373                         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 374                                 strbuf_addf(&extra, _("untracked content, "));
 375                         strbuf_setlen(&extra, extra.len - 2);
 376                         strbuf_addch(&extra, ')');
 377                 }
 378                 status = d->worktree_status;
 379                 break;
 380         default:
 381                 die("BUG: unhandled change_type %d in wt_status_print_change_data",
 382                     change_type);
 383         }
 384
 385         one = quote_path(one_name, s->prefix, &onebuf);
 386         two = quote_path(two_name, s->prefix, &twobuf);
 387
 388         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 389         what = wt_status_diff_status_string(status);
 390         if (!what)
 391                 die(_("bug: unhandled diff status %c"), status);
 392         len = label_width - utf8_strwidth(what);
 393         assert(len >= 0);
 394         if (status == DIFF_STATUS_COPIED || status == DIFF_STATUS_RENAMED)
 395                 status_printf_more(s, c, "%s%.*s%s -> %s",
 396                                    what, len, padding, one, two);
 397         else
 398                 status_printf_more(s, c, "%s%.*s%s",
 399                                    what, len, padding, one);
 400         if (extra.len) {
 401                 status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 402                 strbuf_release(&extra);
 403         }
 404         status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 405         strbuf_release(&onebuf);
 406         strbuf_release(&twobuf);
 407 }
 408
 409 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 410                                          struct diff_options *options,
 411                                          void *data)
 412 {
 413         struct wt_status *s = data;
 414         int i;
 415
 416         if (!q->nr)
 417                 return;
 418         s->workdir_dirty = 1;
 419         for (i = 0; i < q->nr; i++) {
 420                 struct diff_filepair *p;
 421                 struct string_list_item *it;
 422                 struct wt_status_change_data *d;
 423
 424                 p = q->queue[i];
 425                 it = string_list_insert(&s->change, p->one->path);
 426                 d = it->util;
 427                 if (!d) {
 428                         d = xcalloc(1, sizeof(*d));
 429                         it->util = d;
 430                 }
 431                 if (!d->worktree_status)
 432                         d->worktree_status = p->status;
 433                 d->dirty_submodule = p->two->dirty_submodule;
 434                 if (S_ISGITLINK(p->two->mode))
 435                         d->new_submodule_commits = !!hashcmp(p->one->sha1, p->two->sha1);
 436         }
 437 }
 438
 439 static int unmerged_mask(const char *path)
 440 {
 441         int pos, mask;
 442         const struct cache_entry *ce;
 443
 444         pos = cache_name_pos(path, strlen(path));
 445         if (0 <= pos)
 446                 return 0;
 447
 448         mask = 0;
 449         pos = -pos-1;
 450         while (pos < active_nr) {
 451                 ce = active_cache[pos++];
 452                 if (strcmp(ce->name, path) || !ce_stage(ce))
 453                         break;
 454                 mask |= (1 << (ce_stage(ce) - 1));
 455         }
 456         return mask;
 457 }
 458
 459 static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 460                                          struct diff_options *options,
 461                                          void *data)
 462 {
 463         struct wt_status *s = data;
 464         int i;
 465
 466         for (i = 0; i < q->nr; i++) {
 467                 struct diff_filepair *p;
 468                 struct string_list_item *it;
 469                 struct wt_status_change_data *d;
 470
 471                 p = q->queue[i];
 472                 it = string_list_insert(&s->change, p->two->path);
 473                 d = it->util;
 474                 if (!d) {
 475                         d = xcalloc(1, sizeof(*d));
 476                         it->util = d;
 477                 }
 478                 if (!d->index_status)
 479                         d->index_status = p->status;
 480                 switch (p->status) {
 481                 case DIFF_STATUS_COPIED:
 482                 case DIFF_STATUS_RENAMED:
 483                         d->head_path = xstrdup(p->one->path);
 484                         break;
 485                 case DIFF_STATUS_UNMERGED:
 486                         d->stagemask = unmerged_mask(p->two->path);
 487                         break;
 488                 }
 489         }
 490 }
 491
 492 static void wt_status_collect_changes_worktree(struct wt_status *s)
 493 {
 494         struct rev_info rev;
 495
 496         init_revisions(&rev, NULL);
 497         setup_revisions(0, NULL, &rev, NULL);
 498         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 499         DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
 500         if (!s->show_untracked_files)
 501                 DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
 502         if (s->ignore_submodule_arg) {
 503                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 504                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 505         }
 506         rev.diffopt.format_callback = wt_status_collect_changed_cb;
 507         rev.diffopt.format_callback_data = s;
 508         copy_pathspec(&rev.prune_data, &s->pathspec);
 509         run_diff_files(&rev, 0);
 510 }
 511
 512 static void wt_status_collect_changes_index(struct wt_status *s)
 513 {
 514         struct rev_info rev;
 515         struct setup_revision_opt opt;
 516
 517         init_revisions(&rev, NULL);
 518         memset(&opt, 0, sizeof(opt));
 519         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 520         setup_revisions(0, NULL, &rev, &opt);
 521
 522         DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 523         if (s->ignore_submodule_arg) {
 524                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 525         } else {
 526                 /*
 527                  * Unless the user did explicitly request a submodule ignore
 528                  * mode by passing a command line option we do not ignore any
 529                  * changed submodule SHA-1s when comparing index and HEAD, no
 530                  * matter what is configured. Otherwise the user won't be
 531                  * shown any submodules she manually added (and which are
 532                  * staged to be committed), which would be really confusing.
 533                  */
 534                 handle_ignore_submodules_arg(&rev.diffopt, "dirty");
 535         }
 536
 537         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 538         rev.diffopt.format_callback = wt_status_collect_updated_cb;
 539         rev.diffopt.format_callback_data = s;
 540         rev.diffopt.detect_rename = 1;
 541         rev.diffopt.rename_limit = 200;
 542         rev.diffopt.break_opt = 0;
 543         copy_pathspec(&rev.prune_data, &s->pathspec);
 544         run_diff_index(&rev, 1);
 545 }
 546
 547 static void wt_status_collect_changes_initial(struct wt_status *s)
 548 {
 549         int i;
 550
 551         for (i = 0; i < active_nr; i++) {
 552                 struct string_list_item *it;
 553                 struct wt_status_change_data *d;
 554                 const struct cache_entry *ce = active_cache[i];
 555
 556                 if (!ce_path_match(ce, &s->pathspec, NULL))
 557                         continue;
 558                 it = string_list_insert(&s->change, ce->name);
 559                 d = it->util;
 560                 if (!d) {
 561                         d = xcalloc(1, sizeof(*d));
 562                         it->util = d;
 563                 }
 564                 if (ce_stage(ce)) {
 565                         d->index_status = DIFF_STATUS_UNMERGED;
 566                         d->stagemask |= (1 << (ce_stage(ce) - 1));
 567                 }
 568                 else
 569                         d->index_status = DIFF_STATUS_ADDED;
 570         }
 571 }
 572
 573 static void wt_status_collect_untracked(struct wt_status *s)
 574 {
 575         int i;
 576         struct dir_struct dir;
 577         uint64_t t_begin = getnanotime();
 578
 579         if (!s->show_untracked_files)
 580                 return;
 581
 582         memset(&dir, 0, sizeof(dir));
 583         if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 584                 dir.flags |=
 585                         DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 586         if (s->show_ignored_files)
 587                 dir.flags |= DIR_SHOW_IGNORED_TOO;
 588         setup_standard_excludes(&dir);
 589
 590         fill_directory(&dir, &s->pathspec);
 591
 592         for (i = 0; i < dir.nr; i++) {
 593                 struct dir_entry *ent = dir.entries[i];
 594                 if (cache_name_is_other(ent->name, ent->len) &&
 595                     dir_path_match(ent, &s->pathspec, 0, NULL))
 596                         string_list_insert(&s->untracked, ent->name);
 597                 free(ent);
 598         }
 599
 600         for (i = 0; i < dir.ignored_nr; i++) {
 601                 struct dir_entry *ent = dir.ignored[i];
 602                 if (cache_name_is_other(ent->name, ent->len) &&
 603                     dir_path_match(ent, &s->pathspec, 0, NULL))
 604                         string_list_insert(&s->ignored, ent->name);
 605                 free(ent);
 606         }
 607
 608         free(dir.entries);
 609         free(dir.ignored);
 610         clear_directory(&dir);
 611
 612         if (advice_status_u_option)
 613                 s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 614 }
 615
 616 void wt_status_collect(struct wt_status *s)
 617 {
 618         wt_status_collect_changes_worktree(s);
 619
 620         if (s->is_initial)
 621                 wt_status_collect_changes_initial(s);
 622         else
 623                 wt_status_collect_changes_index(s);
 624         wt_status_collect_untracked(s);
 625 }
 626
 627 static void wt_status_print_unmerged(struct wt_status *s)
 628 {
 629         int shown_header = 0;
 630         int i;
 631
 632         for (i = 0; i < s->change.nr; i++) {
 633                 struct wt_status_change_data *d;
 634                 struct string_list_item *it;
 635                 it = &(s->change.items[i]);
 636                 d = it->util;
 637                 if (!d->stagemask)
 638                         continue;
 639                 if (!shown_header) {
 640                         wt_status_print_unmerged_header(s);
 641                         shown_header = 1;
 642                 }
 643                 wt_status_print_unmerged_data(s, it);
 644         }
 645         if (shown_header)
 646                 wt_status_print_trailer(s);
 647
 648 }
 649
 650 static void wt_status_print_updated(struct wt_status *s)
 651 {
 652         int shown_header = 0;
 653         int i;
 654
 655         for (i = 0; i < s->change.nr; i++) {
 656                 struct wt_status_change_data *d;
 657                 struct string_list_item *it;
 658                 it = &(s->change.items[i]);
 659                 d = it->util;
 660                 if (!d->index_status ||
 661                     d->index_status == DIFF_STATUS_UNMERGED)
 662                         continue;
 663                 if (!shown_header) {
 664                         wt_status_print_cached_header(s);
 665                         s->commitable = 1;
 666                         shown_header = 1;
 667                 }
 668                 wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
 669         }
 670         if (shown_header)
 671                 wt_status_print_trailer(s);
 672 }
 673
 674 /*
 675  * -1 : has delete
 676  *  0 : no change
 677  *  1 : some change but no delete
 678  */
 679 static int wt_status_check_worktree_changes(struct wt_status *s,
 680                                              int *dirty_submodules)
 681 {
 682         int i;
 683         int changes = 0;
 684
 685         *dirty_submodules = 0;
 686
 687         for (i = 0; i < s->change.nr; i++) {
 688                 struct wt_status_change_data *d;
 689                 d = s->change.items[i].util;
 690                 if (!d->worktree_status ||
 691                     d->worktree_status == DIFF_STATUS_UNMERGED)
 692                         continue;
 693                 if (!changes)
 694                         changes = 1;
 695                 if (d->dirty_submodule)
 696                         *dirty_submodules = 1;
 697                 if (d->worktree_status == DIFF_STATUS_DELETED)
 698                         changes = -1;
 699         }
 700         return changes;
 701 }
 702
 703 static void wt_status_print_changed(struct wt_status *s)
 704 {
 705         int i, dirty_submodules;
 706         int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 707
 708         if (!worktree_changes)
 709                 return;
 710
 711         wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 712
 713         for (i = 0; i < s->change.nr; i++) {
 714                 struct wt_status_change_data *d;
 715                 struct string_list_item *it;
 716                 it = &(s->change.items[i]);
 717                 d = it->util;
 718                 if (!d->worktree_status ||
 719                     d->worktree_status == DIFF_STATUS_UNMERGED)
 720                         continue;
 721                 wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
 722         }
 723         wt_status_print_trailer(s);
 724 }
 725
 726 static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
 727 {
 728         struct child_process sm_summary = CHILD_PROCESS_INIT;
 729         struct argv_array env = ARGV_ARRAY_INIT;
 730         struct argv_array argv = ARGV_ARRAY_INIT;
 731         struct strbuf cmd_stdout = STRBUF_INIT;
 732         struct strbuf summary = STRBUF_INIT;
 733         char *summary_content;
 734         size_t len;
 735
 736         argv_array_pushf(&env, "GIT_INDEX_FILE=%s", s->index_file);
 737
 738         argv_array_push(&argv, "submodule");
 739         argv_array_push(&argv, "summary");
 740         argv_array_push(&argv, uncommitted ? "--files" : "--cached");
 741         argv_array_push(&argv, "--for-status");
 742         argv_array_push(&argv, "--summary-limit");
 743         argv_array_pushf(&argv, "%d", s->submodule_summary);
 744         if (!uncommitted)
 745                 argv_array_push(&argv, s->amend ? "HEAD^" : "HEAD");
 746
 747         sm_summary.argv = argv.argv;
 748         sm_summary.env = env.argv;
 749         sm_summary.git_cmd = 1;
 750         sm_summary.no_stdin = 1;
 751         fflush(s->fp);
 752         sm_summary.out = -1;
 753
 754         run_command(&sm_summary);
 755         argv_array_clear(&env);
 756         argv_array_clear(&argv);
 757
 758         len = strbuf_read(&cmd_stdout, sm_summary.out, 1024);
 759
 760         /* prepend header, only if there's an actual output */
 761         if (len) {
 762                 if (uncommitted)
 763                         strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 764                 else
 765                         strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 766                 strbuf_addstr(&summary, "\n\n");
 767         }
 768         strbuf_addbuf(&summary, &cmd_stdout);
 769         strbuf_release(&cmd_stdout);
 770
 771         if (s->display_comment_prefix) {
 772                 summary_content = strbuf_detach(&summary, &len);
 773                 strbuf_add_commented_lines(&summary, summary_content, len);
 774                 free(summary_content);
 775         }
 776
 777         fputs(summary.buf, s->fp);
 778         strbuf_release(&summary);
 779 }
 780
 781 static void wt_status_print_other(struct wt_status *s,
 782                                   struct string_list *l,
 783                                   const char *what,
 784                                   const char *how)
 785 {
 786         int i;
 787         struct strbuf buf = STRBUF_INIT;
 788         static struct string_list output = STRING_LIST_INIT_DUP;
 789         struct column_options copts;
 790
 791         if (!l->nr)
 792                 return;
 793
 794         wt_status_print_other_header(s, what, how);
 795
 796         for (i = 0; i < l->nr; i++) {
 797                 struct string_list_item *it;
 798                 const char *path;
 799                 it = &(l->items[i]);
 800                 path = quote_path(it->string, s->prefix, &buf);
 801                 if (column_active(s->colopts)) {
 802                         string_list_append(&output, path);
 803                         continue;
 804                 }
 805                 status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 806                 status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 807                                    "%s\n", path);
 808         }
 809
 810         strbuf_release(&buf);
 811         if (!column_active(s->colopts))
 812                 goto conclude;
 813
 814         strbuf_addf(&buf, "%s%s\t%s",
 815                     color(WT_STATUS_HEADER, s),
 816                     s->display_comment_prefix ? "#" : "",
 817                     color(WT_STATUS_UNTRACKED, s));
 818         memset(&copts, 0, sizeof(copts));
 819         copts.padding = 1;
 820         copts.indent = buf.buf;
 821         if (want_color(s->use_color))
 822                 copts.nl = GIT_COLOR_RESET "\n";
 823         print_columns(&output, s->colopts, &copts);
 824         string_list_clear(&output, 0);
 825         strbuf_release(&buf);
 826 conclude:
 827         status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 828 }
 829
 830 void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
 831 {
 832         const char *p;
 833         struct strbuf pattern = STRBUF_INIT;
 834
 835         strbuf_addf(&pattern, "%c %s", comment_line_char, cut_line);
 836         p = strstr(buf->buf, pattern.buf);
 837         if (p && (p == buf->buf || p[-1] == '\n'))
 838                 strbuf_setlen(buf, p - buf->buf);
 839         strbuf_release(&pattern);
 840 }
 841
 842 void wt_status_add_cut_line(FILE *fp)
 843 {
 844         const char *explanation = _("Do not touch the line above.\nEverything below will be removed.");
 845         struct strbuf buf = STRBUF_INIT;
 846
 847         fprintf(fp, "%c %s", comment_line_char, cut_line);
 848         strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
 849         fputs(buf.buf, fp);
 850         strbuf_release(&buf);
 851 }
 852
 853 static void wt_status_print_verbose(struct wt_status *s)
 854 {
 855         struct rev_info rev;
 856         struct setup_revision_opt opt;
 857
 858         init_revisions(&rev, NULL);
 859         DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
 860
 861         memset(&opt, 0, sizeof(opt));
 862         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 863         setup_revisions(0, NULL, &rev, &opt);
 864
 865         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 866         rev.diffopt.detect_rename = 1;
 867         rev.diffopt.file = s->fp;
 868         rev.diffopt.close_file = 0;
 869         /*
 870          * If we're not going to stdout, then we definitely don't
 871          * want color, since we are going to the commit message
 872          * file (and even the "auto" setting won't work, since it
 873          * will have checked isatty on stdout). But we then do want
 874          * to insert the scissor line here to reliably remove the
 875          * diff before committing.
 876          */
 877         if (s->fp != stdout) {
 878                 rev.diffopt.use_color = 0;
 879                 wt_status_add_cut_line(s->fp);
 880         }
 881         run_diff_index(&rev, 1);
 882 }
 883
 884 static void wt_status_print_tracking(struct wt_status *s)
 885 {
 886         struct strbuf sb = STRBUF_INIT;
 887         const char *cp, *ep;
 888         struct branch *branch;
 889         char comment_line_string[3];
 890         int i;
 891
 892         assert(s->branch && !s->is_initial);
 893         if (!starts_with(s->branch, "refs/heads/"))
 894                 return;
 895         branch = branch_get(s->branch + 11);
 896         if (!format_tracking_info(branch, &sb))
 897                 return;
 898
 899         i = 0;
 900         if (s->display_comment_prefix) {
 901                 comment_line_string[i++] = comment_line_char;
 902                 comment_line_string[i++] = ' ';
 903         }
 904         comment_line_string[i] = '\0';
 905
 906         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
 907                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
 908                                  "%s%.*s", comment_line_string,
 909                                  (int)(ep - cp), cp);
 910         if (s->display_comment_prefix)
 911                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
 912                                  comment_line_char);
 913         else
 914                 fputs("", s->fp);
 915 }
 916
 917 static int has_unmerged(struct wt_status *s)
 918 {
 919         int i;
 920
 921         for (i = 0; i < s->change.nr; i++) {
 922                 struct wt_status_change_data *d;
 923                 d = s->change.items[i].util;
 924                 if (d->stagemask)
 925                         return 1;
 926         }
 927         return 0;
 928 }
 929
 930 static void show_merge_in_progress(struct wt_status *s,
 931                                 struct wt_status_state *state,
 932                                 const char *color)
 933 {
 934         if (has_unmerged(s)) {
 935                 status_printf_ln(s, color, _("You have unmerged paths."));
 936                 if (s->hints)
 937                         status_printf_ln(s, color,
 938                                 _("  (fix conflicts and run \"git commit\")"));
 939         } else {
 940                 status_printf_ln(s, color,
 941                         _("All conflicts fixed but you are still merging."));
 942                 if (s->hints)
 943                         status_printf_ln(s, color,
 944                                 _("  (use \"git commit\" to conclude merge)"));
 945         }
 946         wt_status_print_trailer(s);
 947 }
 948
 949 static void show_am_in_progress(struct wt_status *s,
 950                                 struct wt_status_state *state,
 951                                 const char *color)
 952 {
 953         status_printf_ln(s, color,
 954                 _("You are in the middle of an am session."));
 955         if (state->am_empty_patch)
 956                 status_printf_ln(s, color,
 957                         _("The current patch is empty."));
 958         if (s->hints) {
 959                 if (!state->am_empty_patch)
 960                         status_printf_ln(s, color,
 961                                 _("  (fix conflicts and then run \"git am --continue\")"));
 962                 status_printf_ln(s, color,
 963                         _("  (use \"git am --skip\" to skip this patch)"));
 964                 status_printf_ln(s, color,
 965                         _("  (use \"git am --abort\" to restore the original branch)"));
 966         }
 967         wt_status_print_trailer(s);
 968 }
 969
 970 static char *read_line_from_git_path(const char *filename)
 971 {
 972         struct strbuf buf = STRBUF_INIT;
 973         FILE *fp = fopen(git_path("%s", filename), "r");
 974         if (!fp) {
 975                 strbuf_release(&buf);
 976                 return NULL;
 977         }
 978         strbuf_getline(&buf, fp, '\n');
 979         if (!fclose(fp)) {
 980                 return strbuf_detach(&buf, NULL);
 981         } else {
 982                 strbuf_release(&buf);
 983                 return NULL;
 984         }
 985 }
 986
 987 static int split_commit_in_progress(struct wt_status *s)
 988 {
 989         int split_in_progress = 0;
 990         char *head = read_line_from_git_path("HEAD");
 991         char *orig_head = read_line_from_git_path("ORIG_HEAD");
 992         char *rebase_amend = read_line_from_git_path("rebase-merge/amend");
 993         char *rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
 994
 995         if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
 996             !s->branch || strcmp(s->branch, "HEAD"))
 997                 return split_in_progress;
 998
 999         if (!strcmp(rebase_amend, rebase_orig_head)) {
1000                 if (strcmp(head, rebase_amend))
1001                         split_in_progress = 1;
1002         } else if (strcmp(orig_head, rebase_orig_head)) {
1003                 split_in_progress = 1;
1004         }
1005
1006         if (!s->amend && !s->nowarn && !s->workdir_dirty)
1007                 split_in_progress = 0;
1008
1009         free(head);
1010         free(orig_head);
1011         free(rebase_amend);
1012         free(rebase_orig_head);
1013         return split_in_progress;
1014 }
1015
1016 static void show_rebase_in_progress(struct wt_status *s,
1017                                 struct wt_status_state *state,
1018                                 const char *color)
1019 {
1020         struct stat st;
1021
1022         if (has_unmerged(s)) {
1023                 if (state->branch)
1024                         status_printf_ln(s, color,
1025                                          _("You are currently rebasing branch '%s' on '%s'."),
1026                                          state->branch,
1027                                          state->onto);
1028                 else
1029                         status_printf_ln(s, color,
1030                                          _("You are currently rebasing."));
1031                 if (s->hints) {
1032                         status_printf_ln(s, color,
1033                                 _("  (fix conflicts and then run \"git rebase --continue\")"));
1034                         status_printf_ln(s, color,
1035                                 _("  (use \"git rebase --skip\" to skip this patch)"));
1036                         status_printf_ln(s, color,
1037                                 _("  (use \"git rebase --abort\" to check out the original branch)"));
1038                 }
1039         } else if (state->rebase_in_progress || !stat(git_path("MERGE_MSG"), &st)) {
1040                 if (state->branch)
1041                         status_printf_ln(s, color,
1042                                          _("You are currently rebasing branch '%s' on '%s'."),
1043                                          state->branch,
1044                                          state->onto);
1045                 else
1046                         status_printf_ln(s, color,
1047                                          _("You are currently rebasing."));
1048                 if (s->hints)
1049                         status_printf_ln(s, color,
1050                                 _("  (all conflicts fixed: run \"git rebase --continue\")"));
1051         } else if (split_commit_in_progress(s)) {
1052                 if (state->branch)
1053                         status_printf_ln(s, color,
1054                                          _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1055                                          state->branch,
1056                                          state->onto);
1057                 else
1058                         status_printf_ln(s, color,
1059                                          _("You are currently splitting a commit during a rebase."));
1060                 if (s->hints)
1061                         status_printf_ln(s, color,
1062                                 _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1063         } else {
1064                 if (state->branch)
1065                         status_printf_ln(s, color,
1066                                          _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1067                                          state->branch,
1068                                          state->onto);
1069                 else
1070                         status_printf_ln(s, color,
1071                                          _("You are currently editing a commit during a rebase."));
1072                 if (s->hints && !s->amend) {
1073                         status_printf_ln(s, color,
1074                                 _("  (use \"git commit --amend\" to amend the current commit)"));
1075                         status_printf_ln(s, color,
1076                                 _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1077                 }
1078         }
1079         wt_status_print_trailer(s);
1080 }
1081
1082 static void show_cherry_pick_in_progress(struct wt_status *s,
1083                                         struct wt_status_state *state,
1084                                         const char *color)
1085 {
1086         status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1087                         find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1088         if (s->hints) {
1089                 if (has_unmerged(s))
1090                         status_printf_ln(s, color,
1091                                 _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1092                 else
1093                         status_printf_ln(s, color,
1094                                 _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1095                 status_printf_ln(s, color,
1096                         _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1097         }
1098         wt_status_print_trailer(s);
1099 }
1100
1101 static void show_revert_in_progress(struct wt_status *s,
1102                                         struct wt_status_state *state,
1103                                         const char *color)
1104 {
1105         status_printf_ln(s, color, _("You are currently reverting commit %s."),
1106                          find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1107         if (s->hints) {
1108                 if (has_unmerged(s))
1109                         status_printf_ln(s, color,
1110                                 _("  (fix conflicts and run \"git revert --continue\")"));
1111                 else
1112                         status_printf_ln(s, color,
1113                                 _("  (all conflicts fixed: run \"git revert --continue\")"));
1114                 status_printf_ln(s, color,
1115                         _("  (use \"git revert --abort\" to cancel the revert operation)"));
1116         }
1117         wt_status_print_trailer(s);
1118 }
1119
1120 static void show_bisect_in_progress(struct wt_status *s,
1121                                 struct wt_status_state *state,
1122                                 const char *color)
1123 {
1124         if (state->branch)
1125                 status_printf_ln(s, color,
1126                                  _("You are currently bisecting, started from branch '%s'."),
1127                                  state->branch);
1128         else
1129                 status_printf_ln(s, color,
1130                                  _("You are currently bisecting."));
1131         if (s->hints)
1132                 status_printf_ln(s, color,
1133                         _("  (use \"git bisect reset\" to get back to the original branch)"));
1134         wt_status_print_trailer(s);
1135 }
1136
1137 /*
1138  * Extract branch information from rebase/bisect
1139  */
1140 static char *read_and_strip_branch(const char *path)
1141 {
1142         struct strbuf sb = STRBUF_INIT;
1143         unsigned char sha1[20];
1144
1145         if (strbuf_read_file(&sb, git_path("%s", path), 0) <= 0)
1146                 goto got_nothing;
1147
1148         while (&sb.len && sb.buf[sb.len - 1] == '\n')
1149                 strbuf_setlen(&sb, sb.len - 1);
1150         if (!sb.len)
1151                 goto got_nothing;
1152         if (starts_with(sb.buf, "refs/heads/"))
1153                 strbuf_remove(&sb,0, strlen("refs/heads/"));
1154         else if (starts_with(sb.buf, "refs/"))
1155                 ;
1156         else if (!get_sha1_hex(sb.buf, sha1)) {
1157                 const char *abbrev;
1158                 abbrev = find_unique_abbrev(sha1, DEFAULT_ABBREV);
1159                 strbuf_reset(&sb);
1160                 strbuf_addstr(&sb, abbrev);
1161         } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1162                 goto got_nothing;
1163         else                    /* bisect */
1164                 ;
1165         return strbuf_detach(&sb, NULL);
1166
1167 got_nothing:
1168         strbuf_release(&sb);
1169         return NULL;
1170 }
1171
1172 struct grab_1st_switch_cbdata {
1173         struct strbuf buf;
1174         unsigned char nsha1[20];
1175 };
1176
1177 static int grab_1st_switch(unsigned char *osha1, unsigned char *nsha1,
1178                            const char *email, unsigned long timestamp, int tz,
1179                            const char *message, void *cb_data)
1180 {
1181         struct grab_1st_switch_cbdata *cb = cb_data;
1182         const char *target = NULL, *end;
1183
1184         if (!starts_with(message, "checkout: moving from "))
1185                 return 0;
1186         message += strlen("checkout: moving from ");
1187         target = strstr(message, " to ");
1188         if (!target)
1189                 return 0;
1190         target += strlen(" to ");
1191         strbuf_reset(&cb->buf);
1192         hashcpy(cb->nsha1, nsha1);
1193         for (end = target; *end && *end != '\n'; end++)
1194                 ;
1195         strbuf_add(&cb->buf, target, end - target);
1196         return 1;
1197 }
1198
1199 static void wt_status_get_detached_from(struct wt_status_state *state)
1200 {
1201         struct grab_1st_switch_cbdata cb;
1202         struct commit *commit;
1203         unsigned char sha1[20];
1204         char *ref = NULL;
1205
1206         strbuf_init(&cb.buf, 0);
1207         if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1208                 strbuf_release(&cb.buf);
1209                 return;
1210         }
1211
1212         if (dwim_ref(cb.buf.buf, cb.buf.len, sha1, &ref) == 1 &&
1213             /* sha1 is a commit? match without further lookup */
1214             (!hashcmp(cb.nsha1, sha1) ||
1215              /* perhaps sha1 is a tag, try to dereference to a commit */
1216              ((commit = lookup_commit_reference_gently(sha1, 1)) != NULL &&
1217               !hashcmp(cb.nsha1, commit->object.sha1)))) {
1218                 int ofs;
1219                 if (starts_with(ref, "refs/tags/"))
1220                         ofs = strlen("refs/tags/");
1221                 else if (starts_with(ref, "refs/remotes/"))
1222                         ofs = strlen("refs/remotes/");
1223                 else
1224                         ofs = 0;
1225                 state->detached_from = xstrdup(ref + ofs);
1226         } else
1227                 state->detached_from =
1228                         xstrdup(find_unique_abbrev(cb.nsha1, DEFAULT_ABBREV));
1229         hashcpy(state->detached_sha1, cb.nsha1);
1230
1231         free(ref);
1232         strbuf_release(&cb.buf);
1233 }
1234
1235 void wt_status_get_state(struct wt_status_state *state,
1236                          int get_detached_from)
1237 {
1238         struct stat st;
1239         unsigned char sha1[20];
1240
1241         if (!stat(git_path("MERGE_HEAD"), &st)) {
1242                 state->merge_in_progress = 1;
1243         } else if (!stat(git_path("rebase-apply"), &st)) {
1244                 if (!stat(git_path("rebase-apply/applying"), &st)) {
1245                         state->am_in_progress = 1;
1246                         if (!stat(git_path("rebase-apply/patch"), &st) && !st.st_size)
1247                                 state->am_empty_patch = 1;
1248                 } else {
1249                         state->rebase_in_progress = 1;
1250                         state->branch = read_and_strip_branch("rebase-apply/head-name");
1251                         state->onto = read_and_strip_branch("rebase-apply/onto");
1252                 }
1253         } else if (!stat(git_path("rebase-merge"), &st)) {
1254                 if (!stat(git_path("rebase-merge/interactive"), &st))
1255                         state->rebase_interactive_in_progress = 1;
1256                 else
1257                         state->rebase_in_progress = 1;
1258                 state->branch = read_and_strip_branch("rebase-merge/head-name");
1259                 state->onto = read_and_strip_branch("rebase-merge/onto");
1260         } else if (!stat(git_path("CHERRY_PICK_HEAD"), &st) &&
1261                         !get_sha1("CHERRY_PICK_HEAD", sha1)) {
1262                 state->cherry_pick_in_progress = 1;
1263                 hashcpy(state->cherry_pick_head_sha1, sha1);
1264         }
1265         if (!stat(git_path("BISECT_LOG"), &st)) {
1266                 state->bisect_in_progress = 1;
1267                 state->branch = read_and_strip_branch("BISECT_START");
1268         }
1269         if (!stat(git_path("REVERT_HEAD"), &st) &&
1270             !get_sha1("REVERT_HEAD", sha1)) {
1271                 state->revert_in_progress = 1;
1272                 hashcpy(state->revert_head_sha1, sha1);
1273         }
1274
1275         if (get_detached_from)
1276                 wt_status_get_detached_from(state);
1277 }
1278
1279 static void wt_status_print_state(struct wt_status *s,
1280                                   struct wt_status_state *state)
1281 {
1282         const char *state_color = color(WT_STATUS_HEADER, s);
1283         if (state->merge_in_progress)
1284                 show_merge_in_progress(s, state, state_color);
1285         else if (state->am_in_progress)
1286                 show_am_in_progress(s, state, state_color);
1287         else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1288                 show_rebase_in_progress(s, state, state_color);
1289         else if (state->cherry_pick_in_progress)
1290                 show_cherry_pick_in_progress(s, state, state_color);
1291         else if (state->revert_in_progress)
1292                 show_revert_in_progress(s, state, state_color);
1293         if (state->bisect_in_progress)
1294                 show_bisect_in_progress(s, state, state_color);
1295 }
1296
1297 void wt_status_print(struct wt_status *s)
1298 {
1299         const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1300         const char *branch_status_color = color(WT_STATUS_HEADER, s);
1301         struct wt_status_state state;
1302
1303         memset(&state, 0, sizeof(state));
1304         wt_status_get_state(&state,
1305                             s->branch && !strcmp(s->branch, "HEAD"));
1306
1307         if (s->branch) {
1308                 const char *on_what = _("On branch ");
1309                 const char *branch_name = s->branch;
1310                 if (starts_with(branch_name, "refs/heads/"))
1311                         branch_name += 11;
1312                 else if (!strcmp(branch_name, "HEAD")) {
1313                         branch_status_color = color(WT_STATUS_NOBRANCH, s);
1314                         if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1315                                 on_what = _("rebase in progress; onto ");
1316                                 branch_name = state.onto;
1317                         } else if (state.detached_from) {
1318                                 unsigned char sha1[20];
1319                                 branch_name = state.detached_from;
1320                                 if (!get_sha1("HEAD", sha1) &&
1321                                     !hashcmp(sha1, state.detached_sha1))
1322                                         on_what = _("HEAD detached at ");
1323                                 else
1324                                         on_what = _("HEAD detached from ");
1325                         } else {
1326                                 branch_name = "";
1327                                 on_what = _("Not currently on any branch.");
1328                         }
1329                 }
1330                 status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1331                 status_printf_more(s, branch_status_color, "%s", on_what);
1332                 status_printf_more(s, branch_color, "%s\n", branch_name);
1333                 if (!s->is_initial)
1334                         wt_status_print_tracking(s);
1335         }
1336
1337         wt_status_print_state(s, &state);
1338         free(state.branch);
1339         free(state.onto);
1340         free(state.detached_from);
1341
1342         if (s->is_initial) {
1343                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1344                 status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
1345                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1346         }
1347
1348         wt_status_print_updated(s);
1349         wt_status_print_unmerged(s);
1350         wt_status_print_changed(s);
1351         if (s->submodule_summary &&
1352             (!s->ignore_submodule_arg ||
1353              strcmp(s->ignore_submodule_arg, "all"))) {
1354                 wt_status_print_submodule_summary(s, 0);  /* staged */
1355                 wt_status_print_submodule_summary(s, 1);  /* unstaged */
1356         }
1357         if (s->show_untracked_files) {
1358                 wt_status_print_other(s, &s->untracked, _("Untracked files"), "add");
1359                 if (s->show_ignored_files)
1360                         wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1361                 if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1362                         status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1363                         status_printf_ln(s, GIT_COLOR_NORMAL,
1364                                          _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1365                                            "may speed it up, but you have to be careful not to forget to add\n"
1366                                            "new files yourself (see 'git help status')."),
1367                                          s->untracked_in_ms / 1000.0);
1368                 }
1369         } else if (s->commitable)
1370                 status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1371                         s->hints
1372                         ? _(" (use -u option to show untracked files)") : "");
1373
1374         if (s->verbose)
1375                 wt_status_print_verbose(s);
1376         if (!s->commitable) {
1377                 if (s->amend)
1378                         status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1379                 else if (s->nowarn)
1380                         ; /* nothing */
1381                 else if (s->workdir_dirty) {
1382                         if (s->hints)
1383                                 printf(_("no changes added to commit "
1384                                          "(use \"git add\" and/or \"git commit -a\")\n"));
1385                         else
1386                                 printf(_("no changes added to commit\n"));
1387                 } else if (s->untracked.nr) {
1388                         if (s->hints)
1389                                 printf(_("nothing added to commit but untracked files "
1390                                          "present (use \"git add\" to track)\n"));
1391                         else
1392                                 printf(_("nothing added to commit but untracked files present\n"));
1393                 } else if (s->is_initial) {
1394                         if (s->hints)
1395                                 printf(_("nothing to commit (create/copy files "
1396                                          "and use \"git add\" to track)\n"));
1397                         else
1398                                 printf(_("nothing to commit\n"));
1399                 } else if (!s->show_untracked_files) {
1400                         if (s->hints)
1401                                 printf(_("nothing to commit (use -u to show untracked files)\n"));
1402                         else
1403                                 printf(_("nothing to commit\n"));
1404                 } else
1405                         printf(_("nothing to commit, working directory clean\n"));
1406         }
1407 }
1408
1409 static void wt_shortstatus_unmerged(struct string_list_item *it,
1410                            struct wt_status *s)
1411 {
1412         struct wt_status_change_data *d = it->util;
1413         const char *how = "??";
1414
1415         switch (d->stagemask) {
1416         case 1: how = "DD"; break; /* both deleted */
1417         case 2: how = "AU"; break; /* added by us */
1418         case 3: how = "UD"; break; /* deleted by them */
1419         case 4: how = "UA"; break; /* added by them */
1420         case 5: how = "DU"; break; /* deleted by us */
1421         case 6: how = "AA"; break; /* both added */
1422         case 7: how = "UU"; break; /* both modified */
1423         }
1424         color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1425         if (s->null_termination) {
1426                 fprintf(stdout, " %s%c", it->string, 0);
1427         } else {
1428                 struct strbuf onebuf = STRBUF_INIT;
1429                 const char *one;
1430                 one = quote_path(it->string, s->prefix, &onebuf);
1431                 printf(" %s\n", one);
1432                 strbuf_release(&onebuf);
1433         }
1434 }
1435
1436 static void wt_shortstatus_status(struct string_list_item *it,
1437                          struct wt_status *s)
1438 {
1439         struct wt_status_change_data *d = it->util;
1440
1441         if (d->index_status)
1442                 color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1443         else
1444                 putchar(' ');
1445         if (d->worktree_status)
1446                 color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1447         else
1448                 putchar(' ');
1449         putchar(' ');
1450         if (s->null_termination) {
1451                 fprintf(stdout, "%s%c", it->string, 0);
1452                 if (d->head_path)
1453                         fprintf(stdout, "%s%c", d->head_path, 0);
1454         } else {
1455                 struct strbuf onebuf = STRBUF_INIT;
1456                 const char *one;
1457                 if (d->head_path) {
1458                         one = quote_path(d->head_path, s->prefix, &onebuf);
1459                         if (*one != '"' && strchr(one, ' ') != NULL) {
1460                                 putchar('"');
1461                                 strbuf_addch(&onebuf, '"');
1462                                 one = onebuf.buf;
1463                         }
1464                         printf("%s -> ", one);
1465                         strbuf_release(&onebuf);
1466                 }
1467                 one = quote_path(it->string, s->prefix, &onebuf);
1468                 if (*one != '"' && strchr(one, ' ') != NULL) {
1469                         putchar('"');
1470                         strbuf_addch(&onebuf, '"');
1471                         one = onebuf.buf;
1472                 }
1473                 printf("%s\n", one);
1474                 strbuf_release(&onebuf);
1475         }
1476 }
1477
1478 static void wt_shortstatus_other(struct string_list_item *it,
1479                                  struct wt_status *s, const char *sign)
1480 {
1481         if (s->null_termination) {
1482                 fprintf(stdout, "%s %s%c", sign, it->string, 0);
1483         } else {
1484                 struct strbuf onebuf = STRBUF_INIT;
1485                 const char *one;
1486                 one = quote_path(it->string, s->prefix, &onebuf);
1487                 color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1488                 printf(" %s\n", one);
1489                 strbuf_release(&onebuf);
1490         }
1491 }
1492
1493 static void wt_shortstatus_print_tracking(struct wt_status *s)
1494 {
1495         struct branch *branch;
1496         const char *header_color = color(WT_STATUS_HEADER, s);
1497         const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1498         const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1499
1500         const char *base;
1501         const char *branch_name;
1502         int num_ours, num_theirs;
1503         int upstream_is_gone = 0;
1504
1505         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1506
1507         if (!s->branch)
1508                 return;
1509         branch_name = s->branch;
1510
1511         if (starts_with(branch_name, "refs/heads/"))
1512                 branch_name += 11;
1513         else if (!strcmp(branch_name, "HEAD")) {
1514                 branch_name = _("HEAD (no branch)");
1515                 branch_color_local = color(WT_STATUS_NOBRANCH, s);
1516         }
1517
1518         branch = branch_get(s->branch + 11);
1519         if (s->is_initial)
1520                 color_fprintf(s->fp, header_color, _("Initial commit on "));
1521
1522         color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1523
1524         switch (stat_tracking_info(branch, &num_ours, &num_theirs)) {
1525         case 0:
1526                 /* no base */
1527                 fputc(s->null_termination ? '\0' : '\n', s->fp);
1528                 return;
1529         case -1:
1530                 /* with "gone" base */
1531                 upstream_is_gone = 1;
1532                 break;
1533         default:
1534                 /* with base */
1535                 break;
1536         }
1537
1538         base = branch->merge[0]->dst;
1539         base = shorten_unambiguous_ref(base, 0);
1540         color_fprintf(s->fp, header_color, "...");
1541         color_fprintf(s->fp, branch_color_remote, "%s", base);
1542
1543         if (!upstream_is_gone && !num_ours && !num_theirs) {
1544                 fputc(s->null_termination ? '\0' : '\n', s->fp);
1545                 return;
1546         }
1547
1548 #define LABEL(string) (s->no_gettext ? (string) : _(string))
1549
1550         color_fprintf(s->fp, header_color, " [");
1551         if (upstream_is_gone) {
1552                 color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1553         } else if (!num_ours) {
1554                 color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1555                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1556         } else if (!num_theirs) {
1557                 color_fprintf(s->fp, header_color, LABEL(N_(("ahead "))));
1558                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1559         } else {
1560                 color_fprintf(s->fp, header_color, LABEL(N_(("ahead "))));
1561                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1562                 color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1563                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1564         }
1565
1566         color_fprintf(s->fp, header_color, "]");
1567         fputc(s->null_termination ? '\0' : '\n', s->fp);
1568 }
1569
1570 void wt_shortstatus_print(struct wt_status *s)
1571 {
1572         int i;
1573
1574         if (s->show_branch)
1575                 wt_shortstatus_print_tracking(s);
1576
1577         for (i = 0; i < s->change.nr; i++) {
1578                 struct wt_status_change_data *d;
1579                 struct string_list_item *it;
1580
1581                 it = &(s->change.items[i]);
1582                 d = it->util;
1583                 if (d->stagemask)
1584                         wt_shortstatus_unmerged(it, s);
1585                 else
1586                         wt_shortstatus_status(it, s);
1587         }
1588         for (i = 0; i < s->untracked.nr; i++) {
1589                 struct string_list_item *it;
1590
1591                 it = &(s->untracked.items[i]);
1592                 wt_shortstatus_other(it, s, "??");
1593         }
1594         for (i = 0; i < s->ignored.nr; i++) {
1595                 struct string_list_item *it;
1596
1597                 it = &(s->ignored.items[i]);
1598                 wt_shortstatus_other(it, s, "!!");
1599         }
1600 }
1601
1602 void wt_porcelain_print(struct wt_status *s)
1603 {
1604         s->use_color = 0;
1605         s->relative_paths = 0;
1606         s->prefix = NULL;
1607         s->no_gettext = 1;
1608         wt_shortstatus_print(s);
1609 }