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", 0, sha1, 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 strbuf cmd_stdout = STRBUF_INIT;
 730         struct strbuf summary = STRBUF_INIT;
 731         char *summary_content;
 732         size_t len;
 733
 734         argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 735                          s->index_file);
 736
 737         argv_array_push(&sm_summary.args, "submodule");
 738         argv_array_push(&sm_summary.args, "summary");
 739         argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 740         argv_array_push(&sm_summary.args, "--for-status");
 741         argv_array_push(&sm_summary.args, "--summary-limit");
 742         argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 743         if (!uncommitted)
 744                 argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 745
 746         sm_summary.git_cmd = 1;
 747         sm_summary.no_stdin = 1;
 748         fflush(s->fp);
 749         sm_summary.out = -1;
 750
 751         run_command(&sm_summary);
 752
 753         len = strbuf_read(&cmd_stdout, sm_summary.out, 1024);
 754
 755         /* prepend header, only if there's an actual output */
 756         if (len) {
 757                 if (uncommitted)
 758                         strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 759                 else
 760                         strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 761                 strbuf_addstr(&summary, "\n\n");
 762         }
 763         strbuf_addbuf(&summary, &cmd_stdout);
 764         strbuf_release(&cmd_stdout);
 765
 766         if (s->display_comment_prefix) {
 767                 summary_content = strbuf_detach(&summary, &len);
 768                 strbuf_add_commented_lines(&summary, summary_content, len);
 769                 free(summary_content);
 770         }
 771
 772         fputs(summary.buf, s->fp);
 773         strbuf_release(&summary);
 774 }
 775
 776 static void wt_status_print_other(struct wt_status *s,
 777                                   struct string_list *l,
 778                                   const char *what,
 779                                   const char *how)
 780 {
 781         int i;
 782         struct strbuf buf = STRBUF_INIT;
 783         static struct string_list output = STRING_LIST_INIT_DUP;
 784         struct column_options copts;
 785
 786         if (!l->nr)
 787                 return;
 788
 789         wt_status_print_other_header(s, what, how);
 790
 791         for (i = 0; i < l->nr; i++) {
 792                 struct string_list_item *it;
 793                 const char *path;
 794                 it = &(l->items[i]);
 795                 path = quote_path(it->string, s->prefix, &buf);
 796                 if (column_active(s->colopts)) {
 797                         string_list_append(&output, path);
 798                         continue;
 799                 }
 800                 status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 801                 status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 802                                    "%s\n", path);
 803         }
 804
 805         strbuf_release(&buf);
 806         if (!column_active(s->colopts))
 807                 goto conclude;
 808
 809         strbuf_addf(&buf, "%s%s\t%s",
 810                     color(WT_STATUS_HEADER, s),
 811                     s->display_comment_prefix ? "#" : "",
 812                     color(WT_STATUS_UNTRACKED, s));
 813         memset(&copts, 0, sizeof(copts));
 814         copts.padding = 1;
 815         copts.indent = buf.buf;
 816         if (want_color(s->use_color))
 817                 copts.nl = GIT_COLOR_RESET "\n";
 818         print_columns(&output, s->colopts, &copts);
 819         string_list_clear(&output, 0);
 820         strbuf_release(&buf);
 821 conclude:
 822         status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 823 }
 824
 825 void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
 826 {
 827         const char *p;
 828         struct strbuf pattern = STRBUF_INIT;
 829
 830         strbuf_addf(&pattern, "%c %s", comment_line_char, cut_line);
 831         p = strstr(buf->buf, pattern.buf);
 832         if (p && (p == buf->buf || p[-1] == '\n'))
 833                 strbuf_setlen(buf, p - buf->buf);
 834         strbuf_release(&pattern);
 835 }
 836
 837 void wt_status_add_cut_line(FILE *fp)
 838 {
 839         const char *explanation = _("Do not touch the line above.\nEverything below will be removed.");
 840         struct strbuf buf = STRBUF_INIT;
 841
 842         fprintf(fp, "%c %s", comment_line_char, cut_line);
 843         strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
 844         fputs(buf.buf, fp);
 845         strbuf_release(&buf);
 846 }
 847
 848 static void wt_status_print_verbose(struct wt_status *s)
 849 {
 850         struct rev_info rev;
 851         struct setup_revision_opt opt;
 852         int dirty_submodules;
 853         const char *c = color(WT_STATUS_HEADER, s);
 854
 855         init_revisions(&rev, NULL);
 856         DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
 857
 858         memset(&opt, 0, sizeof(opt));
 859         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 860         setup_revisions(0, NULL, &rev, &opt);
 861
 862         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 863         rev.diffopt.detect_rename = 1;
 864         rev.diffopt.file = s->fp;
 865         rev.diffopt.close_file = 0;
 866         /*
 867          * If we're not going to stdout, then we definitely don't
 868          * want color, since we are going to the commit message
 869          * file (and even the "auto" setting won't work, since it
 870          * will have checked isatty on stdout). But we then do want
 871          * to insert the scissor line here to reliably remove the
 872          * diff before committing.
 873          */
 874         if (s->fp != stdout) {
 875                 rev.diffopt.use_color = 0;
 876                 wt_status_add_cut_line(s->fp);
 877         }
 878         if (s->verbose > 1 && s->commitable) {
 879                 /* print_updated() printed a header, so do we */
 880                 if (s->fp != stdout)
 881                         wt_status_print_trailer(s);
 882                 status_printf_ln(s, c, _("Changes to be committed:"));
 883                 rev.diffopt.a_prefix = "c/";
 884                 rev.diffopt.b_prefix = "i/";
 885         } /* else use prefix as per user config */
 886         run_diff_index(&rev, 1);
 887         if (s->verbose > 1 &&
 888             wt_status_check_worktree_changes(s, &dirty_submodules)) {
 889                 status_printf_ln(s, c,
 890                         "--------------------------------------------------");
 891                 status_printf_ln(s, c, _("Changes not staged for commit:"));
 892                 setup_work_tree();
 893                 rev.diffopt.a_prefix = "i/";
 894                 rev.diffopt.b_prefix = "w/";
 895                 run_diff_files(&rev, 0);
 896         }
 897 }
 898
 899 static void wt_status_print_tracking(struct wt_status *s)
 900 {
 901         struct strbuf sb = STRBUF_INIT;
 902         const char *cp, *ep;
 903         struct branch *branch;
 904         char comment_line_string[3];
 905         int i;
 906
 907         assert(s->branch && !s->is_initial);
 908         if (!starts_with(s->branch, "refs/heads/"))
 909                 return;
 910         branch = branch_get(s->branch + 11);
 911         if (!format_tracking_info(branch, &sb))
 912                 return;
 913
 914         i = 0;
 915         if (s->display_comment_prefix) {
 916                 comment_line_string[i++] = comment_line_char;
 917                 comment_line_string[i++] = ' ';
 918         }
 919         comment_line_string[i] = '\0';
 920
 921         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
 922                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
 923                                  "%s%.*s", comment_line_string,
 924                                  (int)(ep - cp), cp);
 925         if (s->display_comment_prefix)
 926                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
 927                                  comment_line_char);
 928         else
 929                 fputs("", s->fp);
 930 }
 931
 932 static int has_unmerged(struct wt_status *s)
 933 {
 934         int i;
 935
 936         for (i = 0; i < s->change.nr; i++) {
 937                 struct wt_status_change_data *d;
 938                 d = s->change.items[i].util;
 939                 if (d->stagemask)
 940                         return 1;
 941         }
 942         return 0;
 943 }
 944
 945 static void show_merge_in_progress(struct wt_status *s,
 946                                 struct wt_status_state *state,
 947                                 const char *color)
 948 {
 949         if (has_unmerged(s)) {
 950                 status_printf_ln(s, color, _("You have unmerged paths."));
 951                 if (s->hints)
 952                         status_printf_ln(s, color,
 953                                 _("  (fix conflicts and run \"git commit\")"));
 954         } else {
 955                 status_printf_ln(s, color,
 956                         _("All conflicts fixed but you are still merging."));
 957                 if (s->hints)
 958                         status_printf_ln(s, color,
 959                                 _("  (use \"git commit\" to conclude merge)"));
 960         }
 961         wt_status_print_trailer(s);
 962 }
 963
 964 static void show_am_in_progress(struct wt_status *s,
 965                                 struct wt_status_state *state,
 966                                 const char *color)
 967 {
 968         status_printf_ln(s, color,
 969                 _("You are in the middle of an am session."));
 970         if (state->am_empty_patch)
 971                 status_printf_ln(s, color,
 972                         _("The current patch is empty."));
 973         if (s->hints) {
 974                 if (!state->am_empty_patch)
 975                         status_printf_ln(s, color,
 976                                 _("  (fix conflicts and then run \"git am --continue\")"));
 977                 status_printf_ln(s, color,
 978                         _("  (use \"git am --skip\" to skip this patch)"));
 979                 status_printf_ln(s, color,
 980                         _("  (use \"git am --abort\" to restore the original branch)"));
 981         }
 982         wt_status_print_trailer(s);
 983 }
 984
 985 static char *read_line_from_git_path(const char *filename)
 986 {
 987         struct strbuf buf = STRBUF_INIT;
 988         FILE *fp = fopen(git_path("%s", filename), "r");
 989         if (!fp) {
 990                 strbuf_release(&buf);
 991                 return NULL;
 992         }
 993         strbuf_getline(&buf, fp, '\n');
 994         if (!fclose(fp)) {
 995                 return strbuf_detach(&buf, NULL);
 996         } else {
 997                 strbuf_release(&buf);
 998                 return NULL;
 999         }
1000 }
1001
1002 static int split_commit_in_progress(struct wt_status *s)
1003 {
1004         int split_in_progress = 0;
1005         char *head = read_line_from_git_path("HEAD");
1006         char *orig_head = read_line_from_git_path("ORIG_HEAD");
1007         char *rebase_amend = read_line_from_git_path("rebase-merge/amend");
1008         char *rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1009
1010         if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
1011             !s->branch || strcmp(s->branch, "HEAD"))
1012                 return split_in_progress;
1013
1014         if (!strcmp(rebase_amend, rebase_orig_head)) {
1015                 if (strcmp(head, rebase_amend))
1016                         split_in_progress = 1;
1017         } else if (strcmp(orig_head, rebase_orig_head)) {
1018                 split_in_progress = 1;
1019         }
1020
1021         if (!s->amend && !s->nowarn && !s->workdir_dirty)
1022                 split_in_progress = 0;
1023
1024         free(head);
1025         free(orig_head);
1026         free(rebase_amend);
1027         free(rebase_orig_head);
1028         return split_in_progress;
1029 }
1030
1031 static void show_rebase_in_progress(struct wt_status *s,
1032                                 struct wt_status_state *state,
1033                                 const char *color)
1034 {
1035         struct stat st;
1036
1037         if (has_unmerged(s)) {
1038                 if (state->branch)
1039                         status_printf_ln(s, color,
1040                                          _("You are currently rebasing branch '%s' on '%s'."),
1041                                          state->branch,
1042                                          state->onto);
1043                 else
1044                         status_printf_ln(s, color,
1045                                          _("You are currently rebasing."));
1046                 if (s->hints) {
1047                         status_printf_ln(s, color,
1048                                 _("  (fix conflicts and then run \"git rebase --continue\")"));
1049                         status_printf_ln(s, color,
1050                                 _("  (use \"git rebase --skip\" to skip this patch)"));
1051                         status_printf_ln(s, color,
1052                                 _("  (use \"git rebase --abort\" to check out the original branch)"));
1053                 }
1054         } else if (state->rebase_in_progress || !stat(git_path("MERGE_MSG"), &st)) {
1055                 if (state->branch)
1056                         status_printf_ln(s, color,
1057                                          _("You are currently rebasing branch '%s' on '%s'."),
1058                                          state->branch,
1059                                          state->onto);
1060                 else
1061                         status_printf_ln(s, color,
1062                                          _("You are currently rebasing."));
1063                 if (s->hints)
1064                         status_printf_ln(s, color,
1065                                 _("  (all conflicts fixed: run \"git rebase --continue\")"));
1066         } else if (split_commit_in_progress(s)) {
1067                 if (state->branch)
1068                         status_printf_ln(s, color,
1069                                          _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1070                                          state->branch,
1071                                          state->onto);
1072                 else
1073                         status_printf_ln(s, color,
1074                                          _("You are currently splitting a commit during a rebase."));
1075                 if (s->hints)
1076                         status_printf_ln(s, color,
1077                                 _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1078         } else {
1079                 if (state->branch)
1080                         status_printf_ln(s, color,
1081                                          _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1082                                          state->branch,
1083                                          state->onto);
1084                 else
1085                         status_printf_ln(s, color,
1086                                          _("You are currently editing a commit during a rebase."));
1087                 if (s->hints && !s->amend) {
1088                         status_printf_ln(s, color,
1089                                 _("  (use \"git commit --amend\" to amend the current commit)"));
1090                         status_printf_ln(s, color,
1091                                 _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1092                 }
1093         }
1094         wt_status_print_trailer(s);
1095 }
1096
1097 static void show_cherry_pick_in_progress(struct wt_status *s,
1098                                         struct wt_status_state *state,
1099                                         const char *color)
1100 {
1101         status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1102                         find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1103         if (s->hints) {
1104                 if (has_unmerged(s))
1105                         status_printf_ln(s, color,
1106                                 _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1107                 else
1108                         status_printf_ln(s, color,
1109                                 _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1110                 status_printf_ln(s, color,
1111                         _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1112         }
1113         wt_status_print_trailer(s);
1114 }
1115
1116 static void show_revert_in_progress(struct wt_status *s,
1117                                         struct wt_status_state *state,
1118                                         const char *color)
1119 {
1120         status_printf_ln(s, color, _("You are currently reverting commit %s."),
1121                          find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1122         if (s->hints) {
1123                 if (has_unmerged(s))
1124                         status_printf_ln(s, color,
1125                                 _("  (fix conflicts and run \"git revert --continue\")"));
1126                 else
1127                         status_printf_ln(s, color,
1128                                 _("  (all conflicts fixed: run \"git revert --continue\")"));
1129                 status_printf_ln(s, color,
1130                         _("  (use \"git revert --abort\" to cancel the revert operation)"));
1131         }
1132         wt_status_print_trailer(s);
1133 }
1134
1135 static void show_bisect_in_progress(struct wt_status *s,
1136                                 struct wt_status_state *state,
1137                                 const char *color)
1138 {
1139         if (state->branch)
1140                 status_printf_ln(s, color,
1141                                  _("You are currently bisecting, started from branch '%s'."),
1142                                  state->branch);
1143         else
1144                 status_printf_ln(s, color,
1145                                  _("You are currently bisecting."));
1146         if (s->hints)
1147                 status_printf_ln(s, color,
1148                         _("  (use \"git bisect reset\" to get back to the original branch)"));
1149         wt_status_print_trailer(s);
1150 }
1151
1152 /*
1153  * Extract branch information from rebase/bisect
1154  */
1155 static char *read_and_strip_branch(const char *path)
1156 {
1157         struct strbuf sb = STRBUF_INIT;
1158         unsigned char sha1[20];
1159
1160         if (strbuf_read_file(&sb, git_path("%s", path), 0) <= 0)
1161                 goto got_nothing;
1162
1163         while (sb.len && sb.buf[sb.len - 1] == '\n')
1164                 strbuf_setlen(&sb, sb.len - 1);
1165         if (!sb.len)
1166                 goto got_nothing;
1167         if (starts_with(sb.buf, "refs/heads/"))
1168                 strbuf_remove(&sb,0, strlen("refs/heads/"));
1169         else if (starts_with(sb.buf, "refs/"))
1170                 ;
1171         else if (!get_sha1_hex(sb.buf, sha1)) {
1172                 const char *abbrev;
1173                 abbrev = find_unique_abbrev(sha1, DEFAULT_ABBREV);
1174                 strbuf_reset(&sb);
1175                 strbuf_addstr(&sb, abbrev);
1176         } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1177                 goto got_nothing;
1178         else                    /* bisect */
1179                 ;
1180         return strbuf_detach(&sb, NULL);
1181
1182 got_nothing:
1183         strbuf_release(&sb);
1184         return NULL;
1185 }
1186
1187 struct grab_1st_switch_cbdata {
1188         struct strbuf buf;
1189         unsigned char nsha1[20];
1190 };
1191
1192 static int grab_1st_switch(unsigned char *osha1, unsigned char *nsha1,
1193                            const char *email, unsigned long timestamp, int tz,
1194                            const char *message, void *cb_data)
1195 {
1196         struct grab_1st_switch_cbdata *cb = cb_data;
1197         const char *target = NULL, *end;
1198
1199         if (!starts_with(message, "checkout: moving from "))
1200                 return 0;
1201         message += strlen("checkout: moving from ");
1202         target = strstr(message, " to ");
1203         if (!target)
1204                 return 0;
1205         target += strlen(" to ");
1206         strbuf_reset(&cb->buf);
1207         hashcpy(cb->nsha1, nsha1);
1208         for (end = target; *end && *end != '\n'; end++)
1209                 ;
1210         strbuf_add(&cb->buf, target, end - target);
1211         return 1;
1212 }
1213
1214 static void wt_status_get_detached_from(struct wt_status_state *state)
1215 {
1216         struct grab_1st_switch_cbdata cb;
1217         struct commit *commit;
1218         unsigned char sha1[20];
1219         char *ref = NULL;
1220
1221         strbuf_init(&cb.buf, 0);
1222         if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1223                 strbuf_release(&cb.buf);
1224                 return;
1225         }
1226
1227         if (dwim_ref(cb.buf.buf, cb.buf.len, sha1, &ref) == 1 &&
1228             /* sha1 is a commit? match without further lookup */
1229             (!hashcmp(cb.nsha1, sha1) ||
1230              /* perhaps sha1 is a tag, try to dereference to a commit */
1231              ((commit = lookup_commit_reference_gently(sha1, 1)) != NULL &&
1232               !hashcmp(cb.nsha1, commit->object.sha1)))) {
1233                 int ofs;
1234                 if (starts_with(ref, "refs/tags/"))
1235                         ofs = strlen("refs/tags/");
1236                 else if (starts_with(ref, "refs/remotes/"))
1237                         ofs = strlen("refs/remotes/");
1238                 else
1239                         ofs = 0;
1240                 state->detached_from = xstrdup(ref + ofs);
1241         } else
1242                 state->detached_from =
1243                         xstrdup(find_unique_abbrev(cb.nsha1, DEFAULT_ABBREV));
1244         hashcpy(state->detached_sha1, cb.nsha1);
1245         state->detached_at = !get_sha1("HEAD", sha1) &&
1246                              !hashcmp(sha1, state->detached_sha1);
1247
1248         free(ref);
1249         strbuf_release(&cb.buf);
1250 }
1251
1252 void wt_status_get_state(struct wt_status_state *state,
1253                          int get_detached_from)
1254 {
1255         struct stat st;
1256         unsigned char sha1[20];
1257
1258         if (!stat(git_path("MERGE_HEAD"), &st)) {
1259                 state->merge_in_progress = 1;
1260         } else if (!stat(git_path("rebase-apply"), &st)) {
1261                 if (!stat(git_path("rebase-apply/applying"), &st)) {
1262                         state->am_in_progress = 1;
1263                         if (!stat(git_path("rebase-apply/patch"), &st) && !st.st_size)
1264                                 state->am_empty_patch = 1;
1265                 } else {
1266                         state->rebase_in_progress = 1;
1267                         state->branch = read_and_strip_branch("rebase-apply/head-name");
1268                         state->onto = read_and_strip_branch("rebase-apply/onto");
1269                 }
1270         } else if (!stat(git_path("rebase-merge"), &st)) {
1271                 if (!stat(git_path("rebase-merge/interactive"), &st))
1272                         state->rebase_interactive_in_progress = 1;
1273                 else
1274                         state->rebase_in_progress = 1;
1275                 state->branch = read_and_strip_branch("rebase-merge/head-name");
1276                 state->onto = read_and_strip_branch("rebase-merge/onto");
1277         } else if (!stat(git_path("CHERRY_PICK_HEAD"), &st) &&
1278                         !get_sha1("CHERRY_PICK_HEAD", sha1)) {
1279                 state->cherry_pick_in_progress = 1;
1280                 hashcpy(state->cherry_pick_head_sha1, sha1);
1281         }
1282         if (!stat(git_path("BISECT_LOG"), &st)) {
1283                 state->bisect_in_progress = 1;
1284                 state->branch = read_and_strip_branch("BISECT_START");
1285         }
1286         if (!stat(git_path("REVERT_HEAD"), &st) &&
1287             !get_sha1("REVERT_HEAD", sha1)) {
1288                 state->revert_in_progress = 1;
1289                 hashcpy(state->revert_head_sha1, sha1);
1290         }
1291
1292         if (get_detached_from)
1293                 wt_status_get_detached_from(state);
1294 }
1295
1296 static void wt_status_print_state(struct wt_status *s,
1297                                   struct wt_status_state *state)
1298 {
1299         const char *state_color = color(WT_STATUS_HEADER, s);
1300         if (state->merge_in_progress)
1301                 show_merge_in_progress(s, state, state_color);
1302         else if (state->am_in_progress)
1303                 show_am_in_progress(s, state, state_color);
1304         else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1305                 show_rebase_in_progress(s, state, state_color);
1306         else if (state->cherry_pick_in_progress)
1307                 show_cherry_pick_in_progress(s, state, state_color);
1308         else if (state->revert_in_progress)
1309                 show_revert_in_progress(s, state, state_color);
1310         if (state->bisect_in_progress)
1311                 show_bisect_in_progress(s, state, state_color);
1312 }
1313
1314 void wt_status_print(struct wt_status *s)
1315 {
1316         const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1317         const char *branch_status_color = color(WT_STATUS_HEADER, s);
1318         struct wt_status_state state;
1319
1320         memset(&state, 0, sizeof(state));
1321         wt_status_get_state(&state,
1322                             s->branch && !strcmp(s->branch, "HEAD"));
1323
1324         if (s->branch) {
1325                 const char *on_what = _("On branch ");
1326                 const char *branch_name = s->branch;
1327                 if (starts_with(branch_name, "refs/heads/"))
1328                         branch_name += 11;
1329                 else if (!strcmp(branch_name, "HEAD")) {
1330                         branch_status_color = color(WT_STATUS_NOBRANCH, s);
1331                         if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1332                                 on_what = _("rebase in progress; onto ");
1333                                 branch_name = state.onto;
1334                         } else if (state.detached_from) {
1335                                 branch_name = state.detached_from;
1336                                 if (state.detached_at)
1337                                         on_what = _("HEAD detached at ");
1338                                 else
1339                                         on_what = _("HEAD detached from ");
1340                         } else {
1341                                 branch_name = "";
1342                                 on_what = _("Not currently on any branch.");
1343                         }
1344                 }
1345                 status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1346                 status_printf_more(s, branch_status_color, "%s", on_what);
1347                 status_printf_more(s, branch_color, "%s\n", branch_name);
1348                 if (!s->is_initial)
1349                         wt_status_print_tracking(s);
1350         }
1351
1352         wt_status_print_state(s, &state);
1353         free(state.branch);
1354         free(state.onto);
1355         free(state.detached_from);
1356
1357         if (s->is_initial) {
1358                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1359                 status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
1360                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1361         }
1362
1363         wt_status_print_updated(s);
1364         wt_status_print_unmerged(s);
1365         wt_status_print_changed(s);
1366         if (s->submodule_summary &&
1367             (!s->ignore_submodule_arg ||
1368              strcmp(s->ignore_submodule_arg, "all"))) {
1369                 wt_status_print_submodule_summary(s, 0);  /* staged */
1370                 wt_status_print_submodule_summary(s, 1);  /* unstaged */
1371         }
1372         if (s->show_untracked_files) {
1373                 wt_status_print_other(s, &s->untracked, _("Untracked files"), "add");
1374                 if (s->show_ignored_files)
1375                         wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1376                 if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1377                         status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1378                         status_printf_ln(s, GIT_COLOR_NORMAL,
1379                                          _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1380                                            "may speed it up, but you have to be careful not to forget to add\n"
1381                                            "new files yourself (see 'git help status')."),
1382                                          s->untracked_in_ms / 1000.0);
1383                 }
1384         } else if (s->commitable)
1385                 status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1386                         s->hints
1387                         ? _(" (use -u option to show untracked files)") : "");
1388
1389         if (s->verbose)
1390                 wt_status_print_verbose(s);
1391         if (!s->commitable) {
1392                 if (s->amend)
1393                         status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1394                 else if (s->nowarn)
1395                         ; /* nothing */
1396                 else if (s->workdir_dirty) {
1397                         if (s->hints)
1398                                 printf(_("no changes added to commit "
1399                                          "(use \"git add\" and/or \"git commit -a\")\n"));
1400                         else
1401                                 printf(_("no changes added to commit\n"));
1402                 } else if (s->untracked.nr) {
1403                         if (s->hints)
1404                                 printf(_("nothing added to commit but untracked files "
1405                                          "present (use \"git add\" to track)\n"));
1406                         else
1407                                 printf(_("nothing added to commit but untracked files present\n"));
1408                 } else if (s->is_initial) {
1409                         if (s->hints)
1410                                 printf(_("nothing to commit (create/copy files "
1411                                          "and use \"git add\" to track)\n"));
1412                         else
1413                                 printf(_("nothing to commit\n"));
1414                 } else if (!s->show_untracked_files) {
1415                         if (s->hints)
1416                                 printf(_("nothing to commit (use -u to show untracked files)\n"));
1417                         else
1418                                 printf(_("nothing to commit\n"));
1419                 } else
1420                         printf(_("nothing to commit, working directory clean\n"));
1421         }
1422 }
1423
1424 static void wt_shortstatus_unmerged(struct string_list_item *it,
1425                            struct wt_status *s)
1426 {
1427         struct wt_status_change_data *d = it->util;
1428         const char *how = "??";
1429
1430         switch (d->stagemask) {
1431         case 1: how = "DD"; break; /* both deleted */
1432         case 2: how = "AU"; break; /* added by us */
1433         case 3: how = "UD"; break; /* deleted by them */
1434         case 4: how = "UA"; break; /* added by them */
1435         case 5: how = "DU"; break; /* deleted by us */
1436         case 6: how = "AA"; break; /* both added */
1437         case 7: how = "UU"; break; /* both modified */
1438         }
1439         color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1440         if (s->null_termination) {
1441                 fprintf(stdout, " %s%c", it->string, 0);
1442         } else {
1443                 struct strbuf onebuf = STRBUF_INIT;
1444                 const char *one;
1445                 one = quote_path(it->string, s->prefix, &onebuf);
1446                 printf(" %s\n", one);
1447                 strbuf_release(&onebuf);
1448         }
1449 }
1450
1451 static void wt_shortstatus_status(struct string_list_item *it,
1452                          struct wt_status *s)
1453 {
1454         struct wt_status_change_data *d = it->util;
1455
1456         if (d->index_status)
1457                 color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1458         else
1459                 putchar(' ');
1460         if (d->worktree_status)
1461                 color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1462         else
1463                 putchar(' ');
1464         putchar(' ');
1465         if (s->null_termination) {
1466                 fprintf(stdout, "%s%c", it->string, 0);
1467                 if (d->head_path)
1468                         fprintf(stdout, "%s%c", d->head_path, 0);
1469         } else {
1470                 struct strbuf onebuf = STRBUF_INIT;
1471                 const char *one;
1472                 if (d->head_path) {
1473                         one = quote_path(d->head_path, s->prefix, &onebuf);
1474                         if (*one != '"' && strchr(one, ' ') != NULL) {
1475                                 putchar('"');
1476                                 strbuf_addch(&onebuf, '"');
1477                                 one = onebuf.buf;
1478                         }
1479                         printf("%s -> ", one);
1480                         strbuf_release(&onebuf);
1481                 }
1482                 one = quote_path(it->string, s->prefix, &onebuf);
1483                 if (*one != '"' && strchr(one, ' ') != NULL) {
1484                         putchar('"');
1485                         strbuf_addch(&onebuf, '"');
1486                         one = onebuf.buf;
1487                 }
1488                 printf("%s\n", one);
1489                 strbuf_release(&onebuf);
1490         }
1491 }
1492
1493 static void wt_shortstatus_other(struct string_list_item *it,
1494                                  struct wt_status *s, const char *sign)
1495 {
1496         if (s->null_termination) {
1497                 fprintf(stdout, "%s %s%c", sign, it->string, 0);
1498         } else {
1499                 struct strbuf onebuf = STRBUF_INIT;
1500                 const char *one;
1501                 one = quote_path(it->string, s->prefix, &onebuf);
1502                 color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1503                 printf(" %s\n", one);
1504                 strbuf_release(&onebuf);
1505         }
1506 }
1507
1508 static void wt_shortstatus_print_tracking(struct wt_status *s)
1509 {
1510         struct branch *branch;
1511         const char *header_color = color(WT_STATUS_HEADER, s);
1512         const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1513         const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1514
1515         const char *base;
1516         const char *branch_name;
1517         int num_ours, num_theirs;
1518         int upstream_is_gone = 0;
1519
1520         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1521
1522         if (!s->branch)
1523                 return;
1524         branch_name = s->branch;
1525
1526         if (starts_with(branch_name, "refs/heads/"))
1527                 branch_name += 11;
1528         else if (!strcmp(branch_name, "HEAD")) {
1529                 branch_name = _("HEAD (no branch)");
1530                 branch_color_local = color(WT_STATUS_NOBRANCH, s);
1531         }
1532
1533         branch = branch_get(s->branch + 11);
1534         if (s->is_initial)
1535                 color_fprintf(s->fp, header_color, _("Initial commit on "));
1536
1537         color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1538
1539         switch (stat_tracking_info(branch, &num_ours, &num_theirs)) {
1540         case 0:
1541                 /* no base */
1542                 fputc(s->null_termination ? '\0' : '\n', s->fp);
1543                 return;
1544         case -1:
1545                 /* with "gone" base */
1546                 upstream_is_gone = 1;
1547                 break;
1548         default:
1549                 /* with base */
1550                 break;
1551         }
1552
1553         base = branch->merge[0]->dst;
1554         base = shorten_unambiguous_ref(base, 0);
1555         color_fprintf(s->fp, header_color, "...");
1556         color_fprintf(s->fp, branch_color_remote, "%s", base);
1557
1558         if (!upstream_is_gone && !num_ours && !num_theirs) {
1559                 fputc(s->null_termination ? '\0' : '\n', s->fp);
1560                 return;
1561         }
1562
1563 #define LABEL(string) (s->no_gettext ? (string) : _(string))
1564
1565         color_fprintf(s->fp, header_color, " [");
1566         if (upstream_is_gone) {
1567                 color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1568         } else if (!num_ours) {
1569                 color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1570                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1571         } else if (!num_theirs) {
1572                 color_fprintf(s->fp, header_color, LABEL(N_(("ahead "))));
1573                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1574         } else {
1575                 color_fprintf(s->fp, header_color, LABEL(N_(("ahead "))));
1576                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1577                 color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1578                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1579         }
1580
1581         color_fprintf(s->fp, header_color, "]");
1582         fputc(s->null_termination ? '\0' : '\n', s->fp);
1583 }
1584
1585 void wt_shortstatus_print(struct wt_status *s)
1586 {
1587         int i;
1588
1589         if (s->show_branch)
1590                 wt_shortstatus_print_tracking(s);
1591
1592         for (i = 0; i < s->change.nr; i++) {
1593                 struct wt_status_change_data *d;
1594                 struct string_list_item *it;
1595
1596                 it = &(s->change.items[i]);
1597                 d = it->util;
1598                 if (d->stagemask)
1599                         wt_shortstatus_unmerged(it, s);
1600                 else
1601                         wt_shortstatus_status(it, s);
1602         }
1603         for (i = 0; i < s->untracked.nr; i++) {
1604                 struct string_list_item *it;
1605
1606                 it = &(s->untracked.items[i]);
1607                 wt_shortstatus_other(it, s, "??");
1608         }
1609         for (i = 0; i < s->ignored.nr; i++) {
1610                 struct string_list_item *it;
1611
1612                 it = &(s->ignored.items[i]);
1613                 wt_shortstatus_other(it, s, "!!");
1614         }
1615 }
1616
1617 void wt_porcelain_print(struct wt_status *s)
1618 {
1619         s->use_color = 0;
1620         s->relative_paths = 0;
1621         s->prefix = NULL;
1622         s->no_gettext = 1;
1623         wt_shortstatus_print(s);
1624 }