wt-status.c

   1 #include "cache.h"
   2 #include "wt-status.h"
   3 #include "object.h"
   4 #include "dir.h"
   5 #include "commit.h"
   6 #include "diff.h"
   7 #include "revision.h"
   8 #include "diffcore.h"
   9 #include "quote.h"
  10 #include "run-command.h"
  11 #include "remote.h"
  12 #include "refs.h"
  13 #include "submodule.h"
  14 #include "column.h"
  15 #include "strbuf.h"
  16
  17 static char default_wt_status_colors[][COLOR_MAXLEN] = {
  18         GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
  19         GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
  20         GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
  21         GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
  22         GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
  23         GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
  24         GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
  25         GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
  26         GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
  27 };
  28
  29 static const char *color(int slot, struct wt_status *s)
  30 {
  31         const char *c = "";
  32         if (want_color(s->use_color))
  33                 c = s->color_palette[slot];
  34         if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
  35                 c = s->color_palette[WT_STATUS_HEADER];
  36         return c;
  37 }
  38
  39 static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
  40                 const char *fmt, va_list ap, const char *trail)
  41 {
  42         struct strbuf sb = STRBUF_INIT;
  43         struct strbuf linebuf = STRBUF_INIT;
  44         const char *line, *eol;
  45
  46         strbuf_vaddf(&sb, fmt, ap);
  47         if (!sb.len) {
  48                 strbuf_addch(&sb, '#');
  49                 if (!trail)
  50                         strbuf_addch(&sb, ' ');
  51                 color_print_strbuf(s->fp, color, &sb);
  52                 if (trail)
  53                         fprintf(s->fp, "%s", trail);
  54                 strbuf_release(&sb);
  55                 return;
  56         }
  57         for (line = sb.buf; *line; line = eol + 1) {
  58                 eol = strchr(line, '\n');
  59
  60                 strbuf_reset(&linebuf);
  61                 if (at_bol) {
  62                         strbuf_addch(&linebuf, '#');
  63                         if (*line != '\n' && *line != '\t')
  64                                 strbuf_addch(&linebuf, ' ');
  65                 }
  66                 if (eol)
  67                         strbuf_add(&linebuf, line, eol - line);
  68                 else
  69                         strbuf_addstr(&linebuf, line);
  70                 color_print_strbuf(s->fp, color, &linebuf);
  71                 if (eol)
  72                         fprintf(s->fp, "\n");
  73                 else
  74                         break;
  75                 at_bol = 1;
  76         }
  77         if (trail)
  78                 fprintf(s->fp, "%s", trail);
  79         strbuf_release(&linebuf);
  80         strbuf_release(&sb);
  81 }
  82
  83 void status_printf_ln(struct wt_status *s, const char *color,
  84                         const char *fmt, ...)
  85 {
  86         va_list ap;
  87
  88         va_start(ap, fmt);
  89         status_vprintf(s, 1, color, fmt, ap, "\n");
  90         va_end(ap);
  91 }
  92
  93 void status_printf(struct wt_status *s, const char *color,
  94                         const char *fmt, ...)
  95 {
  96         va_list ap;
  97
  98         va_start(ap, fmt);
  99         status_vprintf(s, 1, color, fmt, ap, NULL);
 100         va_end(ap);
 101 }
 102
 103 static void status_printf_more(struct wt_status *s, const char *color,
 104                                const char *fmt, ...)
 105 {
 106         va_list ap;
 107
 108         va_start(ap, fmt);
 109         status_vprintf(s, 0, color, fmt, ap, NULL);
 110         va_end(ap);
 111 }
 112
 113 void wt_status_prepare(struct wt_status *s)
 114 {
 115         unsigned char sha1[20];
 116
 117         memset(s, 0, sizeof(*s));
 118         memcpy(s->color_palette, default_wt_status_colors,
 119                sizeof(default_wt_status_colors));
 120         s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 121         s->use_color = -1;
 122         s->relative_paths = 1;
 123         s->branch = resolve_refdup("HEAD", sha1, 0, NULL);
 124         s->reference = "HEAD";
 125         s->fp = stdout;
 126         s->index_file = get_index_file();
 127         s->change.strdup_strings = 1;
 128         s->untracked.strdup_strings = 1;
 129         s->ignored.strdup_strings = 1;
 130 }
 131
 132 static void wt_status_print_unmerged_header(struct wt_status *s)
 133 {
 134         int i;
 135         int del_mod_conflict = 0;
 136         int both_deleted = 0;
 137         int not_deleted = 0;
 138         const char *c = color(WT_STATUS_HEADER, s);
 139
 140         status_printf_ln(s, c, _("Unmerged paths:"));
 141
 142         for (i = 0; i < s->change.nr; i++) {
 143                 struct string_list_item *it = &(s->change.items[i]);
 144                 struct wt_status_change_data *d = it->util;
 145
 146                 switch (d->stagemask) {
 147                 case 0:
 148                         break;
 149                 case 1:
 150                         both_deleted = 1;
 151                         break;
 152                 case 3:
 153                 case 5:
 154                         del_mod_conflict = 1;
 155                         break;
 156                 default:
 157                         not_deleted = 1;
 158                         break;
 159                 }
 160         }
 161
 162         if (!advice_status_hints)
 163                 return;
 164         if (s->whence != FROM_COMMIT)
 165                 ;
 166         else if (!s->is_initial)
 167                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 168         else
 169                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 170
 171         if (!both_deleted) {
 172                 if (!del_mod_conflict)
 173                         status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
 174                 else
 175                         status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 176         } else if (!del_mod_conflict && !not_deleted) {
 177                 status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
 178         } else {
 179                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 180         }
 181         status_printf_ln(s, c, "");
 182 }
 183
 184 static void wt_status_print_cached_header(struct wt_status *s)
 185 {
 186         const char *c = color(WT_STATUS_HEADER, s);
 187
 188         status_printf_ln(s, c, _("Changes to be committed:"));
 189         if (!advice_status_hints)
 190                 return;
 191         if (s->whence != FROM_COMMIT)
 192                 ; /* NEEDSWORK: use "git reset --unresolve"??? */
 193         else if (!s->is_initial)
 194                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 195         else
 196                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 197         status_printf_ln(s, c, "");
 198 }
 199
 200 static void wt_status_print_dirty_header(struct wt_status *s,
 201                                          int has_deleted,
 202                                          int has_dirty_submodules)
 203 {
 204         const char *c = color(WT_STATUS_HEADER, s);
 205
 206         status_printf_ln(s, c, _("Changes not staged for commit:"));
 207         if (!advice_status_hints)
 208                 return;
 209         if (!has_deleted)
 210                 status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
 211         else
 212                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
 213         status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
 214         if (has_dirty_submodules)
 215                 status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
 216         status_printf_ln(s, c, "");
 217 }
 218
 219 static void wt_status_print_other_header(struct wt_status *s,
 220                                          const char *what,
 221                                          const char *how)
 222 {
 223         const char *c = color(WT_STATUS_HEADER, s);
 224         status_printf_ln(s, c, "%s:", what);
 225         if (!advice_status_hints)
 226                 return;
 227         status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
 228         status_printf_ln(s, c, "");
 229 }
 230
 231 static void wt_status_print_trailer(struct wt_status *s)
 232 {
 233         status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
 234 }
 235
 236 #define quote_path quote_path_relative
 237
 238 static void wt_status_print_unmerged_data(struct wt_status *s,
 239                                           struct string_list_item *it)
 240 {
 241         const char *c = color(WT_STATUS_UNMERGED, s);
 242         struct wt_status_change_data *d = it->util;
 243         struct strbuf onebuf = STRBUF_INIT;
 244         const char *one, *how = _("bug");
 245
 246         one = quote_path(it->string, -1, &onebuf, s->prefix);
 247         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 248         switch (d->stagemask) {
 249         case 1: how = _("both deleted:"); break;
 250         case 2: how = _("added by us:"); break;
 251         case 3: how = _("deleted by them:"); break;
 252         case 4: how = _("added by them:"); break;
 253         case 5: how = _("deleted by us:"); break;
 254         case 6: how = _("both added:"); break;
 255         case 7: how = _("both modified:"); break;
 256         }
 257         status_printf_more(s, c, "%-20s%s\n", how, one);
 258         strbuf_release(&onebuf);
 259 }
 260
 261 static void wt_status_print_change_data(struct wt_status *s,
 262                                         int change_type,
 263                                         struct string_list_item *it)
 264 {
 265         struct wt_status_change_data *d = it->util;
 266         const char *c = color(change_type, s);
 267         int status = status;
 268         char *one_name;
 269         char *two_name;
 270         const char *one, *two;
 271         struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
 272         struct strbuf extra = STRBUF_INIT;
 273
 274         one_name = two_name = it->string;
 275         switch (change_type) {
 276         case WT_STATUS_UPDATED:
 277                 status = d->index_status;
 278                 if (d->head_path)
 279                         one_name = d->head_path;
 280                 break;
 281         case WT_STATUS_CHANGED:
 282                 if (d->new_submodule_commits || d->dirty_submodule) {
 283                         strbuf_addstr(&extra, " (");
 284                         if (d->new_submodule_commits)
 285                                 strbuf_addf(&extra, _("new commits, "));
 286                         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 287                                 strbuf_addf(&extra, _("modified content, "));
 288                         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 289                                 strbuf_addf(&extra, _("untracked content, "));
 290                         strbuf_setlen(&extra, extra.len - 2);
 291                         strbuf_addch(&extra, ')');
 292                 }
 293                 status = d->worktree_status;
 294                 break;
 295         }
 296
 297         one = quote_path(one_name, -1, &onebuf, s->prefix);
 298         two = quote_path(two_name, -1, &twobuf, s->prefix);
 299
 300         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 301         switch (status) {
 302         case DIFF_STATUS_ADDED:
 303                 status_printf_more(s, c, _("new file:   %s"), one);
 304                 break;
 305         case DIFF_STATUS_COPIED:
 306                 status_printf_more(s, c, _("copied:     %s -> %s"), one, two);
 307                 break;
 308         case DIFF_STATUS_DELETED:
 309                 status_printf_more(s, c, _("deleted:    %s"), one);
 310                 break;
 311         case DIFF_STATUS_MODIFIED:
 312                 status_printf_more(s, c, _("modified:   %s"), one);
 313                 break;
 314         case DIFF_STATUS_RENAMED:
 315                 status_printf_more(s, c, _("renamed:    %s -> %s"), one, two);
 316                 break;
 317         case DIFF_STATUS_TYPE_CHANGED:
 318                 status_printf_more(s, c, _("typechange: %s"), one);
 319                 break;
 320         case DIFF_STATUS_UNKNOWN:
 321                 status_printf_more(s, c, _("unknown:    %s"), one);
 322                 break;
 323         case DIFF_STATUS_UNMERGED:
 324                 status_printf_more(s, c, _("unmerged:   %s"), one);
 325                 break;
 326         default:
 327                 die(_("bug: unhandled diff status %c"), status);
 328         }
 329         if (extra.len) {
 330                 status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 331                 strbuf_release(&extra);
 332         }
 333         status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 334         strbuf_release(&onebuf);
 335         strbuf_release(&twobuf);
 336 }
 337
 338 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 339                                          struct diff_options *options,
 340                                          void *data)
 341 {
 342         struct wt_status *s = data;
 343         int i;
 344
 345         if (!q->nr)
 346                 return;
 347         s->workdir_dirty = 1;
 348         for (i = 0; i < q->nr; i++) {
 349                 struct diff_filepair *p;
 350                 struct string_list_item *it;
 351                 struct wt_status_change_data *d;
 352
 353                 p = q->queue[i];
 354                 it = string_list_insert(&s->change, p->one->path);
 355                 d = it->util;
 356                 if (!d) {
 357                         d = xcalloc(1, sizeof(*d));
 358                         it->util = d;
 359                 }
 360                 if (!d->worktree_status)
 361                         d->worktree_status = p->status;
 362                 d->dirty_submodule = p->two->dirty_submodule;
 363                 if (S_ISGITLINK(p->two->mode))
 364                         d->new_submodule_commits = !!hashcmp(p->one->sha1, p->two->sha1);
 365         }
 366 }
 367
 368 static int unmerged_mask(const char *path)
 369 {
 370         int pos, mask;
 371         struct cache_entry *ce;
 372
 373         pos = cache_name_pos(path, strlen(path));
 374         if (0 <= pos)
 375                 return 0;
 376
 377         mask = 0;
 378         pos = -pos-1;
 379         while (pos < active_nr) {
 380                 ce = active_cache[pos++];
 381                 if (strcmp(ce->name, path) || !ce_stage(ce))
 382                         break;
 383                 mask |= (1 << (ce_stage(ce) - 1));
 384         }
 385         return mask;
 386 }
 387
 388 static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 389                                          struct diff_options *options,
 390                                          void *data)
 391 {
 392         struct wt_status *s = data;
 393         int i;
 394
 395         for (i = 0; i < q->nr; i++) {
 396                 struct diff_filepair *p;
 397                 struct string_list_item *it;
 398                 struct wt_status_change_data *d;
 399
 400                 p = q->queue[i];
 401                 it = string_list_insert(&s->change, p->two->path);
 402                 d = it->util;
 403                 if (!d) {
 404                         d = xcalloc(1, sizeof(*d));
 405                         it->util = d;
 406                 }
 407                 if (!d->index_status)
 408                         d->index_status = p->status;
 409                 switch (p->status) {
 410                 case DIFF_STATUS_COPIED:
 411                 case DIFF_STATUS_RENAMED:
 412                         d->head_path = xstrdup(p->one->path);
 413                         break;
 414                 case DIFF_STATUS_UNMERGED:
 415                         d->stagemask = unmerged_mask(p->two->path);
 416                         break;
 417                 }
 418         }
 419 }
 420
 421 static void wt_status_collect_changes_worktree(struct wt_status *s)
 422 {
 423         struct rev_info rev;
 424
 425         init_revisions(&rev, NULL);
 426         setup_revisions(0, NULL, &rev, NULL);
 427         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 428         DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
 429         if (!s->show_untracked_files)
 430                 DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
 431         if (s->ignore_submodule_arg) {
 432                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 433                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 434         }
 435         rev.diffopt.format_callback = wt_status_collect_changed_cb;
 436         rev.diffopt.format_callback_data = s;
 437         init_pathspec(&rev.prune_data, s->pathspec);
 438         run_diff_files(&rev, 0);
 439 }
 440
 441 static void wt_status_collect_changes_index(struct wt_status *s)
 442 {
 443         struct rev_info rev;
 444         struct setup_revision_opt opt;
 445
 446         init_revisions(&rev, NULL);
 447         memset(&opt, 0, sizeof(opt));
 448         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 449         setup_revisions(0, NULL, &rev, &opt);
 450
 451         if (s->ignore_submodule_arg) {
 452                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 453                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 454         }
 455
 456         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 457         rev.diffopt.format_callback = wt_status_collect_updated_cb;
 458         rev.diffopt.format_callback_data = s;
 459         rev.diffopt.detect_rename = 1;
 460         rev.diffopt.rename_limit = 200;
 461         rev.diffopt.break_opt = 0;
 462         init_pathspec(&rev.prune_data, s->pathspec);
 463         run_diff_index(&rev, 1);
 464 }
 465
 466 static void wt_status_collect_changes_initial(struct wt_status *s)
 467 {
 468         struct pathspec pathspec;
 469         int i;
 470
 471         init_pathspec(&pathspec, s->pathspec);
 472         for (i = 0; i < active_nr; i++) {
 473                 struct string_list_item *it;
 474                 struct wt_status_change_data *d;
 475                 struct cache_entry *ce = active_cache[i];
 476
 477                 if (!ce_path_match(ce, &pathspec))
 478                         continue;
 479                 it = string_list_insert(&s->change, ce->name);
 480                 d = it->util;
 481                 if (!d) {
 482                         d = xcalloc(1, sizeof(*d));
 483                         it->util = d;
 484                 }
 485                 if (ce_stage(ce)) {
 486                         d->index_status = DIFF_STATUS_UNMERGED;
 487                         d->stagemask |= (1 << (ce_stage(ce) - 1));
 488                 }
 489                 else
 490                         d->index_status = DIFF_STATUS_ADDED;
 491         }
 492         free_pathspec(&pathspec);
 493 }
 494
 495 static void wt_status_collect_untracked(struct wt_status *s)
 496 {
 497         int i;
 498         struct dir_struct dir;
 499
 500         if (!s->show_untracked_files)
 501                 return;
 502         memset(&dir, 0, sizeof(dir));
 503         if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 504                 dir.flags |=
 505                         DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 506         setup_standard_excludes(&dir);
 507
 508         fill_directory(&dir, s->pathspec);
 509         for (i = 0; i < dir.nr; i++) {
 510                 struct dir_entry *ent = dir.entries[i];
 511                 if (cache_name_is_other(ent->name, ent->len) &&
 512                     match_pathspec(s->pathspec, ent->name, ent->len, 0, NULL))
 513                         string_list_insert(&s->untracked, ent->name);
 514                 free(ent);
 515         }
 516
 517         if (s->show_ignored_files) {
 518                 dir.nr = 0;
 519                 dir.flags = DIR_SHOW_IGNORED;
 520                 if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 521                         dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
 522                 fill_directory(&dir, s->pathspec);
 523                 for (i = 0; i < dir.nr; i++) {
 524                         struct dir_entry *ent = dir.entries[i];
 525                         if (cache_name_is_other(ent->name, ent->len) &&
 526                             match_pathspec(s->pathspec, ent->name, ent->len, 0, NULL))
 527                                 string_list_insert(&s->ignored, ent->name);
 528                         free(ent);
 529                 }
 530         }
 531
 532         free(dir.entries);
 533 }
 534
 535 void wt_status_collect(struct wt_status *s)
 536 {
 537         wt_status_collect_changes_worktree(s);
 538
 539         if (s->is_initial)
 540                 wt_status_collect_changes_initial(s);
 541         else
 542                 wt_status_collect_changes_index(s);
 543         wt_status_collect_untracked(s);
 544 }
 545
 546 static void wt_status_print_unmerged(struct wt_status *s)
 547 {
 548         int shown_header = 0;
 549         int i;
 550
 551         for (i = 0; i < s->change.nr; i++) {
 552                 struct wt_status_change_data *d;
 553                 struct string_list_item *it;
 554                 it = &(s->change.items[i]);
 555                 d = it->util;
 556                 if (!d->stagemask)
 557                         continue;
 558                 if (!shown_header) {
 559                         wt_status_print_unmerged_header(s);
 560                         shown_header = 1;
 561                 }
 562                 wt_status_print_unmerged_data(s, it);
 563         }
 564         if (shown_header)
 565                 wt_status_print_trailer(s);
 566
 567 }
 568
 569 static void wt_status_print_updated(struct wt_status *s)
 570 {
 571         int shown_header = 0;
 572         int i;
 573
 574         for (i = 0; i < s->change.nr; i++) {
 575                 struct wt_status_change_data *d;
 576                 struct string_list_item *it;
 577                 it = &(s->change.items[i]);
 578                 d = it->util;
 579                 if (!d->index_status ||
 580                     d->index_status == DIFF_STATUS_UNMERGED)
 581                         continue;
 582                 if (!shown_header) {
 583                         wt_status_print_cached_header(s);
 584                         s->commitable = 1;
 585                         shown_header = 1;
 586                 }
 587                 wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
 588         }
 589         if (shown_header)
 590                 wt_status_print_trailer(s);
 591 }
 592
 593 /*
 594  * -1 : has delete
 595  *  0 : no change
 596  *  1 : some change but no delete
 597  */
 598 static int wt_status_check_worktree_changes(struct wt_status *s,
 599                                              int *dirty_submodules)
 600 {
 601         int i;
 602         int changes = 0;
 603
 604         *dirty_submodules = 0;
 605
 606         for (i = 0; i < s->change.nr; i++) {
 607                 struct wt_status_change_data *d;
 608                 d = s->change.items[i].util;
 609                 if (!d->worktree_status ||
 610                     d->worktree_status == DIFF_STATUS_UNMERGED)
 611                         continue;
 612                 if (!changes)
 613                         changes = 1;
 614                 if (d->dirty_submodule)
 615                         *dirty_submodules = 1;
 616                 if (d->worktree_status == DIFF_STATUS_DELETED)
 617                         changes = -1;
 618         }
 619         return changes;
 620 }
 621
 622 static void wt_status_print_changed(struct wt_status *s)
 623 {
 624         int i, dirty_submodules;
 625         int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 626
 627         if (!worktree_changes)
 628                 return;
 629
 630         wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 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->worktree_status ||
 638                     d->worktree_status == DIFF_STATUS_UNMERGED)
 639                         continue;
 640                 wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
 641         }
 642         wt_status_print_trailer(s);
 643 }
 644
 645 static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
 646 {
 647         struct child_process sm_summary;
 648         char summary_limit[64];
 649         char index[PATH_MAX];
 650         const char *env[] = { NULL, NULL };
 651         const char *argv[8];
 652
 653         env[0] =        index;
 654         argv[0] =       "submodule";
 655         argv[1] =       "summary";
 656         argv[2] =       uncommitted ? "--files" : "--cached";
 657         argv[3] =       "--for-status";
 658         argv[4] =       "--summary-limit";
 659         argv[5] =       summary_limit;
 660         argv[6] =       uncommitted ? NULL : (s->amend ? "HEAD^" : "HEAD");
 661         argv[7] =       NULL;
 662
 663         sprintf(summary_limit, "%d", s->submodule_summary);
 664         snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", s->index_file);
 665
 666         memset(&sm_summary, 0, sizeof(sm_summary));
 667         sm_summary.argv = argv;
 668         sm_summary.env = env;
 669         sm_summary.git_cmd = 1;
 670         sm_summary.no_stdin = 1;
 671         fflush(s->fp);
 672         sm_summary.out = dup(fileno(s->fp));    /* run_command closes it */
 673         run_command(&sm_summary);
 674 }
 675
 676 static void wt_status_print_other(struct wt_status *s,
 677                                   struct string_list *l,
 678                                   const char *what,
 679                                   const char *how)
 680 {
 681         int i;
 682         struct strbuf buf = STRBUF_INIT;
 683         static struct string_list output = STRING_LIST_INIT_DUP;
 684         struct column_options copts;
 685
 686         if (!l->nr)
 687                 return;
 688
 689         wt_status_print_other_header(s, what, how);
 690
 691         for (i = 0; i < l->nr; i++) {
 692                 struct string_list_item *it;
 693                 const char *path;
 694                 it = &(l->items[i]);
 695                 path = quote_path(it->string, strlen(it->string),
 696                                   &buf, s->prefix);
 697                 if (column_active(s->colopts)) {
 698                         string_list_append(&output, path);
 699                         continue;
 700                 }
 701                 status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 702                 status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 703                                    "%s\n", path);
 704         }
 705
 706         strbuf_release(&buf);
 707         if (!column_active(s->colopts))
 708                 return;
 709
 710         strbuf_addf(&buf, "%s#\t%s",
 711                     color(WT_STATUS_HEADER, s),
 712                     color(WT_STATUS_UNTRACKED, s));
 713         memset(&copts, 0, sizeof(copts));
 714         copts.padding = 1;
 715         copts.indent = buf.buf;
 716         if (want_color(s->use_color))
 717                 copts.nl = GIT_COLOR_RESET "\n";
 718         print_columns(&output, s->colopts, &copts);
 719         string_list_clear(&output, 0);
 720         strbuf_release(&buf);
 721 }
 722
 723 static void wt_status_print_verbose(struct wt_status *s)
 724 {
 725         struct rev_info rev;
 726         struct setup_revision_opt opt;
 727
 728         init_revisions(&rev, NULL);
 729         DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
 730
 731         memset(&opt, 0, sizeof(opt));
 732         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 733         setup_revisions(0, NULL, &rev, &opt);
 734
 735         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 736         rev.diffopt.detect_rename = 1;
 737         rev.diffopt.file = s->fp;
 738         rev.diffopt.close_file = 0;
 739         /*
 740          * If we're not going to stdout, then we definitely don't
 741          * want color, since we are going to the commit message
 742          * file (and even the "auto" setting won't work, since it
 743          * will have checked isatty on stdout).
 744          */
 745         if (s->fp != stdout)
 746                 rev.diffopt.use_color = 0;
 747         run_diff_index(&rev, 1);
 748 }
 749
 750 static void wt_status_print_tracking(struct wt_status *s)
 751 {
 752         struct strbuf sb = STRBUF_INIT;
 753         const char *cp, *ep;
 754         struct branch *branch;
 755
 756         assert(s->branch && !s->is_initial);
 757         if (prefixcmp(s->branch, "refs/heads/"))
 758                 return;
 759         branch = branch_get(s->branch + 11);
 760         if (!format_tracking_info(branch, &sb))
 761                 return;
 762
 763         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
 764                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
 765                                  "# %.*s", (int)(ep - cp), cp);
 766         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
 767 }
 768
 769 static int has_unmerged(struct wt_status *s)
 770 {
 771         int i;
 772
 773         for (i = 0; i < s->change.nr; i++) {
 774                 struct wt_status_change_data *d;
 775                 d = s->change.items[i].util;
 776                 if (d->stagemask)
 777                         return 1;
 778         }
 779         return 0;
 780 }
 781
 782 static void show_merge_in_progress(struct wt_status *s,
 783                                 struct wt_status_state *state,
 784                                 const char *color)
 785 {
 786         if (has_unmerged(s)) {
 787                 status_printf_ln(s, color, _("You have unmerged paths."));
 788                 if (advice_status_hints)
 789                         status_printf_ln(s, color,
 790                                 _("  (fix conflicts and run \"git commit\")"));
 791         } else {
 792                 status_printf_ln(s, color,
 793                         _("All conflicts fixed but you are still merging."));
 794                 if (advice_status_hints)
 795                         status_printf_ln(s, color,
 796                                 _("  (use \"git commit\" to conclude merge)"));
 797         }
 798         wt_status_print_trailer(s);
 799 }
 800
 801 static void show_am_in_progress(struct wt_status *s,
 802                                 struct wt_status_state *state,
 803                                 const char *color)
 804 {
 805         status_printf_ln(s, color,
 806                 _("You are in the middle of an am session."));
 807         if (state->am_empty_patch)
 808                 status_printf_ln(s, color,
 809                         _("The current patch is empty."));
 810         if (advice_status_hints) {
 811                 if (!state->am_empty_patch)
 812                         status_printf_ln(s, color,
 813                                 _("  (fix conflicts and then run \"git am --resolved\")"));
 814                 status_printf_ln(s, color,
 815                         _("  (use \"git am --skip\" to skip this patch)"));
 816                 status_printf_ln(s, color,
 817                         _("  (use \"git am --abort\" to restore the original branch)"));
 818         }
 819         wt_status_print_trailer(s);
 820 }
 821
 822 static char *read_line_from_git_path(const char *filename)
 823 {
 824         struct strbuf buf = STRBUF_INIT;
 825         FILE *fp = fopen(git_path("%s", filename), "r");
 826         if (!fp) {
 827                 strbuf_release(&buf);
 828                 return NULL;
 829         }
 830         strbuf_getline(&buf, fp, '\n');
 831         if (!fclose(fp)) {
 832                 return strbuf_detach(&buf, NULL);
 833         } else {
 834                 strbuf_release(&buf);
 835                 return NULL;
 836         }
 837 }
 838
 839 static int split_commit_in_progress(struct wt_status *s)
 840 {
 841         int split_in_progress = 0;
 842         char *head = read_line_from_git_path("HEAD");
 843         char *orig_head = read_line_from_git_path("ORIG_HEAD");
 844         char *rebase_amend = read_line_from_git_path("rebase-merge/amend");
 845         char *rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
 846
 847         if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
 848             !s->branch || strcmp(s->branch, "HEAD"))
 849                 return split_in_progress;
 850
 851         if (!strcmp(rebase_amend, rebase_orig_head)) {
 852                 if (strcmp(head, rebase_amend))
 853                         split_in_progress = 1;
 854         } else if (strcmp(orig_head, rebase_orig_head)) {
 855                 split_in_progress = 1;
 856         }
 857
 858         if (!s->amend && !s->nowarn && !s->workdir_dirty)
 859                 split_in_progress = 0;
 860
 861         free(head);
 862         free(orig_head);
 863         free(rebase_amend);
 864         free(rebase_orig_head);
 865         return split_in_progress;
 866 }
 867
 868 static void show_rebase_in_progress(struct wt_status *s,
 869                                 struct wt_status_state *state,
 870                                 const char *color)
 871 {
 872         struct stat st;
 873
 874         if (has_unmerged(s)) {
 875                 status_printf_ln(s, color, _("You are currently rebasing."));
 876                 if (advice_status_hints) {
 877                         status_printf_ln(s, color,
 878                                 _("  (fix conflicts and then run \"git rebase --continue\")"));
 879                         status_printf_ln(s, color,
 880                                 _("  (use \"git rebase --skip\" to skip this patch)"));
 881                         status_printf_ln(s, color,
 882                                 _("  (use \"git rebase --abort\" to check out the original branch)"));
 883                 }
 884         } else if (state->rebase_in_progress || !stat(git_path("MERGE_MSG"), &st)) {
 885                 status_printf_ln(s, color, _("You are currently rebasing."));
 886                 if (advice_status_hints)
 887                         status_printf_ln(s, color,
 888                                 _("  (all conflicts fixed: run \"git rebase --continue\")"));
 889         } else if (split_commit_in_progress(s)) {
 890                 status_printf_ln(s, color, _("You are currently splitting a commit during a rebase."));
 891                 if (advice_status_hints)
 892                         status_printf_ln(s, color,
 893                                 _("  (Once your working directory is clean, run \"git rebase --continue\")"));
 894         } else {
 895                 status_printf_ln(s, color, _("You are currently editing a commit during a rebase."));
 896                 if (advice_status_hints && !s->amend) {
 897                         status_printf_ln(s, color,
 898                                 _("  (use \"git commit --amend\" to amend the current commit)"));
 899                         status_printf_ln(s, color,
 900                                 _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
 901                 }
 902         }
 903         wt_status_print_trailer(s);
 904 }
 905
 906 static void show_cherry_pick_in_progress(struct wt_status *s,
 907                                         struct wt_status_state *state,
 908                                         const char *color)
 909 {
 910         status_printf_ln(s, color, _("You are currently cherry-picking."));
 911         if (advice_status_hints) {
 912                 if (has_unmerged(s))
 913                         status_printf_ln(s, color,
 914                                 _("  (fix conflicts and run \"git commit\")"));
 915                 else
 916                         status_printf_ln(s, color,
 917                                 _("  (all conflicts fixed: run \"git commit\")"));
 918         }
 919         wt_status_print_trailer(s);
 920 }
 921
 922 static void show_bisect_in_progress(struct wt_status *s,
 923                                 struct wt_status_state *state,
 924                                 const char *color)
 925 {
 926         status_printf_ln(s, color, _("You are currently bisecting."));
 927         if (advice_status_hints)
 928                 status_printf_ln(s, color,
 929                         _("  (use \"git bisect reset\" to get back to the original branch)"));
 930         wt_status_print_trailer(s);
 931 }
 932
 933 static void wt_status_print_state(struct wt_status *s)
 934 {
 935         const char *state_color = color(WT_STATUS_HEADER, s);
 936         struct wt_status_state state;
 937         struct stat st;
 938
 939         memset(&state, 0, sizeof(state));
 940
 941         if (!stat(git_path("MERGE_HEAD"), &st)) {
 942                 state.merge_in_progress = 1;
 943         } else if (!stat(git_path("rebase-apply"), &st)) {
 944                 if (!stat(git_path("rebase-apply/applying"), &st)) {
 945                         state.am_in_progress = 1;
 946                         if (!stat(git_path("rebase-apply/patch"), &st) && !st.st_size)
 947                                 state.am_empty_patch = 1;
 948                 } else {
 949                         state.rebase_in_progress = 1;
 950                 }
 951         } else if (!stat(git_path("rebase-merge"), &st)) {
 952                 if (!stat(git_path("rebase-merge/interactive"), &st))
 953                         state.rebase_interactive_in_progress = 1;
 954                 else
 955                         state.rebase_in_progress = 1;
 956         } else if (!stat(git_path("CHERRY_PICK_HEAD"), &st)) {
 957                 state.cherry_pick_in_progress = 1;
 958         }
 959         if (!stat(git_path("BISECT_LOG"), &st))
 960                 state.bisect_in_progress = 1;
 961
 962         if (state.merge_in_progress)
 963                 show_merge_in_progress(s, &state, state_color);
 964         else if (state.am_in_progress)
 965                 show_am_in_progress(s, &state, state_color);
 966         else if (state.rebase_in_progress || state.rebase_interactive_in_progress)
 967                 show_rebase_in_progress(s, &state, state_color);
 968         else if (state.cherry_pick_in_progress)
 969                 show_cherry_pick_in_progress(s, &state, state_color);
 970         if (state.bisect_in_progress)
 971                 show_bisect_in_progress(s, &state, state_color);
 972 }
 973
 974 void wt_status_print(struct wt_status *s)
 975 {
 976         const char *branch_color = color(WT_STATUS_ONBRANCH, s);
 977         const char *branch_status_color = color(WT_STATUS_HEADER, s);
 978
 979         if (s->branch) {
 980                 const char *on_what = _("On branch ");
 981                 const char *branch_name = s->branch;
 982                 if (!prefixcmp(branch_name, "refs/heads/"))
 983                         branch_name += 11;
 984                 else if (!strcmp(branch_name, "HEAD")) {
 985                         branch_name = "";
 986                         branch_status_color = color(WT_STATUS_NOBRANCH, s);
 987                         on_what = _("Not currently on any branch.");
 988                 }
 989                 status_printf(s, color(WT_STATUS_HEADER, s), "");
 990                 status_printf_more(s, branch_status_color, "%s", on_what);
 991                 status_printf_more(s, branch_color, "%s\n", branch_name);
 992                 if (!s->is_initial)
 993                         wt_status_print_tracking(s);
 994         }
 995
 996         wt_status_print_state(s);
 997         if (s->is_initial) {
 998                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
 999                 status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
1000                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
1001         }
1002
1003         wt_status_print_updated(s);
1004         wt_status_print_unmerged(s);
1005         wt_status_print_changed(s);
1006         if (s->submodule_summary &&
1007             (!s->ignore_submodule_arg ||
1008              strcmp(s->ignore_submodule_arg, "all"))) {
1009                 wt_status_print_submodule_summary(s, 0);  /* staged */
1010                 wt_status_print_submodule_summary(s, 1);  /* unstaged */
1011         }
1012         if (s->show_untracked_files) {
1013                 wt_status_print_other(s, &s->untracked, _("Untracked files"), "add");
1014                 if (s->show_ignored_files)
1015                         wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1016         } else if (s->commitable)
1017                 status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1018                         advice_status_hints
1019                         ? _(" (use -u option to show untracked files)") : "");
1020
1021         if (s->verbose)
1022                 wt_status_print_verbose(s);
1023         if (!s->commitable) {
1024                 if (s->amend)
1025                         status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1026                 else if (s->nowarn)
1027                         ; /* nothing */
1028                 else if (s->workdir_dirty) {
1029                         if (advice_status_hints)
1030                                 printf(_("no changes added to commit "
1031                                          "(use \"git add\" and/or \"git commit -a\")\n"));
1032                         else
1033                                 printf(_("no changes added to commit\n"));
1034                 } else if (s->untracked.nr) {
1035                         if (advice_status_hints)
1036                                 printf(_("nothing added to commit but untracked files "
1037                                          "present (use \"git add\" to track)\n"));
1038                         else
1039                                 printf(_("nothing added to commit but untracked files present\n"));
1040                 } else if (s->is_initial) {
1041                         if (advice_status_hints)
1042                                 printf(_("nothing to commit (create/copy files "
1043                                          "and use \"git add\" to track)\n"));
1044                         else
1045                                 printf(_("nothing to commit\n"));
1046                 } else if (!s->show_untracked_files) {
1047                         if (advice_status_hints)
1048                                 printf(_("nothing to commit (use -u to show untracked files)\n"));
1049                         else
1050                                 printf(_("nothing to commit\n"));
1051                 } else
1052                         printf(_("nothing to commit, working directory clean\n"));
1053         }
1054 }
1055
1056 static void wt_shortstatus_unmerged(struct string_list_item *it,
1057                            struct wt_status *s)
1058 {
1059         struct wt_status_change_data *d = it->util;
1060         const char *how = "??";
1061
1062         switch (d->stagemask) {
1063         case 1: how = "DD"; break; /* both deleted */
1064         case 2: how = "AU"; break; /* added by us */
1065         case 3: how = "UD"; break; /* deleted by them */
1066         case 4: how = "UA"; break; /* added by them */
1067         case 5: how = "DU"; break; /* deleted by us */
1068         case 6: how = "AA"; break; /* both added */
1069         case 7: how = "UU"; break; /* both modified */
1070         }
1071         color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1072         if (s->null_termination) {
1073                 fprintf(stdout, " %s%c", it->string, 0);
1074         } else {
1075                 struct strbuf onebuf = STRBUF_INIT;
1076                 const char *one;
1077                 one = quote_path(it->string, -1, &onebuf, s->prefix);
1078                 printf(" %s\n", one);
1079                 strbuf_release(&onebuf);
1080         }
1081 }
1082
1083 static void wt_shortstatus_status(struct string_list_item *it,
1084                          struct wt_status *s)
1085 {
1086         struct wt_status_change_data *d = it->util;
1087
1088         if (d->index_status)
1089                 color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1090         else
1091                 putchar(' ');
1092         if (d->worktree_status)
1093                 color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1094         else
1095                 putchar(' ');
1096         putchar(' ');
1097         if (s->null_termination) {
1098                 fprintf(stdout, "%s%c", it->string, 0);
1099                 if (d->head_path)
1100                         fprintf(stdout, "%s%c", d->head_path, 0);
1101         } else {
1102                 struct strbuf onebuf = STRBUF_INIT;
1103                 const char *one;
1104                 if (d->head_path) {
1105                         one = quote_path(d->head_path, -1, &onebuf, s->prefix);
1106                         if (*one != '"' && strchr(one, ' ') != NULL) {
1107                                 putchar('"');
1108                                 strbuf_addch(&onebuf, '"');
1109                                 one = onebuf.buf;
1110                         }
1111                         printf("%s -> ", one);
1112                         strbuf_release(&onebuf);
1113                 }
1114                 one = quote_path(it->string, -1, &onebuf, s->prefix);
1115                 if (*one != '"' && strchr(one, ' ') != NULL) {
1116                         putchar('"');
1117                         strbuf_addch(&onebuf, '"');
1118                         one = onebuf.buf;
1119                 }
1120                 printf("%s\n", one);
1121                 strbuf_release(&onebuf);
1122         }
1123 }
1124
1125 static void wt_shortstatus_other(struct string_list_item *it,
1126                                  struct wt_status *s, const char *sign)
1127 {
1128         if (s->null_termination) {
1129                 fprintf(stdout, "%s %s%c", sign, it->string, 0);
1130         } else {
1131                 struct strbuf onebuf = STRBUF_INIT;
1132                 const char *one;
1133                 one = quote_path(it->string, -1, &onebuf, s->prefix);
1134                 color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1135                 printf(" %s\n", one);
1136                 strbuf_release(&onebuf);
1137         }
1138 }
1139
1140 static void wt_shortstatus_print_tracking(struct wt_status *s)
1141 {
1142         struct branch *branch;
1143         const char *header_color = color(WT_STATUS_HEADER, s);
1144         const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1145         const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1146
1147         const char *base;
1148         const char *branch_name;
1149         int num_ours, num_theirs;
1150
1151         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1152
1153         if (!s->branch)
1154                 return;
1155         branch_name = s->branch;
1156
1157         if (!prefixcmp(branch_name, "refs/heads/"))
1158                 branch_name += 11;
1159         else if (!strcmp(branch_name, "HEAD")) {
1160                 branch_name = _("HEAD (no branch)");
1161                 branch_color_local = color(WT_STATUS_NOBRANCH, s);
1162         }
1163
1164         branch = branch_get(s->branch + 11);
1165         if (s->is_initial)
1166                 color_fprintf(s->fp, header_color, _("Initial commit on "));
1167         if (!stat_tracking_info(branch, &num_ours, &num_theirs)) {
1168                 color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1169                 fputc(s->null_termination ? '\0' : '\n', s->fp);
1170                 return;
1171         }
1172
1173         base = branch->merge[0]->dst;
1174         base = shorten_unambiguous_ref(base, 0);
1175         color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1176         color_fprintf(s->fp, header_color, "...");
1177         color_fprintf(s->fp, branch_color_remote, "%s", base);
1178
1179         color_fprintf(s->fp, header_color, " [");
1180         if (!num_ours) {
1181                 color_fprintf(s->fp, header_color, _("behind "));
1182                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1183         } else if (!num_theirs) {
1184                 color_fprintf(s->fp, header_color, _("ahead "));
1185                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1186         } else {
1187                 color_fprintf(s->fp, header_color, _("ahead "));
1188                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1189                 color_fprintf(s->fp, header_color, _(", behind "));
1190                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1191         }
1192
1193         color_fprintf(s->fp, header_color, "]");
1194         fputc(s->null_termination ? '\0' : '\n', s->fp);
1195 }
1196
1197 void wt_shortstatus_print(struct wt_status *s)
1198 {
1199         int i;
1200
1201         if (s->show_branch)
1202                 wt_shortstatus_print_tracking(s);
1203
1204         for (i = 0; i < s->change.nr; i++) {
1205                 struct wt_status_change_data *d;
1206                 struct string_list_item *it;
1207
1208                 it = &(s->change.items[i]);
1209                 d = it->util;
1210                 if (d->stagemask)
1211                         wt_shortstatus_unmerged(it, s);
1212                 else
1213                         wt_shortstatus_status(it, s);
1214         }
1215         for (i = 0; i < s->untracked.nr; i++) {
1216                 struct string_list_item *it;
1217
1218                 it = &(s->untracked.items[i]);
1219                 wt_shortstatus_other(it, s, "??");
1220         }
1221         for (i = 0; i < s->ignored.nr; i++) {
1222                 struct string_list_item *it;
1223
1224                 it = &(s->ignored.items[i]);
1225                 wt_shortstatus_other(it, s, "!!");
1226         }
1227 }
1228
1229 void wt_porcelain_print(struct wt_status *s)
1230 {
1231         s->use_color = 0;
1232         s->relative_paths = 0;
1233         s->prefix = NULL;
1234         wt_shortstatus_print(s);
1235 }