wt-status.con commit Merge tag 'v2.9.5' into maint-2.10 (d78f06a)
   1#include "cache.h"
   2#include "wt-status.h"
   3#include "object.h"
   4#include "dir.h"
   5#include "commit.h"
   6#include "diff.h"
   7#include "revision.h"
   8#include "diffcore.h"
   9#include "quote.h"
  10#include "run-command.h"
  11#include "argv-array.h"
  12#include "remote.h"
  13#include "refs.h"
  14#include "submodule.h"
  15#include "column.h"
  16#include "strbuf.h"
  17#include "utf8.h"
  18#include "worktree.h"
  19
  20static const char cut_line[] =
  21"------------------------ >8 ------------------------\n";
  22
  23static 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
  35static 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
  45static 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
  91void 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
 101void 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
 111static 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
 121void 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
 142static 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
 194static 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
 210static 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
 229static 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
 241static 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
 248static 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
 270static 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
 294static 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
 307static 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
 334static 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_addstr(&extra, _("new commits, "));
 371                        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 372                                strbuf_addstr(&extra, _("modified content, "));
 373                        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 374                                strbuf_addstr(&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
 409static 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 = !!oidcmp(&p->one->oid,
 436                                                            &p->two->oid);
 437        }
 438}
 439
 440static int unmerged_mask(const char *path)
 441{
 442        int pos, mask;
 443        const struct cache_entry *ce;
 444
 445        pos = cache_name_pos(path, strlen(path));
 446        if (0 <= pos)
 447                return 0;
 448
 449        mask = 0;
 450        pos = -pos-1;
 451        while (pos < active_nr) {
 452                ce = active_cache[pos++];
 453                if (strcmp(ce->name, path) || !ce_stage(ce))
 454                        break;
 455                mask |= (1 << (ce_stage(ce) - 1));
 456        }
 457        return mask;
 458}
 459
 460static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 461                                         struct diff_options *options,
 462                                         void *data)
 463{
 464        struct wt_status *s = data;
 465        int i;
 466
 467        for (i = 0; i < q->nr; i++) {
 468                struct diff_filepair *p;
 469                struct string_list_item *it;
 470                struct wt_status_change_data *d;
 471
 472                p = q->queue[i];
 473                it = string_list_insert(&s->change, p->two->path);
 474                d = it->util;
 475                if (!d) {
 476                        d = xcalloc(1, sizeof(*d));
 477                        it->util = d;
 478                }
 479                if (!d->index_status)
 480                        d->index_status = p->status;
 481                switch (p->status) {
 482                case DIFF_STATUS_COPIED:
 483                case DIFF_STATUS_RENAMED:
 484                        d->head_path = xstrdup(p->one->path);
 485                        break;
 486                case DIFF_STATUS_UNMERGED:
 487                        d->stagemask = unmerged_mask(p->two->path);
 488                        break;
 489                }
 490        }
 491}
 492
 493static void wt_status_collect_changes_worktree(struct wt_status *s)
 494{
 495        struct rev_info rev;
 496
 497        init_revisions(&rev, NULL);
 498        setup_revisions(0, NULL, &rev, NULL);
 499        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 500        DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
 501        if (!s->show_untracked_files)
 502                DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
 503        if (s->ignore_submodule_arg) {
 504                DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 505                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 506        }
 507        rev.diffopt.format_callback = wt_status_collect_changed_cb;
 508        rev.diffopt.format_callback_data = s;
 509        copy_pathspec(&rev.prune_data, &s->pathspec);
 510        run_diff_files(&rev, 0);
 511}
 512
 513static void wt_status_collect_changes_index(struct wt_status *s)
 514{
 515        struct rev_info rev;
 516        struct setup_revision_opt opt;
 517
 518        init_revisions(&rev, NULL);
 519        memset(&opt, 0, sizeof(opt));
 520        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 521        setup_revisions(0, NULL, &rev, &opt);
 522
 523        DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 524        if (s->ignore_submodule_arg) {
 525                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 526        } else {
 527                /*
 528                 * Unless the user did explicitly request a submodule ignore
 529                 * mode by passing a command line option we do not ignore any
 530                 * changed submodule SHA-1s when comparing index and HEAD, no
 531                 * matter what is configured. Otherwise the user won't be
 532                 * shown any submodules she manually added (and which are
 533                 * staged to be committed), which would be really confusing.
 534                 */
 535                handle_ignore_submodules_arg(&rev.diffopt, "dirty");
 536        }
 537
 538        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 539        rev.diffopt.format_callback = wt_status_collect_updated_cb;
 540        rev.diffopt.format_callback_data = s;
 541        rev.diffopt.detect_rename = 1;
 542        rev.diffopt.rename_limit = 200;
 543        rev.diffopt.break_opt = 0;
 544        copy_pathspec(&rev.prune_data, &s->pathspec);
 545        run_diff_index(&rev, 1);
 546}
 547
 548static void wt_status_collect_changes_initial(struct wt_status *s)
 549{
 550        int i;
 551
 552        for (i = 0; i < active_nr; i++) {
 553                struct string_list_item *it;
 554                struct wt_status_change_data *d;
 555                const struct cache_entry *ce = active_cache[i];
 556
 557                if (!ce_path_match(ce, &s->pathspec, NULL))
 558                        continue;
 559                it = string_list_insert(&s->change, ce->name);
 560                d = it->util;
 561                if (!d) {
 562                        d = xcalloc(1, sizeof(*d));
 563                        it->util = d;
 564                }
 565                if (ce_stage(ce)) {
 566                        d->index_status = DIFF_STATUS_UNMERGED;
 567                        d->stagemask |= (1 << (ce_stage(ce) - 1));
 568                }
 569                else
 570                        d->index_status = DIFF_STATUS_ADDED;
 571        }
 572}
 573
 574static void wt_status_collect_untracked(struct wt_status *s)
 575{
 576        int i;
 577        struct dir_struct dir;
 578        uint64_t t_begin = getnanotime();
 579
 580        if (!s->show_untracked_files)
 581                return;
 582
 583        memset(&dir, 0, sizeof(dir));
 584        if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 585                dir.flags |=
 586                        DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 587        if (s->show_ignored_files)
 588                dir.flags |= DIR_SHOW_IGNORED_TOO;
 589        else
 590                dir.untracked = the_index.untracked;
 591        setup_standard_excludes(&dir);
 592
 593        fill_directory(&dir, &s->pathspec);
 594
 595        for (i = 0; i < dir.nr; i++) {
 596                struct dir_entry *ent = dir.entries[i];
 597                if (cache_name_is_other(ent->name, ent->len) &&
 598                    dir_path_match(ent, &s->pathspec, 0, NULL))
 599                        string_list_insert(&s->untracked, ent->name);
 600                free(ent);
 601        }
 602
 603        for (i = 0; i < dir.ignored_nr; i++) {
 604                struct dir_entry *ent = dir.ignored[i];
 605                if (cache_name_is_other(ent->name, ent->len) &&
 606                    dir_path_match(ent, &s->pathspec, 0, NULL))
 607                        string_list_insert(&s->ignored, ent->name);
 608                free(ent);
 609        }
 610
 611        free(dir.entries);
 612        free(dir.ignored);
 613        clear_directory(&dir);
 614
 615        if (advice_status_u_option)
 616                s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 617}
 618
 619void wt_status_collect(struct wt_status *s)
 620{
 621        wt_status_collect_changes_worktree(s);
 622
 623        if (s->is_initial)
 624                wt_status_collect_changes_initial(s);
 625        else
 626                wt_status_collect_changes_index(s);
 627        wt_status_collect_untracked(s);
 628}
 629
 630static void wt_status_print_unmerged(struct wt_status *s)
 631{
 632        int shown_header = 0;
 633        int i;
 634
 635        for (i = 0; i < s->change.nr; i++) {
 636                struct wt_status_change_data *d;
 637                struct string_list_item *it;
 638                it = &(s->change.items[i]);
 639                d = it->util;
 640                if (!d->stagemask)
 641                        continue;
 642                if (!shown_header) {
 643                        wt_status_print_unmerged_header(s);
 644                        shown_header = 1;
 645                }
 646                wt_status_print_unmerged_data(s, it);
 647        }
 648        if (shown_header)
 649                wt_status_print_trailer(s);
 650
 651}
 652
 653static void wt_status_print_updated(struct wt_status *s)
 654{
 655        int shown_header = 0;
 656        int i;
 657
 658        for (i = 0; i < s->change.nr; i++) {
 659                struct wt_status_change_data *d;
 660                struct string_list_item *it;
 661                it = &(s->change.items[i]);
 662                d = it->util;
 663                if (!d->index_status ||
 664                    d->index_status == DIFF_STATUS_UNMERGED)
 665                        continue;
 666                if (!shown_header) {
 667                        wt_status_print_cached_header(s);
 668                        s->commitable = 1;
 669                        shown_header = 1;
 670                }
 671                wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
 672        }
 673        if (shown_header)
 674                wt_status_print_trailer(s);
 675}
 676
 677/*
 678 * -1 : has delete
 679 *  0 : no change
 680 *  1 : some change but no delete
 681 */
 682static int wt_status_check_worktree_changes(struct wt_status *s,
 683                                             int *dirty_submodules)
 684{
 685        int i;
 686        int changes = 0;
 687
 688        *dirty_submodules = 0;
 689
 690        for (i = 0; i < s->change.nr; i++) {
 691                struct wt_status_change_data *d;
 692                d = s->change.items[i].util;
 693                if (!d->worktree_status ||
 694                    d->worktree_status == DIFF_STATUS_UNMERGED)
 695                        continue;
 696                if (!changes)
 697                        changes = 1;
 698                if (d->dirty_submodule)
 699                        *dirty_submodules = 1;
 700                if (d->worktree_status == DIFF_STATUS_DELETED)
 701                        changes = -1;
 702        }
 703        return changes;
 704}
 705
 706static void wt_status_print_changed(struct wt_status *s)
 707{
 708        int i, dirty_submodules;
 709        int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 710
 711        if (!worktree_changes)
 712                return;
 713
 714        wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 715
 716        for (i = 0; i < s->change.nr; i++) {
 717                struct wt_status_change_data *d;
 718                struct string_list_item *it;
 719                it = &(s->change.items[i]);
 720                d = it->util;
 721                if (!d->worktree_status ||
 722                    d->worktree_status == DIFF_STATUS_UNMERGED)
 723                        continue;
 724                wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
 725        }
 726        wt_status_print_trailer(s);
 727}
 728
 729static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
 730{
 731        struct child_process sm_summary = CHILD_PROCESS_INIT;
 732        struct strbuf cmd_stdout = STRBUF_INIT;
 733        struct strbuf summary = STRBUF_INIT;
 734        char *summary_content;
 735
 736        argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 737                         s->index_file);
 738
 739        argv_array_push(&sm_summary.args, "submodule");
 740        argv_array_push(&sm_summary.args, "summary");
 741        argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 742        argv_array_push(&sm_summary.args, "--for-status");
 743        argv_array_push(&sm_summary.args, "--summary-limit");
 744        argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 745        if (!uncommitted)
 746                argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 747
 748        sm_summary.git_cmd = 1;
 749        sm_summary.no_stdin = 1;
 750
 751        capture_command(&sm_summary, &cmd_stdout, 1024);
 752
 753        /* prepend header, only if there's an actual output */
 754        if (cmd_stdout.len) {
 755                if (uncommitted)
 756                        strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 757                else
 758                        strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 759                strbuf_addstr(&summary, "\n\n");
 760        }
 761        strbuf_addbuf(&summary, &cmd_stdout);
 762        strbuf_release(&cmd_stdout);
 763
 764        if (s->display_comment_prefix) {
 765                size_t len;
 766                summary_content = strbuf_detach(&summary, &len);
 767                strbuf_add_commented_lines(&summary, summary_content, len);
 768                free(summary_content);
 769        }
 770
 771        fputs(summary.buf, s->fp);
 772        strbuf_release(&summary);
 773}
 774
 775static void wt_status_print_other(struct wt_status *s,
 776                                  struct string_list *l,
 777                                  const char *what,
 778                                  const char *how)
 779{
 780        int i;
 781        struct strbuf buf = STRBUF_INIT;
 782        static struct string_list output = STRING_LIST_INIT_DUP;
 783        struct column_options copts;
 784
 785        if (!l->nr)
 786                return;
 787
 788        wt_status_print_other_header(s, what, how);
 789
 790        for (i = 0; i < l->nr; i++) {
 791                struct string_list_item *it;
 792                const char *path;
 793                it = &(l->items[i]);
 794                path = quote_path(it->string, s->prefix, &buf);
 795                if (column_active(s->colopts)) {
 796                        string_list_append(&output, path);
 797                        continue;
 798                }
 799                status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 800                status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 801                                   "%s\n", path);
 802        }
 803
 804        strbuf_release(&buf);
 805        if (!column_active(s->colopts))
 806                goto conclude;
 807
 808        strbuf_addf(&buf, "%s%s\t%s",
 809                    color(WT_STATUS_HEADER, s),
 810                    s->display_comment_prefix ? "#" : "",
 811                    color(WT_STATUS_UNTRACKED, s));
 812        memset(&copts, 0, sizeof(copts));
 813        copts.padding = 1;
 814        copts.indent = buf.buf;
 815        if (want_color(s->use_color))
 816                copts.nl = GIT_COLOR_RESET "\n";
 817        print_columns(&output, s->colopts, &copts);
 818        string_list_clear(&output, 0);
 819        strbuf_release(&buf);
 820conclude:
 821        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 822}
 823
 824void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
 825{
 826        const char *p;
 827        struct strbuf pattern = STRBUF_INIT;
 828
 829        strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
 830        if (starts_with(buf->buf, pattern.buf + 1))
 831                strbuf_setlen(buf, 0);
 832        else if ((p = strstr(buf->buf, pattern.buf)))
 833                strbuf_setlen(buf, p - buf->buf + 1);
 834        strbuf_release(&pattern);
 835}
 836
 837void 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
 848static 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
 899static void wt_status_print_tracking(struct wt_status *s)
 900{
 901        struct strbuf sb = STRBUF_INIT;
 902        const char *cp, *ep, *branch_name;
 903        struct branch *branch;
 904        char comment_line_string[3];
 905        int i;
 906
 907        assert(s->branch && !s->is_initial);
 908        if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
 909                return;
 910        branch = branch_get(branch_name);
 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
 932static 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
 945static 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                        status_printf_ln(s, color,
 955                                         _("  (use \"git merge --abort\" to abort the merge)"));
 956                }
 957        } else {
 958                s-> commitable = 1;
 959                status_printf_ln(s, color,
 960                        _("All conflicts fixed but you are still merging."));
 961                if (s->hints)
 962                        status_printf_ln(s, color,
 963                                _("  (use \"git commit\" to conclude merge)"));
 964        }
 965        wt_status_print_trailer(s);
 966}
 967
 968static void show_am_in_progress(struct wt_status *s,
 969                                struct wt_status_state *state,
 970                                const char *color)
 971{
 972        status_printf_ln(s, color,
 973                _("You are in the middle of an am session."));
 974        if (state->am_empty_patch)
 975                status_printf_ln(s, color,
 976                        _("The current patch is empty."));
 977        if (s->hints) {
 978                if (!state->am_empty_patch)
 979                        status_printf_ln(s, color,
 980                                _("  (fix conflicts and then run \"git am --continue\")"));
 981                status_printf_ln(s, color,
 982                        _("  (use \"git am --skip\" to skip this patch)"));
 983                status_printf_ln(s, color,
 984                        _("  (use \"git am --abort\" to restore the original branch)"));
 985        }
 986        wt_status_print_trailer(s);
 987}
 988
 989static char *read_line_from_git_path(const char *filename)
 990{
 991        struct strbuf buf = STRBUF_INIT;
 992        FILE *fp = fopen(git_path("%s", filename), "r");
 993        if (!fp) {
 994                strbuf_release(&buf);
 995                return NULL;
 996        }
 997        strbuf_getline_lf(&buf, fp);
 998        if (!fclose(fp)) {
 999                return strbuf_detach(&buf, NULL);
1000        } else {
1001                strbuf_release(&buf);
1002                return NULL;
1003        }
1004}
1005
1006static int split_commit_in_progress(struct wt_status *s)
1007{
1008        int split_in_progress = 0;
1009        char *head = read_line_from_git_path("HEAD");
1010        char *orig_head = read_line_from_git_path("ORIG_HEAD");
1011        char *rebase_amend = read_line_from_git_path("rebase-merge/amend");
1012        char *rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1013
1014        if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
1015            !s->branch || strcmp(s->branch, "HEAD"))
1016                return split_in_progress;
1017
1018        if (!strcmp(rebase_amend, rebase_orig_head)) {
1019                if (strcmp(head, rebase_amend))
1020                        split_in_progress = 1;
1021        } else if (strcmp(orig_head, rebase_orig_head)) {
1022                split_in_progress = 1;
1023        }
1024
1025        if (!s->amend && !s->nowarn && !s->workdir_dirty)
1026                split_in_progress = 0;
1027
1028        free(head);
1029        free(orig_head);
1030        free(rebase_amend);
1031        free(rebase_orig_head);
1032        return split_in_progress;
1033}
1034
1035/*
1036 * Turn
1037 * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1038 * into
1039 * "pick d6a2f03 some message"
1040 *
1041 * The function assumes that the line does not contain useless spaces
1042 * before or after the command.
1043 */
1044static void abbrev_sha1_in_line(struct strbuf *line)
1045{
1046        struct strbuf **split;
1047        int i;
1048
1049        if (starts_with(line->buf, "exec ") ||
1050            starts_with(line->buf, "x "))
1051                return;
1052
1053        split = strbuf_split_max(line, ' ', 3);
1054        if (split[0] && split[1]) {
1055                unsigned char sha1[20];
1056
1057                /*
1058                 * strbuf_split_max left a space. Trim it and re-add
1059                 * it after abbreviation.
1060                 */
1061                strbuf_trim(split[1]);
1062                if (!get_sha1(split[1]->buf, sha1)) {
1063                        strbuf_reset(split[1]);
1064                        strbuf_add_unique_abbrev(split[1], sha1,
1065                                                 DEFAULT_ABBREV);
1066                        strbuf_addch(split[1], ' ');
1067                        strbuf_reset(line);
1068                        for (i = 0; split[i]; i++)
1069                                strbuf_addbuf(line, split[i]);
1070                }
1071        }
1072        strbuf_list_free(split);
1073}
1074
1075static void read_rebase_todolist(const char *fname, struct string_list *lines)
1076{
1077        struct strbuf line = STRBUF_INIT;
1078        FILE *f = fopen(git_path("%s", fname), "r");
1079
1080        if (!f)
1081                die_errno("Could not open file %s for reading",
1082                          git_path("%s", fname));
1083        while (!strbuf_getline_lf(&line, f)) {
1084                if (line.len && line.buf[0] == comment_line_char)
1085                        continue;
1086                strbuf_trim(&line);
1087                if (!line.len)
1088                        continue;
1089                abbrev_sha1_in_line(&line);
1090                string_list_append(lines, line.buf);
1091        }
1092}
1093
1094static void show_rebase_information(struct wt_status *s,
1095                                        struct wt_status_state *state,
1096                                        const char *color)
1097{
1098        if (state->rebase_interactive_in_progress) {
1099                int i;
1100                int nr_lines_to_show = 2;
1101
1102                struct string_list have_done = STRING_LIST_INIT_DUP;
1103                struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1104
1105                read_rebase_todolist("rebase-merge/done", &have_done);
1106                read_rebase_todolist("rebase-merge/git-rebase-todo", &yet_to_do);
1107
1108                if (have_done.nr == 0)
1109                        status_printf_ln(s, color, _("No commands done."));
1110                else {
1111                        status_printf_ln(s, color,
1112                                Q_("Last command done (%d command done):",
1113                                        "Last commands done (%d commands done):",
1114                                        have_done.nr),
1115                                have_done.nr);
1116                        for (i = (have_done.nr > nr_lines_to_show)
1117                                ? have_done.nr - nr_lines_to_show : 0;
1118                                i < have_done.nr;
1119                                i++)
1120                                status_printf_ln(s, color, "   %s", have_done.items[i].string);
1121                        if (have_done.nr > nr_lines_to_show && s->hints)
1122                                status_printf_ln(s, color,
1123                                        _("  (see more in file %s)"), git_path("rebase-merge/done"));
1124                }
1125
1126                if (yet_to_do.nr == 0)
1127                        status_printf_ln(s, color,
1128                                         _("No commands remaining."));
1129                else {
1130                        status_printf_ln(s, color,
1131                                Q_("Next command to do (%d remaining command):",
1132                                        "Next commands to do (%d remaining commands):",
1133                                        yet_to_do.nr),
1134                                yet_to_do.nr);
1135                        for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1136                                status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1137                        if (s->hints)
1138                                status_printf_ln(s, color,
1139                                        _("  (use \"git rebase --edit-todo\" to view and edit)"));
1140                }
1141                string_list_clear(&yet_to_do, 0);
1142                string_list_clear(&have_done, 0);
1143        }
1144}
1145
1146static void print_rebase_state(struct wt_status *s,
1147                                struct wt_status_state *state,
1148                                const char *color)
1149{
1150        if (state->branch)
1151                status_printf_ln(s, color,
1152                                 _("You are currently rebasing branch '%s' on '%s'."),
1153                                 state->branch,
1154                                 state->onto);
1155        else
1156                status_printf_ln(s, color,
1157                                 _("You are currently rebasing."));
1158}
1159
1160static void show_rebase_in_progress(struct wt_status *s,
1161                                struct wt_status_state *state,
1162                                const char *color)
1163{
1164        struct stat st;
1165
1166        show_rebase_information(s, state, color);
1167        if (has_unmerged(s)) {
1168                print_rebase_state(s, state, color);
1169                if (s->hints) {
1170                        status_printf_ln(s, color,
1171                                _("  (fix conflicts and then run \"git rebase --continue\")"));
1172                        status_printf_ln(s, color,
1173                                _("  (use \"git rebase --skip\" to skip this patch)"));
1174                        status_printf_ln(s, color,
1175                                _("  (use \"git rebase --abort\" to check out the original branch)"));
1176                }
1177        } else if (state->rebase_in_progress || !stat(git_path_merge_msg(), &st)) {
1178                print_rebase_state(s, state, color);
1179                if (s->hints)
1180                        status_printf_ln(s, color,
1181                                _("  (all conflicts fixed: run \"git rebase --continue\")"));
1182        } else if (split_commit_in_progress(s)) {
1183                if (state->branch)
1184                        status_printf_ln(s, color,
1185                                         _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1186                                         state->branch,
1187                                         state->onto);
1188                else
1189                        status_printf_ln(s, color,
1190                                         _("You are currently splitting a commit during a rebase."));
1191                if (s->hints)
1192                        status_printf_ln(s, color,
1193                                _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1194        } else {
1195                if (state->branch)
1196                        status_printf_ln(s, color,
1197                                         _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1198                                         state->branch,
1199                                         state->onto);
1200                else
1201                        status_printf_ln(s, color,
1202                                         _("You are currently editing a commit during a rebase."));
1203                if (s->hints && !s->amend) {
1204                        status_printf_ln(s, color,
1205                                _("  (use \"git commit --amend\" to amend the current commit)"));
1206                        status_printf_ln(s, color,
1207                                _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1208                }
1209        }
1210        wt_status_print_trailer(s);
1211}
1212
1213static void show_cherry_pick_in_progress(struct wt_status *s,
1214                                        struct wt_status_state *state,
1215                                        const char *color)
1216{
1217        status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1218                        find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1219        if (s->hints) {
1220                if (has_unmerged(s))
1221                        status_printf_ln(s, color,
1222                                _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1223                else
1224                        status_printf_ln(s, color,
1225                                _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1226                status_printf_ln(s, color,
1227                        _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1228        }
1229        wt_status_print_trailer(s);
1230}
1231
1232static void show_revert_in_progress(struct wt_status *s,
1233                                        struct wt_status_state *state,
1234                                        const char *color)
1235{
1236        status_printf_ln(s, color, _("You are currently reverting commit %s."),
1237                         find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1238        if (s->hints) {
1239                if (has_unmerged(s))
1240                        status_printf_ln(s, color,
1241                                _("  (fix conflicts and run \"git revert --continue\")"));
1242                else
1243                        status_printf_ln(s, color,
1244                                _("  (all conflicts fixed: run \"git revert --continue\")"));
1245                status_printf_ln(s, color,
1246                        _("  (use \"git revert --abort\" to cancel the revert operation)"));
1247        }
1248        wt_status_print_trailer(s);
1249}
1250
1251static void show_bisect_in_progress(struct wt_status *s,
1252                                struct wt_status_state *state,
1253                                const char *color)
1254{
1255        if (state->branch)
1256                status_printf_ln(s, color,
1257                                 _("You are currently bisecting, started from branch '%s'."),
1258                                 state->branch);
1259        else
1260                status_printf_ln(s, color,
1261                                 _("You are currently bisecting."));
1262        if (s->hints)
1263                status_printf_ln(s, color,
1264                        _("  (use \"git bisect reset\" to get back to the original branch)"));
1265        wt_status_print_trailer(s);
1266}
1267
1268/*
1269 * Extract branch information from rebase/bisect
1270 */
1271static char *get_branch(const struct worktree *wt, const char *path)
1272{
1273        struct strbuf sb = STRBUF_INIT;
1274        unsigned char sha1[20];
1275        const char *branch_name;
1276
1277        if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
1278                goto got_nothing;
1279
1280        while (sb.len && sb.buf[sb.len - 1] == '\n')
1281                strbuf_setlen(&sb, sb.len - 1);
1282        if (!sb.len)
1283                goto got_nothing;
1284        if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1285                strbuf_remove(&sb, 0, branch_name - sb.buf);
1286        else if (starts_with(sb.buf, "refs/"))
1287                ;
1288        else if (!get_sha1_hex(sb.buf, sha1)) {
1289                strbuf_reset(&sb);
1290                strbuf_add_unique_abbrev(&sb, sha1, DEFAULT_ABBREV);
1291        } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1292                goto got_nothing;
1293        else                    /* bisect */
1294                ;
1295        return strbuf_detach(&sb, NULL);
1296
1297got_nothing:
1298        strbuf_release(&sb);
1299        return NULL;
1300}
1301
1302struct grab_1st_switch_cbdata {
1303        struct strbuf buf;
1304        unsigned char nsha1[20];
1305};
1306
1307static int grab_1st_switch(unsigned char *osha1, unsigned char *nsha1,
1308                           const char *email, unsigned long timestamp, int tz,
1309                           const char *message, void *cb_data)
1310{
1311        struct grab_1st_switch_cbdata *cb = cb_data;
1312        const char *target = NULL, *end;
1313
1314        if (!skip_prefix(message, "checkout: moving from ", &message))
1315                return 0;
1316        target = strstr(message, " to ");
1317        if (!target)
1318                return 0;
1319        target += strlen(" to ");
1320        strbuf_reset(&cb->buf);
1321        hashcpy(cb->nsha1, nsha1);
1322        end = strchrnul(target, '\n');
1323        strbuf_add(&cb->buf, target, end - target);
1324        if (!strcmp(cb->buf.buf, "HEAD")) {
1325                /* HEAD is relative. Resolve it to the right reflog entry. */
1326                strbuf_reset(&cb->buf);
1327                strbuf_add_unique_abbrev(&cb->buf, nsha1, DEFAULT_ABBREV);
1328        }
1329        return 1;
1330}
1331
1332static void wt_status_get_detached_from(struct wt_status_state *state)
1333{
1334        struct grab_1st_switch_cbdata cb;
1335        struct commit *commit;
1336        unsigned char sha1[20];
1337        char *ref = NULL;
1338
1339        strbuf_init(&cb.buf, 0);
1340        if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1341                strbuf_release(&cb.buf);
1342                return;
1343        }
1344
1345        if (dwim_ref(cb.buf.buf, cb.buf.len, sha1, &ref) == 1 &&
1346            /* sha1 is a commit? match without further lookup */
1347            (!hashcmp(cb.nsha1, sha1) ||
1348             /* perhaps sha1 is a tag, try to dereference to a commit */
1349             ((commit = lookup_commit_reference_gently(sha1, 1)) != NULL &&
1350              !hashcmp(cb.nsha1, commit->object.oid.hash)))) {
1351                const char *from = ref;
1352                if (!skip_prefix(from, "refs/tags/", &from))
1353                        skip_prefix(from, "refs/remotes/", &from);
1354                state->detached_from = xstrdup(from);
1355        } else
1356                state->detached_from =
1357                        xstrdup(find_unique_abbrev(cb.nsha1, DEFAULT_ABBREV));
1358        hashcpy(state->detached_sha1, cb.nsha1);
1359        state->detached_at = !get_sha1("HEAD", sha1) &&
1360                             !hashcmp(sha1, state->detached_sha1);
1361
1362        free(ref);
1363        strbuf_release(&cb.buf);
1364}
1365
1366int wt_status_check_rebase(const struct worktree *wt,
1367                           struct wt_status_state *state)
1368{
1369        struct stat st;
1370
1371        if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
1372                if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
1373                        state->am_in_progress = 1;
1374                        if (!stat(worktree_git_path(wt, "rebase-apply/patch"), &st) && !st.st_size)
1375                                state->am_empty_patch = 1;
1376                } else {
1377                        state->rebase_in_progress = 1;
1378                        state->branch = get_branch(wt, "rebase-apply/head-name");
1379                        state->onto = get_branch(wt, "rebase-apply/onto");
1380                }
1381        } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
1382                if (!stat(worktree_git_path(wt, "rebase-merge/interactive"), &st))
1383                        state->rebase_interactive_in_progress = 1;
1384                else
1385                        state->rebase_in_progress = 1;
1386                state->branch = get_branch(wt, "rebase-merge/head-name");
1387                state->onto = get_branch(wt, "rebase-merge/onto");
1388        } else
1389                return 0;
1390        return 1;
1391}
1392
1393int wt_status_check_bisect(const struct worktree *wt,
1394                           struct wt_status_state *state)
1395{
1396        struct stat st;
1397
1398        if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
1399                state->bisect_in_progress = 1;
1400                state->branch = get_branch(wt, "BISECT_START");
1401                return 1;
1402        }
1403        return 0;
1404}
1405
1406void wt_status_get_state(struct wt_status_state *state,
1407                         int get_detached_from)
1408{
1409        struct stat st;
1410        unsigned char sha1[20];
1411
1412        if (!stat(git_path_merge_head(), &st)) {
1413                state->merge_in_progress = 1;
1414        } else if (wt_status_check_rebase(NULL, state)) {
1415                ;               /* all set */
1416        } else if (!stat(git_path_cherry_pick_head(), &st) &&
1417                        !get_sha1("CHERRY_PICK_HEAD", sha1)) {
1418                state->cherry_pick_in_progress = 1;
1419                hashcpy(state->cherry_pick_head_sha1, sha1);
1420        }
1421        wt_status_check_bisect(NULL, state);
1422        if (!stat(git_path_revert_head(), &st) &&
1423            !get_sha1("REVERT_HEAD", sha1)) {
1424                state->revert_in_progress = 1;
1425                hashcpy(state->revert_head_sha1, sha1);
1426        }
1427
1428        if (get_detached_from)
1429                wt_status_get_detached_from(state);
1430}
1431
1432static void wt_status_print_state(struct wt_status *s,
1433                                  struct wt_status_state *state)
1434{
1435        const char *state_color = color(WT_STATUS_HEADER, s);
1436        if (state->merge_in_progress)
1437                show_merge_in_progress(s, state, state_color);
1438        else if (state->am_in_progress)
1439                show_am_in_progress(s, state, state_color);
1440        else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1441                show_rebase_in_progress(s, state, state_color);
1442        else if (state->cherry_pick_in_progress)
1443                show_cherry_pick_in_progress(s, state, state_color);
1444        else if (state->revert_in_progress)
1445                show_revert_in_progress(s, state, state_color);
1446        if (state->bisect_in_progress)
1447                show_bisect_in_progress(s, state, state_color);
1448}
1449
1450void wt_status_print(struct wt_status *s)
1451{
1452        const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1453        const char *branch_status_color = color(WT_STATUS_HEADER, s);
1454        struct wt_status_state state;
1455
1456        memset(&state, 0, sizeof(state));
1457        wt_status_get_state(&state,
1458                            s->branch && !strcmp(s->branch, "HEAD"));
1459
1460        if (s->branch) {
1461                const char *on_what = _("On branch ");
1462                const char *branch_name = s->branch;
1463                if (!strcmp(branch_name, "HEAD")) {
1464                        branch_status_color = color(WT_STATUS_NOBRANCH, s);
1465                        if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1466                                if (state.rebase_interactive_in_progress)
1467                                        on_what = _("interactive rebase in progress; onto ");
1468                                else
1469                                        on_what = _("rebase in progress; onto ");
1470                                branch_name = state.onto;
1471                        } else if (state.detached_from) {
1472                                branch_name = state.detached_from;
1473                                if (state.detached_at)
1474                                        on_what = _("HEAD detached at ");
1475                                else
1476                                        on_what = _("HEAD detached from ");
1477                        } else {
1478                                branch_name = "";
1479                                on_what = _("Not currently on any branch.");
1480                        }
1481                } else
1482                        skip_prefix(branch_name, "refs/heads/", &branch_name);
1483                status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1484                status_printf_more(s, branch_status_color, "%s", on_what);
1485                status_printf_more(s, branch_color, "%s\n", branch_name);
1486                if (!s->is_initial)
1487                        wt_status_print_tracking(s);
1488        }
1489
1490        wt_status_print_state(s, &state);
1491        free(state.branch);
1492        free(state.onto);
1493        free(state.detached_from);
1494
1495        if (s->is_initial) {
1496                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1497                status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
1498                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1499        }
1500
1501        wt_status_print_updated(s);
1502        wt_status_print_unmerged(s);
1503        wt_status_print_changed(s);
1504        if (s->submodule_summary &&
1505            (!s->ignore_submodule_arg ||
1506             strcmp(s->ignore_submodule_arg, "all"))) {
1507                wt_status_print_submodule_summary(s, 0);  /* staged */
1508                wt_status_print_submodule_summary(s, 1);  /* unstaged */
1509        }
1510        if (s->show_untracked_files) {
1511                wt_status_print_other(s, &s->untracked, _("Untracked files"), "add");
1512                if (s->show_ignored_files)
1513                        wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1514                if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1515                        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1516                        status_printf_ln(s, GIT_COLOR_NORMAL,
1517                                         _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1518                                           "may speed it up, but you have to be careful not to forget to add\n"
1519                                           "new files yourself (see 'git help status')."),
1520                                         s->untracked_in_ms / 1000.0);
1521                }
1522        } else if (s->commitable)
1523                status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1524                        s->hints
1525                        ? _(" (use -u option to show untracked files)") : "");
1526
1527        if (s->verbose)
1528                wt_status_print_verbose(s);
1529        if (!s->commitable) {
1530                if (s->amend)
1531                        status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1532                else if (s->nowarn)
1533                        ; /* nothing */
1534                else if (s->workdir_dirty) {
1535                        if (s->hints)
1536                                printf(_("no changes added to commit "
1537                                         "(use \"git add\" and/or \"git commit -a\")\n"));
1538                        else
1539                                printf(_("no changes added to commit\n"));
1540                } else if (s->untracked.nr) {
1541                        if (s->hints)
1542                                printf(_("nothing added to commit but untracked files "
1543                                         "present (use \"git add\" to track)\n"));
1544                        else
1545                                printf(_("nothing added to commit but untracked files present\n"));
1546                } else if (s->is_initial) {
1547                        if (s->hints)
1548                                printf(_("nothing to commit (create/copy files "
1549                                         "and use \"git add\" to track)\n"));
1550                        else
1551                                printf(_("nothing to commit\n"));
1552                } else if (!s->show_untracked_files) {
1553                        if (s->hints)
1554                                printf(_("nothing to commit (use -u to show untracked files)\n"));
1555                        else
1556                                printf(_("nothing to commit\n"));
1557                } else
1558                        printf(_("nothing to commit, working tree clean\n"));
1559        }
1560}
1561
1562static void wt_shortstatus_unmerged(struct string_list_item *it,
1563                           struct wt_status *s)
1564{
1565        struct wt_status_change_data *d = it->util;
1566        const char *how = "??";
1567
1568        switch (d->stagemask) {
1569        case 1: how = "DD"; break; /* both deleted */
1570        case 2: how = "AU"; break; /* added by us */
1571        case 3: how = "UD"; break; /* deleted by them */
1572        case 4: how = "UA"; break; /* added by them */
1573        case 5: how = "DU"; break; /* deleted by us */
1574        case 6: how = "AA"; break; /* both added */
1575        case 7: how = "UU"; break; /* both modified */
1576        }
1577        color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1578        if (s->null_termination) {
1579                fprintf(stdout, " %s%c", it->string, 0);
1580        } else {
1581                struct strbuf onebuf = STRBUF_INIT;
1582                const char *one;
1583                one = quote_path(it->string, s->prefix, &onebuf);
1584                printf(" %s\n", one);
1585                strbuf_release(&onebuf);
1586        }
1587}
1588
1589static void wt_shortstatus_status(struct string_list_item *it,
1590                         struct wt_status *s)
1591{
1592        struct wt_status_change_data *d = it->util;
1593
1594        if (d->index_status)
1595                color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1596        else
1597                putchar(' ');
1598        if (d->worktree_status)
1599                color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1600        else
1601                putchar(' ');
1602        putchar(' ');
1603        if (s->null_termination) {
1604                fprintf(stdout, "%s%c", it->string, 0);
1605                if (d->head_path)
1606                        fprintf(stdout, "%s%c", d->head_path, 0);
1607        } else {
1608                struct strbuf onebuf = STRBUF_INIT;
1609                const char *one;
1610                if (d->head_path) {
1611                        one = quote_path(d->head_path, s->prefix, &onebuf);
1612                        if (*one != '"' && strchr(one, ' ') != NULL) {
1613                                putchar('"');
1614                                strbuf_addch(&onebuf, '"');
1615                                one = onebuf.buf;
1616                        }
1617                        printf("%s -> ", one);
1618                        strbuf_release(&onebuf);
1619                }
1620                one = quote_path(it->string, s->prefix, &onebuf);
1621                if (*one != '"' && strchr(one, ' ') != NULL) {
1622                        putchar('"');
1623                        strbuf_addch(&onebuf, '"');
1624                        one = onebuf.buf;
1625                }
1626                printf("%s\n", one);
1627                strbuf_release(&onebuf);
1628        }
1629}
1630
1631static void wt_shortstatus_other(struct string_list_item *it,
1632                                 struct wt_status *s, const char *sign)
1633{
1634        if (s->null_termination) {
1635                fprintf(stdout, "%s %s%c", sign, it->string, 0);
1636        } else {
1637                struct strbuf onebuf = STRBUF_INIT;
1638                const char *one;
1639                one = quote_path(it->string, s->prefix, &onebuf);
1640                color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1641                printf(" %s\n", one);
1642                strbuf_release(&onebuf);
1643        }
1644}
1645
1646static void wt_shortstatus_print_tracking(struct wt_status *s)
1647{
1648        struct branch *branch;
1649        const char *header_color = color(WT_STATUS_HEADER, s);
1650        const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1651        const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1652
1653        const char *base;
1654        const char *branch_name;
1655        int num_ours, num_theirs;
1656        int upstream_is_gone = 0;
1657
1658        color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1659
1660        if (!s->branch)
1661                return;
1662        branch_name = s->branch;
1663
1664        if (s->is_initial)
1665                color_fprintf(s->fp, header_color, _("Initial commit on "));
1666
1667        if (!strcmp(s->branch, "HEAD")) {
1668                color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1669                              _("HEAD (no branch)"));
1670                goto conclude;
1671        }
1672
1673        skip_prefix(branch_name, "refs/heads/", &branch_name);
1674
1675        branch = branch_get(branch_name);
1676
1677        color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1678
1679        if (stat_tracking_info(branch, &num_ours, &num_theirs, &base) < 0) {
1680                if (!base)
1681                        goto conclude;
1682
1683                upstream_is_gone = 1;
1684        }
1685
1686        base = shorten_unambiguous_ref(base, 0);
1687        color_fprintf(s->fp, header_color, "...");
1688        color_fprintf(s->fp, branch_color_remote, "%s", base);
1689        free((char *)base);
1690
1691        if (!upstream_is_gone && !num_ours && !num_theirs)
1692                goto conclude;
1693
1694#define LABEL(string) (s->no_gettext ? (string) : _(string))
1695
1696        color_fprintf(s->fp, header_color, " [");
1697        if (upstream_is_gone) {
1698                color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1699        } else if (!num_ours) {
1700                color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1701                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1702        } else if (!num_theirs) {
1703                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1704                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1705        } else {
1706                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1707                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1708                color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1709                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1710        }
1711
1712        color_fprintf(s->fp, header_color, "]");
1713 conclude:
1714        fputc(s->null_termination ? '\0' : '\n', s->fp);
1715}
1716
1717void wt_shortstatus_print(struct wt_status *s)
1718{
1719        int i;
1720
1721        if (s->show_branch)
1722                wt_shortstatus_print_tracking(s);
1723
1724        for (i = 0; i < s->change.nr; i++) {
1725                struct wt_status_change_data *d;
1726                struct string_list_item *it;
1727
1728                it = &(s->change.items[i]);
1729                d = it->util;
1730                if (d->stagemask)
1731                        wt_shortstatus_unmerged(it, s);
1732                else
1733                        wt_shortstatus_status(it, s);
1734        }
1735        for (i = 0; i < s->untracked.nr; i++) {
1736                struct string_list_item *it;
1737
1738                it = &(s->untracked.items[i]);
1739                wt_shortstatus_other(it, s, "??");
1740        }
1741        for (i = 0; i < s->ignored.nr; i++) {
1742                struct string_list_item *it;
1743
1744                it = &(s->ignored.items[i]);
1745                wt_shortstatus_other(it, s, "!!");
1746        }
1747}
1748
1749void wt_porcelain_print(struct wt_status *s)
1750{
1751        s->use_color = 0;
1752        s->relative_paths = 0;
1753        s->prefix = NULL;
1754        s->no_gettext = 1;
1755        wt_shortstatus_print(s);
1756}