wt-status.con commit regex: use regexec_buf() (b7d36ff)
   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
  19static const char cut_line[] =
  20"------------------------ >8 ------------------------\n";
  21
  22static char default_wt_status_colors[][COLOR_MAXLEN] = {
  23        GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
  24        GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
  25        GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
  26        GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
  27        GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
  28        GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
  29        GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
  30        GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
  31        GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
  32};
  33
  34static const char *color(int slot, struct wt_status *s)
  35{
  36        const char *c = "";
  37        if (want_color(s->use_color))
  38                c = s->color_palette[slot];
  39        if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
  40                c = s->color_palette[WT_STATUS_HEADER];
  41        return c;
  42}
  43
  44static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
  45                const char *fmt, va_list ap, const char *trail)
  46{
  47        struct strbuf sb = STRBUF_INIT;
  48        struct strbuf linebuf = STRBUF_INIT;
  49        const char *line, *eol;
  50
  51        strbuf_vaddf(&sb, fmt, ap);
  52        if (!sb.len) {
  53                if (s->display_comment_prefix) {
  54                        strbuf_addch(&sb, comment_line_char);
  55                        if (!trail)
  56                                strbuf_addch(&sb, ' ');
  57                }
  58                color_print_strbuf(s->fp, color, &sb);
  59                if (trail)
  60                        fprintf(s->fp, "%s", trail);
  61                strbuf_release(&sb);
  62                return;
  63        }
  64        for (line = sb.buf; *line; line = eol + 1) {
  65                eol = strchr(line, '\n');
  66
  67                strbuf_reset(&linebuf);
  68                if (at_bol && s->display_comment_prefix) {
  69                        strbuf_addch(&linebuf, comment_line_char);
  70                        if (*line != '\n' && *line != '\t')
  71                                strbuf_addch(&linebuf, ' ');
  72                }
  73                if (eol)
  74                        strbuf_add(&linebuf, line, eol - line);
  75                else
  76                        strbuf_addstr(&linebuf, line);
  77                color_print_strbuf(s->fp, color, &linebuf);
  78                if (eol)
  79                        fprintf(s->fp, "\n");
  80                else
  81                        break;
  82                at_bol = 1;
  83        }
  84        if (trail)
  85                fprintf(s->fp, "%s", trail);
  86        strbuf_release(&linebuf);
  87        strbuf_release(&sb);
  88}
  89
  90void status_printf_ln(struct wt_status *s, const char *color,
  91                        const char *fmt, ...)
  92{
  93        va_list ap;
  94
  95        va_start(ap, fmt);
  96        status_vprintf(s, 1, color, fmt, ap, "\n");
  97        va_end(ap);
  98}
  99
 100void status_printf(struct wt_status *s, const char *color,
 101                        const char *fmt, ...)
 102{
 103        va_list ap;
 104
 105        va_start(ap, fmt);
 106        status_vprintf(s, 1, color, fmt, ap, NULL);
 107        va_end(ap);
 108}
 109
 110static void status_printf_more(struct wt_status *s, const char *color,
 111                               const char *fmt, ...)
 112{
 113        va_list ap;
 114
 115        va_start(ap, fmt);
 116        status_vprintf(s, 0, color, fmt, ap, NULL);
 117        va_end(ap);
 118}
 119
 120void wt_status_prepare(struct wt_status *s)
 121{
 122        unsigned char sha1[20];
 123
 124        memset(s, 0, sizeof(*s));
 125        memcpy(s->color_palette, default_wt_status_colors,
 126               sizeof(default_wt_status_colors));
 127        s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 128        s->use_color = -1;
 129        s->relative_paths = 1;
 130        s->branch = resolve_refdup("HEAD", 0, sha1, NULL);
 131        s->reference = "HEAD";
 132        s->fp = stdout;
 133        s->index_file = get_index_file();
 134        s->change.strdup_strings = 1;
 135        s->untracked.strdup_strings = 1;
 136        s->ignored.strdup_strings = 1;
 137        s->show_branch = -1;  /* unspecified */
 138        s->display_comment_prefix = 0;
 139}
 140
 141static void wt_status_print_unmerged_header(struct wt_status *s)
 142{
 143        int i;
 144        int del_mod_conflict = 0;
 145        int both_deleted = 0;
 146        int not_deleted = 0;
 147        const char *c = color(WT_STATUS_HEADER, s);
 148
 149        status_printf_ln(s, c, _("Unmerged paths:"));
 150
 151        for (i = 0; i < s->change.nr; i++) {
 152                struct string_list_item *it = &(s->change.items[i]);
 153                struct wt_status_change_data *d = it->util;
 154
 155                switch (d->stagemask) {
 156                case 0:
 157                        break;
 158                case 1:
 159                        both_deleted = 1;
 160                        break;
 161                case 3:
 162                case 5:
 163                        del_mod_conflict = 1;
 164                        break;
 165                default:
 166                        not_deleted = 1;
 167                        break;
 168                }
 169        }
 170
 171        if (!s->hints)
 172                return;
 173        if (s->whence != FROM_COMMIT)
 174                ;
 175        else if (!s->is_initial)
 176                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 177        else
 178                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 179
 180        if (!both_deleted) {
 181                if (!del_mod_conflict)
 182                        status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
 183                else
 184                        status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 185        } else if (!del_mod_conflict && !not_deleted) {
 186                status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
 187        } else {
 188                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
 189        }
 190        status_printf_ln(s, c, "%s", "");
 191}
 192
 193static void wt_status_print_cached_header(struct wt_status *s)
 194{
 195        const char *c = color(WT_STATUS_HEADER, s);
 196
 197        status_printf_ln(s, c, _("Changes to be committed:"));
 198        if (!s->hints)
 199                return;
 200        if (s->whence != FROM_COMMIT)
 201                ; /* NEEDSWORK: use "git reset --unresolve"??? */
 202        else if (!s->is_initial)
 203                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
 204        else
 205                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
 206        status_printf_ln(s, c, "%s", "");
 207}
 208
 209static void wt_status_print_dirty_header(struct wt_status *s,
 210                                         int has_deleted,
 211                                         int has_dirty_submodules)
 212{
 213        const char *c = color(WT_STATUS_HEADER, s);
 214
 215        status_printf_ln(s, c, _("Changes not staged for commit:"));
 216        if (!s->hints)
 217                return;
 218        if (!has_deleted)
 219                status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
 220        else
 221                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
 222        status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
 223        if (has_dirty_submodules)
 224                status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
 225        status_printf_ln(s, c, "%s", "");
 226}
 227
 228static void wt_status_print_other_header(struct wt_status *s,
 229                                         const char *what,
 230                                         const char *how)
 231{
 232        const char *c = color(WT_STATUS_HEADER, s);
 233        status_printf_ln(s, c, "%s:", what);
 234        if (!s->hints)
 235                return;
 236        status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
 237        status_printf_ln(s, c, "%s", "");
 238}
 239
 240static void wt_status_print_trailer(struct wt_status *s)
 241{
 242        status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 243}
 244
 245#define quote_path quote_path_relative
 246
 247static const char *wt_status_unmerged_status_string(int stagemask)
 248{
 249        switch (stagemask) {
 250        case 1:
 251                return _("both deleted:");
 252        case 2:
 253                return _("added by us:");
 254        case 3:
 255                return _("deleted by them:");
 256        case 4:
 257                return _("added by them:");
 258        case 5:
 259                return _("deleted by us:");
 260        case 6:
 261                return _("both added:");
 262        case 7:
 263                return _("both modified:");
 264        default:
 265                die(_("bug: unhandled unmerged status %x"), stagemask);
 266        }
 267}
 268
 269static const char *wt_status_diff_status_string(int status)
 270{
 271        switch (status) {
 272        case DIFF_STATUS_ADDED:
 273                return _("new file:");
 274        case DIFF_STATUS_COPIED:
 275                return _("copied:");
 276        case DIFF_STATUS_DELETED:
 277                return _("deleted:");
 278        case DIFF_STATUS_MODIFIED:
 279                return _("modified:");
 280        case DIFF_STATUS_RENAMED:
 281                return _("renamed:");
 282        case DIFF_STATUS_TYPE_CHANGED:
 283                return _("typechange:");
 284        case DIFF_STATUS_UNKNOWN:
 285                return _("unknown:");
 286        case DIFF_STATUS_UNMERGED:
 287                return _("unmerged:");
 288        default:
 289                return NULL;
 290        }
 291}
 292
 293static int maxwidth(const char *(*label)(int), int minval, int maxval)
 294{
 295        int result = 0, i;
 296
 297        for (i = minval; i <= maxval; i++) {
 298                const char *s = label(i);
 299                int len = s ? utf8_strwidth(s) : 0;
 300                if (len > result)
 301                        result = len;
 302        }
 303        return result;
 304}
 305
 306static void wt_status_print_unmerged_data(struct wt_status *s,
 307                                          struct string_list_item *it)
 308{
 309        const char *c = color(WT_STATUS_UNMERGED, s);
 310        struct wt_status_change_data *d = it->util;
 311        struct strbuf onebuf = STRBUF_INIT;
 312        static char *padding;
 313        static int label_width;
 314        const char *one, *how;
 315        int len;
 316
 317        if (!padding) {
 318                label_width = maxwidth(wt_status_unmerged_status_string, 1, 7);
 319                label_width += strlen(" ");
 320                padding = xmallocz(label_width);
 321                memset(padding, ' ', label_width);
 322        }
 323
 324        one = quote_path(it->string, s->prefix, &onebuf);
 325        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 326
 327        how = wt_status_unmerged_status_string(d->stagemask);
 328        len = label_width - utf8_strwidth(how);
 329        status_printf_more(s, c, "%s%.*s%s\n", how, len, padding, one);
 330        strbuf_release(&onebuf);
 331}
 332
 333static void wt_status_print_change_data(struct wt_status *s,
 334                                        int change_type,
 335                                        struct string_list_item *it)
 336{
 337        struct wt_status_change_data *d = it->util;
 338        const char *c = color(change_type, s);
 339        int status;
 340        char *one_name;
 341        char *two_name;
 342        const char *one, *two;
 343        struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
 344        struct strbuf extra = STRBUF_INIT;
 345        static char *padding;
 346        static int label_width;
 347        const char *what;
 348        int len;
 349
 350        if (!padding) {
 351                /* If DIFF_STATUS_* uses outside the range [A..Z], we're in trouble */
 352                label_width = maxwidth(wt_status_diff_status_string, 'A', 'Z');
 353                label_width += strlen(" ");
 354                padding = xmallocz(label_width);
 355                memset(padding, ' ', label_width);
 356        }
 357
 358        one_name = two_name = it->string;
 359        switch (change_type) {
 360        case WT_STATUS_UPDATED:
 361                status = d->index_status;
 362                if (d->head_path)
 363                        one_name = d->head_path;
 364                break;
 365        case WT_STATUS_CHANGED:
 366                if (d->new_submodule_commits || d->dirty_submodule) {
 367                        strbuf_addstr(&extra, " (");
 368                        if (d->new_submodule_commits)
 369                                strbuf_addf(&extra, _("new commits, "));
 370                        if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
 371                                strbuf_addf(&extra, _("modified content, "));
 372                        if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
 373                                strbuf_addf(&extra, _("untracked content, "));
 374                        strbuf_setlen(&extra, extra.len - 2);
 375                        strbuf_addch(&extra, ')');
 376                }
 377                status = d->worktree_status;
 378                break;
 379        default:
 380                die("BUG: unhandled change_type %d in wt_status_print_change_data",
 381                    change_type);
 382        }
 383
 384        one = quote_path(one_name, s->prefix, &onebuf);
 385        two = quote_path(two_name, s->prefix, &twobuf);
 386
 387        status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 388        what = wt_status_diff_status_string(status);
 389        if (!what)
 390                die(_("bug: unhandled diff status %c"), status);
 391        len = label_width - utf8_strwidth(what);
 392        assert(len >= 0);
 393        if (status == DIFF_STATUS_COPIED || status == DIFF_STATUS_RENAMED)
 394                status_printf_more(s, c, "%s%.*s%s -> %s",
 395                                   what, len, padding, one, two);
 396        else
 397                status_printf_more(s, c, "%s%.*s%s",
 398                                   what, len, padding, one);
 399        if (extra.len) {
 400                status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
 401                strbuf_release(&extra);
 402        }
 403        status_printf_more(s, GIT_COLOR_NORMAL, "\n");
 404        strbuf_release(&onebuf);
 405        strbuf_release(&twobuf);
 406}
 407
 408static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
 409                                         struct diff_options *options,
 410                                         void *data)
 411{
 412        struct wt_status *s = data;
 413        int i;
 414
 415        if (!q->nr)
 416                return;
 417        s->workdir_dirty = 1;
 418        for (i = 0; i < q->nr; i++) {
 419                struct diff_filepair *p;
 420                struct string_list_item *it;
 421                struct wt_status_change_data *d;
 422
 423                p = q->queue[i];
 424                it = string_list_insert(&s->change, p->one->path);
 425                d = it->util;
 426                if (!d) {
 427                        d = xcalloc(1, sizeof(*d));
 428                        it->util = d;
 429                }
 430                if (!d->worktree_status)
 431                        d->worktree_status = p->status;
 432                d->dirty_submodule = p->two->dirty_submodule;
 433                if (S_ISGITLINK(p->two->mode))
 434                        d->new_submodule_commits = !!hashcmp(p->one->sha1, p->two->sha1);
 435        }
 436}
 437
 438static int unmerged_mask(const char *path)
 439{
 440        int pos, mask;
 441        const struct cache_entry *ce;
 442
 443        pos = cache_name_pos(path, strlen(path));
 444        if (0 <= pos)
 445                return 0;
 446
 447        mask = 0;
 448        pos = -pos-1;
 449        while (pos < active_nr) {
 450                ce = active_cache[pos++];
 451                if (strcmp(ce->name, path) || !ce_stage(ce))
 452                        break;
 453                mask |= (1 << (ce_stage(ce) - 1));
 454        }
 455        return mask;
 456}
 457
 458static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
 459                                         struct diff_options *options,
 460                                         void *data)
 461{
 462        struct wt_status *s = data;
 463        int i;
 464
 465        for (i = 0; i < q->nr; i++) {
 466                struct diff_filepair *p;
 467                struct string_list_item *it;
 468                struct wt_status_change_data *d;
 469
 470                p = q->queue[i];
 471                it = string_list_insert(&s->change, p->two->path);
 472                d = it->util;
 473                if (!d) {
 474                        d = xcalloc(1, sizeof(*d));
 475                        it->util = d;
 476                }
 477                if (!d->index_status)
 478                        d->index_status = p->status;
 479                switch (p->status) {
 480                case DIFF_STATUS_COPIED:
 481                case DIFF_STATUS_RENAMED:
 482                        d->head_path = xstrdup(p->one->path);
 483                        break;
 484                case DIFF_STATUS_UNMERGED:
 485                        d->stagemask = unmerged_mask(p->two->path);
 486                        break;
 487                }
 488        }
 489}
 490
 491static void wt_status_collect_changes_worktree(struct wt_status *s)
 492{
 493        struct rev_info rev;
 494
 495        init_revisions(&rev, NULL);
 496        setup_revisions(0, NULL, &rev, NULL);
 497        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 498        DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
 499        if (!s->show_untracked_files)
 500                DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
 501        if (s->ignore_submodule_arg) {
 502                DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 503                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 504        }
 505        rev.diffopt.format_callback = wt_status_collect_changed_cb;
 506        rev.diffopt.format_callback_data = s;
 507        copy_pathspec(&rev.prune_data, &s->pathspec);
 508        run_diff_files(&rev, 0);
 509}
 510
 511static void wt_status_collect_changes_index(struct wt_status *s)
 512{
 513        struct rev_info rev;
 514        struct setup_revision_opt opt;
 515
 516        init_revisions(&rev, NULL);
 517        memset(&opt, 0, sizeof(opt));
 518        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 519        setup_revisions(0, NULL, &rev, &opt);
 520
 521        DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
 522        if (s->ignore_submodule_arg) {
 523                handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
 524        } else {
 525                /*
 526                 * Unless the user did explicitly request a submodule ignore
 527                 * mode by passing a command line option we do not ignore any
 528                 * changed submodule SHA-1s when comparing index and HEAD, no
 529                 * matter what is configured. Otherwise the user won't be
 530                 * shown any submodules she manually added (and which are
 531                 * staged to be committed), which would be really confusing.
 532                 */
 533                handle_ignore_submodules_arg(&rev.diffopt, "dirty");
 534        }
 535
 536        rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 537        rev.diffopt.format_callback = wt_status_collect_updated_cb;
 538        rev.diffopt.format_callback_data = s;
 539        rev.diffopt.detect_rename = 1;
 540        rev.diffopt.rename_limit = 200;
 541        rev.diffopt.break_opt = 0;
 542        copy_pathspec(&rev.prune_data, &s->pathspec);
 543        run_diff_index(&rev, 1);
 544}
 545
 546static void wt_status_collect_changes_initial(struct wt_status *s)
 547{
 548        int i;
 549
 550        for (i = 0; i < active_nr; i++) {
 551                struct string_list_item *it;
 552                struct wt_status_change_data *d;
 553                const struct cache_entry *ce = active_cache[i];
 554
 555                if (!ce_path_match(ce, &s->pathspec, NULL))
 556                        continue;
 557                it = string_list_insert(&s->change, ce->name);
 558                d = it->util;
 559                if (!d) {
 560                        d = xcalloc(1, sizeof(*d));
 561                        it->util = d;
 562                }
 563                if (ce_stage(ce)) {
 564                        d->index_status = DIFF_STATUS_UNMERGED;
 565                        d->stagemask |= (1 << (ce_stage(ce) - 1));
 566                }
 567                else
 568                        d->index_status = DIFF_STATUS_ADDED;
 569        }
 570}
 571
 572static void wt_status_collect_untracked(struct wt_status *s)
 573{
 574        int i;
 575        struct dir_struct dir;
 576        uint64_t t_begin = getnanotime();
 577
 578        if (!s->show_untracked_files)
 579                return;
 580
 581        memset(&dir, 0, sizeof(dir));
 582        if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
 583                dir.flags |=
 584                        DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 585        if (s->show_ignored_files)
 586                dir.flags |= DIR_SHOW_IGNORED_TOO;
 587        else
 588                dir.untracked = the_index.untracked;
 589        setup_standard_excludes(&dir);
 590
 591        fill_directory(&dir, &s->pathspec);
 592
 593        for (i = 0; i < dir.nr; i++) {
 594                struct dir_entry *ent = dir.entries[i];
 595                if (cache_name_is_other(ent->name, ent->len) &&
 596                    dir_path_match(ent, &s->pathspec, 0, NULL))
 597                        string_list_insert(&s->untracked, ent->name);
 598                free(ent);
 599        }
 600
 601        for (i = 0; i < dir.ignored_nr; i++) {
 602                struct dir_entry *ent = dir.ignored[i];
 603                if (cache_name_is_other(ent->name, ent->len) &&
 604                    dir_path_match(ent, &s->pathspec, 0, NULL))
 605                        string_list_insert(&s->ignored, ent->name);
 606                free(ent);
 607        }
 608
 609        free(dir.entries);
 610        free(dir.ignored);
 611        clear_directory(&dir);
 612
 613        if (advice_status_u_option)
 614                s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
 615}
 616
 617void wt_status_collect(struct wt_status *s)
 618{
 619        wt_status_collect_changes_worktree(s);
 620
 621        if (s->is_initial)
 622                wt_status_collect_changes_initial(s);
 623        else
 624                wt_status_collect_changes_index(s);
 625        wt_status_collect_untracked(s);
 626}
 627
 628static void wt_status_print_unmerged(struct wt_status *s)
 629{
 630        int shown_header = 0;
 631        int i;
 632
 633        for (i = 0; i < s->change.nr; i++) {
 634                struct wt_status_change_data *d;
 635                struct string_list_item *it;
 636                it = &(s->change.items[i]);
 637                d = it->util;
 638                if (!d->stagemask)
 639                        continue;
 640                if (!shown_header) {
 641                        wt_status_print_unmerged_header(s);
 642                        shown_header = 1;
 643                }
 644                wt_status_print_unmerged_data(s, it);
 645        }
 646        if (shown_header)
 647                wt_status_print_trailer(s);
 648
 649}
 650
 651static void wt_status_print_updated(struct wt_status *s)
 652{
 653        int shown_header = 0;
 654        int i;
 655
 656        for (i = 0; i < s->change.nr; i++) {
 657                struct wt_status_change_data *d;
 658                struct string_list_item *it;
 659                it = &(s->change.items[i]);
 660                d = it->util;
 661                if (!d->index_status ||
 662                    d->index_status == DIFF_STATUS_UNMERGED)
 663                        continue;
 664                if (!shown_header) {
 665                        wt_status_print_cached_header(s);
 666                        s->commitable = 1;
 667                        shown_header = 1;
 668                }
 669                wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
 670        }
 671        if (shown_header)
 672                wt_status_print_trailer(s);
 673}
 674
 675/*
 676 * -1 : has delete
 677 *  0 : no change
 678 *  1 : some change but no delete
 679 */
 680static int wt_status_check_worktree_changes(struct wt_status *s,
 681                                             int *dirty_submodules)
 682{
 683        int i;
 684        int changes = 0;
 685
 686        *dirty_submodules = 0;
 687
 688        for (i = 0; i < s->change.nr; i++) {
 689                struct wt_status_change_data *d;
 690                d = s->change.items[i].util;
 691                if (!d->worktree_status ||
 692                    d->worktree_status == DIFF_STATUS_UNMERGED)
 693                        continue;
 694                if (!changes)
 695                        changes = 1;
 696                if (d->dirty_submodule)
 697                        *dirty_submodules = 1;
 698                if (d->worktree_status == DIFF_STATUS_DELETED)
 699                        changes = -1;
 700        }
 701        return changes;
 702}
 703
 704static void wt_status_print_changed(struct wt_status *s)
 705{
 706        int i, dirty_submodules;
 707        int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
 708
 709        if (!worktree_changes)
 710                return;
 711
 712        wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
 713
 714        for (i = 0; i < s->change.nr; i++) {
 715                struct wt_status_change_data *d;
 716                struct string_list_item *it;
 717                it = &(s->change.items[i]);
 718                d = it->util;
 719                if (!d->worktree_status ||
 720                    d->worktree_status == DIFF_STATUS_UNMERGED)
 721                        continue;
 722                wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
 723        }
 724        wt_status_print_trailer(s);
 725}
 726
 727static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
 728{
 729        struct child_process sm_summary = CHILD_PROCESS_INIT;
 730        struct strbuf cmd_stdout = STRBUF_INIT;
 731        struct strbuf summary = STRBUF_INIT;
 732        char *summary_content;
 733
 734        argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
 735                         s->index_file);
 736
 737        argv_array_push(&sm_summary.args, "submodule");
 738        argv_array_push(&sm_summary.args, "summary");
 739        argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
 740        argv_array_push(&sm_summary.args, "--for-status");
 741        argv_array_push(&sm_summary.args, "--summary-limit");
 742        argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
 743        if (!uncommitted)
 744                argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
 745
 746        sm_summary.git_cmd = 1;
 747        sm_summary.no_stdin = 1;
 748
 749        capture_command(&sm_summary, &cmd_stdout, 1024);
 750
 751        /* prepend header, only if there's an actual output */
 752        if (cmd_stdout.len) {
 753                if (uncommitted)
 754                        strbuf_addstr(&summary, _("Submodules changed but not updated:"));
 755                else
 756                        strbuf_addstr(&summary, _("Submodule changes to be committed:"));
 757                strbuf_addstr(&summary, "\n\n");
 758        }
 759        strbuf_addbuf(&summary, &cmd_stdout);
 760        strbuf_release(&cmd_stdout);
 761
 762        if (s->display_comment_prefix) {
 763                size_t len;
 764                summary_content = strbuf_detach(&summary, &len);
 765                strbuf_add_commented_lines(&summary, summary_content, len);
 766                free(summary_content);
 767        }
 768
 769        fputs(summary.buf, s->fp);
 770        strbuf_release(&summary);
 771}
 772
 773static void wt_status_print_other(struct wt_status *s,
 774                                  struct string_list *l,
 775                                  const char *what,
 776                                  const char *how)
 777{
 778        int i;
 779        struct strbuf buf = STRBUF_INIT;
 780        static struct string_list output = STRING_LIST_INIT_DUP;
 781        struct column_options copts;
 782
 783        if (!l->nr)
 784                return;
 785
 786        wt_status_print_other_header(s, what, how);
 787
 788        for (i = 0; i < l->nr; i++) {
 789                struct string_list_item *it;
 790                const char *path;
 791                it = &(l->items[i]);
 792                path = quote_path(it->string, s->prefix, &buf);
 793                if (column_active(s->colopts)) {
 794                        string_list_append(&output, path);
 795                        continue;
 796                }
 797                status_printf(s, color(WT_STATUS_HEADER, s), "\t");
 798                status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
 799                                   "%s\n", path);
 800        }
 801
 802        strbuf_release(&buf);
 803        if (!column_active(s->colopts))
 804                goto conclude;
 805
 806        strbuf_addf(&buf, "%s%s\t%s",
 807                    color(WT_STATUS_HEADER, s),
 808                    s->display_comment_prefix ? "#" : "",
 809                    color(WT_STATUS_UNTRACKED, s));
 810        memset(&copts, 0, sizeof(copts));
 811        copts.padding = 1;
 812        copts.indent = buf.buf;
 813        if (want_color(s->use_color))
 814                copts.nl = GIT_COLOR_RESET "\n";
 815        print_columns(&output, s->colopts, &copts);
 816        string_list_clear(&output, 0);
 817        strbuf_release(&buf);
 818conclude:
 819        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 820}
 821
 822void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
 823{
 824        const char *p;
 825        struct strbuf pattern = STRBUF_INIT;
 826
 827        strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
 828        if (starts_with(buf->buf, pattern.buf + 1))
 829                strbuf_setlen(buf, 0);
 830        else if ((p = strstr(buf->buf, pattern.buf)))
 831                strbuf_setlen(buf, p - buf->buf + 1);
 832        strbuf_release(&pattern);
 833}
 834
 835void wt_status_add_cut_line(FILE *fp)
 836{
 837        const char *explanation = _("Do not touch the line above.\nEverything below will be removed.");
 838        struct strbuf buf = STRBUF_INIT;
 839
 840        fprintf(fp, "%c %s", comment_line_char, cut_line);
 841        strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
 842        fputs(buf.buf, fp);
 843        strbuf_release(&buf);
 844}
 845
 846static void wt_status_print_verbose(struct wt_status *s)
 847{
 848        struct rev_info rev;
 849        struct setup_revision_opt opt;
 850        int dirty_submodules;
 851        const char *c = color(WT_STATUS_HEADER, s);
 852
 853        init_revisions(&rev, NULL);
 854        DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
 855
 856        memset(&opt, 0, sizeof(opt));
 857        opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
 858        setup_revisions(0, NULL, &rev, &opt);
 859
 860        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 861        rev.diffopt.detect_rename = 1;
 862        rev.diffopt.file = s->fp;
 863        rev.diffopt.close_file = 0;
 864        /*
 865         * If we're not going to stdout, then we definitely don't
 866         * want color, since we are going to the commit message
 867         * file (and even the "auto" setting won't work, since it
 868         * will have checked isatty on stdout). But we then do want
 869         * to insert the scissor line here to reliably remove the
 870         * diff before committing.
 871         */
 872        if (s->fp != stdout) {
 873                rev.diffopt.use_color = 0;
 874                wt_status_add_cut_line(s->fp);
 875        }
 876        if (s->verbose > 1 && s->commitable) {
 877                /* print_updated() printed a header, so do we */
 878                if (s->fp != stdout)
 879                        wt_status_print_trailer(s);
 880                status_printf_ln(s, c, _("Changes to be committed:"));
 881                rev.diffopt.a_prefix = "c/";
 882                rev.diffopt.b_prefix = "i/";
 883        } /* else use prefix as per user config */
 884        run_diff_index(&rev, 1);
 885        if (s->verbose > 1 &&
 886            wt_status_check_worktree_changes(s, &dirty_submodules)) {
 887                status_printf_ln(s, c,
 888                        "--------------------------------------------------");
 889                status_printf_ln(s, c, _("Changes not staged for commit:"));
 890                setup_work_tree();
 891                rev.diffopt.a_prefix = "i/";
 892                rev.diffopt.b_prefix = "w/";
 893                run_diff_files(&rev, 0);
 894        }
 895}
 896
 897static void wt_status_print_tracking(struct wt_status *s)
 898{
 899        struct strbuf sb = STRBUF_INIT;
 900        const char *cp, *ep, *branch_name;
 901        struct branch *branch;
 902        char comment_line_string[3];
 903        int i;
 904
 905        assert(s->branch && !s->is_initial);
 906        if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
 907                return;
 908        branch = branch_get(branch_name);
 909        if (!format_tracking_info(branch, &sb))
 910                return;
 911
 912        i = 0;
 913        if (s->display_comment_prefix) {
 914                comment_line_string[i++] = comment_line_char;
 915                comment_line_string[i++] = ' ';
 916        }
 917        comment_line_string[i] = '\0';
 918
 919        for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
 920                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
 921                                 "%s%.*s", comment_line_string,
 922                                 (int)(ep - cp), cp);
 923        if (s->display_comment_prefix)
 924                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
 925                                 comment_line_char);
 926        else
 927                fputs("", s->fp);
 928}
 929
 930static int has_unmerged(struct wt_status *s)
 931{
 932        int i;
 933
 934        for (i = 0; i < s->change.nr; i++) {
 935                struct wt_status_change_data *d;
 936                d = s->change.items[i].util;
 937                if (d->stagemask)
 938                        return 1;
 939        }
 940        return 0;
 941}
 942
 943static void show_merge_in_progress(struct wt_status *s,
 944                                struct wt_status_state *state,
 945                                const char *color)
 946{
 947        if (has_unmerged(s)) {
 948                status_printf_ln(s, color, _("You have unmerged paths."));
 949                if (s->hints)
 950                        status_printf_ln(s, color,
 951                                _("  (fix conflicts and run \"git commit\")"));
 952        } else {
 953                status_printf_ln(s, color,
 954                        _("All conflicts fixed but you are still merging."));
 955                if (s->hints)
 956                        status_printf_ln(s, color,
 957                                _("  (use \"git commit\" to conclude merge)"));
 958        }
 959        wt_status_print_trailer(s);
 960}
 961
 962static void show_am_in_progress(struct wt_status *s,
 963                                struct wt_status_state *state,
 964                                const char *color)
 965{
 966        status_printf_ln(s, color,
 967                _("You are in the middle of an am session."));
 968        if (state->am_empty_patch)
 969                status_printf_ln(s, color,
 970                        _("The current patch is empty."));
 971        if (s->hints) {
 972                if (!state->am_empty_patch)
 973                        status_printf_ln(s, color,
 974                                _("  (fix conflicts and then run \"git am --continue\")"));
 975                status_printf_ln(s, color,
 976                        _("  (use \"git am --skip\" to skip this patch)"));
 977                status_printf_ln(s, color,
 978                        _("  (use \"git am --abort\" to restore the original branch)"));
 979        }
 980        wt_status_print_trailer(s);
 981}
 982
 983static char *read_line_from_git_path(const char *filename)
 984{
 985        struct strbuf buf = STRBUF_INIT;
 986        FILE *fp = fopen(git_path("%s", filename), "r");
 987        if (!fp) {
 988                strbuf_release(&buf);
 989                return NULL;
 990        }
 991        strbuf_getline_lf(&buf, fp);
 992        if (!fclose(fp)) {
 993                return strbuf_detach(&buf, NULL);
 994        } else {
 995                strbuf_release(&buf);
 996                return NULL;
 997        }
 998}
 999
1000static int split_commit_in_progress(struct wt_status *s)
1001{
1002        int split_in_progress = 0;
1003        char *head = read_line_from_git_path("HEAD");
1004        char *orig_head = read_line_from_git_path("ORIG_HEAD");
1005        char *rebase_amend = read_line_from_git_path("rebase-merge/amend");
1006        char *rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1007
1008        if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
1009            !s->branch || strcmp(s->branch, "HEAD"))
1010                return split_in_progress;
1011
1012        if (!strcmp(rebase_amend, rebase_orig_head)) {
1013                if (strcmp(head, rebase_amend))
1014                        split_in_progress = 1;
1015        } else if (strcmp(orig_head, rebase_orig_head)) {
1016                split_in_progress = 1;
1017        }
1018
1019        if (!s->amend && !s->nowarn && !s->workdir_dirty)
1020                split_in_progress = 0;
1021
1022        free(head);
1023        free(orig_head);
1024        free(rebase_amend);
1025        free(rebase_orig_head);
1026        return split_in_progress;
1027}
1028
1029/*
1030 * Turn
1031 * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1032 * into
1033 * "pick d6a2f03 some message"
1034 *
1035 * The function assumes that the line does not contain useless spaces
1036 * before or after the command.
1037 */
1038static void abbrev_sha1_in_line(struct strbuf *line)
1039{
1040        struct strbuf **split;
1041        int i;
1042
1043        if (starts_with(line->buf, "exec ") ||
1044            starts_with(line->buf, "x "))
1045                return;
1046
1047        split = strbuf_split_max(line, ' ', 3);
1048        if (split[0] && split[1]) {
1049                unsigned char sha1[20];
1050                const char *abbrev;
1051
1052                /*
1053                 * strbuf_split_max left a space. Trim it and re-add
1054                 * it after abbreviation.
1055                 */
1056                strbuf_trim(split[1]);
1057                if (!get_sha1(split[1]->buf, sha1)) {
1058                        abbrev = find_unique_abbrev(sha1, DEFAULT_ABBREV);
1059                        strbuf_reset(split[1]);
1060                        strbuf_addf(split[1], "%s ", abbrev);
1061                        strbuf_reset(line);
1062                        for (i = 0; split[i]; i++)
1063                                strbuf_addf(line, "%s", split[i]->buf);
1064                }
1065        }
1066        strbuf_list_free(split);
1067}
1068
1069static void read_rebase_todolist(const char *fname, struct string_list *lines)
1070{
1071        struct strbuf line = STRBUF_INIT;
1072        FILE *f = fopen(git_path("%s", fname), "r");
1073
1074        if (!f)
1075                die_errno("Could not open file %s for reading",
1076                          git_path("%s", fname));
1077        while (!strbuf_getline_lf(&line, f)) {
1078                if (line.len && line.buf[0] == comment_line_char)
1079                        continue;
1080                strbuf_trim(&line);
1081                if (!line.len)
1082                        continue;
1083                abbrev_sha1_in_line(&line);
1084                string_list_append(lines, line.buf);
1085        }
1086}
1087
1088static void show_rebase_information(struct wt_status *s,
1089                                        struct wt_status_state *state,
1090                                        const char *color)
1091{
1092        if (state->rebase_interactive_in_progress) {
1093                int i;
1094                int nr_lines_to_show = 2;
1095
1096                struct string_list have_done = STRING_LIST_INIT_DUP;
1097                struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1098
1099                read_rebase_todolist("rebase-merge/done", &have_done);
1100                read_rebase_todolist("rebase-merge/git-rebase-todo", &yet_to_do);
1101
1102                if (have_done.nr == 0)
1103                        status_printf_ln(s, color, _("No commands done."));
1104                else {
1105                        status_printf_ln(s, color,
1106                                Q_("Last command done (%d command done):",
1107                                        "Last commands done (%d commands done):",
1108                                        have_done.nr),
1109                                have_done.nr);
1110                        for (i = (have_done.nr > nr_lines_to_show)
1111                                ? have_done.nr - nr_lines_to_show : 0;
1112                                i < have_done.nr;
1113                                i++)
1114                                status_printf_ln(s, color, "   %s", have_done.items[i].string);
1115                        if (have_done.nr > nr_lines_to_show && s->hints)
1116                                status_printf_ln(s, color,
1117                                        _("  (see more in file %s)"), git_path("rebase-merge/done"));
1118                }
1119
1120                if (yet_to_do.nr == 0)
1121                        status_printf_ln(s, color,
1122                                         _("No commands remaining."));
1123                else {
1124                        status_printf_ln(s, color,
1125                                Q_("Next command to do (%d remaining command):",
1126                                        "Next commands to do (%d remaining commands):",
1127                                        yet_to_do.nr),
1128                                yet_to_do.nr);
1129                        for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1130                                status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1131                        if (s->hints)
1132                                status_printf_ln(s, color,
1133                                        _("  (use \"git rebase --edit-todo\" to view and edit)"));
1134                }
1135                string_list_clear(&yet_to_do, 0);
1136                string_list_clear(&have_done, 0);
1137        }
1138}
1139
1140static void print_rebase_state(struct wt_status *s,
1141                                struct wt_status_state *state,
1142                                const char *color)
1143{
1144        if (state->branch)
1145                status_printf_ln(s, color,
1146                                 _("You are currently rebasing branch '%s' on '%s'."),
1147                                 state->branch,
1148                                 state->onto);
1149        else
1150                status_printf_ln(s, color,
1151                                 _("You are currently rebasing."));
1152}
1153
1154static void show_rebase_in_progress(struct wt_status *s,
1155                                struct wt_status_state *state,
1156                                const char *color)
1157{
1158        struct stat st;
1159
1160        show_rebase_information(s, state, color);
1161        if (has_unmerged(s)) {
1162                print_rebase_state(s, state, color);
1163                if (s->hints) {
1164                        status_printf_ln(s, color,
1165                                _("  (fix conflicts and then run \"git rebase --continue\")"));
1166                        status_printf_ln(s, color,
1167                                _("  (use \"git rebase --skip\" to skip this patch)"));
1168                        status_printf_ln(s, color,
1169                                _("  (use \"git rebase --abort\" to check out the original branch)"));
1170                }
1171        } else if (state->rebase_in_progress || !stat(git_path_merge_msg(), &st)) {
1172                print_rebase_state(s, state, color);
1173                if (s->hints)
1174                        status_printf_ln(s, color,
1175                                _("  (all conflicts fixed: run \"git rebase --continue\")"));
1176        } else if (split_commit_in_progress(s)) {
1177                if (state->branch)
1178                        status_printf_ln(s, color,
1179                                         _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1180                                         state->branch,
1181                                         state->onto);
1182                else
1183                        status_printf_ln(s, color,
1184                                         _("You are currently splitting a commit during a rebase."));
1185                if (s->hints)
1186                        status_printf_ln(s, color,
1187                                _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1188        } else {
1189                if (state->branch)
1190                        status_printf_ln(s, color,
1191                                         _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1192                                         state->branch,
1193                                         state->onto);
1194                else
1195                        status_printf_ln(s, color,
1196                                         _("You are currently editing a commit during a rebase."));
1197                if (s->hints && !s->amend) {
1198                        status_printf_ln(s, color,
1199                                _("  (use \"git commit --amend\" to amend the current commit)"));
1200                        status_printf_ln(s, color,
1201                                _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1202                }
1203        }
1204        wt_status_print_trailer(s);
1205}
1206
1207static void show_cherry_pick_in_progress(struct wt_status *s,
1208                                        struct wt_status_state *state,
1209                                        const char *color)
1210{
1211        status_printf_ln(s, color, _("You are currently cherry-picking commit %s."),
1212                        find_unique_abbrev(state->cherry_pick_head_sha1, DEFAULT_ABBREV));
1213        if (s->hints) {
1214                if (has_unmerged(s))
1215                        status_printf_ln(s, color,
1216                                _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1217                else
1218                        status_printf_ln(s, color,
1219                                _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1220                status_printf_ln(s, color,
1221                        _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1222        }
1223        wt_status_print_trailer(s);
1224}
1225
1226static void show_revert_in_progress(struct wt_status *s,
1227                                        struct wt_status_state *state,
1228                                        const char *color)
1229{
1230        status_printf_ln(s, color, _("You are currently reverting commit %s."),
1231                         find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
1232        if (s->hints) {
1233                if (has_unmerged(s))
1234                        status_printf_ln(s, color,
1235                                _("  (fix conflicts and run \"git revert --continue\")"));
1236                else
1237                        status_printf_ln(s, color,
1238                                _("  (all conflicts fixed: run \"git revert --continue\")"));
1239                status_printf_ln(s, color,
1240                        _("  (use \"git revert --abort\" to cancel the revert operation)"));
1241        }
1242        wt_status_print_trailer(s);
1243}
1244
1245static void show_bisect_in_progress(struct wt_status *s,
1246                                struct wt_status_state *state,
1247                                const char *color)
1248{
1249        if (state->branch)
1250                status_printf_ln(s, color,
1251                                 _("You are currently bisecting, started from branch '%s'."),
1252                                 state->branch);
1253        else
1254                status_printf_ln(s, color,
1255                                 _("You are currently bisecting."));
1256        if (s->hints)
1257                status_printf_ln(s, color,
1258                        _("  (use \"git bisect reset\" to get back to the original branch)"));
1259        wt_status_print_trailer(s);
1260}
1261
1262/*
1263 * Extract branch information from rebase/bisect
1264 */
1265static char *read_and_strip_branch(const char *path)
1266{
1267        struct strbuf sb = STRBUF_INIT;
1268        unsigned char sha1[20];
1269        const char *branch_name;
1270
1271        if (strbuf_read_file(&sb, git_path("%s", path), 0) <= 0)
1272                goto got_nothing;
1273
1274        while (sb.len && sb.buf[sb.len - 1] == '\n')
1275                strbuf_setlen(&sb, sb.len - 1);
1276        if (!sb.len)
1277                goto got_nothing;
1278        if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1279                strbuf_remove(&sb, 0, branch_name - sb.buf);
1280        else if (starts_with(sb.buf, "refs/"))
1281                ;
1282        else if (!get_sha1_hex(sb.buf, sha1)) {
1283                const char *abbrev;
1284                abbrev = find_unique_abbrev(sha1, DEFAULT_ABBREV);
1285                strbuf_reset(&sb);
1286                strbuf_addstr(&sb, abbrev);
1287        } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1288                goto got_nothing;
1289        else                    /* bisect */
1290                ;
1291        return strbuf_detach(&sb, NULL);
1292
1293got_nothing:
1294        strbuf_release(&sb);
1295        return NULL;
1296}
1297
1298struct grab_1st_switch_cbdata {
1299        struct strbuf buf;
1300        unsigned char nsha1[20];
1301};
1302
1303static int grab_1st_switch(unsigned char *osha1, unsigned char *nsha1,
1304                           const char *email, unsigned long timestamp, int tz,
1305                           const char *message, void *cb_data)
1306{
1307        struct grab_1st_switch_cbdata *cb = cb_data;
1308        const char *target = NULL, *end;
1309
1310        if (!skip_prefix(message, "checkout: moving from ", &message))
1311                return 0;
1312        target = strstr(message, " to ");
1313        if (!target)
1314                return 0;
1315        target += strlen(" to ");
1316        strbuf_reset(&cb->buf);
1317        hashcpy(cb->nsha1, nsha1);
1318        end = strchrnul(target, '\n');
1319        strbuf_add(&cb->buf, target, end - target);
1320        if (!strcmp(cb->buf.buf, "HEAD")) {
1321                /* HEAD is relative. Resolve it to the right reflog entry. */
1322                strbuf_reset(&cb->buf);
1323                strbuf_addstr(&cb->buf,
1324                              find_unique_abbrev(nsha1, DEFAULT_ABBREV));
1325        }
1326        return 1;
1327}
1328
1329static void wt_status_get_detached_from(struct wt_status_state *state)
1330{
1331        struct grab_1st_switch_cbdata cb;
1332        struct commit *commit;
1333        unsigned char sha1[20];
1334        char *ref = NULL;
1335
1336        strbuf_init(&cb.buf, 0);
1337        if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1338                strbuf_release(&cb.buf);
1339                return;
1340        }
1341
1342        if (dwim_ref(cb.buf.buf, cb.buf.len, sha1, &ref) == 1 &&
1343            /* sha1 is a commit? match without further lookup */
1344            (!hashcmp(cb.nsha1, sha1) ||
1345             /* perhaps sha1 is a tag, try to dereference to a commit */
1346             ((commit = lookup_commit_reference_gently(sha1, 1)) != NULL &&
1347              !hashcmp(cb.nsha1, commit->object.oid.hash)))) {
1348                const char *from = ref;
1349                if (!skip_prefix(from, "refs/tags/", &from))
1350                        skip_prefix(from, "refs/remotes/", &from);
1351                state->detached_from = xstrdup(from);
1352        } else
1353                state->detached_from =
1354                        xstrdup(find_unique_abbrev(cb.nsha1, DEFAULT_ABBREV));
1355        hashcpy(state->detached_sha1, cb.nsha1);
1356        state->detached_at = !get_sha1("HEAD", sha1) &&
1357                             !hashcmp(sha1, state->detached_sha1);
1358
1359        free(ref);
1360        strbuf_release(&cb.buf);
1361}
1362
1363void wt_status_get_state(struct wt_status_state *state,
1364                         int get_detached_from)
1365{
1366        struct stat st;
1367        unsigned char sha1[20];
1368
1369        if (!stat(git_path_merge_head(), &st)) {
1370                state->merge_in_progress = 1;
1371        } else if (!stat(git_path("rebase-apply"), &st)) {
1372                if (!stat(git_path("rebase-apply/applying"), &st)) {
1373                        state->am_in_progress = 1;
1374                        if (!stat(git_path("rebase-apply/patch"), &st) && !st.st_size)
1375                                state->am_empty_patch = 1;
1376                } else {
1377                        state->rebase_in_progress = 1;
1378                        state->branch = read_and_strip_branch("rebase-apply/head-name");
1379                        state->onto = read_and_strip_branch("rebase-apply/onto");
1380                }
1381        } else if (!stat(git_path("rebase-merge"), &st)) {
1382                if (!stat(git_path("rebase-merge/interactive"), &st))
1383                        state->rebase_interactive_in_progress = 1;
1384                else
1385                        state->rebase_in_progress = 1;
1386                state->branch = read_and_strip_branch("rebase-merge/head-name");
1387                state->onto = read_and_strip_branch("rebase-merge/onto");
1388        } else if (!stat(git_path_cherry_pick_head(), &st) &&
1389                        !get_sha1("CHERRY_PICK_HEAD", sha1)) {
1390                state->cherry_pick_in_progress = 1;
1391                hashcpy(state->cherry_pick_head_sha1, sha1);
1392        }
1393        if (!stat(git_path("BISECT_LOG"), &st)) {
1394                state->bisect_in_progress = 1;
1395                state->branch = read_and_strip_branch("BISECT_START");
1396        }
1397        if (!stat(git_path_revert_head(), &st) &&
1398            !get_sha1("REVERT_HEAD", sha1)) {
1399                state->revert_in_progress = 1;
1400                hashcpy(state->revert_head_sha1, sha1);
1401        }
1402
1403        if (get_detached_from)
1404                wt_status_get_detached_from(state);
1405}
1406
1407static void wt_status_print_state(struct wt_status *s,
1408                                  struct wt_status_state *state)
1409{
1410        const char *state_color = color(WT_STATUS_HEADER, s);
1411        if (state->merge_in_progress)
1412                show_merge_in_progress(s, state, state_color);
1413        else if (state->am_in_progress)
1414                show_am_in_progress(s, state, state_color);
1415        else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1416                show_rebase_in_progress(s, state, state_color);
1417        else if (state->cherry_pick_in_progress)
1418                show_cherry_pick_in_progress(s, state, state_color);
1419        else if (state->revert_in_progress)
1420                show_revert_in_progress(s, state, state_color);
1421        if (state->bisect_in_progress)
1422                show_bisect_in_progress(s, state, state_color);
1423}
1424
1425void wt_status_print(struct wt_status *s)
1426{
1427        const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1428        const char *branch_status_color = color(WT_STATUS_HEADER, s);
1429        struct wt_status_state state;
1430
1431        memset(&state, 0, sizeof(state));
1432        wt_status_get_state(&state,
1433                            s->branch && !strcmp(s->branch, "HEAD"));
1434
1435        if (s->branch) {
1436                const char *on_what = _("On branch ");
1437                const char *branch_name = s->branch;
1438                if (!strcmp(branch_name, "HEAD")) {
1439                        branch_status_color = color(WT_STATUS_NOBRANCH, s);
1440                        if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1441                                if (state.rebase_interactive_in_progress)
1442                                        on_what = _("interactive rebase in progress; onto ");
1443                                else
1444                                        on_what = _("rebase in progress; onto ");
1445                                branch_name = state.onto;
1446                        } else if (state.detached_from) {
1447                                branch_name = state.detached_from;
1448                                if (state.detached_at)
1449                                        on_what = _("HEAD detached at ");
1450                                else
1451                                        on_what = _("HEAD detached from ");
1452                        } else {
1453                                branch_name = "";
1454                                on_what = _("Not currently on any branch.");
1455                        }
1456                } else
1457                        skip_prefix(branch_name, "refs/heads/", &branch_name);
1458                status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1459                status_printf_more(s, branch_status_color, "%s", on_what);
1460                status_printf_more(s, branch_color, "%s\n", branch_name);
1461                if (!s->is_initial)
1462                        wt_status_print_tracking(s);
1463        }
1464
1465        wt_status_print_state(s, &state);
1466        free(state.branch);
1467        free(state.onto);
1468        free(state.detached_from);
1469
1470        if (s->is_initial) {
1471                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1472                status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
1473                status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1474        }
1475
1476        wt_status_print_updated(s);
1477        wt_status_print_unmerged(s);
1478        wt_status_print_changed(s);
1479        if (s->submodule_summary &&
1480            (!s->ignore_submodule_arg ||
1481             strcmp(s->ignore_submodule_arg, "all"))) {
1482                wt_status_print_submodule_summary(s, 0);  /* staged */
1483                wt_status_print_submodule_summary(s, 1);  /* unstaged */
1484        }
1485        if (s->show_untracked_files) {
1486                wt_status_print_other(s, &s->untracked, _("Untracked files"), "add");
1487                if (s->show_ignored_files)
1488                        wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1489                if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1490                        status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1491                        status_printf_ln(s, GIT_COLOR_NORMAL,
1492                                         _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1493                                           "may speed it up, but you have to be careful not to forget to add\n"
1494                                           "new files yourself (see 'git help status')."),
1495                                         s->untracked_in_ms / 1000.0);
1496                }
1497        } else if (s->commitable)
1498                status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1499                        s->hints
1500                        ? _(" (use -u option to show untracked files)") : "");
1501
1502        if (s->verbose)
1503                wt_status_print_verbose(s);
1504        if (!s->commitable) {
1505                if (s->amend)
1506                        status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1507                else if (s->nowarn)
1508                        ; /* nothing */
1509                else if (s->workdir_dirty) {
1510                        if (s->hints)
1511                                printf(_("no changes added to commit "
1512                                         "(use \"git add\" and/or \"git commit -a\")\n"));
1513                        else
1514                                printf(_("no changes added to commit\n"));
1515                } else if (s->untracked.nr) {
1516                        if (s->hints)
1517                                printf(_("nothing added to commit but untracked files "
1518                                         "present (use \"git add\" to track)\n"));
1519                        else
1520                                printf(_("nothing added to commit but untracked files present\n"));
1521                } else if (s->is_initial) {
1522                        if (s->hints)
1523                                printf(_("nothing to commit (create/copy files "
1524                                         "and use \"git add\" to track)\n"));
1525                        else
1526                                printf(_("nothing to commit\n"));
1527                } else if (!s->show_untracked_files) {
1528                        if (s->hints)
1529                                printf(_("nothing to commit (use -u to show untracked files)\n"));
1530                        else
1531                                printf(_("nothing to commit\n"));
1532                } else
1533                        printf(_("nothing to commit, working directory clean\n"));
1534        }
1535}
1536
1537static void wt_shortstatus_unmerged(struct string_list_item *it,
1538                           struct wt_status *s)
1539{
1540        struct wt_status_change_data *d = it->util;
1541        const char *how = "??";
1542
1543        switch (d->stagemask) {
1544        case 1: how = "DD"; break; /* both deleted */
1545        case 2: how = "AU"; break; /* added by us */
1546        case 3: how = "UD"; break; /* deleted by them */
1547        case 4: how = "UA"; break; /* added by them */
1548        case 5: how = "DU"; break; /* deleted by us */
1549        case 6: how = "AA"; break; /* both added */
1550        case 7: how = "UU"; break; /* both modified */
1551        }
1552        color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1553        if (s->null_termination) {
1554                fprintf(stdout, " %s%c", it->string, 0);
1555        } else {
1556                struct strbuf onebuf = STRBUF_INIT;
1557                const char *one;
1558                one = quote_path(it->string, s->prefix, &onebuf);
1559                printf(" %s\n", one);
1560                strbuf_release(&onebuf);
1561        }
1562}
1563
1564static void wt_shortstatus_status(struct string_list_item *it,
1565                         struct wt_status *s)
1566{
1567        struct wt_status_change_data *d = it->util;
1568
1569        if (d->index_status)
1570                color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1571        else
1572                putchar(' ');
1573        if (d->worktree_status)
1574                color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1575        else
1576                putchar(' ');
1577        putchar(' ');
1578        if (s->null_termination) {
1579                fprintf(stdout, "%s%c", it->string, 0);
1580                if (d->head_path)
1581                        fprintf(stdout, "%s%c", d->head_path, 0);
1582        } else {
1583                struct strbuf onebuf = STRBUF_INIT;
1584                const char *one;
1585                if (d->head_path) {
1586                        one = quote_path(d->head_path, s->prefix, &onebuf);
1587                        if (*one != '"' && strchr(one, ' ') != NULL) {
1588                                putchar('"');
1589                                strbuf_addch(&onebuf, '"');
1590                                one = onebuf.buf;
1591                        }
1592                        printf("%s -> ", one);
1593                        strbuf_release(&onebuf);
1594                }
1595                one = quote_path(it->string, s->prefix, &onebuf);
1596                if (*one != '"' && strchr(one, ' ') != NULL) {
1597                        putchar('"');
1598                        strbuf_addch(&onebuf, '"');
1599                        one = onebuf.buf;
1600                }
1601                printf("%s\n", one);
1602                strbuf_release(&onebuf);
1603        }
1604}
1605
1606static void wt_shortstatus_other(struct string_list_item *it,
1607                                 struct wt_status *s, const char *sign)
1608{
1609        if (s->null_termination) {
1610                fprintf(stdout, "%s %s%c", sign, it->string, 0);
1611        } else {
1612                struct strbuf onebuf = STRBUF_INIT;
1613                const char *one;
1614                one = quote_path(it->string, s->prefix, &onebuf);
1615                color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1616                printf(" %s\n", one);
1617                strbuf_release(&onebuf);
1618        }
1619}
1620
1621static void wt_shortstatus_print_tracking(struct wt_status *s)
1622{
1623        struct branch *branch;
1624        const char *header_color = color(WT_STATUS_HEADER, s);
1625        const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1626        const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1627
1628        const char *base;
1629        const char *branch_name;
1630        int num_ours, num_theirs;
1631        int upstream_is_gone = 0;
1632
1633        color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1634
1635        if (!s->branch)
1636                return;
1637        branch_name = s->branch;
1638
1639        if (s->is_initial)
1640                color_fprintf(s->fp, header_color, _("Initial commit on "));
1641
1642        if (!strcmp(s->branch, "HEAD")) {
1643                color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1644                              _("HEAD (no branch)"));
1645                goto conclude;
1646        }
1647
1648        skip_prefix(branch_name, "refs/heads/", &branch_name);
1649
1650        branch = branch_get(branch_name);
1651
1652        color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1653
1654        if (stat_tracking_info(branch, &num_ours, &num_theirs, &base) < 0) {
1655                if (!base)
1656                        goto conclude;
1657
1658                upstream_is_gone = 1;
1659        }
1660
1661        base = shorten_unambiguous_ref(base, 0);
1662        color_fprintf(s->fp, header_color, "...");
1663        color_fprintf(s->fp, branch_color_remote, "%s", base);
1664        free((char *)base);
1665
1666        if (!upstream_is_gone && !num_ours && !num_theirs)
1667                goto conclude;
1668
1669#define LABEL(string) (s->no_gettext ? (string) : _(string))
1670
1671        color_fprintf(s->fp, header_color, " [");
1672        if (upstream_is_gone) {
1673                color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1674        } else if (!num_ours) {
1675                color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1676                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1677        } else if (!num_theirs) {
1678                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1679                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1680        } else {
1681                color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1682                color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1683                color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1684                color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1685        }
1686
1687        color_fprintf(s->fp, header_color, "]");
1688 conclude:
1689        fputc(s->null_termination ? '\0' : '\n', s->fp);
1690}
1691
1692void wt_shortstatus_print(struct wt_status *s)
1693{
1694        int i;
1695
1696        if (s->show_branch)
1697                wt_shortstatus_print_tracking(s);
1698
1699        for (i = 0; i < s->change.nr; i++) {
1700                struct wt_status_change_data *d;
1701                struct string_list_item *it;
1702
1703                it = &(s->change.items[i]);
1704                d = it->util;
1705                if (d->stagemask)
1706                        wt_shortstatus_unmerged(it, s);
1707                else
1708                        wt_shortstatus_status(it, s);
1709        }
1710        for (i = 0; i < s->untracked.nr; i++) {
1711                struct string_list_item *it;
1712
1713                it = &(s->untracked.items[i]);
1714                wt_shortstatus_other(it, s, "??");
1715        }
1716        for (i = 0; i < s->ignored.nr; i++) {
1717                struct string_list_item *it;
1718
1719                it = &(s->ignored.items[i]);
1720                wt_shortstatus_other(it, s, "!!");
1721        }
1722}
1723
1724void wt_porcelain_print(struct wt_status *s)
1725{
1726        s->use_color = 0;
1727        s->relative_paths = 0;
1728        s->prefix = NULL;
1729        s->no_gettext = 1;
1730        wt_shortstatus_print(s);
1731}