Merge branch 'jk/perf-wo-git-dot-pm'
[git] / wt-status.c
1 #include "cache.h"
2 #include "wt-status.h"
3 #include "object.h"
4 #include "dir.h"
5 #include "commit.h"
6 #include "diff.h"
7 #include "revision.h"
8 #include "diffcore.h"
9 #include "quote.h"
10 #include "run-command.h"
11 #include "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 #include "lockfile.h"
20 #include "sequencer.h"
21
22 #define AB_DELAY_WARNING_IN_MS (2 * 1000)
23
24 static const char cut_line[] =
25 "------------------------ >8 ------------------------\n";
26
27 static char default_wt_status_colors[][COLOR_MAXLEN] = {
28         GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
29         GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
30         GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
31         GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
32         GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
33         GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
34         GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
35         GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
36         GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
37 };
38
39 static const char *color(int slot, struct wt_status *s)
40 {
41         const char *c = "";
42         if (want_color(s->use_color))
43                 c = s->color_palette[slot];
44         if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
45                 c = s->color_palette[WT_STATUS_HEADER];
46         return c;
47 }
48
49 static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
50                 const char *fmt, va_list ap, const char *trail)
51 {
52         struct strbuf sb = STRBUF_INIT;
53         struct strbuf linebuf = STRBUF_INIT;
54         const char *line, *eol;
55
56         strbuf_vaddf(&sb, fmt, ap);
57         if (!sb.len) {
58                 if (s->display_comment_prefix) {
59                         strbuf_addch(&sb, comment_line_char);
60                         if (!trail)
61                                 strbuf_addch(&sb, ' ');
62                 }
63                 color_print_strbuf(s->fp, color, &sb);
64                 if (trail)
65                         fprintf(s->fp, "%s", trail);
66                 strbuf_release(&sb);
67                 return;
68         }
69         for (line = sb.buf; *line; line = eol + 1) {
70                 eol = strchr(line, '\n');
71
72                 strbuf_reset(&linebuf);
73                 if (at_bol && s->display_comment_prefix) {
74                         strbuf_addch(&linebuf, comment_line_char);
75                         if (*line != '\n' && *line != '\t')
76                                 strbuf_addch(&linebuf, ' ');
77                 }
78                 if (eol)
79                         strbuf_add(&linebuf, line, eol - line);
80                 else
81                         strbuf_addstr(&linebuf, line);
82                 color_print_strbuf(s->fp, color, &linebuf);
83                 if (eol)
84                         fprintf(s->fp, "\n");
85                 else
86                         break;
87                 at_bol = 1;
88         }
89         if (trail)
90                 fprintf(s->fp, "%s", trail);
91         strbuf_release(&linebuf);
92         strbuf_release(&sb);
93 }
94
95 void status_printf_ln(struct wt_status *s, const char *color,
96                         const char *fmt, ...)
97 {
98         va_list ap;
99
100         va_start(ap, fmt);
101         status_vprintf(s, 1, color, fmt, ap, "\n");
102         va_end(ap);
103 }
104
105 void status_printf(struct wt_status *s, const char *color,
106                         const char *fmt, ...)
107 {
108         va_list ap;
109
110         va_start(ap, fmt);
111         status_vprintf(s, 1, color, fmt, ap, NULL);
112         va_end(ap);
113 }
114
115 static void status_printf_more(struct wt_status *s, const char *color,
116                                const char *fmt, ...)
117 {
118         va_list ap;
119
120         va_start(ap, fmt);
121         status_vprintf(s, 0, color, fmt, ap, NULL);
122         va_end(ap);
123 }
124
125 void wt_status_prepare(struct repository *r, struct wt_status *s)
126 {
127         memset(s, 0, sizeof(*s));
128         s->repo = r;
129         memcpy(s->color_palette, default_wt_status_colors,
130                sizeof(default_wt_status_colors));
131         s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
132         s->use_color = -1;
133         s->relative_paths = 1;
134         s->branch = resolve_refdup("HEAD", 0, NULL, NULL);
135         s->reference = "HEAD";
136         s->fp = stdout;
137         s->index_file = get_index_file();
138         s->change.strdup_strings = 1;
139         s->untracked.strdup_strings = 1;
140         s->ignored.strdup_strings = 1;
141         s->show_branch = -1;  /* unspecified */
142         s->show_stash = 0;
143         s->ahead_behind_flags = AHEAD_BEHIND_UNSPECIFIED;
144         s->display_comment_prefix = 0;
145         s->detect_rename = -1;
146         s->rename_score = -1;
147         s->rename_limit = -1;
148 }
149
150 static void wt_longstatus_print_unmerged_header(struct wt_status *s)
151 {
152         int i;
153         int del_mod_conflict = 0;
154         int both_deleted = 0;
155         int not_deleted = 0;
156         const char *c = color(WT_STATUS_HEADER, s);
157
158         status_printf_ln(s, c, _("Unmerged paths:"));
159
160         for (i = 0; i < s->change.nr; i++) {
161                 struct string_list_item *it = &(s->change.items[i]);
162                 struct wt_status_change_data *d = it->util;
163
164                 switch (d->stagemask) {
165                 case 0:
166                         break;
167                 case 1:
168                         both_deleted = 1;
169                         break;
170                 case 3:
171                 case 5:
172                         del_mod_conflict = 1;
173                         break;
174                 default:
175                         not_deleted = 1;
176                         break;
177                 }
178         }
179
180         if (!s->hints)
181                 return;
182         if (s->whence != FROM_COMMIT)
183                 ;
184         else if (!s->is_initial) {
185                 if (!strcmp(s->reference, "HEAD"))
186                         status_printf_ln(s, c,
187                                          _("  (use \"git restore --staged <file>...\" to unstage)"));
188                 else
189                         status_printf_ln(s, c,
190                                          _("  (use \"git restore --source=%s --staged <file>...\" to unstage)"),
191                                          s->reference);
192         } else
193                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
194
195         if (!both_deleted) {
196                 if (!del_mod_conflict)
197                         status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
198                 else
199                         status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
200         } else if (!del_mod_conflict && !not_deleted) {
201                 status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
202         } else {
203                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
204         }
205 }
206
207 static void wt_longstatus_print_cached_header(struct wt_status *s)
208 {
209         const char *c = color(WT_STATUS_HEADER, s);
210
211         status_printf_ln(s, c, _("Changes to be committed:"));
212         if (!s->hints)
213                 return;
214         if (s->whence != FROM_COMMIT)
215                 ; /* NEEDSWORK: use "git reset --unresolve"??? */
216         else if (!s->is_initial) {
217                 if (!strcmp(s->reference, "HEAD"))
218                         status_printf_ln(s, c
219                                          , _("  (use \"git restore --staged <file>...\" to unstage)"));
220                 else
221                         status_printf_ln(s, c,
222                                          _("  (use \"git restore --source=%s --staged <file>...\" to unstage)"),
223                                          s->reference);
224         } else
225                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
226 }
227
228 static void wt_longstatus_print_dirty_header(struct wt_status *s,
229                                              int has_deleted,
230                                              int has_dirty_submodules)
231 {
232         const char *c = color(WT_STATUS_HEADER, s);
233
234         status_printf_ln(s, c, _("Changes not staged for commit:"));
235         if (!s->hints)
236                 return;
237         if (!has_deleted)
238                 status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
239         else
240                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
241         status_printf_ln(s, c, _("  (use \"git restore <file>...\" to discard changes in working directory)"));
242         if (has_dirty_submodules)
243                 status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
244 }
245
246 static void wt_longstatus_print_other_header(struct wt_status *s,
247                                              const char *what,
248                                              const char *how)
249 {
250         const char *c = color(WT_STATUS_HEADER, s);
251         status_printf_ln(s, c, "%s:", what);
252         if (!s->hints)
253                 return;
254         status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
255 }
256
257 static void wt_longstatus_print_trailer(struct wt_status *s)
258 {
259         status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
260 }
261
262 #define quote_path quote_path_relative
263
264 static const char *wt_status_unmerged_status_string(int stagemask)
265 {
266         switch (stagemask) {
267         case 1:
268                 return _("both deleted:");
269         case 2:
270                 return _("added by us:");
271         case 3:
272                 return _("deleted by them:");
273         case 4:
274                 return _("added by them:");
275         case 5:
276                 return _("deleted by us:");
277         case 6:
278                 return _("both added:");
279         case 7:
280                 return _("both modified:");
281         default:
282                 BUG("unhandled unmerged status %x", stagemask);
283         }
284 }
285
286 static const char *wt_status_diff_status_string(int status)
287 {
288         switch (status) {
289         case DIFF_STATUS_ADDED:
290                 return _("new file:");
291         case DIFF_STATUS_COPIED:
292                 return _("copied:");
293         case DIFF_STATUS_DELETED:
294                 return _("deleted:");
295         case DIFF_STATUS_MODIFIED:
296                 return _("modified:");
297         case DIFF_STATUS_RENAMED:
298                 return _("renamed:");
299         case DIFF_STATUS_TYPE_CHANGED:
300                 return _("typechange:");
301         case DIFF_STATUS_UNKNOWN:
302                 return _("unknown:");
303         case DIFF_STATUS_UNMERGED:
304                 return _("unmerged:");
305         default:
306                 return NULL;
307         }
308 }
309
310 static int maxwidth(const char *(*label)(int), int minval, int maxval)
311 {
312         int result = 0, i;
313
314         for (i = minval; i <= maxval; i++) {
315                 const char *s = label(i);
316                 int len = s ? utf8_strwidth(s) : 0;
317                 if (len > result)
318                         result = len;
319         }
320         return result;
321 }
322
323 static void wt_longstatus_print_unmerged_data(struct wt_status *s,
324                                               struct string_list_item *it)
325 {
326         const char *c = color(WT_STATUS_UNMERGED, s);
327         struct wt_status_change_data *d = it->util;
328         struct strbuf onebuf = STRBUF_INIT;
329         static char *padding;
330         static int label_width;
331         const char *one, *how;
332         int len;
333
334         if (!padding) {
335                 label_width = maxwidth(wt_status_unmerged_status_string, 1, 7);
336                 label_width += strlen(" ");
337                 padding = xmallocz(label_width);
338                 memset(padding, ' ', label_width);
339         }
340
341         one = quote_path(it->string, s->prefix, &onebuf);
342         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
343
344         how = wt_status_unmerged_status_string(d->stagemask);
345         len = label_width - utf8_strwidth(how);
346         status_printf_more(s, c, "%s%.*s%s\n", how, len, padding, one);
347         strbuf_release(&onebuf);
348 }
349
350 static void wt_longstatus_print_change_data(struct wt_status *s,
351                                             int change_type,
352                                             struct string_list_item *it)
353 {
354         struct wt_status_change_data *d = it->util;
355         const char *c = color(change_type, s);
356         int status;
357         char *one_name;
358         char *two_name;
359         const char *one, *two;
360         struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
361         struct strbuf extra = STRBUF_INIT;
362         static char *padding;
363         static int label_width;
364         const char *what;
365         int len;
366
367         if (!padding) {
368                 /* If DIFF_STATUS_* uses outside the range [A..Z], we're in trouble */
369                 label_width = maxwidth(wt_status_diff_status_string, 'A', 'Z');
370                 label_width += strlen(" ");
371                 padding = xmallocz(label_width);
372                 memset(padding, ' ', label_width);
373         }
374
375         one_name = two_name = it->string;
376         switch (change_type) {
377         case WT_STATUS_UPDATED:
378                 status = d->index_status;
379                 break;
380         case WT_STATUS_CHANGED:
381                 if (d->new_submodule_commits || d->dirty_submodule) {
382                         strbuf_addstr(&extra, " (");
383                         if (d->new_submodule_commits)
384                                 strbuf_addstr(&extra, _("new commits, "));
385                         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
386                                 strbuf_addstr(&extra, _("modified content, "));
387                         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
388                                 strbuf_addstr(&extra, _("untracked content, "));
389                         strbuf_setlen(&extra, extra.len - 2);
390                         strbuf_addch(&extra, ')');
391                 }
392                 status = d->worktree_status;
393                 break;
394         default:
395                 BUG("unhandled change_type %d in wt_longstatus_print_change_data",
396                     change_type);
397         }
398
399         /*
400          * Only pick up the rename it's relevant. If the rename is for
401          * the changed section and we're printing the updated section,
402          * ignore it.
403          */
404         if (d->rename_status == status)
405                 one_name = d->rename_source;
406
407         one = quote_path(one_name, s->prefix, &onebuf);
408         two = quote_path(two_name, s->prefix, &twobuf);
409
410         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
411         what = wt_status_diff_status_string(status);
412         if (!what)
413                 BUG("unhandled diff status %c", status);
414         len = label_width - utf8_strwidth(what);
415         assert(len >= 0);
416         if (one_name != two_name)
417                 status_printf_more(s, c, "%s%.*s%s -> %s",
418                                    what, len, padding, one, two);
419         else
420                 status_printf_more(s, c, "%s%.*s%s",
421                                    what, len, padding, one);
422         if (extra.len) {
423                 status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
424                 strbuf_release(&extra);
425         }
426         status_printf_more(s, GIT_COLOR_NORMAL, "\n");
427         strbuf_release(&onebuf);
428         strbuf_release(&twobuf);
429 }
430
431 static char short_submodule_status(struct wt_status_change_data *d)
432 {
433         if (d->new_submodule_commits)
434                 return 'M';
435         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
436                 return 'm';
437         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
438                 return '?';
439         return d->worktree_status;
440 }
441
442 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
443                                          struct diff_options *options,
444                                          void *data)
445 {
446         struct wt_status *s = data;
447         int i;
448
449         if (!q->nr)
450                 return;
451         s->workdir_dirty = 1;
452         for (i = 0; i < q->nr; i++) {
453                 struct diff_filepair *p;
454                 struct string_list_item *it;
455                 struct wt_status_change_data *d;
456
457                 p = q->queue[i];
458                 it = string_list_insert(&s->change, p->two->path);
459                 d = it->util;
460                 if (!d) {
461                         d = xcalloc(1, sizeof(*d));
462                         it->util = d;
463                 }
464                 if (!d->worktree_status)
465                         d->worktree_status = p->status;
466                 if (S_ISGITLINK(p->two->mode)) {
467                         d->dirty_submodule = p->two->dirty_submodule;
468                         d->new_submodule_commits = !oideq(&p->one->oid,
469                                                           &p->two->oid);
470                         if (s->status_format == STATUS_FORMAT_SHORT)
471                                 d->worktree_status = short_submodule_status(d);
472                 }
473
474                 switch (p->status) {
475                 case DIFF_STATUS_ADDED:
476                         d->mode_worktree = p->two->mode;
477                         break;
478
479                 case DIFF_STATUS_DELETED:
480                         d->mode_index = p->one->mode;
481                         oidcpy(&d->oid_index, &p->one->oid);
482                         /* mode_worktree is zero for a delete. */
483                         break;
484
485                 case DIFF_STATUS_COPIED:
486                 case DIFF_STATUS_RENAMED:
487                         if (d->rename_status)
488                                 BUG("multiple renames on the same target? how?");
489                         d->rename_source = xstrdup(p->one->path);
490                         d->rename_score = p->score * 100 / MAX_SCORE;
491                         d->rename_status = p->status;
492                         /* fallthru */
493                 case DIFF_STATUS_MODIFIED:
494                 case DIFF_STATUS_TYPE_CHANGED:
495                 case DIFF_STATUS_UNMERGED:
496                         d->mode_index = p->one->mode;
497                         d->mode_worktree = p->two->mode;
498                         oidcpy(&d->oid_index, &p->one->oid);
499                         break;
500
501                 default:
502                         BUG("unhandled diff-files status '%c'", p->status);
503                         break;
504                 }
505
506         }
507 }
508
509 static int unmerged_mask(struct index_state *istate, const char *path)
510 {
511         int pos, mask;
512         const struct cache_entry *ce;
513
514         pos = index_name_pos(istate, path, strlen(path));
515         if (0 <= pos)
516                 return 0;
517
518         mask = 0;
519         pos = -pos-1;
520         while (pos < istate->cache_nr) {
521                 ce = istate->cache[pos++];
522                 if (strcmp(ce->name, path) || !ce_stage(ce))
523                         break;
524                 mask |= (1 << (ce_stage(ce) - 1));
525         }
526         return mask;
527 }
528
529 static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
530                                          struct diff_options *options,
531                                          void *data)
532 {
533         struct wt_status *s = data;
534         int i;
535
536         for (i = 0; i < q->nr; i++) {
537                 struct diff_filepair *p;
538                 struct string_list_item *it;
539                 struct wt_status_change_data *d;
540
541                 p = q->queue[i];
542                 it = string_list_insert(&s->change, p->two->path);
543                 d = it->util;
544                 if (!d) {
545                         d = xcalloc(1, sizeof(*d));
546                         it->util = d;
547                 }
548                 if (!d->index_status)
549                         d->index_status = p->status;
550                 switch (p->status) {
551                 case DIFF_STATUS_ADDED:
552                         /* Leave {mode,oid}_head zero for an add. */
553                         d->mode_index = p->two->mode;
554                         oidcpy(&d->oid_index, &p->two->oid);
555                         s->committable = 1;
556                         break;
557                 case DIFF_STATUS_DELETED:
558                         d->mode_head = p->one->mode;
559                         oidcpy(&d->oid_head, &p->one->oid);
560                         s->committable = 1;
561                         /* Leave {mode,oid}_index zero for a delete. */
562                         break;
563
564                 case DIFF_STATUS_COPIED:
565                 case DIFF_STATUS_RENAMED:
566                         if (d->rename_status)
567                                 BUG("multiple renames on the same target? how?");
568                         d->rename_source = xstrdup(p->one->path);
569                         d->rename_score = p->score * 100 / MAX_SCORE;
570                         d->rename_status = p->status;
571                         /* fallthru */
572                 case DIFF_STATUS_MODIFIED:
573                 case DIFF_STATUS_TYPE_CHANGED:
574                         d->mode_head = p->one->mode;
575                         d->mode_index = p->two->mode;
576                         oidcpy(&d->oid_head, &p->one->oid);
577                         oidcpy(&d->oid_index, &p->two->oid);
578                         s->committable = 1;
579                         break;
580                 case DIFF_STATUS_UNMERGED:
581                         d->stagemask = unmerged_mask(s->repo->index,
582                                                      p->two->path);
583                         /*
584                          * Don't bother setting {mode,oid}_{head,index} since the print
585                          * code will output the stage values directly and not use the
586                          * values in these fields.
587                          */
588                         break;
589
590                 default:
591                         BUG("unhandled diff-index status '%c'", p->status);
592                         break;
593                 }
594         }
595 }
596
597 static void wt_status_collect_changes_worktree(struct wt_status *s)
598 {
599         struct rev_info rev;
600
601         repo_init_revisions(s->repo, &rev, NULL);
602         setup_revisions(0, NULL, &rev, NULL);
603         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
604         rev.diffopt.flags.dirty_submodules = 1;
605         rev.diffopt.ita_invisible_in_index = 1;
606         if (!s->show_untracked_files)
607                 rev.diffopt.flags.ignore_untracked_in_submodules = 1;
608         if (s->ignore_submodule_arg) {
609                 rev.diffopt.flags.override_submodule_config = 1;
610                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
611         }
612         rev.diffopt.format_callback = wt_status_collect_changed_cb;
613         rev.diffopt.format_callback_data = s;
614         rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
615         rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
616         rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
617         copy_pathspec(&rev.prune_data, &s->pathspec);
618         run_diff_files(&rev, 0);
619 }
620
621 static void wt_status_collect_changes_index(struct wt_status *s)
622 {
623         struct rev_info rev;
624         struct setup_revision_opt opt;
625
626         repo_init_revisions(s->repo, &rev, NULL);
627         memset(&opt, 0, sizeof(opt));
628         opt.def = s->is_initial ? empty_tree_oid_hex() : s->reference;
629         setup_revisions(0, NULL, &rev, &opt);
630
631         rev.diffopt.flags.override_submodule_config = 1;
632         rev.diffopt.ita_invisible_in_index = 1;
633         if (s->ignore_submodule_arg) {
634                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
635         } else {
636                 /*
637                  * Unless the user did explicitly request a submodule ignore
638                  * mode by passing a command line option we do not ignore any
639                  * changed submodule SHA-1s when comparing index and HEAD, no
640                  * matter what is configured. Otherwise the user won't be
641                  * shown any submodules she manually added (and which are
642                  * staged to be committed), which would be really confusing.
643                  */
644                 handle_ignore_submodules_arg(&rev.diffopt, "dirty");
645         }
646
647         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
648         rev.diffopt.format_callback = wt_status_collect_updated_cb;
649         rev.diffopt.format_callback_data = s;
650         rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
651         rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
652         rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
653         copy_pathspec(&rev.prune_data, &s->pathspec);
654         run_diff_index(&rev, 1);
655 }
656
657 static void wt_status_collect_changes_initial(struct wt_status *s)
658 {
659         struct index_state *istate = s->repo->index;
660         int i;
661
662         for (i = 0; i < istate->cache_nr; i++) {
663                 struct string_list_item *it;
664                 struct wt_status_change_data *d;
665                 const struct cache_entry *ce = istate->cache[i];
666
667                 if (!ce_path_match(istate, ce, &s->pathspec, NULL))
668                         continue;
669                 if (ce_intent_to_add(ce))
670                         continue;
671                 it = string_list_insert(&s->change, ce->name);
672                 d = it->util;
673                 if (!d) {
674                         d = xcalloc(1, sizeof(*d));
675                         it->util = d;
676                 }
677                 if (ce_stage(ce)) {
678                         d->index_status = DIFF_STATUS_UNMERGED;
679                         d->stagemask |= (1 << (ce_stage(ce) - 1));
680                         /*
681                          * Don't bother setting {mode,oid}_{head,index} since the print
682                          * code will output the stage values directly and not use the
683                          * values in these fields.
684                          */
685                         s->committable = 1;
686                 } else {
687                         d->index_status = DIFF_STATUS_ADDED;
688                         /* Leave {mode,oid}_head zero for adds. */
689                         d->mode_index = ce->ce_mode;
690                         oidcpy(&d->oid_index, &ce->oid);
691                         s->committable = 1;
692                 }
693         }
694 }
695
696 static void wt_status_collect_untracked(struct wt_status *s)
697 {
698         int i;
699         struct dir_struct dir;
700         uint64_t t_begin = getnanotime();
701         struct index_state *istate = s->repo->index;
702
703         if (!s->show_untracked_files)
704                 return;
705
706         memset(&dir, 0, sizeof(dir));
707         if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
708                 dir.flags |=
709                         DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
710         if (s->show_ignored_mode) {
711                 dir.flags |= DIR_SHOW_IGNORED_TOO;
712
713                 if (s->show_ignored_mode == SHOW_MATCHING_IGNORED)
714                         dir.flags |= DIR_SHOW_IGNORED_TOO_MODE_MATCHING;
715         } else {
716                 dir.untracked = istate->untracked;
717         }
718
719         setup_standard_excludes(&dir);
720
721         fill_directory(&dir, istate, &s->pathspec);
722
723         for (i = 0; i < dir.nr; i++) {
724                 struct dir_entry *ent = dir.entries[i];
725                 if (index_name_is_other(istate, ent->name, ent->len) &&
726                     dir_path_match(istate, ent, &s->pathspec, 0, NULL))
727                         string_list_insert(&s->untracked, ent->name);
728                 free(ent);
729         }
730
731         for (i = 0; i < dir.ignored_nr; i++) {
732                 struct dir_entry *ent = dir.ignored[i];
733                 if (index_name_is_other(istate, ent->name, ent->len) &&
734                     dir_path_match(istate, ent, &s->pathspec, 0, NULL))
735                         string_list_insert(&s->ignored, ent->name);
736                 free(ent);
737         }
738
739         free(dir.entries);
740         free(dir.ignored);
741         clear_directory(&dir);
742
743         if (advice_status_u_option)
744                 s->untracked_in_ms = (getnanotime() - t_begin) / 1000000;
745 }
746
747 static int has_unmerged(struct wt_status *s)
748 {
749         int i;
750
751         for (i = 0; i < s->change.nr; i++) {
752                 struct wt_status_change_data *d;
753                 d = s->change.items[i].util;
754                 if (d->stagemask)
755                         return 1;
756         }
757         return 0;
758 }
759
760 void wt_status_collect(struct wt_status *s)
761 {
762         trace2_region_enter("status", "worktrees", s->repo);
763         wt_status_collect_changes_worktree(s);
764         trace2_region_leave("status", "worktrees", s->repo);
765
766         if (s->is_initial) {
767                 trace2_region_enter("status", "initial", s->repo);
768                 wt_status_collect_changes_initial(s);
769                 trace2_region_leave("status", "initial", s->repo);
770         } else {
771                 trace2_region_enter("status", "index", s->repo);
772                 wt_status_collect_changes_index(s);
773                 trace2_region_leave("status", "index", s->repo);
774         }
775
776         trace2_region_enter("status", "untracked", s->repo);
777         wt_status_collect_untracked(s);
778         trace2_region_leave("status", "untracked", s->repo);
779
780         wt_status_get_state(s->repo, &s->state, s->branch && !strcmp(s->branch, "HEAD"));
781         if (s->state.merge_in_progress && !has_unmerged(s))
782                 s->committable = 1;
783 }
784
785 void wt_status_collect_free_buffers(struct wt_status *s)
786 {
787         free(s->state.branch);
788         free(s->state.onto);
789         free(s->state.detached_from);
790 }
791
792 static void wt_longstatus_print_unmerged(struct wt_status *s)
793 {
794         int shown_header = 0;
795         int i;
796
797         for (i = 0; i < s->change.nr; i++) {
798                 struct wt_status_change_data *d;
799                 struct string_list_item *it;
800                 it = &(s->change.items[i]);
801                 d = it->util;
802                 if (!d->stagemask)
803                         continue;
804                 if (!shown_header) {
805                         wt_longstatus_print_unmerged_header(s);
806                         shown_header = 1;
807                 }
808                 wt_longstatus_print_unmerged_data(s, it);
809         }
810         if (shown_header)
811                 wt_longstatus_print_trailer(s);
812
813 }
814
815 static void wt_longstatus_print_updated(struct wt_status *s)
816 {
817         int shown_header = 0;
818         int i;
819
820         for (i = 0; i < s->change.nr; i++) {
821                 struct wt_status_change_data *d;
822                 struct string_list_item *it;
823                 it = &(s->change.items[i]);
824                 d = it->util;
825                 if (!d->index_status ||
826                     d->index_status == DIFF_STATUS_UNMERGED)
827                         continue;
828                 if (!shown_header) {
829                         wt_longstatus_print_cached_header(s);
830                         shown_header = 1;
831                 }
832                 wt_longstatus_print_change_data(s, WT_STATUS_UPDATED, it);
833         }
834         if (shown_header)
835                 wt_longstatus_print_trailer(s);
836 }
837
838 /*
839  * -1 : has delete
840  *  0 : no change
841  *  1 : some change but no delete
842  */
843 static int wt_status_check_worktree_changes(struct wt_status *s,
844                                              int *dirty_submodules)
845 {
846         int i;
847         int changes = 0;
848
849         *dirty_submodules = 0;
850
851         for (i = 0; i < s->change.nr; i++) {
852                 struct wt_status_change_data *d;
853                 d = s->change.items[i].util;
854                 if (!d->worktree_status ||
855                     d->worktree_status == DIFF_STATUS_UNMERGED)
856                         continue;
857                 if (!changes)
858                         changes = 1;
859                 if (d->dirty_submodule)
860                         *dirty_submodules = 1;
861                 if (d->worktree_status == DIFF_STATUS_DELETED)
862                         changes = -1;
863         }
864         return changes;
865 }
866
867 static void wt_longstatus_print_changed(struct wt_status *s)
868 {
869         int i, dirty_submodules;
870         int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
871
872         if (!worktree_changes)
873                 return;
874
875         wt_longstatus_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
876
877         for (i = 0; i < s->change.nr; i++) {
878                 struct wt_status_change_data *d;
879                 struct string_list_item *it;
880                 it = &(s->change.items[i]);
881                 d = it->util;
882                 if (!d->worktree_status ||
883                     d->worktree_status == DIFF_STATUS_UNMERGED)
884                         continue;
885                 wt_longstatus_print_change_data(s, WT_STATUS_CHANGED, it);
886         }
887         wt_longstatus_print_trailer(s);
888 }
889
890 static int stash_count_refs(struct object_id *ooid, struct object_id *noid,
891                             const char *email, timestamp_t timestamp, int tz,
892                             const char *message, void *cb_data)
893 {
894         int *c = cb_data;
895         (*c)++;
896         return 0;
897 }
898
899 static void wt_longstatus_print_stash_summary(struct wt_status *s)
900 {
901         int stash_count = 0;
902
903         for_each_reflog_ent("refs/stash", stash_count_refs, &stash_count);
904         if (stash_count > 0)
905                 status_printf_ln(s, GIT_COLOR_NORMAL,
906                                  Q_("Your stash currently has %d entry",
907                                     "Your stash currently has %d entries", stash_count),
908                                  stash_count);
909 }
910
911 static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncommitted)
912 {
913         struct child_process sm_summary = CHILD_PROCESS_INIT;
914         struct strbuf cmd_stdout = STRBUF_INIT;
915         struct strbuf summary = STRBUF_INIT;
916         char *summary_content;
917
918         argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
919                          s->index_file);
920
921         argv_array_push(&sm_summary.args, "submodule");
922         argv_array_push(&sm_summary.args, "summary");
923         argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
924         argv_array_push(&sm_summary.args, "--for-status");
925         argv_array_push(&sm_summary.args, "--summary-limit");
926         argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
927         if (!uncommitted)
928                 argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
929
930         sm_summary.git_cmd = 1;
931         sm_summary.no_stdin = 1;
932
933         capture_command(&sm_summary, &cmd_stdout, 1024);
934
935         /* prepend header, only if there's an actual output */
936         if (cmd_stdout.len) {
937                 if (uncommitted)
938                         strbuf_addstr(&summary, _("Submodules changed but not updated:"));
939                 else
940                         strbuf_addstr(&summary, _("Submodule changes to be committed:"));
941                 strbuf_addstr(&summary, "\n\n");
942         }
943         strbuf_addbuf(&summary, &cmd_stdout);
944         strbuf_release(&cmd_stdout);
945
946         if (s->display_comment_prefix) {
947                 size_t len;
948                 summary_content = strbuf_detach(&summary, &len);
949                 strbuf_add_commented_lines(&summary, summary_content, len);
950                 free(summary_content);
951         }
952
953         fputs(summary.buf, s->fp);
954         strbuf_release(&summary);
955 }
956
957 static void wt_longstatus_print_other(struct wt_status *s,
958                                       struct string_list *l,
959                                       const char *what,
960                                       const char *how)
961 {
962         int i;
963         struct strbuf buf = STRBUF_INIT;
964         static struct string_list output = STRING_LIST_INIT_DUP;
965         struct column_options copts;
966
967         if (!l->nr)
968                 return;
969
970         wt_longstatus_print_other_header(s, what, how);
971
972         for (i = 0; i < l->nr; i++) {
973                 struct string_list_item *it;
974                 const char *path;
975                 it = &(l->items[i]);
976                 path = quote_path(it->string, s->prefix, &buf);
977                 if (column_active(s->colopts)) {
978                         string_list_append(&output, path);
979                         continue;
980                 }
981                 status_printf(s, color(WT_STATUS_HEADER, s), "\t");
982                 status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
983                                    "%s\n", path);
984         }
985
986         strbuf_release(&buf);
987         if (!column_active(s->colopts))
988                 goto conclude;
989
990         strbuf_addf(&buf, "%s%s\t%s",
991                     color(WT_STATUS_HEADER, s),
992                     s->display_comment_prefix ? "#" : "",
993                     color(WT_STATUS_UNTRACKED, s));
994         memset(&copts, 0, sizeof(copts));
995         copts.padding = 1;
996         copts.indent = buf.buf;
997         if (want_color(s->use_color))
998                 copts.nl = GIT_COLOR_RESET "\n";
999         print_columns(&output, s->colopts, &copts);
1000         string_list_clear(&output, 0);
1001         strbuf_release(&buf);
1002 conclude:
1003         status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1004 }
1005
1006 size_t wt_status_locate_end(const char *s, size_t len)
1007 {
1008         const char *p;
1009         struct strbuf pattern = STRBUF_INIT;
1010
1011         strbuf_addf(&pattern, "\n%c %s", comment_line_char, cut_line);
1012         if (starts_with(s, pattern.buf + 1))
1013                 len = 0;
1014         else if ((p = strstr(s, pattern.buf)))
1015                 len = p - s + 1;
1016         strbuf_release(&pattern);
1017         return len;
1018 }
1019
1020 void wt_status_append_cut_line(struct strbuf *buf)
1021 {
1022         const char *explanation = _("Do not modify or remove the line above.\nEverything below it will be ignored.");
1023
1024         strbuf_commented_addf(buf, "%s", cut_line);
1025         strbuf_add_commented_lines(buf, explanation, strlen(explanation));
1026 }
1027
1028 void wt_status_add_cut_line(FILE *fp)
1029 {
1030         struct strbuf buf = STRBUF_INIT;
1031
1032         wt_status_append_cut_line(&buf);
1033         fputs(buf.buf, fp);
1034         strbuf_release(&buf);
1035 }
1036
1037 static void wt_longstatus_print_verbose(struct wt_status *s)
1038 {
1039         struct rev_info rev;
1040         struct setup_revision_opt opt;
1041         int dirty_submodules;
1042         const char *c = color(WT_STATUS_HEADER, s);
1043
1044         repo_init_revisions(s->repo, &rev, NULL);
1045         rev.diffopt.flags.allow_textconv = 1;
1046         rev.diffopt.ita_invisible_in_index = 1;
1047
1048         memset(&opt, 0, sizeof(opt));
1049         opt.def = s->is_initial ? empty_tree_oid_hex() : s->reference;
1050         setup_revisions(0, NULL, &rev, &opt);
1051
1052         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
1053         rev.diffopt.detect_rename = s->detect_rename >= 0 ? s->detect_rename : rev.diffopt.detect_rename;
1054         rev.diffopt.rename_limit = s->rename_limit >= 0 ? s->rename_limit : rev.diffopt.rename_limit;
1055         rev.diffopt.rename_score = s->rename_score >= 0 ? s->rename_score : rev.diffopt.rename_score;
1056         rev.diffopt.file = s->fp;
1057         rev.diffopt.close_file = 0;
1058         /*
1059          * If we're not going to stdout, then we definitely don't
1060          * want color, since we are going to the commit message
1061          * file (and even the "auto" setting won't work, since it
1062          * will have checked isatty on stdout). But we then do want
1063          * to insert the scissor line here to reliably remove the
1064          * diff before committing.
1065          */
1066         if (s->fp != stdout) {
1067                 rev.diffopt.use_color = 0;
1068                 wt_status_add_cut_line(s->fp);
1069         }
1070         if (s->verbose > 1 && s->committable) {
1071                 /* print_updated() printed a header, so do we */
1072                 if (s->fp != stdout)
1073                         wt_longstatus_print_trailer(s);
1074                 status_printf_ln(s, c, _("Changes to be committed:"));
1075                 rev.diffopt.a_prefix = "c/";
1076                 rev.diffopt.b_prefix = "i/";
1077         } /* else use prefix as per user config */
1078         run_diff_index(&rev, 1);
1079         if (s->verbose > 1 &&
1080             wt_status_check_worktree_changes(s, &dirty_submodules)) {
1081                 status_printf_ln(s, c,
1082                         "--------------------------------------------------");
1083                 status_printf_ln(s, c, _("Changes not staged for commit:"));
1084                 setup_work_tree();
1085                 rev.diffopt.a_prefix = "i/";
1086                 rev.diffopt.b_prefix = "w/";
1087                 run_diff_files(&rev, 0);
1088         }
1089 }
1090
1091 static void wt_longstatus_print_tracking(struct wt_status *s)
1092 {
1093         struct strbuf sb = STRBUF_INIT;
1094         const char *cp, *ep, *branch_name;
1095         struct branch *branch;
1096         char comment_line_string[3];
1097         int i;
1098         uint64_t t_begin = 0;
1099
1100         assert(s->branch && !s->is_initial);
1101         if (!skip_prefix(s->branch, "refs/heads/", &branch_name))
1102                 return;
1103         branch = branch_get(branch_name);
1104
1105         t_begin = getnanotime();
1106
1107         if (!format_tracking_info(branch, &sb, s->ahead_behind_flags))
1108                 return;
1109
1110         if (advice_status_ahead_behind_warning &&
1111             s->ahead_behind_flags == AHEAD_BEHIND_FULL) {
1112                 uint64_t t_delta_in_ms = (getnanotime() - t_begin) / 1000000;
1113                 if (t_delta_in_ms > AB_DELAY_WARNING_IN_MS) {
1114                         strbuf_addf(&sb, _("\n"
1115                                            "It took %.2f seconds to compute the branch ahead/behind values.\n"
1116                                            "You can use '--no-ahead-behind' to avoid this.\n"),
1117                                     t_delta_in_ms / 1000.0);
1118                 }
1119         }
1120
1121         i = 0;
1122         if (s->display_comment_prefix) {
1123                 comment_line_string[i++] = comment_line_char;
1124                 comment_line_string[i++] = ' ';
1125         }
1126         comment_line_string[i] = '\0';
1127
1128         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
1129                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
1130                                  "%s%.*s", comment_line_string,
1131                                  (int)(ep - cp), cp);
1132         if (s->display_comment_prefix)
1133                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
1134                                  comment_line_char);
1135         else
1136                 fputs("\n", s->fp);
1137         strbuf_release(&sb);
1138 }
1139
1140 static void show_merge_in_progress(struct wt_status *s,
1141                                    const char *color)
1142 {
1143         if (has_unmerged(s)) {
1144                 status_printf_ln(s, color, _("You have unmerged paths."));
1145                 if (s->hints) {
1146                         status_printf_ln(s, color,
1147                                          _("  (fix conflicts and run \"git commit\")"));
1148                         status_printf_ln(s, color,
1149                                          _("  (use \"git merge --abort\" to abort the merge)"));
1150                 }
1151         } else {
1152                 status_printf_ln(s, color,
1153                         _("All conflicts fixed but you are still merging."));
1154                 if (s->hints)
1155                         status_printf_ln(s, color,
1156                                 _("  (use \"git commit\" to conclude merge)"));
1157         }
1158         wt_longstatus_print_trailer(s);
1159 }
1160
1161 static void show_am_in_progress(struct wt_status *s,
1162                                 const char *color)
1163 {
1164         status_printf_ln(s, color,
1165                 _("You are in the middle of an am session."));
1166         if (s->state.am_empty_patch)
1167                 status_printf_ln(s, color,
1168                         _("The current patch is empty."));
1169         if (s->hints) {
1170                 if (!s->state.am_empty_patch)
1171                         status_printf_ln(s, color,
1172                                 _("  (fix conflicts and then run \"git am --continue\")"));
1173                 status_printf_ln(s, color,
1174                         _("  (use \"git am --skip\" to skip this patch)"));
1175                 status_printf_ln(s, color,
1176                         _("  (use \"git am --abort\" to restore the original branch)"));
1177         }
1178         wt_longstatus_print_trailer(s);
1179 }
1180
1181 static char *read_line_from_git_path(const char *filename)
1182 {
1183         struct strbuf buf = STRBUF_INIT;
1184         FILE *fp = fopen_or_warn(git_path("%s", filename), "r");
1185
1186         if (!fp) {
1187                 strbuf_release(&buf);
1188                 return NULL;
1189         }
1190         strbuf_getline_lf(&buf, fp);
1191         if (!fclose(fp)) {
1192                 return strbuf_detach(&buf, NULL);
1193         } else {
1194                 strbuf_release(&buf);
1195                 return NULL;
1196         }
1197 }
1198
1199 static int split_commit_in_progress(struct wt_status *s)
1200 {
1201         int split_in_progress = 0;
1202         char *head, *orig_head, *rebase_amend, *rebase_orig_head;
1203
1204         if ((!s->amend && !s->nowarn && !s->workdir_dirty) ||
1205             !s->branch || strcmp(s->branch, "HEAD"))
1206                 return 0;
1207
1208         head = read_line_from_git_path("HEAD");
1209         orig_head = read_line_from_git_path("ORIG_HEAD");
1210         rebase_amend = read_line_from_git_path("rebase-merge/amend");
1211         rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
1212
1213         if (!head || !orig_head || !rebase_amend || !rebase_orig_head)
1214                 ; /* fall through, no split in progress */
1215         else if (!strcmp(rebase_amend, rebase_orig_head))
1216                 split_in_progress = !!strcmp(head, rebase_amend);
1217         else if (strcmp(orig_head, rebase_orig_head))
1218                 split_in_progress = 1;
1219
1220         free(head);
1221         free(orig_head);
1222         free(rebase_amend);
1223         free(rebase_orig_head);
1224
1225         return split_in_progress;
1226 }
1227
1228 /*
1229  * Turn
1230  * "pick d6a2f0303e897ec257dd0e0a39a5ccb709bc2047 some message"
1231  * into
1232  * "pick d6a2f03 some message"
1233  *
1234  * The function assumes that the line does not contain useless spaces
1235  * before or after the command.
1236  */
1237 static void abbrev_sha1_in_line(struct strbuf *line)
1238 {
1239         struct strbuf **split;
1240         int i;
1241
1242         if (starts_with(line->buf, "exec ") ||
1243             starts_with(line->buf, "x ") ||
1244             starts_with(line->buf, "label ") ||
1245             starts_with(line->buf, "l "))
1246                 return;
1247
1248         split = strbuf_split_max(line, ' ', 3);
1249         if (split[0] && split[1]) {
1250                 struct object_id oid;
1251
1252                 /*
1253                  * strbuf_split_max left a space. Trim it and re-add
1254                  * it after abbreviation.
1255                  */
1256                 strbuf_trim(split[1]);
1257                 if (!get_oid(split[1]->buf, &oid)) {
1258                         strbuf_reset(split[1]);
1259                         strbuf_add_unique_abbrev(split[1], &oid,
1260                                                  DEFAULT_ABBREV);
1261                         strbuf_addch(split[1], ' ');
1262                         strbuf_reset(line);
1263                         for (i = 0; split[i]; i++)
1264                                 strbuf_addbuf(line, split[i]);
1265                 }
1266         }
1267         strbuf_list_free(split);
1268 }
1269
1270 static int read_rebase_todolist(const char *fname, struct string_list *lines)
1271 {
1272         struct strbuf line = STRBUF_INIT;
1273         FILE *f = fopen(git_path("%s", fname), "r");
1274
1275         if (!f) {
1276                 if (errno == ENOENT)
1277                         return -1;
1278                 die_errno("Could not open file %s for reading",
1279                           git_path("%s", fname));
1280         }
1281         while (!strbuf_getline_lf(&line, f)) {
1282                 if (line.len && line.buf[0] == comment_line_char)
1283                         continue;
1284                 strbuf_trim(&line);
1285                 if (!line.len)
1286                         continue;
1287                 abbrev_sha1_in_line(&line);
1288                 string_list_append(lines, line.buf);
1289         }
1290         fclose(f);
1291         strbuf_release(&line);
1292         return 0;
1293 }
1294
1295 static void show_rebase_information(struct wt_status *s,
1296                                     const char *color)
1297 {
1298         if (s->state.rebase_interactive_in_progress) {
1299                 int i;
1300                 int nr_lines_to_show = 2;
1301
1302                 struct string_list have_done = STRING_LIST_INIT_DUP;
1303                 struct string_list yet_to_do = STRING_LIST_INIT_DUP;
1304
1305                 read_rebase_todolist("rebase-merge/done", &have_done);
1306                 if (read_rebase_todolist("rebase-merge/git-rebase-todo",
1307                                          &yet_to_do))
1308                         status_printf_ln(s, color,
1309                                 _("git-rebase-todo is missing."));
1310                 if (have_done.nr == 0)
1311                         status_printf_ln(s, color, _("No commands done."));
1312                 else {
1313                         status_printf_ln(s, color,
1314                                 Q_("Last command done (%d command done):",
1315                                         "Last commands done (%d commands done):",
1316                                         have_done.nr),
1317                                 have_done.nr);
1318                         for (i = (have_done.nr > nr_lines_to_show)
1319                                 ? have_done.nr - nr_lines_to_show : 0;
1320                                 i < have_done.nr;
1321                                 i++)
1322                                 status_printf_ln(s, color, "   %s", have_done.items[i].string);
1323                         if (have_done.nr > nr_lines_to_show && s->hints)
1324                                 status_printf_ln(s, color,
1325                                         _("  (see more in file %s)"), git_path("rebase-merge/done"));
1326                 }
1327
1328                 if (yet_to_do.nr == 0)
1329                         status_printf_ln(s, color,
1330                                          _("No commands remaining."));
1331                 else {
1332                         status_printf_ln(s, color,
1333                                 Q_("Next command to do (%d remaining command):",
1334                                         "Next commands to do (%d remaining commands):",
1335                                         yet_to_do.nr),
1336                                 yet_to_do.nr);
1337                         for (i = 0; i < nr_lines_to_show && i < yet_to_do.nr; i++)
1338                                 status_printf_ln(s, color, "   %s", yet_to_do.items[i].string);
1339                         if (s->hints)
1340                                 status_printf_ln(s, color,
1341                                         _("  (use \"git rebase --edit-todo\" to view and edit)"));
1342                 }
1343                 string_list_clear(&yet_to_do, 0);
1344                 string_list_clear(&have_done, 0);
1345         }
1346 }
1347
1348 static void print_rebase_state(struct wt_status *s,
1349                                const char *color)
1350 {
1351         if (s->state.branch)
1352                 status_printf_ln(s, color,
1353                                  _("You are currently rebasing branch '%s' on '%s'."),
1354                                  s->state.branch,
1355                                  s->state.onto);
1356         else
1357                 status_printf_ln(s, color,
1358                                  _("You are currently rebasing."));
1359 }
1360
1361 static void show_rebase_in_progress(struct wt_status *s,
1362                                     const char *color)
1363 {
1364         struct stat st;
1365
1366         show_rebase_information(s, color);
1367         if (has_unmerged(s)) {
1368                 print_rebase_state(s, color);
1369                 if (s->hints) {
1370                         status_printf_ln(s, color,
1371                                 _("  (fix conflicts and then run \"git rebase --continue\")"));
1372                         status_printf_ln(s, color,
1373                                 _("  (use \"git rebase --skip\" to skip this patch)"));
1374                         status_printf_ln(s, color,
1375                                 _("  (use \"git rebase --abort\" to check out the original branch)"));
1376                 }
1377         } else if (s->state.rebase_in_progress ||
1378                    !stat(git_path_merge_msg(s->repo), &st)) {
1379                 print_rebase_state(s, color);
1380                 if (s->hints)
1381                         status_printf_ln(s, color,
1382                                 _("  (all conflicts fixed: run \"git rebase --continue\")"));
1383         } else if (split_commit_in_progress(s)) {
1384                 if (s->state.branch)
1385                         status_printf_ln(s, color,
1386                                          _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
1387                                          s->state.branch,
1388                                          s->state.onto);
1389                 else
1390                         status_printf_ln(s, color,
1391                                          _("You are currently splitting a commit during a rebase."));
1392                 if (s->hints)
1393                         status_printf_ln(s, color,
1394                                 _("  (Once your working directory is clean, run \"git rebase --continue\")"));
1395         } else {
1396                 if (s->state.branch)
1397                         status_printf_ln(s, color,
1398                                          _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
1399                                          s->state.branch,
1400                                          s->state.onto);
1401                 else
1402                         status_printf_ln(s, color,
1403                                          _("You are currently editing a commit during a rebase."));
1404                 if (s->hints && !s->amend) {
1405                         status_printf_ln(s, color,
1406                                 _("  (use \"git commit --amend\" to amend the current commit)"));
1407                         status_printf_ln(s, color,
1408                                 _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
1409                 }
1410         }
1411         wt_longstatus_print_trailer(s);
1412 }
1413
1414 static void show_cherry_pick_in_progress(struct wt_status *s,
1415                                          const char *color)
1416 {
1417         if (is_null_oid(&s->state.cherry_pick_head_oid))
1418                 status_printf_ln(s, color,
1419                         _("Cherry-pick currently in progress."));
1420         else
1421                 status_printf_ln(s, color,
1422                         _("You are currently cherry-picking commit %s."),
1423                         find_unique_abbrev(&s->state.cherry_pick_head_oid,
1424                                            DEFAULT_ABBREV));
1425
1426         if (s->hints) {
1427                 if (has_unmerged(s))
1428                         status_printf_ln(s, color,
1429                                 _("  (fix conflicts and run \"git cherry-pick --continue\")"));
1430                 else if (is_null_oid(&s->state.cherry_pick_head_oid))
1431                         status_printf_ln(s, color,
1432                                 _("  (run \"git cherry-pick --continue\" to continue)"));
1433                 else
1434                         status_printf_ln(s, color,
1435                                 _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
1436                 status_printf_ln(s, color,
1437                         _("  (use \"git cherry-pick --skip\" to skip this patch)"));
1438                 status_printf_ln(s, color,
1439                         _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
1440         }
1441         wt_longstatus_print_trailer(s);
1442 }
1443
1444 static void show_revert_in_progress(struct wt_status *s,
1445                                     const char *color)
1446 {
1447         if (is_null_oid(&s->state.revert_head_oid))
1448                 status_printf_ln(s, color,
1449                         _("Revert currently in progress."));
1450         else
1451                 status_printf_ln(s, color,
1452                         _("You are currently reverting commit %s."),
1453                         find_unique_abbrev(&s->state.revert_head_oid,
1454                                            DEFAULT_ABBREV));
1455         if (s->hints) {
1456                 if (has_unmerged(s))
1457                         status_printf_ln(s, color,
1458                                 _("  (fix conflicts and run \"git revert --continue\")"));
1459                 else if (is_null_oid(&s->state.revert_head_oid))
1460                         status_printf_ln(s, color,
1461                                 _("  (run \"git revert --continue\" to continue)"));
1462                 else
1463                         status_printf_ln(s, color,
1464                                 _("  (all conflicts fixed: run \"git revert --continue\")"));
1465                 status_printf_ln(s, color,
1466                         _("  (use \"git revert --skip\" to skip this patch)"));
1467                 status_printf_ln(s, color,
1468                         _("  (use \"git revert --abort\" to cancel the revert operation)"));
1469         }
1470         wt_longstatus_print_trailer(s);
1471 }
1472
1473 static void show_bisect_in_progress(struct wt_status *s,
1474                                     const char *color)
1475 {
1476         if (s->state.branch)
1477                 status_printf_ln(s, color,
1478                                  _("You are currently bisecting, started from branch '%s'."),
1479                                  s->state.branch);
1480         else
1481                 status_printf_ln(s, color,
1482                                  _("You are currently bisecting."));
1483         if (s->hints)
1484                 status_printf_ln(s, color,
1485                         _("  (use \"git bisect reset\" to get back to the original branch)"));
1486         wt_longstatus_print_trailer(s);
1487 }
1488
1489 /*
1490  * Extract branch information from rebase/bisect
1491  */
1492 static char *get_branch(const struct worktree *wt, const char *path)
1493 {
1494         struct strbuf sb = STRBUF_INIT;
1495         struct object_id oid;
1496         const char *branch_name;
1497
1498         if (strbuf_read_file(&sb, worktree_git_path(wt, "%s", path), 0) <= 0)
1499                 goto got_nothing;
1500
1501         while (sb.len && sb.buf[sb.len - 1] == '\n')
1502                 strbuf_setlen(&sb, sb.len - 1);
1503         if (!sb.len)
1504                 goto got_nothing;
1505         if (skip_prefix(sb.buf, "refs/heads/", &branch_name))
1506                 strbuf_remove(&sb, 0, branch_name - sb.buf);
1507         else if (starts_with(sb.buf, "refs/"))
1508                 ;
1509         else if (!get_oid_hex(sb.buf, &oid)) {
1510                 strbuf_reset(&sb);
1511                 strbuf_add_unique_abbrev(&sb, &oid, DEFAULT_ABBREV);
1512         } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1513                 goto got_nothing;
1514         else                    /* bisect */
1515                 ;
1516         return strbuf_detach(&sb, NULL);
1517
1518 got_nothing:
1519         strbuf_release(&sb);
1520         return NULL;
1521 }
1522
1523 struct grab_1st_switch_cbdata {
1524         struct strbuf buf;
1525         struct object_id noid;
1526 };
1527
1528 static int grab_1st_switch(struct object_id *ooid, struct object_id *noid,
1529                            const char *email, timestamp_t timestamp, int tz,
1530                            const char *message, void *cb_data)
1531 {
1532         struct grab_1st_switch_cbdata *cb = cb_data;
1533         const char *target = NULL, *end;
1534
1535         if (!skip_prefix(message, "checkout: moving from ", &message))
1536                 return 0;
1537         target = strstr(message, " to ");
1538         if (!target)
1539                 return 0;
1540         target += strlen(" to ");
1541         strbuf_reset(&cb->buf);
1542         oidcpy(&cb->noid, noid);
1543         end = strchrnul(target, '\n');
1544         strbuf_add(&cb->buf, target, end - target);
1545         if (!strcmp(cb->buf.buf, "HEAD")) {
1546                 /* HEAD is relative. Resolve it to the right reflog entry. */
1547                 strbuf_reset(&cb->buf);
1548                 strbuf_add_unique_abbrev(&cb->buf, noid, DEFAULT_ABBREV);
1549         }
1550         return 1;
1551 }
1552
1553 static void wt_status_get_detached_from(struct repository *r,
1554                                         struct wt_status_state *state)
1555 {
1556         struct grab_1st_switch_cbdata cb;
1557         struct commit *commit;
1558         struct object_id oid;
1559         char *ref = NULL;
1560
1561         strbuf_init(&cb.buf, 0);
1562         if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1563                 strbuf_release(&cb.buf);
1564                 return;
1565         }
1566
1567         if (dwim_ref(cb.buf.buf, cb.buf.len, &oid, &ref) == 1 &&
1568             /* sha1 is a commit? match without further lookup */
1569             (oideq(&cb.noid, &oid) ||
1570              /* perhaps sha1 is a tag, try to dereference to a commit */
1571              ((commit = lookup_commit_reference_gently(r, &oid, 1)) != NULL &&
1572               oideq(&cb.noid, &commit->object.oid)))) {
1573                 const char *from = ref;
1574                 if (!skip_prefix(from, "refs/tags/", &from))
1575                         skip_prefix(from, "refs/remotes/", &from);
1576                 state->detached_from = xstrdup(from);
1577         } else
1578                 state->detached_from =
1579                         xstrdup(find_unique_abbrev(&cb.noid, DEFAULT_ABBREV));
1580         oidcpy(&state->detached_oid, &cb.noid);
1581         state->detached_at = !get_oid("HEAD", &oid) &&
1582                              oideq(&oid, &state->detached_oid);
1583
1584         free(ref);
1585         strbuf_release(&cb.buf);
1586 }
1587
1588 int wt_status_check_rebase(const struct worktree *wt,
1589                            struct wt_status_state *state)
1590 {
1591         struct stat st;
1592
1593         if (!stat(worktree_git_path(wt, "rebase-apply"), &st)) {
1594                 if (!stat(worktree_git_path(wt, "rebase-apply/applying"), &st)) {
1595                         state->am_in_progress = 1;
1596                         if (!stat(worktree_git_path(wt, "rebase-apply/patch"), &st) && !st.st_size)
1597                                 state->am_empty_patch = 1;
1598                 } else {
1599                         state->rebase_in_progress = 1;
1600                         state->branch = get_branch(wt, "rebase-apply/head-name");
1601                         state->onto = get_branch(wt, "rebase-apply/onto");
1602                 }
1603         } else if (!stat(worktree_git_path(wt, "rebase-merge"), &st)) {
1604                 if (!stat(worktree_git_path(wt, "rebase-merge/interactive"), &st))
1605                         state->rebase_interactive_in_progress = 1;
1606                 else
1607                         state->rebase_in_progress = 1;
1608                 state->branch = get_branch(wt, "rebase-merge/head-name");
1609                 state->onto = get_branch(wt, "rebase-merge/onto");
1610         } else
1611                 return 0;
1612         return 1;
1613 }
1614
1615 int wt_status_check_bisect(const struct worktree *wt,
1616                            struct wt_status_state *state)
1617 {
1618         struct stat st;
1619
1620         if (!stat(worktree_git_path(wt, "BISECT_LOG"), &st)) {
1621                 state->bisect_in_progress = 1;
1622                 state->branch = get_branch(wt, "BISECT_START");
1623                 return 1;
1624         }
1625         return 0;
1626 }
1627
1628 void wt_status_get_state(struct repository *r,
1629                          struct wt_status_state *state,
1630                          int get_detached_from)
1631 {
1632         struct stat st;
1633         struct object_id oid;
1634         enum replay_action action;
1635
1636         if (!stat(git_path_merge_head(r), &st)) {
1637                 wt_status_check_rebase(NULL, state);
1638                 state->merge_in_progress = 1;
1639         } else if (wt_status_check_rebase(NULL, state)) {
1640                 ;               /* all set */
1641         } else if (!stat(git_path_cherry_pick_head(r), &st) &&
1642                         !get_oid("CHERRY_PICK_HEAD", &oid)) {
1643                 state->cherry_pick_in_progress = 1;
1644                 oidcpy(&state->cherry_pick_head_oid, &oid);
1645         }
1646         wt_status_check_bisect(NULL, state);
1647         if (!stat(git_path_revert_head(r), &st) &&
1648             !get_oid("REVERT_HEAD", &oid)) {
1649                 state->revert_in_progress = 1;
1650                 oidcpy(&state->revert_head_oid, &oid);
1651         }
1652         if (!sequencer_get_last_command(r, &action)) {
1653                 if (action == REPLAY_PICK) {
1654                         state->cherry_pick_in_progress = 1;
1655                         oidcpy(&state->cherry_pick_head_oid, &null_oid);
1656                 } else {
1657                         state->revert_in_progress = 1;
1658                         oidcpy(&state->revert_head_oid, &null_oid);
1659                 }
1660         }
1661         if (get_detached_from)
1662                 wt_status_get_detached_from(r, state);
1663 }
1664
1665 static void wt_longstatus_print_state(struct wt_status *s)
1666 {
1667         const char *state_color = color(WT_STATUS_HEADER, s);
1668         struct wt_status_state *state = &s->state;
1669
1670         if (state->merge_in_progress) {
1671                 if (state->rebase_interactive_in_progress) {
1672                         show_rebase_information(s, state_color);
1673                         fputs("\n", s->fp);
1674                 }
1675                 show_merge_in_progress(s, state_color);
1676         } else if (state->am_in_progress)
1677                 show_am_in_progress(s, state_color);
1678         else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1679                 show_rebase_in_progress(s, state_color);
1680         else if (state->cherry_pick_in_progress)
1681                 show_cherry_pick_in_progress(s, state_color);
1682         else if (state->revert_in_progress)
1683                 show_revert_in_progress(s, state_color);
1684         if (state->bisect_in_progress)
1685                 show_bisect_in_progress(s, state_color);
1686 }
1687
1688 static void wt_longstatus_print(struct wt_status *s)
1689 {
1690         const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1691         const char *branch_status_color = color(WT_STATUS_HEADER, s);
1692
1693         if (s->branch) {
1694                 const char *on_what = _("On branch ");
1695                 const char *branch_name = s->branch;
1696                 if (!strcmp(branch_name, "HEAD")) {
1697                         branch_status_color = color(WT_STATUS_NOBRANCH, s);
1698                         if (s->state.rebase_in_progress ||
1699                             s->state.rebase_interactive_in_progress) {
1700                                 if (s->state.rebase_interactive_in_progress)
1701                                         on_what = _("interactive rebase in progress; onto ");
1702                                 else
1703                                         on_what = _("rebase in progress; onto ");
1704                                 branch_name = s->state.onto;
1705                         } else if (s->state.detached_from) {
1706                                 branch_name = s->state.detached_from;
1707                                 if (s->state.detached_at)
1708                                         on_what = HEAD_DETACHED_AT;
1709                                 else
1710                                         on_what = HEAD_DETACHED_FROM;
1711                         } else {
1712                                 branch_name = "";
1713                                 on_what = _("Not currently on any branch.");
1714                         }
1715                 } else
1716                         skip_prefix(branch_name, "refs/heads/", &branch_name);
1717                 status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
1718                 status_printf_more(s, branch_status_color, "%s", on_what);
1719                 status_printf_more(s, branch_color, "%s\n", branch_name);
1720                 if (!s->is_initial)
1721                         wt_longstatus_print_tracking(s);
1722         }
1723
1724         wt_longstatus_print_state(s);
1725
1726         if (s->is_initial) {
1727                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1728                 status_printf_ln(s, color(WT_STATUS_HEADER, s),
1729                                  s->commit_template
1730                                  ? _("Initial commit")
1731                                  : _("No commits yet"));
1732                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
1733         }
1734
1735         wt_longstatus_print_updated(s);
1736         wt_longstatus_print_unmerged(s);
1737         wt_longstatus_print_changed(s);
1738         if (s->submodule_summary &&
1739             (!s->ignore_submodule_arg ||
1740              strcmp(s->ignore_submodule_arg, "all"))) {
1741                 wt_longstatus_print_submodule_summary(s, 0);  /* staged */
1742                 wt_longstatus_print_submodule_summary(s, 1);  /* unstaged */
1743         }
1744         if (s->show_untracked_files) {
1745                 wt_longstatus_print_other(s, &s->untracked, _("Untracked files"), "add");
1746                 if (s->show_ignored_mode)
1747                         wt_longstatus_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1748                 if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1749                         status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
1750                         status_printf_ln(s, GIT_COLOR_NORMAL,
1751                                          _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1752                                            "may speed it up, but you have to be careful not to forget to add\n"
1753                                            "new files yourself (see 'git help status')."),
1754                                          s->untracked_in_ms / 1000.0);
1755                 }
1756         } else if (s->committable)
1757                 status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1758                         s->hints
1759                         ? _(" (use -u option to show untracked files)") : "");
1760
1761         if (s->verbose)
1762                 wt_longstatus_print_verbose(s);
1763         if (!s->committable) {
1764                 if (s->amend)
1765                         status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1766                 else if (s->nowarn)
1767                         ; /* nothing */
1768                 else if (s->workdir_dirty) {
1769                         if (s->hints)
1770                                 printf(_("no changes added to commit "
1771                                          "(use \"git add\" and/or \"git commit -a\")\n"));
1772                         else
1773                                 printf(_("no changes added to commit\n"));
1774                 } else if (s->untracked.nr) {
1775                         if (s->hints)
1776                                 printf(_("nothing added to commit but untracked files "
1777                                          "present (use \"git add\" to track)\n"));
1778                         else
1779                                 printf(_("nothing added to commit but untracked files present\n"));
1780                 } else if (s->is_initial) {
1781                         if (s->hints)
1782                                 printf(_("nothing to commit (create/copy files "
1783                                          "and use \"git add\" to track)\n"));
1784                         else
1785                                 printf(_("nothing to commit\n"));
1786                 } else if (!s->show_untracked_files) {
1787                         if (s->hints)
1788                                 printf(_("nothing to commit (use -u to show untracked files)\n"));
1789                         else
1790                                 printf(_("nothing to commit\n"));
1791                 } else
1792                         printf(_("nothing to commit, working tree clean\n"));
1793         }
1794         if(s->show_stash)
1795                 wt_longstatus_print_stash_summary(s);
1796 }
1797
1798 static void wt_shortstatus_unmerged(struct string_list_item *it,
1799                            struct wt_status *s)
1800 {
1801         struct wt_status_change_data *d = it->util;
1802         const char *how = "??";
1803
1804         switch (d->stagemask) {
1805         case 1: how = "DD"; break; /* both deleted */
1806         case 2: how = "AU"; break; /* added by us */
1807         case 3: how = "UD"; break; /* deleted by them */
1808         case 4: how = "UA"; break; /* added by them */
1809         case 5: how = "DU"; break; /* deleted by us */
1810         case 6: how = "AA"; break; /* both added */
1811         case 7: how = "UU"; break; /* both modified */
1812         }
1813         color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1814         if (s->null_termination) {
1815                 fprintf(stdout, " %s%c", it->string, 0);
1816         } else {
1817                 struct strbuf onebuf = STRBUF_INIT;
1818                 const char *one;
1819                 one = quote_path(it->string, s->prefix, &onebuf);
1820                 printf(" %s\n", one);
1821                 strbuf_release(&onebuf);
1822         }
1823 }
1824
1825 static void wt_shortstatus_status(struct string_list_item *it,
1826                          struct wt_status *s)
1827 {
1828         struct wt_status_change_data *d = it->util;
1829
1830         if (d->index_status)
1831                 color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1832         else
1833                 putchar(' ');
1834         if (d->worktree_status)
1835                 color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1836         else
1837                 putchar(' ');
1838         putchar(' ');
1839         if (s->null_termination) {
1840                 fprintf(stdout, "%s%c", it->string, 0);
1841                 if (d->rename_source)
1842                         fprintf(stdout, "%s%c", d->rename_source, 0);
1843         } else {
1844                 struct strbuf onebuf = STRBUF_INIT;
1845                 const char *one;
1846
1847                 if (d->rename_source) {
1848                         one = quote_path(d->rename_source, s->prefix, &onebuf);
1849                         if (*one != '"' && strchr(one, ' ') != NULL) {
1850                                 putchar('"');
1851                                 strbuf_addch(&onebuf, '"');
1852                                 one = onebuf.buf;
1853                         }
1854                         printf("%s -> ", one);
1855                         strbuf_release(&onebuf);
1856                 }
1857                 one = quote_path(it->string, s->prefix, &onebuf);
1858                 if (*one != '"' && strchr(one, ' ') != NULL) {
1859                         putchar('"');
1860                         strbuf_addch(&onebuf, '"');
1861                         one = onebuf.buf;
1862                 }
1863                 printf("%s\n", one);
1864                 strbuf_release(&onebuf);
1865         }
1866 }
1867
1868 static void wt_shortstatus_other(struct string_list_item *it,
1869                                  struct wt_status *s, const char *sign)
1870 {
1871         if (s->null_termination) {
1872                 fprintf(stdout, "%s %s%c", sign, it->string, 0);
1873         } else {
1874                 struct strbuf onebuf = STRBUF_INIT;
1875                 const char *one;
1876                 one = quote_path(it->string, s->prefix, &onebuf);
1877                 color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1878                 printf(" %s\n", one);
1879                 strbuf_release(&onebuf);
1880         }
1881 }
1882
1883 static void wt_shortstatus_print_tracking(struct wt_status *s)
1884 {
1885         struct branch *branch;
1886         const char *header_color = color(WT_STATUS_HEADER, s);
1887         const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1888         const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1889
1890         const char *base;
1891         char *short_base;
1892         const char *branch_name;
1893         int num_ours, num_theirs, sti;
1894         int upstream_is_gone = 0;
1895
1896         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1897
1898         if (!s->branch)
1899                 return;
1900         branch_name = s->branch;
1901
1902 #define LABEL(string) (s->no_gettext ? (string) : _(string))
1903
1904         if (s->is_initial)
1905                 color_fprintf(s->fp, header_color, LABEL(N_("No commits yet on ")));
1906
1907         if (!strcmp(s->branch, "HEAD")) {
1908                 color_fprintf(s->fp, color(WT_STATUS_NOBRANCH, s), "%s",
1909                               LABEL(N_("HEAD (no branch)")));
1910                 goto conclude;
1911         }
1912
1913         skip_prefix(branch_name, "refs/heads/", &branch_name);
1914
1915         branch = branch_get(branch_name);
1916
1917         color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1918
1919         sti = stat_tracking_info(branch, &num_ours, &num_theirs, &base,
1920                                  0, s->ahead_behind_flags);
1921         if (sti < 0) {
1922                 if (!base)
1923                         goto conclude;
1924
1925                 upstream_is_gone = 1;
1926         }
1927
1928         short_base = shorten_unambiguous_ref(base, 0);
1929         color_fprintf(s->fp, header_color, "...");
1930         color_fprintf(s->fp, branch_color_remote, "%s", short_base);
1931         free(short_base);
1932
1933         if (!upstream_is_gone && !sti)
1934                 goto conclude;
1935
1936         color_fprintf(s->fp, header_color, " [");
1937         if (upstream_is_gone) {
1938                 color_fprintf(s->fp, header_color, LABEL(N_("gone")));
1939         } else if (s->ahead_behind_flags == AHEAD_BEHIND_QUICK) {
1940                 color_fprintf(s->fp, header_color, LABEL(N_("different")));
1941         } else if (!num_ours) {
1942                 color_fprintf(s->fp, header_color, LABEL(N_("behind ")));
1943                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1944         } else if (!num_theirs) {
1945                 color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1946                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1947         } else {
1948                 color_fprintf(s->fp, header_color, LABEL(N_("ahead ")));
1949                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1950                 color_fprintf(s->fp, header_color, ", %s", LABEL(N_("behind ")));
1951                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1952         }
1953
1954         color_fprintf(s->fp, header_color, "]");
1955  conclude:
1956         fputc(s->null_termination ? '\0' : '\n', s->fp);
1957 }
1958
1959 static void wt_shortstatus_print(struct wt_status *s)
1960 {
1961         struct string_list_item *it;
1962
1963         if (s->show_branch)
1964                 wt_shortstatus_print_tracking(s);
1965
1966         for_each_string_list_item(it, &s->change) {
1967                 struct wt_status_change_data *d = it->util;
1968
1969                 if (d->stagemask)
1970                         wt_shortstatus_unmerged(it, s);
1971                 else
1972                         wt_shortstatus_status(it, s);
1973         }
1974         for_each_string_list_item(it, &s->untracked)
1975                 wt_shortstatus_other(it, s, "??");
1976
1977         for_each_string_list_item(it, &s->ignored)
1978                 wt_shortstatus_other(it, s, "!!");
1979 }
1980
1981 static void wt_porcelain_print(struct wt_status *s)
1982 {
1983         s->use_color = 0;
1984         s->relative_paths = 0;
1985         s->prefix = NULL;
1986         s->no_gettext = 1;
1987         wt_shortstatus_print(s);
1988 }
1989
1990 /*
1991  * Print branch information for porcelain v2 output.  These lines
1992  * are printed when the '--branch' parameter is given.
1993  *
1994  *    # branch.oid <commit><eol>
1995  *    # branch.head <head><eol>
1996  *   [# branch.upstream <upstream><eol>
1997  *   [# branch.ab +<ahead> -<behind><eol>]]
1998  *
1999  *      <commit> ::= the current commit hash or the the literal
2000  *                   "(initial)" to indicate an initialized repo
2001  *                   with no commits.
2002  *
2003  *        <head> ::= <branch_name> the current branch name or
2004  *                   "(detached)" literal when detached head or
2005  *                   "(unknown)" when something is wrong.
2006  *
2007  *    <upstream> ::= the upstream branch name, when set.
2008  *
2009  *       <ahead> ::= integer ahead value or '?'.
2010  *
2011  *      <behind> ::= integer behind value or '?'.
2012  *
2013  * The end-of-line is defined by the -z flag.
2014  *
2015  *                 <eol> ::= NUL when -z,
2016  *                           LF when NOT -z.
2017  *
2018  * When an upstream is set and present, the 'branch.ab' line will
2019  * be printed with the ahead/behind counts for the branch and the
2020  * upstream.  When AHEAD_BEHIND_QUICK is requested and the branches
2021  * are different, '?' will be substituted for the actual count.
2022  */
2023 static void wt_porcelain_v2_print_tracking(struct wt_status *s)
2024 {
2025         struct branch *branch;
2026         const char *base;
2027         const char *branch_name;
2028         int ab_info, nr_ahead, nr_behind;
2029         char eol = s->null_termination ? '\0' : '\n';
2030
2031         fprintf(s->fp, "# branch.oid %s%c",
2032                         (s->is_initial ? "(initial)" : oid_to_hex(&s->oid_commit)),
2033                         eol);
2034
2035         if (!s->branch)
2036                 fprintf(s->fp, "# branch.head %s%c", "(unknown)", eol);
2037         else {
2038                 if (!strcmp(s->branch, "HEAD")) {
2039                         fprintf(s->fp, "# branch.head %s%c", "(detached)", eol);
2040
2041                         if (s->state.rebase_in_progress ||
2042                             s->state.rebase_interactive_in_progress)
2043                                 branch_name = s->state.onto;
2044                         else if (s->state.detached_from)
2045                                 branch_name = s->state.detached_from;
2046                         else
2047                                 branch_name = "";
2048                 } else {
2049                         branch_name = NULL;
2050                         skip_prefix(s->branch, "refs/heads/", &branch_name);
2051
2052                         fprintf(s->fp, "# branch.head %s%c", branch_name, eol);
2053                 }
2054
2055                 /* Lookup stats on the upstream tracking branch, if set. */
2056                 branch = branch_get(branch_name);
2057                 base = NULL;
2058                 ab_info = stat_tracking_info(branch, &nr_ahead, &nr_behind,
2059                                              &base, 0, s->ahead_behind_flags);
2060                 if (base) {
2061                         base = shorten_unambiguous_ref(base, 0);
2062                         fprintf(s->fp, "# branch.upstream %s%c", base, eol);
2063                         free((char *)base);
2064
2065                         if (ab_info > 0) {
2066                                 /* different */
2067                                 if (nr_ahead || nr_behind)
2068                                         fprintf(s->fp, "# branch.ab +%d -%d%c",
2069                                                 nr_ahead, nr_behind, eol);
2070                                 else
2071                                         fprintf(s->fp, "# branch.ab +? -?%c",
2072                                                 eol);
2073                         } else if (!ab_info) {
2074                                 /* same */
2075                                 fprintf(s->fp, "# branch.ab +0 -0%c", eol);
2076                         }
2077                 }
2078         }
2079 }
2080
2081 /*
2082  * Convert various submodule status values into a
2083  * fixed-length string of characters in the buffer provided.
2084  */
2085 static void wt_porcelain_v2_submodule_state(
2086         struct wt_status_change_data *d,
2087         char sub[5])
2088 {
2089         if (S_ISGITLINK(d->mode_head) ||
2090                 S_ISGITLINK(d->mode_index) ||
2091                 S_ISGITLINK(d->mode_worktree)) {
2092                 sub[0] = 'S';
2093                 sub[1] = d->new_submodule_commits ? 'C' : '.';
2094                 sub[2] = (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED) ? 'M' : '.';
2095                 sub[3] = (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) ? 'U' : '.';
2096         } else {
2097                 sub[0] = 'N';
2098                 sub[1] = '.';
2099                 sub[2] = '.';
2100                 sub[3] = '.';
2101         }
2102         sub[4] = 0;
2103 }
2104
2105 /*
2106  * Fix-up changed entries before we print them.
2107  */
2108 static void wt_porcelain_v2_fix_up_changed(struct string_list_item *it)
2109 {
2110         struct wt_status_change_data *d = it->util;
2111
2112         if (!d->index_status) {
2113                 /*
2114                  * This entry is unchanged in the index (relative to the head).
2115                  * Therefore, the collect_updated_cb was never called for this
2116                  * entry (during the head-vs-index scan) and so the head column
2117                  * fields were never set.
2118                  *
2119                  * We must have data for the index column (from the
2120                  * index-vs-worktree scan (otherwise, this entry should not be
2121                  * in the list of changes)).
2122                  *
2123                  * Copy index column fields to the head column, so that our
2124                  * output looks complete.
2125                  */
2126                 assert(d->mode_head == 0);
2127                 d->mode_head = d->mode_index;
2128                 oidcpy(&d->oid_head, &d->oid_index);
2129         }
2130
2131         if (!d->worktree_status) {
2132                 /*
2133                  * This entry is unchanged in the worktree (relative to the index).
2134                  * Therefore, the collect_changed_cb was never called for this entry
2135                  * (during the index-vs-worktree scan) and so the worktree column
2136                  * fields were never set.
2137                  *
2138                  * We must have data for the index column (from the head-vs-index
2139                  * scan).
2140                  *
2141                  * Copy the index column fields to the worktree column so that
2142                  * our output looks complete.
2143                  *
2144                  * Note that we only have a mode field in the worktree column
2145                  * because the scan code tries really hard to not have to compute it.
2146                  */
2147                 assert(d->mode_worktree == 0);
2148                 d->mode_worktree = d->mode_index;
2149         }
2150 }
2151
2152 /*
2153  * Print porcelain v2 info for tracked entries with changes.
2154  */
2155 static void wt_porcelain_v2_print_changed_entry(
2156         struct string_list_item *it,
2157         struct wt_status *s)
2158 {
2159         struct wt_status_change_data *d = it->util;
2160         struct strbuf buf = STRBUF_INIT;
2161         struct strbuf buf_from = STRBUF_INIT;
2162         const char *path = NULL;
2163         const char *path_from = NULL;
2164         char key[3];
2165         char submodule_token[5];
2166         char sep_char, eol_char;
2167
2168         wt_porcelain_v2_fix_up_changed(it);
2169         wt_porcelain_v2_submodule_state(d, submodule_token);
2170
2171         key[0] = d->index_status ? d->index_status : '.';
2172         key[1] = d->worktree_status ? d->worktree_status : '.';
2173         key[2] = 0;
2174
2175         if (s->null_termination) {
2176                 /*
2177                  * In -z mode, we DO NOT C-quote pathnames.  Current path is ALWAYS first.
2178                  * A single NUL character separates them.
2179                  */
2180                 sep_char = '\0';
2181                 eol_char = '\0';
2182                 path = it->string;
2183                 path_from = d->rename_source;
2184         } else {
2185                 /*
2186                  * Path(s) are C-quoted if necessary. Current path is ALWAYS first.
2187                  * The source path is only present when necessary.
2188                  * A single TAB separates them (because paths can contain spaces
2189                  * which are not escaped and C-quoting does escape TAB characters).
2190                  */
2191                 sep_char = '\t';
2192                 eol_char = '\n';
2193                 path = quote_path(it->string, s->prefix, &buf);
2194                 if (d->rename_source)
2195                         path_from = quote_path(d->rename_source, s->prefix, &buf_from);
2196         }
2197
2198         if (path_from)
2199                 fprintf(s->fp, "2 %s %s %06o %06o %06o %s %s %c%d %s%c%s%c",
2200                                 key, submodule_token,
2201                                 d->mode_head, d->mode_index, d->mode_worktree,
2202                                 oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2203                                 d->rename_status, d->rename_score,
2204                                 path, sep_char, path_from, eol_char);
2205         else
2206                 fprintf(s->fp, "1 %s %s %06o %06o %06o %s %s %s%c",
2207                                 key, submodule_token,
2208                                 d->mode_head, d->mode_index, d->mode_worktree,
2209                                 oid_to_hex(&d->oid_head), oid_to_hex(&d->oid_index),
2210                                 path, eol_char);
2211
2212         strbuf_release(&buf);
2213         strbuf_release(&buf_from);
2214 }
2215
2216 /*
2217  * Print porcelain v2 status info for unmerged entries.
2218  */
2219 static void wt_porcelain_v2_print_unmerged_entry(
2220         struct string_list_item *it,
2221         struct wt_status *s)
2222 {
2223         struct wt_status_change_data *d = it->util;
2224         struct index_state *istate = s->repo->index;
2225         const struct cache_entry *ce;
2226         struct strbuf buf_index = STRBUF_INIT;
2227         const char *path_index = NULL;
2228         int pos, stage, sum;
2229         struct {
2230                 int mode;
2231                 struct object_id oid;
2232         } stages[3];
2233         char *key;
2234         char submodule_token[5];
2235         char unmerged_prefix = 'u';
2236         char eol_char = s->null_termination ? '\0' : '\n';
2237
2238         wt_porcelain_v2_submodule_state(d, submodule_token);
2239
2240         switch (d->stagemask) {
2241         case 1: key = "DD"; break; /* both deleted */
2242         case 2: key = "AU"; break; /* added by us */
2243         case 3: key = "UD"; break; /* deleted by them */
2244         case 4: key = "UA"; break; /* added by them */
2245         case 5: key = "DU"; break; /* deleted by us */
2246         case 6: key = "AA"; break; /* both added */
2247         case 7: key = "UU"; break; /* both modified */
2248         default:
2249                 BUG("unhandled unmerged status %x", d->stagemask);
2250         }
2251
2252         /*
2253          * Disregard d.aux.porcelain_v2 data that we accumulated
2254          * for the head and index columns during the scans and
2255          * replace with the actual stage data.
2256          *
2257          * Note that this is a last-one-wins for each the individual
2258          * stage [123] columns in the event of multiple cache entries
2259          * for same stage.
2260          */
2261         memset(stages, 0, sizeof(stages));
2262         sum = 0;
2263         pos = index_name_pos(istate, it->string, strlen(it->string));
2264         assert(pos < 0);
2265         pos = -pos-1;
2266         while (pos < istate->cache_nr) {
2267                 ce = istate->cache[pos++];
2268                 stage = ce_stage(ce);
2269                 if (strcmp(ce->name, it->string) || !stage)
2270                         break;
2271                 stages[stage - 1].mode = ce->ce_mode;
2272                 oidcpy(&stages[stage - 1].oid, &ce->oid);
2273                 sum |= (1 << (stage - 1));
2274         }
2275         if (sum != d->stagemask)
2276                 BUG("observed stagemask 0x%x != expected stagemask 0x%x", sum, d->stagemask);
2277
2278         if (s->null_termination)
2279                 path_index = it->string;
2280         else
2281                 path_index = quote_path(it->string, s->prefix, &buf_index);
2282
2283         fprintf(s->fp, "%c %s %s %06o %06o %06o %06o %s %s %s %s%c",
2284                         unmerged_prefix, key, submodule_token,
2285                         stages[0].mode, /* stage 1 */
2286                         stages[1].mode, /* stage 2 */
2287                         stages[2].mode, /* stage 3 */
2288                         d->mode_worktree,
2289                         oid_to_hex(&stages[0].oid), /* stage 1 */
2290                         oid_to_hex(&stages[1].oid), /* stage 2 */
2291                         oid_to_hex(&stages[2].oid), /* stage 3 */
2292                         path_index,
2293                         eol_char);
2294
2295         strbuf_release(&buf_index);
2296 }
2297
2298 /*
2299  * Print porcelain V2 status info for untracked and ignored entries.
2300  */
2301 static void wt_porcelain_v2_print_other(
2302         struct string_list_item *it,
2303         struct wt_status *s,
2304         char prefix)
2305 {
2306         struct strbuf buf = STRBUF_INIT;
2307         const char *path;
2308         char eol_char;
2309
2310         if (s->null_termination) {
2311                 path = it->string;
2312                 eol_char = '\0';
2313         } else {
2314                 path = quote_path(it->string, s->prefix, &buf);
2315                 eol_char = '\n';
2316         }
2317
2318         fprintf(s->fp, "%c %s%c", prefix, path, eol_char);
2319
2320         strbuf_release(&buf);
2321 }
2322
2323 /*
2324  * Print porcelain V2 status.
2325  *
2326  * [<v2_branch>]
2327  * [<v2_changed_items>]*
2328  * [<v2_unmerged_items>]*
2329  * [<v2_untracked_items>]*
2330  * [<v2_ignored_items>]*
2331  *
2332  */
2333 static void wt_porcelain_v2_print(struct wt_status *s)
2334 {
2335         struct wt_status_change_data *d;
2336         struct string_list_item *it;
2337         int i;
2338
2339         if (s->show_branch)
2340                 wt_porcelain_v2_print_tracking(s);
2341
2342         for (i = 0; i < s->change.nr; i++) {
2343                 it = &(s->change.items[i]);
2344                 d = it->util;
2345                 if (!d->stagemask)
2346                         wt_porcelain_v2_print_changed_entry(it, s);
2347         }
2348
2349         for (i = 0; i < s->change.nr; i++) {
2350                 it = &(s->change.items[i]);
2351                 d = it->util;
2352                 if (d->stagemask)
2353                         wt_porcelain_v2_print_unmerged_entry(it, s);
2354         }
2355
2356         for (i = 0; i < s->untracked.nr; i++) {
2357                 it = &(s->untracked.items[i]);
2358                 wt_porcelain_v2_print_other(it, s, '?');
2359         }
2360
2361         for (i = 0; i < s->ignored.nr; i++) {
2362                 it = &(s->ignored.items[i]);
2363                 wt_porcelain_v2_print_other(it, s, '!');
2364         }
2365 }
2366
2367 void wt_status_print(struct wt_status *s)
2368 {
2369         trace2_data_intmax("status", s->repo, "count/changed", s->change.nr);
2370         trace2_data_intmax("status", s->repo, "count/untracked",
2371                            s->untracked.nr);
2372         trace2_data_intmax("status", s->repo, "count/ignored", s->ignored.nr);
2373
2374         trace2_region_enter("status", "print", s->repo);
2375
2376         switch (s->status_format) {
2377         case STATUS_FORMAT_SHORT:
2378                 wt_shortstatus_print(s);
2379                 break;
2380         case STATUS_FORMAT_PORCELAIN:
2381                 wt_porcelain_print(s);
2382                 break;
2383         case STATUS_FORMAT_PORCELAIN_V2:
2384                 wt_porcelain_v2_print(s);
2385                 break;
2386         case STATUS_FORMAT_UNSPECIFIED:
2387                 BUG("finalize_deferred_config() should have been called");
2388                 break;
2389         case STATUS_FORMAT_NONE:
2390         case STATUS_FORMAT_LONG:
2391                 wt_longstatus_print(s);
2392                 break;
2393         }
2394
2395         trace2_region_leave("status", "print", s->repo);
2396 }
2397
2398 /**
2399  * Returns 1 if there are unstaged changes, 0 otherwise.
2400  */
2401 int has_unstaged_changes(struct repository *r, int ignore_submodules)
2402 {
2403         struct rev_info rev_info;
2404         int result;
2405
2406         repo_init_revisions(r, &rev_info, NULL);
2407         if (ignore_submodules) {
2408                 rev_info.diffopt.flags.ignore_submodules = 1;
2409                 rev_info.diffopt.flags.override_submodule_config = 1;
2410         }
2411         rev_info.diffopt.flags.quick = 1;
2412         diff_setup_done(&rev_info.diffopt);
2413         result = run_diff_files(&rev_info, 0);
2414         return diff_result_code(&rev_info.diffopt, result);
2415 }
2416
2417 /**
2418  * Returns 1 if there are uncommitted changes, 0 otherwise.
2419  */
2420 int has_uncommitted_changes(struct repository *r,
2421                             int ignore_submodules)
2422 {
2423         struct rev_info rev_info;
2424         int result;
2425
2426         if (is_index_unborn(r->index))
2427                 return 0;
2428
2429         repo_init_revisions(r, &rev_info, NULL);
2430         if (ignore_submodules)
2431                 rev_info.diffopt.flags.ignore_submodules = 1;
2432         rev_info.diffopt.flags.quick = 1;
2433
2434         add_head_to_pending(&rev_info);
2435         if (!rev_info.pending.nr) {
2436                 /*
2437                  * We have no head (or it's corrupt); use the empty tree,
2438                  * which will complain if the index is non-empty.
2439                  */
2440                 struct tree *tree = lookup_tree(r, the_hash_algo->empty_tree);
2441                 add_pending_object(&rev_info, &tree->object, "");
2442         }
2443
2444         diff_setup_done(&rev_info.diffopt);
2445         result = run_diff_index(&rev_info, 1);
2446         return diff_result_code(&rev_info.diffopt, result);
2447 }
2448
2449 /**
2450  * If the work tree has unstaged or uncommitted changes, dies with the
2451  * appropriate message.
2452  */
2453 int require_clean_work_tree(struct repository *r,
2454                             const char *action,
2455                             const char *hint,
2456                             int ignore_submodules,
2457                             int gently)
2458 {
2459         struct lock_file lock_file = LOCK_INIT;
2460         int err = 0, fd;
2461
2462         fd = repo_hold_locked_index(r, &lock_file, 0);
2463         refresh_index(r->index, REFRESH_QUIET, NULL, NULL, NULL);
2464         if (0 <= fd)
2465                 repo_update_index_if_able(r, &lock_file);
2466         rollback_lock_file(&lock_file);
2467
2468         if (has_unstaged_changes(r, ignore_submodules)) {
2469                 /* TRANSLATORS: the action is e.g. "pull with rebase" */
2470                 error(_("cannot %s: You have unstaged changes."), _(action));
2471                 err = 1;
2472         }
2473
2474         if (has_uncommitted_changes(r, ignore_submodules)) {
2475                 if (err)
2476                         error(_("additionally, your index contains uncommitted changes."));
2477                 else
2478                         error(_("cannot %s: Your index contains uncommitted changes."),
2479                               _(action));
2480                 err = 1;
2481         }
2482
2483         if (err) {
2484                 if (hint)
2485                         error("%s", hint);
2486                 if (!gently)
2487                         exit(128);
2488         }
2489
2490         return err;
2491 }