Merge branch 'jk/capabilities-doc'
[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 "remote.h"
12 #include "refs.h"
13 #include "submodule.h"
14 #include "column.h"
15 #include "strbuf.h"
16
17 static char default_wt_status_colors[][COLOR_MAXLEN] = {
18         GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
19         GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
20         GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
21         GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
22         GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
23         GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
24         GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
25         GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
26         GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
27 };
28
29 static const char *color(int slot, struct wt_status *s)
30 {
31         const char *c = "";
32         if (want_color(s->use_color))
33                 c = s->color_palette[slot];
34         if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
35                 c = s->color_palette[WT_STATUS_HEADER];
36         return c;
37 }
38
39 static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
40                 const char *fmt, va_list ap, const char *trail)
41 {
42         struct strbuf sb = STRBUF_INIT;
43         struct strbuf linebuf = STRBUF_INIT;
44         const char *line, *eol;
45
46         strbuf_vaddf(&sb, fmt, ap);
47         if (!sb.len) {
48                 strbuf_addch(&sb, comment_line_char);
49                 if (!trail)
50                         strbuf_addch(&sb, ' ');
51                 color_print_strbuf(s->fp, color, &sb);
52                 if (trail)
53                         fprintf(s->fp, "%s", trail);
54                 strbuf_release(&sb);
55                 return;
56         }
57         for (line = sb.buf; *line; line = eol + 1) {
58                 eol = strchr(line, '\n');
59
60                 strbuf_reset(&linebuf);
61                 if (at_bol) {
62                         strbuf_addch(&linebuf, comment_line_char);
63                         if (*line != '\n' && *line != '\t')
64                                 strbuf_addch(&linebuf, ' ');
65                 }
66                 if (eol)
67                         strbuf_add(&linebuf, line, eol - line);
68                 else
69                         strbuf_addstr(&linebuf, line);
70                 color_print_strbuf(s->fp, color, &linebuf);
71                 if (eol)
72                         fprintf(s->fp, "\n");
73                 else
74                         break;
75                 at_bol = 1;
76         }
77         if (trail)
78                 fprintf(s->fp, "%s", trail);
79         strbuf_release(&linebuf);
80         strbuf_release(&sb);
81 }
82
83 void status_printf_ln(struct wt_status *s, const char *color,
84                         const char *fmt, ...)
85 {
86         va_list ap;
87
88         va_start(ap, fmt);
89         status_vprintf(s, 1, color, fmt, ap, "\n");
90         va_end(ap);
91 }
92
93 void status_printf(struct wt_status *s, const char *color,
94                         const char *fmt, ...)
95 {
96         va_list ap;
97
98         va_start(ap, fmt);
99         status_vprintf(s, 1, color, fmt, ap, NULL);
100         va_end(ap);
101 }
102
103 static void status_printf_more(struct wt_status *s, const char *color,
104                                const char *fmt, ...)
105 {
106         va_list ap;
107
108         va_start(ap, fmt);
109         status_vprintf(s, 0, color, fmt, ap, NULL);
110         va_end(ap);
111 }
112
113 void wt_status_prepare(struct wt_status *s)
114 {
115         unsigned char sha1[20];
116
117         memset(s, 0, sizeof(*s));
118         memcpy(s->color_palette, default_wt_status_colors,
119                sizeof(default_wt_status_colors));
120         s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
121         s->use_color = -1;
122         s->relative_paths = 1;
123         s->branch = resolve_refdup("HEAD", sha1, 0, NULL);
124         s->reference = "HEAD";
125         s->fp = stdout;
126         s->index_file = get_index_file();
127         s->change.strdup_strings = 1;
128         s->untracked.strdup_strings = 1;
129         s->ignored.strdup_strings = 1;
130         s->show_branch = -1;  /* unspecified */
131 }
132
133 static void wt_status_print_unmerged_header(struct wt_status *s)
134 {
135         int i;
136         int del_mod_conflict = 0;
137         int both_deleted = 0;
138         int not_deleted = 0;
139         const char *c = color(WT_STATUS_HEADER, s);
140
141         status_printf_ln(s, c, _("Unmerged paths:"));
142
143         for (i = 0; i < s->change.nr; i++) {
144                 struct string_list_item *it = &(s->change.items[i]);
145                 struct wt_status_change_data *d = it->util;
146
147                 switch (d->stagemask) {
148                 case 0:
149                         break;
150                 case 1:
151                         both_deleted = 1;
152                         break;
153                 case 3:
154                 case 5:
155                         del_mod_conflict = 1;
156                         break;
157                 default:
158                         not_deleted = 1;
159                         break;
160                 }
161         }
162
163         if (!advice_status_hints)
164                 return;
165         if (s->whence != FROM_COMMIT)
166                 ;
167         else if (!s->is_initial)
168                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
169         else
170                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
171
172         if (!both_deleted) {
173                 if (!del_mod_conflict)
174                         status_printf_ln(s, c, _("  (use \"git add <file>...\" to mark resolution)"));
175                 else
176                         status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
177         } else if (!del_mod_conflict && !not_deleted) {
178                 status_printf_ln(s, c, _("  (use \"git rm <file>...\" to mark resolution)"));
179         } else {
180                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
181         }
182         status_printf_ln(s, c, "");
183 }
184
185 static void wt_status_print_cached_header(struct wt_status *s)
186 {
187         const char *c = color(WT_STATUS_HEADER, s);
188
189         status_printf_ln(s, c, _("Changes to be committed:"));
190         if (!advice_status_hints)
191                 return;
192         if (s->whence != FROM_COMMIT)
193                 ; /* NEEDSWORK: use "git reset --unresolve"??? */
194         else if (!s->is_initial)
195                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
196         else
197                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
198         status_printf_ln(s, c, "");
199 }
200
201 static void wt_status_print_dirty_header(struct wt_status *s,
202                                          int has_deleted,
203                                          int has_dirty_submodules)
204 {
205         const char *c = color(WT_STATUS_HEADER, s);
206
207         status_printf_ln(s, c, _("Changes not staged for commit:"));
208         if (!advice_status_hints)
209                 return;
210         if (!has_deleted)
211                 status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
212         else
213                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
214         status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
215         if (has_dirty_submodules)
216                 status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
217         status_printf_ln(s, c, "");
218 }
219
220 static void wt_status_print_other_header(struct wt_status *s,
221                                          const char *what,
222                                          const char *how)
223 {
224         const char *c = color(WT_STATUS_HEADER, s);
225         status_printf_ln(s, c, "%s:", what);
226         if (!advice_status_hints)
227                 return;
228         status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
229         status_printf_ln(s, c, "");
230 }
231
232 static void wt_status_print_trailer(struct wt_status *s)
233 {
234         status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
235 }
236
237 #define quote_path quote_path_relative
238
239 static void wt_status_print_unmerged_data(struct wt_status *s,
240                                           struct string_list_item *it)
241 {
242         const char *c = color(WT_STATUS_UNMERGED, s);
243         struct wt_status_change_data *d = it->util;
244         struct strbuf onebuf = STRBUF_INIT;
245         const char *one, *how = _("bug");
246
247         one = quote_path(it->string, s->prefix, &onebuf);
248         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
249         switch (d->stagemask) {
250         case 1: how = _("both deleted:"); break;
251         case 2: how = _("added by us:"); break;
252         case 3: how = _("deleted by them:"); break;
253         case 4: how = _("added by them:"); break;
254         case 5: how = _("deleted by us:"); break;
255         case 6: how = _("both added:"); break;
256         case 7: how = _("both modified:"); break;
257         }
258         status_printf_more(s, c, "%-20s%s\n", how, one);
259         strbuf_release(&onebuf);
260 }
261
262 static void wt_status_print_change_data(struct wt_status *s,
263                                         int change_type,
264                                         struct string_list_item *it)
265 {
266         struct wt_status_change_data *d = it->util;
267         const char *c = color(change_type, s);
268         int status;
269         char *one_name;
270         char *two_name;
271         const char *one, *two;
272         struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
273         struct strbuf extra = STRBUF_INIT;
274
275         one_name = two_name = it->string;
276         switch (change_type) {
277         case WT_STATUS_UPDATED:
278                 status = d->index_status;
279                 if (d->head_path)
280                         one_name = d->head_path;
281                 break;
282         case WT_STATUS_CHANGED:
283                 if (d->new_submodule_commits || d->dirty_submodule) {
284                         strbuf_addstr(&extra, " (");
285                         if (d->new_submodule_commits)
286                                 strbuf_addf(&extra, _("new commits, "));
287                         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
288                                 strbuf_addf(&extra, _("modified content, "));
289                         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
290                                 strbuf_addf(&extra, _("untracked content, "));
291                         strbuf_setlen(&extra, extra.len - 2);
292                         strbuf_addch(&extra, ')');
293                 }
294                 status = d->worktree_status;
295                 break;
296         default:
297                 die("BUG: unhandled change_type %d in wt_status_print_change_data",
298                     change_type);
299         }
300
301         one = quote_path(one_name, s->prefix, &onebuf);
302         two = quote_path(two_name, s->prefix, &twobuf);
303
304         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
305         switch (status) {
306         case DIFF_STATUS_ADDED:
307                 status_printf_more(s, c, _("new file:   %s"), one);
308                 break;
309         case DIFF_STATUS_COPIED:
310                 status_printf_more(s, c, _("copied:     %s -> %s"), one, two);
311                 break;
312         case DIFF_STATUS_DELETED:
313                 status_printf_more(s, c, _("deleted:    %s"), one);
314                 break;
315         case DIFF_STATUS_MODIFIED:
316                 status_printf_more(s, c, _("modified:   %s"), one);
317                 break;
318         case DIFF_STATUS_RENAMED:
319                 status_printf_more(s, c, _("renamed:    %s -> %s"), one, two);
320                 break;
321         case DIFF_STATUS_TYPE_CHANGED:
322                 status_printf_more(s, c, _("typechange: %s"), one);
323                 break;
324         case DIFF_STATUS_UNKNOWN:
325                 status_printf_more(s, c, _("unknown:    %s"), one);
326                 break;
327         case DIFF_STATUS_UNMERGED:
328                 status_printf_more(s, c, _("unmerged:   %s"), one);
329                 break;
330         default:
331                 die(_("bug: unhandled diff status %c"), status);
332         }
333         if (extra.len) {
334                 status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
335                 strbuf_release(&extra);
336         }
337         status_printf_more(s, GIT_COLOR_NORMAL, "\n");
338         strbuf_release(&onebuf);
339         strbuf_release(&twobuf);
340 }
341
342 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
343                                          struct diff_options *options,
344                                          void *data)
345 {
346         struct wt_status *s = data;
347         int i;
348
349         if (!q->nr)
350                 return;
351         s->workdir_dirty = 1;
352         for (i = 0; i < q->nr; i++) {
353                 struct diff_filepair *p;
354                 struct string_list_item *it;
355                 struct wt_status_change_data *d;
356
357                 p = q->queue[i];
358                 it = string_list_insert(&s->change, p->one->path);
359                 d = it->util;
360                 if (!d) {
361                         d = xcalloc(1, sizeof(*d));
362                         it->util = d;
363                 }
364                 if (!d->worktree_status)
365                         d->worktree_status = p->status;
366                 d->dirty_submodule = p->two->dirty_submodule;
367                 if (S_ISGITLINK(p->two->mode))
368                         d->new_submodule_commits = !!hashcmp(p->one->sha1, p->two->sha1);
369         }
370 }
371
372 static int unmerged_mask(const char *path)
373 {
374         int pos, mask;
375         const struct cache_entry *ce;
376
377         pos = cache_name_pos(path, strlen(path));
378         if (0 <= pos)
379                 return 0;
380
381         mask = 0;
382         pos = -pos-1;
383         while (pos < active_nr) {
384                 ce = active_cache[pos++];
385                 if (strcmp(ce->name, path) || !ce_stage(ce))
386                         break;
387                 mask |= (1 << (ce_stage(ce) - 1));
388         }
389         return mask;
390 }
391
392 static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
393                                          struct diff_options *options,
394                                          void *data)
395 {
396         struct wt_status *s = data;
397         int i;
398
399         for (i = 0; i < q->nr; i++) {
400                 struct diff_filepair *p;
401                 struct string_list_item *it;
402                 struct wt_status_change_data *d;
403
404                 p = q->queue[i];
405                 it = string_list_insert(&s->change, p->two->path);
406                 d = it->util;
407                 if (!d) {
408                         d = xcalloc(1, sizeof(*d));
409                         it->util = d;
410                 }
411                 if (!d->index_status)
412                         d->index_status = p->status;
413                 switch (p->status) {
414                 case DIFF_STATUS_COPIED:
415                 case DIFF_STATUS_RENAMED:
416                         d->head_path = xstrdup(p->one->path);
417                         break;
418                 case DIFF_STATUS_UNMERGED:
419                         d->stagemask = unmerged_mask(p->two->path);
420                         break;
421                 }
422         }
423 }
424
425 static void wt_status_collect_changes_worktree(struct wt_status *s)
426 {
427         struct rev_info rev;
428
429         init_revisions(&rev, NULL);
430         setup_revisions(0, NULL, &rev, NULL);
431         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
432         DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
433         if (!s->show_untracked_files)
434                 DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
435         if (s->ignore_submodule_arg) {
436                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
437                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
438         }
439         rev.diffopt.format_callback = wt_status_collect_changed_cb;
440         rev.diffopt.format_callback_data = s;
441         init_pathspec(&rev.prune_data, s->pathspec);
442         run_diff_files(&rev, 0);
443 }
444
445 static void wt_status_collect_changes_index(struct wt_status *s)
446 {
447         struct rev_info rev;
448         struct setup_revision_opt opt;
449
450         init_revisions(&rev, NULL);
451         memset(&opt, 0, sizeof(opt));
452         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
453         setup_revisions(0, NULL, &rev, &opt);
454
455         if (s->ignore_submodule_arg) {
456                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
457                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
458         }
459
460         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
461         rev.diffopt.format_callback = wt_status_collect_updated_cb;
462         rev.diffopt.format_callback_data = s;
463         rev.diffopt.detect_rename = 1;
464         rev.diffopt.rename_limit = 200;
465         rev.diffopt.break_opt = 0;
466         init_pathspec(&rev.prune_data, s->pathspec);
467         run_diff_index(&rev, 1);
468 }
469
470 static void wt_status_collect_changes_initial(struct wt_status *s)
471 {
472         struct pathspec pathspec;
473         int i;
474
475         init_pathspec(&pathspec, s->pathspec);
476         for (i = 0; i < active_nr; i++) {
477                 struct string_list_item *it;
478                 struct wt_status_change_data *d;
479                 const struct cache_entry *ce = active_cache[i];
480
481                 if (!ce_path_match(ce, &pathspec))
482                         continue;
483                 it = string_list_insert(&s->change, ce->name);
484                 d = it->util;
485                 if (!d) {
486                         d = xcalloc(1, sizeof(*d));
487                         it->util = d;
488                 }
489                 if (ce_stage(ce)) {
490                         d->index_status = DIFF_STATUS_UNMERGED;
491                         d->stagemask |= (1 << (ce_stage(ce) - 1));
492                 }
493                 else
494                         d->index_status = DIFF_STATUS_ADDED;
495         }
496         free_pathspec(&pathspec);
497 }
498
499 static void wt_status_collect_untracked(struct wt_status *s)
500 {
501         int i;
502         struct dir_struct dir;
503         struct timeval t_begin;
504
505         if (!s->show_untracked_files)
506                 return;
507
508         if (advice_status_u_option)
509                 gettimeofday(&t_begin, NULL);
510
511         memset(&dir, 0, sizeof(dir));
512         if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
513                 dir.flags |=
514                         DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
515         if (s->show_ignored_files)
516                 dir.flags |= DIR_SHOW_IGNORED_TOO;
517         setup_standard_excludes(&dir);
518
519         fill_directory(&dir, s->pathspec);
520
521         for (i = 0; i < dir.nr; i++) {
522                 struct dir_entry *ent = dir.entries[i];
523                 if (cache_name_is_other(ent->name, ent->len) &&
524                     match_pathspec(s->pathspec, ent->name, ent->len, 0, NULL))
525                         string_list_insert(&s->untracked, ent->name);
526                 free(ent);
527         }
528
529         for (i = 0; i < dir.ignored_nr; i++) {
530                 struct dir_entry *ent = dir.ignored[i];
531                 if (cache_name_is_other(ent->name, ent->len) &&
532                     match_pathspec(s->pathspec, ent->name, ent->len, 0, NULL))
533                         string_list_insert(&s->ignored, ent->name);
534                 free(ent);
535         }
536
537         free(dir.entries);
538         free(dir.ignored);
539         clear_directory(&dir);
540
541         if (advice_status_u_option) {
542                 struct timeval t_end;
543                 gettimeofday(&t_end, NULL);
544                 s->untracked_in_ms =
545                         (uint64_t)t_end.tv_sec * 1000 + t_end.tv_usec / 1000 -
546                         ((uint64_t)t_begin.tv_sec * 1000 + t_begin.tv_usec / 1000);
547         }
548 }
549
550 void wt_status_collect(struct wt_status *s)
551 {
552         wt_status_collect_changes_worktree(s);
553
554         if (s->is_initial)
555                 wt_status_collect_changes_initial(s);
556         else
557                 wt_status_collect_changes_index(s);
558         wt_status_collect_untracked(s);
559 }
560
561 static void wt_status_print_unmerged(struct wt_status *s)
562 {
563         int shown_header = 0;
564         int i;
565
566         for (i = 0; i < s->change.nr; i++) {
567                 struct wt_status_change_data *d;
568                 struct string_list_item *it;
569                 it = &(s->change.items[i]);
570                 d = it->util;
571                 if (!d->stagemask)
572                         continue;
573                 if (!shown_header) {
574                         wt_status_print_unmerged_header(s);
575                         shown_header = 1;
576                 }
577                 wt_status_print_unmerged_data(s, it);
578         }
579         if (shown_header)
580                 wt_status_print_trailer(s);
581
582 }
583
584 static void wt_status_print_updated(struct wt_status *s)
585 {
586         int shown_header = 0;
587         int i;
588
589         for (i = 0; i < s->change.nr; i++) {
590                 struct wt_status_change_data *d;
591                 struct string_list_item *it;
592                 it = &(s->change.items[i]);
593                 d = it->util;
594                 if (!d->index_status ||
595                     d->index_status == DIFF_STATUS_UNMERGED)
596                         continue;
597                 if (!shown_header) {
598                         wt_status_print_cached_header(s);
599                         s->commitable = 1;
600                         shown_header = 1;
601                 }
602                 wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
603         }
604         if (shown_header)
605                 wt_status_print_trailer(s);
606 }
607
608 /*
609  * -1 : has delete
610  *  0 : no change
611  *  1 : some change but no delete
612  */
613 static int wt_status_check_worktree_changes(struct wt_status *s,
614                                              int *dirty_submodules)
615 {
616         int i;
617         int changes = 0;
618
619         *dirty_submodules = 0;
620
621         for (i = 0; i < s->change.nr; i++) {
622                 struct wt_status_change_data *d;
623                 d = s->change.items[i].util;
624                 if (!d->worktree_status ||
625                     d->worktree_status == DIFF_STATUS_UNMERGED)
626                         continue;
627                 if (!changes)
628                         changes = 1;
629                 if (d->dirty_submodule)
630                         *dirty_submodules = 1;
631                 if (d->worktree_status == DIFF_STATUS_DELETED)
632                         changes = -1;
633         }
634         return changes;
635 }
636
637 static void wt_status_print_changed(struct wt_status *s)
638 {
639         int i, dirty_submodules;
640         int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
641
642         if (!worktree_changes)
643                 return;
644
645         wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
646
647         for (i = 0; i < s->change.nr; i++) {
648                 struct wt_status_change_data *d;
649                 struct string_list_item *it;
650                 it = &(s->change.items[i]);
651                 d = it->util;
652                 if (!d->worktree_status ||
653                     d->worktree_status == DIFF_STATUS_UNMERGED)
654                         continue;
655                 wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
656         }
657         wt_status_print_trailer(s);
658 }
659
660 static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
661 {
662         struct child_process sm_summary;
663         char summary_limit[64];
664         char index[PATH_MAX];
665         const char *env[] = { NULL, NULL };
666         const char *argv[8];
667
668         env[0] =        index;
669         argv[0] =       "submodule";
670         argv[1] =       "summary";
671         argv[2] =       uncommitted ? "--files" : "--cached";
672         argv[3] =       "--for-status";
673         argv[4] =       "--summary-limit";
674         argv[5] =       summary_limit;
675         argv[6] =       uncommitted ? NULL : (s->amend ? "HEAD^" : "HEAD");
676         argv[7] =       NULL;
677
678         sprintf(summary_limit, "%d", s->submodule_summary);
679         snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", s->index_file);
680
681         memset(&sm_summary, 0, sizeof(sm_summary));
682         sm_summary.argv = argv;
683         sm_summary.env = env;
684         sm_summary.git_cmd = 1;
685         sm_summary.no_stdin = 1;
686         fflush(s->fp);
687         sm_summary.out = dup(fileno(s->fp));    /* run_command closes it */
688         run_command(&sm_summary);
689 }
690
691 static void wt_status_print_other(struct wt_status *s,
692                                   struct string_list *l,
693                                   const char *what,
694                                   const char *how)
695 {
696         int i;
697         struct strbuf buf = STRBUF_INIT;
698         static struct string_list output = STRING_LIST_INIT_DUP;
699         struct column_options copts;
700
701         if (!l->nr)
702                 return;
703
704         wt_status_print_other_header(s, what, how);
705
706         for (i = 0; i < l->nr; i++) {
707                 struct string_list_item *it;
708                 const char *path;
709                 it = &(l->items[i]);
710                 path = quote_path(it->string, s->prefix, &buf);
711                 if (column_active(s->colopts)) {
712                         string_list_append(&output, path);
713                         continue;
714                 }
715                 status_printf(s, color(WT_STATUS_HEADER, s), "\t");
716                 status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
717                                    "%s\n", path);
718         }
719
720         strbuf_release(&buf);
721         if (!column_active(s->colopts))
722                 return;
723
724         strbuf_addf(&buf, "%s#\t%s",
725                     color(WT_STATUS_HEADER, s),
726                     color(WT_STATUS_UNTRACKED, s));
727         memset(&copts, 0, sizeof(copts));
728         copts.padding = 1;
729         copts.indent = buf.buf;
730         if (want_color(s->use_color))
731                 copts.nl = GIT_COLOR_RESET "\n";
732         print_columns(&output, s->colopts, &copts);
733         string_list_clear(&output, 0);
734         strbuf_release(&buf);
735 }
736
737 static void wt_status_print_verbose(struct wt_status *s)
738 {
739         struct rev_info rev;
740         struct setup_revision_opt opt;
741
742         init_revisions(&rev, NULL);
743         DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
744
745         memset(&opt, 0, sizeof(opt));
746         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
747         setup_revisions(0, NULL, &rev, &opt);
748
749         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
750         rev.diffopt.detect_rename = 1;
751         rev.diffopt.file = s->fp;
752         rev.diffopt.close_file = 0;
753         /*
754          * If we're not going to stdout, then we definitely don't
755          * want color, since we are going to the commit message
756          * file (and even the "auto" setting won't work, since it
757          * will have checked isatty on stdout).
758          */
759         if (s->fp != stdout)
760                 rev.diffopt.use_color = 0;
761         run_diff_index(&rev, 1);
762 }
763
764 static void wt_status_print_tracking(struct wt_status *s)
765 {
766         struct strbuf sb = STRBUF_INIT;
767         const char *cp, *ep;
768         struct branch *branch;
769
770         assert(s->branch && !s->is_initial);
771         if (prefixcmp(s->branch, "refs/heads/"))
772                 return;
773         branch = branch_get(s->branch + 11);
774         if (!format_tracking_info(branch, &sb))
775                 return;
776
777         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
778                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
779                                  "%c %.*s", comment_line_char,
780                                  (int)(ep - cp), cp);
781         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
782                          comment_line_char);
783 }
784
785 static int has_unmerged(struct wt_status *s)
786 {
787         int i;
788
789         for (i = 0; i < s->change.nr; i++) {
790                 struct wt_status_change_data *d;
791                 d = s->change.items[i].util;
792                 if (d->stagemask)
793                         return 1;
794         }
795         return 0;
796 }
797
798 static void show_merge_in_progress(struct wt_status *s,
799                                 struct wt_status_state *state,
800                                 const char *color)
801 {
802         if (has_unmerged(s)) {
803                 status_printf_ln(s, color, _("You have unmerged paths."));
804                 if (advice_status_hints)
805                         status_printf_ln(s, color,
806                                 _("  (fix conflicts and run \"git commit\")"));
807         } else {
808                 status_printf_ln(s, color,
809                         _("All conflicts fixed but you are still merging."));
810                 if (advice_status_hints)
811                         status_printf_ln(s, color,
812                                 _("  (use \"git commit\" to conclude merge)"));
813         }
814         wt_status_print_trailer(s);
815 }
816
817 static void show_am_in_progress(struct wt_status *s,
818                                 struct wt_status_state *state,
819                                 const char *color)
820 {
821         status_printf_ln(s, color,
822                 _("You are in the middle of an am session."));
823         if (state->am_empty_patch)
824                 status_printf_ln(s, color,
825                         _("The current patch is empty."));
826         if (advice_status_hints) {
827                 if (!state->am_empty_patch)
828                         status_printf_ln(s, color,
829                                 _("  (fix conflicts and then run \"git am --continue\")"));
830                 status_printf_ln(s, color,
831                         _("  (use \"git am --skip\" to skip this patch)"));
832                 status_printf_ln(s, color,
833                         _("  (use \"git am --abort\" to restore the original branch)"));
834         }
835         wt_status_print_trailer(s);
836 }
837
838 static char *read_line_from_git_path(const char *filename)
839 {
840         struct strbuf buf = STRBUF_INIT;
841         FILE *fp = fopen(git_path("%s", filename), "r");
842         if (!fp) {
843                 strbuf_release(&buf);
844                 return NULL;
845         }
846         strbuf_getline(&buf, fp, '\n');
847         if (!fclose(fp)) {
848                 return strbuf_detach(&buf, NULL);
849         } else {
850                 strbuf_release(&buf);
851                 return NULL;
852         }
853 }
854
855 static int split_commit_in_progress(struct wt_status *s)
856 {
857         int split_in_progress = 0;
858         char *head = read_line_from_git_path("HEAD");
859         char *orig_head = read_line_from_git_path("ORIG_HEAD");
860         char *rebase_amend = read_line_from_git_path("rebase-merge/amend");
861         char *rebase_orig_head = read_line_from_git_path("rebase-merge/orig-head");
862
863         if (!head || !orig_head || !rebase_amend || !rebase_orig_head ||
864             !s->branch || strcmp(s->branch, "HEAD"))
865                 return split_in_progress;
866
867         if (!strcmp(rebase_amend, rebase_orig_head)) {
868                 if (strcmp(head, rebase_amend))
869                         split_in_progress = 1;
870         } else if (strcmp(orig_head, rebase_orig_head)) {
871                 split_in_progress = 1;
872         }
873
874         if (!s->amend && !s->nowarn && !s->workdir_dirty)
875                 split_in_progress = 0;
876
877         free(head);
878         free(orig_head);
879         free(rebase_amend);
880         free(rebase_orig_head);
881         return split_in_progress;
882 }
883
884 static void show_rebase_in_progress(struct wt_status *s,
885                                 struct wt_status_state *state,
886                                 const char *color)
887 {
888         struct stat st;
889
890         if (has_unmerged(s)) {
891                 if (state->branch)
892                         status_printf_ln(s, color,
893                                          _("You are currently rebasing branch '%s' on '%s'."),
894                                          state->branch,
895                                          state->onto);
896                 else
897                         status_printf_ln(s, color,
898                                          _("You are currently rebasing."));
899                 if (advice_status_hints) {
900                         status_printf_ln(s, color,
901                                 _("  (fix conflicts and then run \"git rebase --continue\")"));
902                         status_printf_ln(s, color,
903                                 _("  (use \"git rebase --skip\" to skip this patch)"));
904                         status_printf_ln(s, color,
905                                 _("  (use \"git rebase --abort\" to check out the original branch)"));
906                 }
907         } else if (state->rebase_in_progress || !stat(git_path("MERGE_MSG"), &st)) {
908                 if (state->branch)
909                         status_printf_ln(s, color,
910                                          _("You are currently rebasing branch '%s' on '%s'."),
911                                          state->branch,
912                                          state->onto);
913                 else
914                         status_printf_ln(s, color,
915                                          _("You are currently rebasing."));
916                 if (advice_status_hints)
917                         status_printf_ln(s, color,
918                                 _("  (all conflicts fixed: run \"git rebase --continue\")"));
919         } else if (split_commit_in_progress(s)) {
920                 if (state->branch)
921                         status_printf_ln(s, color,
922                                          _("You are currently splitting a commit while rebasing branch '%s' on '%s'."),
923                                          state->branch,
924                                          state->onto);
925                 else
926                         status_printf_ln(s, color,
927                                          _("You are currently splitting a commit during a rebase."));
928                 if (advice_status_hints)
929                         status_printf_ln(s, color,
930                                 _("  (Once your working directory is clean, run \"git rebase --continue\")"));
931         } else {
932                 if (state->branch)
933                         status_printf_ln(s, color,
934                                          _("You are currently editing a commit while rebasing branch '%s' on '%s'."),
935                                          state->branch,
936                                          state->onto);
937                 else
938                         status_printf_ln(s, color,
939                                          _("You are currently editing a commit during a rebase."));
940                 if (advice_status_hints && !s->amend) {
941                         status_printf_ln(s, color,
942                                 _("  (use \"git commit --amend\" to amend the current commit)"));
943                         status_printf_ln(s, color,
944                                 _("  (use \"git rebase --continue\" once you are satisfied with your changes)"));
945                 }
946         }
947         wt_status_print_trailer(s);
948 }
949
950 static void show_cherry_pick_in_progress(struct wt_status *s,
951                                         struct wt_status_state *state,
952                                         const char *color)
953 {
954         status_printf_ln(s, color, _("You are currently cherry-picking."));
955         if (advice_status_hints) {
956                 if (has_unmerged(s))
957                         status_printf_ln(s, color,
958                                 _("  (fix conflicts and run \"git cherry-pick --continue\")"));
959                 else
960                         status_printf_ln(s, color,
961                                 _("  (all conflicts fixed: run \"git cherry-pick --continue\")"));
962                 status_printf_ln(s, color,
963                         _("  (use \"git cherry-pick --abort\" to cancel the cherry-pick operation)"));
964         }
965         wt_status_print_trailer(s);
966 }
967
968 static void show_revert_in_progress(struct wt_status *s,
969                                         struct wt_status_state *state,
970                                         const char *color)
971 {
972         status_printf_ln(s, color, _("You are currently reverting commit %s."),
973                          find_unique_abbrev(state->revert_head_sha1, DEFAULT_ABBREV));
974         if (advice_status_hints) {
975                 if (has_unmerged(s))
976                         status_printf_ln(s, color,
977                                 _("  (fix conflicts and run \"git revert --continue\")"));
978                 else
979                         status_printf_ln(s, color,
980                                 _("  (all conflicts fixed: run \"git revert --continue\")"));
981                 status_printf_ln(s, color,
982                         _("  (use \"git revert --abort\" to cancel the revert operation)"));
983         }
984         wt_status_print_trailer(s);
985 }
986
987 static void show_bisect_in_progress(struct wt_status *s,
988                                 struct wt_status_state *state,
989                                 const char *color)
990 {
991         if (state->branch)
992                 status_printf_ln(s, color,
993                                  _("You are currently bisecting, started from branch '%s'."),
994                                  state->branch);
995         else
996                 status_printf_ln(s, color,
997                                  _("You are currently bisecting."));
998         if (advice_status_hints)
999                 status_printf_ln(s, color,
1000                         _("  (use \"git bisect reset\" to get back to the original branch)"));
1001         wt_status_print_trailer(s);
1002 }
1003
1004 /*
1005  * Extract branch information from rebase/bisect
1006  */
1007 static char *read_and_strip_branch(const char *path)
1008 {
1009         struct strbuf sb = STRBUF_INIT;
1010         unsigned char sha1[20];
1011
1012         if (strbuf_read_file(&sb, git_path("%s", path), 0) <= 0)
1013                 goto got_nothing;
1014
1015         while (&sb.len && sb.buf[sb.len - 1] == '\n')
1016                 strbuf_setlen(&sb, sb.len - 1);
1017         if (!sb.len)
1018                 goto got_nothing;
1019         if (!prefixcmp(sb.buf, "refs/heads/"))
1020                 strbuf_remove(&sb,0, strlen("refs/heads/"));
1021         else if (!prefixcmp(sb.buf, "refs/"))
1022                 ;
1023         else if (!get_sha1_hex(sb.buf, sha1)) {
1024                 const char *abbrev;
1025                 abbrev = find_unique_abbrev(sha1, DEFAULT_ABBREV);
1026                 strbuf_reset(&sb);
1027                 strbuf_addstr(&sb, abbrev);
1028         } else if (!strcmp(sb.buf, "detached HEAD")) /* rebase */
1029                 goto got_nothing;
1030         else                    /* bisect */
1031                 ;
1032         return strbuf_detach(&sb, NULL);
1033
1034 got_nothing:
1035         strbuf_release(&sb);
1036         return NULL;
1037 }
1038
1039 struct grab_1st_switch_cbdata {
1040         struct strbuf buf;
1041         unsigned char nsha1[20];
1042 };
1043
1044 static int grab_1st_switch(unsigned char *osha1, unsigned char *nsha1,
1045                            const char *email, unsigned long timestamp, int tz,
1046                            const char *message, void *cb_data)
1047 {
1048         struct grab_1st_switch_cbdata *cb = cb_data;
1049         const char *target = NULL, *end;
1050
1051         if (prefixcmp(message, "checkout: moving from "))
1052                 return 0;
1053         message += strlen("checkout: moving from ");
1054         target = strstr(message, " to ");
1055         if (!target)
1056                 return 0;
1057         target += strlen(" to ");
1058         strbuf_reset(&cb->buf);
1059         hashcpy(cb->nsha1, nsha1);
1060         for (end = target; *end && *end != '\n'; end++)
1061                 ;
1062         strbuf_add(&cb->buf, target, end - target);
1063         return 1;
1064 }
1065
1066 static void wt_status_get_detached_from(struct wt_status_state *state)
1067 {
1068         struct grab_1st_switch_cbdata cb;
1069         struct commit *commit;
1070         unsigned char sha1[20];
1071         char *ref = NULL;
1072
1073         strbuf_init(&cb.buf, 0);
1074         if (for_each_reflog_ent_reverse("HEAD", grab_1st_switch, &cb) <= 0) {
1075                 strbuf_release(&cb.buf);
1076                 return;
1077         }
1078
1079         if (dwim_ref(cb.buf.buf, cb.buf.len, sha1, &ref) == 1 &&
1080             /* sha1 is a commit? match without further lookup */
1081             (!hashcmp(cb.nsha1, sha1) ||
1082              /* perhaps sha1 is a tag, try to dereference to a commit */
1083              ((commit = lookup_commit_reference_gently(sha1, 1)) != NULL &&
1084               !hashcmp(cb.nsha1, commit->object.sha1)))) {
1085                 int ofs;
1086                 if (!prefixcmp(ref, "refs/tags/"))
1087                         ofs = strlen("refs/tags/");
1088                 else if (!prefixcmp(ref, "refs/remotes/"))
1089                         ofs = strlen("refs/remotes/");
1090                 else
1091                         ofs = 0;
1092                 state->detached_from = xstrdup(ref + ofs);
1093         } else
1094                 state->detached_from =
1095                         xstrdup(find_unique_abbrev(cb.nsha1, DEFAULT_ABBREV));
1096         hashcpy(state->detached_sha1, cb.nsha1);
1097
1098         free(ref);
1099         strbuf_release(&cb.buf);
1100 }
1101
1102 void wt_status_get_state(struct wt_status_state *state,
1103                          int get_detached_from)
1104 {
1105         struct stat st;
1106         unsigned char sha1[20];
1107
1108         if (!stat(git_path("MERGE_HEAD"), &st)) {
1109                 state->merge_in_progress = 1;
1110         } else if (!stat(git_path("rebase-apply"), &st)) {
1111                 if (!stat(git_path("rebase-apply/applying"), &st)) {
1112                         state->am_in_progress = 1;
1113                         if (!stat(git_path("rebase-apply/patch"), &st) && !st.st_size)
1114                                 state->am_empty_patch = 1;
1115                 } else {
1116                         state->rebase_in_progress = 1;
1117                         state->branch = read_and_strip_branch("rebase-apply/head-name");
1118                         state->onto = read_and_strip_branch("rebase-apply/onto");
1119                 }
1120         } else if (!stat(git_path("rebase-merge"), &st)) {
1121                 if (!stat(git_path("rebase-merge/interactive"), &st))
1122                         state->rebase_interactive_in_progress = 1;
1123                 else
1124                         state->rebase_in_progress = 1;
1125                 state->branch = read_and_strip_branch("rebase-merge/head-name");
1126                 state->onto = read_and_strip_branch("rebase-merge/onto");
1127         } else if (!stat(git_path("CHERRY_PICK_HEAD"), &st)) {
1128                 state->cherry_pick_in_progress = 1;
1129         }
1130         if (!stat(git_path("BISECT_LOG"), &st)) {
1131                 state->bisect_in_progress = 1;
1132                 state->branch = read_and_strip_branch("BISECT_START");
1133         }
1134         if (!stat(git_path("REVERT_HEAD"), &st) &&
1135             !get_sha1("REVERT_HEAD", sha1)) {
1136                 state->revert_in_progress = 1;
1137                 hashcpy(state->revert_head_sha1, sha1);
1138         }
1139
1140         if (get_detached_from)
1141                 wt_status_get_detached_from(state);
1142 }
1143
1144 static void wt_status_print_state(struct wt_status *s,
1145                                   struct wt_status_state *state)
1146 {
1147         const char *state_color = color(WT_STATUS_HEADER, s);
1148         if (state->merge_in_progress)
1149                 show_merge_in_progress(s, state, state_color);
1150         else if (state->am_in_progress)
1151                 show_am_in_progress(s, state, state_color);
1152         else if (state->rebase_in_progress || state->rebase_interactive_in_progress)
1153                 show_rebase_in_progress(s, state, state_color);
1154         else if (state->cherry_pick_in_progress)
1155                 show_cherry_pick_in_progress(s, state, state_color);
1156         else if (state->revert_in_progress)
1157                 show_revert_in_progress(s, state, state_color);
1158         if (state->bisect_in_progress)
1159                 show_bisect_in_progress(s, state, state_color);
1160 }
1161
1162 void wt_status_print(struct wt_status *s)
1163 {
1164         const char *branch_color = color(WT_STATUS_ONBRANCH, s);
1165         const char *branch_status_color = color(WT_STATUS_HEADER, s);
1166         struct wt_status_state state;
1167
1168         memset(&state, 0, sizeof(state));
1169         wt_status_get_state(&state,
1170                             s->branch && !strcmp(s->branch, "HEAD"));
1171
1172         if (s->branch) {
1173                 const char *on_what = _("On branch ");
1174                 const char *branch_name = s->branch;
1175                 if (!prefixcmp(branch_name, "refs/heads/"))
1176                         branch_name += 11;
1177                 else if (!strcmp(branch_name, "HEAD")) {
1178                         branch_status_color = color(WT_STATUS_NOBRANCH, s);
1179                         if (state.rebase_in_progress || state.rebase_interactive_in_progress) {
1180                                 on_what = _("rebase in progress; onto ");
1181                                 branch_name = state.onto;
1182                         } else if (state.detached_from) {
1183                                 unsigned char sha1[20];
1184                                 branch_name = state.detached_from;
1185                                 if (!get_sha1("HEAD", sha1) &&
1186                                     !hashcmp(sha1, state.detached_sha1))
1187                                         on_what = _("HEAD detached at ");
1188                                 else
1189                                         on_what = _("HEAD detached from ");
1190                         } else {
1191                                 branch_name = "";
1192                                 on_what = _("Not currently on any branch.");
1193                         }
1194                 }
1195                 status_printf(s, color(WT_STATUS_HEADER, s), "");
1196                 status_printf_more(s, branch_status_color, "%s", on_what);
1197                 status_printf_more(s, branch_color, "%s\n", branch_name);
1198                 if (!s->is_initial)
1199                         wt_status_print_tracking(s);
1200         }
1201
1202         wt_status_print_state(s, &state);
1203         free(state.branch);
1204         free(state.onto);
1205         free(state.detached_from);
1206
1207         if (s->is_initial) {
1208                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
1209                 status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
1210                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
1211         }
1212
1213         wt_status_print_updated(s);
1214         wt_status_print_unmerged(s);
1215         wt_status_print_changed(s);
1216         if (s->submodule_summary &&
1217             (!s->ignore_submodule_arg ||
1218              strcmp(s->ignore_submodule_arg, "all"))) {
1219                 wt_status_print_submodule_summary(s, 0);  /* staged */
1220                 wt_status_print_submodule_summary(s, 1);  /* unstaged */
1221         }
1222         if (s->show_untracked_files) {
1223                 wt_status_print_other(s, &s->untracked, _("Untracked files"), "add");
1224                 if (s->show_ignored_files)
1225                         wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
1226                 if (advice_status_u_option && 2000 < s->untracked_in_ms) {
1227                         status_printf_ln(s, GIT_COLOR_NORMAL, "");
1228                         status_printf_ln(s, GIT_COLOR_NORMAL,
1229                                          _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
1230                                            "may speed it up, but you have to be careful not to forget to add\n"
1231                                            "new files yourself (see 'git help status')."),
1232                                          s->untracked_in_ms / 1000.0);
1233                 }
1234         } else if (s->commitable)
1235                 status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
1236                         advice_status_hints
1237                         ? _(" (use -u option to show untracked files)") : "");
1238
1239         if (s->verbose)
1240                 wt_status_print_verbose(s);
1241         if (!s->commitable) {
1242                 if (s->amend)
1243                         status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
1244                 else if (s->nowarn)
1245                         ; /* nothing */
1246                 else if (s->workdir_dirty) {
1247                         if (advice_status_hints)
1248                                 printf(_("no changes added to commit "
1249                                          "(use \"git add\" and/or \"git commit -a\")\n"));
1250                         else
1251                                 printf(_("no changes added to commit\n"));
1252                 } else if (s->untracked.nr) {
1253                         if (advice_status_hints)
1254                                 printf(_("nothing added to commit but untracked files "
1255                                          "present (use \"git add\" to track)\n"));
1256                         else
1257                                 printf(_("nothing added to commit but untracked files present\n"));
1258                 } else if (s->is_initial) {
1259                         if (advice_status_hints)
1260                                 printf(_("nothing to commit (create/copy files "
1261                                          "and use \"git add\" to track)\n"));
1262                         else
1263                                 printf(_("nothing to commit\n"));
1264                 } else if (!s->show_untracked_files) {
1265                         if (advice_status_hints)
1266                                 printf(_("nothing to commit (use -u to show untracked files)\n"));
1267                         else
1268                                 printf(_("nothing to commit\n"));
1269                 } else
1270                         printf(_("nothing to commit, working directory clean\n"));
1271         }
1272 }
1273
1274 static void wt_shortstatus_unmerged(struct string_list_item *it,
1275                            struct wt_status *s)
1276 {
1277         struct wt_status_change_data *d = it->util;
1278         const char *how = "??";
1279
1280         switch (d->stagemask) {
1281         case 1: how = "DD"; break; /* both deleted */
1282         case 2: how = "AU"; break; /* added by us */
1283         case 3: how = "UD"; break; /* deleted by them */
1284         case 4: how = "UA"; break; /* added by them */
1285         case 5: how = "DU"; break; /* deleted by us */
1286         case 6: how = "AA"; break; /* both added */
1287         case 7: how = "UU"; break; /* both modified */
1288         }
1289         color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
1290         if (s->null_termination) {
1291                 fprintf(stdout, " %s%c", it->string, 0);
1292         } else {
1293                 struct strbuf onebuf = STRBUF_INIT;
1294                 const char *one;
1295                 one = quote_path(it->string, s->prefix, &onebuf);
1296                 printf(" %s\n", one);
1297                 strbuf_release(&onebuf);
1298         }
1299 }
1300
1301 static void wt_shortstatus_status(struct string_list_item *it,
1302                          struct wt_status *s)
1303 {
1304         struct wt_status_change_data *d = it->util;
1305
1306         if (d->index_status)
1307                 color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
1308         else
1309                 putchar(' ');
1310         if (d->worktree_status)
1311                 color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
1312         else
1313                 putchar(' ');
1314         putchar(' ');
1315         if (s->null_termination) {
1316                 fprintf(stdout, "%s%c", it->string, 0);
1317                 if (d->head_path)
1318                         fprintf(stdout, "%s%c", d->head_path, 0);
1319         } else {
1320                 struct strbuf onebuf = STRBUF_INIT;
1321                 const char *one;
1322                 if (d->head_path) {
1323                         one = quote_path(d->head_path, s->prefix, &onebuf);
1324                         if (*one != '"' && strchr(one, ' ') != NULL) {
1325                                 putchar('"');
1326                                 strbuf_addch(&onebuf, '"');
1327                                 one = onebuf.buf;
1328                         }
1329                         printf("%s -> ", one);
1330                         strbuf_release(&onebuf);
1331                 }
1332                 one = quote_path(it->string, s->prefix, &onebuf);
1333                 if (*one != '"' && strchr(one, ' ') != NULL) {
1334                         putchar('"');
1335                         strbuf_addch(&onebuf, '"');
1336                         one = onebuf.buf;
1337                 }
1338                 printf("%s\n", one);
1339                 strbuf_release(&onebuf);
1340         }
1341 }
1342
1343 static void wt_shortstatus_other(struct string_list_item *it,
1344                                  struct wt_status *s, const char *sign)
1345 {
1346         if (s->null_termination) {
1347                 fprintf(stdout, "%s %s%c", sign, it->string, 0);
1348         } else {
1349                 struct strbuf onebuf = STRBUF_INIT;
1350                 const char *one;
1351                 one = quote_path(it->string, s->prefix, &onebuf);
1352                 color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
1353                 printf(" %s\n", one);
1354                 strbuf_release(&onebuf);
1355         }
1356 }
1357
1358 static void wt_shortstatus_print_tracking(struct wt_status *s)
1359 {
1360         struct branch *branch;
1361         const char *header_color = color(WT_STATUS_HEADER, s);
1362         const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
1363         const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
1364
1365         const char *base;
1366         const char *branch_name;
1367         int num_ours, num_theirs;
1368
1369         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
1370
1371         if (!s->branch)
1372                 return;
1373         branch_name = s->branch;
1374
1375         if (!prefixcmp(branch_name, "refs/heads/"))
1376                 branch_name += 11;
1377         else if (!strcmp(branch_name, "HEAD")) {
1378                 branch_name = _("HEAD (no branch)");
1379                 branch_color_local = color(WT_STATUS_NOBRANCH, s);
1380         }
1381
1382         branch = branch_get(s->branch + 11);
1383         if (s->is_initial)
1384                 color_fprintf(s->fp, header_color, _("Initial commit on "));
1385         if (!stat_tracking_info(branch, &num_ours, &num_theirs)) {
1386                 color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1387                 fputc(s->null_termination ? '\0' : '\n', s->fp);
1388                 return;
1389         }
1390
1391         base = branch->merge[0]->dst;
1392         base = shorten_unambiguous_ref(base, 0);
1393         color_fprintf(s->fp, branch_color_local, "%s", branch_name);
1394         color_fprintf(s->fp, header_color, "...");
1395         color_fprintf(s->fp, branch_color_remote, "%s", base);
1396
1397         color_fprintf(s->fp, header_color, " [");
1398         if (!num_ours) {
1399                 color_fprintf(s->fp, header_color, _("behind "));
1400                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1401         } else if (!num_theirs) {
1402                 color_fprintf(s->fp, header_color, _("ahead "));
1403                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1404         } else {
1405                 color_fprintf(s->fp, header_color, _("ahead "));
1406                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
1407                 color_fprintf(s->fp, header_color, _(", behind "));
1408                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
1409         }
1410
1411         color_fprintf(s->fp, header_color, "]");
1412         fputc(s->null_termination ? '\0' : '\n', s->fp);
1413 }
1414
1415 void wt_shortstatus_print(struct wt_status *s)
1416 {
1417         int i;
1418
1419         if (s->show_branch)
1420                 wt_shortstatus_print_tracking(s);
1421
1422         for (i = 0; i < s->change.nr; i++) {
1423                 struct wt_status_change_data *d;
1424                 struct string_list_item *it;
1425
1426                 it = &(s->change.items[i]);
1427                 d = it->util;
1428                 if (d->stagemask)
1429                         wt_shortstatus_unmerged(it, s);
1430                 else
1431                         wt_shortstatus_status(it, s);
1432         }
1433         for (i = 0; i < s->untracked.nr; i++) {
1434                 struct string_list_item *it;
1435
1436                 it = &(s->untracked.items[i]);
1437                 wt_shortstatus_other(it, s, "??");
1438         }
1439         for (i = 0; i < s->ignored.nr; i++) {
1440                 struct string_list_item *it;
1441
1442                 it = &(s->ignored.items[i]);
1443                 wt_shortstatus_other(it, s, "!!");
1444         }
1445 }
1446
1447 void wt_porcelain_print(struct wt_status *s)
1448 {
1449         s->use_color = 0;
1450         s->relative_paths = 0;
1451         s->prefix = NULL;
1452         wt_shortstatus_print(s);
1453 }