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