Merge branch 'jk/diff-not-so-quick'
[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
15 static char default_wt_status_colors[][COLOR_MAXLEN] = {
16         GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
17         GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
18         GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
19         GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
20         GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
21         GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
22         GIT_COLOR_GREEN,  /* WT_STATUS_LOCAL_BRANCH */
23         GIT_COLOR_RED,    /* WT_STATUS_REMOTE_BRANCH */
24         GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
25 };
26
27 static const char *color(int slot, struct wt_status *s)
28 {
29         const char *c = s->use_color > 0 ? s->color_palette[slot] : "";
30         if (slot == WT_STATUS_ONBRANCH && color_is_nil(c))
31                 c = s->color_palette[WT_STATUS_HEADER];
32         return c;
33 }
34
35 static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
36                 const char *fmt, va_list ap, const char *trail)
37 {
38         struct strbuf sb = STRBUF_INIT;
39         struct strbuf linebuf = STRBUF_INIT;
40         const char *line, *eol;
41
42         strbuf_vaddf(&sb, fmt, ap);
43         if (!sb.len) {
44                 strbuf_addch(&sb, '#');
45                 if (!trail)
46                         strbuf_addch(&sb, ' ');
47                 color_print_strbuf(s->fp, color, &sb);
48                 if (trail)
49                         fprintf(s->fp, "%s", trail);
50                 strbuf_release(&sb);
51                 return;
52         }
53         for (line = sb.buf; *line; line = eol + 1) {
54                 eol = strchr(line, '\n');
55
56                 strbuf_reset(&linebuf);
57                 if (at_bol) {
58                         strbuf_addch(&linebuf, '#');
59                         if (*line != '\n' && *line != '\t')
60                                 strbuf_addch(&linebuf, ' ');
61                 }
62                 if (eol)
63                         strbuf_add(&linebuf, line, eol - line);
64                 else
65                         strbuf_addstr(&linebuf, line);
66                 color_print_strbuf(s->fp, color, &linebuf);
67                 if (eol)
68                         fprintf(s->fp, "\n");
69                 else
70                         break;
71                 at_bol = 1;
72         }
73         if (trail)
74                 fprintf(s->fp, "%s", trail);
75         strbuf_release(&linebuf);
76         strbuf_release(&sb);
77 }
78
79 void status_printf_ln(struct wt_status *s, const char *color,
80                         const char *fmt, ...)
81 {
82         va_list ap;
83
84         va_start(ap, fmt);
85         status_vprintf(s, 1, color, fmt, ap, "\n");
86         va_end(ap);
87 }
88
89 void status_printf(struct wt_status *s, const char *color,
90                         const char *fmt, ...)
91 {
92         va_list ap;
93
94         va_start(ap, fmt);
95         status_vprintf(s, 1, color, fmt, ap, NULL);
96         va_end(ap);
97 }
98
99 void status_printf_more(struct wt_status *s, const char *color,
100                         const char *fmt, ...)
101 {
102         va_list ap;
103
104         va_start(ap, fmt);
105         status_vprintf(s, 0, color, fmt, ap, NULL);
106         va_end(ap);
107 }
108
109 void wt_status_prepare(struct wt_status *s)
110 {
111         unsigned char sha1[20];
112         const char *head;
113
114         memset(s, 0, sizeof(*s));
115         memcpy(s->color_palette, default_wt_status_colors,
116                sizeof(default_wt_status_colors));
117         s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
118         s->use_color = -1;
119         s->relative_paths = 1;
120         head = resolve_ref("HEAD", sha1, 0, NULL);
121         s->branch = head ? xstrdup(head) : NULL;
122         s->reference = "HEAD";
123         s->fp = stdout;
124         s->index_file = get_index_file();
125         s->change.strdup_strings = 1;
126         s->untracked.strdup_strings = 1;
127         s->ignored.strdup_strings = 1;
128 }
129
130 static void wt_status_print_unmerged_header(struct wt_status *s)
131 {
132         const char *c = color(WT_STATUS_HEADER, s);
133
134         status_printf_ln(s, c, _("Unmerged paths:"));
135         if (!advice_status_hints)
136                 return;
137         if (s->whence != FROM_COMMIT)
138                 ;
139         else if (!s->is_initial)
140                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
141         else
142                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
143         status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
144         status_printf_ln(s, c, "");
145 }
146
147 static void wt_status_print_cached_header(struct wt_status *s)
148 {
149         const char *c = color(WT_STATUS_HEADER, s);
150
151         status_printf_ln(s, c, _("Changes to be committed:"));
152         if (!advice_status_hints)
153                 return;
154         if (s->whence != FROM_COMMIT)
155                 ; /* NEEDSWORK: use "git reset --unresolve"??? */
156         else if (!s->is_initial)
157                 status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
158         else
159                 status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
160         status_printf_ln(s, c, "");
161 }
162
163 static void wt_status_print_dirty_header(struct wt_status *s,
164                                          int has_deleted,
165                                          int has_dirty_submodules)
166 {
167         const char *c = color(WT_STATUS_HEADER, s);
168
169         status_printf_ln(s, c, _("Changes not staged for commit:"));
170         if (!advice_status_hints)
171                 return;
172         if (!has_deleted)
173                 status_printf_ln(s, c, _("  (use \"git add <file>...\" to update what will be committed)"));
174         else
175                 status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" to update what will be committed)"));
176         status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
177         if (has_dirty_submodules)
178                 status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
179         status_printf_ln(s, c, "");
180 }
181
182 static void wt_status_print_other_header(struct wt_status *s,
183                                          const char *what,
184                                          const char *how)
185 {
186         const char *c = color(WT_STATUS_HEADER, s);
187         status_printf_ln(s, c, _("%s files:"), what);
188         if (!advice_status_hints)
189                 return;
190         status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
191         status_printf_ln(s, c, "");
192 }
193
194 static void wt_status_print_trailer(struct wt_status *s)
195 {
196         status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
197 }
198
199 #define quote_path quote_path_relative
200
201 static void wt_status_print_unmerged_data(struct wt_status *s,
202                                           struct string_list_item *it)
203 {
204         const char *c = color(WT_STATUS_UNMERGED, s);
205         struct wt_status_change_data *d = it->util;
206         struct strbuf onebuf = STRBUF_INIT;
207         const char *one, *how = _("bug");
208
209         one = quote_path(it->string, -1, &onebuf, s->prefix);
210         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
211         switch (d->stagemask) {
212         case 1: how = _("both deleted:"); break;
213         case 2: how = _("added by us:"); break;
214         case 3: how = _("deleted by them:"); break;
215         case 4: how = _("added by them:"); break;
216         case 5: how = _("deleted by us:"); break;
217         case 6: how = _("both added:"); break;
218         case 7: how = _("both modified:"); break;
219         }
220         status_printf_more(s, c, "%-20s%s\n", how, one);
221         strbuf_release(&onebuf);
222 }
223
224 static void wt_status_print_change_data(struct wt_status *s,
225                                         int change_type,
226                                         struct string_list_item *it)
227 {
228         struct wt_status_change_data *d = it->util;
229         const char *c = color(change_type, s);
230         int status = status;
231         char *one_name;
232         char *two_name;
233         const char *one, *two;
234         struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
235         struct strbuf extra = STRBUF_INIT;
236
237         one_name = two_name = it->string;
238         switch (change_type) {
239         case WT_STATUS_UPDATED:
240                 status = d->index_status;
241                 if (d->head_path)
242                         one_name = d->head_path;
243                 break;
244         case WT_STATUS_CHANGED:
245                 if (d->new_submodule_commits || d->dirty_submodule) {
246                         strbuf_addstr(&extra, " (");
247                         if (d->new_submodule_commits)
248                                 strbuf_addf(&extra, _("new commits, "));
249                         if (d->dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
250                                 strbuf_addf(&extra, _("modified content, "));
251                         if (d->dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
252                                 strbuf_addf(&extra, _("untracked content, "));
253                         strbuf_setlen(&extra, extra.len - 2);
254                         strbuf_addch(&extra, ')');
255                 }
256                 status = d->worktree_status;
257                 break;
258         }
259
260         one = quote_path(one_name, -1, &onebuf, s->prefix);
261         two = quote_path(two_name, -1, &twobuf, s->prefix);
262
263         status_printf(s, color(WT_STATUS_HEADER, s), "\t");
264         switch (status) {
265         case DIFF_STATUS_ADDED:
266                 status_printf_more(s, c, _("new file:   %s"), one);
267                 break;
268         case DIFF_STATUS_COPIED:
269                 status_printf_more(s, c, _("copied:     %s -> %s"), one, two);
270                 break;
271         case DIFF_STATUS_DELETED:
272                 status_printf_more(s, c, _("deleted:    %s"), one);
273                 break;
274         case DIFF_STATUS_MODIFIED:
275                 status_printf_more(s, c, _("modified:   %s"), one);
276                 break;
277         case DIFF_STATUS_RENAMED:
278                 status_printf_more(s, c, _("renamed:    %s -> %s"), one, two);
279                 break;
280         case DIFF_STATUS_TYPE_CHANGED:
281                 status_printf_more(s, c, _("typechange: %s"), one);
282                 break;
283         case DIFF_STATUS_UNKNOWN:
284                 status_printf_more(s, c, _("unknown:    %s"), one);
285                 break;
286         case DIFF_STATUS_UNMERGED:
287                 status_printf_more(s, c, _("unmerged:   %s"), one);
288                 break;
289         default:
290                 die(_("bug: unhandled diff status %c"), status);
291         }
292         if (extra.len) {
293                 status_printf_more(s, color(WT_STATUS_HEADER, s), "%s", extra.buf);
294                 strbuf_release(&extra);
295         }
296         status_printf_more(s, GIT_COLOR_NORMAL, "\n");
297         strbuf_release(&onebuf);
298         strbuf_release(&twobuf);
299 }
300
301 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
302                                          struct diff_options *options,
303                                          void *data)
304 {
305         struct wt_status *s = data;
306         int i;
307
308         if (!q->nr)
309                 return;
310         s->workdir_dirty = 1;
311         for (i = 0; i < q->nr; i++) {
312                 struct diff_filepair *p;
313                 struct string_list_item *it;
314                 struct wt_status_change_data *d;
315
316                 p = q->queue[i];
317                 it = string_list_insert(&s->change, p->one->path);
318                 d = it->util;
319                 if (!d) {
320                         d = xcalloc(1, sizeof(*d));
321                         it->util = d;
322                 }
323                 if (!d->worktree_status)
324                         d->worktree_status = p->status;
325                 d->dirty_submodule = p->two->dirty_submodule;
326                 if (S_ISGITLINK(p->two->mode))
327                         d->new_submodule_commits = !!hashcmp(p->one->sha1, p->two->sha1);
328         }
329 }
330
331 static int unmerged_mask(const char *path)
332 {
333         int pos, mask;
334         struct cache_entry *ce;
335
336         pos = cache_name_pos(path, strlen(path));
337         if (0 <= pos)
338                 return 0;
339
340         mask = 0;
341         pos = -pos-1;
342         while (pos < active_nr) {
343                 ce = active_cache[pos++];
344                 if (strcmp(ce->name, path) || !ce_stage(ce))
345                         break;
346                 mask |= (1 << (ce_stage(ce) - 1));
347         }
348         return mask;
349 }
350
351 static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
352                                          struct diff_options *options,
353                                          void *data)
354 {
355         struct wt_status *s = data;
356         int i;
357
358         for (i = 0; i < q->nr; i++) {
359                 struct diff_filepair *p;
360                 struct string_list_item *it;
361                 struct wt_status_change_data *d;
362
363                 p = q->queue[i];
364                 it = string_list_insert(&s->change, p->two->path);
365                 d = it->util;
366                 if (!d) {
367                         d = xcalloc(1, sizeof(*d));
368                         it->util = d;
369                 }
370                 if (!d->index_status)
371                         d->index_status = p->status;
372                 switch (p->status) {
373                 case DIFF_STATUS_COPIED:
374                 case DIFF_STATUS_RENAMED:
375                         d->head_path = xstrdup(p->one->path);
376                         break;
377                 case DIFF_STATUS_UNMERGED:
378                         d->stagemask = unmerged_mask(p->two->path);
379                         break;
380                 }
381         }
382 }
383
384 static void wt_status_collect_changes_worktree(struct wt_status *s)
385 {
386         struct rev_info rev;
387
388         init_revisions(&rev, NULL);
389         setup_revisions(0, NULL, &rev, NULL);
390         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
391         DIFF_OPT_SET(&rev.diffopt, DIRTY_SUBMODULES);
392         if (!s->show_untracked_files)
393                 DIFF_OPT_SET(&rev.diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
394         if (s->ignore_submodule_arg) {
395                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
396                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
397     }
398         rev.diffopt.format_callback = wt_status_collect_changed_cb;
399         rev.diffopt.format_callback_data = s;
400         init_pathspec(&rev.prune_data, s->pathspec);
401         run_diff_files(&rev, 0);
402 }
403
404 static void wt_status_collect_changes_index(struct wt_status *s)
405 {
406         struct rev_info rev;
407         struct setup_revision_opt opt;
408
409         init_revisions(&rev, NULL);
410         memset(&opt, 0, sizeof(opt));
411         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
412         setup_revisions(0, NULL, &rev, &opt);
413
414         if (s->ignore_submodule_arg) {
415                 DIFF_OPT_SET(&rev.diffopt, OVERRIDE_SUBMODULE_CONFIG);
416                 handle_ignore_submodules_arg(&rev.diffopt, s->ignore_submodule_arg);
417         }
418
419         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
420         rev.diffopt.format_callback = wt_status_collect_updated_cb;
421         rev.diffopt.format_callback_data = s;
422         rev.diffopt.detect_rename = 1;
423         rev.diffopt.rename_limit = 200;
424         rev.diffopt.break_opt = 0;
425         init_pathspec(&rev.prune_data, s->pathspec);
426         run_diff_index(&rev, 1);
427 }
428
429 static void wt_status_collect_changes_initial(struct wt_status *s)
430 {
431         struct pathspec pathspec;
432         int i;
433
434         init_pathspec(&pathspec, s->pathspec);
435         for (i = 0; i < active_nr; i++) {
436                 struct string_list_item *it;
437                 struct wt_status_change_data *d;
438                 struct cache_entry *ce = active_cache[i];
439
440                 if (!ce_path_match(ce, &pathspec))
441                         continue;
442                 it = string_list_insert(&s->change, ce->name);
443                 d = it->util;
444                 if (!d) {
445                         d = xcalloc(1, sizeof(*d));
446                         it->util = d;
447                 }
448                 if (ce_stage(ce)) {
449                         d->index_status = DIFF_STATUS_UNMERGED;
450                         d->stagemask |= (1 << (ce_stage(ce) - 1));
451                 }
452                 else
453                         d->index_status = DIFF_STATUS_ADDED;
454         }
455         free_pathspec(&pathspec);
456 }
457
458 static void wt_status_collect_untracked(struct wt_status *s)
459 {
460         int i;
461         struct dir_struct dir;
462
463         if (!s->show_untracked_files)
464                 return;
465         memset(&dir, 0, sizeof(dir));
466         if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
467                 dir.flags |=
468                         DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
469         setup_standard_excludes(&dir);
470
471         fill_directory(&dir, s->pathspec);
472         for (i = 0; i < dir.nr; i++) {
473                 struct dir_entry *ent = dir.entries[i];
474                 if (cache_name_is_other(ent->name, ent->len) &&
475                     match_pathspec(s->pathspec, ent->name, ent->len, 0, NULL))
476                         string_list_insert(&s->untracked, ent->name);
477                 free(ent);
478         }
479
480         if (s->show_ignored_files) {
481                 dir.nr = 0;
482                 dir.flags = DIR_SHOW_IGNORED | DIR_SHOW_OTHER_DIRECTORIES;
483                 fill_directory(&dir, s->pathspec);
484                 for (i = 0; i < dir.nr; i++) {
485                         struct dir_entry *ent = dir.entries[i];
486                         if (cache_name_is_other(ent->name, ent->len) &&
487                             match_pathspec(s->pathspec, ent->name, ent->len, 0, NULL))
488                                 string_list_insert(&s->ignored, ent->name);
489                         free(ent);
490                 }
491         }
492
493         free(dir.entries);
494 }
495
496 void wt_status_collect(struct wt_status *s)
497 {
498         wt_status_collect_changes_worktree(s);
499
500         if (s->is_initial)
501                 wt_status_collect_changes_initial(s);
502         else
503                 wt_status_collect_changes_index(s);
504         wt_status_collect_untracked(s);
505 }
506
507 static void wt_status_print_unmerged(struct wt_status *s)
508 {
509         int shown_header = 0;
510         int i;
511
512         for (i = 0; i < s->change.nr; i++) {
513                 struct wt_status_change_data *d;
514                 struct string_list_item *it;
515                 it = &(s->change.items[i]);
516                 d = it->util;
517                 if (!d->stagemask)
518                         continue;
519                 if (!shown_header) {
520                         wt_status_print_unmerged_header(s);
521                         shown_header = 1;
522                 }
523                 wt_status_print_unmerged_data(s, it);
524         }
525         if (shown_header)
526                 wt_status_print_trailer(s);
527
528 }
529
530 static void wt_status_print_updated(struct wt_status *s)
531 {
532         int shown_header = 0;
533         int i;
534
535         for (i = 0; i < s->change.nr; i++) {
536                 struct wt_status_change_data *d;
537                 struct string_list_item *it;
538                 it = &(s->change.items[i]);
539                 d = it->util;
540                 if (!d->index_status ||
541                     d->index_status == DIFF_STATUS_UNMERGED)
542                         continue;
543                 if (!shown_header) {
544                         wt_status_print_cached_header(s);
545                         s->commitable = 1;
546                         shown_header = 1;
547                 }
548                 wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
549         }
550         if (shown_header)
551                 wt_status_print_trailer(s);
552 }
553
554 /*
555  * -1 : has delete
556  *  0 : no change
557  *  1 : some change but no delete
558  */
559 static int wt_status_check_worktree_changes(struct wt_status *s,
560                                              int *dirty_submodules)
561 {
562         int i;
563         int changes = 0;
564
565         *dirty_submodules = 0;
566
567         for (i = 0; i < s->change.nr; i++) {
568                 struct wt_status_change_data *d;
569                 d = s->change.items[i].util;
570                 if (!d->worktree_status ||
571                     d->worktree_status == DIFF_STATUS_UNMERGED)
572                         continue;
573                 if (!changes)
574                         changes = 1;
575                 if (d->dirty_submodule)
576                         *dirty_submodules = 1;
577                 if (d->worktree_status == DIFF_STATUS_DELETED)
578                         changes = -1;
579         }
580         return changes;
581 }
582
583 static void wt_status_print_changed(struct wt_status *s)
584 {
585         int i, dirty_submodules;
586         int worktree_changes = wt_status_check_worktree_changes(s, &dirty_submodules);
587
588         if (!worktree_changes)
589                 return;
590
591         wt_status_print_dirty_header(s, worktree_changes < 0, dirty_submodules);
592
593         for (i = 0; i < s->change.nr; i++) {
594                 struct wt_status_change_data *d;
595                 struct string_list_item *it;
596                 it = &(s->change.items[i]);
597                 d = it->util;
598                 if (!d->worktree_status ||
599                     d->worktree_status == DIFF_STATUS_UNMERGED)
600                         continue;
601                 wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
602         }
603         wt_status_print_trailer(s);
604 }
605
606 static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
607 {
608         struct child_process sm_summary;
609         char summary_limit[64];
610         char index[PATH_MAX];
611         const char *env[] = { NULL, NULL };
612         const char *argv[8];
613
614         env[0] =        index;
615         argv[0] =       "submodule";
616         argv[1] =       "summary";
617         argv[2] =       uncommitted ? "--files" : "--cached";
618         argv[3] =       "--for-status";
619         argv[4] =       "--summary-limit";
620         argv[5] =       summary_limit;
621         argv[6] =       uncommitted ? NULL : (s->amend ? "HEAD^" : "HEAD");
622         argv[7] =       NULL;
623
624         sprintf(summary_limit, "%d", s->submodule_summary);
625         snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", s->index_file);
626
627         memset(&sm_summary, 0, sizeof(sm_summary));
628         sm_summary.argv = argv;
629         sm_summary.env = env;
630         sm_summary.git_cmd = 1;
631         sm_summary.no_stdin = 1;
632         fflush(s->fp);
633         sm_summary.out = dup(fileno(s->fp));    /* run_command closes it */
634         run_command(&sm_summary);
635 }
636
637 static void wt_status_print_other(struct wt_status *s,
638                                   struct string_list *l,
639                                   const char *what,
640                                   const char *how)
641 {
642         int i;
643         struct strbuf buf = STRBUF_INIT;
644
645         if (!s->untracked.nr)
646                 return;
647
648         wt_status_print_other_header(s, what, how);
649
650         for (i = 0; i < l->nr; i++) {
651                 struct string_list_item *it;
652                 it = &(l->items[i]);
653                 status_printf(s, color(WT_STATUS_HEADER, s), "\t");
654                 status_printf_more(s, color(WT_STATUS_UNTRACKED, s),
655                         "%s\n", quote_path(it->string, strlen(it->string),
656                                             &buf, s->prefix));
657         }
658         strbuf_release(&buf);
659 }
660
661 static void wt_status_print_verbose(struct wt_status *s)
662 {
663         struct rev_info rev;
664         struct setup_revision_opt opt;
665
666         init_revisions(&rev, NULL);
667         DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
668
669         memset(&opt, 0, sizeof(opt));
670         opt.def = s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference;
671         setup_revisions(0, NULL, &rev, &opt);
672
673         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
674         rev.diffopt.detect_rename = 1;
675         rev.diffopt.file = s->fp;
676         rev.diffopt.close_file = 0;
677         /*
678          * If we're not going to stdout, then we definitely don't
679          * want color, since we are going to the commit message
680          * file (and even the "auto" setting won't work, since it
681          * will have checked isatty on stdout).
682          */
683         if (s->fp != stdout)
684                 DIFF_OPT_CLR(&rev.diffopt, COLOR_DIFF);
685         run_diff_index(&rev, 1);
686 }
687
688 static void wt_status_print_tracking(struct wt_status *s)
689 {
690         struct strbuf sb = STRBUF_INIT;
691         const char *cp, *ep;
692         struct branch *branch;
693
694         assert(s->branch && !s->is_initial);
695         if (prefixcmp(s->branch, "refs/heads/"))
696                 return;
697         branch = branch_get(s->branch + 11);
698         if (!format_tracking_info(branch, &sb))
699                 return;
700
701         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
702                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
703                                  "# %.*s", (int)(ep - cp), cp);
704         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
705 }
706
707 void wt_status_print(struct wt_status *s)
708 {
709         const char *branch_color = color(WT_STATUS_ONBRANCH, s);
710         const char *branch_status_color = color(WT_STATUS_HEADER, s);
711
712         if (s->branch) {
713                 const char *on_what = _("On branch ");
714                 const char *branch_name = s->branch;
715                 if (!prefixcmp(branch_name, "refs/heads/"))
716                         branch_name += 11;
717                 else if (!strcmp(branch_name, "HEAD")) {
718                         branch_name = "";
719                         branch_status_color = color(WT_STATUS_NOBRANCH, s);
720                         on_what = _("Not currently on any branch.");
721                 }
722                 status_printf(s, color(WT_STATUS_HEADER, s), "");
723                 status_printf_more(s, branch_status_color, "%s", on_what);
724                 status_printf_more(s, branch_color, "%s\n", branch_name);
725                 if (!s->is_initial)
726                         wt_status_print_tracking(s);
727         }
728
729         if (s->is_initial) {
730                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
731                 status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
732                 status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
733         }
734
735         wt_status_print_updated(s);
736         wt_status_print_unmerged(s);
737         wt_status_print_changed(s);
738         if (s->submodule_summary &&
739             (!s->ignore_submodule_arg ||
740              strcmp(s->ignore_submodule_arg, "all"))) {
741                 wt_status_print_submodule_summary(s, 0);  /* staged */
742                 wt_status_print_submodule_summary(s, 1);  /* unstaged */
743         }
744         if (s->show_untracked_files) {
745                 wt_status_print_other(s, &s->untracked, _("Untracked"), "add");
746                 if (s->show_ignored_files)
747                         wt_status_print_other(s, &s->ignored, _("Ignored"), "add -f");
748         } else if (s->commitable)
749                 status_printf_ln(s, GIT_COLOR_NORMAL, _("Untracked files not listed%s"),
750                         advice_status_hints
751                         ? _(" (use -u option to show untracked files)") : "");
752
753         if (s->verbose)
754                 wt_status_print_verbose(s);
755         if (!s->commitable) {
756                 if (s->amend)
757                         status_printf_ln(s, GIT_COLOR_NORMAL, _("No changes"));
758                 else if (s->nowarn)
759                         ; /* nothing */
760                 else if (s->workdir_dirty)
761                         printf(_("no changes added to commit%s\n"),
762                                 advice_status_hints
763                                 ? _(" (use \"git add\" and/or \"git commit -a\")") : "");
764                 else if (s->untracked.nr)
765                         printf(_("nothing added to commit but untracked files present%s\n"),
766                                 advice_status_hints
767                                 ? _(" (use \"git add\" to track)") : "");
768                 else if (s->is_initial)
769                         printf(_("nothing to commit%s\n"), advice_status_hints
770                                 ? _(" (create/copy files and use \"git add\" to track)") : "");
771                 else if (!s->show_untracked_files)
772                         printf(_("nothing to commit%s\n"), advice_status_hints
773                                 ? _(" (use -u to show untracked files)") : "");
774                 else
775                         printf(_("nothing to commit%s\n"), advice_status_hints
776                                 ? _(" (working directory clean)") : "");
777         }
778 }
779
780 static void wt_shortstatus_unmerged(int null_termination, struct string_list_item *it,
781                            struct wt_status *s)
782 {
783         struct wt_status_change_data *d = it->util;
784         const char *how = "??";
785
786         switch (d->stagemask) {
787         case 1: how = "DD"; break; /* both deleted */
788         case 2: how = "AU"; break; /* added by us */
789         case 3: how = "UD"; break; /* deleted by them */
790         case 4: how = "UA"; break; /* added by them */
791         case 5: how = "DU"; break; /* deleted by us */
792         case 6: how = "AA"; break; /* both added */
793         case 7: how = "UU"; break; /* both modified */
794         }
795         color_fprintf(s->fp, color(WT_STATUS_UNMERGED, s), "%s", how);
796         if (null_termination) {
797                 fprintf(stdout, " %s%c", it->string, 0);
798         } else {
799                 struct strbuf onebuf = STRBUF_INIT;
800                 const char *one;
801                 one = quote_path(it->string, -1, &onebuf, s->prefix);
802                 printf(" %s\n", one);
803                 strbuf_release(&onebuf);
804         }
805 }
806
807 static void wt_shortstatus_status(int null_termination, struct string_list_item *it,
808                          struct wt_status *s)
809 {
810         struct wt_status_change_data *d = it->util;
811
812         if (d->index_status)
813                 color_fprintf(s->fp, color(WT_STATUS_UPDATED, s), "%c", d->index_status);
814         else
815                 putchar(' ');
816         if (d->worktree_status)
817                 color_fprintf(s->fp, color(WT_STATUS_CHANGED, s), "%c", d->worktree_status);
818         else
819                 putchar(' ');
820         putchar(' ');
821         if (null_termination) {
822                 fprintf(stdout, "%s%c", it->string, 0);
823                 if (d->head_path)
824                         fprintf(stdout, "%s%c", d->head_path, 0);
825         } else {
826                 struct strbuf onebuf = STRBUF_INIT;
827                 const char *one;
828                 if (d->head_path) {
829                         one = quote_path(d->head_path, -1, &onebuf, s->prefix);
830                         if (*one != '"' && strchr(one, ' ') != NULL) {
831                                 putchar('"');
832                                 strbuf_addch(&onebuf, '"');
833                                 one = onebuf.buf;
834                         }
835                         printf("%s -> ", one);
836                         strbuf_release(&onebuf);
837                 }
838                 one = quote_path(it->string, -1, &onebuf, s->prefix);
839                 if (*one != '"' && strchr(one, ' ') != NULL) {
840                         putchar('"');
841                         strbuf_addch(&onebuf, '"');
842                         one = onebuf.buf;
843                 }
844                 printf("%s\n", one);
845                 strbuf_release(&onebuf);
846         }
847 }
848
849 static void wt_shortstatus_other(int null_termination, struct string_list_item *it,
850                                  struct wt_status *s, const char *sign)
851 {
852         if (null_termination) {
853                 fprintf(stdout, "%s %s%c", sign, it->string, 0);
854         } else {
855                 struct strbuf onebuf = STRBUF_INIT;
856                 const char *one;
857                 one = quote_path(it->string, -1, &onebuf, s->prefix);
858                 color_fprintf(s->fp, color(WT_STATUS_UNTRACKED, s), "%s", sign);
859                 printf(" %s\n", one);
860                 strbuf_release(&onebuf);
861         }
862 }
863
864 static void wt_shortstatus_print_tracking(struct wt_status *s)
865 {
866         struct branch *branch;
867         const char *header_color = color(WT_STATUS_HEADER, s);
868         const char *branch_color_local = color(WT_STATUS_LOCAL_BRANCH, s);
869         const char *branch_color_remote = color(WT_STATUS_REMOTE_BRANCH, s);
870
871         const char *base;
872         const char *branch_name;
873         int num_ours, num_theirs;
874
875         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "## ");
876
877         if (!s->branch)
878                 return;
879         branch_name = s->branch;
880
881         if (!prefixcmp(branch_name, "refs/heads/"))
882                 branch_name += 11;
883         else if (!strcmp(branch_name, "HEAD")) {
884                 branch_name = _("HEAD (no branch)");
885                 branch_color_local = color(WT_STATUS_NOBRANCH, s);
886         }
887
888         branch = branch_get(s->branch + 11);
889         if (s->is_initial)
890                 color_fprintf(s->fp, header_color, _("Initial commit on "));
891         if (!stat_tracking_info(branch, &num_ours, &num_theirs)) {
892                 color_fprintf_ln(s->fp, branch_color_local,
893                         "%s", branch_name);
894                 return;
895         }
896
897         base = branch->merge[0]->dst;
898         base = shorten_unambiguous_ref(base, 0);
899         color_fprintf(s->fp, branch_color_local, "%s", branch_name);
900         color_fprintf(s->fp, header_color, "...");
901         color_fprintf(s->fp, branch_color_remote, "%s", base);
902
903         color_fprintf(s->fp, header_color, " [");
904         if (!num_ours) {
905                 color_fprintf(s->fp, header_color, _("behind "));
906                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
907         } else if (!num_theirs) {
908                 color_fprintf(s->fp, header_color, _("ahead "));
909                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
910         } else {
911                 color_fprintf(s->fp, header_color, _("ahead "));
912                 color_fprintf(s->fp, branch_color_local, "%d", num_ours);
913                 color_fprintf(s->fp, header_color, _(", behind "));
914                 color_fprintf(s->fp, branch_color_remote, "%d", num_theirs);
915         }
916
917         color_fprintf_ln(s->fp, header_color, "]");
918 }
919
920 void wt_shortstatus_print(struct wt_status *s, int null_termination, int show_branch)
921 {
922         int i;
923
924         if (show_branch)
925                 wt_shortstatus_print_tracking(s);
926
927         for (i = 0; i < s->change.nr; i++) {
928                 struct wt_status_change_data *d;
929                 struct string_list_item *it;
930
931                 it = &(s->change.items[i]);
932                 d = it->util;
933                 if (d->stagemask)
934                         wt_shortstatus_unmerged(null_termination, it, s);
935                 else
936                         wt_shortstatus_status(null_termination, it, s);
937         }
938         for (i = 0; i < s->untracked.nr; i++) {
939                 struct string_list_item *it;
940
941                 it = &(s->untracked.items[i]);
942                 wt_shortstatus_other(null_termination, it, s, "??");
943         }
944         for (i = 0; i < s->ignored.nr; i++) {
945                 struct string_list_item *it;
946
947                 it = &(s->ignored.items[i]);
948                 wt_shortstatus_other(null_termination, it, s, "!!");
949         }
950 }
951
952 void wt_porcelain_print(struct wt_status *s, int null_termination)
953 {
954         s->use_color = 0;
955         s->relative_paths = 0;
956         s->prefix = NULL;
957         wt_shortstatus_print(s, null_termination, 0);
958 }