add -i, send-email, svn, p4, etc: use "git var GIT_EDITOR"
[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
13 static char default_wt_status_colors[][COLOR_MAXLEN] = {
14         GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
15         GIT_COLOR_GREEN,  /* WT_STATUS_UPDATED */
16         GIT_COLOR_RED,    /* WT_STATUS_CHANGED */
17         GIT_COLOR_RED,    /* WT_STATUS_UNTRACKED */
18         GIT_COLOR_RED,    /* WT_STATUS_NOBRANCH */
19         GIT_COLOR_RED,    /* WT_STATUS_UNMERGED */
20 };
21
22 static const char *color(int slot, struct wt_status *s)
23 {
24         return s->use_color > 0 ? s->color_palette[slot] : "";
25 }
26
27 void wt_status_prepare(struct wt_status *s)
28 {
29         unsigned char sha1[20];
30         const char *head;
31
32         memset(s, 0, sizeof(*s));
33         memcpy(s->color_palette, default_wt_status_colors,
34                sizeof(default_wt_status_colors));
35         s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
36         s->use_color = -1;
37         s->relative_paths = 1;
38         head = resolve_ref("HEAD", sha1, 0, NULL);
39         s->branch = head ? xstrdup(head) : NULL;
40         s->reference = "HEAD";
41         s->fp = stdout;
42         s->index_file = get_index_file();
43         s->change.strdup_strings = 1;
44         s->untracked.strdup_strings = 1;
45 }
46
47 static void wt_status_print_unmerged_header(struct wt_status *s)
48 {
49         const char *c = color(WT_STATUS_HEADER, s);
50         color_fprintf_ln(s->fp, c, "# Unmerged paths:");
51         if (!advice_status_hints)
52                 return;
53         if (!s->is_initial)
54                 color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
55         else
56                 color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
57         color_fprintf_ln(s->fp, c, "#   (use \"git add <file>...\" to mark resolution)");
58         color_fprintf_ln(s->fp, c, "#");
59 }
60
61 static void wt_status_print_cached_header(struct wt_status *s)
62 {
63         const char *c = color(WT_STATUS_HEADER, s);
64         color_fprintf_ln(s->fp, c, "# Changes to be committed:");
65         if (!advice_status_hints)
66                 return;
67         if (!s->is_initial) {
68                 color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
69         } else {
70                 color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
71         }
72         color_fprintf_ln(s->fp, c, "#");
73 }
74
75 static void wt_status_print_dirty_header(struct wt_status *s,
76                                          int has_deleted)
77 {
78         const char *c = color(WT_STATUS_HEADER, s);
79         color_fprintf_ln(s->fp, c, "# Changed but not updated:");
80         if (!advice_status_hints)
81                 return;
82         if (!has_deleted)
83                 color_fprintf_ln(s->fp, c, "#   (use \"git add <file>...\" to update what will be committed)");
84         else
85                 color_fprintf_ln(s->fp, c, "#   (use \"git add/rm <file>...\" to update what will be committed)");
86         color_fprintf_ln(s->fp, c, "#   (use \"git checkout -- <file>...\" to discard changes in working directory)");
87         color_fprintf_ln(s->fp, c, "#");
88 }
89
90 static void wt_status_print_untracked_header(struct wt_status *s)
91 {
92         const char *c = color(WT_STATUS_HEADER, s);
93         color_fprintf_ln(s->fp, c, "# Untracked files:");
94         if (!advice_status_hints)
95                 return;
96         color_fprintf_ln(s->fp, c, "#   (use \"git add <file>...\" to include in what will be committed)");
97         color_fprintf_ln(s->fp, c, "#");
98 }
99
100 static void wt_status_print_trailer(struct wt_status *s)
101 {
102         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
103 }
104
105 #define quote_path quote_path_relative
106
107 static void wt_status_print_unmerged_data(struct wt_status *s,
108                                           struct string_list_item *it)
109 {
110         const char *c = color(WT_STATUS_UNMERGED, s);
111         struct wt_status_change_data *d = it->util;
112         struct strbuf onebuf = STRBUF_INIT;
113         const char *one, *how = "bug";
114
115         one = quote_path(it->string, -1, &onebuf, s->prefix);
116         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "#\t");
117         switch (d->stagemask) {
118         case 1: how = "both deleted:"; break;
119         case 2: how = "added by us:"; break;
120         case 3: how = "deleted by them:"; break;
121         case 4: how = "added by them:"; break;
122         case 5: how = "deleted by us:"; break;
123         case 6: how = "both added:"; break;
124         case 7: how = "both modified:"; break;
125         }
126         color_fprintf(s->fp, c, "%-20s%s\n", how, one);
127         strbuf_release(&onebuf);
128 }
129
130 static void wt_status_print_change_data(struct wt_status *s,
131                                         int change_type,
132                                         struct string_list_item *it)
133 {
134         struct wt_status_change_data *d = it->util;
135         const char *c = color(change_type, s);
136         int status = status;
137         char *one_name;
138         char *two_name;
139         const char *one, *two;
140         struct strbuf onebuf = STRBUF_INIT, twobuf = STRBUF_INIT;
141
142         one_name = two_name = it->string;
143         switch (change_type) {
144         case WT_STATUS_UPDATED:
145                 status = d->index_status;
146                 if (d->head_path)
147                         one_name = d->head_path;
148                 break;
149         case WT_STATUS_CHANGED:
150                 status = d->worktree_status;
151                 break;
152         }
153
154         one = quote_path(one_name, -1, &onebuf, s->prefix);
155         two = quote_path(two_name, -1, &twobuf, s->prefix);
156
157         color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "#\t");
158         switch (status) {
159         case DIFF_STATUS_ADDED:
160                 color_fprintf(s->fp, c, "new file:   %s", one);
161                 break;
162         case DIFF_STATUS_COPIED:
163                 color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
164                 break;
165         case DIFF_STATUS_DELETED:
166                 color_fprintf(s->fp, c, "deleted:    %s", one);
167                 break;
168         case DIFF_STATUS_MODIFIED:
169                 color_fprintf(s->fp, c, "modified:   %s", one);
170                 break;
171         case DIFF_STATUS_RENAMED:
172                 color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
173                 break;
174         case DIFF_STATUS_TYPE_CHANGED:
175                 color_fprintf(s->fp, c, "typechange: %s", one);
176                 break;
177         case DIFF_STATUS_UNKNOWN:
178                 color_fprintf(s->fp, c, "unknown:    %s", one);
179                 break;
180         case DIFF_STATUS_UNMERGED:
181                 color_fprintf(s->fp, c, "unmerged:   %s", one);
182                 break;
183         default:
184                 die("bug: unhandled diff status %c", status);
185         }
186         fprintf(s->fp, "\n");
187         strbuf_release(&onebuf);
188         strbuf_release(&twobuf);
189 }
190
191 static void wt_status_collect_changed_cb(struct diff_queue_struct *q,
192                                          struct diff_options *options,
193                                          void *data)
194 {
195         struct wt_status *s = data;
196         int i;
197
198         if (!q->nr)
199                 return;
200         s->workdir_dirty = 1;
201         for (i = 0; i < q->nr; i++) {
202                 struct diff_filepair *p;
203                 struct string_list_item *it;
204                 struct wt_status_change_data *d;
205
206                 p = q->queue[i];
207                 it = string_list_insert(p->one->path, &s->change);
208                 d = it->util;
209                 if (!d) {
210                         d = xcalloc(1, sizeof(*d));
211                         it->util = d;
212                 }
213                 if (!d->worktree_status)
214                         d->worktree_status = p->status;
215         }
216 }
217
218 static int unmerged_mask(const char *path)
219 {
220         int pos, mask;
221         struct cache_entry *ce;
222
223         pos = cache_name_pos(path, strlen(path));
224         if (0 <= pos)
225                 return 0;
226
227         mask = 0;
228         pos = -pos-1;
229         while (pos < active_nr) {
230                 ce = active_cache[pos++];
231                 if (strcmp(ce->name, path) || !ce_stage(ce))
232                         break;
233                 mask |= (1 << (ce_stage(ce) - 1));
234         }
235         return mask;
236 }
237
238 static void wt_status_collect_updated_cb(struct diff_queue_struct *q,
239                                          struct diff_options *options,
240                                          void *data)
241 {
242         struct wt_status *s = data;
243         int i;
244
245         for (i = 0; i < q->nr; i++) {
246                 struct diff_filepair *p;
247                 struct string_list_item *it;
248                 struct wt_status_change_data *d;
249
250                 p = q->queue[i];
251                 it = string_list_insert(p->two->path, &s->change);
252                 d = it->util;
253                 if (!d) {
254                         d = xcalloc(1, sizeof(*d));
255                         it->util = d;
256                 }
257                 if (!d->index_status)
258                         d->index_status = p->status;
259                 switch (p->status) {
260                 case DIFF_STATUS_COPIED:
261                 case DIFF_STATUS_RENAMED:
262                         d->head_path = xstrdup(p->one->path);
263                         break;
264                 case DIFF_STATUS_UNMERGED:
265                         d->stagemask = unmerged_mask(p->two->path);
266                         break;
267                 }
268         }
269 }
270
271 static void wt_status_collect_changes_worktree(struct wt_status *s)
272 {
273         struct rev_info rev;
274
275         init_revisions(&rev, NULL);
276         setup_revisions(0, NULL, &rev, NULL);
277         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
278         rev.diffopt.format_callback = wt_status_collect_changed_cb;
279         rev.diffopt.format_callback_data = s;
280         run_diff_files(&rev, 0);
281 }
282
283 static void wt_status_collect_changes_index(struct wt_status *s)
284 {
285         struct rev_info rev;
286
287         init_revisions(&rev, NULL);
288         setup_revisions(0, NULL, &rev,
289                 s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference);
290         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
291         rev.diffopt.format_callback = wt_status_collect_updated_cb;
292         rev.diffopt.format_callback_data = s;
293         rev.diffopt.detect_rename = 1;
294         rev.diffopt.rename_limit = 200;
295         rev.diffopt.break_opt = 0;
296         run_diff_index(&rev, 1);
297 }
298
299 static void wt_status_collect_changes_initial(struct wt_status *s)
300 {
301         int i;
302
303         for (i = 0; i < active_nr; i++) {
304                 struct string_list_item *it;
305                 struct wt_status_change_data *d;
306                 struct cache_entry *ce = active_cache[i];
307
308                 it = string_list_insert(ce->name, &s->change);
309                 d = it->util;
310                 if (!d) {
311                         d = xcalloc(1, sizeof(*d));
312                         it->util = d;
313                 }
314                 if (ce_stage(ce)) {
315                         d->index_status = DIFF_STATUS_UNMERGED;
316                         d->stagemask |= (1 << (ce_stage(ce) - 1));
317                 }
318                 else
319                         d->index_status = DIFF_STATUS_ADDED;
320         }
321 }
322
323 static void wt_status_collect_untracked(struct wt_status *s)
324 {
325         int i;
326         struct dir_struct dir;
327
328         if (!s->show_untracked_files)
329                 return;
330         memset(&dir, 0, sizeof(dir));
331         if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
332                 dir.flags |=
333                         DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
334         setup_standard_excludes(&dir);
335
336         fill_directory(&dir, NULL);
337         for (i = 0; i < dir.nr; i++) {
338                 struct dir_entry *ent = dir.entries[i];
339                 if (!cache_name_is_other(ent->name, ent->len))
340                         continue;
341                 s->workdir_untracked = 1;
342                 string_list_insert(ent->name, &s->untracked);
343         }
344 }
345
346 void wt_status_collect(struct wt_status *s)
347 {
348         wt_status_collect_changes_worktree(s);
349
350         if (s->is_initial)
351                 wt_status_collect_changes_initial(s);
352         else
353                 wt_status_collect_changes_index(s);
354         wt_status_collect_untracked(s);
355 }
356
357 static void wt_status_print_unmerged(struct wt_status *s)
358 {
359         int shown_header = 0;
360         int i;
361
362         for (i = 0; i < s->change.nr; i++) {
363                 struct wt_status_change_data *d;
364                 struct string_list_item *it;
365                 it = &(s->change.items[i]);
366                 d = it->util;
367                 if (!d->stagemask)
368                         continue;
369                 if (!shown_header) {
370                         wt_status_print_unmerged_header(s);
371                         shown_header = 1;
372                 }
373                 wt_status_print_unmerged_data(s, it);
374         }
375         if (shown_header)
376                 wt_status_print_trailer(s);
377
378 }
379
380 static void wt_status_print_updated(struct wt_status *s)
381 {
382         int shown_header = 0;
383         int i;
384
385         for (i = 0; i < s->change.nr; i++) {
386                 struct wt_status_change_data *d;
387                 struct string_list_item *it;
388                 it = &(s->change.items[i]);
389                 d = it->util;
390                 if (!d->index_status ||
391                     d->index_status == DIFF_STATUS_UNMERGED)
392                         continue;
393                 if (!shown_header) {
394                         wt_status_print_cached_header(s);
395                         s->commitable = 1;
396                         shown_header = 1;
397                 }
398                 wt_status_print_change_data(s, WT_STATUS_UPDATED, it);
399         }
400         if (shown_header)
401                 wt_status_print_trailer(s);
402 }
403
404 /*
405  * -1 : has delete
406  *  0 : no change
407  *  1 : some change but no delete
408  */
409 static int wt_status_check_worktree_changes(struct wt_status *s)
410 {
411         int i;
412         int changes = 0;
413
414         for (i = 0; i < s->change.nr; i++) {
415                 struct wt_status_change_data *d;
416                 d = s->change.items[i].util;
417                 if (!d->worktree_status ||
418                     d->worktree_status == DIFF_STATUS_UNMERGED)
419                         continue;
420                 changes = 1;
421                 if (d->worktree_status == DIFF_STATUS_DELETED)
422                         return -1;
423         }
424         return changes;
425 }
426
427 static void wt_status_print_changed(struct wt_status *s)
428 {
429         int i;
430         int worktree_changes = wt_status_check_worktree_changes(s);
431
432         if (!worktree_changes)
433                 return;
434
435         wt_status_print_dirty_header(s, worktree_changes < 0);
436
437         for (i = 0; i < s->change.nr; i++) {
438                 struct wt_status_change_data *d;
439                 struct string_list_item *it;
440                 it = &(s->change.items[i]);
441                 d = it->util;
442                 if (!d->worktree_status ||
443                     d->worktree_status == DIFF_STATUS_UNMERGED)
444                         continue;
445                 wt_status_print_change_data(s, WT_STATUS_CHANGED, it);
446         }
447         wt_status_print_trailer(s);
448 }
449
450 static void wt_status_print_submodule_summary(struct wt_status *s)
451 {
452         struct child_process sm_summary;
453         char summary_limit[64];
454         char index[PATH_MAX];
455         const char *env[] = { index, NULL };
456         const char *argv[] = {
457                 "submodule",
458                 "summary",
459                 "--cached",
460                 "--for-status",
461                 "--summary-limit",
462                 summary_limit,
463                 s->amend ? "HEAD^" : "HEAD",
464                 NULL
465         };
466
467         sprintf(summary_limit, "%d", s->submodule_summary);
468         snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", s->index_file);
469
470         memset(&sm_summary, 0, sizeof(sm_summary));
471         sm_summary.argv = argv;
472         sm_summary.env = env;
473         sm_summary.git_cmd = 1;
474         sm_summary.no_stdin = 1;
475         fflush(s->fp);
476         sm_summary.out = dup(fileno(s->fp));    /* run_command closes it */
477         run_command(&sm_summary);
478 }
479
480 static void wt_status_print_untracked(struct wt_status *s)
481 {
482         int i;
483         struct strbuf buf = STRBUF_INIT;
484
485         if (!s->untracked.nr)
486                 return;
487
488         wt_status_print_untracked_header(s);
489         for (i = 0; i < s->untracked.nr; i++) {
490                 struct string_list_item *it;
491                 it = &(s->untracked.items[i]);
492                 color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "#\t");
493                 color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED, s), "%s",
494                                  quote_path(it->string, strlen(it->string),
495                                             &buf, s->prefix));
496         }
497         strbuf_release(&buf);
498 }
499
500 static void wt_status_print_verbose(struct wt_status *s)
501 {
502         struct rev_info rev;
503
504         init_revisions(&rev, NULL);
505         DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
506         setup_revisions(0, NULL, &rev,
507                 s->is_initial ? EMPTY_TREE_SHA1_HEX : s->reference);
508         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
509         rev.diffopt.detect_rename = 1;
510         rev.diffopt.file = s->fp;
511         rev.diffopt.close_file = 0;
512         /*
513          * If we're not going to stdout, then we definitely don't
514          * want color, since we are going to the commit message
515          * file (and even the "auto" setting won't work, since it
516          * will have checked isatty on stdout).
517          */
518         if (s->fp != stdout)
519                 DIFF_OPT_CLR(&rev.diffopt, COLOR_DIFF);
520         run_diff_index(&rev, 1);
521 }
522
523 static void wt_status_print_tracking(struct wt_status *s)
524 {
525         struct strbuf sb = STRBUF_INIT;
526         const char *cp, *ep;
527         struct branch *branch;
528
529         assert(s->branch && !s->is_initial);
530         if (prefixcmp(s->branch, "refs/heads/"))
531                 return;
532         branch = branch_get(s->branch + 11);
533         if (!format_tracking_info(branch, &sb))
534                 return;
535
536         for (cp = sb.buf; (ep = strchr(cp, '\n')) != NULL; cp = ep + 1)
537                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s),
538                                  "# %.*s", (int)(ep - cp), cp);
539         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
540 }
541
542 void wt_status_print(struct wt_status *s)
543 {
544         unsigned char sha1[20];
545         const char *branch_color = color(WT_STATUS_HEADER, s);
546
547         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
548         if (s->branch) {
549                 const char *on_what = "On branch ";
550                 const char *branch_name = s->branch;
551                 if (!prefixcmp(branch_name, "refs/heads/"))
552                         branch_name += 11;
553                 else if (!strcmp(branch_name, "HEAD")) {
554                         branch_name = "";
555                         branch_color = color(WT_STATUS_NOBRANCH, s);
556                         on_what = "Not currently on any branch.";
557                 }
558                 color_fprintf(s->fp, color(WT_STATUS_HEADER, s), "# ");
559                 color_fprintf_ln(s->fp, branch_color, "%s%s", on_what, branch_name);
560                 if (!s->is_initial)
561                         wt_status_print_tracking(s);
562         }
563
564         wt_status_collect(s);
565
566         if (s->is_initial) {
567                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
568                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "# Initial commit");
569                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "#");
570         }
571
572         wt_status_print_updated(s);
573         wt_status_print_unmerged(s);
574         wt_status_print_changed(s);
575         if (s->submodule_summary)
576                 wt_status_print_submodule_summary(s);
577         if (s->show_untracked_files)
578                 wt_status_print_untracked(s);
579         else if (s->commitable)
580                  fprintf(s->fp, "# Untracked files not listed (use -u option to show untracked files)\n");
581
582         if (s->verbose)
583                 wt_status_print_verbose(s);
584         if (!s->commitable) {
585                 if (s->amend)
586                         fprintf(s->fp, "# No changes\n");
587                 else if (s->nowarn)
588                         ; /* nothing */
589                 else if (s->workdir_dirty)
590                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
591                 else if (s->untracked.nr)
592                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
593                 else if (s->is_initial)
594                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
595                 else if (!s->show_untracked_files)
596                         printf("nothing to commit (use -u to show untracked files)\n");
597                 else
598                         printf("nothing to commit (working directory clean)\n");
599         }
600 }