Merge branch 'cc/hooks-doc'
[git] / wt-status.c
1 #include "cache.h"
2 #include "wt-status.h"
3 #include "color.h"
4 #include "object.h"
5 #include "dir.h"
6 #include "commit.h"
7 #include "diff.h"
8 #include "revision.h"
9 #include "diffcore.h"
10 #include "quote.h"
11 #include "run-command.h"
12
13 int wt_status_relative_paths = 1;
14 int wt_status_use_color = -1;
15 int wt_status_submodule_summary;
16 static char wt_status_colors[][COLOR_MAXLEN] = {
17         "",         /* WT_STATUS_HEADER: normal */
18         "\033[32m", /* WT_STATUS_UPDATED: green */
19         "\033[31m", /* WT_STATUS_CHANGED: red */
20         "\033[31m", /* WT_STATUS_UNTRACKED: red */
21 };
22
23 static const char use_add_msg[] =
24 "use \"git add <file>...\" to update what will be committed";
25 static const char use_add_rm_msg[] =
26 "use \"git add/rm <file>...\" to update what will be committed";
27 static const char use_add_to_include_msg[] =
28 "use \"git add <file>...\" to include in what will be committed";
29
30 static int parse_status_slot(const char *var, int offset)
31 {
32         if (!strcasecmp(var+offset, "header"))
33                 return WT_STATUS_HEADER;
34         if (!strcasecmp(var+offset, "updated")
35                 || !strcasecmp(var+offset, "added"))
36                 return WT_STATUS_UPDATED;
37         if (!strcasecmp(var+offset, "changed"))
38                 return WT_STATUS_CHANGED;
39         if (!strcasecmp(var+offset, "untracked"))
40                 return WT_STATUS_UNTRACKED;
41         die("bad config variable '%s'", var);
42 }
43
44 static const char* color(int slot)
45 {
46         return wt_status_use_color > 0 ? wt_status_colors[slot] : "";
47 }
48
49 void wt_status_prepare(struct wt_status *s)
50 {
51         unsigned char sha1[20];
52         const char *head;
53
54         memset(s, 0, sizeof(*s));
55         head = resolve_ref("HEAD", sha1, 0, NULL);
56         s->branch = head ? xstrdup(head) : NULL;
57         s->reference = "HEAD";
58         s->fp = stdout;
59         s->index_file = get_index_file();
60 }
61
62 static void wt_status_print_cached_header(struct wt_status *s)
63 {
64         const char *c = color(WT_STATUS_HEADER);
65         color_fprintf_ln(s->fp, c, "# Changes to be committed:");
66         if (!s->is_initial) {
67                 color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
68         } else {
69                 color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
70         }
71         color_fprintf_ln(s->fp, c, "#");
72 }
73
74 static void wt_status_print_header(struct wt_status *s,
75                                    const char *main, const char *sub)
76 {
77         const char *c = color(WT_STATUS_HEADER);
78         color_fprintf_ln(s->fp, c, "# %s:", main);
79         color_fprintf_ln(s->fp, c, "#   (%s)", sub);
80         color_fprintf_ln(s->fp, c, "#");
81 }
82
83 static void wt_status_print_trailer(struct wt_status *s)
84 {
85         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
86 }
87
88 #define quote_path quote_path_relative
89
90 static void wt_status_print_filepair(struct wt_status *s,
91                                      int t, struct diff_filepair *p)
92 {
93         const char *c = color(t);
94         const char *one, *two;
95         struct strbuf onebuf, twobuf;
96
97         strbuf_init(&onebuf, 0);
98         strbuf_init(&twobuf, 0);
99         one = quote_path(p->one->path, -1, &onebuf, s->prefix);
100         two = quote_path(p->two->path, -1, &twobuf, s->prefix);
101
102         color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
103         switch (p->status) {
104         case DIFF_STATUS_ADDED:
105                 color_fprintf(s->fp, c, "new file:   %s", one);
106                 break;
107         case DIFF_STATUS_COPIED:
108                 color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
109                 break;
110         case DIFF_STATUS_DELETED:
111                 color_fprintf(s->fp, c, "deleted:    %s", one);
112                 break;
113         case DIFF_STATUS_MODIFIED:
114                 color_fprintf(s->fp, c, "modified:   %s", one);
115                 break;
116         case DIFF_STATUS_RENAMED:
117                 color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
118                 break;
119         case DIFF_STATUS_TYPE_CHANGED:
120                 color_fprintf(s->fp, c, "typechange: %s", one);
121                 break;
122         case DIFF_STATUS_UNKNOWN:
123                 color_fprintf(s->fp, c, "unknown:    %s", one);
124                 break;
125         case DIFF_STATUS_UNMERGED:
126                 color_fprintf(s->fp, c, "unmerged:   %s", one);
127                 break;
128         default:
129                 die("bug: unhandled diff status %c", p->status);
130         }
131         fprintf(s->fp, "\n");
132         strbuf_release(&onebuf);
133         strbuf_release(&twobuf);
134 }
135
136 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
137                 struct diff_options *options,
138                 void *data)
139 {
140         struct wt_status *s = data;
141         int shown_header = 0;
142         int i;
143         for (i = 0; i < q->nr; i++) {
144                 if (q->queue[i]->status == 'U')
145                         continue;
146                 if (!shown_header) {
147                         wt_status_print_cached_header(s);
148                         s->commitable = 1;
149                         shown_header = 1;
150                 }
151                 wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
152         }
153         if (shown_header)
154                 wt_status_print_trailer(s);
155 }
156
157 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
158                         struct diff_options *options,
159                         void *data)
160 {
161         struct wt_status *s = data;
162         int i;
163         if (q->nr) {
164                 const char *msg = use_add_msg;
165                 s->workdir_dirty = 1;
166                 for (i = 0; i < q->nr; i++)
167                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
168                                 msg = use_add_rm_msg;
169                                 break;
170                         }
171                 wt_status_print_header(s, "Changed but not updated", msg);
172         }
173         for (i = 0; i < q->nr; i++)
174                 wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
175         if (q->nr)
176                 wt_status_print_trailer(s);
177 }
178
179 static void wt_status_print_initial(struct wt_status *s)
180 {
181         int i;
182         struct strbuf buf;
183
184         strbuf_init(&buf, 0);
185         if (active_nr) {
186                 s->commitable = 1;
187                 wt_status_print_cached_header(s);
188         }
189         for (i = 0; i < active_nr; i++) {
190                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
191                 color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
192                                 quote_path(active_cache[i]->name, -1,
193                                            &buf, s->prefix));
194         }
195         if (active_nr)
196                 wt_status_print_trailer(s);
197         strbuf_release(&buf);
198 }
199
200 static void wt_status_print_updated(struct wt_status *s)
201 {
202         struct rev_info rev;
203         init_revisions(&rev, NULL);
204         setup_revisions(0, NULL, &rev, s->reference);
205         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
206         rev.diffopt.format_callback = wt_status_print_updated_cb;
207         rev.diffopt.format_callback_data = s;
208         rev.diffopt.detect_rename = 1;
209         rev.diffopt.rename_limit = 200;
210         rev.diffopt.break_opt = 0;
211         run_diff_index(&rev, 1);
212 }
213
214 static void wt_status_print_changed(struct wt_status *s)
215 {
216         struct rev_info rev;
217         init_revisions(&rev, "");
218         setup_revisions(0, NULL, &rev, NULL);
219         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
220         rev.diffopt.format_callback = wt_status_print_changed_cb;
221         rev.diffopt.format_callback_data = s;
222         run_diff_files(&rev, 0);
223 }
224
225 static void wt_status_print_submodule_summary(struct wt_status *s)
226 {
227         struct child_process sm_summary;
228         char summary_limit[64];
229         char index[PATH_MAX];
230         const char *env[] = { index, NULL };
231         const char *argv[] = {
232                 "submodule",
233                 "summary",
234                 "--cached",
235                 "--for-status",
236                 "--summary-limit",
237                 summary_limit,
238                 s->amend ? "HEAD^" : "HEAD",
239                 NULL
240         };
241
242         sprintf(summary_limit, "%d", wt_status_submodule_summary);
243         snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", s->index_file);
244
245         memset(&sm_summary, 0, sizeof(sm_summary));
246         sm_summary.argv = argv;
247         sm_summary.env = env;
248         sm_summary.git_cmd = 1;
249         sm_summary.no_stdin = 1;
250         fflush(s->fp);
251         sm_summary.out = dup(fileno(s->fp));    /* run_command closes it */
252         run_command(&sm_summary);
253 }
254
255 static void wt_status_print_untracked(struct wt_status *s)
256 {
257         struct dir_struct dir;
258         int i;
259         int shown_header = 0;
260         struct strbuf buf;
261
262         strbuf_init(&buf, 0);
263         memset(&dir, 0, sizeof(dir));
264
265         if (!s->untracked) {
266                 dir.show_other_directories = 1;
267                 dir.hide_empty_directories = 1;
268         }
269         setup_standard_excludes(&dir);
270
271         read_directory(&dir, ".", "", 0, NULL);
272         for(i = 0; i < dir.nr; i++) {
273                 /* check for matching entry, which is unmerged; lifted from
274                  * builtin-ls-files:show_other_files */
275                 struct dir_entry *ent = dir.entries[i];
276                 int pos = cache_name_pos(ent->name, ent->len);
277                 struct cache_entry *ce;
278                 if (0 <= pos)
279                         die("bug in wt_status_print_untracked");
280                 pos = -pos - 1;
281                 if (pos < active_nr) {
282                         ce = active_cache[pos];
283                         if (ce_namelen(ce) == ent->len &&
284                             !memcmp(ce->name, ent->name, ent->len))
285                                 continue;
286                 }
287                 if (!shown_header) {
288                         s->workdir_untracked = 1;
289                         wt_status_print_header(s, "Untracked files",
290                                                use_add_to_include_msg);
291                         shown_header = 1;
292                 }
293                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
294                 color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%s",
295                                 quote_path(ent->name, ent->len,
296                                         &buf, s->prefix));
297         }
298         strbuf_release(&buf);
299 }
300
301 static void wt_status_print_verbose(struct wt_status *s)
302 {
303         struct rev_info rev;
304
305         init_revisions(&rev, NULL);
306         setup_revisions(0, NULL, &rev, s->reference);
307         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
308         rev.diffopt.detect_rename = 1;
309         rev.diffopt.file = s->fp;
310         rev.diffopt.close_file = 0;
311         run_diff_index(&rev, 1);
312 }
313
314 void wt_status_print(struct wt_status *s)
315 {
316         unsigned char sha1[20];
317         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
318
319         if (s->branch) {
320                 const char *on_what = "On branch ";
321                 const char *branch_name = s->branch;
322                 if (!prefixcmp(branch_name, "refs/heads/"))
323                         branch_name += 11;
324                 else if (!strcmp(branch_name, "HEAD")) {
325                         branch_name = "";
326                         on_what = "Not currently on any branch.";
327                 }
328                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
329                         "# %s%s", on_what, branch_name);
330         }
331
332         if (s->is_initial) {
333                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
334                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
335                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
336                 wt_status_print_initial(s);
337         }
338         else {
339                 wt_status_print_updated(s);
340         }
341
342         wt_status_print_changed(s);
343         if (wt_status_submodule_summary)
344                 wt_status_print_submodule_summary(s);
345         wt_status_print_untracked(s);
346
347         if (s->verbose && !s->is_initial)
348                 wt_status_print_verbose(s);
349         if (!s->commitable) {
350                 if (s->amend)
351                         fprintf(s->fp, "# No changes\n");
352                 else if (s->nowarn)
353                         ; /* nothing */
354                 else if (s->workdir_dirty)
355                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
356                 else if (s->workdir_untracked)
357                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
358                 else if (s->is_initial)
359                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
360                 else
361                         printf("nothing to commit (working directory clean)\n");
362         }
363 }
364
365 int git_status_config(const char *k, const char *v)
366 {
367         if (!strcmp(k, "status.submodulesummary")) {
368                 int is_bool;
369                 wt_status_submodule_summary = git_config_bool_or_int(k, v, &is_bool);
370                 if (is_bool && wt_status_submodule_summary)
371                         wt_status_submodule_summary = -1;
372                 return 0;
373         }
374         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
375                 wt_status_use_color = git_config_colorbool(k, v, -1);
376                 return 0;
377         }
378         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
379                 int slot = parse_status_slot(k, 13);
380                 if (!v)
381                         return config_error_nonbool(k);
382                 color_parse(v, k, wt_status_colors[slot]);
383                 return 0;
384         }
385         if (!strcmp(k, "status.relativepaths")) {
386                 wt_status_relative_paths = git_config_bool(k, v);
387                 return 0;
388         }
389         return git_color_default_config(k, v);
390 }