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