Turn builtin_exec_path into a function.
[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         "\033[31m", /* WT_STATUS_NOBRANCH: red */
22 };
23
24 static const char use_add_msg[] =
25 "use \"git add <file>...\" to update what will be committed";
26 static const char use_add_rm_msg[] =
27 "use \"git add/rm <file>...\" to update what will be committed";
28 static const char use_add_to_include_msg[] =
29 "use \"git add <file>...\" to include in what will be committed";
30
31 static int parse_status_slot(const char *var, int offset)
32 {
33         if (!strcasecmp(var+offset, "header"))
34                 return WT_STATUS_HEADER;
35         if (!strcasecmp(var+offset, "updated")
36                 || !strcasecmp(var+offset, "added"))
37                 return WT_STATUS_UPDATED;
38         if (!strcasecmp(var+offset, "changed"))
39                 return WT_STATUS_CHANGED;
40         if (!strcasecmp(var+offset, "untracked"))
41                 return WT_STATUS_UNTRACKED;
42         if (!strcasecmp(var+offset, "nobranch"))
43                 return WT_STATUS_NOBRANCH;
44         die("bad config variable '%s'", var);
45 }
46
47 static const char* color(int slot)
48 {
49         return wt_status_use_color > 0 ? wt_status_colors[slot] : "";
50 }
51
52 void wt_status_prepare(struct wt_status *s)
53 {
54         unsigned char sha1[20];
55         const char *head;
56
57         memset(s, 0, sizeof(*s));
58         head = resolve_ref("HEAD", sha1, 0, NULL);
59         s->branch = head ? xstrdup(head) : NULL;
60         s->reference = "HEAD";
61         s->fp = stdout;
62         s->index_file = get_index_file();
63 }
64
65 static void wt_status_print_cached_header(struct wt_status *s)
66 {
67         const char *c = color(WT_STATUS_HEADER);
68         color_fprintf_ln(s->fp, c, "# Changes to be committed:");
69         if (!s->is_initial) {
70                 color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
71         } else {
72                 color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
73         }
74         color_fprintf_ln(s->fp, c, "#");
75 }
76
77 static void wt_status_print_header(struct wt_status *s,
78                                    const char *main, const char *sub)
79 {
80         const char *c = color(WT_STATUS_HEADER);
81         color_fprintf_ln(s->fp, c, "# %s:", main);
82         color_fprintf_ln(s->fp, c, "#   (%s)", sub);
83         color_fprintf_ln(s->fp, c, "#");
84 }
85
86 static void wt_status_print_trailer(struct wt_status *s)
87 {
88         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
89 }
90
91 #define quote_path quote_path_relative
92
93 static void wt_status_print_filepair(struct wt_status *s,
94                                      int t, struct diff_filepair *p)
95 {
96         const char *c = color(t);
97         const char *one, *two;
98         struct strbuf onebuf, twobuf;
99
100         strbuf_init(&onebuf, 0);
101         strbuf_init(&twobuf, 0);
102         one = quote_path(p->one->path, -1, &onebuf, s->prefix);
103         two = quote_path(p->two->path, -1, &twobuf, s->prefix);
104
105         color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
106         switch (p->status) {
107         case DIFF_STATUS_ADDED:
108                 color_fprintf(s->fp, c, "new file:   %s", one);
109                 break;
110         case DIFF_STATUS_COPIED:
111                 color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
112                 break;
113         case DIFF_STATUS_DELETED:
114                 color_fprintf(s->fp, c, "deleted:    %s", one);
115                 break;
116         case DIFF_STATUS_MODIFIED:
117                 color_fprintf(s->fp, c, "modified:   %s", one);
118                 break;
119         case DIFF_STATUS_RENAMED:
120                 color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
121                 break;
122         case DIFF_STATUS_TYPE_CHANGED:
123                 color_fprintf(s->fp, c, "typechange: %s", one);
124                 break;
125         case DIFF_STATUS_UNKNOWN:
126                 color_fprintf(s->fp, c, "unknown:    %s", one);
127                 break;
128         case DIFF_STATUS_UNMERGED:
129                 color_fprintf(s->fp, c, "unmerged:   %s", one);
130                 break;
131         default:
132                 die("bug: unhandled diff status %c", p->status);
133         }
134         fprintf(s->fp, "\n");
135         strbuf_release(&onebuf);
136         strbuf_release(&twobuf);
137 }
138
139 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
140                 struct diff_options *options,
141                 void *data)
142 {
143         struct wt_status *s = data;
144         int shown_header = 0;
145         int i;
146         for (i = 0; i < q->nr; i++) {
147                 if (q->queue[i]->status == 'U')
148                         continue;
149                 if (!shown_header) {
150                         wt_status_print_cached_header(s);
151                         s->commitable = 1;
152                         shown_header = 1;
153                 }
154                 wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
155         }
156         if (shown_header)
157                 wt_status_print_trailer(s);
158 }
159
160 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
161                         struct diff_options *options,
162                         void *data)
163 {
164         struct wt_status *s = data;
165         int i;
166         if (q->nr) {
167                 const char *msg = use_add_msg;
168                 s->workdir_dirty = 1;
169                 for (i = 0; i < q->nr; i++)
170                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
171                                 msg = use_add_rm_msg;
172                                 break;
173                         }
174                 wt_status_print_header(s, "Changed but not updated", msg);
175         }
176         for (i = 0; i < q->nr; i++)
177                 wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
178         if (q->nr)
179                 wt_status_print_trailer(s);
180 }
181
182 static void wt_status_print_initial(struct wt_status *s)
183 {
184         int i;
185         struct strbuf buf;
186
187         strbuf_init(&buf, 0);
188         if (active_nr) {
189                 s->commitable = 1;
190                 wt_status_print_cached_header(s);
191         }
192         for (i = 0; i < active_nr; i++) {
193                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
194                 color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
195                                 quote_path(active_cache[i]->name, -1,
196                                            &buf, s->prefix));
197         }
198         if (active_nr)
199                 wt_status_print_trailer(s);
200         strbuf_release(&buf);
201 }
202
203 static void wt_status_print_updated(struct wt_status *s)
204 {
205         struct rev_info rev;
206         init_revisions(&rev, NULL);
207         setup_revisions(0, NULL, &rev, s->reference);
208         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
209         rev.diffopt.format_callback = wt_status_print_updated_cb;
210         rev.diffopt.format_callback_data = s;
211         rev.diffopt.detect_rename = 1;
212         rev.diffopt.rename_limit = 200;
213         rev.diffopt.break_opt = 0;
214         run_diff_index(&rev, 1);
215 }
216
217 static void wt_status_print_changed(struct wt_status *s)
218 {
219         struct rev_info rev;
220         init_revisions(&rev, "");
221         setup_revisions(0, NULL, &rev, NULL);
222         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
223         rev.diffopt.format_callback = wt_status_print_changed_cb;
224         rev.diffopt.format_callback_data = s;
225         run_diff_files(&rev, 0);
226 }
227
228 static void wt_status_print_submodule_summary(struct wt_status *s)
229 {
230         struct child_process sm_summary;
231         char summary_limit[64];
232         char index[PATH_MAX];
233         const char *env[] = { index, NULL };
234         const char *argv[] = {
235                 "submodule",
236                 "summary",
237                 "--cached",
238                 "--for-status",
239                 "--summary-limit",
240                 summary_limit,
241                 s->amend ? "HEAD^" : "HEAD",
242                 NULL
243         };
244
245         sprintf(summary_limit, "%d", wt_status_submodule_summary);
246         snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", s->index_file);
247
248         memset(&sm_summary, 0, sizeof(sm_summary));
249         sm_summary.argv = argv;
250         sm_summary.env = env;
251         sm_summary.git_cmd = 1;
252         sm_summary.no_stdin = 1;
253         fflush(s->fp);
254         sm_summary.out = dup(fileno(s->fp));    /* run_command closes it */
255         run_command(&sm_summary);
256 }
257
258 static void wt_status_print_untracked(struct wt_status *s)
259 {
260         struct dir_struct dir;
261         int i;
262         int shown_header = 0;
263         struct strbuf buf;
264
265         strbuf_init(&buf, 0);
266         memset(&dir, 0, sizeof(dir));
267
268         if (!s->untracked) {
269                 dir.show_other_directories = 1;
270                 dir.hide_empty_directories = 1;
271         }
272         setup_standard_excludes(&dir);
273
274         read_directory(&dir, ".", "", 0, NULL);
275         for(i = 0; i < dir.nr; i++) {
276                 /* check for matching entry, which is unmerged; lifted from
277                  * builtin-ls-files:show_other_files */
278                 struct dir_entry *ent = dir.entries[i];
279                 int pos = cache_name_pos(ent->name, ent->len);
280                 struct cache_entry *ce;
281                 if (0 <= pos)
282                         die("bug in wt_status_print_untracked");
283                 pos = -pos - 1;
284                 if (pos < active_nr) {
285                         ce = active_cache[pos];
286                         if (ce_namelen(ce) == ent->len &&
287                             !memcmp(ce->name, ent->name, ent->len))
288                                 continue;
289                 }
290                 if (!shown_header) {
291                         s->workdir_untracked = 1;
292                         wt_status_print_header(s, "Untracked files",
293                                                use_add_to_include_msg);
294                         shown_header = 1;
295                 }
296                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
297                 color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%s",
298                                 quote_path(ent->name, ent->len,
299                                         &buf, s->prefix));
300         }
301         strbuf_release(&buf);
302 }
303
304 static void wt_status_print_verbose(struct wt_status *s)
305 {
306         struct rev_info rev;
307
308         init_revisions(&rev, NULL);
309         setup_revisions(0, NULL, &rev, s->reference);
310         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
311         rev.diffopt.detect_rename = 1;
312         rev.diffopt.file = s->fp;
313         rev.diffopt.close_file = 0;
314         run_diff_index(&rev, 1);
315 }
316
317 void wt_status_print(struct wt_status *s)
318 {
319         unsigned char sha1[20];
320         const char *branch_color = color(WT_STATUS_HEADER);
321
322         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
323         if (s->branch) {
324                 const char *on_what = "On branch ";
325                 const char *branch_name = s->branch;
326                 if (!prefixcmp(branch_name, "refs/heads/"))
327                         branch_name += 11;
328                 else if (!strcmp(branch_name, "HEAD")) {
329                         branch_name = "";
330                         branch_color = color(WT_STATUS_NOBRANCH);
331                         on_what = "Not currently on any branch.";
332                 }
333                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "# ");
334                 color_fprintf_ln(s->fp, branch_color, "%s%s", on_what, branch_name);
335         }
336
337         if (s->is_initial) {
338                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
339                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
340                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
341                 wt_status_print_initial(s);
342         }
343         else {
344                 wt_status_print_updated(s);
345         }
346
347         wt_status_print_changed(s);
348         if (wt_status_submodule_summary)
349                 wt_status_print_submodule_summary(s);
350         wt_status_print_untracked(s);
351
352         if (s->verbose && !s->is_initial)
353                 wt_status_print_verbose(s);
354         if (!s->commitable) {
355                 if (s->amend)
356                         fprintf(s->fp, "# No changes\n");
357                 else if (s->nowarn)
358                         ; /* nothing */
359                 else if (s->workdir_dirty)
360                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
361                 else if (s->workdir_untracked)
362                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
363                 else if (s->is_initial)
364                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
365                 else
366                         printf("nothing to commit (working directory clean)\n");
367         }
368 }
369
370 int git_status_config(const char *k, const char *v, void *cb)
371 {
372         if (!strcmp(k, "status.submodulesummary")) {
373                 int is_bool;
374                 wt_status_submodule_summary = git_config_bool_or_int(k, v, &is_bool);
375                 if (is_bool && wt_status_submodule_summary)
376                         wt_status_submodule_summary = -1;
377                 return 0;
378         }
379         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
380                 wt_status_use_color = git_config_colorbool(k, v, -1);
381                 return 0;
382         }
383         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
384                 int slot = parse_status_slot(k, 13);
385                 if (!v)
386                         return config_error_nonbool(k);
387                 color_parse(v, k, wt_status_colors[slot]);
388                 return 0;
389         }
390         if (!strcmp(k, "status.relativepaths")) {
391                 wt_status_relative_paths = git_config_bool(k, v);
392                 return 0;
393         }
394         return git_color_default_config(k, v, cb);
395 }