Merge branch 'sp/refspec-match'
[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         memset(s, 0, sizeof(*s));
51         head = resolve_ref("HEAD", sha1, 0, NULL);
52         s->branch = head ? xstrdup(head) : NULL;
53         s->reference = "HEAD";
54         s->fp = stdout;
55         s->index_file = get_index_file();
56 }
57
58 static void wt_status_print_cached_header(struct wt_status *s)
59 {
60         const char *c = color(WT_STATUS_HEADER);
61         color_fprintf_ln(s->fp, c, "# Changes to be committed:");
62         if (s->reference) {
63                 color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
64         } else {
65                 color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
66         }
67         color_fprintf_ln(s->fp, c, "#");
68 }
69
70 static void wt_status_print_header(struct wt_status *s,
71                                    const char *main, const char *sub)
72 {
73         const char *c = color(WT_STATUS_HEADER);
74         color_fprintf_ln(s->fp, c, "# %s:", main);
75         color_fprintf_ln(s->fp, c, "#   (%s)", sub);
76         color_fprintf_ln(s->fp, c, "#");
77 }
78
79 static void wt_status_print_trailer(struct wt_status *s)
80 {
81         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
82 }
83
84 static const char *quote_crlf(const char *in, char *buf, size_t sz)
85 {
86         const char *scan;
87         char *out;
88         const char *ret = in;
89
90         for (scan = in, out = buf; *scan; scan++) {
91                 int ch = *scan;
92                 int quoted;
93
94                 switch (ch) {
95                 case '\n':
96                         quoted = 'n';
97                         break;
98                 case '\r':
99                         quoted = 'r';
100                         break;
101                 default:
102                         *out++ = ch;
103                         continue;
104                 }
105                 *out++ = '\\';
106                 *out++ = quoted;
107                 ret = buf;
108         }
109         *out = '\0';
110         return ret;
111 }
112
113 static void wt_status_print_filepair(struct wt_status *s,
114                                      int t, struct diff_filepair *p)
115 {
116         const char *c = color(t);
117         const char *one, *two;
118         char onebuf[PATH_MAX], twobuf[PATH_MAX];
119
120         one = quote_crlf(p->one->path, onebuf, sizeof(onebuf));
121         two = quote_crlf(p->two->path, twobuf, sizeof(twobuf));
122
123         color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
124         switch (p->status) {
125         case DIFF_STATUS_ADDED:
126                 color_fprintf(s->fp, c, "new file:   %s", one);
127                 break;
128         case DIFF_STATUS_COPIED:
129                 color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
130                 break;
131         case DIFF_STATUS_DELETED:
132                 color_fprintf(s->fp, c, "deleted:    %s", one);
133                 break;
134         case DIFF_STATUS_MODIFIED:
135                 color_fprintf(s->fp, c, "modified:   %s", one);
136                 break;
137         case DIFF_STATUS_RENAMED:
138                 color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
139                 break;
140         case DIFF_STATUS_TYPE_CHANGED:
141                 color_fprintf(s->fp, c, "typechange: %s", one);
142                 break;
143         case DIFF_STATUS_UNKNOWN:
144                 color_fprintf(s->fp, c, "unknown:    %s", one);
145                 break;
146         case DIFF_STATUS_UNMERGED:
147                 color_fprintf(s->fp, c, "unmerged:   %s", one);
148                 break;
149         default:
150                 die("bug: unhandled diff status %c", p->status);
151         }
152         fprintf(s->fp, "\n");
153 }
154
155 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
156                 struct diff_options *options,
157                 void *data)
158 {
159         struct wt_status *s = data;
160         int shown_header = 0;
161         int i;
162         for (i = 0; i < q->nr; i++) {
163                 if (q->queue[i]->status == 'U')
164                         continue;
165                 if (!shown_header) {
166                         wt_status_print_cached_header(s);
167                         s->commitable = 1;
168                         shown_header = 1;
169                 }
170                 wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
171         }
172         if (shown_header)
173                 wt_status_print_trailer(s);
174 }
175
176 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
177                         struct diff_options *options,
178                         void *data)
179 {
180         struct wt_status *s = data;
181         int i;
182         if (q->nr) {
183                 const char *msg = use_add_msg;
184                 s->workdir_dirty = 1;
185                 for (i = 0; i < q->nr; i++)
186                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
187                                 msg = use_add_rm_msg;
188                                 break;
189                         }
190                 wt_status_print_header(s, "Changed but not updated", msg);
191         }
192         for (i = 0; i < q->nr; i++)
193                 wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
194         if (q->nr)
195                 wt_status_print_trailer(s);
196 }
197
198 static void wt_read_cache(struct wt_status *s)
199 {
200         discard_cache();
201         read_cache_from(s->index_file);
202 }
203
204 static void wt_status_print_initial(struct wt_status *s)
205 {
206         int i;
207         char buf[PATH_MAX];
208
209         wt_read_cache(s);
210         if (active_nr) {
211                 s->commitable = 1;
212                 wt_status_print_cached_header(s);
213         }
214         for (i = 0; i < active_nr; i++) {
215                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
216                 color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
217                                 quote_crlf(active_cache[i]->name,
218                                            buf, sizeof(buf)));
219         }
220         if (active_nr)
221                 wt_status_print_trailer(s);
222 }
223
224 static void wt_status_print_updated(struct wt_status *s)
225 {
226         struct rev_info rev;
227         init_revisions(&rev, NULL);
228         setup_revisions(0, NULL, &rev, s->reference);
229         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
230         rev.diffopt.format_callback = wt_status_print_updated_cb;
231         rev.diffopt.format_callback_data = s;
232         rev.diffopt.detect_rename = 1;
233         rev.diffopt.rename_limit = 100;
234         rev.diffopt.break_opt = 0;
235         wt_read_cache(s);
236         run_diff_index(&rev, 1);
237 }
238
239 static void wt_status_print_changed(struct wt_status *s)
240 {
241         struct rev_info rev;
242         init_revisions(&rev, "");
243         setup_revisions(0, NULL, &rev, NULL);
244         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
245         rev.diffopt.format_callback = wt_status_print_changed_cb;
246         rev.diffopt.format_callback_data = s;
247         wt_read_cache(s);
248         run_diff_files(&rev, 0);
249 }
250
251 static void wt_status_print_untracked(struct wt_status *s)
252 {
253         struct dir_struct dir;
254         int i;
255         int shown_header = 0;
256
257         memset(&dir, 0, sizeof(dir));
258
259         if (!s->untracked) {
260                 dir.show_other_directories = 1;
261                 dir.hide_empty_directories = 1;
262         }
263         setup_standard_excludes(&dir);
264
265         read_directory(&dir, ".", "", 0, NULL);
266         for(i = 0; i < dir.nr; i++) {
267                 /* check for matching entry, which is unmerged; lifted from
268                  * builtin-ls-files:show_other_files */
269                 struct dir_entry *ent = dir.entries[i];
270                 int pos = cache_name_pos(ent->name, ent->len);
271                 struct cache_entry *ce;
272                 if (0 <= pos)
273                         die("bug in wt_status_print_untracked");
274                 pos = -pos - 1;
275                 if (pos < active_nr) {
276                         ce = active_cache[pos];
277                         if (ce_namelen(ce) == ent->len &&
278                             !memcmp(ce->name, ent->name, ent->len))
279                                 continue;
280                 }
281                 if (!shown_header) {
282                         s->workdir_untracked = 1;
283                         wt_status_print_header(s, "Untracked files",
284                                                use_add_to_include_msg);
285                         shown_header = 1;
286                 }
287                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
288                 color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%.*s",
289                                 ent->len, ent->name);
290         }
291 }
292
293 static void wt_status_print_verbose(struct wt_status *s)
294 {
295         struct rev_info rev;
296         init_revisions(&rev, NULL);
297         setup_revisions(0, NULL, &rev, s->reference);
298         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
299         rev.diffopt.detect_rename = 1;
300         wt_read_cache(s);
301         run_diff_index(&rev, 1);
302 }
303
304 void wt_status_print(struct wt_status *s)
305 {
306         unsigned char sha1[20];
307         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
308
309         if (s->branch) {
310                 const char *on_what = "On branch ";
311                 const char *branch_name = s->branch;
312                 if (!prefixcmp(branch_name, "refs/heads/"))
313                         branch_name += 11;
314                 else if (!strcmp(branch_name, "HEAD")) {
315                         branch_name = "";
316                         on_what = "Not currently on any branch.";
317                 }
318                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
319                         "# %s%s", on_what, branch_name);
320         }
321
322         if (s->is_initial) {
323                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
324                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
325                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
326                 wt_status_print_initial(s);
327         }
328         else {
329                 wt_status_print_updated(s);
330         }
331
332         wt_status_print_changed(s);
333         wt_status_print_untracked(s);
334
335         if (s->verbose && !s->is_initial)
336                 wt_status_print_verbose(s);
337         if (!s->commitable) {
338                 if (s->amend)
339                         fprintf(s->fp, "# No changes\n");
340                 else if (s->workdir_dirty)
341                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
342                 else if (s->workdir_untracked)
343                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
344                 else if (s->is_initial)
345                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
346                 else
347                         printf("nothing to commit (working directory clean)\n");
348         }
349 }
350
351 int git_status_config(const char *k, const char *v)
352 {
353         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
354                 wt_status_use_color = git_config_colorbool(k, v);
355                 return 0;
356         }
357         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
358                 int slot = parse_status_slot(k, 13);
359                 color_parse(v, k, wt_status_colors[slot]);
360         }
361         return git_default_config(k, v);
362 }