git-bundle.txt: Add different strategies to create the bundle
[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_relative_paths = 1;
12 int wt_status_use_color = -1;
13 static char wt_status_colors[][COLOR_MAXLEN] = {
14         "",         /* WT_STATUS_HEADER: normal */
15         "\033[32m", /* WT_STATUS_UPDATED: green */
16         "\033[31m", /* WT_STATUS_CHANGED: red */
17         "\033[31m", /* WT_STATUS_UNTRACKED: red */
18 };
19
20 static const char use_add_msg[] =
21 "use \"git add <file>...\" to update what will be committed";
22 static const char use_add_rm_msg[] =
23 "use \"git add/rm <file>...\" to update what will be committed";
24 static const char use_add_to_include_msg[] =
25 "use \"git add <file>...\" to include in what will be committed";
26
27 static int parse_status_slot(const char *var, int offset)
28 {
29         if (!strcasecmp(var+offset, "header"))
30                 return WT_STATUS_HEADER;
31         if (!strcasecmp(var+offset, "updated")
32                 || !strcasecmp(var+offset, "added"))
33                 return WT_STATUS_UPDATED;
34         if (!strcasecmp(var+offset, "changed"))
35                 return WT_STATUS_CHANGED;
36         if (!strcasecmp(var+offset, "untracked"))
37                 return WT_STATUS_UNTRACKED;
38         die("bad config variable '%s'", var);
39 }
40
41 static const char* color(int slot)
42 {
43         return wt_status_use_color > 0 ? wt_status_colors[slot] : "";
44 }
45
46 void wt_status_prepare(struct wt_status *s)
47 {
48         unsigned char sha1[20];
49         const char *head;
50
51         memset(s, 0, sizeof(*s));
52         head = resolve_ref("HEAD", sha1, 0, NULL);
53         s->branch = head ? xstrdup(head) : NULL;
54         s->reference = "HEAD";
55         s->fp = stdout;
56         s->index_file = get_index_file();
57 }
58
59 static void wt_status_print_cached_header(struct wt_status *s)
60 {
61         const char *c = color(WT_STATUS_HEADER);
62         color_fprintf_ln(s->fp, c, "# Changes to be committed:");
63         if (!s->is_initial) {
64                 color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
65         } else {
66                 color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
67         }
68         color_fprintf_ln(s->fp, c, "#");
69 }
70
71 static void wt_status_print_header(struct wt_status *s,
72                                    const char *main, const char *sub)
73 {
74         const char *c = color(WT_STATUS_HEADER);
75         color_fprintf_ln(s->fp, c, "# %s:", main);
76         color_fprintf_ln(s->fp, c, "#   (%s)", sub);
77         color_fprintf_ln(s->fp, c, "#");
78 }
79
80 static void wt_status_print_trailer(struct wt_status *s)
81 {
82         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
83 }
84
85 static char *quote_path(const char *in, int len,
86                         struct strbuf *out, const char *prefix)
87 {
88         if (len < 0)
89                 len = strlen(in);
90
91         strbuf_grow(out, len);
92         strbuf_setlen(out, 0);
93         if (prefix) {
94                 int off = 0;
95                 while (prefix[off] && off < len && prefix[off] == in[off])
96                         if (prefix[off] == '/') {
97                                 prefix += off + 1;
98                                 in += off + 1;
99                                 len -= off + 1;
100                                 off = 0;
101                         } else
102                                 off++;
103
104                 for (; *prefix; prefix++)
105                         if (*prefix == '/')
106                                 strbuf_addstr(out, "../");
107         }
108
109         for ( ; len > 0; in++, len--) {
110                 int ch = *in;
111
112                 switch (ch) {
113                 case '\n':
114                         strbuf_addstr(out, "\\n");
115                         break;
116                 case '\r':
117                         strbuf_addstr(out, "\\r");
118                         break;
119                 default:
120                         strbuf_addch(out, ch);
121                         continue;
122                 }
123         }
124
125         if (!out->len)
126                 strbuf_addstr(out, "./");
127
128         return out->buf;
129 }
130
131 static void wt_status_print_filepair(struct wt_status *s,
132                                      int t, struct diff_filepair *p)
133 {
134         const char *c = color(t);
135         const char *one, *two;
136         struct strbuf onebuf, twobuf;
137
138         strbuf_init(&onebuf, 0);
139         strbuf_init(&twobuf, 0);
140         one = quote_path(p->one->path, -1, &onebuf, s->prefix);
141         two = quote_path(p->two->path, -1, &twobuf, s->prefix);
142
143         color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
144         switch (p->status) {
145         case DIFF_STATUS_ADDED:
146                 color_fprintf(s->fp, c, "new file:   %s", one);
147                 break;
148         case DIFF_STATUS_COPIED:
149                 color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
150                 break;
151         case DIFF_STATUS_DELETED:
152                 color_fprintf(s->fp, c, "deleted:    %s", one);
153                 break;
154         case DIFF_STATUS_MODIFIED:
155                 color_fprintf(s->fp, c, "modified:   %s", one);
156                 break;
157         case DIFF_STATUS_RENAMED:
158                 color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
159                 break;
160         case DIFF_STATUS_TYPE_CHANGED:
161                 color_fprintf(s->fp, c, "typechange: %s", one);
162                 break;
163         case DIFF_STATUS_UNKNOWN:
164                 color_fprintf(s->fp, c, "unknown:    %s", one);
165                 break;
166         case DIFF_STATUS_UNMERGED:
167                 color_fprintf(s->fp, c, "unmerged:   %s", one);
168                 break;
169         default:
170                 die("bug: unhandled diff status %c", p->status);
171         }
172         fprintf(s->fp, "\n");
173         strbuf_release(&onebuf);
174         strbuf_release(&twobuf);
175 }
176
177 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
178                 struct diff_options *options,
179                 void *data)
180 {
181         struct wt_status *s = data;
182         int shown_header = 0;
183         int i;
184         for (i = 0; i < q->nr; i++) {
185                 if (q->queue[i]->status == 'U')
186                         continue;
187                 if (!shown_header) {
188                         wt_status_print_cached_header(s);
189                         s->commitable = 1;
190                         shown_header = 1;
191                 }
192                 wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
193         }
194         if (shown_header)
195                 wt_status_print_trailer(s);
196 }
197
198 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
199                         struct diff_options *options,
200                         void *data)
201 {
202         struct wt_status *s = data;
203         int i;
204         if (q->nr) {
205                 const char *msg = use_add_msg;
206                 s->workdir_dirty = 1;
207                 for (i = 0; i < q->nr; i++)
208                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
209                                 msg = use_add_rm_msg;
210                                 break;
211                         }
212                 wt_status_print_header(s, "Changed but not updated", msg);
213         }
214         for (i = 0; i < q->nr; i++)
215                 wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
216         if (q->nr)
217                 wt_status_print_trailer(s);
218 }
219
220 static void wt_status_print_initial(struct wt_status *s)
221 {
222         int i;
223         struct strbuf buf;
224
225         strbuf_init(&buf, 0);
226         if (active_nr) {
227                 s->commitable = 1;
228                 wt_status_print_cached_header(s);
229         }
230         for (i = 0; i < active_nr; i++) {
231                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
232                 color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
233                                 quote_path(active_cache[i]->name, -1,
234                                            &buf, s->prefix));
235         }
236         if (active_nr)
237                 wt_status_print_trailer(s);
238         strbuf_release(&buf);
239 }
240
241 static void wt_status_print_updated(struct wt_status *s)
242 {
243         struct rev_info rev;
244         init_revisions(&rev, NULL);
245         setup_revisions(0, NULL, &rev, s->reference);
246         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
247         rev.diffopt.format_callback = wt_status_print_updated_cb;
248         rev.diffopt.format_callback_data = s;
249         rev.diffopt.detect_rename = 1;
250         rev.diffopt.rename_limit = 100;
251         rev.diffopt.break_opt = 0;
252         run_diff_index(&rev, 1);
253 }
254
255 static void wt_status_print_changed(struct wt_status *s)
256 {
257         struct rev_info rev;
258         init_revisions(&rev, "");
259         setup_revisions(0, NULL, &rev, NULL);
260         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
261         rev.diffopt.format_callback = wt_status_print_changed_cb;
262         rev.diffopt.format_callback_data = s;
263         run_diff_files(&rev, 0);
264 }
265
266 static void wt_status_print_untracked(struct wt_status *s)
267 {
268         struct dir_struct dir;
269         int i;
270         int shown_header = 0;
271         struct strbuf buf;
272
273         strbuf_init(&buf, 0);
274         memset(&dir, 0, sizeof(dir));
275
276         if (!s->untracked) {
277                 dir.show_other_directories = 1;
278                 dir.hide_empty_directories = 1;
279         }
280         setup_standard_excludes(&dir);
281
282         read_directory(&dir, ".", "", 0, NULL);
283         for(i = 0; i < dir.nr; i++) {
284                 /* check for matching entry, which is unmerged; lifted from
285                  * builtin-ls-files:show_other_files */
286                 struct dir_entry *ent = dir.entries[i];
287                 int pos = cache_name_pos(ent->name, ent->len);
288                 struct cache_entry *ce;
289                 if (0 <= pos)
290                         die("bug in wt_status_print_untracked");
291                 pos = -pos - 1;
292                 if (pos < active_nr) {
293                         ce = active_cache[pos];
294                         if (ce_namelen(ce) == ent->len &&
295                             !memcmp(ce->name, ent->name, ent->len))
296                                 continue;
297                 }
298                 if (!shown_header) {
299                         s->workdir_untracked = 1;
300                         wt_status_print_header(s, "Untracked files",
301                                                use_add_to_include_msg);
302                         shown_header = 1;
303                 }
304                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
305                 color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%s",
306                                 quote_path(ent->name, ent->len,
307                                         &buf, s->prefix));
308         }
309         strbuf_release(&buf);
310 }
311
312 static void wt_status_print_verbose(struct wt_status *s)
313 {
314         struct rev_info rev;
315         int saved_stdout;
316
317         fflush(s->fp);
318
319         /* Sigh, the entire diff machinery is hardcoded to output to
320          * stdout.  Do the dup-dance...*/
321         saved_stdout = dup(STDOUT_FILENO);
322         if (saved_stdout < 0 ||dup2(fileno(s->fp), STDOUT_FILENO) < 0)
323                 die("couldn't redirect stdout\n");
324
325         init_revisions(&rev, NULL);
326         setup_revisions(0, NULL, &rev, s->reference);
327         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
328         rev.diffopt.detect_rename = 1;
329         run_diff_index(&rev, 1);
330
331         fflush(stdout);
332
333         if (dup2(saved_stdout, STDOUT_FILENO) < 0)
334                 die("couldn't restore stdout\n");
335         close(saved_stdout);
336 }
337
338 void wt_status_print(struct wt_status *s)
339 {
340         unsigned char sha1[20];
341         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
342
343         if (s->branch) {
344                 const char *on_what = "On branch ";
345                 const char *branch_name = s->branch;
346                 if (!prefixcmp(branch_name, "refs/heads/"))
347                         branch_name += 11;
348                 else if (!strcmp(branch_name, "HEAD")) {
349                         branch_name = "";
350                         on_what = "Not currently on any branch.";
351                 }
352                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
353                         "# %s%s", on_what, branch_name);
354         }
355
356         if (s->is_initial) {
357                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
358                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
359                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
360                 wt_status_print_initial(s);
361         }
362         else {
363                 wt_status_print_updated(s);
364         }
365
366         wt_status_print_changed(s);
367         wt_status_print_untracked(s);
368
369         if (s->verbose && !s->is_initial)
370                 wt_status_print_verbose(s);
371         if (!s->commitable) {
372                 if (s->amend)
373                         fprintf(s->fp, "# No changes\n");
374                 else if (s->nowarn)
375                         ; /* nothing */
376                 else if (s->workdir_dirty)
377                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
378                 else if (s->workdir_untracked)
379                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
380                 else if (s->is_initial)
381                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
382                 else
383                         printf("nothing to commit (working directory clean)\n");
384         }
385 }
386
387 int git_status_config(const char *k, const char *v)
388 {
389         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
390                 wt_status_use_color = git_config_colorbool(k, v, -1);
391                 return 0;
392         }
393         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
394                 int slot = parse_status_slot(k, 13);
395                 if (!v)
396                         return config_error_nonbool(k);
397                 color_parse(v, k, wt_status_colors[slot]);
398                 return 0;
399         }
400         if (!strcmp(k, "status.relativepaths")) {
401                 wt_status_relative_paths = git_config_bool(k, v);
402                 return 0;
403         }
404         return git_color_default_config(k, v);
405 }