Documentation: Transplanting branch with git-rebase --onto
[git] / wt-status.c
1 #include "wt-status.h"
2 #include "color.h"
3 #include "cache.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 int parse_status_slot(const char *var, int offset)
20 {
21         if (!strcasecmp(var+offset, "header"))
22                 return WT_STATUS_HEADER;
23         if (!strcasecmp(var+offset, "updated"))
24                 return WT_STATUS_UPDATED;
25         if (!strcasecmp(var+offset, "changed"))
26                 return WT_STATUS_CHANGED;
27         if (!strcasecmp(var+offset, "untracked"))
28                 return WT_STATUS_UNTRACKED;
29         die("bad config variable '%s'", var);
30 }
31
32 static const char* color(int slot)
33 {
34         return wt_status_use_color ? wt_status_colors[slot] : "";
35 }
36
37 void wt_status_prepare(struct wt_status *s)
38 {
39         unsigned char sha1[20];
40         const char *head;
41
42         s->is_initial = get_sha1("HEAD", sha1) ? 1 : 0;
43
44         head = resolve_ref(git_path("HEAD"), sha1, 0);
45         s->branch = head ?
46                     strdup(head + strlen(get_git_dir()) + 1) :
47                     NULL;
48
49         s->reference = "HEAD";
50         s->amend = 0;
51         s->verbose = 0;
52         s->commitable = 0;
53         s->untracked = 0;
54 }
55
56 static void wt_status_print_header(const char *main, const char *sub)
57 {
58         const char *c = color(WT_STATUS_HEADER);
59         color_printf_ln(c, "# %s:", main);
60         color_printf_ln(c, "#   (%s)", sub);
61         color_printf_ln(c, "#");
62 }
63
64 static void wt_status_print_trailer(void)
65 {
66         color_printf_ln(color(WT_STATUS_HEADER), "#");
67 }
68
69 static void wt_status_print_filepair(int t, struct diff_filepair *p)
70 {
71         const char *c = color(t);
72         color_printf(color(WT_STATUS_HEADER), "#\t");
73         switch (p->status) {
74         case DIFF_STATUS_ADDED:
75                 color_printf(c, "new file: %s", p->one->path); break;
76         case DIFF_STATUS_COPIED:
77                 color_printf(c, "copied: %s -> %s",
78                                 p->one->path, p->two->path);
79                 break;
80         case DIFF_STATUS_DELETED:
81                 color_printf(c, "deleted: %s", p->one->path); break;
82         case DIFF_STATUS_MODIFIED:
83                 color_printf(c, "modified: %s", p->one->path); break;
84         case DIFF_STATUS_RENAMED:
85                 color_printf(c, "renamed: %s -> %s",
86                                 p->one->path, p->two->path);
87                 break;
88         case DIFF_STATUS_TYPE_CHANGED:
89                 color_printf(c, "typechange: %s", p->one->path); break;
90         case DIFF_STATUS_UNKNOWN:
91                 color_printf(c, "unknown: %s", p->one->path); break;
92         case DIFF_STATUS_UNMERGED:
93                 color_printf(c, "unmerged: %s", p->one->path); break;
94         default:
95                 die("bug: unhandled diff status %c", p->status);
96         }
97         printf("\n");
98 }
99
100 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
101                 struct diff_options *options,
102                 void *data)
103 {
104         struct wt_status *s = data;
105         int shown_header = 0;
106         int i;
107         if (q->nr) {
108         }
109         for (i = 0; i < q->nr; i++) {
110                 if (q->queue[i]->status == 'U')
111                         continue;
112                 if (!shown_header) {
113                         wt_status_print_header("Updated but not checked in",
114                                         "will commit");
115                         s->commitable = 1;
116                         shown_header = 1;
117                 }
118                 wt_status_print_filepair(WT_STATUS_UPDATED, q->queue[i]);
119         }
120         if (shown_header)
121                 wt_status_print_trailer();
122 }
123
124 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
125                         struct diff_options *options,
126                         void *data)
127 {
128         int i;
129         if (q->nr)
130                 wt_status_print_header("Changed but not updated",
131                                 "use git-update-index to mark for commit");
132         for (i = 0; i < q->nr; i++)
133                 wt_status_print_filepair(WT_STATUS_CHANGED, q->queue[i]);
134         if (q->nr)
135                 wt_status_print_trailer();
136 }
137
138 void wt_status_print_initial(struct wt_status *s)
139 {
140         int i;
141         read_cache();
142         if (active_nr) {
143                 s->commitable = 1;
144                 wt_status_print_header("Updated but not checked in",
145                                 "will commit");
146         }
147         for (i = 0; i < active_nr; i++) {
148                 color_printf(color(WT_STATUS_HEADER), "#\t");
149                 color_printf_ln(color(WT_STATUS_UPDATED), "new file: %s",
150                                 active_cache[i]->name);
151         }
152         if (active_nr)
153                 wt_status_print_trailer();
154 }
155
156 static void wt_status_print_updated(struct wt_status *s)
157 {
158         struct rev_info rev;
159         init_revisions(&rev, NULL);
160         setup_revisions(0, NULL, &rev, s->reference);
161         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
162         rev.diffopt.format_callback = wt_status_print_updated_cb;
163         rev.diffopt.format_callback_data = s;
164         rev.diffopt.detect_rename = 1;
165         run_diff_index(&rev, 1);
166 }
167
168 static void wt_status_print_changed(struct wt_status *s)
169 {
170         struct rev_info rev;
171         init_revisions(&rev, "");
172         setup_revisions(0, NULL, &rev, NULL);
173         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
174         rev.diffopt.format_callback = wt_status_print_changed_cb;
175         rev.diffopt.format_callback_data = s;
176         run_diff_files(&rev, 0);
177 }
178
179 static void wt_status_print_untracked(const struct wt_status *s)
180 {
181         struct dir_struct dir;
182         const char *x;
183         int i;
184         int shown_header = 0;
185
186         memset(&dir, 0, sizeof(dir));
187
188         dir.exclude_per_dir = ".gitignore";
189         if (!s->untracked) {
190                 dir.show_other_directories = 1;
191                 dir.hide_empty_directories = 1;
192         }
193         x = git_path("info/exclude");
194         if (file_exists(x))
195                 add_excludes_from_file(&dir, x);
196
197         read_directory(&dir, ".", "", 0);
198         for(i = 0; i < dir.nr; i++) {
199                 /* check for matching entry, which is unmerged; lifted from
200                  * builtin-ls-files:show_other_files */
201                 struct dir_entry *ent = dir.entries[i];
202                 int pos = cache_name_pos(ent->name, ent->len);
203                 struct cache_entry *ce;
204                 if (0 <= pos)
205                         die("bug in wt_status_print_untracked");
206                 pos = -pos - 1;
207                 if (pos < active_nr) {
208                         ce = active_cache[pos];
209                         if (ce_namelen(ce) == ent->len &&
210                             !memcmp(ce->name, ent->name, ent->len))
211                                 continue;
212                 }
213                 if (!shown_header) {
214                         wt_status_print_header("Untracked files",
215                                 "use \"git add\" to add to commit");
216                         shown_header = 1;
217                 }
218                 color_printf(color(WT_STATUS_HEADER), "#\t");
219                 color_printf_ln(color(WT_STATUS_UNTRACKED), "%.*s",
220                                 ent->len, ent->name);
221         }
222 }
223
224 static void wt_status_print_verbose(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_PATCH;
230         rev.diffopt.detect_rename = 1;
231         run_diff_index(&rev, 1);
232 }
233
234 void wt_status_print(struct wt_status *s)
235 {
236         if (s->branch && strcmp(s->branch, "refs/heads/master"))
237                 color_printf_ln(color(WT_STATUS_HEADER),
238                         "# On branch %s", s->branch);
239
240         if (s->is_initial) {
241                 color_printf_ln(color(WT_STATUS_HEADER), "#");
242                 color_printf_ln(color(WT_STATUS_HEADER), "# Initial commit");
243                 color_printf_ln(color(WT_STATUS_HEADER), "#");
244                 wt_status_print_initial(s);
245         }
246         else {
247                 wt_status_print_updated(s);
248                 discard_cache();
249         }
250
251         wt_status_print_changed(s);
252         wt_status_print_untracked(s);
253
254         if (s->verbose && !s->is_initial)
255                 wt_status_print_verbose(s);
256         if (!s->commitable)
257                 printf("%s\n", s->amend ? "# No changes" : "nothing to commit");
258 }
259
260 int git_status_config(const char *k, const char *v)
261 {
262         if (!strcmp(k, "status.color")) {
263                 wt_status_use_color = git_config_colorbool(k, v);
264                 return 0;
265         }
266         if (!strncmp(k, "status.color.", 13)) {
267                 int slot = parse_status_slot(k, 13);
268                 color_parse(v, k, wt_status_colors[slot]);
269         }
270         return git_default_config(k, v);
271 }