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