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