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 = 0;
  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 ? 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_read_cache(struct wt_status *s)
 221 {
 222         discard_cache();
 223         read_cache_from(s->index_file);
 224 }
 225
 226 static void wt_status_print_initial(struct wt_status *s)
 227 {
 228         int i;
 229         struct strbuf buf;
 230
 231         strbuf_init(&buf, 0);
 232         wt_read_cache(s);
 233         if (active_nr) {
 234                 s->commitable = 1;
 235                 wt_status_print_cached_header(s);
 236         }
 237         for (i = 0; i < active_nr; i++) {
 238                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 239                 color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
 240                                 quote_path(active_cache[i]->name, -1,
 241                                            &buf, s->prefix));
 242         }
 243         if (active_nr)
 244                 wt_status_print_trailer(s);
 245         strbuf_release(&buf);
 246 }
 247
 248 static void wt_status_print_updated(struct wt_status *s)
 249 {
 250         struct rev_info rev;
 251         init_revisions(&rev, NULL);
 252         setup_revisions(0, NULL, &rev, s->reference);
 253         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 254         rev.diffopt.format_callback = wt_status_print_updated_cb;
 255         rev.diffopt.format_callback_data = s;
 256         rev.diffopt.detect_rename = 1;
 257         rev.diffopt.rename_limit = 100;
 258         rev.diffopt.break_opt = 0;
 259         wt_read_cache(s);
 260         run_diff_index(&rev, 1);
 261 }
 262
 263 static void wt_status_print_changed(struct wt_status *s)
 264 {
 265         struct rev_info rev;
 266         init_revisions(&rev, "");
 267         setup_revisions(0, NULL, &rev, NULL);
 268         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 269         rev.diffopt.format_callback = wt_status_print_changed_cb;
 270         rev.diffopt.format_callback_data = s;
 271         wt_read_cache(s);
 272         run_diff_files(&rev, 0);
 273 }
 274
 275 static void wt_status_print_untracked(struct wt_status *s)
 276 {
 277         struct dir_struct dir;
 278         int i;
 279         int shown_header = 0;
 280         struct strbuf buf;
 281
 282         strbuf_init(&buf, 0);
 283         memset(&dir, 0, sizeof(dir));
 284
 285         if (!s->untracked) {
 286                 dir.show_other_directories = 1;
 287                 dir.hide_empty_directories = 1;
 288         }
 289         setup_standard_excludes(&dir);
 290
 291         read_directory(&dir, ".", "", 0, NULL);
 292         for(i = 0; i < dir.nr; i++) {
 293                 /* check for matching entry, which is unmerged; lifted from
 294                  * builtin-ls-files:show_other_files */
 295                 struct dir_entry *ent = dir.entries[i];
 296                 int pos = cache_name_pos(ent->name, ent->len);
 297                 struct cache_entry *ce;
 298                 if (0 <= pos)
 299                         die("bug in wt_status_print_untracked");
 300                 pos = -pos - 1;
 301                 if (pos < active_nr) {
 302                         ce = active_cache[pos];
 303                         if (ce_namelen(ce) == ent->len &&
 304                             !memcmp(ce->name, ent->name, ent->len))
 305                                 continue;
 306                 }
 307                 if (!shown_header) {
 308                         s->workdir_untracked = 1;
 309                         wt_status_print_header(s, "Untracked files",
 310                                                use_add_to_include_msg);
 311                         shown_header = 1;
 312                 }
 313                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 314                 color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%s",
 315                                 quote_path(ent->name, ent->len,
 316                                         &buf, s->prefix));
 317         }
 318         strbuf_release(&buf);
 319 }
 320
 321 static void wt_status_print_verbose(struct wt_status *s)
 322 {
 323         struct rev_info rev;
 324         int saved_stdout;
 325
 326         fflush(s->fp);
 327
 328         /* Sigh, the entire diff machinery is hardcoded to output to
 329          * stdout.  Do the dup-dance...*/
 330         saved_stdout = dup(STDOUT_FILENO);
 331         if (saved_stdout < 0 ||dup2(fileno(s->fp), STDOUT_FILENO) < 0)
 332                 die("couldn't redirect stdout\n");
 333
 334         init_revisions(&rev, NULL);
 335         setup_revisions(0, NULL, &rev, s->reference);
 336         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 337         rev.diffopt.detect_rename = 1;
 338         wt_read_cache(s);
 339         run_diff_index(&rev, 1);
 340
 341         fflush(stdout);
 342
 343         if (dup2(saved_stdout, STDOUT_FILENO) < 0)
 344                 die("couldn't restore stdout\n");
 345         close(saved_stdout);
 346 }
 347
 348 void wt_status_print(struct wt_status *s)
 349 {
 350         unsigned char sha1[20];
 351         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 352
 353         if (s->branch) {
 354                 const char *on_what = "On branch ";
 355                 const char *branch_name = s->branch;
 356                 if (!prefixcmp(branch_name, "refs/heads/"))
 357                         branch_name += 11;
 358                 else if (!strcmp(branch_name, "HEAD")) {
 359                         branch_name = "";
 360                         on_what = "Not currently on any branch.";
 361                 }
 362                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
 363                         "# %s%s", on_what, branch_name);
 364         }
 365
 366         if (s->is_initial) {
 367                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 368                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
 369                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 370                 wt_status_print_initial(s);
 371         }
 372         else {
 373                 wt_status_print_updated(s);
 374         }
 375
 376         wt_status_print_changed(s);
 377         wt_status_print_untracked(s);
 378
 379         if (s->verbose && !s->is_initial)
 380                 wt_status_print_verbose(s);
 381         if (!s->commitable) {
 382                 if (s->amend)
 383                         fprintf(s->fp, "# No changes\n");
 384                 else if (s->nowarn)
 385                         ; /* nothing */
 386                 else if (s->workdir_dirty)
 387                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
 388                 else if (s->workdir_untracked)
 389                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
 390                 else if (s->is_initial)
 391                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
 392                 else
 393                         printf("nothing to commit (working directory clean)\n");
 394         }
 395 }
 396
 397 int git_status_config(const char *k, const char *v)
 398 {
 399         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 400                 wt_status_use_color = git_config_colorbool(k, v, -1);
 401                 return 0;
 402         }
 403         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
 404                 int slot = parse_status_slot(k, 13);
 405                 if (!v)
 406                         return config_error_nonbool(k);
 407                 color_parse(v, k, wt_status_colors[slot]);
 408                 return 0;
 409         }
 410         if (!strcmp(k, "status.relativepaths")) {
 411                 wt_status_relative_paths = git_config_bool(k, v);
 412                 return 0;
 413         }
 414         return git_default_config(k, v);
 415 }