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