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