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 }
  55
  56 static void wt_status_print_cached_header(const char *reference)
  57 {
  58         const char *c = color(WT_STATUS_HEADER);
  59         color_printf_ln(c, "# Changes to be committed:");
  60         if (reference) {
  61                 color_printf_ln(c, "#   (use \"git reset %s <file>...\" to unstage)", reference);
  62         } else {
  63                 color_printf_ln(c, "#   (use \"git rm --cached <file>...\" to unstage)");
  64         }
  65         color_printf_ln(c, "#");
  66 }
  67
  68 static void wt_status_print_header(const char *main, const char *sub)
  69 {
  70         const char *c = color(WT_STATUS_HEADER);
  71         color_printf_ln(c, "# %s:", main);
  72         color_printf_ln(c, "#   (%s)", sub);
  73         color_printf_ln(c, "#");
  74 }
  75
  76 static void wt_status_print_trailer(void)
  77 {
  78         color_printf_ln(color(WT_STATUS_HEADER), "#");
  79 }
  80
  81 static const char *quote_crlf(const char *in, char *buf, size_t sz)
  82 {
  83         const char *scan;
  84         char *out;
  85         const char *ret = in;
  86
  87         for (scan = in, out = buf; *scan; scan++) {
  88                 int ch = *scan;
  89                 int quoted;
  90
  91                 switch (ch) {
  92                 case '\n':
  93                         quoted = 'n';
  94                         break;
  95                 case '\r':
  96                         quoted = 'r';
  97                         break;
  98                 default:
  99                         *out++ = ch;
 100                         continue;
 101                 }
 102                 *out++ = '\\';
 103                 *out++ = quoted;
 104                 ret = buf;
 105         }
 106         *out = '\0';
 107         return ret;
 108 }
 109
 110 static void wt_status_print_filepair(int t, struct diff_filepair *p)
 111 {
 112         const char *c = color(t);
 113         const char *one, *two;
 114         char onebuf[PATH_MAX], twobuf[PATH_MAX];
 115
 116         one = quote_crlf(p->one->path, onebuf, sizeof(onebuf));
 117         two = quote_crlf(p->two->path, twobuf, sizeof(twobuf));
 118
 119         color_printf(color(WT_STATUS_HEADER), "#\t");
 120         switch (p->status) {
 121         case DIFF_STATUS_ADDED:
 122                 color_printf(c, "new file:   %s", one);
 123                 break;
 124         case DIFF_STATUS_COPIED:
 125                 color_printf(c, "copied:     %s -> %s", one, two);
 126                 break;
 127         case DIFF_STATUS_DELETED:
 128                 color_printf(c, "deleted:    %s", one);
 129                 break;
 130         case DIFF_STATUS_MODIFIED:
 131                 color_printf(c, "modified:   %s", one);
 132                 break;
 133         case DIFF_STATUS_RENAMED:
 134                 color_printf(c, "renamed:    %s -> %s", one, two);
 135                 break;
 136         case DIFF_STATUS_TYPE_CHANGED:
 137                 color_printf(c, "typechange: %s", one);
 138                 break;
 139         case DIFF_STATUS_UNKNOWN:
 140                 color_printf(c, "unknown:    %s", one);
 141                 break;
 142         case DIFF_STATUS_UNMERGED:
 143                 color_printf(c, "unmerged:   %s", one);
 144                 break;
 145         default:
 146                 die("bug: unhandled diff status %c", p->status);
 147         }
 148         printf("\n");
 149 }
 150
 151 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
 152                 struct diff_options *options,
 153                 void *data)
 154 {
 155         struct wt_status *s = data;
 156         int shown_header = 0;
 157         int i;
 158         for (i = 0; i < q->nr; i++) {
 159                 if (q->queue[i]->status == 'U')
 160                         continue;
 161                 if (!shown_header) {
 162                         wt_status_print_cached_header(s->reference);
 163                         s->commitable = 1;
 164                         shown_header = 1;
 165                 }
 166                 wt_status_print_filepair(WT_STATUS_UPDATED, q->queue[i]);
 167         }
 168         if (shown_header)
 169                 wt_status_print_trailer();
 170 }
 171
 172 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
 173                         struct diff_options *options,
 174                         void *data)
 175 {
 176         struct wt_status *s = data;
 177         int i;
 178         if (q->nr) {
 179                 const char *msg = use_add_msg;
 180                 s->workdir_dirty = 1;
 181                 for (i = 0; i < q->nr; i++)
 182                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
 183                                 msg = use_add_rm_msg;
 184                                 break;
 185                         }
 186                 wt_status_print_header("Changed but not updated", msg);
 187         }
 188         for (i = 0; i < q->nr; i++)
 189                 wt_status_print_filepair(WT_STATUS_CHANGED, q->queue[i]);
 190         if (q->nr)
 191                 wt_status_print_trailer();
 192 }
 193
 194 static void wt_read_cache(struct wt_status *s)
 195 {
 196         discard_cache();
 197         read_cache();
 198 }
 199
 200 void wt_status_print_initial(struct wt_status *s)
 201 {
 202         int i;
 203         char buf[PATH_MAX];
 204
 205         wt_read_cache(s);
 206         if (active_nr) {
 207                 s->commitable = 1;
 208                 wt_status_print_cached_header(NULL);
 209         }
 210         for (i = 0; i < active_nr; i++) {
 211                 color_printf(color(WT_STATUS_HEADER), "#\t");
 212                 color_printf_ln(color(WT_STATUS_UPDATED), "new file: %s",
 213                                 quote_crlf(active_cache[i]->name,
 214                                            buf, sizeof(buf)));
 215         }
 216         if (active_nr)
 217                 wt_status_print_trailer();
 218 }
 219
 220 static void wt_status_print_updated(struct wt_status *s)
 221 {
 222         struct rev_info rev;
 223         init_revisions(&rev, NULL);
 224         setup_revisions(0, NULL, &rev, s->reference);
 225         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 226         rev.diffopt.format_callback = wt_status_print_updated_cb;
 227         rev.diffopt.format_callback_data = s;
 228         rev.diffopt.detect_rename = 1;
 229         wt_read_cache(s);
 230         run_diff_index(&rev, 1);
 231 }
 232
 233 static void wt_status_print_changed(struct wt_status *s)
 234 {
 235         struct rev_info rev;
 236         init_revisions(&rev, "");
 237         setup_revisions(0, NULL, &rev, NULL);
 238         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 239         rev.diffopt.format_callback = wt_status_print_changed_cb;
 240         rev.diffopt.format_callback_data = s;
 241         wt_read_cache(s);
 242         run_diff_files(&rev, 0);
 243 }
 244
 245 static void wt_status_print_untracked(struct wt_status *s)
 246 {
 247         struct dir_struct dir;
 248         const char *x;
 249         int i;
 250         int shown_header = 0;
 251
 252         memset(&dir, 0, sizeof(dir));
 253
 254         dir.exclude_per_dir = ".gitignore";
 255         if (!s->untracked) {
 256                 dir.show_other_directories = 1;
 257                 dir.hide_empty_directories = 1;
 258         }
 259         x = git_path("info/exclude");
 260         if (file_exists(x))
 261                 add_excludes_from_file(&dir, x);
 262
 263         read_directory(&dir, ".", "", 0);
 264         for(i = 0; i < dir.nr; i++) {
 265                 /* check for matching entry, which is unmerged; lifted from
 266                  * builtin-ls-files:show_other_files */
 267                 struct dir_entry *ent = dir.entries[i];
 268                 int pos = cache_name_pos(ent->name, ent->len);
 269                 struct cache_entry *ce;
 270                 if (0 <= pos)
 271                         die("bug in wt_status_print_untracked");
 272                 pos = -pos - 1;
 273                 if (pos < active_nr) {
 274                         ce = active_cache[pos];
 275                         if (ce_namelen(ce) == ent->len &&
 276                             !memcmp(ce->name, ent->name, ent->len))
 277                                 continue;
 278                 }
 279                 if (!shown_header) {
 280                         s->workdir_untracked = 1;
 281                         wt_status_print_header("Untracked files",
 282                                                use_add_to_include_msg);
 283                         shown_header = 1;
 284                 }
 285                 color_printf(color(WT_STATUS_HEADER), "#\t");
 286                 color_printf_ln(color(WT_STATUS_UNTRACKED), "%.*s",
 287                                 ent->len, ent->name);
 288         }
 289 }
 290
 291 static void wt_status_print_verbose(struct wt_status *s)
 292 {
 293         struct rev_info rev;
 294         init_revisions(&rev, NULL);
 295         setup_revisions(0, NULL, &rev, s->reference);
 296         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 297         rev.diffopt.detect_rename = 1;
 298         wt_read_cache(s);
 299         run_diff_index(&rev, 1);
 300 }
 301
 302 void wt_status_print(struct wt_status *s)
 303 {
 304         unsigned char sha1[20];
 305         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 306
 307         if (s->branch) {
 308                 const char *on_what = "On branch ";
 309                 const char *branch_name = s->branch;
 310                 if (!prefixcmp(branch_name, "refs/heads/"))
 311                         branch_name += 11;
 312                 else if (!strcmp(branch_name, "HEAD")) {
 313                         branch_name = "";
 314                         on_what = "Not currently on any branch.";
 315                 }
 316                 color_printf_ln(color(WT_STATUS_HEADER),
 317                         "# %s%s", on_what, branch_name);
 318         }
 319
 320         if (s->is_initial) {
 321                 color_printf_ln(color(WT_STATUS_HEADER), "#");
 322                 color_printf_ln(color(WT_STATUS_HEADER), "# Initial commit");
 323                 color_printf_ln(color(WT_STATUS_HEADER), "#");
 324                 wt_status_print_initial(s);
 325         }
 326         else {
 327                 wt_status_print_updated(s);
 328         }
 329
 330         wt_status_print_changed(s);
 331         wt_status_print_untracked(s);
 332
 333         if (s->verbose && !s->is_initial)
 334                 wt_status_print_verbose(s);
 335         if (!s->commitable) {
 336                 if (s->amend)
 337                         printf("# No changes\n");
 338                 else if (s->workdir_dirty)
 339                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
 340                 else if (s->workdir_untracked)
 341                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
 342                 else if (s->is_initial)
 343                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
 344                 else
 345                         printf("nothing to commit (working directory clean)\n");
 346         }
 347 }
 348
 349 int git_status_config(const char *k, const char *v)
 350 {
 351         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 352                 wt_status_use_color = git_config_colorbool(k, v);
 353                 return 0;
 354         }
 355         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
 356                 int slot = parse_status_slot(k, 13);
 357                 color_parse(v, k, wt_status_colors[slot]);
 358         }
 359         return git_default_config(k, v);
 360 }