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         head = resolve_ref("HEAD", sha1, 0, NULL);
  51         s->branch = head ? xstrdup(head) : NULL;
  52
  53         s->reference = "HEAD";
  54         s->amend = 0;
  55         s->verbose = 0;
  56         s->untracked = 0;
  57
  58         s->commitable = 0;
  59         s->workdir_dirty = 0;
  60         s->workdir_untracked = 0;
  61 }
  62
  63 static void wt_status_print_cached_header(const char *reference)
  64 {
  65         const char *c = color(WT_STATUS_HEADER);
  66         color_printf_ln(c, "# Changes to be committed:");
  67         if (reference) {
  68                 color_printf_ln(c, "#   (use \"git reset %s <file>...\" to unstage)", reference);
  69         } else {
  70                 color_printf_ln(c, "#   (use \"git rm --cached <file>...\" to unstage)");
  71         }
  72         color_printf_ln(c, "#");
  73 }
  74
  75 static void wt_status_print_header(const char *main, const char *sub)
  76 {
  77         const char *c = color(WT_STATUS_HEADER);
  78         color_printf_ln(c, "# %s:", main);
  79         color_printf_ln(c, "#   (%s)", sub);
  80         color_printf_ln(c, "#");
  81 }
  82
  83 static void wt_status_print_trailer(void)
  84 {
  85         color_printf_ln(color(WT_STATUS_HEADER), "#");
  86 }
  87
  88 static const char *quote_crlf(const char *in, char *buf, size_t sz)
  89 {
  90         const char *scan;
  91         char *out;
  92         const char *ret = in;
  93
  94         for (scan = in, out = buf; *scan; scan++) {
  95                 int ch = *scan;
  96                 int quoted;
  97
  98                 switch (ch) {
  99                 case '\n':
 100                         quoted = 'n';
 101                         break;
 102                 case '\r':
 103                         quoted = 'r';
 104                         break;
 105                 default:
 106                         *out++ = ch;
 107                         continue;
 108                 }
 109                 *out++ = '\\';
 110                 *out++ = quoted;
 111                 ret = buf;
 112         }
 113         *out = '\0';
 114         return ret;
 115 }
 116
 117 static void wt_status_print_filepair(int t, struct diff_filepair *p)
 118 {
 119         const char *c = color(t);
 120         const char *one, *two;
 121         char onebuf[PATH_MAX], twobuf[PATH_MAX];
 122
 123         one = quote_crlf(p->one->path, onebuf, sizeof(onebuf));
 124         two = quote_crlf(p->two->path, twobuf, sizeof(twobuf));
 125
 126         color_printf(color(WT_STATUS_HEADER), "#\t");
 127         switch (p->status) {
 128         case DIFF_STATUS_ADDED:
 129                 color_printf(c, "new file:   %s", one);
 130                 break;
 131         case DIFF_STATUS_COPIED:
 132                 color_printf(c, "copied:     %s -> %s", one, two);
 133                 break;
 134         case DIFF_STATUS_DELETED:
 135                 color_printf(c, "deleted:    %s", one);
 136                 break;
 137         case DIFF_STATUS_MODIFIED:
 138                 color_printf(c, "modified:   %s", one);
 139                 break;
 140         case DIFF_STATUS_RENAMED:
 141                 color_printf(c, "renamed:    %s -> %s", one, two);
 142                 break;
 143         case DIFF_STATUS_TYPE_CHANGED:
 144                 color_printf(c, "typechange: %s", one);
 145                 break;
 146         case DIFF_STATUS_UNKNOWN:
 147                 color_printf(c, "unknown:    %s", one);
 148                 break;
 149         case DIFF_STATUS_UNMERGED:
 150                 color_printf(c, "unmerged:   %s", one);
 151                 break;
 152         default:
 153                 die("bug: unhandled diff status %c", p->status);
 154         }
 155         printf("\n");
 156 }
 157
 158 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
 159                 struct diff_options *options,
 160                 void *data)
 161 {
 162         struct wt_status *s = data;
 163         int shown_header = 0;
 164         int i;
 165         for (i = 0; i < q->nr; i++) {
 166                 if (q->queue[i]->status == 'U')
 167                         continue;
 168                 if (!shown_header) {
 169                         wt_status_print_cached_header(s->reference);
 170                         s->commitable = 1;
 171                         shown_header = 1;
 172                 }
 173                 wt_status_print_filepair(WT_STATUS_UPDATED, q->queue[i]);
 174         }
 175         if (shown_header)
 176                 wt_status_print_trailer();
 177 }
 178
 179 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
 180                         struct diff_options *options,
 181                         void *data)
 182 {
 183         struct wt_status *s = data;
 184         int i;
 185         if (q->nr) {
 186                 const char *msg = use_add_msg;
 187                 s->workdir_dirty = 1;
 188                 for (i = 0; i < q->nr; i++)
 189                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
 190                                 msg = use_add_rm_msg;
 191                                 break;
 192                         }
 193                 wt_status_print_header("Changed but not updated", msg);
 194         }
 195         for (i = 0; i < q->nr; i++)
 196                 wt_status_print_filepair(WT_STATUS_CHANGED, q->queue[i]);
 197         if (q->nr)
 198                 wt_status_print_trailer();
 199 }
 200
 201 void wt_status_print_initial(struct wt_status *s)
 202 {
 203         int i;
 204         char buf[PATH_MAX];
 205
 206         read_cache();
 207         if (active_nr) {
 208                 s->commitable = 1;
 209                 wt_status_print_cached_header(NULL);
 210         }
 211         for (i = 0; i < active_nr; i++) {
 212                 color_printf(color(WT_STATUS_HEADER), "#\t");
 213                 color_printf_ln(color(WT_STATUS_UPDATED), "new file: %s",
 214                                 quote_crlf(active_cache[i]->name,
 215                                            buf, sizeof(buf)));
 216         }
 217         if (active_nr)
 218                 wt_status_print_trailer();
 219 }
 220
 221 static void wt_status_print_updated(struct wt_status *s)
 222 {
 223         struct rev_info rev;
 224         init_revisions(&rev, NULL);
 225         setup_revisions(0, NULL, &rev, s->reference);
 226         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 227         rev.diffopt.format_callback = wt_status_print_updated_cb;
 228         rev.diffopt.format_callback_data = s;
 229         rev.diffopt.detect_rename = 1;
 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         run_diff_files(&rev, 0);
 242 }
 243
 244 static void wt_status_print_untracked(struct wt_status *s)
 245 {
 246         struct dir_struct dir;
 247         const char *x;
 248         int i;
 249         int shown_header = 0;
 250
 251         memset(&dir, 0, sizeof(dir));
 252
 253         dir.exclude_per_dir = ".gitignore";
 254         if (!s->untracked) {
 255                 dir.show_other_directories = 1;
 256                 dir.hide_empty_directories = 1;
 257         }
 258         x = git_path("info/exclude");
 259         if (file_exists(x))
 260                 add_excludes_from_file(&dir, x);
 261
 262         read_directory(&dir, ".", "", 0);
 263         for(i = 0; i < dir.nr; i++) {
 264                 /* check for matching entry, which is unmerged; lifted from
 265                  * builtin-ls-files:show_other_files */
 266                 struct dir_entry *ent = dir.entries[i];
 267                 int pos = cache_name_pos(ent->name, ent->len);
 268                 struct cache_entry *ce;
 269                 if (0 <= pos)
 270                         die("bug in wt_status_print_untracked");
 271                 pos = -pos - 1;
 272                 if (pos < active_nr) {
 273                         ce = active_cache[pos];
 274                         if (ce_namelen(ce) == ent->len &&
 275                             !memcmp(ce->name, ent->name, ent->len))
 276                                 continue;
 277                 }
 278                 if (!shown_header) {
 279                         s->workdir_untracked = 1;
 280                         wt_status_print_header("Untracked files",
 281                                                use_add_to_include_msg);
 282                         shown_header = 1;
 283                 }
 284                 color_printf(color(WT_STATUS_HEADER), "#\t");
 285                 color_printf_ln(color(WT_STATUS_UNTRACKED), "%.*s",
 286                                 ent->len, ent->name);
 287         }
 288 }
 289
 290 static void wt_status_print_verbose(struct wt_status *s)
 291 {
 292         struct rev_info rev;
 293         init_revisions(&rev, NULL);
 294         setup_revisions(0, NULL, &rev, s->reference);
 295         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 296         rev.diffopt.detect_rename = 1;
 297         run_diff_index(&rev, 1);
 298 }
 299
 300 void wt_status_print(struct wt_status *s)
 301 {
 302         unsigned char sha1[20];
 303         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 304
 305         if (s->branch) {
 306                 const char *on_what = "On branch ";
 307                 const char *branch_name = s->branch;
 308                 if (!strncmp(branch_name, "refs/heads/", 11))
 309                         branch_name += 11;
 310                 else if (!strcmp(branch_name, "HEAD")) {
 311                         branch_name = "";
 312                         on_what = "Not currently on any branch.";
 313                 }
 314                 color_printf_ln(color(WT_STATUS_HEADER),
 315                         "# %s%s", on_what, branch_name);
 316         }
 317
 318         if (s->is_initial) {
 319                 color_printf_ln(color(WT_STATUS_HEADER), "#");
 320                 color_printf_ln(color(WT_STATUS_HEADER), "# Initial commit");
 321                 color_printf_ln(color(WT_STATUS_HEADER), "#");
 322                 wt_status_print_initial(s);
 323         }
 324         else {
 325                 wt_status_print_updated(s);
 326                 discard_cache();
 327         }
 328
 329         wt_status_print_changed(s);
 330         wt_status_print_untracked(s);
 331
 332         if (s->verbose && !s->is_initial)
 333                 wt_status_print_verbose(s);
 334         if (!s->commitable) {
 335                 if (s->amend)
 336                         printf("# No changes\n");
 337                 else if (s->workdir_dirty)
 338                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
 339                 else if (s->workdir_untracked)
 340                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
 341                 else if (s->is_initial)
 342                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
 343                 else
 344                         printf("nothing to commit (working directory clean)\n");
 345         }
 346 }
 347
 348 int git_status_config(const char *k, const char *v)
 349 {
 350         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 351                 wt_status_use_color = git_config_colorbool(k, v);
 352                 return 0;
 353         }
 354         if (!strncmp(k, "status.color.", 13) || !strncmp(k, "color.status.", 13)) {
 355                 int slot = parse_status_slot(k, 13);
 356                 color_parse(v, k, wt_status_colors[slot]);
 357         }
 358         return git_default_config(k, v);
 359 }