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 static const char *excludes_file;
  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 }
  56
  57 static void wt_status_print_cached_header(const char *reference)
  58 {
  59         const char *c = color(WT_STATUS_HEADER);
  60         color_printf_ln(c, "# Changes to be committed:");
  61         if (reference) {
  62                 color_printf_ln(c, "#   (use \"git reset %s <file>...\" to unstage)", reference);
  63         } else {
  64                 color_printf_ln(c, "#   (use \"git rm --cached <file>...\" to unstage)");
  65         }
  66         color_printf_ln(c, "#");
  67 }
  68
  69 static void wt_status_print_header(const char *main, const char *sub)
  70 {
  71         const char *c = color(WT_STATUS_HEADER);
  72         color_printf_ln(c, "# %s:", main);
  73         color_printf_ln(c, "#   (%s)", sub);
  74         color_printf_ln(c, "#");
  75 }
  76
  77 static void wt_status_print_trailer(void)
  78 {
  79         color_printf_ln(color(WT_STATUS_HEADER), "#");
  80 }
  81
  82 static const char *quote_crlf(const char *in, char *buf, size_t sz)
  83 {
  84         const char *scan;
  85         char *out;
  86         const char *ret = in;
  87
  88         for (scan = in, out = buf; *scan; scan++) {
  89                 int ch = *scan;
  90                 int quoted;
  91
  92                 switch (ch) {
  93                 case '\n':
  94                         quoted = 'n';
  95                         break;
  96                 case '\r':
  97                         quoted = 'r';
  98                         break;
  99                 default:
 100                         *out++ = ch;
 101                         continue;
 102                 }
 103                 *out++ = '\\';
 104                 *out++ = quoted;
 105                 ret = buf;
 106         }
 107         *out = '\0';
 108         return ret;
 109 }
 110
 111 static void wt_status_print_filepair(int t, struct diff_filepair *p)
 112 {
 113         const char *c = color(t);
 114         const char *one, *two;
 115         char onebuf[PATH_MAX], twobuf[PATH_MAX];
 116
 117         one = quote_crlf(p->one->path, onebuf, sizeof(onebuf));
 118         two = quote_crlf(p->two->path, twobuf, sizeof(twobuf));
 119
 120         color_printf(color(WT_STATUS_HEADER), "#\t");
 121         switch (p->status) {
 122         case DIFF_STATUS_ADDED:
 123                 color_printf(c, "new file:   %s", one);
 124                 break;
 125         case DIFF_STATUS_COPIED:
 126                 color_printf(c, "copied:     %s -> %s", one, two);
 127                 break;
 128         case DIFF_STATUS_DELETED:
 129                 color_printf(c, "deleted:    %s", one);
 130                 break;
 131         case DIFF_STATUS_MODIFIED:
 132                 color_printf(c, "modified:   %s", one);
 133                 break;
 134         case DIFF_STATUS_RENAMED:
 135                 color_printf(c, "renamed:    %s -> %s", one, two);
 136                 break;
 137         case DIFF_STATUS_TYPE_CHANGED:
 138                 color_printf(c, "typechange: %s", one);
 139                 break;
 140         case DIFF_STATUS_UNKNOWN:
 141                 color_printf(c, "unknown:    %s", one);
 142                 break;
 143         case DIFF_STATUS_UNMERGED:
 144                 color_printf(c, "unmerged:   %s", one);
 145                 break;
 146         default:
 147                 die("bug: unhandled diff status %c", p->status);
 148         }
 149         printf("\n");
 150 }
 151
 152 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
 153                 struct diff_options *options,
 154                 void *data)
 155 {
 156         struct wt_status *s = data;
 157         int shown_header = 0;
 158         int i;
 159         for (i = 0; i < q->nr; i++) {
 160                 if (q->queue[i]->status == 'U')
 161                         continue;
 162                 if (!shown_header) {
 163                         wt_status_print_cached_header(s->reference);
 164                         s->commitable = 1;
 165                         shown_header = 1;
 166                 }
 167                 wt_status_print_filepair(WT_STATUS_UPDATED, q->queue[i]);
 168         }
 169         if (shown_header)
 170                 wt_status_print_trailer();
 171 }
 172
 173 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
 174                         struct diff_options *options,
 175                         void *data)
 176 {
 177         struct wt_status *s = data;
 178         int i;
 179         if (q->nr) {
 180                 const char *msg = use_add_msg;
 181                 s->workdir_dirty = 1;
 182                 for (i = 0; i < q->nr; i++)
 183                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
 184                                 msg = use_add_rm_msg;
 185                                 break;
 186                         }
 187                 wt_status_print_header("Changed but not updated", msg);
 188         }
 189         for (i = 0; i < q->nr; i++)
 190                 wt_status_print_filepair(WT_STATUS_CHANGED, q->queue[i]);
 191         if (q->nr)
 192                 wt_status_print_trailer();
 193 }
 194
 195 static void wt_read_cache(struct wt_status *s)
 196 {
 197         discard_cache();
 198         read_cache();
 199 }
 200
 201 static void wt_status_print_initial(struct wt_status *s)
 202 {
 203         int i;
 204         char buf[PATH_MAX];
 205
 206         wt_read_cache(s);
 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         wt_read_cache(s);
 231         run_diff_index(&rev, 1);
 232 }
 233
 234 static void wt_status_print_changed(struct wt_status *s)
 235 {
 236         struct rev_info rev;
 237         init_revisions(&rev, "");
 238         setup_revisions(0, NULL, &rev, NULL);
 239         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 240         rev.diffopt.format_callback = wt_status_print_changed_cb;
 241         rev.diffopt.format_callback_data = s;
 242         wt_read_cache(s);
 243         run_diff_files(&rev, 0);
 244 }
 245
 246 static void wt_status_print_untracked(struct wt_status *s)
 247 {
 248         struct dir_struct dir;
 249         const char *x;
 250         int i;
 251         int shown_header = 0;
 252
 253         memset(&dir, 0, sizeof(dir));
 254
 255         dir.exclude_per_dir = ".gitignore";
 256         if (!s->untracked) {
 257                 dir.show_other_directories = 1;
 258                 dir.hide_empty_directories = 1;
 259         }
 260         x = git_path("info/exclude");
 261         if (file_exists(x))
 262                 add_excludes_from_file(&dir, x);
 263         if (excludes_file && file_exists(excludes_file))
 264                 add_excludes_from_file(&dir, excludes_file);
 265
 266         read_directory(&dir, ".", "", 0, NULL);
 267         for(i = 0; i < dir.nr; i++) {
 268                 /* check for matching entry, which is unmerged; lifted from
 269                  * builtin-ls-files:show_other_files */
 270                 struct dir_entry *ent = dir.entries[i];
 271                 int pos = cache_name_pos(ent->name, ent->len);
 272                 struct cache_entry *ce;
 273                 if (0 <= pos)
 274                         die("bug in wt_status_print_untracked");
 275                 pos = -pos - 1;
 276                 if (pos < active_nr) {
 277                         ce = active_cache[pos];
 278                         if (ce_namelen(ce) == ent->len &&
 279                             !memcmp(ce->name, ent->name, ent->len))
 280                                 continue;
 281                 }
 282                 if (!shown_header) {
 283                         s->workdir_untracked = 1;
 284                         wt_status_print_header("Untracked files",
 285                                                use_add_to_include_msg);
 286                         shown_header = 1;
 287                 }
 288                 color_printf(color(WT_STATUS_HEADER), "#\t");
 289                 color_printf_ln(color(WT_STATUS_UNTRACKED), "%.*s",
 290                                 ent->len, ent->name);
 291         }
 292 }
 293
 294 static void wt_status_print_verbose(struct wt_status *s)
 295 {
 296         struct rev_info rev;
 297         init_revisions(&rev, NULL);
 298         setup_revisions(0, NULL, &rev, s->reference);
 299         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 300         rev.diffopt.detect_rename = 1;
 301         wt_read_cache(s);
 302         run_diff_index(&rev, 1);
 303 }
 304
 305 void wt_status_print(struct wt_status *s)
 306 {
 307         unsigned char sha1[20];
 308         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 309
 310         if (s->branch) {
 311                 const char *on_what = "On branch ";
 312                 const char *branch_name = s->branch;
 313                 if (!prefixcmp(branch_name, "refs/heads/"))
 314                         branch_name += 11;
 315                 else if (!strcmp(branch_name, "HEAD")) {
 316                         branch_name = "";
 317                         on_what = "Not currently on any branch.";
 318                 }
 319                 color_printf_ln(color(WT_STATUS_HEADER),
 320                         "# %s%s", on_what, branch_name);
 321         }
 322
 323         if (s->is_initial) {
 324                 color_printf_ln(color(WT_STATUS_HEADER), "#");
 325                 color_printf_ln(color(WT_STATUS_HEADER), "# Initial commit");
 326                 color_printf_ln(color(WT_STATUS_HEADER), "#");
 327                 wt_status_print_initial(s);
 328         }
 329         else {
 330                 wt_status_print_updated(s);
 331         }
 332
 333         wt_status_print_changed(s);
 334         wt_status_print_untracked(s);
 335
 336         if (s->verbose && !s->is_initial)
 337                 wt_status_print_verbose(s);
 338         if (!s->commitable) {
 339                 if (s->amend)
 340                         printf("# No changes\n");
 341                 else if (s->workdir_dirty)
 342                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
 343                 else if (s->workdir_untracked)
 344                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
 345                 else if (s->is_initial)
 346                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
 347                 else
 348                         printf("nothing to commit (working directory clean)\n");
 349         }
 350 }
 351
 352 int git_status_config(const char *k, const char *v)
 353 {
 354         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 355                 wt_status_use_color = git_config_colorbool(k, v);
 356                 return 0;
 357         }
 358         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
 359                 int slot = parse_status_slot(k, 13);
 360                 color_parse(v, k, wt_status_colors[slot]);
 361         }
 362         if (!strcmp(k, "core.excludesfile")) {
 363                 if (!v)
 364                         die("core.excludesfile without value");
 365                 excludes_file = xstrdup(v);
 366                 return 0;
 367         }
 368         return git_default_config(k, v);
 369 }