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         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->reference) {
  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 const char *quote_crlf(const char *in, char *buf, size_t sz)
  86 {
  87         const char *scan;
  88         char *out;
  89         const char *ret = in;
  90
  91         for (scan = in, out = buf; *scan; scan++) {
  92                 int ch = *scan;
  93                 int quoted;
  94
  95                 switch (ch) {
  96                 case '\n':
  97                         quoted = 'n';
  98                         break;
  99                 case '\r':
 100                         quoted = 'r';
 101                         break;
 102                 default:
 103                         *out++ = ch;
 104                         continue;
 105                 }
 106                 *out++ = '\\';
 107                 *out++ = quoted;
 108                 ret = buf;
 109         }
 110         *out = '\0';
 111         return ret;
 112 }
 113
 114 static void wt_status_print_filepair(struct wt_status *s,
 115                                      int t, struct diff_filepair *p)
 116 {
 117         const char *c = color(t);
 118         const char *one, *two;
 119         char onebuf[PATH_MAX], twobuf[PATH_MAX];
 120
 121         one = quote_crlf(p->one->path, onebuf, sizeof(onebuf));
 122         two = quote_crlf(p->two->path, twobuf, sizeof(twobuf));
 123
 124         color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 125         switch (p->status) {
 126         case DIFF_STATUS_ADDED:
 127                 color_fprintf(s->fp, c, "new file:   %s", one);
 128                 break;
 129         case DIFF_STATUS_COPIED:
 130                 color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
 131                 break;
 132         case DIFF_STATUS_DELETED:
 133                 color_fprintf(s->fp, c, "deleted:    %s", one);
 134                 break;
 135         case DIFF_STATUS_MODIFIED:
 136                 color_fprintf(s->fp, c, "modified:   %s", one);
 137                 break;
 138         case DIFF_STATUS_RENAMED:
 139                 color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
 140                 break;
 141         case DIFF_STATUS_TYPE_CHANGED:
 142                 color_fprintf(s->fp, c, "typechange: %s", one);
 143                 break;
 144         case DIFF_STATUS_UNKNOWN:
 145                 color_fprintf(s->fp, c, "unknown:    %s", one);
 146                 break;
 147         case DIFF_STATUS_UNMERGED:
 148                 color_fprintf(s->fp, c, "unmerged:   %s", one);
 149                 break;
 150         default:
 151                 die("bug: unhandled diff status %c", p->status);
 152         }
 153         fprintf(s->fp, "\n");
 154 }
 155
 156 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
 157                 struct diff_options *options,
 158                 void *data)
 159 {
 160         struct wt_status *s = data;
 161         int shown_header = 0;
 162         int i;
 163         for (i = 0; i < q->nr; i++) {
 164                 if (q->queue[i]->status == 'U')
 165                         continue;
 166                 if (!shown_header) {
 167                         wt_status_print_cached_header(s);
 168                         s->commitable = 1;
 169                         shown_header = 1;
 170                 }
 171                 wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
 172         }
 173         if (shown_header)
 174                 wt_status_print_trailer(s);
 175 }
 176
 177 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
 178                         struct diff_options *options,
 179                         void *data)
 180 {
 181         struct wt_status *s = data;
 182         int i;
 183         if (q->nr) {
 184                 const char *msg = use_add_msg;
 185                 s->workdir_dirty = 1;
 186                 for (i = 0; i < q->nr; i++)
 187                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
 188                                 msg = use_add_rm_msg;
 189                                 break;
 190                         }
 191                 wt_status_print_header(s, "Changed but not updated", msg);
 192         }
 193         for (i = 0; i < q->nr; i++)
 194                 wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
 195         if (q->nr)
 196                 wt_status_print_trailer(s);
 197 }
 198
 199 static void wt_read_cache(struct wt_status *s)
 200 {
 201         discard_cache();
 202         read_cache_from(s->index_file);
 203 }
 204
 205 static void wt_status_print_initial(struct wt_status *s)
 206 {
 207         int i;
 208         char buf[PATH_MAX];
 209
 210         wt_read_cache(s);
 211         if (active_nr) {
 212                 s->commitable = 1;
 213                 wt_status_print_cached_header(s);
 214         }
 215         for (i = 0; i < active_nr; i++) {
 216                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 217                 color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
 218                                 quote_crlf(active_cache[i]->name,
 219                                            buf, sizeof(buf)));
 220         }
 221         if (active_nr)
 222                 wt_status_print_trailer(s);
 223 }
 224
 225 static void wt_status_print_updated(struct wt_status *s)
 226 {
 227         struct rev_info rev;
 228         init_revisions(&rev, NULL);
 229         setup_revisions(0, NULL, &rev, s->reference);
 230         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 231         rev.diffopt.format_callback = wt_status_print_updated_cb;
 232         rev.diffopt.format_callback_data = s;
 233         rev.diffopt.detect_rename = 1;
 234         rev.diffopt.rename_limit = 100;
 235         wt_read_cache(s);
 236         run_diff_index(&rev, 1);
 237 }
 238
 239 static void wt_status_print_changed(struct wt_status *s)
 240 {
 241         struct rev_info rev;
 242         init_revisions(&rev, "");
 243         setup_revisions(0, NULL, &rev, NULL);
 244         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 245         rev.diffopt.format_callback = wt_status_print_changed_cb;
 246         rev.diffopt.format_callback_data = s;
 247         wt_read_cache(s);
 248         run_diff_files(&rev, 0);
 249 }
 250
 251 static void wt_status_print_untracked(struct wt_status *s)
 252 {
 253         struct dir_struct dir;
 254         const char *x;
 255         int i;
 256         int shown_header = 0;
 257
 258         memset(&dir, 0, sizeof(dir));
 259
 260         dir.exclude_per_dir = ".gitignore";
 261         if (!s->untracked) {
 262                 dir.show_other_directories = 1;
 263                 dir.hide_empty_directories = 1;
 264         }
 265         x = git_path("info/exclude");
 266         if (file_exists(x))
 267                 add_excludes_from_file(&dir, x);
 268         if (excludes_file && file_exists(excludes_file))
 269                 add_excludes_from_file(&dir, excludes_file);
 270
 271         read_directory(&dir, ".", "", 0, NULL);
 272         for(i = 0; i < dir.nr; i++) {
 273                 /* check for matching entry, which is unmerged; lifted from
 274                  * builtin-ls-files:show_other_files */
 275                 struct dir_entry *ent = dir.entries[i];
 276                 int pos = cache_name_pos(ent->name, ent->len);
 277                 struct cache_entry *ce;
 278                 if (0 <= pos)
 279                         die("bug in wt_status_print_untracked");
 280                 pos = -pos - 1;
 281                 if (pos < active_nr) {
 282                         ce = active_cache[pos];
 283                         if (ce_namelen(ce) == ent->len &&
 284                             !memcmp(ce->name, ent->name, ent->len))
 285                                 continue;
 286                 }
 287                 if (!shown_header) {
 288                         s->workdir_untracked = 1;
 289                         wt_status_print_header(s, "Untracked files",
 290                                                use_add_to_include_msg);
 291                         shown_header = 1;
 292                 }
 293                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 294                 color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%.*s",
 295                                 ent->len, ent->name);
 296         }
 297 }
 298
 299 static void wt_status_print_verbose(struct wt_status *s)
 300 {
 301         struct rev_info rev;
 302         init_revisions(&rev, NULL);
 303         setup_revisions(0, NULL, &rev, s->reference);
 304         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 305         rev.diffopt.detect_rename = 1;
 306         wt_read_cache(s);
 307         run_diff_index(&rev, 1);
 308 }
 309
 310 void wt_status_print(struct wt_status *s)
 311 {
 312         unsigned char sha1[20];
 313         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 314
 315         if (s->branch) {
 316                 const char *on_what = "On branch ";
 317                 const char *branch_name = s->branch;
 318                 if (!prefixcmp(branch_name, "refs/heads/"))
 319                         branch_name += 11;
 320                 else if (!strcmp(branch_name, "HEAD")) {
 321                         branch_name = "";
 322                         on_what = "Not currently on any branch.";
 323                 }
 324                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
 325                         "# %s%s", on_what, branch_name);
 326         }
 327
 328         if (s->is_initial) {
 329                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 330                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
 331                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 332                 wt_status_print_initial(s);
 333         }
 334         else {
 335                 wt_status_print_updated(s);
 336         }
 337
 338         wt_status_print_changed(s);
 339         wt_status_print_untracked(s);
 340
 341         if (s->verbose && !s->is_initial)
 342                 wt_status_print_verbose(s);
 343         if (!s->commitable) {
 344                 if (s->amend)
 345                         fprintf(s->fp, "# No changes\n");
 346                 else if (s->workdir_dirty)
 347                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
 348                 else if (s->workdir_untracked)
 349                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
 350                 else if (s->is_initial)
 351                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
 352                 else
 353                         printf("nothing to commit (working directory clean)\n");
 354         }
 355 }
 356
 357 int git_status_config(const char *k, const char *v)
 358 {
 359         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 360                 wt_status_use_color = git_config_colorbool(k, v);
 361                 return 0;
 362         }
 363         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
 364                 int slot = parse_status_slot(k, 13);
 365                 color_parse(v, k, wt_status_colors[slot]);
 366         }
 367         if (!strcmp(k, "core.excludesfile")) {
 368                 if (!v)
 369                         die("core.excludesfile without value");
 370                 excludes_file = xstrdup(v);
 371                 return 0;
 372         }
 373         return git_default_config(k, v);
 374 }