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         s->fp = stdout;
  55         s->index_file = get_index_file();
  56 }
  57
  58 static void wt_status_print_cached_header(struct wt_status *s)
  59 {
  60         const char *c = color(WT_STATUS_HEADER);
  61         color_fprintf_ln(s->fp, c, "# Changes to be committed:");
  62         if (s->reference) {
  63                 color_fprintf_ln(s->fp, c, "#   (use \"git reset %s <file>...\" to unstage)", s->reference);
  64         } else {
  65                 color_fprintf_ln(s->fp, c, "#   (use \"git rm --cached <file>...\" to unstage)");
  66         }
  67         color_fprintf_ln(s->fp, c, "#");
  68 }
  69
  70 static void wt_status_print_header(struct wt_status *s,
  71                                    const char *main, const char *sub)
  72 {
  73         const char *c = color(WT_STATUS_HEADER);
  74         color_fprintf_ln(s->fp, c, "# %s:", main);
  75         color_fprintf_ln(s->fp, c, "#   (%s)", sub);
  76         color_fprintf_ln(s->fp, c, "#");
  77 }
  78
  79 static void wt_status_print_trailer(struct wt_status *s)
  80 {
  81         color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
  82 }
  83
  84 static const char *quote_crlf(const char *in, char *buf, size_t sz)
  85 {
  86         const char *scan;
  87         char *out;
  88         const char *ret = in;
  89
  90         for (scan = in, out = buf; *scan; scan++) {
  91                 int ch = *scan;
  92                 int quoted;
  93
  94                 switch (ch) {
  95                 case '\n':
  96                         quoted = 'n';
  97                         break;
  98                 case '\r':
  99                         quoted = 'r';
 100                         break;
 101                 default:
 102                         *out++ = ch;
 103                         continue;
 104                 }
 105                 *out++ = '\\';
 106                 *out++ = quoted;
 107                 ret = buf;
 108         }
 109         *out = '\0';
 110         return ret;
 111 }
 112
 113 static void wt_status_print_filepair(struct wt_status *s,
 114                                      int t, struct diff_filepair *p)
 115 {
 116         const char *c = color(t);
 117         const char *one, *two;
 118         char onebuf[PATH_MAX], twobuf[PATH_MAX];
 119
 120         one = quote_crlf(p->one->path, onebuf, sizeof(onebuf));
 121         two = quote_crlf(p->two->path, twobuf, sizeof(twobuf));
 122
 123         color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 124         switch (p->status) {
 125         case DIFF_STATUS_ADDED:
 126                 color_fprintf(s->fp, c, "new file:   %s", one);
 127                 break;
 128         case DIFF_STATUS_COPIED:
 129                 color_fprintf(s->fp, c, "copied:     %s -> %s", one, two);
 130                 break;
 131         case DIFF_STATUS_DELETED:
 132                 color_fprintf(s->fp, c, "deleted:    %s", one);
 133                 break;
 134         case DIFF_STATUS_MODIFIED:
 135                 color_fprintf(s->fp, c, "modified:   %s", one);
 136                 break;
 137         case DIFF_STATUS_RENAMED:
 138                 color_fprintf(s->fp, c, "renamed:    %s -> %s", one, two);
 139                 break;
 140         case DIFF_STATUS_TYPE_CHANGED:
 141                 color_fprintf(s->fp, c, "typechange: %s", one);
 142                 break;
 143         case DIFF_STATUS_UNKNOWN:
 144                 color_fprintf(s->fp, c, "unknown:    %s", one);
 145                 break;
 146         case DIFF_STATUS_UNMERGED:
 147                 color_fprintf(s->fp, c, "unmerged:   %s", one);
 148                 break;
 149         default:
 150                 die("bug: unhandled diff status %c", p->status);
 151         }
 152         fprintf(s->fp, "\n");
 153 }
 154
 155 static void wt_status_print_updated_cb(struct diff_queue_struct *q,
 156                 struct diff_options *options,
 157                 void *data)
 158 {
 159         struct wt_status *s = data;
 160         int shown_header = 0;
 161         int i;
 162         for (i = 0; i < q->nr; i++) {
 163                 if (q->queue[i]->status == 'U')
 164                         continue;
 165                 if (!shown_header) {
 166                         wt_status_print_cached_header(s);
 167                         s->commitable = 1;
 168                         shown_header = 1;
 169                 }
 170                 wt_status_print_filepair(s, WT_STATUS_UPDATED, q->queue[i]);
 171         }
 172         if (shown_header)
 173                 wt_status_print_trailer(s);
 174 }
 175
 176 static void wt_status_print_changed_cb(struct diff_queue_struct *q,
 177                         struct diff_options *options,
 178                         void *data)
 179 {
 180         struct wt_status *s = data;
 181         int i;
 182         if (q->nr) {
 183                 const char *msg = use_add_msg;
 184                 s->workdir_dirty = 1;
 185                 for (i = 0; i < q->nr; i++)
 186                         if (q->queue[i]->status == DIFF_STATUS_DELETED) {
 187                                 msg = use_add_rm_msg;
 188                                 break;
 189                         }
 190                 wt_status_print_header(s, "Changed but not updated", msg);
 191         }
 192         for (i = 0; i < q->nr; i++)
 193                 wt_status_print_filepair(s, WT_STATUS_CHANGED, q->queue[i]);
 194         if (q->nr)
 195                 wt_status_print_trailer(s);
 196 }
 197
 198 static void wt_read_cache(struct wt_status *s)
 199 {
 200         discard_cache();
 201         read_cache_from(s->index_file);
 202 }
 203
 204 static void wt_status_print_initial(struct wt_status *s)
 205 {
 206         int i;
 207         char buf[PATH_MAX];
 208
 209         wt_read_cache(s);
 210         if (active_nr) {
 211                 s->commitable = 1;
 212                 wt_status_print_cached_header(s);
 213         }
 214         for (i = 0; i < active_nr; i++) {
 215                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 216                 color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
 217                                 quote_crlf(active_cache[i]->name,
 218                                            buf, sizeof(buf)));
 219         }
 220         if (active_nr)
 221                 wt_status_print_trailer(s);
 222 }
 223
 224 static void wt_status_print_updated(struct wt_status *s)
 225 {
 226         struct rev_info rev;
 227         init_revisions(&rev, NULL);
 228         setup_revisions(0, NULL, &rev, s->reference);
 229         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 230         rev.diffopt.format_callback = wt_status_print_updated_cb;
 231         rev.diffopt.format_callback_data = s;
 232         rev.diffopt.detect_rename = 1;
 233         rev.diffopt.rename_limit = 100;
 234         wt_read_cache(s);
 235         run_diff_index(&rev, 1);
 236 }
 237
 238 static void wt_status_print_changed(struct wt_status *s)
 239 {
 240         struct rev_info rev;
 241         init_revisions(&rev, "");
 242         setup_revisions(0, NULL, &rev, NULL);
 243         rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
 244         rev.diffopt.format_callback = wt_status_print_changed_cb;
 245         rev.diffopt.format_callback_data = s;
 246         wt_read_cache(s);
 247         run_diff_files(&rev, 0);
 248 }
 249
 250 static void wt_status_print_untracked(struct wt_status *s)
 251 {
 252         struct dir_struct dir;
 253         int i;
 254         int shown_header = 0;
 255
 256         memset(&dir, 0, sizeof(dir));
 257
 258         if (!s->untracked) {
 259                 dir.show_other_directories = 1;
 260                 dir.hide_empty_directories = 1;
 261         }
 262         setup_standard_excludes(&dir);
 263
 264         read_directory(&dir, ".", "", 0, NULL);
 265         for(i = 0; i < dir.nr; i++) {
 266                 /* check for matching entry, which is unmerged; lifted from
 267                  * builtin-ls-files:show_other_files */
 268                 struct dir_entry *ent = dir.entries[i];
 269                 int pos = cache_name_pos(ent->name, ent->len);
 270                 struct cache_entry *ce;
 271                 if (0 <= pos)
 272                         die("bug in wt_status_print_untracked");
 273                 pos = -pos - 1;
 274                 if (pos < active_nr) {
 275                         ce = active_cache[pos];
 276                         if (ce_namelen(ce) == ent->len &&
 277                             !memcmp(ce->name, ent->name, ent->len))
 278                                 continue;
 279                 }
 280                 if (!shown_header) {
 281                         s->workdir_untracked = 1;
 282                         wt_status_print_header(s, "Untracked files",
 283                                                use_add_to_include_msg);
 284                         shown_header = 1;
 285                 }
 286                 color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 287                 color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%.*s",
 288                                 ent->len, ent->name);
 289         }
 290 }
 291
 292 static void wt_status_print_verbose(struct wt_status *s)
 293 {
 294         struct rev_info rev;
 295         init_revisions(&rev, NULL);
 296         setup_revisions(0, NULL, &rev, s->reference);
 297         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 298         rev.diffopt.detect_rename = 1;
 299         wt_read_cache(s);
 300         run_diff_index(&rev, 1);
 301 }
 302
 303 void wt_status_print(struct wt_status *s)
 304 {
 305         unsigned char sha1[20];
 306         s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 307
 308         if (s->branch) {
 309                 const char *on_what = "On branch ";
 310                 const char *branch_name = s->branch;
 311                 if (!prefixcmp(branch_name, "refs/heads/"))
 312                         branch_name += 11;
 313                 else if (!strcmp(branch_name, "HEAD")) {
 314                         branch_name = "";
 315                         on_what = "Not currently on any branch.";
 316                 }
 317                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),
 318                         "# %s%s", on_what, branch_name);
 319         }
 320
 321         if (s->is_initial) {
 322                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 323                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "# Initial commit");
 324                 color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 325                 wt_status_print_initial(s);
 326         }
 327         else {
 328                 wt_status_print_updated(s);
 329         }
 330
 331         wt_status_print_changed(s);
 332         wt_status_print_untracked(s);
 333
 334         if (s->verbose && !s->is_initial)
 335                 wt_status_print_verbose(s);
 336         if (!s->commitable) {
 337                 if (s->amend)
 338                         fprintf(s->fp, "# No changes\n");
 339                 else if (s->workdir_dirty)
 340                         printf("no changes added to commit (use \"git add\" and/or \"git commit -a\")\n");
 341                 else if (s->workdir_untracked)
 342                         printf("nothing added to commit but untracked files present (use \"git add\" to track)\n");
 343                 else if (s->is_initial)
 344                         printf("nothing to commit (create/copy files and use \"git add\" to track)\n");
 345                 else
 346                         printf("nothing to commit (working directory clean)\n");
 347         }
 348 }
 349
 350 int git_status_config(const char *k, const char *v)
 351 {
 352         if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 353                 wt_status_use_color = git_config_colorbool(k, v);
 354                 return 0;
 355         }
 356         if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
 357                 int slot = parse_status_slot(k, 13);
 358                 color_parse(v, k, wt_status_colors[slot]);
 359         }
 360         return git_default_config(k, v);
 361 }