builtin/config.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "color.h"
   4 #include "parse-options.h"
   5
   6 static const char *const builtin_config_usage[] = {
   7         "git config [options]",
   8         NULL
   9 };
  10
  11 static char *key;
  12 static regex_t *key_regexp;
  13 static regex_t *regexp;
  14 static int show_keys;
  15 static int use_key_regexp;
  16 static int do_all;
  17 static int do_not_match;
  18 static int seen;
  19 static char delim = '=';
  20 static char key_delim = ' ';
  21 static char term = '\n';
  22
  23 static int use_global_config, use_system_config, use_local_config;
  24 static const char *given_config_file;
  25 static int actions, types;
  26 static const char *get_color_slot, *get_colorbool_slot;
  27 static int end_null;
  28
  29 #define ACTION_GET (1<<0)
  30 #define ACTION_GET_ALL (1<<1)
  31 #define ACTION_GET_REGEXP (1<<2)
  32 #define ACTION_REPLACE_ALL (1<<3)
  33 #define ACTION_ADD (1<<4)
  34 #define ACTION_UNSET (1<<5)
  35 #define ACTION_UNSET_ALL (1<<6)
  36 #define ACTION_RENAME_SECTION (1<<7)
  37 #define ACTION_REMOVE_SECTION (1<<8)
  38 #define ACTION_LIST (1<<9)
  39 #define ACTION_EDIT (1<<10)
  40 #define ACTION_SET (1<<11)
  41 #define ACTION_SET_ALL (1<<12)
  42 #define ACTION_GET_COLOR (1<<13)
  43 #define ACTION_GET_COLORBOOL (1<<14)
  44
  45 #define TYPE_BOOL (1<<0)
  46 #define TYPE_INT (1<<1)
  47 #define TYPE_BOOL_OR_INT (1<<2)
  48 #define TYPE_PATH (1<<3)
  49
  50 static struct option builtin_config_options[] = {
  51         OPT_GROUP("Config file location"),
  52         OPT_BOOLEAN(0, "global", &use_global_config, "use global config file"),
  53         OPT_BOOLEAN(0, "system", &use_system_config, "use system config file"),
  54         OPT_BOOLEAN(0, "local", &use_local_config, "use repository config file"),
  55         OPT_STRING('f', "file", &given_config_file, "FILE", "use given config file"),
  56         OPT_GROUP("Action"),
  57         OPT_BIT(0, "get", &actions, "get value: name [value-regex]", ACTION_GET),
  58         OPT_BIT(0, "get-all", &actions, "get all values: key [value-regex]", ACTION_GET_ALL),
  59         OPT_BIT(0, "get-regexp", &actions, "get values for regexp: name-regex [value-regex]", ACTION_GET_REGEXP),
  60         OPT_BIT(0, "replace-all", &actions, "replace all matching variables: name value [value_regex]", ACTION_REPLACE_ALL),
  61         OPT_BIT(0, "add", &actions, "adds a new variable: name value", ACTION_ADD),
  62         OPT_BIT(0, "unset", &actions, "removes a variable: name [value-regex]", ACTION_UNSET),
  63         OPT_BIT(0, "unset-all", &actions, "removes all matches: name [value-regex]", ACTION_UNSET_ALL),
  64         OPT_BIT(0, "rename-section", &actions, "rename section: old-name new-name", ACTION_RENAME_SECTION),
  65         OPT_BIT(0, "remove-section", &actions, "remove a section: name", ACTION_REMOVE_SECTION),
  66         OPT_BIT('l', "list", &actions, "list all", ACTION_LIST),
  67         OPT_BIT('e', "edit", &actions, "opens an editor", ACTION_EDIT),
  68         OPT_STRING(0, "get-color", &get_color_slot, "slot", "find the color configured: [default]"),
  69         OPT_STRING(0, "get-colorbool", &get_colorbool_slot, "slot", "find the color setting: [stdout-is-tty]"),
  70         OPT_GROUP("Type"),
  71         OPT_BIT(0, "bool", &types, "value is \"true\" or \"false\"", TYPE_BOOL),
  72         OPT_BIT(0, "int", &types, "value is decimal number", TYPE_INT),
  73         OPT_BIT(0, "bool-or-int", &types, "value is --bool or --int", TYPE_BOOL_OR_INT),
  74         OPT_BIT(0, "path", &types, "value is a path (file or directory name)", TYPE_PATH),
  75         OPT_GROUP("Other"),
  76         OPT_BOOLEAN('z', "null", &end_null, "terminate values with NUL byte"),
  77         OPT_END(),
  78 };
  79
  80 static void check_argc(int argc, int min, int max) {
  81         if (argc >= min && argc <= max)
  82                 return;
  83         error("wrong number of arguments");
  84         usage_with_options(builtin_config_usage, builtin_config_options);
  85 }
  86
  87 static int show_all_config(const char *key_, const char *value_, void *cb)
  88 {
  89         if (value_)
  90                 printf("%s%c%s%c", key_, delim, value_, term);
  91         else
  92                 printf("%s%c", key_, term);
  93         return 0;
  94 }
  95
  96 static int show_config(const char *key_, const char *value_, void *cb)
  97 {
  98         char value[256];
  99         const char *vptr = value;
 100         int must_free_vptr = 0;
 101         int dup_error = 0;
 102         int must_print_delim = 0;
 103
 104         if (!use_key_regexp && strcmp(key_, key))
 105                 return 0;
 106         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 107                 return 0;
 108         if (regexp != NULL &&
 109             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 110                 return 0;
 111
 112         if (show_keys) {
 113                 printf("%s", key_);
 114                 must_print_delim = 1;
 115         }
 116         if (seen && !do_all)
 117                 dup_error = 1;
 118         if (types == TYPE_INT)
 119                 sprintf(value, "%d", git_config_int(key_, value_?value_:""));
 120         else if (types == TYPE_BOOL)
 121                 vptr = git_config_bool(key_, value_) ? "true" : "false";
 122         else if (types == TYPE_BOOL_OR_INT) {
 123                 int is_bool, v;
 124                 v = git_config_bool_or_int(key_, value_, &is_bool);
 125                 if (is_bool)
 126                         vptr = v ? "true" : "false";
 127                 else
 128                         sprintf(value, "%d", v);
 129         } else if (types == TYPE_PATH) {
 130                 git_config_pathname(&vptr, key_, value_);
 131                 must_free_vptr = 1;
 132         } else if (value_) {
 133                 vptr = value_;
 134         } else {
 135                 /* Just show the key name */
 136                 vptr = "";
 137                 must_print_delim = 0;
 138         }
 139         seen++;
 140         if (dup_error) {
 141                 error("More than one value for the key %s: %s",
 142                                 key_, vptr);
 143         }
 144         else {
 145                 if (must_print_delim)
 146                         printf("%c", key_delim);
 147                 printf("%s%c", vptr, term);
 148         }
 149         if (must_free_vptr)
 150                 /* If vptr must be freed, it's a pointer to a
 151                  * dynamically allocated buffer, it's safe to cast to
 152                  * const.
 153                 */
 154                 free((char *)vptr);
 155
 156         return 0;
 157 }
 158
 159 static int get_value(const char *key_, const char *regex_)
 160 {
 161         int ret = -1;
 162         char *tl;
 163         char *global = NULL, *repo_config = NULL;
 164         const char *system_wide = NULL, *local;
 165
 166         local = config_exclusive_filename;
 167         if (!local) {
 168                 const char *home = getenv("HOME");
 169                 local = repo_config = git_pathdup("config");
 170                 if (git_config_global() && home)
 171                         global = xstrdup(mkpath("%s/.gitconfig", home));
 172                 if (git_config_system())
 173                         system_wide = git_etc_gitconfig();
 174         }
 175
 176         key = xstrdup(key_);
 177         for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
 178                 *tl = tolower(*tl);
 179         for (tl=key; *tl && *tl != '.'; ++tl)
 180                 *tl = tolower(*tl);
 181
 182         if (use_key_regexp) {
 183                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 184                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 185                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 186                         goto free_strings;
 187                 }
 188         }
 189
 190         if (regex_) {
 191                 if (regex_[0] == '!') {
 192                         do_not_match = 1;
 193                         regex_++;
 194                 }
 195
 196                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 197                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 198                         fprintf(stderr, "Invalid pattern: %s\n", regex_);
 199                         goto free_strings;
 200                 }
 201         }
 202
 203         if (do_all && system_wide)
 204                 git_config_from_file(show_config, system_wide, NULL);
 205         if (do_all && global)
 206                 git_config_from_file(show_config, global, NULL);
 207         if (do_all)
 208                 git_config_from_file(show_config, local, NULL);
 209         git_config_from_parameters(show_config, NULL);
 210         if (!do_all && !seen)
 211                 git_config_from_file(show_config, local, NULL);
 212         if (!do_all && !seen && global)
 213                 git_config_from_file(show_config, global, NULL);
 214         if (!do_all && !seen && system_wide)
 215                 git_config_from_file(show_config, system_wide, NULL);
 216
 217         free(key);
 218         if (regexp) {
 219                 regfree(regexp);
 220                 free(regexp);
 221         }
 222
 223         if (do_all)
 224                 ret = !seen;
 225         else
 226                 ret = (seen == 1) ? 0 : seen > 1 ? 2 : 1;
 227
 228 free_strings:
 229         free(repo_config);
 230         free(global);
 231         return ret;
 232 }
 233
 234 static char *normalize_value(const char *key, const char *value)
 235 {
 236         char *normalized;
 237
 238         if (!value)
 239                 return NULL;
 240
 241         if (types == 0 || types == TYPE_PATH)
 242                 /*
 243                  * We don't do normalization for TYPE_PATH here: If
 244                  * the path is like ~/foobar/, we prefer to store
 245                  * "~/foobar/" in the config file, and to expand the ~
 246                  * when retrieving the value.
 247                  */
 248                 normalized = xstrdup(value);
 249         else {
 250                 normalized = xmalloc(64);
 251                 if (types == TYPE_INT) {
 252                         int v = git_config_int(key, value);
 253                         sprintf(normalized, "%d", v);
 254                 }
 255                 else if (types == TYPE_BOOL)
 256                         sprintf(normalized, "%s",
 257                                 git_config_bool(key, value) ? "true" : "false");
 258                 else if (types == TYPE_BOOL_OR_INT) {
 259                         int is_bool, v;
 260                         v = git_config_bool_or_int(key, value, &is_bool);
 261                         if (!is_bool)
 262                                 sprintf(normalized, "%d", v);
 263                         else
 264                                 sprintf(normalized, "%s", v ? "true" : "false");
 265                 }
 266         }
 267
 268         return normalized;
 269 }
 270
 271 static int get_color_found;
 272 static const char *get_color_slot;
 273 static const char *get_colorbool_slot;
 274 static char parsed_color[COLOR_MAXLEN];
 275
 276 static int git_get_color_config(const char *var, const char *value, void *cb)
 277 {
 278         if (!strcmp(var, get_color_slot)) {
 279                 if (!value)
 280                         config_error_nonbool(var);
 281                 color_parse(value, var, parsed_color);
 282                 get_color_found = 1;
 283         }
 284         return 0;
 285 }
 286
 287 static void get_color(const char *def_color)
 288 {
 289         get_color_found = 0;
 290         parsed_color[0] = '\0';
 291         git_config(git_get_color_config, NULL);
 292
 293         if (!get_color_found && def_color)
 294                 color_parse(def_color, "command line", parsed_color);
 295
 296         fputs(parsed_color, stdout);
 297 }
 298
 299 static int stdout_is_tty;
 300 static int get_colorbool_found;
 301 static int get_diff_color_found;
 302 static int git_get_colorbool_config(const char *var, const char *value,
 303                 void *cb)
 304 {
 305         if (!strcmp(var, get_colorbool_slot)) {
 306                 get_colorbool_found =
 307                         git_config_colorbool(var, value, stdout_is_tty);
 308         }
 309         if (!strcmp(var, "diff.color")) {
 310                 get_diff_color_found =
 311                         git_config_colorbool(var, value, stdout_is_tty);
 312         }
 313         if (!strcmp(var, "color.ui")) {
 314                 git_use_color_default = git_config_colorbool(var, value, stdout_is_tty);
 315                 return 0;
 316         }
 317         return 0;
 318 }
 319
 320 static int get_colorbool(int print)
 321 {
 322         get_colorbool_found = -1;
 323         get_diff_color_found = -1;
 324         git_config(git_get_colorbool_config, NULL);
 325
 326         if (get_colorbool_found < 0) {
 327                 if (!strcmp(get_colorbool_slot, "color.diff"))
 328                         get_colorbool_found = get_diff_color_found;
 329                 if (get_colorbool_found < 0)
 330                         get_colorbool_found = git_use_color_default;
 331         }
 332
 333         if (print) {
 334                 printf("%s\n", get_colorbool_found ? "true" : "false");
 335                 return 0;
 336         } else
 337                 return get_colorbool_found ? 0 : 1;
 338 }
 339
 340 int cmd_config(int argc, const char **argv, const char *prefix)
 341 {
 342         int nongit = !startup_info->have_repository;
 343         char *value;
 344
 345         config_exclusive_filename = getenv(CONFIG_ENVIRONMENT);
 346
 347         argc = parse_options(argc, argv, prefix, builtin_config_options,
 348                              builtin_config_usage,
 349                              PARSE_OPT_STOP_AT_NON_OPTION);
 350
 351         if (use_global_config + use_system_config + use_local_config + !!given_config_file > 1) {
 352                 error("only one config file at a time.");
 353                 usage_with_options(builtin_config_usage, builtin_config_options);
 354         }
 355
 356         if (use_global_config) {
 357                 char *home = getenv("HOME");
 358                 if (home) {
 359                         char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
 360                         config_exclusive_filename = user_config;
 361                 } else {
 362                         die("$HOME not set");
 363                 }
 364         }
 365         else if (use_system_config)
 366                 config_exclusive_filename = git_etc_gitconfig();
 367         else if (use_local_config)
 368                 config_exclusive_filename = git_pathdup("config");
 369         else if (given_config_file) {
 370                 if (!is_absolute_path(given_config_file) && prefix)
 371                         config_exclusive_filename = prefix_filename(prefix,
 372                                                                     strlen(prefix),
 373                                                                     given_config_file);
 374                 else
 375                         config_exclusive_filename = given_config_file;
 376         }
 377
 378         if (end_null) {
 379                 term = '\0';
 380                 delim = '\n';
 381                 key_delim = '\n';
 382         }
 383
 384         if (HAS_MULTI_BITS(types)) {
 385                 error("only one type at a time.");
 386                 usage_with_options(builtin_config_usage, builtin_config_options);
 387         }
 388
 389         if (get_color_slot)
 390             actions |= ACTION_GET_COLOR;
 391         if (get_colorbool_slot)
 392             actions |= ACTION_GET_COLORBOOL;
 393
 394         if ((get_color_slot || get_colorbool_slot) && types) {
 395                 error("--get-color and variable type are incoherent");
 396                 usage_with_options(builtin_config_usage, builtin_config_options);
 397         }
 398
 399         if (HAS_MULTI_BITS(actions)) {
 400                 error("only one action at a time.");
 401                 usage_with_options(builtin_config_usage, builtin_config_options);
 402         }
 403         if (actions == 0)
 404                 switch (argc) {
 405                 case 1: actions = ACTION_GET; break;
 406                 case 2: actions = ACTION_SET; break;
 407                 case 3: actions = ACTION_SET_ALL; break;
 408                 default:
 409                         usage_with_options(builtin_config_usage, builtin_config_options);
 410                 }
 411
 412         if (actions == ACTION_LIST) {
 413                 check_argc(argc, 0, 0);
 414                 if (git_config(show_all_config, NULL) < 0) {
 415                         if (config_exclusive_filename)
 416                                 die_errno("unable to read config file '%s'",
 417                                           config_exclusive_filename);
 418                         else
 419                                 die("error processing config file(s)");
 420                 }
 421         }
 422         else if (actions == ACTION_EDIT) {
 423                 check_argc(argc, 0, 0);
 424                 if (!config_exclusive_filename && nongit)
 425                         die("not in a git directory");
 426                 git_config(git_default_config, NULL);
 427                 launch_editor(config_exclusive_filename ?
 428                               config_exclusive_filename : git_path("config"),
 429                               NULL, NULL);
 430         }
 431         else if (actions == ACTION_SET) {
 432                 check_argc(argc, 2, 2);
 433                 value = normalize_value(argv[0], argv[1]);
 434                 return git_config_set(argv[0], value);
 435         }
 436         else if (actions == ACTION_SET_ALL) {
 437                 check_argc(argc, 2, 3);
 438                 value = normalize_value(argv[0], argv[1]);
 439                 return git_config_set_multivar(argv[0], value, argv[2], 0);
 440         }
 441         else if (actions == ACTION_ADD) {
 442                 check_argc(argc, 2, 2);
 443                 value = normalize_value(argv[0], argv[1]);
 444                 return git_config_set_multivar(argv[0], value, "^$", 0);
 445         }
 446         else if (actions == ACTION_REPLACE_ALL) {
 447                 check_argc(argc, 2, 3);
 448                 value = normalize_value(argv[0], argv[1]);
 449                 return git_config_set_multivar(argv[0], value, argv[2], 1);
 450         }
 451         else if (actions == ACTION_GET) {
 452                 check_argc(argc, 1, 2);
 453                 return get_value(argv[0], argv[1]);
 454         }
 455         else if (actions == ACTION_GET_ALL) {
 456                 do_all = 1;
 457                 check_argc(argc, 1, 2);
 458                 return get_value(argv[0], argv[1]);
 459         }
 460         else if (actions == ACTION_GET_REGEXP) {
 461                 show_keys = 1;
 462                 use_key_regexp = 1;
 463                 do_all = 1;
 464                 check_argc(argc, 1, 2);
 465                 return get_value(argv[0], argv[1]);
 466         }
 467         else if (actions == ACTION_UNSET) {
 468                 check_argc(argc, 1, 2);
 469                 if (argc == 2)
 470                         return git_config_set_multivar(argv[0], NULL, argv[1], 0);
 471                 else
 472                         return git_config_set(argv[0], NULL);
 473         }
 474         else if (actions == ACTION_UNSET_ALL) {
 475                 check_argc(argc, 1, 2);
 476                 return git_config_set_multivar(argv[0], NULL, argv[1], 1);
 477         }
 478         else if (actions == ACTION_RENAME_SECTION) {
 479                 int ret;
 480                 check_argc(argc, 2, 2);
 481                 ret = git_config_rename_section(argv[0], argv[1]);
 482                 if (ret < 0)
 483                         return ret;
 484                 if (ret == 0)
 485                         die("No such section!");
 486         }
 487         else if (actions == ACTION_REMOVE_SECTION) {
 488                 int ret;
 489                 check_argc(argc, 1, 1);
 490                 ret = git_config_rename_section(argv[0], NULL);
 491                 if (ret < 0)
 492                         return ret;
 493                 if (ret == 0)
 494                         die("No such section!");
 495         }
 496         else if (actions == ACTION_GET_COLOR) {
 497                 get_color(argv[0]);
 498         }
 499         else if (actions == ACTION_GET_COLORBOOL) {
 500                 if (argc == 1)
 501                         stdout_is_tty = git_config_bool("command line", argv[0]);
 502                 else if (argc == 0)
 503                         stdout_is_tty = isatty(1);
 504                 return get_colorbool(argc != 0);
 505         }
 506
 507         return 0;
 508 }