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