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 *global = NULL, *repo_config = NULL;
 163         const char *system_wide = NULL, *local;
 164
 165         local = config_exclusive_filename;
 166         if (!local) {
 167                 const char *home = getenv("HOME");
 168                 local = repo_config = git_pathdup("config");
 169                 if (home)
 170                         global = xstrdup(mkpath("%s/.gitconfig", home));
 171                 if (git_config_system())
 172                         system_wide = git_etc_gitconfig();
 173         }
 174
 175         if (use_key_regexp) {
 176                 char *tl;
 177
 178                 /*
 179                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 180                  * work for more complex patterns like "^[^.]*Foo.*bar".
 181                  * Perhaps we should deprecate this altogether someday.
 182                  */
 183
 184                 key = xstrdup(key_);
 185                 for (tl = key + strlen(key) - 1;
 186                      tl >= key && *tl != '.';
 187                      tl--)
 188                         *tl = tolower(*tl);
 189                 for (tl = key; *tl && *tl != '.'; tl++)
 190                         *tl = tolower(*tl);
 191
 192                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 193                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 194                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 195                         free(key);
 196                         goto free_strings;
 197                 }
 198         } else {
 199                 if (git_config_parse_key(key_, &key, NULL))
 200                         goto free_strings;
 201         }
 202
 203         if (regex_) {
 204                 if (regex_[0] == '!') {
 205                         do_not_match = 1;
 206                         regex_++;
 207                 }
 208
 209                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 210                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 211                         fprintf(stderr, "Invalid pattern: %s\n", regex_);
 212                         goto free_strings;
 213                 }
 214         }
 215
 216         if (do_all && system_wide)
 217                 git_config_from_file(show_config, system_wide, NULL);
 218         if (do_all && global)
 219                 git_config_from_file(show_config, global, NULL);
 220         if (do_all)
 221                 git_config_from_file(show_config, local, NULL);
 222         git_config_from_parameters(show_config, NULL);
 223         if (!do_all && !seen)
 224                 git_config_from_file(show_config, local, NULL);
 225         if (!do_all && !seen && global)
 226                 git_config_from_file(show_config, global, NULL);
 227         if (!do_all && !seen && system_wide)
 228                 git_config_from_file(show_config, system_wide, NULL);
 229
 230         free(key);
 231         if (regexp) {
 232                 regfree(regexp);
 233                 free(regexp);
 234         }
 235
 236         if (do_all)
 237                 ret = !seen;
 238         else
 239                 ret = (seen == 1) ? 0 : seen > 1 ? 2 : 1;
 240
 241 free_strings:
 242         free(repo_config);
 243         free(global);
 244         return ret;
 245 }
 246
 247 static char *normalize_value(const char *key, const char *value)
 248 {
 249         char *normalized;
 250
 251         if (!value)
 252                 return NULL;
 253
 254         if (types == 0 || types == TYPE_PATH)
 255                 /*
 256                  * We don't do normalization for TYPE_PATH here: If
 257                  * the path is like ~/foobar/, we prefer to store
 258                  * "~/foobar/" in the config file, and to expand the ~
 259                  * when retrieving the value.
 260                  */
 261                 normalized = xstrdup(value);
 262         else {
 263                 normalized = xmalloc(64);
 264                 if (types == TYPE_INT) {
 265                         int v = git_config_int(key, value);
 266                         sprintf(normalized, "%d", v);
 267                 }
 268                 else if (types == TYPE_BOOL)
 269                         sprintf(normalized, "%s",
 270                                 git_config_bool(key, value) ? "true" : "false");
 271                 else if (types == TYPE_BOOL_OR_INT) {
 272                         int is_bool, v;
 273                         v = git_config_bool_or_int(key, value, &is_bool);
 274                         if (!is_bool)
 275                                 sprintf(normalized, "%d", v);
 276                         else
 277                                 sprintf(normalized, "%s", v ? "true" : "false");
 278                 }
 279         }
 280
 281         return normalized;
 282 }
 283
 284 static int get_color_found;
 285 static const char *get_color_slot;
 286 static const char *get_colorbool_slot;
 287 static char parsed_color[COLOR_MAXLEN];
 288
 289 static int git_get_color_config(const char *var, const char *value, void *cb)
 290 {
 291         if (!strcmp(var, get_color_slot)) {
 292                 if (!value)
 293                         config_error_nonbool(var);
 294                 color_parse(value, var, parsed_color);
 295                 get_color_found = 1;
 296         }
 297         return 0;
 298 }
 299
 300 static void get_color(const char *def_color)
 301 {
 302         get_color_found = 0;
 303         parsed_color[0] = '\0';
 304         git_config(git_get_color_config, NULL);
 305
 306         if (!get_color_found && def_color)
 307                 color_parse(def_color, "command line", parsed_color);
 308
 309         fputs(parsed_color, stdout);
 310 }
 311
 312 static int get_colorbool_found;
 313 static int get_diff_color_found;
 314 static int get_color_ui_found;
 315 static int git_get_colorbool_config(const char *var, const char *value,
 316                 void *cb)
 317 {
 318         if (!strcmp(var, get_colorbool_slot))
 319                 get_colorbool_found = git_config_colorbool(var, value);
 320         else if (!strcmp(var, "diff.color"))
 321                 get_diff_color_found = git_config_colorbool(var, value);
 322         else if (!strcmp(var, "color.ui"))
 323                 get_color_ui_found = git_config_colorbool(var, value);
 324         return 0;
 325 }
 326
 327 static int get_colorbool(int print)
 328 {
 329         get_colorbool_found = -1;
 330         get_diff_color_found = -1;
 331         git_config(git_get_colorbool_config, NULL);
 332
 333         if (get_colorbool_found < 0) {
 334                 if (!strcmp(get_colorbool_slot, "color.diff"))
 335                         get_colorbool_found = get_diff_color_found;
 336                 if (get_colorbool_found < 0)
 337                         get_colorbool_found = get_color_ui_found;
 338         }
 339
 340         get_colorbool_found = want_color(get_colorbool_found);
 341
 342         if (print) {
 343                 printf("%s\n", get_colorbool_found ? "true" : "false");
 344                 return 0;
 345         } else
 346                 return get_colorbool_found ? 0 : 1;
 347 }
 348
 349 int cmd_config(int argc, const char **argv, const char *prefix)
 350 {
 351         int nongit = !startup_info->have_repository;
 352         char *value;
 353
 354         config_exclusive_filename = getenv(CONFIG_ENVIRONMENT);
 355
 356         argc = parse_options(argc, argv, prefix, builtin_config_options,
 357                              builtin_config_usage,
 358                              PARSE_OPT_STOP_AT_NON_OPTION);
 359
 360         if (use_global_config + use_system_config + use_local_config + !!given_config_file > 1) {
 361                 error("only one config file at a time.");
 362                 usage_with_options(builtin_config_usage, builtin_config_options);
 363         }
 364
 365         if (use_global_config) {
 366                 char *home = getenv("HOME");
 367                 if (home) {
 368                         char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
 369                         config_exclusive_filename = user_config;
 370                 } else {
 371                         die("$HOME not set");
 372                 }
 373         }
 374         else if (use_system_config)
 375                 config_exclusive_filename = git_etc_gitconfig();
 376         else if (use_local_config)
 377                 config_exclusive_filename = git_pathdup("config");
 378         else if (given_config_file) {
 379                 if (!is_absolute_path(given_config_file) && prefix)
 380                         config_exclusive_filename = prefix_filename(prefix,
 381                                                                     strlen(prefix),
 382                                                                     given_config_file);
 383                 else
 384                         config_exclusive_filename = given_config_file;
 385         }
 386
 387         if (end_null) {
 388                 term = '\0';
 389                 delim = '\n';
 390                 key_delim = '\n';
 391         }
 392
 393         if (HAS_MULTI_BITS(types)) {
 394                 error("only one type at a time.");
 395                 usage_with_options(builtin_config_usage, builtin_config_options);
 396         }
 397
 398         if (get_color_slot)
 399             actions |= ACTION_GET_COLOR;
 400         if (get_colorbool_slot)
 401             actions |= ACTION_GET_COLORBOOL;
 402
 403         if ((get_color_slot || get_colorbool_slot) && types) {
 404                 error("--get-color and variable type are incoherent");
 405                 usage_with_options(builtin_config_usage, builtin_config_options);
 406         }
 407
 408         if (HAS_MULTI_BITS(actions)) {
 409                 error("only one action at a time.");
 410                 usage_with_options(builtin_config_usage, builtin_config_options);
 411         }
 412         if (actions == 0)
 413                 switch (argc) {
 414                 case 1: actions = ACTION_GET; break;
 415                 case 2: actions = ACTION_SET; break;
 416                 case 3: actions = ACTION_SET_ALL; break;
 417                 default:
 418                         usage_with_options(builtin_config_usage, builtin_config_options);
 419                 }
 420
 421         if (actions == ACTION_LIST) {
 422                 check_argc(argc, 0, 0);
 423                 if (git_config(show_all_config, NULL) < 0) {
 424                         if (config_exclusive_filename)
 425                                 die_errno("unable to read config file '%s'",
 426                                           config_exclusive_filename);
 427                         else
 428                                 die("error processing config file(s)");
 429                 }
 430         }
 431         else if (actions == ACTION_EDIT) {
 432                 check_argc(argc, 0, 0);
 433                 if (!config_exclusive_filename && nongit)
 434                         die("not in a git directory");
 435                 git_config(git_default_config, NULL);
 436                 launch_editor(config_exclusive_filename ?
 437                               config_exclusive_filename : git_path("config"),
 438                               NULL, NULL);
 439         }
 440         else if (actions == ACTION_SET) {
 441                 int ret;
 442                 check_argc(argc, 2, 2);
 443                 value = normalize_value(argv[0], argv[1]);
 444                 ret = git_config_set(argv[0], value);
 445                 if (ret == CONFIG_NOTHING_SET)
 446                         error("cannot overwrite multiple values with a single value\n"
 447                         "       Use a regexp, --add or --set-all to change %s.", argv[0]);
 448                 return ret;
 449         }
 450         else if (actions == ACTION_SET_ALL) {
 451                 check_argc(argc, 2, 3);
 452                 value = normalize_value(argv[0], argv[1]);
 453                 return git_config_set_multivar(argv[0], value, argv[2], 0);
 454         }
 455         else if (actions == ACTION_ADD) {
 456                 check_argc(argc, 2, 2);
 457                 value = normalize_value(argv[0], argv[1]);
 458                 return git_config_set_multivar(argv[0], value, "^$", 0);
 459         }
 460         else if (actions == ACTION_REPLACE_ALL) {
 461                 check_argc(argc, 2, 3);
 462                 value = normalize_value(argv[0], argv[1]);
 463                 return git_config_set_multivar(argv[0], value, argv[2], 1);
 464         }
 465         else if (actions == ACTION_GET) {
 466                 check_argc(argc, 1, 2);
 467                 return get_value(argv[0], argv[1]);
 468         }
 469         else if (actions == ACTION_GET_ALL) {
 470                 do_all = 1;
 471                 check_argc(argc, 1, 2);
 472                 return get_value(argv[0], argv[1]);
 473         }
 474         else if (actions == ACTION_GET_REGEXP) {
 475                 show_keys = 1;
 476                 use_key_regexp = 1;
 477                 do_all = 1;
 478                 check_argc(argc, 1, 2);
 479                 return get_value(argv[0], argv[1]);
 480         }
 481         else if (actions == ACTION_UNSET) {
 482                 check_argc(argc, 1, 2);
 483                 if (argc == 2)
 484                         return git_config_set_multivar(argv[0], NULL, argv[1], 0);
 485                 else
 486                         return git_config_set(argv[0], NULL);
 487         }
 488         else if (actions == ACTION_UNSET_ALL) {
 489                 check_argc(argc, 1, 2);
 490                 return git_config_set_multivar(argv[0], NULL, argv[1], 1);
 491         }
 492         else if (actions == ACTION_RENAME_SECTION) {
 493                 int ret;
 494                 check_argc(argc, 2, 2);
 495                 ret = git_config_rename_section(argv[0], argv[1]);
 496                 if (ret < 0)
 497                         return ret;
 498                 if (ret == 0)
 499                         die("No such section!");
 500         }
 501         else if (actions == ACTION_REMOVE_SECTION) {
 502                 int ret;
 503                 check_argc(argc, 1, 1);
 504                 ret = git_config_rename_section(argv[0], NULL);
 505                 if (ret < 0)
 506                         return ret;
 507                 if (ret == 0)
 508                         die("No such section!");
 509         }
 510         else if (actions == ACTION_GET_COLOR) {
 511                 get_color(argv[0]);
 512         }
 513         else if (actions == ACTION_GET_COLORBOOL) {
 514                 if (argc == 1)
 515                         color_stdout_is_tty = git_config_bool("command line", argv[0]);
 516                 return get_colorbool(argc != 0);
 517         }
 518
 519         return 0;
 520 }
 521
 522 int cmd_repo_config(int argc, const char **argv, const char *prefix)
 523 {
 524         fprintf(stderr, "WARNING: git repo-config is deprecated in favor of git config.\n");
 525         return cmd_config(argc, argv, prefix);
 526 }