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
 103         if (!use_key_regexp && strcmp(key_, key))
 104                 return 0;
 105         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 106                 return 0;
 107         if (regexp != NULL &&
 108             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 109                 return 0;
 110
 111         if (show_keys) {
 112                 if (value_)
 113                         printf("%s%c", key_, key_delim);
 114                 else
 115                         printf("%s", key_);
 116         }
 117         if (seen && !do_all)
 118                 dup_error = 1;
 119         if (types == TYPE_INT)
 120                 sprintf(value, "%d", git_config_int(key_, value_?value_:""));
 121         else if (types == TYPE_BOOL)
 122                 vptr = git_config_bool(key_, value_) ? "true" : "false";
 123         else if (types == TYPE_BOOL_OR_INT) {
 124                 int is_bool, v;
 125                 v = git_config_bool_or_int(key_, value_, &is_bool);
 126                 if (is_bool)
 127                         vptr = v ? "true" : "false";
 128                 else
 129                         sprintf(value, "%d", v);
 130         } else if (types == TYPE_PATH) {
 131                 git_config_pathname(&vptr, key_, value_);
 132                 must_free_vptr = 1;
 133         }
 134         else
 135                 vptr = value_?value_:"";
 136         seen++;
 137         if (dup_error) {
 138                 error("More than one value for the key %s: %s",
 139                                 key_, vptr);
 140         }
 141         else
 142                 printf("%s%c", vptr, term);
 143         if (must_free_vptr)
 144                 /* If vptr must be freed, it's a pointer to a
 145                  * dynamically allocated buffer, it's safe to cast to
 146                  * const.
 147                 */
 148                 free((char *)vptr);
 149
 150         return 0;
 151 }
 152
 153 static int get_value(const char *key_, const char *regex_)
 154 {
 155         int ret = -1;
 156         char *tl;
 157         char *global = NULL, *repo_config = NULL;
 158         const char *system_wide = NULL, *local;
 159
 160         local = config_exclusive_filename;
 161         if (!local) {
 162                 const char *home = getenv("HOME");
 163                 local = repo_config = git_pathdup("config");
 164                 if (git_config_global() && home)
 165                         global = xstrdup(mkpath("%s/.gitconfig", home));
 166                 if (git_config_system())
 167                         system_wide = git_etc_gitconfig();
 168         }
 169
 170         key = xstrdup(key_);
 171         for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
 172                 *tl = tolower(*tl);
 173         for (tl=key; *tl && *tl != '.'; ++tl)
 174                 *tl = tolower(*tl);
 175
 176         if (use_key_regexp) {
 177                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 178                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 179                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 180                         goto free_strings;
 181                 }
 182         }
 183
 184         if (regex_) {
 185                 if (regex_[0] == '!') {
 186                         do_not_match = 1;
 187                         regex_++;
 188                 }
 189
 190                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 191                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 192                         fprintf(stderr, "Invalid pattern: %s\n", regex_);
 193                         goto free_strings;
 194                 }
 195         }
 196
 197         if (do_all && system_wide)
 198                 git_config_from_file(show_config, system_wide, NULL);
 199         if (do_all && global)
 200                 git_config_from_file(show_config, global, NULL);
 201         if (do_all)
 202                 git_config_from_file(show_config, local, NULL);
 203         git_config_from_parameters(show_config, NULL);
 204         if (!do_all && !seen)
 205                 git_config_from_file(show_config, local, NULL);
 206         if (!do_all && !seen && global)
 207                 git_config_from_file(show_config, global, NULL);
 208         if (!do_all && !seen && system_wide)
 209                 git_config_from_file(show_config, system_wide, NULL);
 210
 211         free(key);
 212         if (regexp) {
 213                 regfree(regexp);
 214                 free(regexp);
 215         }
 216
 217         if (do_all)
 218                 ret = !seen;
 219         else
 220                 ret = (seen == 1) ? 0 : seen > 1 ? 2 : 1;
 221
 222 free_strings:
 223         free(repo_config);
 224         free(global);
 225         return ret;
 226 }
 227
 228 static char *normalize_value(const char *key, const char *value)
 229 {
 230         char *normalized;
 231
 232         if (!value)
 233                 return NULL;
 234
 235         if (types == 0 || types == TYPE_PATH)
 236                 /*
 237                  * We don't do normalization for TYPE_PATH here: If
 238                  * the path is like ~/foobar/, we prefer to store
 239                  * "~/foobar/" in the config file, and to expand the ~
 240                  * when retrieving the value.
 241                  */
 242                 normalized = xstrdup(value);
 243         else {
 244                 normalized = xmalloc(64);
 245                 if (types == TYPE_INT) {
 246                         int v = git_config_int(key, value);
 247                         sprintf(normalized, "%d", v);
 248                 }
 249                 else if (types == TYPE_BOOL)
 250                         sprintf(normalized, "%s",
 251                                 git_config_bool(key, value) ? "true" : "false");
 252                 else if (types == TYPE_BOOL_OR_INT) {
 253                         int is_bool, v;
 254                         v = git_config_bool_or_int(key, value, &is_bool);
 255                         if (!is_bool)
 256                                 sprintf(normalized, "%d", v);
 257                         else
 258                                 sprintf(normalized, "%s", v ? "true" : "false");
 259                 }
 260         }
 261
 262         return normalized;
 263 }
 264
 265 static int get_color_found;
 266 static const char *get_color_slot;
 267 static const char *get_colorbool_slot;
 268 static char parsed_color[COLOR_MAXLEN];
 269
 270 static int git_get_color_config(const char *var, const char *value, void *cb)
 271 {
 272         if (!strcmp(var, get_color_slot)) {
 273                 if (!value)
 274                         config_error_nonbool(var);
 275                 color_parse(value, var, parsed_color);
 276                 get_color_found = 1;
 277         }
 278         return 0;
 279 }
 280
 281 static void get_color(const char *def_color)
 282 {
 283         get_color_found = 0;
 284         parsed_color[0] = '\0';
 285         git_config(git_get_color_config, NULL);
 286
 287         if (!get_color_found && def_color)
 288                 color_parse(def_color, "command line", parsed_color);
 289
 290         fputs(parsed_color, stdout);
 291 }
 292
 293 static int stdout_is_tty;
 294 static int get_colorbool_found;
 295 static int get_diff_color_found;
 296 static int git_get_colorbool_config(const char *var, const char *value,
 297                 void *cb)
 298 {
 299         if (!strcmp(var, get_colorbool_slot)) {
 300                 get_colorbool_found =
 301                         git_config_colorbool(var, value, stdout_is_tty);
 302         }
 303         if (!strcmp(var, "diff.color")) {
 304                 get_diff_color_found =
 305                         git_config_colorbool(var, value, stdout_is_tty);
 306         }
 307         if (!strcmp(var, "color.ui")) {
 308                 git_use_color_default = git_config_colorbool(var, value, stdout_is_tty);
 309                 return 0;
 310         }
 311         return 0;
 312 }
 313
 314 static int get_colorbool(int print)
 315 {
 316         get_colorbool_found = -1;
 317         get_diff_color_found = -1;
 318         git_config(git_get_colorbool_config, NULL);
 319
 320         if (get_colorbool_found < 0) {
 321                 if (!strcmp(get_colorbool_slot, "color.diff"))
 322                         get_colorbool_found = get_diff_color_found;
 323                 if (get_colorbool_found < 0)
 324                         get_colorbool_found = git_use_color_default;
 325         }
 326
 327         if (print) {
 328                 printf("%s\n", get_colorbool_found ? "true" : "false");
 329                 return 0;
 330         } else
 331                 return get_colorbool_found ? 0 : 1;
 332 }
 333
 334 int cmd_config(int argc, const char **argv, const char *prefix)
 335 {
 336         int nongit = !startup_info->have_repository;
 337         char *value;
 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 + use_local_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 (use_local_config)
 362                 config_exclusive_filename = git_pathdup("config");
 363         else if (given_config_file) {
 364                 if (!is_absolute_path(given_config_file) && prefix)
 365                         config_exclusive_filename = prefix_filename(prefix,
 366                                                                     strlen(prefix),
 367                                                                     given_config_file);
 368                 else
 369                         config_exclusive_filename = given_config_file;
 370         }
 371
 372         if (end_null) {
 373                 term = '\0';
 374                 delim = '\n';
 375                 key_delim = '\n';
 376         }
 377
 378         if (HAS_MULTI_BITS(types)) {
 379                 error("only one type at a time.");
 380                 usage_with_options(builtin_config_usage, builtin_config_options);
 381         }
 382
 383         if (get_color_slot)
 384             actions |= ACTION_GET_COLOR;
 385         if (get_colorbool_slot)
 386             actions |= ACTION_GET_COLORBOOL;
 387
 388         if ((get_color_slot || get_colorbool_slot) && types) {
 389                 error("--get-color and variable type are incoherent");
 390                 usage_with_options(builtin_config_usage, builtin_config_options);
 391         }
 392
 393         if (HAS_MULTI_BITS(actions)) {
 394                 error("only one action at a time.");
 395                 usage_with_options(builtin_config_usage, builtin_config_options);
 396         }
 397         if (actions == 0)
 398                 switch (argc) {
 399                 case 1: actions = ACTION_GET; break;
 400                 case 2: actions = ACTION_SET; break;
 401                 case 3: actions = ACTION_SET_ALL; break;
 402                 default:
 403                         usage_with_options(builtin_config_usage, builtin_config_options);
 404                 }
 405
 406         if (actions == ACTION_LIST) {
 407                 check_argc(argc, 0, 0);
 408                 if (git_config(show_all_config, NULL) < 0) {
 409                         if (config_exclusive_filename)
 410                                 die_errno("unable to read config file '%s'",
 411                                           config_exclusive_filename);
 412                         else
 413                                 die("error processing config file(s)");
 414                 }
 415         }
 416         else if (actions == ACTION_EDIT) {
 417                 check_argc(argc, 0, 0);
 418                 if (!config_exclusive_filename && nongit)
 419                         die("not in a git directory");
 420                 git_config(git_default_config, NULL);
 421                 launch_editor(config_exclusive_filename ?
 422                               config_exclusive_filename : git_path("config"),
 423                               NULL, NULL);
 424         }
 425         else if (actions == ACTION_SET) {
 426                 check_argc(argc, 2, 2);
 427                 value = normalize_value(argv[0], argv[1]);
 428                 return git_config_set(argv[0], value);
 429         }
 430         else if (actions == ACTION_SET_ALL) {
 431                 check_argc(argc, 2, 3);
 432                 value = normalize_value(argv[0], argv[1]);
 433                 return git_config_set_multivar(argv[0], value, argv[2], 0);
 434         }
 435         else if (actions == ACTION_ADD) {
 436                 check_argc(argc, 2, 2);
 437                 value = normalize_value(argv[0], argv[1]);
 438                 return git_config_set_multivar(argv[0], value, "^$", 0);
 439         }
 440         else if (actions == ACTION_REPLACE_ALL) {
 441                 check_argc(argc, 2, 3);
 442                 value = normalize_value(argv[0], argv[1]);
 443                 return git_config_set_multivar(argv[0], value, argv[2], 1);
 444         }
 445         else if (actions == ACTION_GET) {
 446                 check_argc(argc, 1, 2);
 447                 return get_value(argv[0], argv[1]);
 448         }
 449         else if (actions == ACTION_GET_ALL) {
 450                 do_all = 1;
 451                 check_argc(argc, 1, 2);
 452                 return get_value(argv[0], argv[1]);
 453         }
 454         else if (actions == ACTION_GET_REGEXP) {
 455                 show_keys = 1;
 456                 use_key_regexp = 1;
 457                 do_all = 1;
 458                 check_argc(argc, 1, 2);
 459                 return get_value(argv[0], argv[1]);
 460         }
 461         else if (actions == ACTION_UNSET) {
 462                 check_argc(argc, 1, 2);
 463                 if (argc == 2)
 464                         return git_config_set_multivar(argv[0], NULL, argv[1], 0);
 465                 else
 466                         return git_config_set(argv[0], NULL);
 467         }
 468         else if (actions == ACTION_UNSET_ALL) {
 469                 check_argc(argc, 1, 2);
 470                 return git_config_set_multivar(argv[0], NULL, argv[1], 1);
 471         }
 472         else if (actions == ACTION_RENAME_SECTION) {
 473                 int ret;
 474                 check_argc(argc, 2, 2);
 475                 ret = git_config_rename_section(argv[0], argv[1]);
 476                 if (ret < 0)
 477                         return ret;
 478                 if (ret == 0)
 479                         die("No such section!");
 480         }
 481         else if (actions == ACTION_REMOVE_SECTION) {
 482                 int ret;
 483                 check_argc(argc, 1, 1);
 484                 ret = git_config_rename_section(argv[0], NULL);
 485                 if (ret < 0)
 486                         return ret;
 487                 if (ret == 0)
 488                         die("No such section!");
 489         }
 490         else if (actions == ACTION_GET_COLOR) {
 491                 get_color(argv[0]);
 492         }
 493         else if (actions == ACTION_GET_COLORBOOL) {
 494                 if (argc == 1)
 495                         stdout_is_tty = git_config_bool("command line", argv[0]);
 496                 else if (argc == 0)
 497                         stdout_is_tty = isatty(1);
 498                 return get_colorbool(argc != 0);
 499         }
 500
 501         return 0;
 502 }