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