builtin/config.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "color.h"
   4 #include "parse-options.h"
   5 #include "urlmatch.h"
   6 #include "quote.h"
   7
   8 static const char *const builtin_config_usage[] = {
   9         N_("git config [<options>]"),
  10         NULL
  11 };
  12
  13 static char *key;
  14 static regex_t *key_regexp;
  15 static regex_t *regexp;
  16 static int show_keys;
  17 static int omit_values;
  18 static int use_key_regexp;
  19 static int do_all;
  20 static int do_not_match;
  21 static char delim = '=';
  22 static char key_delim = ' ';
  23 static char term = '\n';
  24
  25 static int use_global_config, use_system_config, use_local_config;
  26 static struct git_config_source given_config_source;
  27 static int actions, types;
  28 static const char *get_color_slot, *get_colorbool_slot;
  29 static int end_null;
  30 static int respect_includes = -1;
  31 static int show_origin;
  32
  33 #define ACTION_GET (1<<0)
  34 #define ACTION_GET_ALL (1<<1)
  35 #define ACTION_GET_REGEXP (1<<2)
  36 #define ACTION_REPLACE_ALL (1<<3)
  37 #define ACTION_ADD (1<<4)
  38 #define ACTION_UNSET (1<<5)
  39 #define ACTION_UNSET_ALL (1<<6)
  40 #define ACTION_RENAME_SECTION (1<<7)
  41 #define ACTION_REMOVE_SECTION (1<<8)
  42 #define ACTION_LIST (1<<9)
  43 #define ACTION_EDIT (1<<10)
  44 #define ACTION_SET (1<<11)
  45 #define ACTION_SET_ALL (1<<12)
  46 #define ACTION_GET_COLOR (1<<13)
  47 #define ACTION_GET_COLORBOOL (1<<14)
  48 #define ACTION_GET_URLMATCH (1<<15)
  49
  50 #define TYPE_BOOL (1<<0)
  51 #define TYPE_INT (1<<1)
  52 #define TYPE_BOOL_OR_INT (1<<2)
  53 #define TYPE_PATH (1<<3)
  54
  55 static struct option builtin_config_options[] = {
  56         OPT_GROUP(N_("Config file location")),
  57         OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
  58         OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
  59         OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
  60         OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
  61         OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
  62         OPT_GROUP(N_("Action")),
  63         OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
  64         OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
  65         OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
  66         OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
  67         OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
  68         OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
  69         OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
  70         OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
  71         OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
  72         OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
  73         OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
  74         OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
  75         OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
  76         OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
  77         OPT_GROUP(N_("Type")),
  78         OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
  79         OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
  80         OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
  81         OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
  82         OPT_GROUP(N_("Other")),
  83         OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
  84         OPT_BOOL(0, "name-only", &omit_values, N_("show variable names only")),
  85         OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
  86         OPT_BOOL(0, "show-origin", &show_origin, N_("show origin of config (file, standard input, blob, command line)")),
  87         OPT_END(),
  88 };
  89
  90 static void check_argc(int argc, int min, int max) {
  91         if (argc >= min && argc <= max)
  92                 return;
  93         error("wrong number of arguments");
  94         usage_with_options(builtin_config_usage, builtin_config_options);
  95 }
  96
  97 static void show_config_origin(struct strbuf *buf)
  98 {
  99         const char term = end_null ? '\0' : '\t';
 100
 101         strbuf_addstr(buf, current_config_origin_type());
 102         strbuf_addch(buf, ':');
 103         if (end_null)
 104                 strbuf_addstr(buf, current_config_name());
 105         else
 106                 quote_c_style(current_config_name(), buf, NULL, 0);
 107         strbuf_addch(buf, term);
 108 }
 109
 110 static int show_all_config(const char *key_, const char *value_, void *cb)
 111 {
 112         if (show_origin) {
 113                 struct strbuf buf = STRBUF_INIT;
 114                 show_config_origin(&buf);
 115                 /* Use fwrite as "buf" can contain \0's if "end_null" is set. */
 116                 fwrite(buf.buf, 1, buf.len, stdout);
 117                 strbuf_release(&buf);
 118         }
 119         if (!omit_values && value_)
 120                 printf("%s%c%s%c", key_, delim, value_, term);
 121         else
 122                 printf("%s%c", key_, term);
 123         return 0;
 124 }
 125
 126 struct strbuf_list {
 127         struct strbuf *items;
 128         int nr;
 129         int alloc;
 130 };
 131
 132 static int format_config(struct strbuf *buf, const char *key_, const char *value_)
 133 {
 134         if (show_origin)
 135                 show_config_origin(buf);
 136         if (show_keys)
 137                 strbuf_addstr(buf, key_);
 138         if (!omit_values) {
 139                 if (show_keys)
 140                         strbuf_addch(buf, key_delim);
 141
 142                 if (types == TYPE_INT)
 143                         strbuf_addf(buf, "%"PRId64,
 144                                     git_config_int64(key_, value_ ? value_ : ""));
 145                 else if (types == TYPE_BOOL)
 146                         strbuf_addstr(buf, git_config_bool(key_, value_) ?
 147                                       "true" : "false");
 148                 else if (types == TYPE_BOOL_OR_INT) {
 149                         int is_bool, v;
 150                         v = git_config_bool_or_int(key_, value_, &is_bool);
 151                         if (is_bool)
 152                                 strbuf_addstr(buf, v ? "true" : "false");
 153                         else
 154                                 strbuf_addf(buf, "%d", v);
 155                 } else if (types == TYPE_PATH) {
 156                         const char *v;
 157                         if (git_config_pathname(&v, key_, value_) < 0)
 158                                 return -1;
 159                         strbuf_addstr(buf, v);
 160                         free((char *)v);
 161                 } else if (value_) {
 162                         strbuf_addstr(buf, value_);
 163                 } else {
 164                         /* Just show the key name; back out delimiter */
 165                         if (show_keys)
 166                                 strbuf_setlen(buf, buf->len - 1);
 167                 }
 168         }
 169         strbuf_addch(buf, term);
 170         return 0;
 171 }
 172
 173 static int collect_config(const char *key_, const char *value_, void *cb)
 174 {
 175         struct strbuf_list *values = cb;
 176
 177         if (!use_key_regexp && strcmp(key_, key))
 178                 return 0;
 179         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 180                 return 0;
 181         if (regexp != NULL &&
 182             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 183                 return 0;
 184
 185         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 186         strbuf_init(&values->items[values->nr], 0);
 187
 188         return format_config(&values->items[values->nr++], key_, value_);
 189 }
 190
 191 static int get_value(const char *key_, const char *regex_)
 192 {
 193         int ret = CONFIG_GENERIC_ERROR;
 194         struct strbuf_list values = {NULL};
 195         int i;
 196
 197         if (use_key_regexp) {
 198                 char *tl;
 199
 200                 /*
 201                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 202                  * work for more complex patterns like "^[^.]*Foo.*bar".
 203                  * Perhaps we should deprecate this altogether someday.
 204                  */
 205
 206                 key = xstrdup(key_);
 207                 for (tl = key + strlen(key) - 1;
 208                      tl >= key && *tl != '.';
 209                      tl--)
 210                         *tl = tolower(*tl);
 211                 for (tl = key; *tl && *tl != '.'; tl++)
 212                         *tl = tolower(*tl);
 213
 214                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 215                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 216                         error("invalid key pattern: %s", key_);
 217                         free(key_regexp);
 218                         key_regexp = NULL;
 219                         ret = CONFIG_INVALID_PATTERN;
 220                         goto free_strings;
 221                 }
 222         } else {
 223                 if (git_config_parse_key(key_, &key, NULL)) {
 224                         ret = CONFIG_INVALID_KEY;
 225                         goto free_strings;
 226                 }
 227         }
 228
 229         if (regex_) {
 230                 if (regex_[0] == '!') {
 231                         do_not_match = 1;
 232                         regex_++;
 233                 }
 234
 235                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 236                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 237                         error("invalid pattern: %s", regex_);
 238                         free(regexp);
 239                         regexp = NULL;
 240                         ret = CONFIG_INVALID_PATTERN;
 241                         goto free_strings;
 242                 }
 243         }
 244
 245         git_config_with_options(collect_config, &values,
 246                                 &given_config_source, respect_includes);
 247
 248         ret = !values.nr;
 249
 250         for (i = 0; i < values.nr; i++) {
 251                 struct strbuf *buf = values.items + i;
 252                 if (do_all || i == values.nr - 1)
 253                         fwrite(buf->buf, 1, buf->len, stdout);
 254                 strbuf_release(buf);
 255         }
 256         free(values.items);
 257
 258 free_strings:
 259         free(key);
 260         if (key_regexp) {
 261                 regfree(key_regexp);
 262                 free(key_regexp);
 263         }
 264         if (regexp) {
 265                 regfree(regexp);
 266                 free(regexp);
 267         }
 268
 269         return ret;
 270 }
 271
 272 static char *normalize_value(const char *key, const char *value)
 273 {
 274         if (!value)
 275                 return NULL;
 276
 277         if (types == 0 || types == TYPE_PATH)
 278                 /*
 279                  * We don't do normalization for TYPE_PATH here: If
 280                  * the path is like ~/foobar/, we prefer to store
 281                  * "~/foobar/" in the config file, and to expand the ~
 282                  * when retrieving the value.
 283                  */
 284                 return xstrdup(value);
 285         if (types == TYPE_INT)
 286                 return xstrfmt("%"PRId64, git_config_int64(key, value));
 287         if (types == TYPE_BOOL)
 288                 return xstrdup(git_config_bool(key, value) ?  "true" : "false");
 289         if (types == TYPE_BOOL_OR_INT) {
 290                 int is_bool, v;
 291                 v = git_config_bool_or_int(key, value, &is_bool);
 292                 if (!is_bool)
 293                         return xstrfmt("%d", v);
 294                 else
 295                         return xstrdup(v ? "true" : "false");
 296         }
 297
 298         die("BUG: cannot normalize type %d", types);
 299 }
 300
 301 static int get_color_found;
 302 static const char *get_color_slot;
 303 static const char *get_colorbool_slot;
 304 static char parsed_color[COLOR_MAXLEN];
 305
 306 static int git_get_color_config(const char *var, const char *value, void *cb)
 307 {
 308         if (!strcmp(var, get_color_slot)) {
 309                 if (!value)
 310                         config_error_nonbool(var);
 311                 if (color_parse(value, parsed_color) < 0)
 312                         return -1;
 313                 get_color_found = 1;
 314         }
 315         return 0;
 316 }
 317
 318 static void get_color(const char *var, const char *def_color)
 319 {
 320         get_color_slot = var;
 321         get_color_found = 0;
 322         parsed_color[0] = '\0';
 323         git_config_with_options(git_get_color_config, NULL,
 324                                 &given_config_source, respect_includes);
 325
 326         if (!get_color_found && def_color) {
 327                 if (color_parse(def_color, parsed_color) < 0)
 328                         die(_("unable to parse default color value"));
 329         }
 330
 331         fputs(parsed_color, stdout);
 332 }
 333
 334 static int get_colorbool_found;
 335 static int get_diff_color_found;
 336 static int get_color_ui_found;
 337 static int git_get_colorbool_config(const char *var, const char *value,
 338                 void *cb)
 339 {
 340         if (!strcmp(var, get_colorbool_slot))
 341                 get_colorbool_found = git_config_colorbool(var, value);
 342         else if (!strcmp(var, "diff.color"))
 343                 get_diff_color_found = git_config_colorbool(var, value);
 344         else if (!strcmp(var, "color.ui"))
 345                 get_color_ui_found = git_config_colorbool(var, value);
 346         return 0;
 347 }
 348
 349 static int get_colorbool(const char *var, int print)
 350 {
 351         get_colorbool_slot = var;
 352         get_colorbool_found = -1;
 353         get_diff_color_found = -1;
 354         get_color_ui_found = -1;
 355         git_config_with_options(git_get_colorbool_config, NULL,
 356                                 &given_config_source, respect_includes);
 357
 358         if (get_colorbool_found < 0) {
 359                 if (!strcmp(get_colorbool_slot, "color.diff"))
 360                         get_colorbool_found = get_diff_color_found;
 361                 if (get_colorbool_found < 0)
 362                         get_colorbool_found = get_color_ui_found;
 363         }
 364
 365         if (get_colorbool_found < 0)
 366                 /* default value if none found in config */
 367                 get_colorbool_found = GIT_COLOR_AUTO;
 368
 369         get_colorbool_found = want_color(get_colorbool_found);
 370
 371         if (print) {
 372                 printf("%s\n", get_colorbool_found ? "true" : "false");
 373                 return 0;
 374         } else
 375                 return get_colorbool_found ? 0 : 1;
 376 }
 377
 378 static void check_write(void)
 379 {
 380         if (!given_config_source.file && !startup_info->have_repository)
 381                 die("not in a git directory");
 382
 383         if (given_config_source.use_stdin)
 384                 die("writing to stdin is not supported");
 385
 386         if (given_config_source.blob)
 387                 die("writing config blobs is not supported");
 388 }
 389
 390 struct urlmatch_current_candidate_value {
 391         char value_is_null;
 392         struct strbuf value;
 393 };
 394
 395 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
 396 {
 397         struct string_list *values = cb;
 398         struct string_list_item *item = string_list_insert(values, var);
 399         struct urlmatch_current_candidate_value *matched = item->util;
 400
 401         if (!matched) {
 402                 matched = xmalloc(sizeof(*matched));
 403                 strbuf_init(&matched->value, 0);
 404                 item->util = matched;
 405         } else {
 406                 strbuf_reset(&matched->value);
 407         }
 408
 409         if (value) {
 410                 strbuf_addstr(&matched->value, value);
 411                 matched->value_is_null = 0;
 412         } else {
 413                 matched->value_is_null = 1;
 414         }
 415         return 0;
 416 }
 417
 418 static int get_urlmatch(const char *var, const char *url)
 419 {
 420         int ret;
 421         char *section_tail;
 422         struct string_list_item *item;
 423         struct urlmatch_config config = { STRING_LIST_INIT_DUP };
 424         struct string_list values = STRING_LIST_INIT_DUP;
 425
 426         config.collect_fn = urlmatch_collect_fn;
 427         config.cascade_fn = NULL;
 428         config.cb = &values;
 429
 430         if (!url_normalize(url, &config.url))
 431                 die("%s", config.url.err);
 432
 433         config.section = xstrdup_tolower(var);
 434         section_tail = strchr(config.section, '.');
 435         if (section_tail) {
 436                 *section_tail = '\0';
 437                 config.key = section_tail + 1;
 438                 show_keys = 0;
 439         } else {
 440                 config.key = NULL;
 441                 show_keys = 1;
 442         }
 443
 444         git_config_with_options(urlmatch_config_entry, &config,
 445                                 &given_config_source, respect_includes);
 446
 447         ret = !values.nr;
 448
 449         for_each_string_list_item(item, &values) {
 450                 struct urlmatch_current_candidate_value *matched = item->util;
 451                 struct strbuf buf = STRBUF_INIT;
 452
 453                 format_config(&buf, item->string,
 454                               matched->value_is_null ? NULL : matched->value.buf);
 455                 fwrite(buf.buf, 1, buf.len, stdout);
 456                 strbuf_release(&buf);
 457
 458                 strbuf_release(&matched->value);
 459         }
 460         string_list_clear(&config.vars, 1);
 461         string_list_clear(&values, 1);
 462         free(config.url.url);
 463
 464         free((void *)config.section);
 465         return ret;
 466 }
 467
 468 static char *default_user_config(void)
 469 {
 470         struct strbuf buf = STRBUF_INIT;
 471         strbuf_addf(&buf,
 472                     _("# This is Git's per-user configuration file.\n"
 473                       "[user]\n"
 474                       "# Please adapt and uncomment the following lines:\n"
 475                       "#        name = %s\n"
 476                       "#        email = %s\n"),
 477                     ident_default_name(),
 478                     ident_default_email());
 479         return strbuf_detach(&buf, NULL);
 480 }
 481
 482 int cmd_config(int argc, const char **argv, const char *prefix)
 483 {
 484         int nongit = !startup_info->have_repository;
 485         char *value;
 486
 487         given_config_source.file = getenv(CONFIG_ENVIRONMENT);
 488
 489         argc = parse_options(argc, argv, prefix, builtin_config_options,
 490                              builtin_config_usage,
 491                              PARSE_OPT_STOP_AT_NON_OPTION);
 492
 493         if (use_global_config + use_system_config + use_local_config +
 494             !!given_config_source.file + !!given_config_source.blob > 1) {
 495                 error("only one config file at a time.");
 496                 usage_with_options(builtin_config_usage, builtin_config_options);
 497         }
 498
 499         if (given_config_source.file &&
 500                         !strcmp(given_config_source.file, "-")) {
 501                 given_config_source.file = NULL;
 502                 given_config_source.use_stdin = 1;
 503         }
 504
 505         if (use_global_config) {
 506                 char *user_config = expand_user_path("~/.gitconfig");
 507                 char *xdg_config = xdg_config_home("config");
 508
 509                 if (!user_config)
 510                         /*
 511                          * It is unknown if HOME/.gitconfig exists, so
 512                          * we do not know if we should write to XDG
 513                          * location; error out even if XDG_CONFIG_HOME
 514                          * is set and points at a sane location.
 515                          */
 516                         die("$HOME not set");
 517
 518                 if (access_or_warn(user_config, R_OK, 0) &&
 519                     xdg_config && !access_or_warn(xdg_config, R_OK, 0))
 520                         given_config_source.file = xdg_config;
 521                 else
 522                         given_config_source.file = user_config;
 523         }
 524         else if (use_system_config)
 525                 given_config_source.file = git_etc_gitconfig();
 526         else if (use_local_config)
 527                 given_config_source.file = git_pathdup("config");
 528         else if (given_config_source.file) {
 529                 if (!is_absolute_path(given_config_source.file) && prefix)
 530                         given_config_source.file =
 531                                 xstrdup(prefix_filename(prefix,
 532                                                         strlen(prefix),
 533                                                         given_config_source.file));
 534         }
 535
 536         if (respect_includes == -1)
 537                 respect_includes = !given_config_source.file;
 538
 539         if (end_null) {
 540                 term = '\0';
 541                 delim = '\n';
 542                 key_delim = '\n';
 543         }
 544
 545         if (HAS_MULTI_BITS(types)) {
 546                 error("only one type at a time.");
 547                 usage_with_options(builtin_config_usage, builtin_config_options);
 548         }
 549
 550         if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && types) {
 551                 error("--get-color and variable type are incoherent");
 552                 usage_with_options(builtin_config_usage, builtin_config_options);
 553         }
 554
 555         if (HAS_MULTI_BITS(actions)) {
 556                 error("only one action at a time.");
 557                 usage_with_options(builtin_config_usage, builtin_config_options);
 558         }
 559         if (actions == 0)
 560                 switch (argc) {
 561                 case 1: actions = ACTION_GET; break;
 562                 case 2: actions = ACTION_SET; break;
 563                 case 3: actions = ACTION_SET_ALL; break;
 564                 default:
 565                         usage_with_options(builtin_config_usage, builtin_config_options);
 566                 }
 567         if (omit_values &&
 568             !(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
 569                 error("--name-only is only applicable to --list or --get-regexp");
 570                 usage_with_options(builtin_config_usage, builtin_config_options);
 571         }
 572
 573         if (show_origin && !(actions &
 574                 (ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
 575                 error("--show-origin is only applicable to --get, --get-all, "
 576                           "--get-regexp, and --list.");
 577                 usage_with_options(builtin_config_usage, builtin_config_options);
 578         }
 579
 580         if (actions == ACTION_LIST) {
 581                 check_argc(argc, 0, 0);
 582                 if (git_config_with_options(show_all_config, NULL,
 583                                             &given_config_source,
 584                                             respect_includes) < 0) {
 585                         if (given_config_source.file)
 586                                 die_errno("unable to read config file '%s'",
 587                                           given_config_source.file);
 588                         else
 589                                 die("error processing config file(s)");
 590                 }
 591         }
 592         else if (actions == ACTION_EDIT) {
 593                 char *config_file;
 594
 595                 check_argc(argc, 0, 0);
 596                 if (!given_config_source.file && nongit)
 597                         die("not in a git directory");
 598                 if (given_config_source.use_stdin)
 599                         die("editing stdin is not supported");
 600                 if (given_config_source.blob)
 601                         die("editing blobs is not supported");
 602                 git_config(git_default_config, NULL);
 603                 config_file = xstrdup(given_config_source.file ?
 604                                       given_config_source.file : git_path("config"));
 605                 if (use_global_config) {
 606                         int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
 607                         if (fd >= 0) {
 608                                 char *content = default_user_config();
 609                                 write_str_in_full(fd, content);
 610                                 free(content);
 611                                 close(fd);
 612                         }
 613                         else if (errno != EEXIST)
 614                                 die_errno(_("cannot create configuration file %s"), config_file);
 615                 }
 616                 launch_editor(config_file, NULL, NULL);
 617                 free(config_file);
 618         }
 619         else if (actions == ACTION_SET) {
 620                 int ret;
 621                 check_write();
 622                 check_argc(argc, 2, 2);
 623                 value = normalize_value(argv[0], argv[1]);
 624                 ret = git_config_set_in_file_gently(given_config_source.file, argv[0], value);
 625                 if (ret == CONFIG_NOTHING_SET)
 626                         error("cannot overwrite multiple values with a single value\n"
 627                         "       Use a regexp, --add or --replace-all to change %s.", argv[0]);
 628                 return ret;
 629         }
 630         else if (actions == ACTION_SET_ALL) {
 631                 check_write();
 632                 check_argc(argc, 2, 3);
 633                 value = normalize_value(argv[0], argv[1]);
 634                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 635                                                               argv[0], value, argv[2], 0);
 636         }
 637         else if (actions == ACTION_ADD) {
 638                 check_write();
 639                 check_argc(argc, 2, 2);
 640                 value = normalize_value(argv[0], argv[1]);
 641                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 642                                                               argv[0], value,
 643                                                               CONFIG_REGEX_NONE, 0);
 644         }
 645         else if (actions == ACTION_REPLACE_ALL) {
 646                 check_write();
 647                 check_argc(argc, 2, 3);
 648                 value = normalize_value(argv[0], argv[1]);
 649                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 650                                                               argv[0], value, argv[2], 1);
 651         }
 652         else if (actions == ACTION_GET) {
 653                 check_argc(argc, 1, 2);
 654                 return get_value(argv[0], argv[1]);
 655         }
 656         else if (actions == ACTION_GET_ALL) {
 657                 do_all = 1;
 658                 check_argc(argc, 1, 2);
 659                 return get_value(argv[0], argv[1]);
 660         }
 661         else if (actions == ACTION_GET_REGEXP) {
 662                 show_keys = 1;
 663                 use_key_regexp = 1;
 664                 do_all = 1;
 665                 check_argc(argc, 1, 2);
 666                 return get_value(argv[0], argv[1]);
 667         }
 668         else if (actions == ACTION_GET_URLMATCH) {
 669                 check_argc(argc, 2, 2);
 670                 return get_urlmatch(argv[0], argv[1]);
 671         }
 672         else if (actions == ACTION_UNSET) {
 673                 check_write();
 674                 check_argc(argc, 1, 2);
 675                 if (argc == 2)
 676                         return git_config_set_multivar_in_file_gently(given_config_source.file,
 677                                                                       argv[0], NULL, argv[1], 0);
 678                 else
 679                         return git_config_set_in_file_gently(given_config_source.file,
 680                                                              argv[0], NULL);
 681         }
 682         else if (actions == ACTION_UNSET_ALL) {
 683                 check_write();
 684                 check_argc(argc, 1, 2);
 685                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 686                                                               argv[0], NULL, argv[1], 1);
 687         }
 688         else if (actions == ACTION_RENAME_SECTION) {
 689                 int ret;
 690                 check_write();
 691                 check_argc(argc, 2, 2);
 692                 ret = git_config_rename_section_in_file(given_config_source.file,
 693                                                         argv[0], argv[1]);
 694                 if (ret < 0)
 695                         return ret;
 696                 if (ret == 0)
 697                         die("No such section!");
 698         }
 699         else if (actions == ACTION_REMOVE_SECTION) {
 700                 int ret;
 701                 check_write();
 702                 check_argc(argc, 1, 1);
 703                 ret = git_config_rename_section_in_file(given_config_source.file,
 704                                                         argv[0], NULL);
 705                 if (ret < 0)
 706                         return ret;
 707                 if (ret == 0)
 708                         die("No such section!");
 709         }
 710         else if (actions == ACTION_GET_COLOR) {
 711                 check_argc(argc, 1, 2);
 712                 get_color(argv[0], argv[1]);
 713         }
 714         else if (actions == ACTION_GET_COLORBOOL) {
 715                 check_argc(argc, 1, 2);
 716                 if (argc == 2)
 717                         color_stdout_is_tty = git_config_bool("command line", argv[1]);
 718                 return get_colorbool(argv[0], argc == 2);
 719         }
 720
 721         return 0;
 722 }