builtin/config.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "config.h"
   4 #include "color.h"
   5 #include "parse-options.h"
   6 #include "urlmatch.h"
   7 #include "quote.h"
   8
   9 static const char *const builtin_config_usage[] = {
  10         N_("git config [<options>]"),
  11         NULL
  12 };
  13
  14 static char *key;
  15 static regex_t *key_regexp;
  16 static regex_t *regexp;
  17 static int show_keys;
  18 static int omit_values;
  19 static int use_key_regexp;
  20 static int do_all;
  21 static int do_not_match;
  22 static char delim = '=';
  23 static char key_delim = ' ';
  24 static char term = '\n';
  25
  26 static int use_global_config, use_system_config, use_local_config;
  27 static struct git_config_source given_config_source;
  28 static int actions, types;
  29 static int end_null;
  30 static int respect_includes_opt = -1;
  31 static struct config_options config_options;
  32 static int show_origin;
  33
  34 #define ACTION_GET (1<<0)
  35 #define ACTION_GET_ALL (1<<1)
  36 #define ACTION_GET_REGEXP (1<<2)
  37 #define ACTION_REPLACE_ALL (1<<3)
  38 #define ACTION_ADD (1<<4)
  39 #define ACTION_UNSET (1<<5)
  40 #define ACTION_UNSET_ALL (1<<6)
  41 #define ACTION_RENAME_SECTION (1<<7)
  42 #define ACTION_REMOVE_SECTION (1<<8)
  43 #define ACTION_LIST (1<<9)
  44 #define ACTION_EDIT (1<<10)
  45 #define ACTION_SET (1<<11)
  46 #define ACTION_SET_ALL (1<<12)
  47 #define ACTION_GET_COLOR (1<<13)
  48 #define ACTION_GET_COLORBOOL (1<<14)
  49 #define ACTION_GET_URLMATCH (1<<15)
  50
  51 #define TYPE_BOOL (1<<0)
  52 #define TYPE_INT (1<<1)
  53 #define TYPE_BOOL_OR_INT (1<<2)
  54 #define TYPE_PATH (1<<3)
  55 #define TYPE_EXPIRY_DATE (1<<4)
  56
  57 static struct option builtin_config_options[] = {
  58         OPT_GROUP(N_("Config file location")),
  59         OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
  60         OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
  61         OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
  62         OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
  63         OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
  64         OPT_GROUP(N_("Action")),
  65         OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
  66         OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
  67         OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
  68         OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
  69         OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
  70         OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
  71         OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
  72         OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
  73         OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
  74         OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
  75         OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
  76         OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
  77         OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
  78         OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
  79         OPT_GROUP(N_("Type")),
  80         OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
  81         OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
  82         OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
  83         OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
  84         OPT_BIT(0, "expiry-date", &types, N_("value is an expiry date"), TYPE_EXPIRY_DATE),
  85         OPT_GROUP(N_("Other")),
  86         OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
  87         OPT_BOOL(0, "name-only", &omit_values, N_("show variable names only")),
  88         OPT_BOOL(0, "includes", &respect_includes_opt, N_("respect include directives on lookup")),
  89         OPT_BOOL(0, "show-origin", &show_origin, N_("show origin of config (file, standard input, blob, command line)")),
  90         OPT_END(),
  91 };
  92
  93 static void check_argc(int argc, int min, int max) {
  94         if (argc >= min && argc <= max)
  95                 return;
  96         error("wrong number of arguments");
  97         usage_with_options(builtin_config_usage, builtin_config_options);
  98 }
  99
 100 static void show_config_origin(struct strbuf *buf)
 101 {
 102         const char term = end_null ? '\0' : '\t';
 103
 104         strbuf_addstr(buf, current_config_origin_type());
 105         strbuf_addch(buf, ':');
 106         if (end_null)
 107                 strbuf_addstr(buf, current_config_name());
 108         else
 109                 quote_c_style(current_config_name(), buf, NULL, 0);
 110         strbuf_addch(buf, term);
 111 }
 112
 113 static int show_all_config(const char *key_, const char *value_, void *cb)
 114 {
 115         if (show_origin) {
 116                 struct strbuf buf = STRBUF_INIT;
 117                 show_config_origin(&buf);
 118                 /* Use fwrite as "buf" can contain \0's if "end_null" is set. */
 119                 fwrite(buf.buf, 1, buf.len, stdout);
 120                 strbuf_release(&buf);
 121         }
 122         if (!omit_values && value_)
 123                 printf("%s%c%s%c", key_, delim, value_, term);
 124         else
 125                 printf("%s%c", key_, term);
 126         return 0;
 127 }
 128
 129 struct strbuf_list {
 130         struct strbuf *items;
 131         int nr;
 132         int alloc;
 133 };
 134
 135 static int format_config(struct strbuf *buf, const char *key_, const char *value_)
 136 {
 137         if (show_origin)
 138                 show_config_origin(buf);
 139         if (show_keys)
 140                 strbuf_addstr(buf, key_);
 141         if (!omit_values) {
 142                 if (show_keys)
 143                         strbuf_addch(buf, key_delim);
 144
 145                 if (types == TYPE_INT)
 146                         strbuf_addf(buf, "%"PRId64,
 147                                     git_config_int64(key_, value_ ? value_ : ""));
 148                 else if (types == TYPE_BOOL)
 149                         strbuf_addstr(buf, git_config_bool(key_, value_) ?
 150                                       "true" : "false");
 151                 else if (types == TYPE_BOOL_OR_INT) {
 152                         int is_bool, v;
 153                         v = git_config_bool_or_int(key_, value_, &is_bool);
 154                         if (is_bool)
 155                                 strbuf_addstr(buf, v ? "true" : "false");
 156                         else
 157                                 strbuf_addf(buf, "%d", v);
 158                 } else if (types == TYPE_PATH) {
 159                         const char *v;
 160                         if (git_config_pathname(&v, key_, value_) < 0)
 161                                 return -1;
 162                         strbuf_addstr(buf, v);
 163                         free((char *)v);
 164                 } else if (types == TYPE_EXPIRY_DATE) {
 165                         timestamp_t t;
 166                         if (git_config_expiry_date(&t, key_, value_) < 0)
 167                                 return -1;
 168                         strbuf_addf(buf, "%"PRItime, t);
 169                 } else if (value_) {
 170                         strbuf_addstr(buf, value_);
 171                 } else {
 172                         /* Just show the key name; back out delimiter */
 173                         if (show_keys)
 174                                 strbuf_setlen(buf, buf->len - 1);
 175                 }
 176         }
 177         strbuf_addch(buf, term);
 178         return 0;
 179 }
 180
 181 static int collect_config(const char *key_, const char *value_, void *cb)
 182 {
 183         struct strbuf_list *values = cb;
 184
 185         if (!use_key_regexp && strcmp(key_, key))
 186                 return 0;
 187         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 188                 return 0;
 189         if (regexp != NULL &&
 190             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 191                 return 0;
 192
 193         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 194         strbuf_init(&values->items[values->nr], 0);
 195
 196         return format_config(&values->items[values->nr++], key_, value_);
 197 }
 198
 199 static int get_value(const char *key_, const char *regex_)
 200 {
 201         int ret = CONFIG_GENERIC_ERROR;
 202         struct strbuf_list values = {NULL};
 203         int i;
 204
 205         if (use_key_regexp) {
 206                 char *tl;
 207
 208                 /*
 209                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 210                  * work for more complex patterns like "^[^.]*Foo.*bar".
 211                  * Perhaps we should deprecate this altogether someday.
 212                  */
 213
 214                 key = xstrdup(key_);
 215                 for (tl = key + strlen(key) - 1;
 216                      tl >= key && *tl != '.';
 217                      tl--)
 218                         *tl = tolower(*tl);
 219                 for (tl = key; *tl && *tl != '.'; tl++)
 220                         *tl = tolower(*tl);
 221
 222                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 223                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 224                         error("invalid key pattern: %s", key_);
 225                         FREE_AND_NULL(key_regexp);
 226                         ret = CONFIG_INVALID_PATTERN;
 227                         goto free_strings;
 228                 }
 229         } else {
 230                 if (git_config_parse_key(key_, &key, NULL)) {
 231                         ret = CONFIG_INVALID_KEY;
 232                         goto free_strings;
 233                 }
 234         }
 235
 236         if (regex_) {
 237                 if (regex_[0] == '!') {
 238                         do_not_match = 1;
 239                         regex_++;
 240                 }
 241
 242                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 243                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 244                         error("invalid pattern: %s", regex_);
 245                         FREE_AND_NULL(regexp);
 246                         ret = CONFIG_INVALID_PATTERN;
 247                         goto free_strings;
 248                 }
 249         }
 250
 251         config_with_options(collect_config, &values,
 252                             &given_config_source, &config_options);
 253
 254         ret = !values.nr;
 255
 256         for (i = 0; i < values.nr; i++) {
 257                 struct strbuf *buf = values.items + i;
 258                 if (do_all || i == values.nr - 1)
 259                         fwrite(buf->buf, 1, buf->len, stdout);
 260                 strbuf_release(buf);
 261         }
 262         free(values.items);
 263
 264 free_strings:
 265         free(key);
 266         if (key_regexp) {
 267                 regfree(key_regexp);
 268                 free(key_regexp);
 269         }
 270         if (regexp) {
 271                 regfree(regexp);
 272                 free(regexp);
 273         }
 274
 275         return ret;
 276 }
 277
 278 static char *normalize_value(const char *key, const char *value)
 279 {
 280         if (!value)
 281                 return NULL;
 282
 283         if (types == 0 || types == TYPE_PATH || types == TYPE_EXPIRY_DATE)
 284                 /*
 285                  * We don't do normalization for TYPE_PATH here: If
 286                  * the path is like ~/foobar/, we prefer to store
 287                  * "~/foobar/" in the config file, and to expand the ~
 288                  * when retrieving the value.
 289                  * Also don't do normalization for expiry dates.
 290                  */
 291                 return xstrdup(value);
 292         if (types == TYPE_INT)
 293                 return xstrfmt("%"PRId64, git_config_int64(key, value));
 294         if (types == TYPE_BOOL)
 295                 return xstrdup(git_config_bool(key, value) ?  "true" : "false");
 296         if (types == TYPE_BOOL_OR_INT) {
 297                 int is_bool, v;
 298                 v = git_config_bool_or_int(key, value, &is_bool);
 299                 if (!is_bool)
 300                         return xstrfmt("%d", v);
 301                 else
 302                         return xstrdup(v ? "true" : "false");
 303         }
 304
 305         die("BUG: cannot normalize type %d", types);
 306 }
 307
 308 static int get_color_found;
 309 static const char *get_color_slot;
 310 static const char *get_colorbool_slot;
 311 static char parsed_color[COLOR_MAXLEN];
 312
 313 static int git_get_color_config(const char *var, const char *value, void *cb)
 314 {
 315         if (!strcmp(var, get_color_slot)) {
 316                 if (!value)
 317                         config_error_nonbool(var);
 318                 if (color_parse(value, parsed_color) < 0)
 319                         return -1;
 320                 get_color_found = 1;
 321         }
 322         return 0;
 323 }
 324
 325 static void get_color(const char *var, const char *def_color)
 326 {
 327         get_color_slot = var;
 328         get_color_found = 0;
 329         parsed_color[0] = '\0';
 330         config_with_options(git_get_color_config, NULL,
 331                             &given_config_source, &config_options);
 332
 333         if (!get_color_found && def_color) {
 334                 if (color_parse(def_color, parsed_color) < 0)
 335                         die(_("unable to parse default color value"));
 336         }
 337
 338         fputs(parsed_color, stdout);
 339 }
 340
 341 static int get_colorbool_found;
 342 static int get_diff_color_found;
 343 static int get_color_ui_found;
 344 static int git_get_colorbool_config(const char *var, const char *value,
 345                 void *cb)
 346 {
 347         if (!strcmp(var, get_colorbool_slot))
 348                 get_colorbool_found = git_config_colorbool(var, value);
 349         else if (!strcmp(var, "diff.color"))
 350                 get_diff_color_found = git_config_colorbool(var, value);
 351         else if (!strcmp(var, "color.ui"))
 352                 get_color_ui_found = git_config_colorbool(var, value);
 353         return 0;
 354 }
 355
 356 static int get_colorbool(const char *var, int print)
 357 {
 358         get_colorbool_slot = var;
 359         get_colorbool_found = -1;
 360         get_diff_color_found = -1;
 361         get_color_ui_found = -1;
 362         config_with_options(git_get_colorbool_config, NULL,
 363                             &given_config_source, &config_options);
 364
 365         if (get_colorbool_found < 0) {
 366                 if (!strcmp(get_colorbool_slot, "color.diff"))
 367                         get_colorbool_found = get_diff_color_found;
 368                 if (get_colorbool_found < 0)
 369                         get_colorbool_found = get_color_ui_found;
 370         }
 371
 372         if (get_colorbool_found < 0)
 373                 /* default value if none found in config */
 374                 get_colorbool_found = GIT_COLOR_AUTO;
 375
 376         get_colorbool_found = want_color(get_colorbool_found);
 377
 378         if (print) {
 379                 printf("%s\n", get_colorbool_found ? "true" : "false");
 380                 return 0;
 381         } else
 382                 return get_colorbool_found ? 0 : 1;
 383 }
 384
 385 static void check_write(void)
 386 {
 387         if (!given_config_source.file && !startup_info->have_repository)
 388                 die("not in a git directory");
 389
 390         if (given_config_source.use_stdin)
 391                 die("writing to stdin is not supported");
 392
 393         if (given_config_source.blob)
 394                 die("writing config blobs is not supported");
 395 }
 396
 397 struct urlmatch_current_candidate_value {
 398         char value_is_null;
 399         struct strbuf value;
 400 };
 401
 402 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
 403 {
 404         struct string_list *values = cb;
 405         struct string_list_item *item = string_list_insert(values, var);
 406         struct urlmatch_current_candidate_value *matched = item->util;
 407
 408         if (!matched) {
 409                 matched = xmalloc(sizeof(*matched));
 410                 strbuf_init(&matched->value, 0);
 411                 item->util = matched;
 412         } else {
 413                 strbuf_reset(&matched->value);
 414         }
 415
 416         if (value) {
 417                 strbuf_addstr(&matched->value, value);
 418                 matched->value_is_null = 0;
 419         } else {
 420                 matched->value_is_null = 1;
 421         }
 422         return 0;
 423 }
 424
 425 static int get_urlmatch(const char *var, const char *url)
 426 {
 427         int ret;
 428         char *section_tail;
 429         struct string_list_item *item;
 430         struct urlmatch_config config = { STRING_LIST_INIT_DUP };
 431         struct string_list values = STRING_LIST_INIT_DUP;
 432
 433         config.collect_fn = urlmatch_collect_fn;
 434         config.cascade_fn = NULL;
 435         config.cb = &values;
 436
 437         if (!url_normalize(url, &config.url))
 438                 die("%s", config.url.err);
 439
 440         config.section = xstrdup_tolower(var);
 441         section_tail = strchr(config.section, '.');
 442         if (section_tail) {
 443                 *section_tail = '\0';
 444                 config.key = section_tail + 1;
 445                 show_keys = 0;
 446         } else {
 447                 config.key = NULL;
 448                 show_keys = 1;
 449         }
 450
 451         config_with_options(urlmatch_config_entry, &config,
 452                             &given_config_source, &config_options);
 453
 454         ret = !values.nr;
 455
 456         for_each_string_list_item(item, &values) {
 457                 struct urlmatch_current_candidate_value *matched = item->util;
 458                 struct strbuf buf = STRBUF_INIT;
 459
 460                 format_config(&buf, item->string,
 461                               matched->value_is_null ? NULL : matched->value.buf);
 462                 fwrite(buf.buf, 1, buf.len, stdout);
 463                 strbuf_release(&buf);
 464
 465                 strbuf_release(&matched->value);
 466         }
 467         string_list_clear(&config.vars, 1);
 468         string_list_clear(&values, 1);
 469         free(config.url.url);
 470
 471         free((void *)config.section);
 472         return ret;
 473 }
 474
 475 static char *default_user_config(void)
 476 {
 477         struct strbuf buf = STRBUF_INIT;
 478         strbuf_addf(&buf,
 479                     _("# This is Git's per-user configuration file.\n"
 480                       "[user]\n"
 481                       "# Please adapt and uncomment the following lines:\n"
 482                       "#        name = %s\n"
 483                       "#        email = %s\n"),
 484                     ident_default_name(),
 485                     ident_default_email());
 486         return strbuf_detach(&buf, NULL);
 487 }
 488
 489 int cmd_config(int argc, const char **argv, const char *prefix)
 490 {
 491         int nongit = !startup_info->have_repository;
 492         char *value;
 493
 494         given_config_source.file = getenv(CONFIG_ENVIRONMENT);
 495
 496         argc = parse_options(argc, argv, prefix, builtin_config_options,
 497                              builtin_config_usage,
 498                              PARSE_OPT_STOP_AT_NON_OPTION);
 499
 500         if (use_global_config + use_system_config + use_local_config +
 501             !!given_config_source.file + !!given_config_source.blob > 1) {
 502                 error("only one config file at a time.");
 503                 usage_with_options(builtin_config_usage, builtin_config_options);
 504         }
 505
 506         if (use_local_config && nongit)
 507                 die(_("--local can only be used inside a git repository"));
 508
 509         if (given_config_source.file &&
 510                         !strcmp(given_config_source.file, "-")) {
 511                 given_config_source.file = NULL;
 512                 given_config_source.use_stdin = 1;
 513         }
 514
 515         if (use_global_config) {
 516                 char *user_config = expand_user_path("~/.gitconfig", 0);
 517                 char *xdg_config = xdg_config_home("config");
 518
 519                 if (!user_config)
 520                         /*
 521                          * It is unknown if HOME/.gitconfig exists, so
 522                          * we do not know if we should write to XDG
 523                          * location; error out even if XDG_CONFIG_HOME
 524                          * is set and points at a sane location.
 525                          */
 526                         die("$HOME not set");
 527
 528                 if (access_or_warn(user_config, R_OK, 0) &&
 529                     xdg_config && !access_or_warn(xdg_config, R_OK, 0)) {
 530                         given_config_source.file = xdg_config;
 531                         free(user_config);
 532                 } else {
 533                         given_config_source.file = user_config;
 534                         free(xdg_config);
 535                 }
 536         }
 537         else if (use_system_config)
 538                 given_config_source.file = git_etc_gitconfig();
 539         else if (use_local_config)
 540                 given_config_source.file = git_pathdup("config");
 541         else if (given_config_source.file) {
 542                 if (!is_absolute_path(given_config_source.file) && prefix)
 543                         given_config_source.file =
 544                                 prefix_filename(prefix, given_config_source.file);
 545         }
 546
 547         if (respect_includes_opt == -1)
 548                 config_options.respect_includes = !given_config_source.file;
 549         else
 550                 config_options.respect_includes = respect_includes_opt;
 551         if (!nongit) {
 552                 config_options.commondir = get_git_common_dir();
 553                 config_options.git_dir = get_git_dir();
 554         }
 555
 556         if (end_null) {
 557                 term = '\0';
 558                 delim = '\n';
 559                 key_delim = '\n';
 560         }
 561
 562         if (HAS_MULTI_BITS(types)) {
 563                 error("only one type at a time.");
 564                 usage_with_options(builtin_config_usage, builtin_config_options);
 565         }
 566
 567         if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && types) {
 568                 error("--get-color and variable type are incoherent");
 569                 usage_with_options(builtin_config_usage, builtin_config_options);
 570         }
 571
 572         if (HAS_MULTI_BITS(actions)) {
 573                 error("only one action at a time.");
 574                 usage_with_options(builtin_config_usage, builtin_config_options);
 575         }
 576         if (actions == 0)
 577                 switch (argc) {
 578                 case 1: actions = ACTION_GET; break;
 579                 case 2: actions = ACTION_SET; break;
 580                 case 3: actions = ACTION_SET_ALL; break;
 581                 default:
 582                         usage_with_options(builtin_config_usage, builtin_config_options);
 583                 }
 584         if (omit_values &&
 585             !(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
 586                 error("--name-only is only applicable to --list or --get-regexp");
 587                 usage_with_options(builtin_config_usage, builtin_config_options);
 588         }
 589
 590         if (show_origin && !(actions &
 591                 (ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
 592                 error("--show-origin is only applicable to --get, --get-all, "
 593                           "--get-regexp, and --list.");
 594                 usage_with_options(builtin_config_usage, builtin_config_options);
 595         }
 596
 597         if (actions == ACTION_LIST) {
 598                 check_argc(argc, 0, 0);
 599                 if (config_with_options(show_all_config, NULL,
 600                                         &given_config_source,
 601                                         &config_options) < 0) {
 602                         if (given_config_source.file)
 603                                 die_errno("unable to read config file '%s'",
 604                                           given_config_source.file);
 605                         else
 606                                 die("error processing config file(s)");
 607                 }
 608         }
 609         else if (actions == ACTION_EDIT) {
 610                 char *config_file;
 611
 612                 check_argc(argc, 0, 0);
 613                 if (!given_config_source.file && nongit)
 614                         die("not in a git directory");
 615                 if (given_config_source.use_stdin)
 616                         die("editing stdin is not supported");
 617                 if (given_config_source.blob)
 618                         die("editing blobs is not supported");
 619                 git_config(git_default_config, NULL);
 620                 config_file = given_config_source.file ?
 621                                 xstrdup(given_config_source.file) :
 622                                 git_pathdup("config");
 623                 if (use_global_config) {
 624                         int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
 625                         if (fd >= 0) {
 626                                 char *content = default_user_config();
 627                                 write_str_in_full(fd, content);
 628                                 free(content);
 629                                 close(fd);
 630                         }
 631                         else if (errno != EEXIST)
 632                                 die_errno(_("cannot create configuration file %s"), config_file);
 633                 }
 634                 launch_editor(config_file, NULL, NULL);
 635                 free(config_file);
 636         }
 637         else if (actions == ACTION_SET) {
 638                 int ret;
 639                 check_write();
 640                 check_argc(argc, 2, 2);
 641                 value = normalize_value(argv[0], argv[1]);
 642                 UNLEAK(value);
 643                 ret = git_config_set_in_file_gently(given_config_source.file, argv[0], value);
 644                 if (ret == CONFIG_NOTHING_SET)
 645                         error(_("cannot overwrite multiple values with a single value\n"
 646                         "       Use a regexp, --add or --replace-all to change %s."), argv[0]);
 647                 return ret;
 648         }
 649         else if (actions == ACTION_SET_ALL) {
 650                 check_write();
 651                 check_argc(argc, 2, 3);
 652                 value = normalize_value(argv[0], argv[1]);
 653                 UNLEAK(value);
 654                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 655                                                               argv[0], value, argv[2], 0);
 656         }
 657         else if (actions == ACTION_ADD) {
 658                 check_write();
 659                 check_argc(argc, 2, 2);
 660                 value = normalize_value(argv[0], argv[1]);
 661                 UNLEAK(value);
 662                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 663                                                               argv[0], value,
 664                                                               CONFIG_REGEX_NONE, 0);
 665         }
 666         else if (actions == ACTION_REPLACE_ALL) {
 667                 check_write();
 668                 check_argc(argc, 2, 3);
 669                 value = normalize_value(argv[0], argv[1]);
 670                 UNLEAK(value);
 671                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 672                                                               argv[0], value, argv[2], 1);
 673         }
 674         else if (actions == ACTION_GET) {
 675                 check_argc(argc, 1, 2);
 676                 return get_value(argv[0], argv[1]);
 677         }
 678         else if (actions == ACTION_GET_ALL) {
 679                 do_all = 1;
 680                 check_argc(argc, 1, 2);
 681                 return get_value(argv[0], argv[1]);
 682         }
 683         else if (actions == ACTION_GET_REGEXP) {
 684                 show_keys = 1;
 685                 use_key_regexp = 1;
 686                 do_all = 1;
 687                 check_argc(argc, 1, 2);
 688                 return get_value(argv[0], argv[1]);
 689         }
 690         else if (actions == ACTION_GET_URLMATCH) {
 691                 check_argc(argc, 2, 2);
 692                 return get_urlmatch(argv[0], argv[1]);
 693         }
 694         else if (actions == ACTION_UNSET) {
 695                 check_write();
 696                 check_argc(argc, 1, 2);
 697                 if (argc == 2)
 698                         return git_config_set_multivar_in_file_gently(given_config_source.file,
 699                                                                       argv[0], NULL, argv[1], 0);
 700                 else
 701                         return git_config_set_in_file_gently(given_config_source.file,
 702                                                              argv[0], NULL);
 703         }
 704         else if (actions == ACTION_UNSET_ALL) {
 705                 check_write();
 706                 check_argc(argc, 1, 2);
 707                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 708                                                               argv[0], NULL, argv[1], 1);
 709         }
 710         else if (actions == ACTION_RENAME_SECTION) {
 711                 int ret;
 712                 check_write();
 713                 check_argc(argc, 2, 2);
 714                 ret = git_config_rename_section_in_file(given_config_source.file,
 715                                                         argv[0], argv[1]);
 716                 if (ret < 0)
 717                         return ret;
 718                 if (ret == 0)
 719                         die("No such section!");
 720         }
 721         else if (actions == ACTION_REMOVE_SECTION) {
 722                 int ret;
 723                 check_write();
 724                 check_argc(argc, 1, 1);
 725                 ret = git_config_rename_section_in_file(given_config_source.file,
 726                                                         argv[0], NULL);
 727                 if (ret < 0)
 728                         return ret;
 729                 if (ret == 0)
 730                         die("No such section!");
 731         }
 732         else if (actions == ACTION_GET_COLOR) {
 733                 check_argc(argc, 1, 2);
 734                 get_color(argv[0], argv[1]);
 735         }
 736         else if (actions == ACTION_GET_COLORBOOL) {
 737                 check_argc(argc, 1, 2);
 738                 if (argc == 2)
 739                         color_stdout_is_tty = git_config_bool("command line", argv[1]);
 740                 return get_colorbool(argv[0], argc == 2);
 741         }
 742
 743         return 0;
 744 }