builtin/config.c

   1 #include "builtin.h"
   2 #include "abspath.h"
   3 #include "config.h"
   4 #include "color.h"
   5 #include "editor.h"
   6 #include "environment.h"
   7 #include "repository.h"
   8 #include "gettext.h"
   9 #include "ident.h"
  10 #include "parse-options.h"
  11 #include "urlmatch.h"
  12 #include "path.h"
  13 #include "quote.h"
  14 #include "setup.h"
  15 #include "strbuf.h"
  16 #include "worktree.h"
  17
  18 static const char *const builtin_config_usage[] = {
  19         N_("git config list [<file-option>] [<display-option>] [--includes]"),
  20         N_("git config get [<file-option>] [<display-option>] [--includes] [--all] [--regexp=<regexp>] [--value=<value>] [--fixed-value] [--default=<default>] <name>"),
  21         N_("git config set [<file-option>] [--type=<type>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
  22         N_("git config unset [<file-option>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
  23         N_("git config rename-section [<file-option>] <old-name> <new-name>"),
  24         N_("git config remove-section [<file-option>] <name>"),
  25         N_("git config edit [<file-option>]"),
  26         N_("git config [<file-option>] --get-colorbool <name> [<stdout-is-tty>]"),
  27         NULL
  28 };
  29
  30 static const char *const builtin_config_list_usage[] = {
  31         N_("git config list [<file-option>] [<display-option>] [--includes]"),
  32         NULL
  33 };
  34
  35 static const char *const builtin_config_get_usage[] = {
  36         N_("git config get [<file-option>] [<display-option>] [--includes] [--all] [--regexp=<regexp>] [--value=<value>] [--fixed-value] [--default=<default>] <name>"),
  37         NULL
  38 };
  39
  40 static const char *const builtin_config_set_usage[] = {
  41         N_("git config set [<file-option>] [--type=<type>] [--comment=<message>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
  42         NULL
  43 };
  44
  45 static const char *const builtin_config_unset_usage[] = {
  46         N_("git config unset [<file-option>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
  47         NULL
  48 };
  49
  50 static const char *const builtin_config_rename_section_usage[] = {
  51         N_("git config rename-section [<file-option>] <old-name> <new-name>"),
  52         NULL
  53 };
  54
  55 static const char *const builtin_config_remove_section_usage[] = {
  56         N_("git config remove-section [<file-option>] <name>"),
  57         NULL
  58 };
  59
  60 static const char *const builtin_config_edit_usage[] = {
  61         N_("git config edit [<file-option>]"),
  62         NULL
  63 };
  64
  65 #define CONFIG_LOCATION_OPTIONS(opts) \
  66         OPT_GROUP(N_("Config file location")), \
  67         OPT_BOOL(0, "global", &opts.use_global_config, N_("use global config file")), \
  68         OPT_BOOL(0, "system", &opts.use_system_config, N_("use system config file")), \
  69         OPT_BOOL(0, "local", &opts.use_local_config, N_("use repository config file")), \
  70         OPT_BOOL(0, "worktree", &opts.use_worktree_config, N_("use per-worktree config file")), \
  71         OPT_STRING('f', "file", &opts.source.file, N_("file"), N_("use given config file")), \
  72         OPT_STRING(0, "blob", &opts.source.blob, N_("blob-id"), N_("read config from given blob object"))
  73
  74 struct config_location_options {
  75         struct git_config_source source;
  76         struct config_options options;
  77         char *file_to_free;
  78         int use_global_config;
  79         int use_system_config;
  80         int use_local_config;
  81         int use_worktree_config;
  82         int respect_includes_opt;
  83 };
  84 #define CONFIG_LOCATION_OPTIONS_INIT { \
  85         .respect_includes_opt = -1, \
  86 }
  87
  88 #define CONFIG_TYPE_OPTIONS(type) \
  89         OPT_GROUP(N_("Type")), \
  90         OPT_CALLBACK('t', "type", &type, N_("type"), N_("value is given this type"), option_parse_type), \
  91         OPT_CALLBACK_VALUE(0, "bool", &type, N_("value is \"true\" or \"false\""), TYPE_BOOL), \
  92         OPT_CALLBACK_VALUE(0, "int", &type, N_("value is decimal number"), TYPE_INT), \
  93         OPT_CALLBACK_VALUE(0, "bool-or-int", &type, N_("value is --bool or --int"), TYPE_BOOL_OR_INT), \
  94         OPT_CALLBACK_VALUE(0, "bool-or-str", &type, N_("value is --bool or string"), TYPE_BOOL_OR_STR), \
  95         OPT_CALLBACK_VALUE(0, "path", &type, N_("value is a path (file or directory name)"), TYPE_PATH), \
  96         OPT_CALLBACK_VALUE(0, "expiry-date", &type, N_("value is an expiry date"), TYPE_EXPIRY_DATE)
  97
  98 #define CONFIG_DISPLAY_OPTIONS(opts) \
  99         OPT_GROUP(N_("Display options")), \
 100         OPT_BOOL('z', "null", &opts.end_nul, N_("terminate values with NUL byte")), \
 101         OPT_BOOL(0, "name-only", &opts.omit_values, N_("show variable names only")), \
 102         OPT_BOOL(0, "show-origin", &opts.show_origin, N_("show origin of config (file, standard input, blob, command line)")), \
 103         OPT_BOOL(0, "show-scope", &opts.show_scope, N_("show scope of config (worktree, local, global, system, command)")), \
 104         OPT_BOOL(0, "show-names", &opts.show_keys, N_("show config keys in addition to their values")), \
 105         CONFIG_TYPE_OPTIONS(opts.type)
 106
 107 struct config_display_options {
 108         int end_nul;
 109         int omit_values;
 110         int show_origin;
 111         int show_scope;
 112         int show_keys;
 113         int type;
 114         char *default_value;
 115         /* Populated via `display_options_init()`. */
 116         int term;
 117         int delim;
 118         int key_delim;
 119 };
 120 #define CONFIG_DISPLAY_OPTIONS_INIT { \
 121         .term = '\n', \
 122         .delim = '=', \
 123         .key_delim = ' ', \
 124 }
 125
 126 #define TYPE_BOOL               1
 127 #define TYPE_INT                2
 128 #define TYPE_BOOL_OR_INT        3
 129 #define TYPE_PATH               4
 130 #define TYPE_EXPIRY_DATE        5
 131 #define TYPE_COLOR              6
 132 #define TYPE_BOOL_OR_STR        7
 133
 134 #define OPT_CALLBACK_VALUE(s, l, v, h, i) \
 135         { OPTION_CALLBACK, (s), (l), (v), NULL, (h), PARSE_OPT_NOARG | \
 136         PARSE_OPT_NONEG, option_parse_type, (i) }
 137
 138 static int option_parse_type(const struct option *opt, const char *arg,
 139                              int unset)
 140 {
 141         int new_type, *to_type;
 142
 143         if (unset) {
 144                 *((int *) opt->value) = 0;
 145                 return 0;
 146         }
 147
 148         /*
 149          * To support '--<type>' style flags, begin with new_type equal to
 150          * opt->defval.
 151          */
 152         new_type = opt->defval;
 153         if (!new_type) {
 154                 if (!strcmp(arg, "bool"))
 155                         new_type = TYPE_BOOL;
 156                 else if (!strcmp(arg, "int"))
 157                         new_type = TYPE_INT;
 158                 else if (!strcmp(arg, "bool-or-int"))
 159                         new_type = TYPE_BOOL_OR_INT;
 160                 else if (!strcmp(arg, "bool-or-str"))
 161                         new_type = TYPE_BOOL_OR_STR;
 162                 else if (!strcmp(arg, "path"))
 163                         new_type = TYPE_PATH;
 164                 else if (!strcmp(arg, "expiry-date"))
 165                         new_type = TYPE_EXPIRY_DATE;
 166                 else if (!strcmp(arg, "color"))
 167                         new_type = TYPE_COLOR;
 168                 else
 169                         die(_("unrecognized --type argument, %s"), arg);
 170         }
 171
 172         to_type = opt->value;
 173         if (*to_type && *to_type != new_type) {
 174                 /*
 175                  * Complain when there is a new type not equal to the old type.
 176                  * This allows for combinations like '--int --type=int' and
 177                  * '--type=int --type=int', but disallows ones like '--type=bool
 178                  * --int' and '--type=bool
 179                  * --type=int'.
 180                  */
 181                 error(_("only one type at a time"));
 182                 exit(129);
 183         }
 184         *to_type = new_type;
 185
 186         return 0;
 187 }
 188
 189 static void check_argc(int argc, int min, int max)
 190 {
 191         if (argc >= min && argc <= max)
 192                 return;
 193         if (min == max)
 194                 error(_("wrong number of arguments, should be %d"), min);
 195         else
 196                 error(_("wrong number of arguments, should be from %d to %d"),
 197                       min, max);
 198         exit(129);
 199 }
 200
 201 static void show_config_origin(const struct config_display_options *opts,
 202                                const struct key_value_info *kvi,
 203                                struct strbuf *buf)
 204 {
 205         const char term = opts->end_nul ? '\0' : '\t';
 206
 207         strbuf_addstr(buf, config_origin_type_name(kvi->origin_type));
 208         strbuf_addch(buf, ':');
 209         if (opts->end_nul)
 210                 strbuf_addstr(buf, kvi->filename ? kvi->filename : "");
 211         else
 212                 quote_c_style(kvi->filename ? kvi->filename : "", buf, NULL, 0);
 213         strbuf_addch(buf, term);
 214 }
 215
 216 static void show_config_scope(const struct config_display_options *opts,
 217                               const struct key_value_info *kvi,
 218                               struct strbuf *buf)
 219 {
 220         const char term = opts->end_nul ? '\0' : '\t';
 221         const char *scope = config_scope_name(kvi->scope);
 222
 223         strbuf_addstr(buf, N_(scope));
 224         strbuf_addch(buf, term);
 225 }
 226
 227 static int show_all_config(const char *key_, const char *value_,
 228                            const struct config_context *ctx,
 229                            void *cb)
 230 {
 231         const struct config_display_options *opts = cb;
 232         const struct key_value_info *kvi = ctx->kvi;
 233
 234         if (opts->show_origin || opts->show_scope) {
 235                 struct strbuf buf = STRBUF_INIT;
 236                 if (opts->show_scope)
 237                         show_config_scope(opts, kvi, &buf);
 238                 if (opts->show_origin)
 239                         show_config_origin(opts, kvi, &buf);
 240                 /* Use fwrite as "buf" can contain \0's if "end_null" is set. */
 241                 fwrite(buf.buf, 1, buf.len, stdout);
 242                 strbuf_release(&buf);
 243         }
 244         if (!opts->omit_values && value_)
 245                 printf("%s%c%s%c", key_, opts->delim, value_, opts->term);
 246         else
 247                 printf("%s%c", key_, opts->term);
 248         return 0;
 249 }
 250
 251 struct strbuf_list {
 252         struct strbuf *items;
 253         int nr;
 254         int alloc;
 255 };
 256
 257 static int format_config(const struct config_display_options *opts,
 258                          struct strbuf *buf, const char *key_,
 259                          const char *value_, const struct key_value_info *kvi)
 260 {
 261         if (opts->show_scope)
 262                 show_config_scope(opts, kvi, buf);
 263         if (opts->show_origin)
 264                 show_config_origin(opts, kvi, buf);
 265         if (opts->show_keys)
 266                 strbuf_addstr(buf, key_);
 267         if (!opts->omit_values) {
 268                 if (opts->show_keys)
 269                         strbuf_addch(buf, opts->key_delim);
 270
 271                 if (opts->type == TYPE_INT)
 272                         strbuf_addf(buf, "%"PRId64,
 273                                     git_config_int64(key_, value_ ? value_ : "", kvi));
 274                 else if (opts->type == TYPE_BOOL)
 275                         strbuf_addstr(buf, git_config_bool(key_, value_) ?
 276                                       "true" : "false");
 277                 else if (opts->type == TYPE_BOOL_OR_INT) {
 278                         int is_bool, v;
 279                         v = git_config_bool_or_int(key_, value_, kvi,
 280                                                    &is_bool);
 281                         if (is_bool)
 282                                 strbuf_addstr(buf, v ? "true" : "false");
 283                         else
 284                                 strbuf_addf(buf, "%d", v);
 285                 } else if (opts->type == TYPE_BOOL_OR_STR) {
 286                         int v = git_parse_maybe_bool(value_);
 287                         if (v < 0)
 288                                 strbuf_addstr(buf, value_);
 289                         else
 290                                 strbuf_addstr(buf, v ? "true" : "false");
 291                 } else if (opts->type == TYPE_PATH) {
 292                         char *v;
 293                         if (git_config_pathname(&v, key_, value_) < 0)
 294                                 return -1;
 295                         strbuf_addstr(buf, v);
 296                         free((char *)v);
 297                 } else if (opts->type == TYPE_EXPIRY_DATE) {
 298                         timestamp_t t;
 299                         if (git_config_expiry_date(&t, key_, value_) < 0)
 300                                 return -1;
 301                         strbuf_addf(buf, "%"PRItime, t);
 302                 } else if (opts->type == TYPE_COLOR) {
 303                         char v[COLOR_MAXLEN];
 304                         if (git_config_color(v, key_, value_) < 0)
 305                                 return -1;
 306                         strbuf_addstr(buf, v);
 307                 } else if (value_) {
 308                         strbuf_addstr(buf, value_);
 309                 } else {
 310                         /* Just show the key name; back out delimiter */
 311                         if (opts->show_keys)
 312                                 strbuf_setlen(buf, buf->len - 1);
 313                 }
 314         }
 315         strbuf_addch(buf, opts->term);
 316         return 0;
 317 }
 318
 319 #define GET_VALUE_ALL        (1 << 0)
 320 #define GET_VALUE_KEY_REGEXP (1 << 1)
 321
 322 struct collect_config_data {
 323         const struct config_display_options *display_opts;
 324         struct strbuf_list *values;
 325         const char *value_pattern;
 326         const char *key;
 327         regex_t *regexp;
 328         regex_t *key_regexp;
 329         int do_not_match;
 330         unsigned get_value_flags;
 331         unsigned flags;
 332 };
 333
 334 static int collect_config(const char *key_, const char *value_,
 335                           const struct config_context *ctx, void *cb)
 336 {
 337         struct collect_config_data *data = cb;
 338         struct strbuf_list *values = data->values;
 339         const struct key_value_info *kvi = ctx->kvi;
 340
 341         if (!(data->get_value_flags & GET_VALUE_KEY_REGEXP) &&
 342             strcmp(key_, data->key))
 343                 return 0;
 344         if ((data->get_value_flags & GET_VALUE_KEY_REGEXP) &&
 345             regexec(data->key_regexp, key_, 0, NULL, 0))
 346                 return 0;
 347         if ((data->flags & CONFIG_FLAGS_FIXED_VALUE) &&
 348             strcmp(data->value_pattern, (value_?value_:"")))
 349                 return 0;
 350         if (data->regexp &&
 351             (data->do_not_match ^ !!regexec(data->regexp, (value_?value_:""), 0, NULL, 0)))
 352                 return 0;
 353
 354         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 355         strbuf_init(&values->items[values->nr], 0);
 356
 357         return format_config(data->display_opts, &values->items[values->nr++],
 358                              key_, value_, kvi);
 359 }
 360
 361 static int get_value(const struct config_location_options *opts,
 362                      const struct config_display_options *display_opts,
 363                      const char *key_, const char *regex_,
 364                      unsigned get_value_flags, unsigned flags)
 365 {
 366         int ret = CONFIG_GENERIC_ERROR;
 367         struct strbuf_list values = {NULL};
 368         struct collect_config_data data = {
 369                 .display_opts = display_opts,
 370                 .values = &values,
 371                 .get_value_flags = get_value_flags,
 372                 .flags = flags,
 373         };
 374         char *key = NULL;
 375         int i;
 376
 377         if (get_value_flags & GET_VALUE_KEY_REGEXP) {
 378                 char *tl;
 379
 380                 /*
 381                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 382                  * work for more complex patterns like "^[^.]*Foo.*bar".
 383                  * Perhaps we should deprecate this altogether someday.
 384                  */
 385
 386                 key = xstrdup(key_);
 387                 for (tl = key + strlen(key) - 1;
 388                      tl >= key && *tl != '.';
 389                      tl--)
 390                         *tl = tolower(*tl);
 391                 for (tl = key; *tl && *tl != '.'; tl++)
 392                         *tl = tolower(*tl);
 393
 394                 data.key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 395                 if (regcomp(data.key_regexp, key, REG_EXTENDED)) {
 396                         error(_("invalid key pattern: %s"), key_);
 397                         FREE_AND_NULL(data.key_regexp);
 398                         ret = CONFIG_INVALID_PATTERN;
 399                         goto free_strings;
 400                 }
 401         } else {
 402                 if (git_config_parse_key(key_, &key, NULL)) {
 403                         ret = CONFIG_INVALID_KEY;
 404                         goto free_strings;
 405                 }
 406
 407                 data.key = key;
 408         }
 409
 410         if (regex_ && (flags & CONFIG_FLAGS_FIXED_VALUE))
 411                 data.value_pattern = regex_;
 412         else if (regex_) {
 413                 if (regex_[0] == '!') {
 414                         data.do_not_match = 1;
 415                         regex_++;
 416                 }
 417
 418                 data.regexp = (regex_t*)xmalloc(sizeof(regex_t));
 419                 if (regcomp(data.regexp, regex_, REG_EXTENDED)) {
 420                         error(_("invalid pattern: %s"), regex_);
 421                         FREE_AND_NULL(data.regexp);
 422                         ret = CONFIG_INVALID_PATTERN;
 423                         goto free_strings;
 424                 }
 425         }
 426
 427         config_with_options(collect_config, &data,
 428                             &opts->source, the_repository,
 429                             &opts->options);
 430
 431         if (!values.nr && display_opts->default_value) {
 432                 struct key_value_info kvi = KVI_INIT;
 433                 struct strbuf *item;
 434
 435                 kvi_from_param(&kvi);
 436                 ALLOC_GROW(values.items, values.nr + 1, values.alloc);
 437                 item = &values.items[values.nr++];
 438                 strbuf_init(item, 0);
 439                 if (format_config(display_opts, item, key_,
 440                                   display_opts->default_value, &kvi) < 0)
 441                         die(_("failed to format default config value: %s"),
 442                             display_opts->default_value);
 443         }
 444
 445         ret = !values.nr;
 446
 447         for (i = 0; i < values.nr; i++) {
 448                 struct strbuf *buf = values.items + i;
 449                 if ((get_value_flags & GET_VALUE_ALL) || i == values.nr - 1)
 450                         fwrite(buf->buf, 1, buf->len, stdout);
 451                 strbuf_release(buf);
 452         }
 453         free(values.items);
 454
 455 free_strings:
 456         free(key);
 457         if (data.key_regexp) {
 458                 regfree(data.key_regexp);
 459                 free(data.key_regexp);
 460         }
 461         if (data.regexp) {
 462                 regfree(data.regexp);
 463                 free(data.regexp);
 464         }
 465
 466         return ret;
 467 }
 468
 469 static char *normalize_value(const char *key, const char *value,
 470                              int type, struct key_value_info *kvi)
 471 {
 472         if (!value)
 473                 return NULL;
 474
 475         if (type == 0 || type == TYPE_PATH || type == TYPE_EXPIRY_DATE)
 476                 /*
 477                  * We don't do normalization for TYPE_PATH here: If
 478                  * the path is like ~/foobar/, we prefer to store
 479                  * "~/foobar/" in the config file, and to expand the ~
 480                  * when retrieving the value.
 481                  * Also don't do normalization for expiry dates.
 482                  */
 483                 return xstrdup(value);
 484         if (type == TYPE_INT)
 485                 return xstrfmt("%"PRId64, git_config_int64(key, value, kvi));
 486         if (type == TYPE_BOOL)
 487                 return xstrdup(git_config_bool(key, value) ?  "true" : "false");
 488         if (type == TYPE_BOOL_OR_INT) {
 489                 int is_bool, v;
 490                 v = git_config_bool_or_int(key, value, kvi, &is_bool);
 491                 if (!is_bool)
 492                         return xstrfmt("%d", v);
 493                 else
 494                         return xstrdup(v ? "true" : "false");
 495         }
 496         if (type == TYPE_BOOL_OR_STR) {
 497                 int v = git_parse_maybe_bool(value);
 498                 if (v < 0)
 499                         return xstrdup(value);
 500                 else
 501                         return xstrdup(v ? "true" : "false");
 502         }
 503         if (type == TYPE_COLOR) {
 504                 char v[COLOR_MAXLEN];
 505                 if (git_config_color(v, key, value))
 506                         die(_("cannot parse color '%s'"), value);
 507
 508                 /*
 509                  * The contents of `v` now contain an ANSI escape
 510                  * sequence, not suitable for including within a
 511                  * configuration file. Treat the above as a
 512                  * "sanity-check", and return the given value, which we
 513                  * know is representable as valid color code.
 514                  */
 515                 return xstrdup(value);
 516         }
 517
 518         BUG("cannot normalize type %d", type);
 519 }
 520
 521 struct get_color_config_data {
 522         int get_color_found;
 523         const char *get_color_slot;
 524         char parsed_color[COLOR_MAXLEN];
 525 };
 526
 527 static int git_get_color_config(const char *var, const char *value,
 528                                 const struct config_context *ctx UNUSED,
 529                                 void *cb)
 530 {
 531         struct get_color_config_data *data = cb;
 532
 533         if (!strcmp(var, data->get_color_slot)) {
 534                 if (!value)
 535                         config_error_nonbool(var);
 536                 if (color_parse(value, data->parsed_color) < 0)
 537                         return -1;
 538                 data->get_color_found = 1;
 539         }
 540         return 0;
 541 }
 542
 543 static void get_color(const struct config_location_options *opts,
 544                       const char *var, const char *def_color)
 545 {
 546         struct get_color_config_data data = {
 547                 .get_color_slot = var,
 548                 .parsed_color[0] = '\0',
 549         };
 550
 551         config_with_options(git_get_color_config, &data,
 552                             &opts->source, the_repository,
 553                             &opts->options);
 554
 555         if (!data.get_color_found && def_color) {
 556                 if (color_parse(def_color, data.parsed_color) < 0)
 557                         die(_("unable to parse default color value"));
 558         }
 559
 560         fputs(data.parsed_color, stdout);
 561 }
 562
 563 struct get_colorbool_config_data {
 564         int get_colorbool_found;
 565         int get_diff_color_found;
 566         int get_color_ui_found;
 567         const char *get_colorbool_slot;
 568 };
 569
 570 static int git_get_colorbool_config(const char *var, const char *value,
 571                                     const struct config_context *ctx UNUSED,
 572                                     void *cb)
 573 {
 574         struct get_colorbool_config_data *data = cb;
 575
 576         if (!strcmp(var, data->get_colorbool_slot))
 577                 data->get_colorbool_found = git_config_colorbool(var, value);
 578         else if (!strcmp(var, "diff.color"))
 579                 data->get_diff_color_found = git_config_colorbool(var, value);
 580         else if (!strcmp(var, "color.ui"))
 581                 data->get_color_ui_found = git_config_colorbool(var, value);
 582         return 0;
 583 }
 584
 585 static int get_colorbool(const struct config_location_options *opts,
 586                          const char *var, int print)
 587 {
 588         struct get_colorbool_config_data data = {
 589                 .get_colorbool_slot = var,
 590                 .get_colorbool_found = -1,
 591                 .get_diff_color_found = -1,
 592                 .get_color_ui_found = -1,
 593         };
 594
 595         config_with_options(git_get_colorbool_config, &data,
 596                             &opts->source, the_repository,
 597                             &opts->options);
 598
 599         if (data.get_colorbool_found < 0) {
 600                 if (!strcmp(data.get_colorbool_slot, "color.diff"))
 601                         data.get_colorbool_found = data.get_diff_color_found;
 602                 if (data.get_colorbool_found < 0)
 603                         data.get_colorbool_found = data.get_color_ui_found;
 604         }
 605
 606         if (data.get_colorbool_found < 0)
 607                 /* default value if none found in config */
 608                 data.get_colorbool_found = GIT_COLOR_AUTO;
 609
 610         data.get_colorbool_found = want_color(data.get_colorbool_found);
 611
 612         if (print) {
 613                 printf("%s\n", data.get_colorbool_found ? "true" : "false");
 614                 return 0;
 615         } else
 616                 return data.get_colorbool_found ? 0 : 1;
 617 }
 618
 619 static void check_write(const struct git_config_source *source)
 620 {
 621         if (!source->file && !startup_info->have_repository)
 622                 die(_("not in a git directory"));
 623
 624         if (source->use_stdin)
 625                 die(_("writing to stdin is not supported"));
 626
 627         if (source->blob)
 628                 die(_("writing config blobs is not supported"));
 629 }
 630
 631 struct urlmatch_current_candidate_value {
 632         char value_is_null;
 633         struct strbuf value;
 634         struct key_value_info kvi;
 635 };
 636
 637 static int urlmatch_collect_fn(const char *var, const char *value,
 638                                const struct config_context *ctx,
 639                                void *cb)
 640 {
 641         struct string_list *values = cb;
 642         struct string_list_item *item = string_list_insert(values, var);
 643         struct urlmatch_current_candidate_value *matched = item->util;
 644         const struct key_value_info *kvi = ctx->kvi;
 645
 646         if (!matched) {
 647                 matched = xmalloc(sizeof(*matched));
 648                 strbuf_init(&matched->value, 0);
 649                 item->util = matched;
 650         } else {
 651                 strbuf_reset(&matched->value);
 652         }
 653         matched->kvi = *kvi;
 654
 655         if (value) {
 656                 strbuf_addstr(&matched->value, value);
 657                 matched->value_is_null = 0;
 658         } else {
 659                 matched->value_is_null = 1;
 660         }
 661         return 0;
 662 }
 663
 664 static int get_urlmatch(const struct config_location_options *opts,
 665                         const struct config_display_options *_display_opts,
 666                         const char *var, const char *url)
 667 {
 668         int ret;
 669         char *section_tail;
 670         struct config_display_options display_opts = *_display_opts;
 671         struct string_list_item *item;
 672         struct urlmatch_config config = URLMATCH_CONFIG_INIT;
 673         struct string_list values = STRING_LIST_INIT_DUP;
 674
 675         config.collect_fn = urlmatch_collect_fn;
 676         config.cascade_fn = NULL;
 677         config.cb = &values;
 678
 679         if (!url_normalize(url, &config.url))
 680                 die("%s", config.url.err);
 681
 682         config.section = xstrdup_tolower(var);
 683         section_tail = strchr(config.section, '.');
 684         if (section_tail) {
 685                 *section_tail = '\0';
 686                 config.key = section_tail + 1;
 687                 display_opts.show_keys = 0;
 688         } else {
 689                 config.key = NULL;
 690                 display_opts.show_keys = 1;
 691         }
 692
 693         config_with_options(urlmatch_config_entry, &config,
 694                             &opts->source, the_repository,
 695                             &opts->options);
 696
 697         ret = !values.nr;
 698
 699         for_each_string_list_item(item, &values) {
 700                 struct urlmatch_current_candidate_value *matched = item->util;
 701                 struct strbuf buf = STRBUF_INIT;
 702
 703                 format_config(&display_opts, &buf, item->string,
 704                               matched->value_is_null ? NULL : matched->value.buf,
 705                               &matched->kvi);
 706                 fwrite(buf.buf, 1, buf.len, stdout);
 707                 strbuf_release(&buf);
 708
 709                 strbuf_release(&matched->value);
 710         }
 711         urlmatch_config_release(&config);
 712         string_list_clear(&values, 1);
 713         free(config.url.url);
 714
 715         free((void *)config.section);
 716         return ret;
 717 }
 718
 719 static char *default_user_config(void)
 720 {
 721         struct strbuf buf = STRBUF_INIT;
 722         strbuf_addf(&buf,
 723                     _("# This is Git's per-user configuration file.\n"
 724                       "[user]\n"
 725                       "# Please adapt and uncomment the following lines:\n"
 726                       "#        name = %s\n"
 727                       "#        email = %s\n"),
 728                     ident_default_name(),
 729                     ident_default_email());
 730         return strbuf_detach(&buf, NULL);
 731 }
 732
 733 static void location_options_init(struct config_location_options *opts,
 734                                   const char *prefix)
 735 {
 736         if (!opts->source.file)
 737                 opts->source.file = opts->file_to_free =
 738                         xstrdup_or_null(getenv(CONFIG_ENVIRONMENT));
 739
 740         if (opts->use_global_config + opts->use_system_config +
 741             opts->use_local_config + opts->use_worktree_config +
 742             !!opts->source.file + !!opts->source.blob > 1) {
 743                 error(_("only one config file at a time"));
 744                 exit(129);
 745         }
 746
 747         if (!startup_info->have_repository) {
 748                 if (opts->use_local_config)
 749                         die(_("--local can only be used inside a git repository"));
 750                 if (opts->source.blob)
 751                         die(_("--blob can only be used inside a git repository"));
 752                 if (opts->use_worktree_config)
 753                         die(_("--worktree can only be used inside a git repository"));
 754         }
 755
 756         if (opts->source.file &&
 757                         !strcmp(opts->source.file, "-")) {
 758                 opts->source.file = NULL;
 759                 opts->source.use_stdin = 1;
 760                 opts->source.scope = CONFIG_SCOPE_COMMAND;
 761         }
 762
 763         if (opts->use_global_config) {
 764                 opts->source.file = opts->file_to_free = git_global_config();
 765                 if (!opts->source.file)
 766                         /*
 767                          * It is unknown if HOME/.gitconfig exists, so
 768                          * we do not know if we should write to XDG
 769                          * location; error out even if XDG_CONFIG_HOME
 770                          * is set and points at a sane location.
 771                          */
 772                         die(_("$HOME not set"));
 773                 opts->source.scope = CONFIG_SCOPE_GLOBAL;
 774         } else if (opts->use_system_config) {
 775                 opts->source.file = opts->file_to_free = git_system_config();
 776                 opts->source.scope = CONFIG_SCOPE_SYSTEM;
 777         } else if (opts->use_local_config) {
 778                 opts->source.file = opts->file_to_free = git_pathdup("config");
 779                 opts->source.scope = CONFIG_SCOPE_LOCAL;
 780         } else if (opts->use_worktree_config) {
 781                 struct worktree **worktrees = get_worktrees();
 782                 if (the_repository->repository_format_worktree_config)
 783                         opts->source.file = opts->file_to_free =
 784                                 git_pathdup("config.worktree");
 785                 else if (worktrees[0] && worktrees[1])
 786                         die(_("--worktree cannot be used with multiple "
 787                               "working trees unless the config\n"
 788                               "extension worktreeConfig is enabled. "
 789                               "Please read \"CONFIGURATION FILE\"\n"
 790                               "section in \"git help worktree\" for details"));
 791                 else
 792                         opts->source.file = opts->file_to_free =
 793                                 git_pathdup("config");
 794                 opts->source.scope = CONFIG_SCOPE_LOCAL;
 795                 free_worktrees(worktrees);
 796         } else if (opts->source.file) {
 797                 if (!is_absolute_path(opts->source.file) && prefix)
 798                         opts->source.file = opts->file_to_free =
 799                                 prefix_filename(prefix, opts->source.file);
 800                 opts->source.scope = CONFIG_SCOPE_COMMAND;
 801         } else if (opts->source.blob) {
 802                 opts->source.scope = CONFIG_SCOPE_COMMAND;
 803         }
 804
 805         if (opts->respect_includes_opt == -1)
 806                 opts->options.respect_includes = !opts->source.file;
 807         else
 808                 opts->options.respect_includes = opts->respect_includes_opt;
 809         if (startup_info->have_repository) {
 810                 opts->options.commondir = get_git_common_dir();
 811                 opts->options.git_dir = get_git_dir();
 812         }
 813 }
 814
 815 static void location_options_release(struct config_location_options *opts)
 816 {
 817         free(opts->file_to_free);
 818 }
 819
 820 static void display_options_init(struct config_display_options *opts)
 821 {
 822         if (opts->end_nul) {
 823                 opts->term = '\0';
 824                 opts->delim = '\n';
 825                 opts->key_delim = '\n';
 826         }
 827 }
 828
 829 static int cmd_config_list(int argc, const char **argv, const char *prefix)
 830 {
 831         struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
 832         struct config_display_options display_opts = CONFIG_DISPLAY_OPTIONS_INIT;
 833         struct option opts[] = {
 834                 CONFIG_LOCATION_OPTIONS(location_opts),
 835                 CONFIG_DISPLAY_OPTIONS(display_opts),
 836                 OPT_GROUP(N_("Other")),
 837                 OPT_BOOL(0, "includes", &location_opts.respect_includes_opt,
 838                          N_("respect include directives on lookup")),
 839                 OPT_END(),
 840         };
 841
 842         argc = parse_options(argc, argv, prefix, opts, builtin_config_list_usage, 0);
 843         check_argc(argc, 0, 0);
 844
 845         location_options_init(&location_opts, prefix);
 846         display_options_init(&display_opts);
 847
 848         setup_auto_pager("config", 1);
 849
 850         if (config_with_options(show_all_config, &display_opts,
 851                                 &location_opts.source, the_repository,
 852                                 &location_opts.options) < 0) {
 853                 if (location_opts.source.file)
 854                         die_errno(_("unable to read config file '%s'"),
 855                                   location_opts.source.file);
 856                 else
 857                         die(_("error processing config file(s)"));
 858         }
 859
 860         location_options_release(&location_opts);
 861         return 0;
 862 }
 863
 864 static int cmd_config_get(int argc, const char **argv, const char *prefix)
 865 {
 866         struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
 867         struct config_display_options display_opts = CONFIG_DISPLAY_OPTIONS_INIT;
 868         const char *value_pattern = NULL, *url = NULL;
 869         int flags = 0;
 870         unsigned get_value_flags = 0;
 871         struct option opts[] = {
 872                 CONFIG_LOCATION_OPTIONS(location_opts),
 873                 OPT_GROUP(N_("Filter options")),
 874                 OPT_BIT(0, "all", &get_value_flags, N_("return all values for multi-valued config options"), GET_VALUE_ALL),
 875                 OPT_BIT(0, "regexp", &get_value_flags, N_("interpret the name as a regular expression"), GET_VALUE_KEY_REGEXP),
 876                 OPT_STRING(0, "value", &value_pattern, N_("pattern"), N_("show config with values matching the pattern")),
 877                 OPT_BIT(0, "fixed-value", &flags, N_("use string equality when comparing values to value pattern"), CONFIG_FLAGS_FIXED_VALUE),
 878                 OPT_STRING(0, "url", &url, N_("URL"), N_("show config matching the given URL")),
 879                 CONFIG_DISPLAY_OPTIONS(display_opts),
 880                 OPT_GROUP(N_("Other")),
 881                 OPT_BOOL(0, "includes", &location_opts.respect_includes_opt,
 882                          N_("respect include directives on lookup")),
 883                 OPT_STRING(0, "default", &display_opts.default_value,
 884                            N_("value"), N_("use default value when missing entry")),
 885                 OPT_END(),
 886         };
 887         int ret;
 888
 889         argc = parse_options(argc, argv, prefix, opts, builtin_config_get_usage,
 890                              PARSE_OPT_STOP_AT_NON_OPTION);
 891         check_argc(argc, 1, 1);
 892
 893         if ((flags & CONFIG_FLAGS_FIXED_VALUE) && !value_pattern)
 894                 die(_("--fixed-value only applies with 'value-pattern'"));
 895         if (display_opts.default_value &&
 896             ((get_value_flags & GET_VALUE_ALL) || url))
 897                 die(_("--default= cannot be used with --all or --url="));
 898         if (url && ((get_value_flags & GET_VALUE_ALL) ||
 899                     (get_value_flags & GET_VALUE_KEY_REGEXP) ||
 900                     value_pattern))
 901                 die(_("--url= cannot be used with --all, --regexp or --value"));
 902
 903         location_options_init(&location_opts, prefix);
 904         display_options_init(&display_opts);
 905
 906         setup_auto_pager("config", 1);
 907
 908         if (url)
 909                 ret = get_urlmatch(&location_opts, &display_opts, argv[0], url);
 910         else
 911                 ret = get_value(&location_opts, &display_opts, argv[0], value_pattern,
 912                                 get_value_flags, flags);
 913
 914         location_options_release(&location_opts);
 915         return ret;
 916 }
 917
 918 static int cmd_config_set(int argc, const char **argv, const char *prefix)
 919 {
 920         struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
 921         const char *value_pattern = NULL, *comment_arg = NULL;
 922         char *comment = NULL;
 923         int flags = 0, append = 0, type = 0;
 924         struct option opts[] = {
 925                 CONFIG_LOCATION_OPTIONS(location_opts),
 926                 CONFIG_TYPE_OPTIONS(type),
 927                 OPT_GROUP(N_("Filter")),
 928                 OPT_BIT(0, "all", &flags, N_("replace multi-valued config option with new value"), CONFIG_FLAGS_MULTI_REPLACE),
 929                 OPT_STRING(0, "value", &value_pattern, N_("pattern"), N_("show config with values matching the pattern")),
 930                 OPT_BIT(0, "fixed-value", &flags, N_("use string equality when comparing values to value pattern"), CONFIG_FLAGS_FIXED_VALUE),
 931                 OPT_GROUP(N_("Other")),
 932                 OPT_STRING(0, "comment", &comment_arg, N_("value"), N_("human-readable comment string (# will be prepended as needed)")),
 933                 OPT_BOOL(0, "append", &append, N_("add a new line without altering any existing values")),
 934                 OPT_END(),
 935         };
 936         struct key_value_info default_kvi = KVI_INIT;
 937         char *value;
 938         int ret;
 939
 940         argc = parse_options(argc, argv, prefix, opts, builtin_config_set_usage,
 941                              PARSE_OPT_STOP_AT_NON_OPTION);
 942         check_argc(argc, 2, 2);
 943
 944         if ((flags & CONFIG_FLAGS_FIXED_VALUE) && !value_pattern)
 945                 die(_("--fixed-value only applies with --value=<pattern>"));
 946         if (append && value_pattern)
 947                 die(_("--append cannot be used with --value=<pattern>"));
 948         if (append)
 949                 value_pattern = CONFIG_REGEX_NONE;
 950
 951         comment = git_config_prepare_comment_string(comment_arg);
 952
 953         location_options_init(&location_opts, prefix);
 954         check_write(&location_opts.source);
 955
 956         value = normalize_value(argv[0], argv[1], type, &default_kvi);
 957
 958         if ((flags & CONFIG_FLAGS_MULTI_REPLACE) || value_pattern) {
 959                 ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
 960                                                              argv[0], value, value_pattern,
 961                                                              comment, flags);
 962         } else {
 963                 ret = git_config_set_in_file_gently(location_opts.source.file,
 964                                                     argv[0], comment, value);
 965                 if (ret == CONFIG_NOTHING_SET)
 966                         error(_("cannot overwrite multiple values with a single value\n"
 967                         "       Use a regexp, --add or --replace-all to change %s."), argv[0]);
 968         }
 969
 970         location_options_release(&location_opts);
 971         free(comment);
 972         free(value);
 973         return ret;
 974 }
 975
 976 static int cmd_config_unset(int argc, const char **argv, const char *prefix)
 977 {
 978         struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
 979         const char *value_pattern = NULL;
 980         int flags = 0;
 981         struct option opts[] = {
 982                 CONFIG_LOCATION_OPTIONS(location_opts),
 983                 OPT_GROUP(N_("Filter")),
 984                 OPT_BIT(0, "all", &flags, N_("replace multi-valued config option with new value"), CONFIG_FLAGS_MULTI_REPLACE),
 985                 OPT_STRING(0, "value", &value_pattern, N_("pattern"), N_("show config with values matching the pattern")),
 986                 OPT_BIT(0, "fixed-value", &flags, N_("use string equality when comparing values to value pattern"), CONFIG_FLAGS_FIXED_VALUE),
 987                 OPT_END(),
 988         };
 989         int ret;
 990
 991         argc = parse_options(argc, argv, prefix, opts, builtin_config_unset_usage,
 992                              PARSE_OPT_STOP_AT_NON_OPTION);
 993         check_argc(argc, 1, 1);
 994
 995         if ((flags & CONFIG_FLAGS_FIXED_VALUE) && !value_pattern)
 996                 die(_("--fixed-value only applies with 'value-pattern'"));
 997
 998         location_options_init(&location_opts, prefix);
 999         check_write(&location_opts.source);
1000
1001         if ((flags & CONFIG_FLAGS_MULTI_REPLACE) || value_pattern)
1002                 ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1003                                                              argv[0], NULL, value_pattern,
1004                                                              NULL, flags);
1005         else
1006                 ret = git_config_set_in_file_gently(location_opts.source.file, argv[0],
1007                                                     NULL, NULL);
1008
1009         location_options_release(&location_opts);
1010         return ret;
1011 }
1012
1013 static int cmd_config_rename_section(int argc, const char **argv, const char *prefix)
1014 {
1015         struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
1016         struct option opts[] = {
1017                 CONFIG_LOCATION_OPTIONS(location_opts),
1018                 OPT_END(),
1019         };
1020         int ret;
1021
1022         argc = parse_options(argc, argv, prefix, opts, builtin_config_rename_section_usage,
1023                              PARSE_OPT_STOP_AT_NON_OPTION);
1024         check_argc(argc, 2, 2);
1025
1026         location_options_init(&location_opts, prefix);
1027         check_write(&location_opts.source);
1028
1029         ret = git_config_rename_section_in_file(location_opts.source.file,
1030                                                 argv[0], argv[1]);
1031         if (ret < 0)
1032                 goto out;
1033         else if (!ret)
1034                 die(_("no such section: %s"), argv[0]);
1035         ret = 0;
1036
1037 out:
1038         location_options_release(&location_opts);
1039         return ret;
1040 }
1041
1042 static int cmd_config_remove_section(int argc, const char **argv, const char *prefix)
1043 {
1044         struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
1045         struct option opts[] = {
1046                 CONFIG_LOCATION_OPTIONS(location_opts),
1047                 OPT_END(),
1048         };
1049         int ret;
1050
1051         argc = parse_options(argc, argv, prefix, opts, builtin_config_remove_section_usage,
1052                              PARSE_OPT_STOP_AT_NON_OPTION);
1053         check_argc(argc, 1, 1);
1054
1055         location_options_init(&location_opts, prefix);
1056         check_write(&location_opts.source);
1057
1058         ret = git_config_rename_section_in_file(location_opts.source.file,
1059                                                 argv[0], NULL);
1060         if (ret < 0)
1061                 goto out;
1062         else if (!ret)
1063                 die(_("no such section: %s"), argv[0]);
1064         ret = 0;
1065
1066 out:
1067         location_options_release(&location_opts);
1068         return ret;
1069 }
1070
1071 static int show_editor(struct config_location_options *opts)
1072 {
1073         char *config_file;
1074
1075         if (!opts->source.file && !startup_info->have_repository)
1076                 die(_("not in a git directory"));
1077         if (opts->source.use_stdin)
1078                 die(_("editing stdin is not supported"));
1079         if (opts->source.blob)
1080                 die(_("editing blobs is not supported"));
1081         git_config(git_default_config, NULL);
1082         config_file = opts->source.file ?
1083                         xstrdup(opts->source.file) :
1084                         git_pathdup("config");
1085         if (opts->use_global_config) {
1086                 int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
1087                 if (fd >= 0) {
1088                         char *content = default_user_config();
1089                         write_str_in_full(fd, content);
1090                         free(content);
1091                         close(fd);
1092                 }
1093                 else if (errno != EEXIST)
1094                         die_errno(_("cannot create configuration file %s"), config_file);
1095         }
1096         launch_editor(config_file, NULL, NULL);
1097         free(config_file);
1098
1099         return 0;
1100 }
1101
1102 static int cmd_config_edit(int argc, const char **argv, const char *prefix)
1103 {
1104         struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
1105         struct option opts[] = {
1106                 CONFIG_LOCATION_OPTIONS(location_opts),
1107                 OPT_END(),
1108         };
1109         int ret;
1110
1111         argc = parse_options(argc, argv, prefix, opts, builtin_config_edit_usage, 0);
1112         check_argc(argc, 0, 0);
1113
1114         location_options_init(&location_opts, prefix);
1115         check_write(&location_opts.source);
1116
1117         ret = show_editor(&location_opts);
1118         location_options_release(&location_opts);
1119         return ret;
1120 }
1121
1122 static int cmd_config_actions(int argc, const char **argv, const char *prefix)
1123 {
1124         enum {
1125                 ACTION_GET = (1<<0),
1126                 ACTION_GET_ALL = (1<<1),
1127                 ACTION_GET_REGEXP = (1<<2),
1128                 ACTION_REPLACE_ALL = (1<<3),
1129                 ACTION_ADD = (1<<4),
1130                 ACTION_UNSET = (1<<5),
1131                 ACTION_UNSET_ALL = (1<<6),
1132                 ACTION_RENAME_SECTION = (1<<7),
1133                 ACTION_REMOVE_SECTION = (1<<8),
1134                 ACTION_LIST = (1<<9),
1135                 ACTION_EDIT = (1<<10),
1136                 ACTION_SET = (1<<11),
1137                 ACTION_SET_ALL = (1<<12),
1138                 ACTION_GET_COLOR = (1<<13),
1139                 ACTION_GET_COLORBOOL = (1<<14),
1140                 ACTION_GET_URLMATCH = (1<<15),
1141         };
1142         struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
1143         struct config_display_options display_opts = CONFIG_DISPLAY_OPTIONS_INIT;
1144         const char *comment_arg = NULL;
1145         int actions = 0;
1146         unsigned flags = 0;
1147         struct option opts[] = {
1148                 CONFIG_LOCATION_OPTIONS(location_opts),
1149                 OPT_GROUP(N_("Action")),
1150                 OPT_CMDMODE(0, "get", &actions, N_("get value: name [<value-pattern>]"), ACTION_GET),
1151                 OPT_CMDMODE(0, "get-all", &actions, N_("get all values: key [<value-pattern>]"), ACTION_GET_ALL),
1152                 OPT_CMDMODE(0, "get-regexp", &actions, N_("get values for regexp: name-regex [<value-pattern>]"), ACTION_GET_REGEXP),
1153                 OPT_CMDMODE(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
1154                 OPT_CMDMODE(0, "replace-all", &actions, N_("replace all matching variables: name value [<value-pattern>]"), ACTION_REPLACE_ALL),
1155                 OPT_CMDMODE(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
1156                 OPT_CMDMODE(0, "unset", &actions, N_("remove a variable: name [<value-pattern>]"), ACTION_UNSET),
1157                 OPT_CMDMODE(0, "unset-all", &actions, N_("remove all matches: name [<value-pattern>]"), ACTION_UNSET_ALL),
1158                 OPT_CMDMODE(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
1159                 OPT_CMDMODE(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
1160                 OPT_CMDMODE('l', "list", &actions, N_("list all"), ACTION_LIST),
1161                 OPT_CMDMODE('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
1162                 OPT_CMDMODE(0, "get-color", &actions, N_("find the color configured: slot [<default>]"), ACTION_GET_COLOR),
1163                 OPT_CMDMODE(0, "get-colorbool", &actions, N_("find the color setting: slot [<stdout-is-tty>]"), ACTION_GET_COLORBOOL),
1164                 CONFIG_DISPLAY_OPTIONS(display_opts),
1165                 OPT_GROUP(N_("Other")),
1166                 OPT_STRING(0, "default", &display_opts.default_value,
1167                            N_("value"), N_("with --get, use default value when missing entry")),
1168                 OPT_STRING(0, "comment", &comment_arg, N_("value"), N_("human-readable comment string (# will be prepended as needed)")),
1169                 OPT_BIT(0, "fixed-value", &flags, N_("use string equality when comparing values to value pattern"), CONFIG_FLAGS_FIXED_VALUE),
1170                 OPT_BOOL(0, "includes", &location_opts.respect_includes_opt,
1171                          N_("respect include directives on lookup")),
1172                 OPT_END(),
1173         };
1174         char *value = NULL, *comment = NULL;
1175         int ret = 0;
1176         struct key_value_info default_kvi = KVI_INIT;
1177
1178         argc = parse_options(argc, argv, prefix, opts,
1179                              builtin_config_usage,
1180                              PARSE_OPT_STOP_AT_NON_OPTION);
1181
1182         location_options_init(&location_opts, prefix);
1183         display_options_init(&display_opts);
1184
1185         if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && display_opts.type) {
1186                 error(_("--get-color and variable type are incoherent"));
1187                 exit(129);
1188         }
1189
1190         if (actions == 0)
1191                 switch (argc) {
1192                 case 1: actions = ACTION_GET; break;
1193                 case 2: actions = ACTION_SET; break;
1194                 case 3: actions = ACTION_SET_ALL; break;
1195                 default:
1196                         error(_("no action specified"));
1197                         exit(129);
1198                 }
1199         if (display_opts.omit_values &&
1200             !(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
1201                 error(_("--name-only is only applicable to --list or --get-regexp"));
1202                 exit(129);
1203         }
1204
1205         if (display_opts.show_origin && !(actions &
1206                 (ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
1207                 error(_("--show-origin is only applicable to --get, --get-all, "
1208                         "--get-regexp, and --list"));
1209                 exit(129);
1210         }
1211
1212         if (display_opts.default_value && !(actions & ACTION_GET)) {
1213                 error(_("--default is only applicable to --get"));
1214                 exit(129);
1215         }
1216
1217         if (comment_arg &&
1218             !(actions & (ACTION_ADD|ACTION_SET|ACTION_SET_ALL|ACTION_REPLACE_ALL))) {
1219                 error(_("--comment is only applicable to add/set/replace operations"));
1220                 exit(129);
1221         }
1222
1223         /* check usage of --fixed-value */
1224         if (flags & CONFIG_FLAGS_FIXED_VALUE) {
1225                 int allowed_usage = 0;
1226
1227                 switch (actions) {
1228                 /* git config --get <name> <value-pattern> */
1229                 case ACTION_GET:
1230                 /* git config --get-all <name> <value-pattern> */
1231                 case ACTION_GET_ALL:
1232                 /* git config --get-regexp <name-pattern> <value-pattern> */
1233                 case ACTION_GET_REGEXP:
1234                 /* git config --unset <name> <value-pattern> */
1235                 case ACTION_UNSET:
1236                 /* git config --unset-all <name> <value-pattern> */
1237                 case ACTION_UNSET_ALL:
1238                         allowed_usage = argc > 1 && !!argv[1];
1239                         break;
1240
1241                 /* git config <name> <value> <value-pattern> */
1242                 case ACTION_SET_ALL:
1243                 /* git config --replace-all <name> <value> <value-pattern> */
1244                 case ACTION_REPLACE_ALL:
1245                         allowed_usage = argc > 2 && !!argv[2];
1246                         break;
1247
1248                 /* other options don't allow --fixed-value */
1249                 }
1250
1251                 if (!allowed_usage) {
1252                         error(_("--fixed-value only applies with 'value-pattern'"));
1253                         exit(129);
1254                 }
1255         }
1256
1257         comment = git_config_prepare_comment_string(comment_arg);
1258
1259         /*
1260          * The following actions may produce more than one line of output and
1261          * should therefore be paged.
1262          */
1263         if (actions & (ACTION_LIST | ACTION_GET_ALL | ACTION_GET_REGEXP | ACTION_GET_URLMATCH))
1264                 setup_auto_pager("config", 1);
1265
1266         if (actions == ACTION_LIST) {
1267                 check_argc(argc, 0, 0);
1268                 if (config_with_options(show_all_config, &display_opts,
1269                                         &location_opts.source, the_repository,
1270                                         &location_opts.options) < 0) {
1271                         if (location_opts.source.file)
1272                                 die_errno(_("unable to read config file '%s'"),
1273                                           location_opts.source.file);
1274                         else
1275                                 die(_("error processing config file(s)"));
1276                 }
1277         }
1278         else if (actions == ACTION_EDIT) {
1279                 ret = show_editor(&location_opts);
1280         }
1281         else if (actions == ACTION_SET) {
1282                 check_write(&location_opts.source);
1283                 check_argc(argc, 2, 2);
1284                 value = normalize_value(argv[0], argv[1], display_opts.type, &default_kvi);
1285                 ret = git_config_set_in_file_gently(location_opts.source.file, argv[0], comment, value);
1286                 if (ret == CONFIG_NOTHING_SET)
1287                         error(_("cannot overwrite multiple values with a single value\n"
1288                         "       Use a regexp, --add or --replace-all to change %s."), argv[0]);
1289         }
1290         else if (actions == ACTION_SET_ALL) {
1291                 check_write(&location_opts.source);
1292                 check_argc(argc, 2, 3);
1293                 value = normalize_value(argv[0], argv[1], display_opts.type, &default_kvi);
1294                 ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1295                                                              argv[0], value, argv[2],
1296                                                              comment, flags);
1297         }
1298         else if (actions == ACTION_ADD) {
1299                 check_write(&location_opts.source);
1300                 check_argc(argc, 2, 2);
1301                 value = normalize_value(argv[0], argv[1], display_opts.type, &default_kvi);
1302                 ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1303                                                              argv[0], value,
1304                                                              CONFIG_REGEX_NONE,
1305                                                              comment, flags);
1306         }
1307         else if (actions == ACTION_REPLACE_ALL) {
1308                 check_write(&location_opts.source);
1309                 check_argc(argc, 2, 3);
1310                 value = normalize_value(argv[0], argv[1], display_opts.type, &default_kvi);
1311                 ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1312                                                              argv[0], value, argv[2],
1313                                                              comment, flags | CONFIG_FLAGS_MULTI_REPLACE);
1314         }
1315         else if (actions == ACTION_GET) {
1316                 check_argc(argc, 1, 2);
1317                 ret = get_value(&location_opts, &display_opts, argv[0], argv[1],
1318                                 0, flags);
1319         }
1320         else if (actions == ACTION_GET_ALL) {
1321                 check_argc(argc, 1, 2);
1322                 ret = get_value(&location_opts, &display_opts, argv[0], argv[1],
1323                                 GET_VALUE_ALL, flags);
1324         }
1325         else if (actions == ACTION_GET_REGEXP) {
1326                 display_opts.show_keys = 1;
1327                 check_argc(argc, 1, 2);
1328                 ret = get_value(&location_opts, &display_opts, argv[0], argv[1],
1329                                 GET_VALUE_ALL|GET_VALUE_KEY_REGEXP, flags);
1330         }
1331         else if (actions == ACTION_GET_URLMATCH) {
1332                 check_argc(argc, 2, 2);
1333                 ret = get_urlmatch(&location_opts, &display_opts, argv[0], argv[1]);
1334         }
1335         else if (actions == ACTION_UNSET) {
1336                 check_write(&location_opts.source);
1337                 check_argc(argc, 1, 2);
1338                 if (argc == 2)
1339                         ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1340                                                                      argv[0], NULL, argv[1],
1341                                                                      NULL, flags);
1342                 else
1343                         ret = git_config_set_in_file_gently(location_opts.source.file,
1344                                                             argv[0], NULL, NULL);
1345         }
1346         else if (actions == ACTION_UNSET_ALL) {
1347                 check_write(&location_opts.source);
1348                 check_argc(argc, 1, 2);
1349                 ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1350                                                              argv[0], NULL, argv[1],
1351                                                              NULL, flags | CONFIG_FLAGS_MULTI_REPLACE);
1352         }
1353         else if (actions == ACTION_RENAME_SECTION) {
1354                 check_write(&location_opts.source);
1355                 check_argc(argc, 2, 2);
1356                 ret = git_config_rename_section_in_file(location_opts.source.file,
1357                                                         argv[0], argv[1]);
1358                 if (ret < 0)
1359                         goto out;
1360                 else if (!ret)
1361                         die(_("no such section: %s"), argv[0]);
1362                 else
1363                         ret = 0;
1364         }
1365         else if (actions == ACTION_REMOVE_SECTION) {
1366                 check_write(&location_opts.source);
1367                 check_argc(argc, 1, 1);
1368                 ret = git_config_rename_section_in_file(location_opts.source.file,
1369                                                         argv[0], NULL);
1370                 if (ret < 0)
1371                         goto out;
1372                 else if (!ret)
1373                         die(_("no such section: %s"), argv[0]);
1374                 else
1375                         ret = 0;
1376         }
1377         else if (actions == ACTION_GET_COLOR) {
1378                 check_argc(argc, 1, 2);
1379                 get_color(&location_opts, argv[0], argv[1]);
1380         }
1381         else if (actions == ACTION_GET_COLORBOOL) {
1382                 check_argc(argc, 1, 2);
1383                 if (argc == 2)
1384                         color_stdout_is_tty = git_config_bool("command line", argv[1]);
1385                 ret = get_colorbool(&location_opts, argv[0], argc == 2);
1386         }
1387
1388 out:
1389         location_options_release(&location_opts);
1390         free(comment);
1391         free(value);
1392         return ret;
1393 }
1394
1395 int cmd_config(int argc, const char **argv, const char *prefix)
1396 {
1397         parse_opt_subcommand_fn *subcommand = NULL;
1398         struct option subcommand_opts[] = {
1399                 OPT_SUBCOMMAND("list", &subcommand, cmd_config_list),
1400                 OPT_SUBCOMMAND("get", &subcommand, cmd_config_get),
1401                 OPT_SUBCOMMAND("set", &subcommand, cmd_config_set),
1402                 OPT_SUBCOMMAND("unset", &subcommand, cmd_config_unset),
1403                 OPT_SUBCOMMAND("rename-section", &subcommand, cmd_config_rename_section),
1404                 OPT_SUBCOMMAND("remove-section", &subcommand, cmd_config_remove_section),
1405                 OPT_SUBCOMMAND("edit", &subcommand, cmd_config_edit),
1406                 OPT_END(),
1407         };
1408
1409         /*
1410          * This is somewhat hacky: we first parse the command line while
1411          * keeping all args intact in order to determine whether a subcommand
1412          * has been specified. If so, we re-parse it a second time, but this
1413          * time we drop KEEP_ARGV0. This is so that we don't munge the command
1414          * line in case no subcommand was given, which would otherwise confuse
1415          * us when parsing the legacy-style modes that don't use subcommands.
1416          */
1417         argc = parse_options(argc, argv, prefix, subcommand_opts, builtin_config_usage,
1418                              PARSE_OPT_SUBCOMMAND_OPTIONAL|PARSE_OPT_KEEP_ARGV0|PARSE_OPT_KEEP_UNKNOWN_OPT);
1419         if (subcommand) {
1420                 argc = parse_options(argc, argv, prefix, subcommand_opts, builtin_config_usage,
1421                        PARSE_OPT_SUBCOMMAND_OPTIONAL|PARSE_OPT_KEEP_UNKNOWN_OPT);
1422                 return subcommand(argc, argv, prefix);
1423         }
1424
1425         return cmd_config_actions(argc, argv, prefix);
1426 }