builtin/config.c

   1 #include "builtin.h"
   2 #include "abspath.h"
   3 #include "alloc.h"
   4 #include "config.h"
   5 #include "color.h"
   6 #include "editor.h"
   7 #include "environment.h"
   8 #include "gettext.h"
   9 #include "ident.h"
  10 #include "parse-options.h"
  11 #include "urlmatch.h"
  12 #include "quote.h"
  13 #include "setup.h"
  14 #include "worktree.h"
  15 #include "wrapper.h"
  16
  17 static const char *const builtin_config_usage[] = {
  18         N_("git config [<options>]"),
  19         NULL
  20 };
  21
  22 static char *key;
  23 static regex_t *key_regexp;
  24 static const char *value_pattern;
  25 static regex_t *regexp;
  26 static int show_keys;
  27 static int omit_values;
  28 static int use_key_regexp;
  29 static int do_all;
  30 static int do_not_match;
  31 static char delim = '=';
  32 static char key_delim = ' ';
  33 static char term = '\n';
  34
  35 static int use_global_config, use_system_config, use_local_config;
  36 static int use_worktree_config;
  37 static struct git_config_source given_config_source;
  38 static int actions, type;
  39 static char *default_value;
  40 static int end_nul;
  41 static int respect_includes_opt = -1;
  42 static struct config_options config_options;
  43 static int show_origin;
  44 static int show_scope;
  45 static int fixed_value;
  46
  47 #define ACTION_GET (1<<0)
  48 #define ACTION_GET_ALL (1<<1)
  49 #define ACTION_GET_REGEXP (1<<2)
  50 #define ACTION_REPLACE_ALL (1<<3)
  51 #define ACTION_ADD (1<<4)
  52 #define ACTION_UNSET (1<<5)
  53 #define ACTION_UNSET_ALL (1<<6)
  54 #define ACTION_RENAME_SECTION (1<<7)
  55 #define ACTION_REMOVE_SECTION (1<<8)
  56 #define ACTION_LIST (1<<9)
  57 #define ACTION_EDIT (1<<10)
  58 #define ACTION_SET (1<<11)
  59 #define ACTION_SET_ALL (1<<12)
  60 #define ACTION_GET_COLOR (1<<13)
  61 #define ACTION_GET_COLORBOOL (1<<14)
  62 #define ACTION_GET_URLMATCH (1<<15)
  63
  64 /*
  65  * The actions "ACTION_LIST | ACTION_GET_*" which may produce more than
  66  * one line of output and which should therefore be paged.
  67  */
  68 #define PAGING_ACTIONS (ACTION_LIST | ACTION_GET_ALL | \
  69                         ACTION_GET_REGEXP | ACTION_GET_URLMATCH)
  70
  71 #define TYPE_BOOL               1
  72 #define TYPE_INT                2
  73 #define TYPE_BOOL_OR_INT        3
  74 #define TYPE_PATH               4
  75 #define TYPE_EXPIRY_DATE        5
  76 #define TYPE_COLOR              6
  77 #define TYPE_BOOL_OR_STR        7
  78
  79 #define OPT_CALLBACK_VALUE(s, l, v, h, i) \
  80         { OPTION_CALLBACK, (s), (l), (v), NULL, (h), PARSE_OPT_NOARG | \
  81         PARSE_OPT_NONEG, option_parse_type, (i) }
  82
  83 static NORETURN void usage_builtin_config(void);
  84
  85 static int option_parse_type(const struct option *opt, const char *arg,
  86                              int unset)
  87 {
  88         int new_type, *to_type;
  89
  90         if (unset) {
  91                 *((int *) opt->value) = 0;
  92                 return 0;
  93         }
  94
  95         /*
  96          * To support '--<type>' style flags, begin with new_type equal to
  97          * opt->defval.
  98          */
  99         new_type = opt->defval;
 100         if (!new_type) {
 101                 if (!strcmp(arg, "bool"))
 102                         new_type = TYPE_BOOL;
 103                 else if (!strcmp(arg, "int"))
 104                         new_type = TYPE_INT;
 105                 else if (!strcmp(arg, "bool-or-int"))
 106                         new_type = TYPE_BOOL_OR_INT;
 107                 else if (!strcmp(arg, "bool-or-str"))
 108                         new_type = TYPE_BOOL_OR_STR;
 109                 else if (!strcmp(arg, "path"))
 110                         new_type = TYPE_PATH;
 111                 else if (!strcmp(arg, "expiry-date"))
 112                         new_type = TYPE_EXPIRY_DATE;
 113                 else if (!strcmp(arg, "color"))
 114                         new_type = TYPE_COLOR;
 115                 else
 116                         die(_("unrecognized --type argument, %s"), arg);
 117         }
 118
 119         to_type = opt->value;
 120         if (*to_type && *to_type != new_type) {
 121                 /*
 122                  * Complain when there is a new type not equal to the old type.
 123                  * This allows for combinations like '--int --type=int' and
 124                  * '--type=int --type=int', but disallows ones like '--type=bool
 125                  * --int' and '--type=bool
 126                  * --type=int'.
 127                  */
 128                 error(_("only one type at a time"));
 129                 usage_builtin_config();
 130         }
 131         *to_type = new_type;
 132
 133         return 0;
 134 }
 135
 136 static struct option builtin_config_options[] = {
 137         OPT_GROUP(N_("Config file location")),
 138         OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
 139         OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
 140         OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
 141         OPT_BOOL(0, "worktree", &use_worktree_config, N_("use per-worktree config file")),
 142         OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
 143         OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
 144         OPT_GROUP(N_("Action")),
 145         OPT_BIT(0, "get", &actions, N_("get value: name [value-pattern]"), ACTION_GET),
 146         OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-pattern]"), ACTION_GET_ALL),
 147         OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-pattern]"), ACTION_GET_REGEXP),
 148         OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
 149         OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value-pattern]"), ACTION_REPLACE_ALL),
 150         OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
 151         OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-pattern]"), ACTION_UNSET),
 152         OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-pattern]"), ACTION_UNSET_ALL),
 153         OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
 154         OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
 155         OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
 156         OPT_BOOL(0, "fixed-value", &fixed_value, N_("use string equality when comparing values to 'value-pattern'")),
 157         OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
 158         OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
 159         OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
 160         OPT_GROUP(N_("Type")),
 161         OPT_CALLBACK('t', "type", &type, N_("type"), N_("value is given this type"), option_parse_type),
 162         OPT_CALLBACK_VALUE(0, "bool", &type, N_("value is \"true\" or \"false\""), TYPE_BOOL),
 163         OPT_CALLBACK_VALUE(0, "int", &type, N_("value is decimal number"), TYPE_INT),
 164         OPT_CALLBACK_VALUE(0, "bool-or-int", &type, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
 165         OPT_CALLBACK_VALUE(0, "bool-or-str", &type, N_("value is --bool or string"), TYPE_BOOL_OR_STR),
 166         OPT_CALLBACK_VALUE(0, "path", &type, N_("value is a path (file or directory name)"), TYPE_PATH),
 167         OPT_CALLBACK_VALUE(0, "expiry-date", &type, N_("value is an expiry date"), TYPE_EXPIRY_DATE),
 168         OPT_GROUP(N_("Other")),
 169         OPT_BOOL('z', "null", &end_nul, N_("terminate values with NUL byte")),
 170         OPT_BOOL(0, "name-only", &omit_values, N_("show variable names only")),
 171         OPT_BOOL(0, "includes", &respect_includes_opt, N_("respect include directives on lookup")),
 172         OPT_BOOL(0, "show-origin", &show_origin, N_("show origin of config (file, standard input, blob, command line)")),
 173         OPT_BOOL(0, "show-scope", &show_scope, N_("show scope of config (worktree, local, global, system, command)")),
 174         OPT_STRING(0, "default", &default_value, N_("value"), N_("with --get, use default value when missing entry")),
 175         OPT_END(),
 176 };
 177
 178 static NORETURN void usage_builtin_config(void)
 179 {
 180         usage_with_options(builtin_config_usage, builtin_config_options);
 181 }
 182
 183 static void check_argc(int argc, int min, int max)
 184 {
 185         if (argc >= min && argc <= max)
 186                 return;
 187         if (min == max)
 188                 error(_("wrong number of arguments, should be %d"), min);
 189         else
 190                 error(_("wrong number of arguments, should be from %d to %d"),
 191                       min, max);
 192         usage_builtin_config();
 193 }
 194
 195 static void show_config_origin(struct strbuf *buf)
 196 {
 197         const char term = end_nul ? '\0' : '\t';
 198
 199         strbuf_addstr(buf, current_config_origin_type());
 200         strbuf_addch(buf, ':');
 201         if (end_nul)
 202                 strbuf_addstr(buf, current_config_name());
 203         else
 204                 quote_c_style(current_config_name(), buf, NULL, 0);
 205         strbuf_addch(buf, term);
 206 }
 207
 208 static void show_config_scope(struct strbuf *buf)
 209 {
 210         const char term = end_nul ? '\0' : '\t';
 211         const char *scope = config_scope_name(current_config_scope());
 212
 213         strbuf_addstr(buf, N_(scope));
 214         strbuf_addch(buf, term);
 215 }
 216
 217 static int show_all_config(const char *key_, const char *value_,
 218                            void *cb UNUSED)
 219 {
 220         if (show_origin || show_scope) {
 221                 struct strbuf buf = STRBUF_INIT;
 222                 if (show_scope)
 223                         show_config_scope(&buf);
 224                 if (show_origin)
 225                         show_config_origin(&buf);
 226                 /* Use fwrite as "buf" can contain \0's if "end_null" is set. */
 227                 fwrite(buf.buf, 1, buf.len, stdout);
 228                 strbuf_release(&buf);
 229         }
 230         if (!omit_values && value_)
 231                 printf("%s%c%s%c", key_, delim, value_, term);
 232         else
 233                 printf("%s%c", key_, term);
 234         return 0;
 235 }
 236
 237 struct strbuf_list {
 238         struct strbuf *items;
 239         int nr;
 240         int alloc;
 241 };
 242
 243 static int format_config(struct strbuf *buf, const char *key_, const char *value_)
 244 {
 245         if (show_scope)
 246                 show_config_scope(buf);
 247         if (show_origin)
 248                 show_config_origin(buf);
 249         if (show_keys)
 250                 strbuf_addstr(buf, key_);
 251         if (!omit_values) {
 252                 if (show_keys)
 253                         strbuf_addch(buf, key_delim);
 254
 255                 if (type == TYPE_INT)
 256                         strbuf_addf(buf, "%"PRId64,
 257                                     git_config_int64(key_, value_ ? value_ : ""));
 258                 else if (type == TYPE_BOOL)
 259                         strbuf_addstr(buf, git_config_bool(key_, value_) ?
 260                                       "true" : "false");
 261                 else if (type == TYPE_BOOL_OR_INT) {
 262                         int is_bool, v;
 263                         v = git_config_bool_or_int(key_, value_, &is_bool);
 264                         if (is_bool)
 265                                 strbuf_addstr(buf, v ? "true" : "false");
 266                         else
 267                                 strbuf_addf(buf, "%d", v);
 268                 } else if (type == TYPE_BOOL_OR_STR) {
 269                         int v = git_parse_maybe_bool(value_);
 270                         if (v < 0)
 271                                 strbuf_addstr(buf, value_);
 272                         else
 273                                 strbuf_addstr(buf, v ? "true" : "false");
 274                 } else if (type == TYPE_PATH) {
 275                         const char *v;
 276                         if (git_config_pathname(&v, key_, value_) < 0)
 277                                 return -1;
 278                         strbuf_addstr(buf, v);
 279                         free((char *)v);
 280                 } else if (type == TYPE_EXPIRY_DATE) {
 281                         timestamp_t t;
 282                         if (git_config_expiry_date(&t, key_, value_) < 0)
 283                                 return -1;
 284                         strbuf_addf(buf, "%"PRItime, t);
 285                 } else if (type == TYPE_COLOR) {
 286                         char v[COLOR_MAXLEN];
 287                         if (git_config_color(v, key_, value_) < 0)
 288                                 return -1;
 289                         strbuf_addstr(buf, v);
 290                 } else if (value_) {
 291                         strbuf_addstr(buf, value_);
 292                 } else {
 293                         /* Just show the key name; back out delimiter */
 294                         if (show_keys)
 295                                 strbuf_setlen(buf, buf->len - 1);
 296                 }
 297         }
 298         strbuf_addch(buf, term);
 299         return 0;
 300 }
 301
 302 static int collect_config(const char *key_, const char *value_, void *cb)
 303 {
 304         struct strbuf_list *values = cb;
 305
 306         if (!use_key_regexp && strcmp(key_, key))
 307                 return 0;
 308         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 309                 return 0;
 310         if (fixed_value && strcmp(value_pattern, (value_?value_:"")))
 311                 return 0;
 312         if (regexp != NULL &&
 313             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 314                 return 0;
 315
 316         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 317         strbuf_init(&values->items[values->nr], 0);
 318
 319         return format_config(&values->items[values->nr++], key_, value_);
 320 }
 321
 322 static int get_value(const char *key_, const char *regex_, unsigned flags)
 323 {
 324         int ret = CONFIG_GENERIC_ERROR;
 325         struct strbuf_list values = {NULL};
 326         int i;
 327
 328         if (use_key_regexp) {
 329                 char *tl;
 330
 331                 /*
 332                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 333                  * work for more complex patterns like "^[^.]*Foo.*bar".
 334                  * Perhaps we should deprecate this altogether someday.
 335                  */
 336
 337                 key = xstrdup(key_);
 338                 for (tl = key + strlen(key) - 1;
 339                      tl >= key && *tl != '.';
 340                      tl--)
 341                         *tl = tolower(*tl);
 342                 for (tl = key; *tl && *tl != '.'; tl++)
 343                         *tl = tolower(*tl);
 344
 345                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 346                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 347                         error(_("invalid key pattern: %s"), key_);
 348                         FREE_AND_NULL(key_regexp);
 349                         ret = CONFIG_INVALID_PATTERN;
 350                         goto free_strings;
 351                 }
 352         } else {
 353                 if (git_config_parse_key(key_, &key, NULL)) {
 354                         ret = CONFIG_INVALID_KEY;
 355                         goto free_strings;
 356                 }
 357         }
 358
 359         if (regex_ && (flags & CONFIG_FLAGS_FIXED_VALUE))
 360                 value_pattern = regex_;
 361         else if (regex_) {
 362                 if (regex_[0] == '!') {
 363                         do_not_match = 1;
 364                         regex_++;
 365                 }
 366
 367                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 368                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 369                         error(_("invalid pattern: %s"), regex_);
 370                         FREE_AND_NULL(regexp);
 371                         ret = CONFIG_INVALID_PATTERN;
 372                         goto free_strings;
 373                 }
 374         }
 375
 376         config_with_options(collect_config, &values,
 377                             &given_config_source, &config_options);
 378
 379         if (!values.nr && default_value) {
 380                 struct strbuf *item;
 381                 ALLOC_GROW(values.items, values.nr + 1, values.alloc);
 382                 item = &values.items[values.nr++];
 383                 strbuf_init(item, 0);
 384                 if (format_config(item, key_, default_value) < 0)
 385                         die(_("failed to format default config value: %s"),
 386                                 default_value);
 387         }
 388
 389         ret = !values.nr;
 390
 391         for (i = 0; i < values.nr; i++) {
 392                 struct strbuf *buf = values.items + i;
 393                 if (do_all || i == values.nr - 1)
 394                         fwrite(buf->buf, 1, buf->len, stdout);
 395                 strbuf_release(buf);
 396         }
 397         free(values.items);
 398
 399 free_strings:
 400         free(key);
 401         if (key_regexp) {
 402                 regfree(key_regexp);
 403                 free(key_regexp);
 404         }
 405         if (regexp) {
 406                 regfree(regexp);
 407                 free(regexp);
 408         }
 409
 410         return ret;
 411 }
 412
 413 static char *normalize_value(const char *key, const char *value)
 414 {
 415         if (!value)
 416                 return NULL;
 417
 418         if (type == 0 || type == TYPE_PATH || type == TYPE_EXPIRY_DATE)
 419                 /*
 420                  * We don't do normalization for TYPE_PATH here: If
 421                  * the path is like ~/foobar/, we prefer to store
 422                  * "~/foobar/" in the config file, and to expand the ~
 423                  * when retrieving the value.
 424                  * Also don't do normalization for expiry dates.
 425                  */
 426                 return xstrdup(value);
 427         if (type == TYPE_INT)
 428                 return xstrfmt("%"PRId64, git_config_int64(key, value));
 429         if (type == TYPE_BOOL)
 430                 return xstrdup(git_config_bool(key, value) ?  "true" : "false");
 431         if (type == TYPE_BOOL_OR_INT) {
 432                 int is_bool, v;
 433                 v = git_config_bool_or_int(key, value, &is_bool);
 434                 if (!is_bool)
 435                         return xstrfmt("%d", v);
 436                 else
 437                         return xstrdup(v ? "true" : "false");
 438         }
 439         if (type == TYPE_BOOL_OR_STR) {
 440                 int v = git_parse_maybe_bool(value);
 441                 if (v < 0)
 442                         return xstrdup(value);
 443                 else
 444                         return xstrdup(v ? "true" : "false");
 445         }
 446         if (type == TYPE_COLOR) {
 447                 char v[COLOR_MAXLEN];
 448                 if (git_config_color(v, key, value))
 449                         die(_("cannot parse color '%s'"), value);
 450
 451                 /*
 452                  * The contents of `v` now contain an ANSI escape
 453                  * sequence, not suitable for including within a
 454                  * configuration file. Treat the above as a
 455                  * "sanity-check", and return the given value, which we
 456                  * know is representable as valid color code.
 457                  */
 458                 return xstrdup(value);
 459         }
 460
 461         BUG("cannot normalize type %d", type);
 462 }
 463
 464 static int get_color_found;
 465 static const char *get_color_slot;
 466 static const char *get_colorbool_slot;
 467 static char parsed_color[COLOR_MAXLEN];
 468
 469 static int git_get_color_config(const char *var, const char *value,
 470                                 void *cb UNUSED)
 471 {
 472         if (!strcmp(var, get_color_slot)) {
 473                 if (!value)
 474                         config_error_nonbool(var);
 475                 if (color_parse(value, parsed_color) < 0)
 476                         return -1;
 477                 get_color_found = 1;
 478         }
 479         return 0;
 480 }
 481
 482 static void get_color(const char *var, const char *def_color)
 483 {
 484         get_color_slot = var;
 485         get_color_found = 0;
 486         parsed_color[0] = '\0';
 487         config_with_options(git_get_color_config, NULL,
 488                             &given_config_source, &config_options);
 489
 490         if (!get_color_found && def_color) {
 491                 if (color_parse(def_color, parsed_color) < 0)
 492                         die(_("unable to parse default color value"));
 493         }
 494
 495         fputs(parsed_color, stdout);
 496 }
 497
 498 static int get_colorbool_found;
 499 static int get_diff_color_found;
 500 static int get_color_ui_found;
 501 static int git_get_colorbool_config(const char *var, const char *value,
 502                                     void *data UNUSED)
 503 {
 504         if (!strcmp(var, get_colorbool_slot))
 505                 get_colorbool_found = git_config_colorbool(var, value);
 506         else if (!strcmp(var, "diff.color"))
 507                 get_diff_color_found = git_config_colorbool(var, value);
 508         else if (!strcmp(var, "color.ui"))
 509                 get_color_ui_found = git_config_colorbool(var, value);
 510         return 0;
 511 }
 512
 513 static int get_colorbool(const char *var, int print)
 514 {
 515         get_colorbool_slot = var;
 516         get_colorbool_found = -1;
 517         get_diff_color_found = -1;
 518         get_color_ui_found = -1;
 519         config_with_options(git_get_colorbool_config, NULL,
 520                             &given_config_source, &config_options);
 521
 522         if (get_colorbool_found < 0) {
 523                 if (!strcmp(get_colorbool_slot, "color.diff"))
 524                         get_colorbool_found = get_diff_color_found;
 525                 if (get_colorbool_found < 0)
 526                         get_colorbool_found = get_color_ui_found;
 527         }
 528
 529         if (get_colorbool_found < 0)
 530                 /* default value if none found in config */
 531                 get_colorbool_found = GIT_COLOR_AUTO;
 532
 533         get_colorbool_found = want_color(get_colorbool_found);
 534
 535         if (print) {
 536                 printf("%s\n", get_colorbool_found ? "true" : "false");
 537                 return 0;
 538         } else
 539                 return get_colorbool_found ? 0 : 1;
 540 }
 541
 542 static void check_write(void)
 543 {
 544         if (!given_config_source.file && !startup_info->have_repository)
 545                 die(_("not in a git directory"));
 546
 547         if (given_config_source.use_stdin)
 548                 die(_("writing to stdin is not supported"));
 549
 550         if (given_config_source.blob)
 551                 die(_("writing config blobs is not supported"));
 552 }
 553
 554 struct urlmatch_current_candidate_value {
 555         char value_is_null;
 556         struct strbuf value;
 557 };
 558
 559 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
 560 {
 561         struct string_list *values = cb;
 562         struct string_list_item *item = string_list_insert(values, var);
 563         struct urlmatch_current_candidate_value *matched = item->util;
 564
 565         if (!matched) {
 566                 matched = xmalloc(sizeof(*matched));
 567                 strbuf_init(&matched->value, 0);
 568                 item->util = matched;
 569         } else {
 570                 strbuf_reset(&matched->value);
 571         }
 572
 573         if (value) {
 574                 strbuf_addstr(&matched->value, value);
 575                 matched->value_is_null = 0;
 576         } else {
 577                 matched->value_is_null = 1;
 578         }
 579         return 0;
 580 }
 581
 582 static int get_urlmatch(const char *var, const char *url)
 583 {
 584         int ret;
 585         char *section_tail;
 586         struct string_list_item *item;
 587         struct urlmatch_config config = URLMATCH_CONFIG_INIT;
 588         struct string_list values = STRING_LIST_INIT_DUP;
 589
 590         config.collect_fn = urlmatch_collect_fn;
 591         config.cascade_fn = NULL;
 592         config.cb = &values;
 593
 594         if (!url_normalize(url, &config.url))
 595                 die("%s", config.url.err);
 596
 597         config.section = xstrdup_tolower(var);
 598         section_tail = strchr(config.section, '.');
 599         if (section_tail) {
 600                 *section_tail = '\0';
 601                 config.key = section_tail + 1;
 602                 show_keys = 0;
 603         } else {
 604                 config.key = NULL;
 605                 show_keys = 1;
 606         }
 607
 608         config_with_options(urlmatch_config_entry, &config,
 609                             &given_config_source, &config_options);
 610
 611         ret = !values.nr;
 612
 613         for_each_string_list_item(item, &values) {
 614                 struct urlmatch_current_candidate_value *matched = item->util;
 615                 struct strbuf buf = STRBUF_INIT;
 616
 617                 format_config(&buf, item->string,
 618                               matched->value_is_null ? NULL : matched->value.buf);
 619                 fwrite(buf.buf, 1, buf.len, stdout);
 620                 strbuf_release(&buf);
 621
 622                 strbuf_release(&matched->value);
 623         }
 624         urlmatch_config_release(&config);
 625         string_list_clear(&values, 1);
 626         free(config.url.url);
 627
 628         free((void *)config.section);
 629         return ret;
 630 }
 631
 632 static char *default_user_config(void)
 633 {
 634         struct strbuf buf = STRBUF_INIT;
 635         strbuf_addf(&buf,
 636                     _("# This is Git's per-user configuration file.\n"
 637                       "[user]\n"
 638                       "# Please adapt and uncomment the following lines:\n"
 639                       "#        name = %s\n"
 640                       "#        email = %s\n"),
 641                     ident_default_name(),
 642                     ident_default_email());
 643         return strbuf_detach(&buf, NULL);
 644 }
 645
 646 int cmd_config(int argc, const char **argv, const char *prefix)
 647 {
 648         int nongit = !startup_info->have_repository;
 649         char *value = NULL;
 650         int flags = 0;
 651         int ret = 0;
 652
 653         given_config_source.file = xstrdup_or_null(getenv(CONFIG_ENVIRONMENT));
 654
 655         argc = parse_options(argc, argv, prefix, builtin_config_options,
 656                              builtin_config_usage,
 657                              PARSE_OPT_STOP_AT_NON_OPTION);
 658
 659         if (use_global_config + use_system_config + use_local_config +
 660             use_worktree_config +
 661             !!given_config_source.file + !!given_config_source.blob > 1) {
 662                 error(_("only one config file at a time"));
 663                 usage_builtin_config();
 664         }
 665
 666         if (nongit) {
 667                 if (use_local_config)
 668                         die(_("--local can only be used inside a git repository"));
 669                 if (given_config_source.blob)
 670                         die(_("--blob can only be used inside a git repository"));
 671                 if (use_worktree_config)
 672                         die(_("--worktree can only be used inside a git repository"));
 673
 674         }
 675
 676         if (given_config_source.file &&
 677                         !strcmp(given_config_source.file, "-")) {
 678                 given_config_source.file = NULL;
 679                 given_config_source.use_stdin = 1;
 680                 given_config_source.scope = CONFIG_SCOPE_COMMAND;
 681         }
 682
 683         if (use_global_config) {
 684                 char *user_config, *xdg_config;
 685
 686                 git_global_config(&user_config, &xdg_config);
 687                 if (!user_config)
 688                         /*
 689                          * It is unknown if HOME/.gitconfig exists, so
 690                          * we do not know if we should write to XDG
 691                          * location; error out even if XDG_CONFIG_HOME
 692                          * is set and points at a sane location.
 693                          */
 694                         die(_("$HOME not set"));
 695
 696                 given_config_source.scope = CONFIG_SCOPE_GLOBAL;
 697
 698                 if (access_or_warn(user_config, R_OK, 0) &&
 699                     xdg_config && !access_or_warn(xdg_config, R_OK, 0)) {
 700                         given_config_source.file = xdg_config;
 701                         free(user_config);
 702                 } else {
 703                         given_config_source.file = user_config;
 704                         free(xdg_config);
 705                 }
 706         }
 707         else if (use_system_config) {
 708                 given_config_source.file = git_system_config();
 709                 given_config_source.scope = CONFIG_SCOPE_SYSTEM;
 710         } else if (use_local_config) {
 711                 given_config_source.file = git_pathdup("config");
 712                 given_config_source.scope = CONFIG_SCOPE_LOCAL;
 713         } else if (use_worktree_config) {
 714                 struct worktree **worktrees = get_worktrees();
 715                 if (repository_format_worktree_config)
 716                         given_config_source.file = git_pathdup("config.worktree");
 717                 else if (worktrees[0] && worktrees[1])
 718                         die(_("--worktree cannot be used with multiple "
 719                               "working trees unless the config\n"
 720                               "extension worktreeConfig is enabled. "
 721                               "Please read \"CONFIGURATION FILE\"\n"
 722                               "section in \"git help worktree\" for details"));
 723                 else
 724                         given_config_source.file = git_pathdup("config");
 725                 given_config_source.scope = CONFIG_SCOPE_LOCAL;
 726                 free_worktrees(worktrees);
 727         } else if (given_config_source.file) {
 728                 if (!is_absolute_path(given_config_source.file) && prefix)
 729                         given_config_source.file =
 730                                 prefix_filename(prefix, given_config_source.file);
 731                 given_config_source.scope = CONFIG_SCOPE_COMMAND;
 732         } else if (given_config_source.blob) {
 733                 given_config_source.scope = CONFIG_SCOPE_COMMAND;
 734         }
 735
 736
 737         if (respect_includes_opt == -1)
 738                 config_options.respect_includes = !given_config_source.file;
 739         else
 740                 config_options.respect_includes = respect_includes_opt;
 741         if (!nongit) {
 742                 config_options.commondir = get_git_common_dir();
 743                 config_options.git_dir = get_git_dir();
 744         }
 745
 746         if (end_nul) {
 747                 term = '\0';
 748                 delim = '\n';
 749                 key_delim = '\n';
 750         }
 751
 752         if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && type) {
 753                 error(_("--get-color and variable type are incoherent"));
 754                 usage_builtin_config();
 755         }
 756
 757         if (HAS_MULTI_BITS(actions)) {
 758                 error(_("only one action at a time"));
 759                 usage_builtin_config();
 760         }
 761         if (actions == 0)
 762                 switch (argc) {
 763                 case 1: actions = ACTION_GET; break;
 764                 case 2: actions = ACTION_SET; break;
 765                 case 3: actions = ACTION_SET_ALL; break;
 766                 default:
 767                         usage_builtin_config();
 768                 }
 769         if (omit_values &&
 770             !(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
 771                 error(_("--name-only is only applicable to --list or --get-regexp"));
 772                 usage_builtin_config();
 773         }
 774
 775         if (show_origin && !(actions &
 776                 (ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
 777                 error(_("--show-origin is only applicable to --get, --get-all, "
 778                         "--get-regexp, and --list"));
 779                 usage_builtin_config();
 780         }
 781
 782         if (default_value && !(actions & ACTION_GET)) {
 783                 error(_("--default is only applicable to --get"));
 784                 usage_builtin_config();
 785         }
 786
 787         /* check usage of --fixed-value */
 788         if (fixed_value) {
 789                 int allowed_usage = 0;
 790
 791                 switch (actions) {
 792                 /* git config --get <name> <value-pattern> */
 793                 case ACTION_GET:
 794                 /* git config --get-all <name> <value-pattern> */
 795                 case ACTION_GET_ALL:
 796                 /* git config --get-regexp <name-pattern> <value-pattern> */
 797                 case ACTION_GET_REGEXP:
 798                 /* git config --unset <name> <value-pattern> */
 799                 case ACTION_UNSET:
 800                 /* git config --unset-all <name> <value-pattern> */
 801                 case ACTION_UNSET_ALL:
 802                         allowed_usage = argc > 1 && !!argv[1];
 803                         break;
 804
 805                 /* git config <name> <value> <value-pattern> */
 806                 case ACTION_SET_ALL:
 807                 /* git config --replace-all <name> <value> <value-pattern> */
 808                 case ACTION_REPLACE_ALL:
 809                         allowed_usage = argc > 2 && !!argv[2];
 810                         break;
 811
 812                 /* other options don't allow --fixed-value */
 813                 }
 814
 815                 if (!allowed_usage) {
 816                         error(_("--fixed-value only applies with 'value-pattern'"));
 817                         usage_builtin_config();
 818                 }
 819
 820                 flags |= CONFIG_FLAGS_FIXED_VALUE;
 821         }
 822
 823         if (actions & PAGING_ACTIONS)
 824                 setup_auto_pager("config", 1);
 825
 826         if (actions == ACTION_LIST) {
 827                 check_argc(argc, 0, 0);
 828                 if (config_with_options(show_all_config, NULL,
 829                                         &given_config_source,
 830                                         &config_options) < 0) {
 831                         if (given_config_source.file)
 832                                 die_errno(_("unable to read config file '%s'"),
 833                                           given_config_source.file);
 834                         else
 835                                 die(_("error processing config file(s)"));
 836                 }
 837         }
 838         else if (actions == ACTION_EDIT) {
 839                 char *config_file;
 840
 841                 check_argc(argc, 0, 0);
 842                 if (!given_config_source.file && nongit)
 843                         die(_("not in a git directory"));
 844                 if (given_config_source.use_stdin)
 845                         die(_("editing stdin is not supported"));
 846                 if (given_config_source.blob)
 847                         die(_("editing blobs is not supported"));
 848                 git_config(git_default_config, NULL);
 849                 config_file = given_config_source.file ?
 850                                 xstrdup(given_config_source.file) :
 851                                 git_pathdup("config");
 852                 if (use_global_config) {
 853                         int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
 854                         if (fd >= 0) {
 855                                 char *content = default_user_config();
 856                                 write_str_in_full(fd, content);
 857                                 free(content);
 858                                 close(fd);
 859                         }
 860                         else if (errno != EEXIST)
 861                                 die_errno(_("cannot create configuration file %s"), config_file);
 862                 }
 863                 launch_editor(config_file, NULL, NULL);
 864                 free(config_file);
 865         }
 866         else if (actions == ACTION_SET) {
 867                 check_write();
 868                 check_argc(argc, 2, 2);
 869                 value = normalize_value(argv[0], argv[1]);
 870                 ret = git_config_set_in_file_gently(given_config_source.file, argv[0], value);
 871                 if (ret == CONFIG_NOTHING_SET)
 872                         error(_("cannot overwrite multiple values with a single value\n"
 873                         "       Use a regexp, --add or --replace-all to change %s."), argv[0]);
 874         }
 875         else if (actions == ACTION_SET_ALL) {
 876                 check_write();
 877                 check_argc(argc, 2, 3);
 878                 value = normalize_value(argv[0], argv[1]);
 879                 ret = git_config_set_multivar_in_file_gently(given_config_source.file,
 880                                                              argv[0], value, argv[2],
 881                                                              flags);
 882         }
 883         else if (actions == ACTION_ADD) {
 884                 check_write();
 885                 check_argc(argc, 2, 2);
 886                 value = normalize_value(argv[0], argv[1]);
 887                 ret = git_config_set_multivar_in_file_gently(given_config_source.file,
 888                                                              argv[0], value,
 889                                                              CONFIG_REGEX_NONE,
 890                                                              flags);
 891         }
 892         else if (actions == ACTION_REPLACE_ALL) {
 893                 check_write();
 894                 check_argc(argc, 2, 3);
 895                 value = normalize_value(argv[0], argv[1]);
 896                 ret = git_config_set_multivar_in_file_gently(given_config_source.file,
 897                                                              argv[0], value, argv[2],
 898                                                              flags | CONFIG_FLAGS_MULTI_REPLACE);
 899         }
 900         else if (actions == ACTION_GET) {
 901                 check_argc(argc, 1, 2);
 902                 return get_value(argv[0], argv[1], flags);
 903         }
 904         else if (actions == ACTION_GET_ALL) {
 905                 do_all = 1;
 906                 check_argc(argc, 1, 2);
 907                 return get_value(argv[0], argv[1], flags);
 908         }
 909         else if (actions == ACTION_GET_REGEXP) {
 910                 show_keys = 1;
 911                 use_key_regexp = 1;
 912                 do_all = 1;
 913                 check_argc(argc, 1, 2);
 914                 return get_value(argv[0], argv[1], flags);
 915         }
 916         else if (actions == ACTION_GET_URLMATCH) {
 917                 check_argc(argc, 2, 2);
 918                 return get_urlmatch(argv[0], argv[1]);
 919         }
 920         else if (actions == ACTION_UNSET) {
 921                 check_write();
 922                 check_argc(argc, 1, 2);
 923                 if (argc == 2)
 924                         return git_config_set_multivar_in_file_gently(given_config_source.file,
 925                                                                       argv[0], NULL, argv[1],
 926                                                                       flags);
 927                 else
 928                         return git_config_set_in_file_gently(given_config_source.file,
 929                                                              argv[0], NULL);
 930         }
 931         else if (actions == ACTION_UNSET_ALL) {
 932                 check_write();
 933                 check_argc(argc, 1, 2);
 934                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 935                                                               argv[0], NULL, argv[1],
 936                                                               flags | CONFIG_FLAGS_MULTI_REPLACE);
 937         }
 938         else if (actions == ACTION_RENAME_SECTION) {
 939                 check_write();
 940                 check_argc(argc, 2, 2);
 941                 ret = git_config_rename_section_in_file(given_config_source.file,
 942                                                         argv[0], argv[1]);
 943                 if (ret < 0)
 944                         return ret;
 945                 else if (!ret)
 946                         die(_("no such section: %s"), argv[0]);
 947                 else
 948                         ret = 0;
 949         }
 950         else if (actions == ACTION_REMOVE_SECTION) {
 951                 check_write();
 952                 check_argc(argc, 1, 1);
 953                 ret = git_config_rename_section_in_file(given_config_source.file,
 954                                                         argv[0], NULL);
 955                 if (ret < 0)
 956                         return ret;
 957                 else if (!ret)
 958                         die(_("no such section: %s"), argv[0]);
 959                 else
 960                         ret = 0;
 961         }
 962         else if (actions == ACTION_GET_COLOR) {
 963                 check_argc(argc, 1, 2);
 964                 get_color(argv[0], argv[1]);
 965         }
 966         else if (actions == ACTION_GET_COLORBOOL) {
 967                 check_argc(argc, 1, 2);
 968                 if (argc == 2)
 969                         color_stdout_is_tty = git_config_bool("command line", argv[1]);
 970                 return get_colorbool(argv[0], argc == 2);
 971         }
 972
 973         free(value);
 974         return ret;
 975 }