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 [<options>]"),
  20         NULL
  21 };
  22
  23 static char *key;
  24 static regex_t *key_regexp;
  25 static const char *value_pattern;
  26 static regex_t *regexp;
  27 static int show_keys;
  28 static int omit_values;
  29 static int use_key_regexp;
  30 static int do_all;
  31 static int do_not_match;
  32 static char delim = '=';
  33 static char key_delim = ' ';
  34 static char term = '\n';
  35
  36 static int use_global_config, use_system_config, use_local_config;
  37 static int use_worktree_config;
  38 static struct git_config_source given_config_source;
  39 static int actions, type;
  40 static char *default_value;
  41 static int end_nul;
  42 static int respect_includes_opt = -1;
  43 static struct config_options config_options;
  44 static int show_origin;
  45 static int show_scope;
  46 static int fixed_value;
  47
  48 #define ACTION_GET (1<<0)
  49 #define ACTION_GET_ALL (1<<1)
  50 #define ACTION_GET_REGEXP (1<<2)
  51 #define ACTION_REPLACE_ALL (1<<3)
  52 #define ACTION_ADD (1<<4)
  53 #define ACTION_UNSET (1<<5)
  54 #define ACTION_UNSET_ALL (1<<6)
  55 #define ACTION_RENAME_SECTION (1<<7)
  56 #define ACTION_REMOVE_SECTION (1<<8)
  57 #define ACTION_LIST (1<<9)
  58 #define ACTION_EDIT (1<<10)
  59 #define ACTION_SET (1<<11)
  60 #define ACTION_SET_ALL (1<<12)
  61 #define ACTION_GET_COLOR (1<<13)
  62 #define ACTION_GET_COLORBOOL (1<<14)
  63 #define ACTION_GET_URLMATCH (1<<15)
  64
  65 /*
  66  * The actions "ACTION_LIST | ACTION_GET_*" which may produce more than
  67  * one line of output and which should therefore be paged.
  68  */
  69 #define PAGING_ACTIONS (ACTION_LIST | ACTION_GET_ALL | \
  70                         ACTION_GET_REGEXP | ACTION_GET_URLMATCH)
  71
  72 #define TYPE_BOOL               1
  73 #define TYPE_INT                2
  74 #define TYPE_BOOL_OR_INT        3
  75 #define TYPE_PATH               4
  76 #define TYPE_EXPIRY_DATE        5
  77 #define TYPE_COLOR              6
  78 #define TYPE_BOOL_OR_STR        7
  79
  80 #define OPT_CALLBACK_VALUE(s, l, v, h, i) \
  81         { OPTION_CALLBACK, (s), (l), (v), NULL, (h), PARSE_OPT_NOARG | \
  82         PARSE_OPT_NONEG, option_parse_type, (i) }
  83
  84 static NORETURN void usage_builtin_config(void);
  85
  86 static int option_parse_type(const struct option *opt, const char *arg,
  87                              int unset)
  88 {
  89         int new_type, *to_type;
  90
  91         if (unset) {
  92                 *((int *) opt->value) = 0;
  93                 return 0;
  94         }
  95
  96         /*
  97          * To support '--<type>' style flags, begin with new_type equal to
  98          * opt->defval.
  99          */
 100         new_type = opt->defval;
 101         if (!new_type) {
 102                 if (!strcmp(arg, "bool"))
 103                         new_type = TYPE_BOOL;
 104                 else if (!strcmp(arg, "int"))
 105                         new_type = TYPE_INT;
 106                 else if (!strcmp(arg, "bool-or-int"))
 107                         new_type = TYPE_BOOL_OR_INT;
 108                 else if (!strcmp(arg, "bool-or-str"))
 109                         new_type = TYPE_BOOL_OR_STR;
 110                 else if (!strcmp(arg, "path"))
 111                         new_type = TYPE_PATH;
 112                 else if (!strcmp(arg, "expiry-date"))
 113                         new_type = TYPE_EXPIRY_DATE;
 114                 else if (!strcmp(arg, "color"))
 115                         new_type = TYPE_COLOR;
 116                 else
 117                         die(_("unrecognized --type argument, %s"), arg);
 118         }
 119
 120         to_type = opt->value;
 121         if (*to_type && *to_type != new_type) {
 122                 /*
 123                  * Complain when there is a new type not equal to the old type.
 124                  * This allows for combinations like '--int --type=int' and
 125                  * '--type=int --type=int', but disallows ones like '--type=bool
 126                  * --int' and '--type=bool
 127                  * --type=int'.
 128                  */
 129                 error(_("only one type at a time"));
 130                 usage_builtin_config();
 131         }
 132         *to_type = new_type;
 133
 134         return 0;
 135 }
 136
 137 static struct option builtin_config_options[] = {
 138         OPT_GROUP(N_("Config file location")),
 139         OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
 140         OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
 141         OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
 142         OPT_BOOL(0, "worktree", &use_worktree_config, N_("use per-worktree config file")),
 143         OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
 144         OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
 145         OPT_GROUP(N_("Action")),
 146         OPT_BIT(0, "get", &actions, N_("get value: name [value-pattern]"), ACTION_GET),
 147         OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-pattern]"), ACTION_GET_ALL),
 148         OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-pattern]"), ACTION_GET_REGEXP),
 149         OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
 150         OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value-pattern]"), ACTION_REPLACE_ALL),
 151         OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
 152         OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-pattern]"), ACTION_UNSET),
 153         OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-pattern]"), ACTION_UNSET_ALL),
 154         OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
 155         OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
 156         OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
 157         OPT_BOOL(0, "fixed-value", &fixed_value, N_("use string equality when comparing values to 'value-pattern'")),
 158         OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
 159         OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
 160         OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
 161         OPT_GROUP(N_("Type")),
 162         OPT_CALLBACK('t', "type", &type, N_("type"), N_("value is given this type"), option_parse_type),
 163         OPT_CALLBACK_VALUE(0, "bool", &type, N_("value is \"true\" or \"false\""), TYPE_BOOL),
 164         OPT_CALLBACK_VALUE(0, "int", &type, N_("value is decimal number"), TYPE_INT),
 165         OPT_CALLBACK_VALUE(0, "bool-or-int", &type, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
 166         OPT_CALLBACK_VALUE(0, "bool-or-str", &type, N_("value is --bool or string"), TYPE_BOOL_OR_STR),
 167         OPT_CALLBACK_VALUE(0, "path", &type, N_("value is a path (file or directory name)"), TYPE_PATH),
 168         OPT_CALLBACK_VALUE(0, "expiry-date", &type, N_("value is an expiry date"), TYPE_EXPIRY_DATE),
 169         OPT_GROUP(N_("Other")),
 170         OPT_BOOL('z', "null", &end_nul, N_("terminate values with NUL byte")),
 171         OPT_BOOL(0, "name-only", &omit_values, N_("show variable names only")),
 172         OPT_BOOL(0, "includes", &respect_includes_opt, N_("respect include directives on lookup")),
 173         OPT_BOOL(0, "show-origin", &show_origin, N_("show origin of config (file, standard input, blob, command line)")),
 174         OPT_BOOL(0, "show-scope", &show_scope, N_("show scope of config (worktree, local, global, system, command)")),
 175         OPT_STRING(0, "default", &default_value, N_("value"), N_("with --get, use default value when missing entry")),
 176         OPT_END(),
 177 };
 178
 179 static NORETURN void usage_builtin_config(void)
 180 {
 181         usage_with_options(builtin_config_usage, builtin_config_options);
 182 }
 183
 184 static void check_argc(int argc, int min, int max)
 185 {
 186         if (argc >= min && argc <= max)
 187                 return;
 188         if (min == max)
 189                 error(_("wrong number of arguments, should be %d"), min);
 190         else
 191                 error(_("wrong number of arguments, should be from %d to %d"),
 192                       min, max);
 193         usage_builtin_config();
 194 }
 195
 196 static void show_config_origin(const struct key_value_info *kvi,
 197                                struct strbuf *buf)
 198 {
 199         const char term = end_nul ? '\0' : '\t';
 200
 201         strbuf_addstr(buf, config_origin_type_name(kvi->origin_type));
 202         strbuf_addch(buf, ':');
 203         if (end_nul)
 204                 strbuf_addstr(buf, kvi->filename ? kvi->filename : "");
 205         else
 206                 quote_c_style(kvi->filename ? kvi->filename : "", buf, NULL, 0);
 207         strbuf_addch(buf, term);
 208 }
 209
 210 static void show_config_scope(const struct key_value_info *kvi,
 211                               struct strbuf *buf)
 212 {
 213         const char term = end_nul ? '\0' : '\t';
 214         const char *scope = config_scope_name(kvi->scope);
 215
 216         strbuf_addstr(buf, N_(scope));
 217         strbuf_addch(buf, term);
 218 }
 219
 220 static int show_all_config(const char *key_, const char *value_,
 221                            const struct config_context *ctx,
 222                            void *cb UNUSED)
 223 {
 224         const struct key_value_info *kvi = ctx->kvi;
 225
 226         if (show_origin || show_scope) {
 227                 struct strbuf buf = STRBUF_INIT;
 228                 if (show_scope)
 229                         show_config_scope(kvi, &buf);
 230                 if (show_origin)
 231                         show_config_origin(kvi, &buf);
 232                 /* Use fwrite as "buf" can contain \0's if "end_null" is set. */
 233                 fwrite(buf.buf, 1, buf.len, stdout);
 234                 strbuf_release(&buf);
 235         }
 236         if (!omit_values && value_)
 237                 printf("%s%c%s%c", key_, delim, value_, term);
 238         else
 239                 printf("%s%c", key_, term);
 240         return 0;
 241 }
 242
 243 struct strbuf_list {
 244         struct strbuf *items;
 245         int nr;
 246         int alloc;
 247 };
 248
 249 static int format_config(struct strbuf *buf, const char *key_,
 250                          const char *value_, const struct key_value_info *kvi)
 251 {
 252         if (show_scope)
 253                 show_config_scope(kvi, buf);
 254         if (show_origin)
 255                 show_config_origin(kvi, buf);
 256         if (show_keys)
 257                 strbuf_addstr(buf, key_);
 258         if (!omit_values) {
 259                 if (show_keys)
 260                         strbuf_addch(buf, key_delim);
 261
 262                 if (type == TYPE_INT)
 263                         strbuf_addf(buf, "%"PRId64,
 264                                     git_config_int64(key_, value_ ? value_ : "", kvi));
 265                 else if (type == TYPE_BOOL)
 266                         strbuf_addstr(buf, git_config_bool(key_, value_) ?
 267                                       "true" : "false");
 268                 else if (type == TYPE_BOOL_OR_INT) {
 269                         int is_bool, v;
 270                         v = git_config_bool_or_int(key_, value_, kvi,
 271                                                    &is_bool);
 272                         if (is_bool)
 273                                 strbuf_addstr(buf, v ? "true" : "false");
 274                         else
 275                                 strbuf_addf(buf, "%d", v);
 276                 } else if (type == TYPE_BOOL_OR_STR) {
 277                         int v = git_parse_maybe_bool(value_);
 278                         if (v < 0)
 279                                 strbuf_addstr(buf, value_);
 280                         else
 281                                 strbuf_addstr(buf, v ? "true" : "false");
 282                 } else if (type == TYPE_PATH) {
 283                         const char *v;
 284                         if (git_config_pathname(&v, key_, value_) < 0)
 285                                 return -1;
 286                         strbuf_addstr(buf, v);
 287                         free((char *)v);
 288                 } else if (type == TYPE_EXPIRY_DATE) {
 289                         timestamp_t t;
 290                         if (git_config_expiry_date(&t, key_, value_) < 0)
 291                                 return -1;
 292                         strbuf_addf(buf, "%"PRItime, t);
 293                 } else if (type == TYPE_COLOR) {
 294                         char v[COLOR_MAXLEN];
 295                         if (git_config_color(v, key_, value_) < 0)
 296                                 return -1;
 297                         strbuf_addstr(buf, v);
 298                 } else if (value_) {
 299                         strbuf_addstr(buf, value_);
 300                 } else {
 301                         /* Just show the key name; back out delimiter */
 302                         if (show_keys)
 303                                 strbuf_setlen(buf, buf->len - 1);
 304                 }
 305         }
 306         strbuf_addch(buf, term);
 307         return 0;
 308 }
 309
 310 static int collect_config(const char *key_, const char *value_,
 311                           const struct config_context *ctx, void *cb)
 312 {
 313         struct strbuf_list *values = cb;
 314         const struct key_value_info *kvi = ctx->kvi;
 315
 316         if (!use_key_regexp && strcmp(key_, key))
 317                 return 0;
 318         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 319                 return 0;
 320         if (fixed_value && strcmp(value_pattern, (value_?value_:"")))
 321                 return 0;
 322         if (regexp != NULL &&
 323             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 324                 return 0;
 325
 326         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 327         strbuf_init(&values->items[values->nr], 0);
 328
 329         return format_config(&values->items[values->nr++], key_, value_, kvi);
 330 }
 331
 332 static int get_value(const char *key_, const char *regex_, unsigned flags)
 333 {
 334         int ret = CONFIG_GENERIC_ERROR;
 335         struct strbuf_list values = {NULL};
 336         int i;
 337
 338         if (use_key_regexp) {
 339                 char *tl;
 340
 341                 /*
 342                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 343                  * work for more complex patterns like "^[^.]*Foo.*bar".
 344                  * Perhaps we should deprecate this altogether someday.
 345                  */
 346
 347                 key = xstrdup(key_);
 348                 for (tl = key + strlen(key) - 1;
 349                      tl >= key && *tl != '.';
 350                      tl--)
 351                         *tl = tolower(*tl);
 352                 for (tl = key; *tl && *tl != '.'; tl++)
 353                         *tl = tolower(*tl);
 354
 355                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 356                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 357                         error(_("invalid key pattern: %s"), key_);
 358                         FREE_AND_NULL(key_regexp);
 359                         ret = CONFIG_INVALID_PATTERN;
 360                         goto free_strings;
 361                 }
 362         } else {
 363                 if (git_config_parse_key(key_, &key, NULL)) {
 364                         ret = CONFIG_INVALID_KEY;
 365                         goto free_strings;
 366                 }
 367         }
 368
 369         if (regex_ && (flags & CONFIG_FLAGS_FIXED_VALUE))
 370                 value_pattern = regex_;
 371         else if (regex_) {
 372                 if (regex_[0] == '!') {
 373                         do_not_match = 1;
 374                         regex_++;
 375                 }
 376
 377                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 378                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 379                         error(_("invalid pattern: %s"), regex_);
 380                         FREE_AND_NULL(regexp);
 381                         ret = CONFIG_INVALID_PATTERN;
 382                         goto free_strings;
 383                 }
 384         }
 385
 386         config_with_options(collect_config, &values,
 387                             &given_config_source, the_repository,
 388                             &config_options);
 389
 390         if (!values.nr && default_value) {
 391                 struct key_value_info kvi = KVI_INIT;
 392                 struct strbuf *item;
 393
 394                 kvi_from_param(&kvi);
 395                 ALLOC_GROW(values.items, values.nr + 1, values.alloc);
 396                 item = &values.items[values.nr++];
 397                 strbuf_init(item, 0);
 398                 if (format_config(item, key_, default_value, &kvi) < 0)
 399                         die(_("failed to format default config value: %s"),
 400                                 default_value);
 401         }
 402
 403         ret = !values.nr;
 404
 405         for (i = 0; i < values.nr; i++) {
 406                 struct strbuf *buf = values.items + i;
 407                 if (do_all || i == values.nr - 1)
 408                         fwrite(buf->buf, 1, buf->len, stdout);
 409                 strbuf_release(buf);
 410         }
 411         free(values.items);
 412
 413 free_strings:
 414         free(key);
 415         if (key_regexp) {
 416                 regfree(key_regexp);
 417                 free(key_regexp);
 418         }
 419         if (regexp) {
 420                 regfree(regexp);
 421                 free(regexp);
 422         }
 423
 424         return ret;
 425 }
 426
 427 static char *normalize_value(const char *key, const char *value,
 428                              struct key_value_info *kvi)
 429 {
 430         if (!value)
 431                 return NULL;
 432
 433         if (type == 0 || type == TYPE_PATH || type == TYPE_EXPIRY_DATE)
 434                 /*
 435                  * We don't do normalization for TYPE_PATH here: If
 436                  * the path is like ~/foobar/, we prefer to store
 437                  * "~/foobar/" in the config file, and to expand the ~
 438                  * when retrieving the value.
 439                  * Also don't do normalization for expiry dates.
 440                  */
 441                 return xstrdup(value);
 442         if (type == TYPE_INT)
 443                 return xstrfmt("%"PRId64, git_config_int64(key, value, kvi));
 444         if (type == TYPE_BOOL)
 445                 return xstrdup(git_config_bool(key, value) ?  "true" : "false");
 446         if (type == TYPE_BOOL_OR_INT) {
 447                 int is_bool, v;
 448                 v = git_config_bool_or_int(key, value, kvi, &is_bool);
 449                 if (!is_bool)
 450                         return xstrfmt("%d", v);
 451                 else
 452                         return xstrdup(v ? "true" : "false");
 453         }
 454         if (type == TYPE_BOOL_OR_STR) {
 455                 int v = git_parse_maybe_bool(value);
 456                 if (v < 0)
 457                         return xstrdup(value);
 458                 else
 459                         return xstrdup(v ? "true" : "false");
 460         }
 461         if (type == TYPE_COLOR) {
 462                 char v[COLOR_MAXLEN];
 463                 if (git_config_color(v, key, value))
 464                         die(_("cannot parse color '%s'"), value);
 465
 466                 /*
 467                  * The contents of `v` now contain an ANSI escape
 468                  * sequence, not suitable for including within a
 469                  * configuration file. Treat the above as a
 470                  * "sanity-check", and return the given value, which we
 471                  * know is representable as valid color code.
 472                  */
 473                 return xstrdup(value);
 474         }
 475
 476         BUG("cannot normalize type %d", type);
 477 }
 478
 479 static int get_color_found;
 480 static const char *get_color_slot;
 481 static const char *get_colorbool_slot;
 482 static char parsed_color[COLOR_MAXLEN];
 483
 484 static int git_get_color_config(const char *var, const char *value,
 485                                 const struct config_context *ctx UNUSED,
 486                                 void *cb UNUSED)
 487 {
 488         if (!strcmp(var, get_color_slot)) {
 489                 if (!value)
 490                         config_error_nonbool(var);
 491                 if (color_parse(value, parsed_color) < 0)
 492                         return -1;
 493                 get_color_found = 1;
 494         }
 495         return 0;
 496 }
 497
 498 static void get_color(const char *var, const char *def_color)
 499 {
 500         get_color_slot = var;
 501         get_color_found = 0;
 502         parsed_color[0] = '\0';
 503         config_with_options(git_get_color_config, NULL,
 504                             &given_config_source, the_repository,
 505                             &config_options);
 506
 507         if (!get_color_found && def_color) {
 508                 if (color_parse(def_color, parsed_color) < 0)
 509                         die(_("unable to parse default color value"));
 510         }
 511
 512         fputs(parsed_color, stdout);
 513 }
 514
 515 static int get_colorbool_found;
 516 static int get_diff_color_found;
 517 static int get_color_ui_found;
 518 static int git_get_colorbool_config(const char *var, const char *value,
 519                                     const struct config_context *ctx UNUSED,
 520                                     void *data UNUSED)
 521 {
 522         if (!strcmp(var, get_colorbool_slot))
 523                 get_colorbool_found = git_config_colorbool(var, value);
 524         else if (!strcmp(var, "diff.color"))
 525                 get_diff_color_found = git_config_colorbool(var, value);
 526         else if (!strcmp(var, "color.ui"))
 527                 get_color_ui_found = git_config_colorbool(var, value);
 528         return 0;
 529 }
 530
 531 static int get_colorbool(const char *var, int print)
 532 {
 533         get_colorbool_slot = var;
 534         get_colorbool_found = -1;
 535         get_diff_color_found = -1;
 536         get_color_ui_found = -1;
 537         config_with_options(git_get_colorbool_config, NULL,
 538                             &given_config_source, the_repository,
 539                             &config_options);
 540
 541         if (get_colorbool_found < 0) {
 542                 if (!strcmp(get_colorbool_slot, "color.diff"))
 543                         get_colorbool_found = get_diff_color_found;
 544                 if (get_colorbool_found < 0)
 545                         get_colorbool_found = get_color_ui_found;
 546         }
 547
 548         if (get_colorbool_found < 0)
 549                 /* default value if none found in config */
 550                 get_colorbool_found = GIT_COLOR_AUTO;
 551
 552         get_colorbool_found = want_color(get_colorbool_found);
 553
 554         if (print) {
 555                 printf("%s\n", get_colorbool_found ? "true" : "false");
 556                 return 0;
 557         } else
 558                 return get_colorbool_found ? 0 : 1;
 559 }
 560
 561 static void check_write(void)
 562 {
 563         if (!given_config_source.file && !startup_info->have_repository)
 564                 die(_("not in a git directory"));
 565
 566         if (given_config_source.use_stdin)
 567                 die(_("writing to stdin is not supported"));
 568
 569         if (given_config_source.blob)
 570                 die(_("writing config blobs is not supported"));
 571 }
 572
 573 struct urlmatch_current_candidate_value {
 574         char value_is_null;
 575         struct strbuf value;
 576         struct key_value_info kvi;
 577 };
 578
 579 static int urlmatch_collect_fn(const char *var, const char *value,
 580                                const struct config_context *ctx,
 581                                void *cb)
 582 {
 583         struct string_list *values = cb;
 584         struct string_list_item *item = string_list_insert(values, var);
 585         struct urlmatch_current_candidate_value *matched = item->util;
 586         const struct key_value_info *kvi = ctx->kvi;
 587
 588         if (!matched) {
 589                 matched = xmalloc(sizeof(*matched));
 590                 strbuf_init(&matched->value, 0);
 591                 item->util = matched;
 592         } else {
 593                 strbuf_reset(&matched->value);
 594         }
 595         matched->kvi = *kvi;
 596
 597         if (value) {
 598                 strbuf_addstr(&matched->value, value);
 599                 matched->value_is_null = 0;
 600         } else {
 601                 matched->value_is_null = 1;
 602         }
 603         return 0;
 604 }
 605
 606 static int get_urlmatch(const char *var, const char *url)
 607 {
 608         int ret;
 609         char *section_tail;
 610         struct string_list_item *item;
 611         struct urlmatch_config config = URLMATCH_CONFIG_INIT;
 612         struct string_list values = STRING_LIST_INIT_DUP;
 613
 614         config.collect_fn = urlmatch_collect_fn;
 615         config.cascade_fn = NULL;
 616         config.cb = &values;
 617
 618         if (!url_normalize(url, &config.url))
 619                 die("%s", config.url.err);
 620
 621         config.section = xstrdup_tolower(var);
 622         section_tail = strchr(config.section, '.');
 623         if (section_tail) {
 624                 *section_tail = '\0';
 625                 config.key = section_tail + 1;
 626                 show_keys = 0;
 627         } else {
 628                 config.key = NULL;
 629                 show_keys = 1;
 630         }
 631
 632         config_with_options(urlmatch_config_entry, &config,
 633                             &given_config_source, the_repository,
 634                             &config_options);
 635
 636         ret = !values.nr;
 637
 638         for_each_string_list_item(item, &values) {
 639                 struct urlmatch_current_candidate_value *matched = item->util;
 640                 struct strbuf buf = STRBUF_INIT;
 641
 642                 format_config(&buf, item->string,
 643                               matched->value_is_null ? NULL : matched->value.buf,
 644                               &matched->kvi);
 645                 fwrite(buf.buf, 1, buf.len, stdout);
 646                 strbuf_release(&buf);
 647
 648                 strbuf_release(&matched->value);
 649         }
 650         urlmatch_config_release(&config);
 651         string_list_clear(&values, 1);
 652         free(config.url.url);
 653
 654         free((void *)config.section);
 655         return ret;
 656 }
 657
 658 static char *default_user_config(void)
 659 {
 660         struct strbuf buf = STRBUF_INIT;
 661         strbuf_addf(&buf,
 662                     _("# This is Git's per-user configuration file.\n"
 663                       "[user]\n"
 664                       "# Please adapt and uncomment the following lines:\n"
 665                       "#        name = %s\n"
 666                       "#        email = %s\n"),
 667                     ident_default_name(),
 668                     ident_default_email());
 669         return strbuf_detach(&buf, NULL);
 670 }
 671
 672 int cmd_config(int argc, const char **argv, const char *prefix)
 673 {
 674         int nongit = !startup_info->have_repository;
 675         char *value = NULL;
 676         int flags = 0;
 677         int ret = 0;
 678         struct key_value_info default_kvi = KVI_INIT;
 679
 680         given_config_source.file = xstrdup_or_null(getenv(CONFIG_ENVIRONMENT));
 681
 682         argc = parse_options(argc, argv, prefix, builtin_config_options,
 683                              builtin_config_usage,
 684                              PARSE_OPT_STOP_AT_NON_OPTION);
 685
 686         if (use_global_config + use_system_config + use_local_config +
 687             use_worktree_config +
 688             !!given_config_source.file + !!given_config_source.blob > 1) {
 689                 error(_("only one config file at a time"));
 690                 usage_builtin_config();
 691         }
 692
 693         if (nongit) {
 694                 if (use_local_config)
 695                         die(_("--local can only be used inside a git repository"));
 696                 if (given_config_source.blob)
 697                         die(_("--blob can only be used inside a git repository"));
 698                 if (use_worktree_config)
 699                         die(_("--worktree can only be used inside a git repository"));
 700
 701         }
 702
 703         if (given_config_source.file &&
 704                         !strcmp(given_config_source.file, "-")) {
 705                 given_config_source.file = NULL;
 706                 given_config_source.use_stdin = 1;
 707                 given_config_source.scope = CONFIG_SCOPE_COMMAND;
 708         }
 709
 710         if (use_global_config) {
 711                 given_config_source.file = git_global_config();
 712                 if (!given_config_source.file)
 713                         /*
 714                          * It is unknown if HOME/.gitconfig exists, so
 715                          * we do not know if we should write to XDG
 716                          * location; error out even if XDG_CONFIG_HOME
 717                          * is set and points at a sane location.
 718                          */
 719                         die(_("$HOME not set"));
 720                 given_config_source.scope = CONFIG_SCOPE_GLOBAL;
 721         } else if (use_system_config) {
 722                 given_config_source.file = git_system_config();
 723                 given_config_source.scope = CONFIG_SCOPE_SYSTEM;
 724         } else if (use_local_config) {
 725                 given_config_source.file = git_pathdup("config");
 726                 given_config_source.scope = CONFIG_SCOPE_LOCAL;
 727         } else if (use_worktree_config) {
 728                 struct worktree **worktrees = get_worktrees();
 729                 if (the_repository->repository_format_worktree_config)
 730                         given_config_source.file = git_pathdup("config.worktree");
 731                 else if (worktrees[0] && worktrees[1])
 732                         die(_("--worktree cannot be used with multiple "
 733                               "working trees unless the config\n"
 734                               "extension worktreeConfig is enabled. "
 735                               "Please read \"CONFIGURATION FILE\"\n"
 736                               "section in \"git help worktree\" for details"));
 737                 else
 738                         given_config_source.file = git_pathdup("config");
 739                 given_config_source.scope = CONFIG_SCOPE_LOCAL;
 740                 free_worktrees(worktrees);
 741         } else if (given_config_source.file) {
 742                 if (!is_absolute_path(given_config_source.file) && prefix)
 743                         given_config_source.file =
 744                                 prefix_filename(prefix, given_config_source.file);
 745                 given_config_source.scope = CONFIG_SCOPE_COMMAND;
 746         } else if (given_config_source.blob) {
 747                 given_config_source.scope = CONFIG_SCOPE_COMMAND;
 748         }
 749
 750         if (respect_includes_opt == -1)
 751                 config_options.respect_includes = !given_config_source.file;
 752         else
 753                 config_options.respect_includes = respect_includes_opt;
 754         if (!nongit) {
 755                 config_options.commondir = get_git_common_dir();
 756                 config_options.git_dir = get_git_dir();
 757         }
 758
 759         if (end_nul) {
 760                 term = '\0';
 761                 delim = '\n';
 762                 key_delim = '\n';
 763         }
 764
 765         if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && type) {
 766                 error(_("--get-color and variable type are incoherent"));
 767                 usage_builtin_config();
 768         }
 769
 770         if (HAS_MULTI_BITS(actions)) {
 771                 error(_("only one action at a time"));
 772                 usage_builtin_config();
 773         }
 774         if (actions == 0)
 775                 switch (argc) {
 776                 case 1: actions = ACTION_GET; break;
 777                 case 2: actions = ACTION_SET; break;
 778                 case 3: actions = ACTION_SET_ALL; break;
 779                 default:
 780                         usage_builtin_config();
 781                 }
 782         if (omit_values &&
 783             !(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
 784                 error(_("--name-only is only applicable to --list or --get-regexp"));
 785                 usage_builtin_config();
 786         }
 787
 788         if (show_origin && !(actions &
 789                 (ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
 790                 error(_("--show-origin is only applicable to --get, --get-all, "
 791                         "--get-regexp, and --list"));
 792                 usage_builtin_config();
 793         }
 794
 795         if (default_value && !(actions & ACTION_GET)) {
 796                 error(_("--default is only applicable to --get"));
 797                 usage_builtin_config();
 798         }
 799
 800         /* check usage of --fixed-value */
 801         if (fixed_value) {
 802                 int allowed_usage = 0;
 803
 804                 switch (actions) {
 805                 /* git config --get <name> <value-pattern> */
 806                 case ACTION_GET:
 807                 /* git config --get-all <name> <value-pattern> */
 808                 case ACTION_GET_ALL:
 809                 /* git config --get-regexp <name-pattern> <value-pattern> */
 810                 case ACTION_GET_REGEXP:
 811                 /* git config --unset <name> <value-pattern> */
 812                 case ACTION_UNSET:
 813                 /* git config --unset-all <name> <value-pattern> */
 814                 case ACTION_UNSET_ALL:
 815                         allowed_usage = argc > 1 && !!argv[1];
 816                         break;
 817
 818                 /* git config <name> <value> <value-pattern> */
 819                 case ACTION_SET_ALL:
 820                 /* git config --replace-all <name> <value> <value-pattern> */
 821                 case ACTION_REPLACE_ALL:
 822                         allowed_usage = argc > 2 && !!argv[2];
 823                         break;
 824
 825                 /* other options don't allow --fixed-value */
 826                 }
 827
 828                 if (!allowed_usage) {
 829                         error(_("--fixed-value only applies with 'value-pattern'"));
 830                         usage_builtin_config();
 831                 }
 832
 833                 flags |= CONFIG_FLAGS_FIXED_VALUE;
 834         }
 835
 836         if (actions & PAGING_ACTIONS)
 837                 setup_auto_pager("config", 1);
 838
 839         if (actions == ACTION_LIST) {
 840                 check_argc(argc, 0, 0);
 841                 if (config_with_options(show_all_config, NULL,
 842                                         &given_config_source, the_repository,
 843                                         &config_options) < 0) {
 844                         if (given_config_source.file)
 845                                 die_errno(_("unable to read config file '%s'"),
 846                                           given_config_source.file);
 847                         else
 848                                 die(_("error processing config file(s)"));
 849                 }
 850         }
 851         else if (actions == ACTION_EDIT) {
 852                 char *config_file;
 853
 854                 check_argc(argc, 0, 0);
 855                 if (!given_config_source.file && nongit)
 856                         die(_("not in a git directory"));
 857                 if (given_config_source.use_stdin)
 858                         die(_("editing stdin is not supported"));
 859                 if (given_config_source.blob)
 860                         die(_("editing blobs is not supported"));
 861                 git_config(git_default_config, NULL);
 862                 config_file = given_config_source.file ?
 863                                 xstrdup(given_config_source.file) :
 864                                 git_pathdup("config");
 865                 if (use_global_config) {
 866                         int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
 867                         if (fd >= 0) {
 868                                 char *content = default_user_config();
 869                                 write_str_in_full(fd, content);
 870                                 free(content);
 871                                 close(fd);
 872                         }
 873                         else if (errno != EEXIST)
 874                                 die_errno(_("cannot create configuration file %s"), config_file);
 875                 }
 876                 launch_editor(config_file, NULL, NULL);
 877                 free(config_file);
 878         }
 879         else if (actions == ACTION_SET) {
 880                 check_write();
 881                 check_argc(argc, 2, 2);
 882                 value = normalize_value(argv[0], argv[1], &default_kvi);
 883                 ret = git_config_set_in_file_gently(given_config_source.file, argv[0], value);
 884                 if (ret == CONFIG_NOTHING_SET)
 885                         error(_("cannot overwrite multiple values with a single value\n"
 886                         "       Use a regexp, --add or --replace-all to change %s."), argv[0]);
 887         }
 888         else if (actions == ACTION_SET_ALL) {
 889                 check_write();
 890                 check_argc(argc, 2, 3);
 891                 value = normalize_value(argv[0], argv[1], &default_kvi);
 892                 ret = git_config_set_multivar_in_file_gently(given_config_source.file,
 893                                                              argv[0], value, argv[2],
 894                                                              flags);
 895         }
 896         else if (actions == ACTION_ADD) {
 897                 check_write();
 898                 check_argc(argc, 2, 2);
 899                 value = normalize_value(argv[0], argv[1], &default_kvi);
 900                 ret = git_config_set_multivar_in_file_gently(given_config_source.file,
 901                                                              argv[0], value,
 902                                                              CONFIG_REGEX_NONE,
 903                                                              flags);
 904         }
 905         else if (actions == ACTION_REPLACE_ALL) {
 906                 check_write();
 907                 check_argc(argc, 2, 3);
 908                 value = normalize_value(argv[0], argv[1], &default_kvi);
 909                 ret = git_config_set_multivar_in_file_gently(given_config_source.file,
 910                                                              argv[0], value, argv[2],
 911                                                              flags | CONFIG_FLAGS_MULTI_REPLACE);
 912         }
 913         else if (actions == ACTION_GET) {
 914                 check_argc(argc, 1, 2);
 915                 return get_value(argv[0], argv[1], flags);
 916         }
 917         else if (actions == ACTION_GET_ALL) {
 918                 do_all = 1;
 919                 check_argc(argc, 1, 2);
 920                 return get_value(argv[0], argv[1], flags);
 921         }
 922         else if (actions == ACTION_GET_REGEXP) {
 923                 show_keys = 1;
 924                 use_key_regexp = 1;
 925                 do_all = 1;
 926                 check_argc(argc, 1, 2);
 927                 return get_value(argv[0], argv[1], flags);
 928         }
 929         else if (actions == ACTION_GET_URLMATCH) {
 930                 check_argc(argc, 2, 2);
 931                 return get_urlmatch(argv[0], argv[1]);
 932         }
 933         else if (actions == ACTION_UNSET) {
 934                 check_write();
 935                 check_argc(argc, 1, 2);
 936                 if (argc == 2)
 937                         return git_config_set_multivar_in_file_gently(given_config_source.file,
 938                                                                       argv[0], NULL, argv[1],
 939                                                                       flags);
 940                 else
 941                         return git_config_set_in_file_gently(given_config_source.file,
 942                                                              argv[0], NULL);
 943         }
 944         else if (actions == ACTION_UNSET_ALL) {
 945                 check_write();
 946                 check_argc(argc, 1, 2);
 947                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 948                                                               argv[0], NULL, argv[1],
 949                                                               flags | CONFIG_FLAGS_MULTI_REPLACE);
 950         }
 951         else if (actions == ACTION_RENAME_SECTION) {
 952                 check_write();
 953                 check_argc(argc, 2, 2);
 954                 ret = git_config_rename_section_in_file(given_config_source.file,
 955                                                         argv[0], argv[1]);
 956                 if (ret < 0)
 957                         return ret;
 958                 else if (!ret)
 959                         die(_("no such section: %s"), argv[0]);
 960                 else
 961                         ret = 0;
 962         }
 963         else if (actions == ACTION_REMOVE_SECTION) {
 964                 check_write();
 965                 check_argc(argc, 1, 1);
 966                 ret = git_config_rename_section_in_file(given_config_source.file,
 967                                                         argv[0], NULL);
 968                 if (ret < 0)
 969                         return ret;
 970                 else if (!ret)
 971                         die(_("no such section: %s"), argv[0]);
 972                 else
 973                         ret = 0;
 974         }
 975         else if (actions == ACTION_GET_COLOR) {
 976                 check_argc(argc, 1, 2);
 977                 get_color(argv[0], argv[1]);
 978         }
 979         else if (actions == ACTION_GET_COLORBOOL) {
 980                 check_argc(argc, 1, 2);
 981                 if (argc == 2)
 982                         color_stdout_is_tty = git_config_bool("command line", argv[1]);
 983                 return get_colorbool(argv[0], argc == 2);
 984         }
 985
 986         free(value);
 987         return ret;
 988 }