builtin/config.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "color.h"
   4 #include "parse-options.h"
   5
   6 static const char *const builtin_config_usage[] = {
   7         "git config [options]",
   8         NULL
   9 };
  10
  11 static char *key;
  12 static regex_t *key_regexp;
  13 static regex_t *regexp;
  14 static int show_keys;
  15 static int use_key_regexp;
  16 static int do_all;
  17 static int do_not_match;
  18 static int seen;
  19 static char delim = '=';
  20 static char key_delim = ' ';
  21 static char term = '\n';
  22
  23 static int use_global_config, use_system_config;
  24 static const char *given_config_file;
  25 static int actions, types;
  26 static const char *get_color_slot, *get_colorbool_slot;
  27 static int end_null;
  28
  29 #define ACTION_GET (1<<0)
  30 #define ACTION_GET_ALL (1<<1)
  31 #define ACTION_GET_REGEXP (1<<2)
  32 #define ACTION_REPLACE_ALL (1<<3)
  33 #define ACTION_ADD (1<<4)
  34 #define ACTION_UNSET (1<<5)
  35 #define ACTION_UNSET_ALL (1<<6)
  36 #define ACTION_RENAME_SECTION (1<<7)
  37 #define ACTION_REMOVE_SECTION (1<<8)
  38 #define ACTION_LIST (1<<9)
  39 #define ACTION_EDIT (1<<10)
  40 #define ACTION_SET (1<<11)
  41 #define ACTION_SET_ALL (1<<12)
  42 #define ACTION_GET_COLOR (1<<13)
  43 #define ACTION_GET_COLORBOOL (1<<14)
  44
  45 #define TYPE_BOOL (1<<0)
  46 #define TYPE_INT (1<<1)
  47 #define TYPE_BOOL_OR_INT (1<<2)
  48 #define TYPE_PATH (1<<3)
  49
  50 static struct option builtin_config_options[] = {
  51         OPT_GROUP("Config file location"),
  52         OPT_BOOLEAN(0, "global", &use_global_config, "use global config file"),
  53         OPT_BOOLEAN(0, "system", &use_system_config, "use system config file"),
  54         OPT_STRING('f', "file", &given_config_file, "FILE", "use given config file"),
  55         OPT_GROUP("Action"),
  56         OPT_BIT(0, "get", &actions, "get value: name [value-regex]", ACTION_GET),
  57         OPT_BIT(0, "get-all", &actions, "get all values: key [value-regex]", ACTION_GET_ALL),
  58         OPT_BIT(0, "get-regexp", &actions, "get values for regexp: name-regex [value-regex]", ACTION_GET_REGEXP),
  59         OPT_BIT(0, "replace-all", &actions, "replace all matching variables: name value [value_regex]", ACTION_REPLACE_ALL),
  60         OPT_BIT(0, "add", &actions, "adds a new variable: name value", ACTION_ADD),
  61         OPT_BIT(0, "unset", &actions, "removes a variable: name [value-regex]", ACTION_UNSET),
  62         OPT_BIT(0, "unset-all", &actions, "removes all matches: name [value-regex]", ACTION_UNSET_ALL),
  63         OPT_BIT(0, "rename-section", &actions, "rename section: old-name new-name", ACTION_RENAME_SECTION),
  64         OPT_BIT(0, "remove-section", &actions, "remove a section: name", ACTION_REMOVE_SECTION),
  65         OPT_BIT('l', "list", &actions, "list all", ACTION_LIST),
  66         OPT_BIT('e', "edit", &actions, "opens an editor", ACTION_EDIT),
  67         OPT_STRING(0, "get-color", &get_color_slot, "slot", "find the color configured: [default]"),
  68         OPT_STRING(0, "get-colorbool", &get_colorbool_slot, "slot", "find the color setting: [stdout-is-tty]"),
  69         OPT_GROUP("Type"),
  70         OPT_BIT(0, "bool", &types, "value is \"true\" or \"false\"", TYPE_BOOL),
  71         OPT_BIT(0, "int", &types, "value is decimal number", TYPE_INT),
  72         OPT_BIT(0, "bool-or-int", &types, "value is --bool or --int", TYPE_BOOL_OR_INT),
  73         OPT_BIT(0, "path", &types, "value is a path (file or directory name)", TYPE_PATH),
  74         OPT_GROUP("Other"),
  75         OPT_BOOLEAN('z', "null", &end_null, "terminate values with NUL byte"),
  76         OPT_END(),
  77 };
  78
  79 static void check_argc(int argc, int min, int max) {
  80         if (argc >= min && argc <= max)
  81                 return;
  82         error("wrong number of arguments");
  83         usage_with_options(builtin_config_usage, builtin_config_options);
  84 }
  85
  86 static int show_all_config(const char *key_, const char *value_, void *cb)
  87 {
  88         if (value_)
  89                 printf("%s%c%s%c", key_, delim, value_, term);
  90         else
  91                 printf("%s%c", key_, term);
  92         return 0;
  93 }
  94
  95 static int show_config(const char *key_, const char *value_, void *cb)
  96 {
  97         char value[256];
  98         const char *vptr = value;
  99         int must_free_vptr = 0;
 100         int dup_error = 0;
 101
 102         if (!use_key_regexp && strcmp(key_, key))
 103                 return 0;
 104         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 105                 return 0;
 106         if (regexp != NULL &&
 107             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 108                 return 0;
 109
 110         if (show_keys) {
 111                 if (value_)
 112                         printf("%s%c", key_, key_delim);
 113                 else
 114                         printf("%s", key_);
 115         }
 116         if (seen && !do_all)
 117                 dup_error = 1;
 118         if (types == TYPE_INT)
 119                 sprintf(value, "%d", git_config_int(key_, value_?value_:""));
 120         else if (types == TYPE_BOOL)
 121                 vptr = git_config_bool(key_, value_) ? "true" : "false";
 122         else if (types == TYPE_BOOL_OR_INT) {
 123                 int is_bool, v;
 124                 v = git_config_bool_or_int(key_, value_, &is_bool);
 125                 if (is_bool)
 126                         vptr = v ? "true" : "false";
 127                 else
 128                         sprintf(value, "%d", v);
 129         } else if (types == TYPE_PATH) {
 130                 git_config_pathname(&vptr, key_, value_);
 131                 must_free_vptr = 1;
 132         }
 133         else
 134                 vptr = value_?value_:"";
 135         seen++;
 136         if (dup_error) {
 137                 error("More than one value for the key %s: %s",
 138                                 key_, vptr);
 139         }
 140         else
 141                 printf("%s%c", vptr, term);
 142         if (must_free_vptr)
 143                 /* If vptr must be freed, it's a pointer to a
 144                  * dynamically allocated buffer, it's safe to cast to
 145                  * const.
 146                 */
 147                 free((char *)vptr);
 148
 149         return 0;
 150 }
 151
 152 static int get_value(const char *key_, const char *regex_)
 153 {
 154         int ret = -1;
 155         char *tl;
 156         char *global = NULL, *repo_config = NULL;
 157         const char *system_wide = NULL, *local;
 158
 159         local = config_exclusive_filename;
 160         if (!local) {
 161                 const char *home = getenv("HOME");
 162                 local = repo_config = git_pathdup("config");
 163                 if (git_config_global() && home)
 164                         global = xstrdup(mkpath("%s/.gitconfig", home));
 165                 if (git_config_system())
 166                         system_wide = git_etc_gitconfig();
 167         }
 168
 169         key = xstrdup(key_);
 170         for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
 171                 *tl = tolower(*tl);
 172         for (tl=key; *tl && *tl != '.'; ++tl)
 173                 *tl = tolower(*tl);
 174
 175         if (use_key_regexp) {
 176                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 177                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 178                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 179                         goto free_strings;
 180                 }
 181         }
 182
 183         if (regex_) {
 184                 if (regex_[0] == '!') {
 185                         do_not_match = 1;
 186                         regex_++;
 187                 }
 188
 189                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 190                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 191                         fprintf(stderr, "Invalid pattern: %s\n", regex_);
 192                         goto free_strings;
 193                 }
 194         }
 195
 196         if (do_all && system_wide)
 197                 git_config_from_file(show_config, system_wide, NULL);
 198         if (do_all && global)
 199                 git_config_from_file(show_config, global, NULL);
 200         git_config_from_file(show_config, local, NULL);
 201         if (!do_all && !seen && global)
 202                 git_config_from_file(show_config, global, NULL);
 203         if (!do_all && !seen && system_wide)
 204                 git_config_from_file(show_config, system_wide, NULL);
 205
 206         free(key);
 207         if (regexp) {
 208                 regfree(regexp);
 209                 free(regexp);
 210         }
 211
 212         if (do_all)
 213                 ret = !seen;
 214         else
 215                 ret = (seen == 1) ? 0 : seen > 1 ? 2 : 1;
 216
 217 free_strings:
 218         free(repo_config);
 219         free(global);
 220         return ret;
 221 }
 222
 223 static char *normalize_value(const char *key, const char *value)
 224 {
 225         char *normalized;
 226
 227         if (!value)
 228                 return NULL;
 229
 230         if (types == 0 || types == TYPE_PATH)
 231                 /*
 232                  * We don't do normalization for TYPE_PATH here: If
 233                  * the path is like ~/foobar/, we prefer to store
 234                  * "~/foobar/" in the config file, and to expand the ~
 235                  * when retrieving the value.
 236                  */
 237                 normalized = xstrdup(value);
 238         else {
 239                 normalized = xmalloc(64);
 240                 if (types == TYPE_INT) {
 241                         int v = git_config_int(key, value);
 242                         sprintf(normalized, "%d", v);
 243                 }
 244                 else if (types == TYPE_BOOL)
 245                         sprintf(normalized, "%s",
 246                                 git_config_bool(key, value) ? "true" : "false");
 247                 else if (types == TYPE_BOOL_OR_INT) {
 248                         int is_bool, v;
 249                         v = git_config_bool_or_int(key, value, &is_bool);
 250                         if (!is_bool)
 251                                 sprintf(normalized, "%d", v);
 252                         else
 253                                 sprintf(normalized, "%s", v ? "true" : "false");
 254                 }
 255         }
 256
 257         return normalized;
 258 }
 259
 260 static int get_color_found;
 261 static const char *get_color_slot;
 262 static const char *get_colorbool_slot;
 263 static char parsed_color[COLOR_MAXLEN];
 264
 265 static int git_get_color_config(const char *var, const char *value, void *cb)
 266 {
 267         if (!strcmp(var, get_color_slot)) {
 268                 if (!value)
 269                         config_error_nonbool(var);
 270                 color_parse(value, var, parsed_color);
 271                 get_color_found = 1;
 272         }
 273         return 0;
 274 }
 275
 276 static void get_color(const char *def_color)
 277 {
 278         get_color_found = 0;
 279         parsed_color[0] = '\0';
 280         git_config(git_get_color_config, NULL);
 281
 282         if (!get_color_found && def_color)
 283                 color_parse(def_color, "command line", parsed_color);
 284
 285         fputs(parsed_color, stdout);
 286 }
 287
 288 static int stdout_is_tty;
 289 static int get_colorbool_found;
 290 static int get_diff_color_found;
 291 static int git_get_colorbool_config(const char *var, const char *value,
 292                 void *cb)
 293 {
 294         if (!strcmp(var, get_colorbool_slot)) {
 295                 get_colorbool_found =
 296                         git_config_colorbool(var, value, stdout_is_tty);
 297         }
 298         if (!strcmp(var, "diff.color")) {
 299                 get_diff_color_found =
 300                         git_config_colorbool(var, value, stdout_is_tty);
 301         }
 302         if (!strcmp(var, "color.ui")) {
 303                 git_use_color_default = git_config_colorbool(var, value, stdout_is_tty);
 304                 return 0;
 305         }
 306         return 0;
 307 }
 308
 309 static int get_colorbool(int print)
 310 {
 311         get_colorbool_found = -1;
 312         get_diff_color_found = -1;
 313         git_config(git_get_colorbool_config, NULL);
 314
 315         if (get_colorbool_found < 0) {
 316                 if (!strcmp(get_colorbool_slot, "color.diff"))
 317                         get_colorbool_found = get_diff_color_found;
 318                 if (get_colorbool_found < 0)
 319                         get_colorbool_found = git_use_color_default;
 320         }
 321
 322         if (print) {
 323                 printf("%s\n", get_colorbool_found ? "true" : "false");
 324                 return 0;
 325         } else
 326                 return get_colorbool_found ? 0 : 1;
 327 }
 328
 329 int cmd_config(int argc, const char **argv, const char *unused_prefix)
 330 {
 331         int nongit;
 332         char *value;
 333         const char *prefix = setup_git_directory_gently(&nongit);
 334
 335         config_exclusive_filename = getenv(CONFIG_ENVIRONMENT);
 336
 337         argc = parse_options(argc, argv, prefix, builtin_config_options,
 338                              builtin_config_usage,
 339                              PARSE_OPT_STOP_AT_NON_OPTION);
 340
 341         if (use_global_config + use_system_config + !!given_config_file > 1) {
 342                 error("only one config file at a time.");
 343                 usage_with_options(builtin_config_usage, builtin_config_options);
 344         }
 345
 346         if (use_global_config) {
 347                 char *home = getenv("HOME");
 348                 if (home) {
 349                         char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
 350                         config_exclusive_filename = user_config;
 351                 } else {
 352                         die("$HOME not set");
 353                 }
 354         }
 355         else if (use_system_config)
 356                 config_exclusive_filename = git_etc_gitconfig();
 357         else if (given_config_file) {
 358                 if (!is_absolute_path(given_config_file) && prefix)
 359                         config_exclusive_filename = prefix_filename(prefix,
 360                                                                     strlen(prefix),
 361                                                                     given_config_file);
 362                 else
 363                         config_exclusive_filename = given_config_file;
 364         }
 365
 366         if (end_null) {
 367                 term = '\0';
 368                 delim = '\n';
 369                 key_delim = '\n';
 370         }
 371
 372         if (HAS_MULTI_BITS(types)) {
 373                 error("only one type at a time.");
 374                 usage_with_options(builtin_config_usage, builtin_config_options);
 375         }
 376
 377         if (get_color_slot)
 378             actions |= ACTION_GET_COLOR;
 379         if (get_colorbool_slot)
 380             actions |= ACTION_GET_COLORBOOL;
 381
 382         if ((get_color_slot || get_colorbool_slot) && types) {
 383                 error("--get-color and variable type are incoherent");
 384                 usage_with_options(builtin_config_usage, builtin_config_options);
 385         }
 386
 387         if (HAS_MULTI_BITS(actions)) {
 388                 error("only one action at a time.");
 389                 usage_with_options(builtin_config_usage, builtin_config_options);
 390         }
 391         if (actions == 0)
 392                 switch (argc) {
 393                 case 1: actions = ACTION_GET; break;
 394                 case 2: actions = ACTION_SET; break;
 395                 case 3: actions = ACTION_SET_ALL; break;
 396                 default:
 397                         usage_with_options(builtin_config_usage, builtin_config_options);
 398                 }
 399
 400         if (actions == ACTION_LIST) {
 401                 check_argc(argc, 0, 0);
 402                 if (git_config(show_all_config, NULL) < 0) {
 403                         if (config_exclusive_filename)
 404                                 die_errno("unable to read config file '%s'",
 405                                           config_exclusive_filename);
 406                         else
 407                                 die("error processing config file(s)");
 408                 }
 409         }
 410         else if (actions == ACTION_EDIT) {
 411                 check_argc(argc, 0, 0);
 412                 if (!config_exclusive_filename && nongit)
 413                         die("not in a git directory");
 414                 git_config(git_default_config, NULL);
 415                 launch_editor(config_exclusive_filename ?
 416                               config_exclusive_filename : git_path("config"),
 417                               NULL, NULL);
 418         }
 419         else if (actions == ACTION_SET) {
 420                 check_argc(argc, 2, 2);
 421                 value = normalize_value(argv[0], argv[1]);
 422                 return git_config_set(argv[0], value);
 423         }
 424         else if (actions == ACTION_SET_ALL) {
 425                 check_argc(argc, 2, 3);
 426                 value = normalize_value(argv[0], argv[1]);
 427                 return git_config_set_multivar(argv[0], value, argv[2], 0);
 428         }
 429         else if (actions == ACTION_ADD) {
 430                 check_argc(argc, 2, 2);
 431                 value = normalize_value(argv[0], argv[1]);
 432                 return git_config_set_multivar(argv[0], value, "^$", 0);
 433         }
 434         else if (actions == ACTION_REPLACE_ALL) {
 435                 check_argc(argc, 2, 3);
 436                 value = normalize_value(argv[0], argv[1]);
 437                 return git_config_set_multivar(argv[0], value, argv[2], 1);
 438         }
 439         else if (actions == ACTION_GET) {
 440                 check_argc(argc, 1, 2);
 441                 return get_value(argv[0], argv[1]);
 442         }
 443         else if (actions == ACTION_GET_ALL) {
 444                 do_all = 1;
 445                 check_argc(argc, 1, 2);
 446                 return get_value(argv[0], argv[1]);
 447         }
 448         else if (actions == ACTION_GET_REGEXP) {
 449                 show_keys = 1;
 450                 use_key_regexp = 1;
 451                 do_all = 1;
 452                 check_argc(argc, 1, 2);
 453                 return get_value(argv[0], argv[1]);
 454         }
 455         else if (actions == ACTION_UNSET) {
 456                 check_argc(argc, 1, 2);
 457                 if (argc == 2)
 458                         return git_config_set_multivar(argv[0], NULL, argv[1], 0);
 459                 else
 460                         return git_config_set(argv[0], NULL);
 461         }
 462         else if (actions == ACTION_UNSET_ALL) {
 463                 check_argc(argc, 1, 2);
 464                 return git_config_set_multivar(argv[0], NULL, argv[1], 1);
 465         }
 466         else if (actions == ACTION_RENAME_SECTION) {
 467                 int ret;
 468                 check_argc(argc, 2, 2);
 469                 ret = git_config_rename_section(argv[0], argv[1]);
 470                 if (ret < 0)
 471                         return ret;
 472                 if (ret == 0)
 473                         die("No such section!");
 474         }
 475         else if (actions == ACTION_REMOVE_SECTION) {
 476                 int ret;
 477                 check_argc(argc, 1, 1);
 478                 ret = git_config_rename_section(argv[0], NULL);
 479                 if (ret < 0)
 480                         return ret;
 481                 if (ret == 0)
 482                         die("No such section!");
 483         }
 484         else if (actions == ACTION_GET_COLOR) {
 485                 get_color(argv[0]);
 486         }
 487         else if (actions == ACTION_GET_COLORBOOL) {
 488                 if (argc == 1)
 489                         stdout_is_tty = git_config_bool("command line", argv[0]);
 490                 else if (argc == 0)
 491                         stdout_is_tty = isatty(1);
 492                 return get_colorbool(argc != 0);
 493         }
 494
 495         return 0;
 496 }