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