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