builtin-config.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "color.h"
   4
   5 static const char git_config_set_usage[] =
   6 "git-config [ --global | --system | [ -f | --file ] config-file ] [ --bool | --int | --bool-or-int ] [ -z | --null ] [--get | --get-all | --get-regexp | --replace-all | --add | --unset | --unset-all] name [value [value_regex]] | --rename-section old_name new_name | --remove-section name | --list | --get-color var [default] | --get-colorbool name [stdout-is-tty]";
   7
   8 static char *key;
   9 static regex_t *key_regexp;
  10 static regex_t *regexp;
  11 static int show_keys;
  12 static int use_key_regexp;
  13 static int do_all;
  14 static int do_not_match;
  15 static int seen;
  16 static char delim = '=';
  17 static char key_delim = ' ';
  18 static char term = '\n';
  19 static enum { T_RAW, T_INT, T_BOOL, T_BOOL_OR_INT } type = T_RAW;
  20
  21 static int show_all_config(const char *key_, const char *value_)
  22 {
  23         if (value_)
  24                 printf("%s%c%s%c", key_, delim, value_, term);
  25         else
  26                 printf("%s%c", key_, term);
  27         return 0;
  28 }
  29
  30 static int show_config(const char* key_, const char* value_)
  31 {
  32         char value[256];
  33         const char *vptr = value;
  34         int dup_error = 0;
  35
  36         if (!use_key_regexp && strcmp(key_, key))
  37                 return 0;
  38         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
  39                 return 0;
  40         if (regexp != NULL &&
  41             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
  42                 return 0;
  43
  44         if (show_keys) {
  45                 if (value_)
  46                         printf("%s%c", key_, key_delim);
  47                 else
  48                         printf("%s", key_);
  49         }
  50         if (seen && !do_all)
  51                 dup_error = 1;
  52         if (type == T_INT)
  53                 sprintf(value, "%d", git_config_int(key_, value_?value_:""));
  54         else if (type == T_BOOL)
  55                 vptr = git_config_bool(key_, value_) ? "true" : "false";
  56         else if (type == T_BOOL_OR_INT) {
  57                 int is_bool, v;
  58                 v = git_config_bool_or_int(key_, value_, &is_bool);
  59                 if (is_bool)
  60                         vptr = v ? "true" : "false";
  61                 else
  62                         sprintf(value, "%d", v);
  63         }
  64         else
  65                 vptr = value_?value_:"";
  66         seen++;
  67         if (dup_error) {
  68                 error("More than one value for the key %s: %s",
  69                                 key_, vptr);
  70         }
  71         else
  72                 printf("%s%c", vptr, term);
  73
  74         return 0;
  75 }
  76
  77 static int get_value(const char* key_, const char* regex_)
  78 {
  79         int ret = -1;
  80         char *tl;
  81         char *global = NULL, *repo_config = NULL;
  82         const char *system_wide = NULL, *local;
  83
  84         local = getenv(CONFIG_ENVIRONMENT);
  85         if (!local) {
  86                 const char *home = getenv("HOME");
  87                 local = getenv(CONFIG_LOCAL_ENVIRONMENT);
  88                 if (!local)
  89                         local = repo_config = xstrdup(git_path("config"));
  90                 if (git_config_global() && home)
  91                         global = xstrdup(mkpath("%s/.gitconfig", home));
  92                 if (git_config_system())
  93                         system_wide = git_etc_gitconfig();
  94         }
  95
  96         key = xstrdup(key_);
  97         for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
  98                 *tl = tolower(*tl);
  99         for (tl=key; *tl && *tl != '.'; ++tl)
 100                 *tl = tolower(*tl);
 101
 102         if (use_key_regexp) {
 103                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 104                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 105                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 106                         goto free_strings;
 107                 }
 108         }
 109
 110         if (regex_) {
 111                 if (regex_[0] == '!') {
 112                         do_not_match = 1;
 113                         regex_++;
 114                 }
 115
 116                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 117                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 118                         fprintf(stderr, "Invalid pattern: %s\n", regex_);
 119                         goto free_strings;
 120                 }
 121         }
 122
 123         if (do_all && system_wide)
 124                 git_config_from_file(show_config, system_wide);
 125         if (do_all && global)
 126                 git_config_from_file(show_config, global);
 127         git_config_from_file(show_config, local);
 128         if (!do_all && !seen && global)
 129                 git_config_from_file(show_config, global);
 130         if (!do_all && !seen && system_wide)
 131                 git_config_from_file(show_config, system_wide);
 132
 133         free(key);
 134         if (regexp) {
 135                 regfree(regexp);
 136                 free(regexp);
 137         }
 138
 139         if (do_all)
 140                 ret = !seen;
 141         else
 142                 ret = (seen == 1) ? 0 : seen > 1 ? 2 : 1;
 143
 144 free_strings:
 145         free(repo_config);
 146         free(global);
 147         return ret;
 148 }
 149
 150 char *normalize_value(const char *key, const char *value)
 151 {
 152         char *normalized;
 153
 154         if (!value)
 155                 return NULL;
 156
 157         if (type == T_RAW)
 158                 normalized = xstrdup(value);
 159         else {
 160                 normalized = xmalloc(64);
 161                 if (type == T_INT) {
 162                         int v = git_config_int(key, value);
 163                         sprintf(normalized, "%d", v);
 164                 }
 165                 else if (type == T_BOOL)
 166                         sprintf(normalized, "%s",
 167                                 git_config_bool(key, value) ? "true" : "false");
 168                 else if (type == T_BOOL_OR_INT) {
 169                         int is_bool, v;
 170                         v = git_config_bool_or_int(key, value, &is_bool);
 171                         if (!is_bool)
 172                                 sprintf(normalized, "%d", v);
 173                         else
 174                                 sprintf(normalized, "%s", v ? "true" : "false");
 175                 }
 176         }
 177
 178         return normalized;
 179 }
 180
 181 static int get_color_found;
 182 static const char *get_color_slot;
 183 static char parsed_color[COLOR_MAXLEN];
 184
 185 static int git_get_color_config(const char *var, const char *value)
 186 {
 187         if (!strcmp(var, get_color_slot)) {
 188                 if (!value)
 189                         config_error_nonbool(var);
 190                 color_parse(value, var, parsed_color);
 191                 get_color_found = 1;
 192         }
 193         return 0;
 194 }
 195
 196 static int get_color(int argc, const char **argv)
 197 {
 198         /*
 199          * grab the color setting for the given slot from the configuration,
 200          * or parse the default value if missing, and return ANSI color
 201          * escape sequence.
 202          *
 203          * e.g.
 204          * git config --get-color color.diff.whitespace "blue reverse"
 205          */
 206         const char *def_color = NULL;
 207
 208         switch (argc) {
 209         default:
 210                 usage(git_config_set_usage);
 211         case 2:
 212                 def_color = argv[1];
 213                 /* fallthru */
 214         case 1:
 215                 get_color_slot = argv[0];
 216                 break;
 217         }
 218
 219         get_color_found = 0;
 220         parsed_color[0] = '\0';
 221         git_config(git_get_color_config);
 222
 223         if (!get_color_found && def_color)
 224                 color_parse(def_color, "command line", parsed_color);
 225
 226         fputs(parsed_color, stdout);
 227         return 0;
 228 }
 229
 230 static int stdout_is_tty;
 231 static int get_colorbool_found;
 232 static int get_diff_color_found;
 233 static int git_get_colorbool_config(const char *var, const char *value)
 234 {
 235         if (!strcmp(var, get_color_slot)) {
 236                 get_colorbool_found =
 237                         git_config_colorbool(var, value, stdout_is_tty);
 238         }
 239         if (!strcmp(var, "diff.color")) {
 240                 get_diff_color_found =
 241                         git_config_colorbool(var, value, stdout_is_tty);
 242         }
 243         return 0;
 244 }
 245
 246 static int get_colorbool(int argc, const char **argv)
 247 {
 248         /*
 249          * git config --get-colorbool <slot> [<stdout-is-tty>]
 250          *
 251          * returns "true" or "false" depending on how <slot>
 252          * is configured.
 253          */
 254
 255         if (argc == 2)
 256                 stdout_is_tty = git_config_bool("command line", argv[1]);
 257         else if (argc == 1)
 258                 stdout_is_tty = isatty(1);
 259         else
 260                 usage(git_config_set_usage);
 261         get_colorbool_found = -1;
 262         get_diff_color_found = -1;
 263         get_color_slot = argv[0];
 264         git_config(git_get_colorbool_config);
 265
 266         if (get_colorbool_found < 0) {
 267                 if (!strcmp(get_color_slot, "color.diff"))
 268                         get_colorbool_found = get_diff_color_found;
 269                 if (get_colorbool_found < 0)
 270                         get_colorbool_found = 0;
 271         }
 272
 273         if (argc == 1) {
 274                 return get_colorbool_found ? 0 : 1;
 275         } else {
 276                 printf("%s\n", get_colorbool_found ? "true" : "false");
 277                 return 0;
 278         }
 279 }
 280
 281 int cmd_config(int argc, const char **argv, const char *prefix)
 282 {
 283         int nongit;
 284         char* value;
 285         const char *file = setup_git_directory_gently(&nongit);
 286
 287         while (1 < argc) {
 288                 if (!strcmp(argv[1], "--int"))
 289                         type = T_INT;
 290                 else if (!strcmp(argv[1], "--bool"))
 291                         type = T_BOOL;
 292                 else if (!strcmp(argv[1], "--bool-or-int"))
 293                         type = T_BOOL_OR_INT;
 294                 else if (!strcmp(argv[1], "--list") || !strcmp(argv[1], "-l")) {
 295                         if (argc != 2)
 296                                 usage(git_config_set_usage);
 297                         if (git_config(show_all_config) < 0 && file && errno)
 298                                 die("unable to read config file %s: %s", file,
 299                                     strerror(errno));
 300                         return 0;
 301                 }
 302                 else if (!strcmp(argv[1], "--global")) {
 303                         char *home = getenv("HOME");
 304                         if (home) {
 305                                 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
 306                                 setenv(CONFIG_ENVIRONMENT, user_config, 1);
 307                                 free(user_config);
 308                         } else {
 309                                 die("$HOME not set");
 310                         }
 311                 }
 312                 else if (!strcmp(argv[1], "--system"))
 313                         setenv(CONFIG_ENVIRONMENT, git_etc_gitconfig(), 1);
 314                 else if (!strcmp(argv[1], "--file") || !strcmp(argv[1], "-f")) {
 315                         if (argc < 3)
 316                                 usage(git_config_set_usage);
 317                         if (!is_absolute_path(argv[2]) && file)
 318                                 file = prefix_filename(file, strlen(file),
 319                                                        argv[2]);
 320                         else
 321                                 file = argv[2];
 322                         setenv(CONFIG_ENVIRONMENT, file, 1);
 323                         argc--;
 324                         argv++;
 325                 }
 326                 else if (!strcmp(argv[1], "--null") || !strcmp(argv[1], "-z")) {
 327                         term = '\0';
 328                         delim = '\n';
 329                         key_delim = '\n';
 330                 }
 331                 else if (!strcmp(argv[1], "--rename-section")) {
 332                         int ret;
 333                         if (argc != 4)
 334                                 usage(git_config_set_usage);
 335                         ret = git_config_rename_section(argv[2], argv[3]);
 336                         if (ret < 0)
 337                                 return ret;
 338                         if (ret == 0) {
 339                                 fprintf(stderr, "No such section!\n");
 340                                 return 1;
 341                         }
 342                         return 0;
 343                 }
 344                 else if (!strcmp(argv[1], "--remove-section")) {
 345                         int ret;
 346                         if (argc != 3)
 347                                 usage(git_config_set_usage);
 348                         ret = git_config_rename_section(argv[2], NULL);
 349                         if (ret < 0)
 350                                 return ret;
 351                         if (ret == 0) {
 352                                 fprintf(stderr, "No such section!\n");
 353                                 return 1;
 354                         }
 355                         return 0;
 356                 } else if (!strcmp(argv[1], "--get-color")) {
 357                         return get_color(argc-2, argv+2);
 358                 } else if (!strcmp(argv[1], "--get-colorbool")) {
 359                         return get_colorbool(argc-2, argv+2);
 360                 } else
 361                         break;
 362                 argc--;
 363                 argv++;
 364         }
 365
 366         switch (argc) {
 367         case 2:
 368                 return get_value(argv[1], NULL);
 369         case 3:
 370                 if (!strcmp(argv[1], "--unset"))
 371                         return git_config_set(argv[2], NULL);
 372                 else if (!strcmp(argv[1], "--unset-all"))
 373                         return git_config_set_multivar(argv[2], NULL, NULL, 1);
 374                 else if (!strcmp(argv[1], "--get"))
 375                         return get_value(argv[2], NULL);
 376                 else if (!strcmp(argv[1], "--get-all")) {
 377                         do_all = 1;
 378                         return get_value(argv[2], NULL);
 379                 } else if (!strcmp(argv[1], "--get-regexp")) {
 380                         show_keys = 1;
 381                         use_key_regexp = 1;
 382                         do_all = 1;
 383                         return get_value(argv[2], NULL);
 384                 } else {
 385                         value = normalize_value(argv[1], argv[2]);
 386                         return git_config_set(argv[1], value);
 387                 }
 388         case 4:
 389                 if (!strcmp(argv[1], "--unset"))
 390                         return git_config_set_multivar(argv[2], NULL, argv[3], 0);
 391                 else if (!strcmp(argv[1], "--unset-all"))
 392                         return git_config_set_multivar(argv[2], NULL, argv[3], 1);
 393                 else if (!strcmp(argv[1], "--get"))
 394                         return get_value(argv[2], argv[3]);
 395                 else if (!strcmp(argv[1], "--get-all")) {
 396                         do_all = 1;
 397                         return get_value(argv[2], argv[3]);
 398                 } else if (!strcmp(argv[1], "--get-regexp")) {
 399                         show_keys = 1;
 400                         use_key_regexp = 1;
 401                         do_all = 1;
 402                         return get_value(argv[2], argv[3]);
 403                 } else if (!strcmp(argv[1], "--add")) {
 404                         value = normalize_value(argv[2], argv[3]);
 405                         return git_config_set_multivar(argv[2], value, "^$", 0);
 406                 } else if (!strcmp(argv[1], "--replace-all")) {
 407                         value = normalize_value(argv[2], argv[3]);
 408                         return git_config_set_multivar(argv[2], value, NULL, 1);
 409                 } else {
 410                         value = normalize_value(argv[1], argv[2]);
 411                         return git_config_set_multivar(argv[1], value, argv[3], 0);
 412                 }
 413         case 5:
 414                 if (!strcmp(argv[1], "--replace-all")) {
 415                         value = normalize_value(argv[2], argv[3]);
 416                         return git_config_set_multivar(argv[2], value, argv[4], 1);
 417                 }
 418         case 1:
 419         default:
 420                 usage(git_config_set_usage);
 421         }
 422         return 0;
 423 }