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_, void *cb)
  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_, void *cb)
  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 = config_exclusive_filename;
  85         if (!local) {
  86                 const char *home = getenv("HOME");
  87                 local = repo_config = git_pathdup("config");
  88                 if (git_config_global() && home)
  89                         global = xstrdup(mkpath("%s/.gitconfig", home));
  90                 if (git_config_system())
  91                         system_wide = git_etc_gitconfig();
  92         }
  93
  94         key = xstrdup(key_);
  95         for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
  96                 *tl = tolower(*tl);
  97         for (tl=key; *tl && *tl != '.'; ++tl)
  98                 *tl = tolower(*tl);
  99
 100         if (use_key_regexp) {
 101                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 102                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 103                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 104                         goto free_strings;
 105                 }
 106         }
 107
 108         if (regex_) {
 109                 if (regex_[0] == '!') {
 110                         do_not_match = 1;
 111                         regex_++;
 112                 }
 113
 114                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 115                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 116                         fprintf(stderr, "Invalid pattern: %s\n", regex_);
 117                         goto free_strings;
 118                 }
 119         }
 120
 121         if (do_all && system_wide)
 122                 git_config_from_file(show_config, system_wide, NULL);
 123         if (do_all && global)
 124                 git_config_from_file(show_config, global, NULL);
 125         git_config_from_file(show_config, local, NULL);
 126         if (!do_all && !seen && global)
 127                 git_config_from_file(show_config, global, NULL);
 128         if (!do_all && !seen && system_wide)
 129                 git_config_from_file(show_config, system_wide, NULL);
 130
 131         free(key);
 132         if (regexp) {
 133                 regfree(regexp);
 134                 free(regexp);
 135         }
 136
 137         if (do_all)
 138                 ret = !seen;
 139         else
 140                 ret = (seen == 1) ? 0 : seen > 1 ? 2 : 1;
 141
 142 free_strings:
 143         free(repo_config);
 144         free(global);
 145         return ret;
 146 }
 147
 148 static char *normalize_value(const char *key, const char *value)
 149 {
 150         char *normalized;
 151
 152         if (!value)
 153                 return NULL;
 154
 155         if (type == T_RAW)
 156                 normalized = xstrdup(value);
 157         else {
 158                 normalized = xmalloc(64);
 159                 if (type == T_INT) {
 160                         int v = git_config_int(key, value);
 161                         sprintf(normalized, "%d", v);
 162                 }
 163                 else if (type == T_BOOL)
 164                         sprintf(normalized, "%s",
 165                                 git_config_bool(key, value) ? "true" : "false");
 166                 else if (type == T_BOOL_OR_INT) {
 167                         int is_bool, v;
 168                         v = git_config_bool_or_int(key, value, &is_bool);
 169                         if (!is_bool)
 170                                 sprintf(normalized, "%d", v);
 171                         else
 172                                 sprintf(normalized, "%s", v ? "true" : "false");
 173                 }
 174         }
 175
 176         return normalized;
 177 }
 178
 179 static int get_color_found;
 180 static const char *get_color_slot;
 181 static char parsed_color[COLOR_MAXLEN];
 182
 183 static int git_get_color_config(const char *var, const char *value, void *cb)
 184 {
 185         if (!strcmp(var, get_color_slot)) {
 186                 if (!value)
 187                         config_error_nonbool(var);
 188                 color_parse(value, var, parsed_color);
 189                 get_color_found = 1;
 190         }
 191         return 0;
 192 }
 193
 194 static int get_color(int argc, const char **argv)
 195 {
 196         /*
 197          * grab the color setting for the given slot from the configuration,
 198          * or parse the default value if missing, and return ANSI color
 199          * escape sequence.
 200          *
 201          * e.g.
 202          * git config --get-color color.diff.whitespace "blue reverse"
 203          */
 204         const char *def_color = NULL;
 205
 206         switch (argc) {
 207         default:
 208                 usage(git_config_set_usage);
 209         case 2:
 210                 def_color = argv[1];
 211                 /* fallthru */
 212         case 1:
 213                 get_color_slot = argv[0];
 214                 break;
 215         }
 216
 217         get_color_found = 0;
 218         parsed_color[0] = '\0';
 219         git_config(git_get_color_config, NULL);
 220
 221         if (!get_color_found && def_color)
 222                 color_parse(def_color, "command line", parsed_color);
 223
 224         fputs(parsed_color, stdout);
 225         return 0;
 226 }
 227
 228 static int stdout_is_tty;
 229 static int get_colorbool_found;
 230 static int get_diff_color_found;
 231 static int git_get_colorbool_config(const char *var, const char *value,
 232                 void *cb)
 233 {
 234         if (!strcmp(var, get_color_slot)) {
 235                 get_colorbool_found =
 236                         git_config_colorbool(var, value, stdout_is_tty);
 237         }
 238         if (!strcmp(var, "diff.color")) {
 239                 get_diff_color_found =
 240                         git_config_colorbool(var, value, stdout_is_tty);
 241         }
 242         if (!strcmp(var, "color.ui")) {
 243                 git_use_color_default = git_config_colorbool(var, value, stdout_is_tty);
 244                 return 0;
 245         }
 246         return 0;
 247 }
 248
 249 static int get_colorbool(int argc, const char **argv)
 250 {
 251         /*
 252          * git config --get-colorbool <slot> [<stdout-is-tty>]
 253          *
 254          * returns "true" or "false" depending on how <slot>
 255          * is configured.
 256          */
 257
 258         if (argc == 2)
 259                 stdout_is_tty = git_config_bool("command line", argv[1]);
 260         else if (argc == 1)
 261                 stdout_is_tty = isatty(1);
 262         else
 263                 usage(git_config_set_usage);
 264         get_colorbool_found = -1;
 265         get_diff_color_found = -1;
 266         get_color_slot = argv[0];
 267         git_config(git_get_colorbool_config, NULL);
 268
 269         if (get_colorbool_found < 0) {
 270                 if (!strcmp(get_color_slot, "color.diff"))
 271                         get_colorbool_found = get_diff_color_found;
 272                 if (get_colorbool_found < 0)
 273                         get_colorbool_found = git_use_color_default;
 274         }
 275
 276         if (argc == 1) {
 277                 return get_colorbool_found ? 0 : 1;
 278         } else {
 279                 printf("%s\n", get_colorbool_found ? "true" : "false");
 280                 return 0;
 281         }
 282 }
 283
 284 int cmd_config(int argc, const char **argv, const char *prefix)
 285 {
 286         int nongit;
 287         char* value;
 288         const char *file = setup_git_directory_gently(&nongit);
 289
 290         config_exclusive_filename = getenv(CONFIG_ENVIRONMENT);
 291
 292         while (1 < argc) {
 293                 if (!strcmp(argv[1], "--int"))
 294                         type = T_INT;
 295                 else if (!strcmp(argv[1], "--bool"))
 296                         type = T_BOOL;
 297                 else if (!strcmp(argv[1], "--bool-or-int"))
 298                         type = T_BOOL_OR_INT;
 299                 else if (!strcmp(argv[1], "--list") || !strcmp(argv[1], "-l")) {
 300                         if (argc != 2)
 301                                 usage(git_config_set_usage);
 302                         if (git_config(show_all_config, NULL) < 0 &&
 303                                         file && errno)
 304                                 die("unable to read config file %s: %s", file,
 305                                     strerror(errno));
 306                         return 0;
 307                 }
 308                 else if (!strcmp(argv[1], "--global")) {
 309                         char *home = getenv("HOME");
 310                         if (home) {
 311                                 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
 312                                 config_exclusive_filename = user_config;
 313                         } else {
 314                                 die("$HOME not set");
 315                         }
 316                 }
 317                 else if (!strcmp(argv[1], "--system"))
 318                         config_exclusive_filename = git_etc_gitconfig();
 319                 else if (!strcmp(argv[1], "--file") || !strcmp(argv[1], "-f")) {
 320                         if (argc < 3)
 321                                 usage(git_config_set_usage);
 322                         if (!is_absolute_path(argv[2]) && file)
 323                                 file = prefix_filename(file, strlen(file),
 324                                                        argv[2]);
 325                         else
 326                                 file = argv[2];
 327                         config_exclusive_filename = file;
 328                         argc--;
 329                         argv++;
 330                 }
 331                 else if (!strcmp(argv[1], "--null") || !strcmp(argv[1], "-z")) {
 332                         term = '\0';
 333                         delim = '\n';
 334                         key_delim = '\n';
 335                 }
 336                 else if (!strcmp(argv[1], "--rename-section")) {
 337                         int ret;
 338                         if (argc != 4)
 339                                 usage(git_config_set_usage);
 340                         ret = git_config_rename_section(argv[2], argv[3]);
 341                         if (ret < 0)
 342                                 return ret;
 343                         if (ret == 0) {
 344                                 fprintf(stderr, "No such section!\n");
 345                                 return 1;
 346                         }
 347                         return 0;
 348                 }
 349                 else if (!strcmp(argv[1], "--remove-section")) {
 350                         int ret;
 351                         if (argc != 3)
 352                                 usage(git_config_set_usage);
 353                         ret = git_config_rename_section(argv[2], NULL);
 354                         if (ret < 0)
 355                                 return ret;
 356                         if (ret == 0) {
 357                                 fprintf(stderr, "No such section!\n");
 358                                 return 1;
 359                         }
 360                         return 0;
 361                 } else if (!strcmp(argv[1], "--get-color")) {
 362                         return get_color(argc-2, argv+2);
 363                 } else if (!strcmp(argv[1], "--get-colorbool")) {
 364                         return get_colorbool(argc-2, argv+2);
 365                 } else
 366                         break;
 367                 argc--;
 368                 argv++;
 369         }
 370
 371         switch (argc) {
 372         case 2:
 373                 return get_value(argv[1], NULL);
 374         case 3:
 375                 if (!strcmp(argv[1], "--unset"))
 376                         return git_config_set(argv[2], NULL);
 377                 else if (!strcmp(argv[1], "--unset-all"))
 378                         return git_config_set_multivar(argv[2], NULL, NULL, 1);
 379                 else if (!strcmp(argv[1], "--get"))
 380                         return get_value(argv[2], NULL);
 381                 else if (!strcmp(argv[1], "--get-all")) {
 382                         do_all = 1;
 383                         return get_value(argv[2], NULL);
 384                 } else if (!strcmp(argv[1], "--get-regexp")) {
 385                         show_keys = 1;
 386                         use_key_regexp = 1;
 387                         do_all = 1;
 388                         return get_value(argv[2], NULL);
 389                 } else {
 390                         value = normalize_value(argv[1], argv[2]);
 391                         return git_config_set(argv[1], value);
 392                 }
 393         case 4:
 394                 if (!strcmp(argv[1], "--unset"))
 395                         return git_config_set_multivar(argv[2], NULL, argv[3], 0);
 396                 else if (!strcmp(argv[1], "--unset-all"))
 397                         return git_config_set_multivar(argv[2], NULL, argv[3], 1);
 398                 else if (!strcmp(argv[1], "--get"))
 399                         return get_value(argv[2], argv[3]);
 400                 else if (!strcmp(argv[1], "--get-all")) {
 401                         do_all = 1;
 402                         return get_value(argv[2], argv[3]);
 403                 } else if (!strcmp(argv[1], "--get-regexp")) {
 404                         show_keys = 1;
 405                         use_key_regexp = 1;
 406                         do_all = 1;
 407                         return get_value(argv[2], argv[3]);
 408                 } else if (!strcmp(argv[1], "--add")) {
 409                         value = normalize_value(argv[2], argv[3]);
 410                         return git_config_set_multivar(argv[2], value, "^$", 0);
 411                 } else if (!strcmp(argv[1], "--replace-all")) {
 412                         value = normalize_value(argv[2], argv[3]);
 413                         return git_config_set_multivar(argv[2], value, NULL, 1);
 414                 } else {
 415                         value = normalize_value(argv[1], argv[2]);
 416                         return git_config_set_multivar(argv[1], value, argv[3], 0);
 417                 }
 418         case 5:
 419                 if (!strcmp(argv[1], "--replace-all")) {
 420                         value = normalize_value(argv[2], argv[3]);
 421                         return git_config_set_multivar(argv[2], value, argv[4], 1);
 422                 }
 423         case 1:
 424         default:
 425                 usage(git_config_set_usage);
 426         }
 427         return 0;
 428 }