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