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 const char *value_match;
  12 static int show_keys;
  13 static int use_key_regexp;
  14 static int do_all;
  15 static int do_not_match;
  16 static int seen;
  17 static char delim = '=';
  18 static char key_delim = ' ';
  19 static char term = '\n';
  20 static enum { T_RAW, T_INT, T_BOOL } type = T_RAW;
  21 static int literal_match = 0;
  22
  23 static int show_all_config(const char *key_, const char *value_)
  24 {
  25         if (value_)
  26                 printf("%s%c%s%c", key_, delim, value_, term);
  27         else
  28                 printf("%s%c", key_, term);
  29         return 0;
  30 }
  31
  32 static int show_config(const char* key_, const char* value_)
  33 {
  34         char value[256];
  35         const char *vptr = value;
  36         int dup_error = 0;
  37
  38         if (!use_key_regexp && strcmp(key_, key))
  39                 return 0;
  40         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
  41                 return 0;
  42         if (regexp != NULL &&
  43             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
  44                 return 0;
  45         if (value_match != NULL &&
  46                 do_not_match ^ !!strcmp(value_match, (value_ ? value_ : "")))
  47                 return 0;
  48
  49         if (show_keys) {
  50                 if (value_)
  51                         printf("%s%c", key_, key_delim);
  52                 else
  53                         printf("%s", key_);
  54         }
  55         if (seen && !do_all)
  56                 dup_error = 1;
  57         if (type == T_INT)
  58                 sprintf(value, "%d", git_config_int(key_, value_?value_:""));
  59         else if (type == T_BOOL)
  60                 vptr = git_config_bool(key_, value_) ? "true" : "false";
  61         else
  62                 vptr = value_?value_:"";
  63         seen++;
  64         if (dup_error) {
  65                 error("More than one value for the key %s: %s",
  66                                 key_, vptr);
  67         }
  68         else
  69                 printf("%s%c", vptr, term);
  70
  71         return 0;
  72 }
  73
  74 static int get_value(const char* key_, const char* match_)
  75 {
  76         int ret = -1;
  77         char *tl;
  78         char *global = NULL, *repo_config = NULL;
  79         const char *system_wide = NULL, *local;
  80
  81         local = getenv(CONFIG_ENVIRONMENT);
  82         if (!local) {
  83                 const char *home = getenv("HOME");
  84                 local = getenv(CONFIG_LOCAL_ENVIRONMENT);
  85                 if (!local)
  86                         local = repo_config = xstrdup(git_path("config"));
  87                 if (git_config_global() && home)
  88                         global = xstrdup(mkpath("%s/.gitconfig", home));
  89                 if (git_config_system())
  90                         system_wide = git_etc_gitconfig();
  91         }
  92
  93         key = xstrdup(key_);
  94         for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
  95                 *tl = tolower(*tl);
  96         for (tl=key; *tl && *tl != '.'; ++tl)
  97                 *tl = tolower(*tl);
  98
  99         if (use_key_regexp) {
 100                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 101                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 102                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 103                         goto free_strings;
 104                 }
 105         }
 106
 107         if (match_ && literal_match) {
 108                 value_match = match_;
 109                 do_not_match = 0;
 110                 regexp = NULL;
 111         }
 112         else if(match_) {
 113                 value_match = NULL;
 114                 if (match_[0] == '!') {
 115                         do_not_match = 1;
 116                         match_++;
 117                 }
 118
 119                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 120                 if (regcomp(regexp, match_, REG_EXTENDED)) {
 121                         fprintf(stderr, "Invalid pattern: %s\n", match_);
 122                         goto free_strings;
 123                 }
 124         }
 125         else {
 126                 value_match = NULL;
 127                 regexp = NULL;
 128         }
 129
 130         if (do_all && system_wide)
 131                 git_config_from_file(show_config, system_wide);
 132         if (do_all && global)
 133                 git_config_from_file(show_config, global);
 134         git_config_from_file(show_config, local);
 135         if (!do_all && !seen && global)
 136                 git_config_from_file(show_config, global);
 137         if (!do_all && !seen && system_wide)
 138                 git_config_from_file(show_config, system_wide);
 139
 140         free(key);
 141         if (regexp) {
 142                 regfree(regexp);
 143                 free(regexp);
 144         }
 145
 146         if (do_all)
 147                 ret = !seen;
 148         else
 149                 ret = (seen == 1) ? 0 : seen > 1 ? 2 : 1;
 150
 151 free_strings:
 152         free(repo_config);
 153         free(global);
 154         return ret;
 155 }
 156
 157 char *normalize_value(const char *key, const char *value)
 158 {
 159         char *normalized;
 160
 161         if (!value)
 162                 return NULL;
 163
 164         if (type == T_RAW)
 165                 normalized = xstrdup(value);
 166         else {
 167                 normalized = xmalloc(64);
 168                 if (type == T_INT) {
 169                         int v = git_config_int(key, value);
 170                         sprintf(normalized, "%d", v);
 171                 }
 172                 else if (type == T_BOOL)
 173                         sprintf(normalized, "%s",
 174                                 git_config_bool(key, value) ? "true" : "false");
 175         }
 176
 177         return normalized;
 178 }
 179
 180 static int get_color_found;
 181 static const char *get_color_slot;
 182 static char parsed_color[COLOR_MAXLEN];
 183
 184 static int git_get_color_config(const char *var, const char *value)
 185 {
 186         if (!strcmp(var, get_color_slot)) {
 187                 if (!value)
 188                         config_error_nonbool(var);
 189                 color_parse(value, var, parsed_color);
 190                 get_color_found = 1;
 191         }
 192         return 0;
 193 }
 194
 195 static int get_color(int argc, const char **argv)
 196 {
 197         /*
 198          * grab the color setting for the given slot from the configuration,
 199          * or parse the default value if missing, and return ANSI color
 200          * escape sequence.
 201          *
 202          * e.g.
 203          * git config --get-color color.diff.whitespace "blue reverse"
 204          */
 205         const char *def_color = NULL;
 206
 207         switch (argc) {
 208         default:
 209                 usage(git_config_set_usage);
 210         case 2:
 211                 def_color = argv[1];
 212                 /* fallthru */
 213         case 1:
 214                 get_color_slot = argv[0];
 215                 break;
 216         }
 217
 218         get_color_found = 0;
 219         parsed_color[0] = '\0';
 220         git_config(git_get_color_config);
 221
 222         if (!get_color_found && def_color)
 223                 color_parse(def_color, "command line", parsed_color);
 224
 225         fputs(parsed_color, stdout);
 226         return 0;
 227 }
 228
 229 static int stdout_is_tty;
 230 static int get_colorbool_found;
 231 static int get_diff_color_found;
 232 static int git_get_colorbool_config(const char *var, const char *value)
 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         return 0;
 243 }
 244
 245 static int get_colorbool(int argc, const char **argv)
 246 {
 247         /*
 248          * git config --get-colorbool <slot> [<stdout-is-tty>]
 249          *
 250          * returns "true" or "false" depending on how <slot>
 251          * is configured.
 252          */
 253
 254         if (argc == 2)
 255                 stdout_is_tty = git_config_bool("command line", argv[1]);
 256         else if (argc == 1)
 257                 stdout_is_tty = isatty(1);
 258         else
 259                 usage(git_config_set_usage);
 260         get_colorbool_found = -1;
 261         get_diff_color_found = -1;
 262         get_color_slot = argv[0];
 263         git_config(git_get_colorbool_config);
 264
 265         if (get_colorbool_found < 0) {
 266                 if (!strcmp(get_color_slot, "color.diff"))
 267                         get_colorbool_found = get_diff_color_found;
 268                 if (get_colorbool_found < 0)
 269                         get_colorbool_found = 0;
 270         }
 271
 272         if (argc == 1) {
 273                 return get_colorbool_found ? 0 : 1;
 274         } else {
 275                 printf("%s\n", get_colorbool_found ? "true" : "false");
 276                 return 0;
 277         }
 278 }
 279
 280 int cmd_config(int argc, const char **argv, const char *prefix)
 281 {
 282         int nongit = 0;
 283         char* value;
 284         const char *file = setup_git_directory_gently(&nongit);
 285
 286         while (1 < argc) {
 287                 if (!strcmp(argv[1], "--int"))
 288                         type = T_INT;
 289                 else if (!strcmp(argv[1], "--bool"))
 290                         type = T_BOOL;
 291                 else if (!strcmp(argv[1], "--list") || !strcmp(argv[1], "-l")) {
 292                         if (argc != 2)
 293                                 usage(git_config_set_usage);
 294                         if (git_config(show_all_config) < 0 && file && errno)
 295                                 die("unable to read config file %s: %s", file,
 296                                     strerror(errno));
 297                         return 0;
 298                 }
 299                 else if (!strcmp(argv[1], "--global")) {
 300                         char *home = getenv("HOME");
 301                         if (home) {
 302                                 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
 303                                 setenv(CONFIG_ENVIRONMENT, user_config, 1);
 304                                 free(user_config);
 305                         } else {
 306                                 die("$HOME not set");
 307                         }
 308                 }
 309                 else if (!strcmp(argv[1], "--system"))
 310                         setenv(CONFIG_ENVIRONMENT, git_etc_gitconfig(), 1);
 311                 else if (!strcmp(argv[1], "--file") || !strcmp(argv[1], "-f")) {
 312                         if (argc < 3)
 313                                 usage(git_config_set_usage);
 314                         if (!is_absolute_path(argv[2]) && file)
 315                                 file = prefix_filename(file, strlen(file),
 316                                                        argv[2]);
 317                         else
 318                                 file = argv[2];
 319                         setenv(CONFIG_ENVIRONMENT, file, 1);
 320                         argc--;
 321                         argv++;
 322                 }
 323                 else if (!strcmp(argv[1], "--null") || !strcmp(argv[1], "-z")) {
 324                         term = '\0';
 325                         delim = '\n';
 326                         key_delim = '\n';
 327                 }
 328                 else if (!strcmp(argv[1], "--rename-section")) {
 329                         int ret;
 330                         if (argc != 4)
 331                                 usage(git_config_set_usage);
 332                         ret = git_config_rename_section(argv[2], argv[3]);
 333                         if (ret < 0)
 334                                 return ret;
 335                         if (ret == 0) {
 336                                 fprintf(stderr, "No such section!\n");
 337                                 return 1;
 338                         }
 339                         return 0;
 340                 }
 341                 else if (!strcmp(argv[1], "--remove-section")) {
 342                         int ret;
 343                         if (argc != 3)
 344                                 usage(git_config_set_usage);
 345                         ret = git_config_rename_section(argv[2], NULL);
 346                         if (ret < 0)
 347                                 return ret;
 348                         if (ret == 0) {
 349                                 fprintf(stderr, "No such section!\n");
 350                                 return 1;
 351                         }
 352                         return 0;
 353                 } else if (!strcmp(argv[1], "--get-color")) {
 354                         return get_color(argc-2, argv+2);
 355                 } else if (!strcmp(argv[1], "--get-colorbool")) {
 356                         return get_colorbool(argc-2, argv+2);
 357                 } else if (!strcmp(argv[1], "--literal-match")) {
 358                         literal_match = 1;
 359                 } else
 360                         break;
 361                 argc--;
 362                 argv++;
 363         }
 364
 365         switch (argc) {
 366         case 2:
 367                 return get_value(argv[1], NULL);
 368         case 3:
 369                 if (!strcmp(argv[1], "--unset"))
 370                         return git_config_set(argv[2], NULL);
 371                 else if (!strcmp(argv[1], "--unset-all"))
 372                         return git_config_set_multivar(argv[2], NULL, NULL,
 373                                         literal_match, 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],
 391                                         literal_match, 0);
 392                 else if (!strcmp(argv[1], "--unset-all"))
 393                         return git_config_set_multivar(argv[2], NULL, argv[3],
 394                                         literal_match, 1);
 395                 else if (!strcmp(argv[1], "--get"))
 396                         return get_value(argv[2], argv[3]);
 397                 else if (!strcmp(argv[1], "--get-all")) {
 398                         do_all = 1;
 399                         return get_value(argv[2], argv[3]);
 400                 } else if (!strcmp(argv[1], "--get-regexp")) {
 401                         show_keys = 1;
 402                         use_key_regexp = 1;
 403                         do_all = 1;
 404                         return get_value(argv[2], argv[3]);
 405                 } else if (!strcmp(argv[1], "--add")) {
 406                         value = normalize_value(argv[2], argv[3]);
 407                         return git_config_set_multivar(argv[2], value, "^$",
 408                                         0, 0);
 409                 } else if (!strcmp(argv[1], "--replace-all")) {
 410                         value = normalize_value(argv[2], argv[3]);
 411                         return git_config_set_multivar(argv[2], value, NULL,
 412                                         0, 1);
 413                 } else {
 414                         value = normalize_value(argv[1], argv[2]);
 415                         return git_config_set_multivar(argv[1], value, argv[3],
 416                                        literal_match, 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],
 422                                         literal_match, 1);
 423                 }
 424         case 1:
 425         default:
 426                 usage(git_config_set_usage);
 427         }
 428         return 0;
 429 }