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