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                 if (!value)
 172                         config_error_nonbool(var);
 173                 color_parse(value, var, parsed_color);
 174                 get_color_found = 1;
 175         }
 176         return 0;
 177 }
 178
 179 static int get_color(int argc, const char **argv)
 180 {
 181         /*
 182          * grab the color setting for the given slot from the configuration,
 183          * or parse the default value if missing, and return ANSI color
 184          * escape sequence.
 185          *
 186          * e.g.
 187          * git config --get-color color.diff.whitespace "blue reverse"
 188          */
 189         const char *def_color = NULL;
 190
 191         switch (argc) {
 192         default:
 193                 usage(git_config_set_usage);
 194         case 2:
 195                 def_color = argv[1];
 196                 /* fallthru */
 197         case 1:
 198                 get_color_slot = argv[0];
 199                 break;
 200         }
 201
 202         get_color_found = 0;
 203         parsed_color[0] = '\0';
 204         git_config(git_get_color_config);
 205
 206         if (!get_color_found && def_color)
 207                 color_parse(def_color, "command line", parsed_color);
 208
 209         fputs(parsed_color, stdout);
 210         return 0;
 211 }
 212
 213 static int stdout_is_tty;
 214 static int get_colorbool_found;
 215 static int get_diff_color_found;
 216 static int git_get_colorbool_config(const char *var, const char *value)
 217 {
 218         if (!strcmp(var, get_color_slot)) {
 219                 get_colorbool_found =
 220                         git_config_colorbool(var, value, stdout_is_tty);
 221         }
 222         if (!strcmp(var, "diff.color")) {
 223                 get_diff_color_found =
 224                         git_config_colorbool(var, value, stdout_is_tty);
 225         }
 226         return 0;
 227 }
 228
 229 static int get_colorbool(int argc, const char **argv)
 230 {
 231         /*
 232          * git config --get-colorbool <slot> [<stdout-is-tty>]
 233          *
 234          * returns "true" or "false" depending on how <slot>
 235          * is configured.
 236          */
 237
 238         if (argc == 2)
 239                 stdout_is_tty = git_config_bool("command line", argv[1]);
 240         else if (argc == 1)
 241                 stdout_is_tty = isatty(1);
 242         else
 243                 usage(git_config_set_usage);
 244         get_colorbool_found = -1;
 245         get_diff_color_found = -1;
 246         get_color_slot = argv[0];
 247         git_config(git_get_colorbool_config);
 248
 249         if (get_colorbool_found < 0) {
 250                 if (!strcmp(get_color_slot, "color.diff"))
 251                         get_colorbool_found = get_diff_color_found;
 252                 if (get_colorbool_found < 0)
 253                         get_colorbool_found = 0;
 254         }
 255
 256         if (argc == 1) {
 257                 return get_colorbool_found ? 0 : 1;
 258         } else {
 259                 printf("%s\n", get_colorbool_found ? "true" : "false");
 260                 return 0;
 261         }
 262 }
 263
 264 int cmd_config(int argc, const char **argv, const char *prefix)
 265 {
 266         int nongit = 0;
 267         char* value;
 268         const char *file = setup_git_directory_gently(&nongit);
 269
 270         while (1 < argc) {
 271                 if (!strcmp(argv[1], "--int"))
 272                         type = T_INT;
 273                 else if (!strcmp(argv[1], "--bool"))
 274                         type = T_BOOL;
 275                 else if (!strcmp(argv[1], "--list") || !strcmp(argv[1], "-l")) {
 276                         if (argc != 2)
 277                                 usage(git_config_set_usage);
 278                         if (git_config(show_all_config) < 0 && file && errno)
 279                                 die("unable to read config file %s: %s", file,
 280                                     strerror(errno));
 281                         return 0;
 282                 }
 283                 else if (!strcmp(argv[1], "--global")) {
 284                         char *home = getenv("HOME");
 285                         if (home) {
 286                                 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
 287                                 setenv(CONFIG_ENVIRONMENT, user_config, 1);
 288                                 free(user_config);
 289                         } else {
 290                                 die("$HOME not set");
 291                         }
 292                 }
 293                 else if (!strcmp(argv[1], "--system"))
 294                         setenv(CONFIG_ENVIRONMENT, git_etc_gitconfig(), 1);
 295                 else if (!strcmp(argv[1], "--file") || !strcmp(argv[1], "-f")) {
 296                         if (argc < 3)
 297                                 usage(git_config_set_usage);
 298                         if (!is_absolute_path(argv[2]) && file)
 299                                 file = prefix_filename(file, strlen(file),
 300                                                        argv[2]);
 301                         else
 302                                 file = argv[2];
 303                         setenv(CONFIG_ENVIRONMENT, file, 1);
 304                         argc--;
 305                         argv++;
 306                 }
 307                 else if (!strcmp(argv[1], "--null") || !strcmp(argv[1], "-z")) {
 308                         term = '\0';
 309                         delim = '\n';
 310                         key_delim = '\n';
 311                 }
 312                 else if (!strcmp(argv[1], "--rename-section")) {
 313                         int ret;
 314                         if (argc != 4)
 315                                 usage(git_config_set_usage);
 316                         ret = git_config_rename_section(argv[2], argv[3]);
 317                         if (ret < 0)
 318                                 return ret;
 319                         if (ret == 0) {
 320                                 fprintf(stderr, "No such section!\n");
 321                                 return 1;
 322                         }
 323                         return 0;
 324                 }
 325                 else if (!strcmp(argv[1], "--remove-section")) {
 326                         int ret;
 327                         if (argc != 3)
 328                                 usage(git_config_set_usage);
 329                         ret = git_config_rename_section(argv[2], NULL);
 330                         if (ret < 0)
 331                                 return ret;
 332                         if (ret == 0) {
 333                                 fprintf(stderr, "No such section!\n");
 334                                 return 1;
 335                         }
 336                         return 0;
 337                 } else if (!strcmp(argv[1], "--get-color")) {
 338                         return get_color(argc-2, argv+2);
 339                 } else if (!strcmp(argv[1], "--get-colorbool")) {
 340                         return get_colorbool(argc-2, argv+2);
 341                 } else
 342                         break;
 343                 argc--;
 344                 argv++;
 345         }
 346
 347         switch (argc) {
 348         case 2:
 349                 return get_value(argv[1], NULL);
 350         case 3:
 351                 if (!strcmp(argv[1], "--unset"))
 352                         return git_config_set(argv[2], NULL);
 353                 else if (!strcmp(argv[1], "--unset-all"))
 354                         return git_config_set_multivar(argv[2], NULL, NULL, 1);
 355                 else if (!strcmp(argv[1], "--get"))
 356                         return get_value(argv[2], NULL);
 357                 else if (!strcmp(argv[1], "--get-all")) {
 358                         do_all = 1;
 359                         return get_value(argv[2], NULL);
 360                 } else if (!strcmp(argv[1], "--get-regexp")) {
 361                         show_keys = 1;
 362                         use_key_regexp = 1;
 363                         do_all = 1;
 364                         return get_value(argv[2], NULL);
 365                 } else {
 366                         value = normalize_value(argv[1], argv[2]);
 367                         return git_config_set(argv[1], value);
 368                 }
 369         case 4:
 370                 if (!strcmp(argv[1], "--unset"))
 371                         return git_config_set_multivar(argv[2], NULL, argv[3], 0);
 372                 else if (!strcmp(argv[1], "--unset-all"))
 373                         return git_config_set_multivar(argv[2], NULL, argv[3], 1);
 374                 else if (!strcmp(argv[1], "--get"))
 375                         return get_value(argv[2], argv[3]);
 376                 else if (!strcmp(argv[1], "--get-all")) {
 377                         do_all = 1;
 378                         return get_value(argv[2], argv[3]);
 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], argv[3]);
 384                 } else if (!strcmp(argv[1], "--add")) {
 385                         value = normalize_value(argv[2], argv[3]);
 386                         return git_config_set_multivar(argv[2], value, "^$", 0);
 387                 } else if (!strcmp(argv[1], "--replace-all")) {
 388                         value = normalize_value(argv[2], argv[3]);
 389                         return git_config_set_multivar(argv[2], value, NULL, 1);
 390                 } else {
 391                         value = normalize_value(argv[1], argv[2]);
 392                         return git_config_set_multivar(argv[1], value, argv[3], 0);
 393                 }
 394         case 5:
 395                 if (!strcmp(argv[1], "--replace-all")) {
 396                         value = normalize_value(argv[2], argv[3]);
 397                         return git_config_set_multivar(argv[2], value, argv[4], 1);
 398                 }
 399         case 1:
 400         default:
 401                 usage(git_config_set_usage);
 402         }
 403         return 0;
 404 }