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]";
   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 ^
  42                           regexec(regexp, (value_?value_:""), 0, NULL, 0)))
  43                 return 0;
  44
  45         if (show_keys) {
  46                 if (value_)
  47                         printf("%s%c", key_, key_delim);
  48                 else
  49                         printf("%s", key_);
  50         }
  51         if (seen && !do_all)
  52                 dup_error = 1;
  53         if (type == T_INT)
  54                 sprintf(value, "%d", git_config_int(key_, value_?value_:""));
  55         else if (type == T_BOOL)
  56                 vptr = git_config_bool(key_, value_) ? "true" : "false";
  57         else
  58                 vptr = value_?value_:"";
  59         seen++;
  60         if (dup_error) {
  61                 error("More than one value for the key %s: %s",
  62                                 key_, vptr);
  63         }
  64         else
  65                 printf("%s%c", vptr, term);
  66
  67         return 0;
  68 }
  69
  70 static int get_value(const char* key_, const char* regex_)
  71 {
  72         int ret = -1;
  73         char *tl;
  74         char *global = NULL, *repo_config = NULL;
  75         const char *system_wide = NULL, *local;
  76
  77         local = getenv(CONFIG_ENVIRONMENT);
  78         if (!local) {
  79                 const char *home = getenv("HOME");
  80                 local = getenv(CONFIG_LOCAL_ENVIRONMENT);
  81                 if (!local)
  82                         local = repo_config = xstrdup(git_path("config"));
  83                 if (home)
  84                         global = xstrdup(mkpath("%s/.gitconfig", home));
  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                 color_parse(value, var, parsed_color);
 173                 get_color_found = 1;
 174         }
 175         return 0;
 176 }
 177
 178 static int get_color(int argc, const char **argv)
 179 {
 180         /*
 181          * grab the color setting for the given slot from the configuration,
 182          * or parse the default value if missing, and return ANSI color
 183          * escape sequence.
 184          *
 185          * e.g.
 186          * git config --get-color color.diff.whitespace "blue reverse"
 187          */
 188         const char *def_color = NULL;
 189
 190         switch (argc) {
 191         default:
 192                 usage(git_config_set_usage);
 193         case 2:
 194                 def_color = argv[1];
 195                 /* fallthru */
 196         case 1:
 197                 get_color_slot = argv[0];
 198                 break;
 199         }
 200
 201         get_color_found = 0;
 202         parsed_color[0] = '\0';
 203         git_config(git_get_color_config);
 204
 205         if (!get_color_found && def_color)
 206                 color_parse(def_color, "command line", parsed_color);
 207
 208         fputs(parsed_color, stdout);
 209         return 0;
 210 }
 211
 212 int cmd_config(int argc, const char **argv, const char *prefix)
 213 {
 214         int nongit = 0;
 215         char* value;
 216         const char *file = setup_git_directory_gently(&nongit);
 217
 218         while (1 < argc) {
 219                 if (!strcmp(argv[1], "--int"))
 220                         type = T_INT;
 221                 else if (!strcmp(argv[1], "--bool"))
 222                         type = T_BOOL;
 223                 else if (!strcmp(argv[1], "--list") || !strcmp(argv[1], "-l")) {
 224                         if (argc != 2)
 225                                 usage(git_config_set_usage);
 226                         if (git_config(show_all_config) < 0 && file && errno)
 227                                 die("unable to read config file %s: %s", file,
 228                                     strerror(errno));
 229                         return 0;
 230                 }
 231                 else if (!strcmp(argv[1], "--global")) {
 232                         char *home = getenv("HOME");
 233                         if (home) {
 234                                 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
 235                                 setenv(CONFIG_ENVIRONMENT, user_config, 1);
 236                                 free(user_config);
 237                         } else {
 238                                 die("$HOME not set");
 239                         }
 240                 }
 241                 else if (!strcmp(argv[1], "--system"))
 242                         setenv(CONFIG_ENVIRONMENT, git_etc_gitconfig(), 1);
 243                 else if (!strcmp(argv[1], "--file") || !strcmp(argv[1], "-f")) {
 244                         if (argc < 3)
 245                                 usage(git_config_set_usage);
 246                         if (!is_absolute_path(argv[2]) && file)
 247                                 file = prefix_filename(file, strlen(file),
 248                                                        argv[2]);
 249                         else
 250                                 file = argv[2];
 251                         setenv(CONFIG_ENVIRONMENT, file, 1);
 252                         argc--;
 253                         argv++;
 254                 }
 255                 else if (!strcmp(argv[1], "--null") || !strcmp(argv[1], "-z")) {
 256                         term = '\0';
 257                         delim = '\n';
 258                         key_delim = '\n';
 259                 }
 260                 else if (!strcmp(argv[1], "--rename-section")) {
 261                         int ret;
 262                         if (argc != 4)
 263                                 usage(git_config_set_usage);
 264                         ret = git_config_rename_section(argv[2], argv[3]);
 265                         if (ret < 0)
 266                                 return ret;
 267                         if (ret == 0) {
 268                                 fprintf(stderr, "No such section!\n");
 269                                 return 1;
 270                         }
 271                         return 0;
 272                 }
 273                 else if (!strcmp(argv[1], "--remove-section")) {
 274                         int ret;
 275                         if (argc != 3)
 276                                 usage(git_config_set_usage);
 277                         ret = git_config_rename_section(argv[2], NULL);
 278                         if (ret < 0)
 279                                 return ret;
 280                         if (ret == 0) {
 281                                 fprintf(stderr, "No such section!\n");
 282                                 return 1;
 283                         }
 284                         return 0;
 285                 } else if (!strcmp(argv[1], "--get-color")) {
 286                         return get_color(argc-2, argv+2);
 287                 } else
 288                         break;
 289                 argc--;
 290                 argv++;
 291         }
 292
 293         switch (argc) {
 294         case 2:
 295                 return get_value(argv[1], NULL);
 296         case 3:
 297                 if (!strcmp(argv[1], "--unset"))
 298                         return git_config_set(argv[2], NULL);
 299                 else if (!strcmp(argv[1], "--unset-all"))
 300                         return git_config_set_multivar(argv[2], NULL, NULL, 1);
 301                 else if (!strcmp(argv[1], "--get"))
 302                         return get_value(argv[2], NULL);
 303                 else if (!strcmp(argv[1], "--get-all")) {
 304                         do_all = 1;
 305                         return get_value(argv[2], NULL);
 306                 } else if (!strcmp(argv[1], "--get-regexp")) {
 307                         show_keys = 1;
 308                         use_key_regexp = 1;
 309                         do_all = 1;
 310                         return get_value(argv[2], NULL);
 311                 } else {
 312                         value = normalize_value(argv[1], argv[2]);
 313                         return git_config_set(argv[1], value);
 314                 }
 315         case 4:
 316                 if (!strcmp(argv[1], "--unset"))
 317                         return git_config_set_multivar(argv[2], NULL, argv[3], 0);
 318                 else if (!strcmp(argv[1], "--unset-all"))
 319                         return git_config_set_multivar(argv[2], NULL, argv[3], 1);
 320                 else if (!strcmp(argv[1], "--get"))
 321                         return get_value(argv[2], argv[3]);
 322                 else if (!strcmp(argv[1], "--get-all")) {
 323                         do_all = 1;
 324                         return get_value(argv[2], argv[3]);
 325                 } else if (!strcmp(argv[1], "--get-regexp")) {
 326                         show_keys = 1;
 327                         use_key_regexp = 1;
 328                         do_all = 1;
 329                         return get_value(argv[2], argv[3]);
 330                 } else if (!strcmp(argv[1], "--add")) {
 331                         value = normalize_value(argv[2], argv[3]);
 332                         return git_config_set_multivar(argv[2], value, "^$", 0);
 333                 } else if (!strcmp(argv[1], "--replace-all")) {
 334                         value = normalize_value(argv[2], argv[3]);
 335                         return git_config_set_multivar(argv[2], value, NULL, 1);
 336                 } else {
 337                         value = normalize_value(argv[1], argv[2]);
 338                         return git_config_set_multivar(argv[1], value, argv[3], 0);
 339                 }
 340         case 5:
 341                 if (!strcmp(argv[1], "--replace-all")) {
 342                         value = normalize_value(argv[2], argv[3]);
 343                         return git_config_set_multivar(argv[2], value, argv[4], 1);
 344                 }
 345         case 1:
 346         default:
 347                 usage(git_config_set_usage);
 348         }
 349         return 0;
 350 }