| #include "builtin.h" |
| #include "config.h" |
| #include "parse-options.h" |
| |
| static char const * const env__helper_usage[] = { |
| N_("git env--helper --type=[bool|ulong] <options> <env-var>"), |
| NULL |
| }; |
| |
| enum cmdmode { |
| ENV_HELPER_TYPE_BOOL = 1, |
| ENV_HELPER_TYPE_ULONG |
| }; |
| |
| static int option_parse_type(const struct option *opt, const char *arg, |
| int unset) |
| { |
| enum cmdmode *cmdmode = opt->value; |
| |
| BUG_ON_OPT_NEG(unset); |
| |
| if (!strcmp(arg, "bool")) |
| *cmdmode = ENV_HELPER_TYPE_BOOL; |
| else if (!strcmp(arg, "ulong")) |
| *cmdmode = ENV_HELPER_TYPE_ULONG; |
| else |
| die(_("unrecognized --type argument, %s"), arg); |
| |
| return 0; |
| } |
| |
| int cmd_env__helper(int argc, const char **argv, const char *prefix) |
| { |
| int exit_code = 0; |
| const char *env_variable = NULL; |
| const char *env_default = NULL; |
| int ret; |
| int ret_int, default_int; |
| unsigned long ret_ulong, default_ulong; |
| enum cmdmode cmdmode = 0; |
| struct option opts[] = { |
| OPT_CALLBACK_F(0, "type", &cmdmode, N_("type"), |
| N_("value is given this type"), PARSE_OPT_NONEG, |
| option_parse_type), |
| OPT_STRING(0, "default", &env_default, N_("value"), |
| N_("default for git_env_*(...) to fall back on")), |
| OPT_BOOL(0, "exit-code", &exit_code, |
| N_("be quiet only use git_env_*() value as exit code")), |
| OPT_END(), |
| }; |
| |
| argc = parse_options(argc, argv, prefix, opts, env__helper_usage, |
| PARSE_OPT_KEEP_UNKNOWN); |
| if (env_default && !*env_default) |
| usage_with_options(env__helper_usage, opts); |
| if (!cmdmode) |
| usage_with_options(env__helper_usage, opts); |
| if (argc != 1) |
| usage_with_options(env__helper_usage, opts); |
| env_variable = argv[0]; |
| |
| switch (cmdmode) { |
| case ENV_HELPER_TYPE_BOOL: |
| if (env_default) { |
| default_int = git_parse_maybe_bool(env_default); |
| if (default_int == -1) { |
| error(_("option `--default' expects a boolean value with `--type=bool`, not `%s`"), |
| env_default); |
| usage_with_options(env__helper_usage, opts); |
| } |
| } else { |
| default_int = 0; |
| } |
| ret_int = git_env_bool(env_variable, default_int); |
| if (!exit_code) |
| puts(ret_int ? "true" : "false"); |
| ret = ret_int; |
| break; |
| case ENV_HELPER_TYPE_ULONG: |
| if (env_default) { |
| if (!git_parse_ulong(env_default, &default_ulong)) { |
| error(_("option `--default' expects an unsigned long value with `--type=ulong`, not `%s`"), |
| env_default); |
| usage_with_options(env__helper_usage, opts); |
| } |
| } else { |
| default_ulong = 0; |
| } |
| ret_ulong = git_env_ulong(env_variable, default_ulong); |
| if (!exit_code) |
| printf("%lu\n", ret_ulong); |
| ret = ret_ulong; |
| break; |
| default: |
| BUG("unknown <type> value"); |
| break; |
| } |
| |
| return !ret; |
| } |