projects / thirdparty / git.git / blame
| Commit | Line | Data |
|---|---|---|
| b4f207f3 ÆAB |
1 | #include "builtin.h" |
| 2 | #include "config.h" | |
| 3 | #include "parse-options.h" | |
| 4 | ||
| 5 | static char const * const env__helper_usage[] = { | |
| 6 | N_("git env--helper --type=[bool|ulong] <options> <env-var>"), | |
| 7 | NULL | |
| 8 | }; | |
| 9 | ||
| 08a8ac88 | 10 | static enum { |
| b4f207f3 ÆAB |
11 | ENV_HELPER_TYPE_BOOL = 1, |
| 12 | ENV_HELPER_TYPE_ULONG | |
| 13 | } cmdmode = 0; | |
| 14 | ||
| 15 | static int option_parse_type(const struct option *opt, const char *arg, | |
| 16 | int unset) | |
| 17 | { | |
| 18 | if (!strcmp(arg, "bool")) | |
| 19 | cmdmode = ENV_HELPER_TYPE_BOOL; | |
| 20 | else if (!strcmp(arg, "ulong")) | |
| 21 | cmdmode = ENV_HELPER_TYPE_ULONG; | |
| 22 | else | |
| 23 | die(_("unrecognized --type argument, %s"), arg); | |
| 24 | ||
| 25 | return 0; | |
| 26 | } | |
| 27 | ||
| 28 | int cmd_env__helper(int argc, const char **argv, const char *prefix) | |
| 29 | { | |
| 30 | int exit_code = 0; | |
| 31 | const char *env_variable = NULL; | |
| 32 | const char *env_default = NULL; | |
| 33 | int ret; | |
| 34 | int ret_int, default_int; | |
| 35 | unsigned long ret_ulong, default_ulong; | |
| 36 | struct option opts[] = { | |
| 37 | OPT_CALLBACK_F(0, "type", &cmdmode, N_("type"), | |
| 38 | N_("value is given this type"), PARSE_OPT_NONEG, | |
| 39 | option_parse_type), | |
| 40 | OPT_STRING(0, "default", &env_default, N_("value"), | |
| 41 | N_("default for git_env_*(...) to fall back on")), | |
| 42 | OPT_BOOL(0, "exit-code", &exit_code, | |
| 43 | N_("be quiet only use git_env_*() value as exit code")), | |
| 44 | OPT_END(), | |
| 45 | }; | |
| 46 | ||
| 47 | argc = parse_options(argc, argv, prefix, opts, env__helper_usage, | |
| 48 | PARSE_OPT_KEEP_UNKNOWN); | |
| 49 | if (env_default && !*env_default) | |
| 50 | usage_with_options(env__helper_usage, opts); | |
| 51 | if (!cmdmode) | |
| 52 | usage_with_options(env__helper_usage, opts); | |
| 53 | if (argc != 1) | |
| 54 | usage_with_options(env__helper_usage, opts); | |
| 55 | env_variable = argv[0]; | |
| 56 | ||
| 57 | switch (cmdmode) { | |
| 58 | case ENV_HELPER_TYPE_BOOL: | |
| 59 | if (env_default) { | |
| 60 | default_int = git_parse_maybe_bool(env_default); | |
| 61 | if (default_int == -1) { | |
| 62 | error(_("option `--default' expects a boolean value with `--type=bool`, not `%s`"), | |
| 63 | env_default); | |
| 64 | usage_with_options(env__helper_usage, opts); | |
| 65 | } | |
| 66 | } else { | |
| 67 | default_int = 0; | |
| 68 | } | |
| 69 | ret_int = git_env_bool(env_variable, default_int); | |
| 70 | if (!exit_code) | |
| 71 | puts(ret_int ? "true" : "false"); | |
| 72 | ret = ret_int; | |
| 73 | break; | |
| 74 | case ENV_HELPER_TYPE_ULONG: | |
| 75 | if (env_default) { | |
| 76 | if (!git_parse_ulong(env_default, &default_ulong)) { | |
| 77 | error(_("option `--default' expects an unsigned long value with `--type=ulong`, not `%s`"), | |
| 78 | env_default); | |
| 79 | usage_with_options(env__helper_usage, opts); | |
| 80 | } | |
| 81 | } else { | |
| 82 | default_ulong = 0; | |
| 83 | } | |
| 84 | ret_ulong = git_env_ulong(env_variable, default_ulong); | |
| 85 | if (!exit_code) | |
| 86 | printf("%lu\n", ret_ulong); | |
| 87 | ret = ret_ulong; | |
| 88 | break; | |
| 89 | default: | |
| 90 | BUG("unknown <type> value"); | |
| 91 | break; | |
| 92 | } | |
| 93 | ||
| 94 | return !ret; | |
| 95 | } |