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