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#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;
}
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