зеркало из https://github.com/microsoft/git.git
101 строка
2.6 KiB
C
101 строка
2.6 KiB
C
#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_OPT);
|
|
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;
|
|
}
|