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#include "posix_getopt.h"
#include <util/generic/ptr.h>
#include <ctype.h>
namespace NLastGetopt {
char* optarg;
int optind;
int optopt;
int opterr;
int optreset;
static THolder<TOpts> Opts;
static THolder<TOptsParser> OptsParser;
int getopt_long_impl(int argc, char* const* argv, const char* optstring,
const struct option* longopts, int* longindex, bool long_only) {
if (!Opts || optreset == 1) {
optarg = nullptr;
optind = 1;
opterr = 1;
optreset = 0;
Opts.Reset(new TOpts(TOpts::Default(optstring)));
Opts->AllowSingleDashForLong_ = long_only;
for (const struct option* o = longopts; o != nullptr && o->name != nullptr; ++o) {
TOpt* opt;
if ((unsigned)o->val < 0x80 && isalnum(o->val)) {
opt = &Opts->CharOption(char(o->val));
opt->AddLongName(o->name);
} else {
Opts->AddLongOption(o->name);
opt = const_cast<TOpt*>(&Opts->GetLongOption(o->name));
}
opt->HasArg_ = EHasArg(o->has_arg);
opt->UserValue(o->flag);
}
OptsParser.Reset(new TOptsParser(&*Opts, argc, (const char**)argv));
}
optarg = nullptr;
try {
if (!OptsParser->Next()) {
return -1;
} else {
optarg = (char*)OptsParser->CurVal();
optind = (int)OptsParser->Pos_;
if (longindex && OptsParser->CurOpt())
*longindex = (int)Opts->IndexOf(OptsParser->CurOpt());
return OptsParser->CurOpt() ? OptsParser->CurOpt()->GetCharOr0() : 1;
}
} catch (const NLastGetopt::TException&) {
return '?';
}
}
int getopt_long(int argc, char* const* argv, const char* optstring,
const struct option* longopts, int* longindex) {
return getopt_long_impl(argc, argv, optstring, longopts, longindex, false);
}
int getopt_long_only(int argc, char* const* argv, const char* optstring,
const struct option* longopts, int* longindex) {
return getopt_long_impl(argc, argv, optstring, longopts, longindex, true);
}
// XXX: leading colon is not supported
// XXX: updating optind by client is not supported
int getopt(int argc, char* const* argv, const char* optstring) {
return getopt_long(argc, argv, optstring, nullptr, nullptr);
}
}
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