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#include "last_getopt_parse_result.h"
namespace NLastGetopt {
const TOptParseResult* TOptsParseResult::FindParseResult(const TdVec& vec, const TOpt* opt) {
for (const auto& r : vec) {
if (r.OptPtr() == opt)
return &r;
}
return nullptr;
}
void TOptsParseResult::BuildTaggedFreeArgs(const TOpts* options) {
TaggedFreeArgs_.clear();
if (!Parser_) {
return;
}
const size_t freeArgsPos = GetFreeArgsPos();
for (size_t argPos = freeArgsPos; argPos < Parser_->Argc_; ++argPos) {
size_t index = argPos - freeArgsPos;
TString value = Parser_->Argv_[argPos];
ui32 tag = 0;
if (options) {
const TFreeArgSpec* spec = nullptr;
auto it = options->FreeArgSpecs_.find(index);
if (it != options->FreeArgSpecs_.end()) {
spec = &it->second;
} else if (options->FreeArgsMax_ == TOpts::UNLIMITED_ARGS) {
ui32 trailingArgsIndex = options->GetTrailingArgsIndex();
if (index >= trailingArgsIndex) {
spec = &options->TrailingArgSpec_;
}
}
if (spec) {
tag = spec->GetTag(value);
}
}
TaggedFreeArgs_.push_back(TTaggedArg {
.Value = value,
.Tag = tag
});
}
}
const TOptParseResult* TOptsParseResult::FindOptParseResult(const TOpt* opt, bool includeDefault) const {
const TOptParseResult* r = FindParseResult(Opts_, opt);
if (nullptr == r && includeDefault)
r = FindParseResult(OptsDef_, opt);
return r;
}
const TOptParseResult* TOptsParseResult::FindLongOptParseResult(const TString& name, bool includeDefault) const {
return FindOptParseResult(&Parser_->Opts_->GetLongOption(name), includeDefault);
}
const TOptParseResult* TOptsParseResult::FindCharOptParseResult(char c, bool includeDefault) const {
return FindOptParseResult(&Parser_->Opts_->GetCharOption(c), includeDefault);
}
bool TOptsParseResult::Has(const TOpt* opt, bool includeDefault) const {
Y_ASSERT(opt);
return FindOptParseResult(opt, includeDefault) != nullptr;
}
bool TOptsParseResult::Has(const TString& name, bool includeDefault) const {
return FindLongOptParseResult(name, includeDefault) != nullptr;
}
bool TOptsParseResult::Has(char c, bool includeDefault) const {
return FindCharOptParseResult(c, includeDefault) != nullptr;
}
const char* TOptsParseResult::Get(const TOpt* opt, bool includeDefault) const {
Y_ASSERT(opt);
const TOptParseResult* r = FindOptParseResult(opt, includeDefault);
if (!r || r->Empty()) {
try {
throw TUsageException() << "option " << opt->ToShortString() << " is unspecified";
} catch (...) {
HandleError();
// unreachable
throw;
}
} else {
return r->Back();
}
}
const char* TOptsParseResult::GetOrElse(const TOpt* opt, const char* defaultValue) const {
Y_ASSERT(opt);
const TOptParseResult* r = FindOptParseResult(opt);
if (!r || r->Empty()) {
return defaultValue;
} else {
return r->Back();
}
}
const char* TOptsParseResult::Get(const TString& name, bool includeDefault) const {
return Get(&Parser_->Opts_->GetLongOption(name), includeDefault);
}
const char* TOptsParseResult::Get(char c, bool includeDefault) const {
return Get(&Parser_->Opts_->GetCharOption(c), includeDefault);
}
const char* TOptsParseResult::GetOrElse(const TString& name, const char* defaultValue) const {
if (!Has(name))
return defaultValue;
return Get(name);
}
const char* TOptsParseResult::GetOrElse(char c, const char* defaultValue) const {
if (!Has(c))
return defaultValue;
return Get(c);
}
TOptParseResult& TOptsParseResult::OptParseResult() {
const TOpt* opt = Parser_->CurOpt();
Y_ASSERT(opt);
TdVec& opts = Parser_->IsExplicit() ? Opts_ : OptsDef_;
if (Parser_->IsExplicit()) // default options won't appear twice
for (auto& it : opts)
if (it.OptPtr() == opt)
return it;
opts.push_back(TOptParseResult(opt));
return opts.back();
}
TString TOptsParseResult::GetProgramName() const {
return Parser_->ProgramName_;
}
void TOptsParseResult::SetProgramSubcommandPath(const TVector<TString>& parts) {
ProgramSubcommandPath_ = parts;
}
const TVector<TString>& TOptsParseResult::GetProgramSubcommandPath() const {
return ProgramSubcommandPath_;
}
void TOptsParseResult::PrintUsage(IOutputStream& os) const {
Parser_->Opts_->PrintUsage(Parser_->ProgramName_, os);
}
size_t TOptsParseResult::GetFreeArgsPos() const {
return Parser_->Pos_;
}
TVector<TString> TOptsParseResult::GetFreeArgs() const {
TVector<TString> args;
args.reserve(TaggedFreeArgs_.size());
for (const auto& arg : TaggedFreeArgs_) {
args.push_back(arg.Value);
}
return args;
}
size_t TOptsParseResult::GetFreeArgCount() const {
return TaggedFreeArgs_.size();
}
void FindUserTypos(const TString& arg, const TOpts* options) {
if (arg.size() < 4 || !arg.StartsWith("-")) {
return;
}
for (auto opt: options->Opts_) {
for (auto name: opt->GetLongNames()) {
if ("-" + name == arg) {
throw TUsageException() << "did you mean `-" << arg << "` (with two dashes)?";
}
}
}
}
void TOptsParseResult::Init(const TOpts* options, int argc, const char** argv) {
try {
Parser_.Reset(new TOptsParser(options, argc, argv));
while (Parser_->Next()) {
TOptParseResult& r = OptParseResult();
r.AddValue(Parser_->CurValOrOpt().data());
}
Y_ENSURE(options);
BuildTaggedFreeArgs(options);
const auto freeArgs = GetFreeArgs();
for (size_t i = 0; i < freeArgs.size(); ++i) {
if (i >= options->ArgBindings_.size()) {
break;
}
options->ArgBindings_[i](freeArgs[i]);
}
if (options->CheckUserTypos_) {
for (auto arg: TVector<TString>(argv, std::next(argv, argc))) {
FindUserTypos(arg, options);
}
}
} catch (...) {
HandleError();
}
}
void TOptsParseResult::HandleError() const {
Cerr << CurrentExceptionMessage() << Endl;
if (Parser_.Get()) { // parser initializing can fail (and we get here, see Init)
if (Parser_->Opts_->FindLongOption("help") != nullptr) {
Cerr << "Try '" << Parser_->ProgramName_ << " --help' for more information." << Endl;
} else {
PrintUsage();
}
}
exit(1);
}
void TOptsParseResultException::HandleError() const {
throw;
}
}
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