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//
// OptionProcessor.cpp
//
// Library: Util
// Package: Options
// Module: OptionProcessor
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Util/OptionProcessor.h"
#include "Poco/Util/OptionSet.h"
#include "Poco/Util/Option.h"
#include "Poco/Util/OptionException.h"
namespace Poco {
namespace Util {
OptionProcessor::OptionProcessor(const OptionSet& options):
_options(options),
_unixStyle(true),
_ignore(false)
{
}
OptionProcessor::~OptionProcessor()
{
}
void OptionProcessor::setUnixStyle(bool flag)
{
_unixStyle = flag;
}
bool OptionProcessor::process(const std::string& argument, std::string& optionName, std::string& optionArg)
{
optionName.clear();
optionArg.clear();
if (!_ignore)
{
if (!_deferredOption.empty())
return processCommon(argument, false, optionName, optionArg);
else if (_unixStyle)
return processUnix(argument, optionName, optionArg);
else
return processDefault(argument, optionName, optionArg);
}
return false;
}
void OptionProcessor::checkRequired() const
{
for (OptionSet::Iterator it = _options.begin(); it != _options.end(); ++it)
{
if (it->required() && _specifiedOptions.find(it->fullName()) == _specifiedOptions.end())
throw MissingOptionException(it->fullName());
}
if (!_deferredOption.empty())
{
std::string optionArg;
const Option& option = _options.getOption(_deferredOption, false);
option.process(_deferredOption, optionArg); // will throw MissingArgumentException
}
}
bool OptionProcessor::processUnix(const std::string& argument, std::string& optionName, std::string& optionArg)
{
std::string::const_iterator it = argument.begin();
std::string::const_iterator end = argument.end();
if (it != end)
{
if (*it == '-')
{
++it;
if (it != end)
{
if (*it == '-')
{
++it;
if (it == end)
{
_ignore = true;
return true;
}
else return processCommon(std::string(it, end), false, optionName, optionArg);
}
else return processCommon(std::string(it, end), true, optionName, optionArg);
}
}
}
return false;
}
bool OptionProcessor::processDefault(const std::string& argument, std::string& optionName, std::string& optionArg)
{
std::string::const_iterator it = argument.begin();
std::string::const_iterator end = argument.end();
if (it != end)
{
if (*it == '/')
{
++it;
return processCommon(std::string(it, end), false, optionName, optionArg);
}
}
return false;
}
bool OptionProcessor::processCommon(const std::string& optionStr, bool isShort, std::string& optionName, std::string& optionArg)
{
if (!_deferredOption.empty())
{
const Option& option = _options.getOption(_deferredOption, false);
std::string optionWithArg(_deferredOption);
_deferredOption.clear();
optionWithArg += '=';
optionWithArg += optionStr;
option.process(optionWithArg, optionArg);
optionName = option.fullName();
return true;
}
if (optionStr.empty()) throw EmptyOptionException();
const Option& option = _options.getOption(optionStr, isShort);
const std::string& group = option.group();
if (!group.empty())
{
if (_groups.find(group) != _groups.end())
throw IncompatibleOptionsException(option.fullName());
else
_groups.insert(group);
}
if (_specifiedOptions.find(option.fullName()) != _specifiedOptions.end() && !option.repeatable())
throw DuplicateOptionException(option.fullName());
_specifiedOptions.insert(option.fullName());
if (option.argumentRequired() && ((!isShort && optionStr.find_first_of(":=") == std::string::npos) || (isShort && optionStr.length() == option.shortName().length())))
{
_deferredOption = option.fullName();
return true;
}
option.process(optionStr, optionArg);
optionName = option.fullName();
return true;
}
} } // namespace Poco::Util
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