71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
/* vim: set sw=4 sts=4 et foldmethod=syntax : */
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/*
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* Copyright (c) 2008, 2010, 2011, 2013 Ciaran McCreesh
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*
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* This file is part of the Paludis package manager. Paludis is free software;
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* you can redistribute it and/or modify it under the terms of the GNU General
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* Public License version 2, as published by the Free Software Foundation.
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*
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* Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PALUDIS_GUARD_PALUDIS_DISTRIBUTION_IMPL_HH
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#define PALUDIS_GUARD_PALUDIS_DISTRIBUTION_IMPL_HH 1
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#include <paludis/distribution.hh>
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#include <paludis/util/hashes.hh>
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#include <paludis/util/config_file.hh>
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#include <paludis/util/options.hh>
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#include <paludis/util/pimp-impl.hh>
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#include <unordered_map>
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#include <mutex>
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namespace paludis
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{
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template <typename Data_>
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struct Imp<ExtraDistributionData<Data_> >
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{
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mutable std::mutex mutex;
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mutable std::unordered_map<std::string, std::shared_ptr<const Data_>, Hash<std::string> > values;
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};
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template <typename Data_>
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ExtraDistributionData<Data_>::ExtraDistributionData() :
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_imp()
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{
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}
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template <typename Data_>
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ExtraDistributionData<Data_>::~ExtraDistributionData() = default;
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template <typename T_>
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struct ExtraDistributionDataData;
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template <typename Data_>
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const std::shared_ptr<const Data_>
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ExtraDistributionData<Data_>::data_from_distribution(const Distribution & d) const
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{
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std::unique_lock<std::mutex> lock(this->_imp->mutex);
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typename std::unordered_map<std::string, std::shared_ptr<const Data_>, Hash<std::string> >::const_iterator v(
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this->_imp->values.find(d.name()));
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if (this->_imp->values.end() != v)
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return v->second;
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std::shared_ptr<KeyValueConfigFile> k(std::make_shared<KeyValueConfigFile>(d.extra_data_dir() / ExtraDistributionDataData<Data_>::config_file_name(),
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KeyValueConfigFileOptions(), &KeyValueConfigFile::no_defaults, &KeyValueConfigFile::no_transformation));
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std::shared_ptr<const Data_> data(ExtraDistributionDataData<Data_>::make_data(k));
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this->_imp->values.insert(std::make_pair(d.name(), data));
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return data;
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}
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}
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#endif
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