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dindexer/include/dindexer-machinery/set_listing_helpers.hpp

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C++

/* Copyright 2015, 2016, Michele Santullo
* This file is part of "dindexer".
*
* "dindexer" is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* "dindexer" is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with "dindexer". If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef id036D985665EC437096DF7EBC5607DB0A
#define id036D985665EC437096DF7EBC5607DB0A
#include "set_listing.hpp"
#include <cstddef>
#include <algorithm>
#include <type_traits>
namespace mchlib {
template <bool Const>
std::size_t count_listing_dirs ( const SetListingView<Const>& parList );
template <bool Const>
std::size_t count_listing_files ( const SetListingView<Const>& parList );
template <bool Const>
std::size_t count_listing_items ( const SetListingView<Const>& parList );
template <bool Const>
std::size_t count_listing_items_recursive ( const SetListingView<Const>& parList );
template <bool Const>
std::vector<typename std::conditional<Const, const FileRecordData*, FileRecordData*>::type>
flattened_listing ( const mchlib::SetListingView<Const>& parContent );
namespace implem {
template <bool Const>
void flattened_listing (const mchlib::SetListingView<Const>& parContent, std::vector<typename std::conditional<Const, const FileRecordData*, FileRecordData*>::type>& parOut) {
const auto end = parContent.end();
for (auto itcurr = parContent.cbegin(); itcurr != end; ++itcurr) {
parOut.push_back(&*itcurr);
if (itcurr->is_directory) {
flattened_listing(mchlib::SetListingView<Const>(itcurr), parOut);
}
}
}
} //namespace implem
template <bool Const>
inline
std::size_t count_listing_dirs (const SetListingView<Const>& parList) {
return std::count_if(
parList.cbegin(),
parList.cend(),
[] (const FileRecordData& parItm) {
return parItm.is_directory;
}
);
}
template <bool Const>
inline
std::size_t count_listing_files (const SetListingView<Const>& parList) {
return std::count_if(
parList.cbegin(),
parList.cend(),
[] (const FileRecordData& parItm) {
return not parItm.is_directory;
}
);
}
template <bool Const>
inline
std::size_t count_listing_items (const SetListingView<Const>& parList) {
return std::count_if(
parList.cbegin(),
parList.cend(),
[] (const FileRecordData&) {
return true;
}
);
}
template <bool Const>
inline
std::size_t count_listing_items_recursive (const SetListingView<Const>& parList) {
std::size_t retval = 0;
for (auto it = parList.begin(), itEND = parList.end(); it != itEND; ++it, ++retval) {
if (it->is_directory)
retval += count_listing_items_recursive(SetListingView<Const>(it));
}
return retval;
}
template <bool Const>
inline
std::vector<typename std::conditional<Const, const FileRecordData*, FileRecordData*>::type>
flattened_listing (const mchlib::SetListingView<Const>& parContent) {
std::vector<typename std::conditional<Const, const FileRecordData*, FileRecordData*>::type> retval;
implem::flattened_listing(parContent, retval);
return std::move(retval);
}
} //namespace mchlib
#endif