mirror of https://github.com/kiwix/libkiwix.git
109 lines
3.6 KiB
C++
109 lines
3.6 KiB
C++
/*
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* Copyright 2019 Matthieu Gautier <mgautier@kymeria.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "name_mapper.h"
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#include "library.h"
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#include "tools/regexTools.h"
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#include <iostream>
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namespace kiwix {
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HumanReadableNameMapper::HumanReadableNameMapper(kiwix::Library& library, bool withAlias) {
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for (auto& bookId: library.filter(kiwix::Filter().local(true).valid(true))) {
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auto& currentBook = library.getBookById(bookId);
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auto bookName = currentBook.getHumanReadableIdFromPath();
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m_idToName[bookId] = bookName;
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mapName(library, bookName, bookId);
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if (!withAlias)
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continue;
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auto aliasName = replaceRegex(bookName, "", "_[[:digit:]]{4}-[[:digit:]]{2}$");
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if (aliasName != bookName) {
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mapName(library, aliasName, bookId);
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}
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}
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}
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void HumanReadableNameMapper::mapName(const Library& library, std::string name, std::string bookId) {
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if (m_nameToId.find(name) == m_nameToId.end()) {
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m_nameToId[name] = bookId;
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} else {
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const auto& currentBook = library.getBookById(bookId);
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auto alreadyPresentPath = library.getBookById(m_nameToId[name]).getPath();
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std::cerr << "Path collision: '" << alreadyPresentPath
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<< "' and '" << currentBook.getPath()
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<< "' can't share the same URL path '" << name << "'."
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<< " Therefore, only '" << alreadyPresentPath
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<< "' will be served." << std::endl;
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}
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}
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std::string HumanReadableNameMapper::getNameForId(const std::string& id) const {
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return m_idToName.at(id);
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}
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std::string HumanReadableNameMapper::getIdForName(const std::string& name) const {
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return m_nameToId.at(name);
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}
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////////////////////////////////////////////////////////////////////////////////
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// UpdatableNameMapper
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////////////////////////////////////////////////////////////////////////////////
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UpdatableNameMapper::UpdatableNameMapper(LibraryPtr lib, bool withAlias)
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: library(lib)
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, withAlias(withAlias)
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{
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update();
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}
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void UpdatableNameMapper::update()
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{
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const auto newNameMapper = new HumanReadableNameMapper(*library, withAlias);
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std::lock_guard<std::mutex> lock(mutex);
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nameMapper.reset(newNameMapper);
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}
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UpdatableNameMapper::NameMapperHandle
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UpdatableNameMapper::currentNameMapper() const
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{
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// Return a copy of the handle to the current NameMapper object. It will
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// ensure that the object survives any call to UpdatableNameMapper::update()
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// made before the completion of any pending operation on that object.
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std::lock_guard<std::mutex> lock(mutex);
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return nameMapper;
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}
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std::string UpdatableNameMapper::getNameForId(const std::string& id) const
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{
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// Ensure that the current nameMapper object survives a concurrent call
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// to UpdatableNameMapper::update()
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return currentNameMapper()->getNameForId(id);
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}
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std::string UpdatableNameMapper::getIdForName(const std::string& name) const
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{
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// Ensure that the current nameMapper object survives a concurrent call
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// to UpdatableNameMapper::update()
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return currentNameMapper()->getIdForName(name);
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}
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}
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