153 lines
3.8 KiB
C++
153 lines
3.8 KiB
C++
/*
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Minetest
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Copyright (C) 2017 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
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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 Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "modchannels.h"
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#include <algorithm>
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#include <cassert>
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#include "util/basic_macros.h"
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bool ModChannel::registerConsumer(session_t peer_id)
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{
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// ignore if peer_id already joined
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if (CONTAINS(m_client_consumers, peer_id))
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return false;
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m_client_consumers.push_back(peer_id);
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return true;
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}
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bool ModChannel::removeConsumer(session_t peer_id)
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{
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bool found = false;
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auto peer_removal_fct = [peer_id, &found](u16 p) {
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if (p == peer_id)
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found = true;
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return p == peer_id;
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};
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m_client_consumers.erase(
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std::remove_if(m_client_consumers.begin(),
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m_client_consumers.end(), peer_removal_fct),
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m_client_consumers.end());
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return found;
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}
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bool ModChannel::canWrite() const
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{
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return m_state == MODCHANNEL_STATE_READ_WRITE;
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}
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void ModChannel::setState(ModChannelState state)
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{
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assert(state != MODCHANNEL_STATE_INIT);
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m_state = state;
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}
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bool ModChannelMgr::channelRegistered(const std::string &channel) const
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{
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return m_registered_channels.find(channel) != m_registered_channels.end();
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}
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ModChannel *ModChannelMgr::getModChannel(const std::string &channel)
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{
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if (!channelRegistered(channel))
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return nullptr;
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return m_registered_channels[channel].get();
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}
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bool ModChannelMgr::canWriteOnChannel(const std::string &channel) const
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{
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const auto channel_it = m_registered_channels.find(channel);
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if (channel_it == m_registered_channels.end()) {
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return false;
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}
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return channel_it->second->canWrite();
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}
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void ModChannelMgr::registerChannel(const std::string &channel)
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{
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m_registered_channels[channel] =
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std::unique_ptr<ModChannel>(new ModChannel(channel));
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}
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bool ModChannelMgr::setChannelState(const std::string &channel, ModChannelState state)
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{
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if (!channelRegistered(channel))
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return false;
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auto channel_it = m_registered_channels.find(channel);
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channel_it->second->setState(state);
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return true;
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}
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bool ModChannelMgr::removeChannel(const std::string &channel)
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{
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if (!channelRegistered(channel))
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return false;
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m_registered_channels.erase(channel);
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return true;
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}
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bool ModChannelMgr::joinChannel(const std::string &channel, session_t peer_id)
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{
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if (!channelRegistered(channel))
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registerChannel(channel);
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return m_registered_channels[channel]->registerConsumer(peer_id);
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}
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bool ModChannelMgr::leaveChannel(const std::string &channel, session_t peer_id)
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{
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if (!channelRegistered(channel))
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return false;
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// Remove consumer from channel
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bool consumerRemoved = m_registered_channels[channel]->removeConsumer(peer_id);
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// If channel is empty, remove it
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if (m_registered_channels[channel]->getChannelPeers().empty()) {
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removeChannel(channel);
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}
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return consumerRemoved;
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}
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void ModChannelMgr::leaveAllChannels(session_t peer_id)
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{
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for (auto &channel_it : m_registered_channels)
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channel_it.second->removeConsumer(peer_id);
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}
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static std::vector<u16> empty_channel_list;
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const std::vector<u16> &ModChannelMgr::getChannelPeers(const std::string &channel) const
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{
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const auto &channel_it = m_registered_channels.find(channel);
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if (channel_it == m_registered_channels.end())
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return empty_channel_list;
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return channel_it->second->getChannelPeers();
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}
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