88 lines
2.0 KiB
C++
88 lines
2.0 KiB
C++
/*
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* Copyright 2003-2018 The Music Player Daemon Project
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* http://www.musicpd.org
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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 2 of the License, or
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* (at your option) 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 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 "Client.hxx"
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#include "Partition.hxx"
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#include "Idle.hxx"
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#include <assert.h>
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Client::SubscribeResult
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Client::Subscribe(const char *channel) noexcept
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{
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assert(channel != nullptr);
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if (!client_message_valid_channel_name(channel))
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return Client::SubscribeResult::INVALID;
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if (num_subscriptions >= MAX_SUBSCRIPTIONS)
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return Client::SubscribeResult::FULL;
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auto r = subscriptions.insert(channel);
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if (!r.second)
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return Client::SubscribeResult::ALREADY;
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++num_subscriptions;
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partition->EmitIdle(IDLE_SUBSCRIPTION);
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return Client::SubscribeResult::OK;
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}
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bool
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Client::Unsubscribe(const char *channel) noexcept
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{
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const auto i = subscriptions.find(channel);
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if (i == subscriptions.end())
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return false;
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assert(num_subscriptions > 0);
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subscriptions.erase(i);
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--num_subscriptions;
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partition->EmitIdle(IDLE_SUBSCRIPTION);
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assert((num_subscriptions == 0) ==
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subscriptions.empty());
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return true;
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}
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void
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Client::UnsubscribeAll() noexcept
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{
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subscriptions.clear();
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num_subscriptions = 0;
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}
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bool
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Client::PushMessage(const ClientMessage &msg) noexcept
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{
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if (messages.size() >= MAX_MESSAGES ||
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!IsSubscribed(msg.GetChannel()))
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return false;
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if (messages.empty())
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IdleAdd(IDLE_MESSAGE);
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messages.push_back(msg);
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return true;
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}
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