93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/*
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* Copyright (C) 2003-2013 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 "config.h"
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#include "ClientSubscribe.hxx"
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#include "ClientInternal.hxx"
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#include "Idle.hxx"
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#include <assert.h>
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#include <string.h>
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enum client_subscribe_result
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client_subscribe(Client *client, const char *channel)
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{
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assert(client != NULL);
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assert(channel != NULL);
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if (!client_message_valid_channel_name(channel))
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return CLIENT_SUBSCRIBE_INVALID;
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if (client->num_subscriptions >= CLIENT_MAX_SUBSCRIPTIONS)
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return CLIENT_SUBSCRIBE_FULL;
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auto r = client->subscriptions.insert(channel);
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if (!r.second)
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return CLIENT_SUBSCRIBE_ALREADY;
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++client->num_subscriptions;
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idle_add(IDLE_SUBSCRIPTION);
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return CLIENT_SUBSCRIBE_OK;
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}
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bool
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client_unsubscribe(Client *client, const char *channel)
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{
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const auto i = client->subscriptions.find(channel);
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if (i == client->subscriptions.end())
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return false;
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assert(client->num_subscriptions > 0);
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client->subscriptions.erase(i);
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--client->num_subscriptions;
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idle_add(IDLE_SUBSCRIPTION);
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assert((client->num_subscriptions == 0) ==
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client->subscriptions.empty());
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return true;
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}
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void
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client_unsubscribe_all(Client *client)
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{
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client->subscriptions.clear();
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client->num_subscriptions = 0;
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}
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bool
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client_push_message(Client *client, const ClientMessage &msg)
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{
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assert(client != NULL);
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if (client->messages.size() >= CLIENT_MAX_MESSAGES ||
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!client->IsSubscribed(msg.GetChannel()))
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return false;
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if (client->messages.empty())
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client->IdleAdd(IDLE_MESSAGE);
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client->messages.push_back(msg);
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return true;
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}
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