server/player_network.cpp

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/* $Id: player_network.cpp 52533 2012-01-07 02:35:17Z shadowmaster $ */
/*
   Copyright (C) 2003 - 2012 by David White <dave@whitevine.net>
   Copyright (C) 2009 - 2012 by Tomasz Sniatowski <kailoran@gmail.com>
   Part of the Battle for Wesnoth Project http://www.wesnoth.org/

   This program 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 2 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY.

   See the COPYING file for more details.
*/

#include "player_network.hpp"
#include "../log.hpp"
#include "serialization/string_utils.hpp"

static lg::log_domain log_config("config");
#define WRN_CONFIG LOG_STREAM(warn, log_config)

namespace wesnothd {

namespace chat_message {

const size_t max_message_length = 256;

void truncate_message(const simple_wml::string_span& str, simple_wml::node& message)
{
    // testing for msg.size() is not sufficient but we're not getting false negatives
    // and it's cheaper than always converting to wstring.
    if(str.size() > static_cast<int>(chat_message::max_message_length)) {
        std::string tmp(str.begin(), str.end());
        // The string can contain utf-8 characters so truncate as wide_string otherwise
        // a corrupted utf-8 string can be returned.
        utils::truncate_as_wstring(tmp, max_message_length);
        message.set_attr_dup("message", tmp.c_str());
    }
}

} // end chat_message namespace

bool send_to_one(simple_wml::document& data, const network::connection sock, std::string packet_type)
{
    if (packet_type.empty())
        packet_type = data.root().first_child().to_string();
    try {
        simple_wml::string_span s = data.output_compressed();
        network::send_raw_data(s.begin(), s.size(), sock, packet_type);
    } catch (simple_wml::error& e) {
        WRN_CONFIG << __func__ << ": simple_wml error: " << e.message << std::endl;
        return false;
    }
    return true;
}

void send_to_many(simple_wml::document& data, const connection_vector& vec,
                  const network::connection exclude, std::string packet_type)
{
    if (packet_type.empty())
        packet_type = data.root().first_child().to_string();
    try {
        simple_wml::string_span s = data.output_compressed();
        for(connection_vector::const_iterator i = vec.begin(); i != vec.end(); ++i) {
            if (*i != exclude) {
                network::send_raw_data(s.begin(), s.size(), *i, packet_type);
            }
        }
    } catch (simple_wml::error& e) {
        WRN_CONFIG << __func__ << ": simple_wml error: " << e.message << std::endl;
    }
}

void send_to_many(simple_wml::document& data, const connection_vector& vec,
                  boost::function<bool (network::connection)> pred,
                  const network::connection exclude, std::string packet_type)
{
    if (packet_type.empty())
        packet_type = data.root().first_child().to_string();
    try {
        simple_wml::string_span s = data.output_compressed();
        for(connection_vector::const_iterator i = vec.begin(); i != vec.end(); ++i) {
            if ((*i != exclude) && pred(*i)) {
                network::send_raw_data(s.begin(), s.size(), *i, packet_type);
            }
        }
    } catch (simple_wml::error& e) {
        WRN_CONFIG << __func__ << ": simple_wml error: " << e.message << std::endl;
    }

}

} //end namespace wesnothd