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/* tqdbusunixfd.h DBUS unix file handle data type
*
* Copyright (C) 2013 Slávek Banko <slavek.banko@axis.cz>
*
* Licensed under the Academic Free License version 2.1
*
* 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; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*/
#ifndef TQDBUSUNIXFD_H
#define TQDBUSUNIXFD_H
#include "dbus/dbus.h"
#ifndef QT_H
#include "ntqshared.h"
#endif // QT_H
#ifndef DBUS_TYPE_UNIX_FD
#define DBUS_TYPE_UNIX_FD ((int) 'h')
#endif
#ifndef DBUS_TYPE_UNIX_FD_AS_STRING
#define DBUS_TYPE_UNIX_FD_AS_STRING "h"
#endif
/**
* @brief Class for representing D-Bus unix file handles
*
* This data type is necessary to correctly represent unix file handles in the
* context of D-Bus messages, since normal strings have a different D-Bus
* signature than unix file handles.
*
* @see @ref dbusconventions-unixfd
*/
class TQT_DBusUnixFd
{
public:
/**
* @brief Creates an empty and invalid unix file handle
*/
TQT_DBusUnixFd();
/**
* @brief Creates copy of the given @p other unix file handle
*
* @param other the unix file handle to copy
*/
TQT_DBusUnixFd(const TQT_DBusUnixFd& other);
/**
* @brief Creates copy of the given @p other unix file handle
*
* @param other the unix file handle to copy
*/
TQT_DBusUnixFd(int other);
/**
* @brief Destroys the unix file handle
*/
virtual ~TQT_DBusUnixFd();
/**
* @brief Returns whether the current content is considered a valid unix file handle
*
* @return \c true if the object's content describe a valid unix file handle,
* otherwise @c false
*
* @see @ref dbusconventions-unixfd
*/
bool isValid() const;
/**
* @brief Get unix file handle
*
* @see @ref dbusconventions-unixfd
*/
int fileDescriptor() const;
/**
* @brief Set new unix file handle
*
* @see @ref dbusconventions-unixfd
*/
void setFileDescriptor(int fileDescriptor);
/**
* @brief Give unix file handle
*
* @see @ref dbusconventions-unixfd
*/
void giveFileDescriptor(int fileDescriptor);
/**
* @brief Copy unix file handle from TQT_DBusUnixFd
*
* @see @ref dbusconventions-unixfd
*/
TQT_DBusUnixFd &operator=( const TQT_DBusUnixFd &other );
/**
* @brief Checks if the given @p other variant is equal to this one
*
* @param other unix file handle to compare with
*
* @return @c true if both use same file handle, otherwise
* @c false
*/
inline bool operator==(const TQT_DBusUnixFd& other) const
{
return (&other == this) || (other.d == d);
}
/**
* @brief Checks if the given @p other variant is not equal to this one
*
* @param other unix file handle to compare with
*
* @return @c true if both use different file handle, otherwise
* @c false
*/
inline bool operator!=(const TQT_DBusUnixFd& other) const
{
return (&other != this) && (other.d != d);
}
protected:
struct TQT_DBusUnixFdPrivate : public TQShared {
int fd;
} *d;
};
#endif
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