157 lines
4.0 KiB
C++
157 lines
4.0 KiB
C++
//
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// VMime library (http://www.vmime.org)
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// Copyright (C) 2002-2005 Vincent Richard <vincent@vincent-richard.net>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of
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// the License, or (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 GNU
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// 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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// Linking this library statically or dynamically with other modules is making
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// a combined work based on this library. Thus, the terms and conditions of
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// the GNU General Public License cover the whole combination.
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//
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#ifndef VMIME_PLATFORMDEPENDANT_HPP_INCLUDED
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#define VMIME_PLATFORMDEPENDANT_HPP_INCLUDED
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#include "vmime/config.hpp"
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#include "vmime/dateTime.hpp"
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#include "vmime/exception.hpp"
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#include "vmime/charset.hpp"
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#if VMIME_HAVE_MESSAGING_FEATURES
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#include "vmime/net/socket.hpp"
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#include "vmime/net/timeoutHandler.hpp"
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#endif
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#if VMIME_HAVE_FILESYSTEM_FEATURES
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#include "vmime/utility/file.hpp"
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#include "vmime/utility/childProcess.hpp"
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#endif
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namespace vmime
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{
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/** Allow setting or getting the current platform handler.
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*/
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class platformDependant
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{
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public:
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/** Handles all platform-dependant operations. It offers an interface to
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* access platform-dependant objects: sockets, date/time, file system, etc.
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*/
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class handler
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{
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public:
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virtual ~handler();
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/** Return the current UNIX time (Epoch time): the number of
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* seconds elapsed since Jan, 1st 1970 00:00.
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*
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* @return UNIX Epoch time
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*/
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virtual const unsigned int getUnixTime() const = 0;
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/** Return the current date and time, in the local time zone.
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*
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* @return current date and time
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*/
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virtual const datetime getCurrentLocalTime() const = 0;
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/** Return the host name of the system.
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* Used when generating message ids.
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*
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* @return host name
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*/
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virtual const string getHostName() const = 0;
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/** Return the current process identifier.
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* Used when generating random strings (part boundaries or message ids).
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*
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* @return current process id
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*/
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virtual const unsigned int getProcessId() const = 0;
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/** Return the charset used on the system.
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*
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* @return locale charset
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*/
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virtual const charset getLocaleCharset() const = 0;
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/** This function is called when VMime library is waiting for
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* something (for example, it is called when there is no data
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* available in a socket). On POSIX-compliant systems, a
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* simple call to sched_yield() should suffice.
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*/
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virtual void wait() const = 0;
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#if VMIME_HAVE_MESSAGING_FEATURES
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/** Return a pointer to the default socket factory for
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* this platform.
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*
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* @return socket factory
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*/
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virtual ref <net::socketFactory> getSocketFactory() const = 0;
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#endif
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#if VMIME_HAVE_FILESYSTEM_FEATURES
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/** Return a pointer to a factory that creates file-system objects.
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*
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* @return file-system factory
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*/
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virtual utility::fileSystemFactory* getFileSystemFactory() const = 0;
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/** Return a pointer to a factory that creates child process objects,
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* which are used to spawn processes (run executable files).
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*
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* @return child process factory
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*/
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virtual utility::childProcessFactory* getChildProcessFactory() const = 0;
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#endif
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};
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template <class TYPE>
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static void setHandler()
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{
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delete (sm_handler);
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sm_handler = new TYPE;
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}
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static const handler* getHandler()
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{
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if (!sm_handler)
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throw exceptions::no_platform_dependant_handler();
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return (sm_handler);
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}
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private:
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static handler* sm_handler;
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};
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} // vmime
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#endif // VMIME_PLATFORMDEPENDANT_HPP_INCLUDED
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