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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@27425 a592a061-630c-0410-9148-cb99ea01b6c8
139 lines
3.1 KiB
C++
139 lines
3.1 KiB
C++
// -*- C++ -*-
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/**
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* \file Server.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Lars Gullik Bjønnes
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* \author Jean-Marc Lasgouttes
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef SERVER_H
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#define SERVER_H
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#include <boost/signals/trackable.hpp>
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namespace lyx {
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class LyXFunc;
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class Server;
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/** This class managed the pipes used for communicating with clients.
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Usage: Initialize with pipe-filename-base, client class to receive
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messages, and callback-function that will be called with the messages.
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When you want to send, use "send()".
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This class encapsulates all the dirty communication and thus provides
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a clean string interface.
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*/
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class LyXComm : public boost::signals::trackable {
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public:
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/** When we receive a message, we send it to a client.
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This is one of the small things that would have been a lot
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cleaner with a Signal/Slot thing.
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*/
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typedef void (*ClientCallbackfct)(Server *, std::string const &);
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/// Construct with pipe-basename and callback to receive messages
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LyXComm(std::string const & pip, Server * cli, ClientCallbackfct ccb = 0);
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///
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~LyXComm() { closeConnection(); }
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/// clean up in emergency
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void emergencyCleanup();
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/// Send message
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void send(std::string const &);
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/// asynch ready-to-be-read notification
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void read_ready();
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private:
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/// the filename of the in pipe
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std::string const inPipeName() const;
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/// the filename of the out pipe
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std::string const outPipeName() const;
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/// Open pipes
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void openConnection();
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/// Close pipes
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void closeConnection();
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/// start a pipe
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int startPipe(std::string const &, bool);
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/// finish a pipe
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void endPipe(int &, std::string const &, bool);
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/// This is -1 if not open
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int infd_;
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/// This is -1 if not open
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int outfd_;
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/// Are we up and running?
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bool ready_;
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/// Base of pipename including path
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std::string pipename_;
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/// The client
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Server * client_;
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/// The client callback function
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ClientCallbackfct clientcb_;
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};
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///
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class Server {
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public:
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// FIXME IN 0.13
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// Hack! This should be changed in 0.13
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// The lyx server should not take an argument "LyXFunc" but this is
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// how it will be done for 0.12. In 0.13 we must write a non-gui
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// bufferview.
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// IMO lyxserver is atypical, and for the moment the only one, non-gui
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// bufferview. We just have to find a way to handle situations like if
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// lyxserver is using a buffer that is being edited with a bufferview.
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// With a common buffer list this is not a problem, maybe. (Alejandro)
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///
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Server(LyXFunc * f, std::string const & pip);
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///
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~Server();
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///
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void notifyClient(std::string const &);
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/// whilst crashing etc.
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void emergencyCleanup() { pipes_.emergencyCleanup(); }
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///
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void callback(std::string const & msg);
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private:
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/// Names and number of current clients
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enum { MAX_CLIENTS = 10 };
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///
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std::string clients_[MAX_CLIENTS];
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///
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int numclients_;
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///
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LyXFunc * func_;
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///
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LyXComm pipes_;
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};
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/// Implementation is in LyX.cpp
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extern Server & theServer();
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} // namespace lyx
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#endif // SERVER_H
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