-/* This file is part of
- * ======================================================
- *
- * LyX, The Document Processor
+/**
+ * \file lyxserver.C
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
*
- * Copyright 1995 Matthias Ettrich
- * Copyright 1995-2001 The LyX Team.
+ * \author Lars Gullik Bjønnes
+ * \author Jean-Marc Lasgouttes
+ * \author Angus Leeming
+ * \author John Levon
*
- * ====================================================== */
+ * Full author contact details are available in file CREDITS.
+ */
/**
Docu : To use the lyxserver define the name of the pipe in your
#include <config.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <cerrno>
-#include FORMS_H_LOCATION
-
-#ifdef __GNUG__
-#pragma implementation
-#endif
-
#include "lyxserver.h"
-#include "lyx_main.h"
#include "debug.h"
+#include "funcrequest.h"
+#include "LyXAction.h"
#include "lyxfunc.h"
#include "support/lstrings.h"
#include "support/lyxlib.h"
+#include "frontends/lyx_gui.h"
+
+#include <boost/bind.hpp>
+
+#include <cerrno>
+#include <sys/stat.h>
+#include <fcntl.h>
#ifdef __EMX__
#include <cstdlib>
#include "support/os2_errortable.h"
#endif
+using lyx::support::compare;
+using lyx::support::rtrim;
+using lyx::support::split;
+using lyx::support::unlink;
+
using std::endl;
+using std::string;
+
// provide an empty mkfifo() if we do not have one. This disables the
// lyxserver.
#endif
-/* === variables ========================================================= */
-
-extern "C" {
-
- // C wrapper
- static
- void C_LyXComm_callback(int fd, void *v)
- {
- LyXComm::callback(fd, v);
- }
-
-}
-
-
-// LyXComm class
-
-// Open pipes
void LyXComm::openConnection()
{
lyxerr[Debug::LYXSERVER] << "LyXComm: Opening connection" << endl;
return;
if ((outfd = startPipe(outPipeName(), true)) == -1) {
- endPipe(infd, inPipeName());
+ endPipe(infd, inPipeName(), false);
return;
}
return;
}
- endPipe(infd, inPipeName());
- endPipe(outfd, outPipeName());
+ endPipe(infd, inPipeName(), false);
+ endPipe(outfd, outPipeName(), true);
ready = false;
}
+
int LyXComm::startPipe(string const & filename, bool write)
{
- int fd;
-
#ifdef __EMX__
HPIPE os2fd;
APIRET rc;
};
// Imported handles can be used both with OS/2 APIs and emx
// library functions.
- fd = _imphandle(os2fd);
+ int const fd = _imphandle(os2fd);
#else
if (::access(filename.c_str(), F_OK) == 0) {
lyxerr << "LyXComm: Pipe " << filename << " already exists.\n"
<< strerror(errno) << endl;
return -1;
};
- fd = ::open(filename.c_str(), write ? (O_RDWR) : (O_RDONLY|O_NONBLOCK));
+ int const fd = ::open(filename.c_str(),
+ write ? (O_RDWR) : (O_RDONLY|O_NONBLOCK));
#endif
if (fd < 0) {
lyxerr << "LyXComm: Could not open pipe " << filename << '\n'
<< strerror(errno) << endl;
- lyx::unlink(filename);
+ unlink(filename);
return -1;
}
- if (!write)
- fl_add_io_callback(fd, FL_READ, C_LyXComm_callback, this);
+ if (!write) {
+ lyx_gui::register_socket_callback(fd, boost::bind(&LyXComm::read_ready, this));
+ }
return fd;
}
-void LyXComm::endPipe(int & fd, string const & filename)
+void LyXComm::endPipe(int & fd, string const & filename, bool write)
{
if (fd < 0)
return;
+ if (!write) {
+ lyx_gui::unregister_socket_callback(fd);
+ }
+
#ifdef __EMX__
APIRET rc;
int errnum;
// OS/2 pipes are deleted automatically
#ifndef __EMX__
- if (lyx::unlink(filename) < 0) {
+ if (unlink(filename) < 0) {
lyxerr << "LyXComm: Could not remove pipe " << filename
<< '\n' << strerror(errno) << endl;
};
void LyXComm::emergencyCleanup()
{
if (!pipename.empty()) {
- endPipe(infd, inPipeName());
- endPipe(outfd, outPipeName());
+ endPipe(infd, inPipeName(), false);
+ endPipe(outfd, outPipeName(), true);
}
}
// Receives messages and sends then to client
-void LyXComm::callback(int fd, void *v)
+void LyXComm::read_ready()
{
- LyXComm * c = static_cast<LyXComm*>(v);
+ // nb! make read_buffer_ a class-member for multiple sessions
+ static string read_buffer_;
+ read_buffer_.erase();
- if (lyxerr.debugging(Debug::LYXSERVER)) {
- lyxerr << "LyXComm: Receiving from fd " << fd << endl;
- }
-
- const int CMDBUFLEN = 100;
- char charbuf[CMDBUFLEN];
- string cmd;
-// nb! make lsbuf a class-member for multiple sessions
- static string lsbuf;
+ int const charbuf_size = 100;
+ char charbuf[charbuf_size];
errno = 0;
int status;
// the single = is intended here.
- while ((status = read(fd, charbuf, CMDBUFLEN-1)))
- {// break and return in loop
- if (status > 0) // got something
- {
- charbuf[status]= '\0'; // turn it into a c string
- lsbuf += strip(charbuf, '\r');
+ while ((status = ::read(infd, charbuf, charbuf_size - 1))) {
+
+ if (status > 0) {
+ charbuf[status] = '\0'; // turn it into a c string
+ read_buffer_ += rtrim(charbuf, "\r");
// commit any commands read
- while (lsbuf.find('\n') != string::npos) // while still
- // commands
- // left
- {
+ while (read_buffer_.find('\n') != string::npos) {
// split() grabs the entire string if
// the delim /wasn't/ found. ?:-P
- lsbuf= split(lsbuf, cmd,'\n');
+ string cmd;
+ read_buffer_= split(read_buffer_, cmd,'\n');
lyxerr[Debug::LYXSERVER]
<< "LyXComm: status:" << status
- << ", lsbuf:" << lsbuf
+ << ", read_buffer_:" << read_buffer_
<< ", cmd:" << cmd << endl;
if (!cmd.empty())
- c->clientcb(c->client, cmd);
+ clientcb(client, cmd);
//\n or not \n?
}
}
- if (errno == EAGAIN)
- { // EAGAIN is not really an error , it means we're
- // only reading too fast for the writing process on
- // the other end of the pipe.
+ if (errno == EAGAIN) {
errno = 0;
- return; // up to libforms select-loop (*crunch*)
+ return;
}
- if (errno != 0)
- {
+ if (errno != 0) {
lyxerr << "LyXComm: " << strerror(errno) << endl;
- if (!lsbuf.empty())
- {
- lyxerr << "LyxComm: truncated command: "
- << lsbuf << endl;
- lsbuf.erase();
+ if (!read_buffer_.empty()) {
+ lyxerr << "LyXComm: truncated command: "
+ << read_buffer_ << endl;
+ read_buffer_.erase();
}
break; // reset connection
}
}
- c->closeConnection();
- c->openConnection();
- errno= 0;
+
+ // The connection gets reset in errno != EAGAIN
+ // Why does it need to be reset if errno == 0?
+ closeConnection();
+ openConnection();
+ errno = 0;
}
}
+string const LyXComm::inPipeName() const
+{
+ return pipename + string(".in");
+}
+
+
+string const LyXComm::outPipeName() const
+{
+ return pipename + string(".out");
+}
+
+
// LyXServer class
LyXServer::~LyXServer()
if (compare(p, "LYXSRV:", 7) == 0) {
server_only = true;
} else if (0 != compare(p, "LYXCMD:", 7)) {
- lyxerr << "LyXServer: Unknown request \"" << p << "\"" << endl;
+ lyxerr << "LyXServer: Unknown request \""
+ << p << '"' << endl;
return;
}
p += 7;
}
} else {
lyxerr <<"LyXServer: Undefined server command "
- << cmd << "." << endl;
+ << cmd << '.' << endl;
}
return;
}
// support currently. (Lgb)
- serv->func->verboseDispatch(cmd + ' ' + arg, false);
+ serv->func->dispatch(FuncRequest(lyxaction.lookupFunc(cmd), arg));
string const rval = serv->func->getMessage();
-
+
//modified june 1999 stefano@zool.su.se:
//all commands produce an INFO or ERROR message
//in the output pipe, even if they do not return
buf = "ERROR:";
else
buf = "INFO:";
- buf += client + ":" + cmd + ":" + rval + "\n";
+ buf += client + ':' + cmd + ':' + rval + '\n';
serv->pipes.send(buf);
// !!! we don't do any error checking -
/* ---F+------------------------------------------------------------------ *\
- Function : LyxNotifyClient
+ Function : LyXNotifyClient
Called by : WorkAreaKeyPress
Purpose : send a notify messge to a client
Parameters: s - string to send
projects / lyx.git / blobdiff