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+/*
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+ ktigcc - TIGCC IDE for KDE
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+
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+ Copyright (C) 2006 Kevin Kofler
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by
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+ the Free Software Foundation; either version 2, or (at your option)
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+ 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
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+ GNU 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
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+ along with this program; if not, write to the Free Software Foundation,
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+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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+*/
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+
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+// This class is like QAssistantClient, but simpler (taylored to KTIGCC's use)
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+// and uses KProcess and KExtendedSocket instead of QProcess and QSocket. This
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+// is needed because, very annoyingly, QProcess doesn't work together with
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+// KProcess.
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+
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+#include "assistant.h"
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+#include <kprocio.h>
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+#include <kextsock.h>
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+#include <kmessagebox.h>
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+#include <qtextcodec.h>
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+#include <qwidget.h>
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+#include <qapplication.h>
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+#include <qeventloop.h>
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+#include <qtextstream.h>
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+#include <unistd.h>
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+
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+AssistantClient::AssistantClient(QObject *parent, const QString &profile)
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+ : QObject(parent), parentWidget(0), procIO(0), socket(0),
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+ assistantProfile(profile)
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+{
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+ if (parent->isWidgetType()) parentWidget=static_cast<QWidget *>(parent);
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+}
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+
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+AssistantClient::~AssistantClient()
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+{
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+ int socketStatus=socket?socket->socketStatus():0;
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+ if (socketStatus && socketStatus<KExtendedSocket::lookupInProgress) {
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+ KMessageBox::error(parentWidget,socket->strError(socketStatus,
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+ socket->systemError()),
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+ "Socket Error");
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+ }
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+ if (procIO) delete procIO;
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+ if (socket) delete socket;
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+}
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+
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+void AssistantClient::openAssistant(const QString &page)
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+{
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+ int socketStatus=socket?socket->socketStatus():0;
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+ if (socketStatus && socketStatus<KExtendedSocket::lookupInProgress) {
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+ KMessageBox::error(parentWidget,socket->strError(socketStatus,
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+ socket->systemError()),
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+ "Socket Error");
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+ delete procIO;
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+ procIO=static_cast<KProcIO *>(NULL);
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+ return;
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+ }
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+ if (socketStatus>=KExtendedSocket::closing) {
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+ // The old process is not closed yet, but the connection was already lost.
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+ // So kill the old process now and run a new one.
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+ delete procIO;
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+ procIO=static_cast<KProcIO *>(NULL);
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+ delete socket;
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+ socket=static_cast<KExtendedSocket *>(NULL);
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+ }
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+ if (!procIO) {
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+ start_new:
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+ // The QTextCodec has to be passed explicitly, or it will default to
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+ // ISO-8859-1 regardless of the locale, which is just broken.
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+ procIO=new KProcIO(QTextCodec::codecForLocale());
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+ // Use MergedStderr instead of Stderr so the messages get ordered
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+ // properly.
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+ procIO->setComm(static_cast<KProcess::Communication>(
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+ KProcess::Stdout|KProcess::MergedStderr));
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+ (*procIO)<<"assistant"<<"-server";
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+ if (!assistantProfile.isNull())
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+ (*procIO)<<"-profile"<<assistantProfile;
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+ if (!page.isNull())
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+ (*procIO)<<"-file"<<page;
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+ connect(procIO,SIGNAL(processExited(KProcess*)),
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+ this,SLOT(procIO_processExited()));
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+ connect(procIO,SIGNAL(readReady(KProcIO*)),this,SLOT(procIO_readReady()));
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+ if (!procIO->start()) {
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+ KMessageBox::error(parentWidget,"Could not run assistant.\n"
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+ "This feature requires Qt 3 Assistant.");
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+ delete procIO;
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+ procIO=static_cast<KProcIO *>(NULL);
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+ return;
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+ }
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+ } else if (!page.isNull()) {
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+ // Wait for Qt Assistant to actually open.
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+ while (procIO && !socket) {
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+ usleep(10000);
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+ QApplication::eventLoop()->processEvents(QEventLoop::ExcludeUserInput,10);
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+ }
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+ if (!procIO) goto start_new;
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+ QTextStream stream(static_cast<QIODevice *>(socket));
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+ stream<<page<<'\n';
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+ }
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+}
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+
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+void AssistantClient::procIO_processExited()
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+{
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+ disconnect(procIO,SIGNAL(processExited(KProcess*)),
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+ this,SLOT(procIO_processExited()));
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+ disconnect(procIO,SIGNAL(readReady(KProcIO*)),this,SLOT(procIO_readReady()));
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+ procIO->deleteLater();
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+ procIO=static_cast<KProcIO *>(NULL);
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+ int socketStatus=socket?socket->socketStatus():0;
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+ if (socketStatus && socketStatus<KExtendedSocket::lookupInProgress) {
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+ KMessageBox::error(parentWidget,socket->strError(socketStatus,
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+ socket->systemError()),
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+ "Socket Error");
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+ }
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+ if (socket) delete socket;
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+ socket=static_cast<KExtendedSocket *>(NULL);
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+}
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+
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+void AssistantClient::procIO_readReady()
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+{
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+ QString line;
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+ while (procIO->readln(line)>=0) {
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+ if (!socket) {
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+ bool ok;
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+ unsigned short port=line.toUShort(&ok);
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+ if (ok) {
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+ socket=new KExtendedSocket("localhost",port,KExtendedSocket::inetSocket);
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+ switch (socket->connect()) {
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+ case 0:
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+ break;
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+ case -1:
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+ KMessageBox::error(parentWidget,socket->strError(socket->socketStatus(),
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+ socket->systemError()),
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+ "Socket Error");
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+ goto error;
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+ case -2:
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+ KMessageBox::error(parentWidget,"Failed to connect to Qt Assistant.",
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+ "Socket Error");
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+ goto error;
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+ case -3:
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+ KMessageBox::error(parentWidget,"Connection to Qt Assistant timed out.",
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+ "Socket Error");
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+ goto error;
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+ default:
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+ KMessageBox::error(parentWidget,"Socket Error.");
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+ error:
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+ disconnect(procIO,SIGNAL(processExited(KProcess*)),
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+ this,SLOT(procIO_processExited()));
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+ disconnect(procIO,SIGNAL(readReady(KProcIO*)),
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+ this,SLOT(procIO_readReady()));
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+ procIO->deleteLater();
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+ procIO=static_cast<KProcIO *>(NULL);
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+ delete socket;
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+ socket=static_cast<KExtendedSocket *>(NULL);
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+ return;
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+ }
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+ continue;
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+ }
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+ }
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+ KMessageBox::error(parentWidget,line,"Qt Assistant Error");
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+ }
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+}
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