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Diffstat (limited to 'kdeprint/management/kmdbcreator.cpp')
| -rw-r--r-- | kdeprint/management/kmdbcreator.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/kdeprint/management/kmdbcreator.cpp b/kdeprint/management/kmdbcreator.cpp new file mode 100644 index 000000000..021619db9 --- /dev/null +++ b/kdeprint/management/kmdbcreator.cpp @@ -0,0 +1,187 @@ +/* + * This file is part of the KDE libraries + * Copyright (c) 2001 Michael Goffioul <kdeprint@swing.be> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License version 2 as published by the Free Software Foundation. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + **/ + +#include "kmdbcreator.h" +#include "kmfactory.h" +#include "kmmanager.h" + +#include <qprogressdialog.h> +#include <qfileinfo.h> +#include <qdir.h> +#include <klocale.h> +#include <kapplication.h> +#include <kstandarddirs.h> +#include <kdebug.h> + +KMDBCreator::KMDBCreator(QObject *parent, const char *name) +: QObject(parent,name) +{ + m_dlg = 0; + m_status = true; + + connect(&m_proc,SIGNAL(receivedStdout(KProcess*,char*,int)),SLOT(slotReceivedStdout(KProcess*,char*,int))); + connect(&m_proc,SIGNAL(receivedStderr(KProcess*,char*,int)),SLOT(slotReceivedStderr(KProcess*,char*,int))); + connect(&m_proc,SIGNAL(processExited(KProcess*)),SLOT(slotProcessExited(KProcess*))); +} + +KMDBCreator::~KMDBCreator() +{ + if (m_proc.isRunning()) + m_proc.kill(); + // do not delete the progress dialog anymore: it's persistent and owned by + // it's parent. It will be destroyed along with its parent. +} + +bool KMDBCreator::checkDriverDB(const QString& dirname, const QDateTime& d) +{ + // don't block GUI + kapp->processEvents(); + + // first check current directory + QFileInfo dfi(dirname); + if (dfi.lastModified() > d) + return false; + + // then check most recent file in current directory + QDir dir(dirname); + const QFileInfoList *list = dir.entryInfoList(QDir::Files,QDir::Time); + if (list && list->count() > 0 && list->getFirst()->lastModified() > d) + return false; + + // then loop into subdirs + QStringList slist = dir.entryList(QDir::Dirs,QDir::Time); + for (QStringList::ConstIterator it=slist.begin(); it!=slist.end(); ++it) + if ((*it) != "." && (*it) != ".." && !checkDriverDB(dir.absFilePath(*it),d)) + return false; + + // everything is OK + return true; +} + +bool KMDBCreator::createDriverDB(const QString& dirname, const QString& filename, QWidget *parent) +{ + bool started(true); + + // initialize status + m_status = false; + m_firstflag = true; + + // start the child process + m_proc.clearArguments(); + QString exestr = KMFactory::self()->manager()->driverDbCreationProgram(); + m_proc << exestr << dirname << filename; + kdDebug() << "executing : " << exestr << " " << dirname << " " << filename << endl; + QString msg; + if (exestr.isEmpty()) + msg = i18n("No executable defined for the creation of the " + "driver database. This operation is not implemented."); + else if (KStandardDirs::findExe(exestr).isEmpty()) + msg = i18n("The executable %1 could not be found in your " + "PATH. Check that this program exists and is " + "accessible in your PATH variable.").arg(exestr); + else if (!m_proc.start(KProcess::NotifyOnExit, KProcess::AllOutput)) + msg = i18n("Unable to start the creation of the driver " + "database. The execution of %1 failed.").arg(exestr); + if (!msg.isEmpty()) + { + KMManager::self()->setErrorMsg(msg); + started = false; + } + + // Create the dialog if the process is running and if needed + if (started) + { + if (!m_dlg) + { + m_dlg = new QProgressDialog(parent->topLevelWidget(),"progress-dialog",true); + m_dlg->setLabelText(i18n("Please wait while KDE rebuilds a driver database.")); + m_dlg->setCaption(i18n("Driver Database")); + connect(m_dlg,SIGNAL(canceled()),SLOT(slotCancelled())); + } + m_dlg->setMinimumDuration(0); // always show the dialog + m_dlg->setProgress(0); // to force showing + } + else + // be sure to emit this signal otherwise the DB widget won't never be notified + emit dbCreated(); + + return started; +} + +void KMDBCreator::slotReceivedStdout(KProcess*, char *buf, int len) +{ + // save buffer + QString str( QCString(buf, len) ); + + // get the number, cut the string at the first '\n' otherwise + // the toInt() will return 0. If that occurs for the first number, + // then the number of steps will be also 0. + bool ok; + int p = str.find('\n'); + int n = str.mid(0, p).toInt(&ok); + + // process the number received + if (ok && m_dlg) + { + if (m_firstflag) + { + m_dlg->setTotalSteps(n); + m_firstflag = false; + } + else + { + m_dlg->setProgress(n); + } + } +} + +void KMDBCreator::slotReceivedStderr(KProcess*, char*, int) +{ + // just discard it for the moment +} + +void KMDBCreator::slotProcessExited(KProcess*) +{ + // delete the progress dialog + if (m_dlg) + { + m_dlg->reset(); + } + + // set exit status + m_status = (m_proc.normalExit() && m_proc.exitStatus() == 0); + if (!m_status) + { + KMFactory::self()->manager()->setErrorMsg(i18n("Error while creating driver database: abnormal child-process termination.")); + // remove the incomplete driver DB file so that, it will be + // reconstructed on next check + QFile::remove(m_proc.args()[2]); + } + //else + emit dbCreated(); +} + +void KMDBCreator::slotCancelled() +{ + if (m_proc.isRunning()) + m_proc.kill(); + else + emit dbCreated(); +} +#include "kmdbcreator.moc" |