PDF4QT/PdfTool/pdftooloptimize.cpp

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2021-09-27 11:14:20 +02:00
// Copyright (C) 2020-2021 Jakub Melka
//
// This file is part of PDF4QT.
//
// PDF4QT is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// with the written consent of the copyright owner, any later version.
//
// PDF4QT 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
#include "pdftooloptimize.h"
#include "pdfdocumentwriter.h"
namespace pdftool
{
static PDFToolOptimize s_optimizeApplication;
QString PDFToolOptimize::getStandardString(PDFToolAbstractApplication::StandardString standardString) const
{
switch (standardString)
{
case Command:
return "optimize";
case Name:
return PDFToolTranslationContext::tr("Optimize");
case Description:
return PDFToolTranslationContext::tr("Optimize document size using various algorithms.");
default:
Q_ASSERT(false);
break;
}
return QString();
}
int PDFToolOptimize::execute(const PDFToolOptions& options)
{
if (!options.optimizeFlags)
{
PDFConsole::writeError(PDFToolTranslationContext::tr("No optimization option has been set."), options.outputCodec);
return ErrorInvalidArguments;
}
pdf::PDFDocument document;
QByteArray sourceData;
if (!readDocument(options, document, &sourceData, false))
{
return ErrorDocumentReading;
}
pdf::PDFOptimizer optimizer(options.optimizeFlags, nullptr);
QObject::connect(&optimizer, &pdf::PDFOptimizer::optimizationProgress, &optimizer, [&options](QString text) { PDFConsole::writeError(text, options.outputCodec); }, Qt::DirectConnection);
optimizer.setDocument(&document);
optimizer.optimize();
document = optimizer.takeOptimizedDocument();
pdf::PDFDocumentWriter writer(nullptr);
pdf::PDFOperationResult result = writer.write(options.document, &document, true);
if (!result)
{
PDFConsole::writeError(PDFToolTranslationContext::tr("Failed to write optimize document. %1").arg(result.getErrorMessage()), options.outputCodec);
return ErrorFailedWriteToFile;
}
return ExitSuccess;
}
PDFToolAbstractApplication::Options PDFToolOptimize::getOptionsFlags() const
{
return ConsoleFormat | OpenDocument | Optimize;
}
} // namespace pdftool