PDF4QT/PdfTool/pdftooldiff.cpp

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2021-10-18 18:49:30 +02:00
// Copyright (C) 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 "pdftooldiff.h"
#include "pdfdiff.h"
#include "pdfdocumentreader.h"
namespace pdftool
{
static PDFToolDiff s_toolDiffApplication;
QString PDFToolDiff::getStandardString(PDFToolAbstractApplication::StandardString standardString) const
{
switch (standardString)
{
case Command:
return "diff";
case Name:
return PDFToolTranslationContext::tr("Compare documents");
case Description:
return PDFToolTranslationContext::tr("Compare contents of two documents.");
default:
Q_ASSERT(false);
break;
}
return QString();
}
int PDFToolDiff::execute(const PDFToolOptions& options)
{
if (options.diffFiles.size() != 2)
{
PDFConsole::writeError(PDFToolTranslationContext::tr("Exactly two documents must be specified."), options.outputCodec);
return ErrorInvalidArguments;
}
pdf::PDFDocumentReader reader(nullptr, [](bool* ok) { *ok = false; return QString(); }, options.permissiveReading, false);
pdf::PDFDocument leftDocument = reader.readFromFile(options.diffFiles.front());
if (reader.getReadingResult() != pdf::PDFDocumentReader::Result::OK)
{
PDFConsole::writeError(PDFToolTranslationContext::tr("Cannot open document '%1'.").arg(options.diffFiles.front()), options.outputCodec);
return ErrorDocumentReading;
}
pdf::PDFDocument rightDocument = reader.readFromFile(options.diffFiles.back());
if (reader.getReadingResult() != pdf::PDFDocumentReader::Result::OK)
{
PDFConsole::writeError(PDFToolTranslationContext::tr("Cannot open document '%1'.").arg(options.diffFiles.back()), options.outputCodec);
return ErrorDocumentReading;
}
pdf::PDFClosedIntervalSet leftPages;
leftPages.addInterval(0, leftDocument.getCatalog()->getPageCount() - 1);
pdf::PDFClosedIntervalSet rightPages;
rightPages.addInterval(0, rightDocument.getCatalog()->getPageCount() - 1);
pdf::PDFDiff diff(nullptr);
diff.setOption(pdf::PDFDiff::Asynchronous, false);
diff.setLeftDocument(&leftDocument);
diff.setRightDocument(&rightDocument);
diff.setPagesForLeftDocument(std::move(leftPages));
diff.setPagesForRightDocument(std::move(rightPages));
diff.start();
QLocale locale;
const pdf::PDFDiffResult& result = diff.getResult();
if (result.getResult())
{
PDFOutputFormatter formatter(options.outputStyle, options.outputCodec);
formatter.beginDocument("diff", PDFToolTranslationContext::tr("Difference Report").arg(options.document));
formatter.endl();
formatter.beginTable("differences", PDFToolTranslationContext::tr("Differences"));
formatter.beginTableHeaderRow("header");
formatter.writeTableHeaderColumn("no", PDFToolTranslationContext::tr("No."), Qt::AlignLeft);
formatter.writeTableHeaderColumn("type", PDFToolTranslationContext::tr("Type"), Qt::AlignLeft);
formatter.writeTableHeaderColumn("left-page-number", PDFToolTranslationContext::tr("Left Page"), Qt::AlignLeft);
formatter.writeTableHeaderColumn("right-page-number", PDFToolTranslationContext::tr("Right Page"), Qt::AlignLeft);
formatter.writeTableHeaderColumn("description", PDFToolTranslationContext::tr("Description"), Qt::AlignLeft);
formatter.endTableHeaderRow();
const size_t size = result.getDifferencesCount();
for (size_t i = 0; i < size; ++i)
{
pdf::PDFInteger leftPageIndex = result.getLeftPage(i);
pdf::PDFInteger rightPageIndex = result.getRightPage(i);
QString leftPageDescription = leftPageIndex != -1 ? locale.toString(leftPageIndex + 1) : QString();
QString rightPageDescription = rightPageIndex != -1 ? locale.toString(rightPageIndex + 1) : QString();
formatter.beginTableRow("difference", int(i));
formatter.writeTableColumn("no", locale.toString(i + 1), Qt::AlignRight);
formatter.writeTableColumn("type", result.getTypeDescription(i), Qt::AlignLeft);
formatter.writeTableColumn("left-page-number", leftPageDescription, Qt::AlignRight);
formatter.writeTableColumn("right-page-number", rightPageDescription, Qt::AlignRight);
formatter.writeTableColumn("description", result.getMessage(i), Qt::AlignLeft);
formatter.endTableRow();
}
formatter.endTable();
formatter.endDocument();
if (options.outputStyle == PDFOutputFormatter::Style::Xml)
{
QString xml;
result.saveToXML(&xml);
PDFConsole::writeText(xml, options.outputCodec);
}
else
{
PDFConsole::writeText(formatter.getString(), options.outputCodec);
}
}
else
{
PDFConsole::writeError(result.getResult().getErrorMessage(), options.outputCodec);
return ErrorUnknown;
}
return ExitSuccess;
}
PDFToolAbstractApplication::Options PDFToolDiff::getOptionsFlags() const
{
return ConsoleFormat | Diff;
}
} // namespace pdftool