Extract metadata tool

PdfTool/PdfTool.pro

@@ -45,6 +45,7 @@ SOURCES += \
         pdftoolattachments.cpp \
         pdftoolinfo.cpp \
         pdftoolinfojavascript.cpp \
+        pdftoolinfometadata.cpp \
         pdftoolinfonameddestinations.cpp \
         pdftoolinfopageboxes.cpp \
         pdftoolverifysignatures.cpp \
@@ -65,6 +66,7 @@ HEADERS += \
     pdftoolattachments.h \
     pdftoolinfo.h \
     pdftoolinfojavascript.h \
+    pdftoolinfometadata.h \
     pdftoolinfonameddestinations.h \
     pdftoolinfopageboxes.h \
     pdftoolverifysignatures.h \

PdfTool/pdfoutputformatter.cpp

@@ -21,6 +21,7 @@
 #include <QTextStream>
 #include <QXmlStreamWriter>
 #include <QCoreApplication>
+#include <QDataStream>
 
 #include <stack>
 
@@ -668,4 +669,13 @@ void PDFConsole::writeError(QString text, QString codecName)
 #endif
 }
 
+void PDFConsole::writeData(const QByteArray& data)
+{
+    if (!data.isEmpty())
+    {
+        QTextStream stream(stdout);
+        stream.device()->write(data);
+    }
+}
+
 }   // pdftool

PdfTool/pdfoutputformatter.h

@@ -102,6 +102,9 @@ public:
     /// Writes error to the console
     static void writeError(QString text, QString codecName);
 
+    /// Writes binary data to the console
+    static void writeData(const QByteArray& data);
+
 private:
     explicit PDFConsole() = delete;
 };

PdfTool/pdftoolinfometadata.cpp

@@ -0,0 +1,82 @@
+//    Copyright (C) 2020 Jakub Melka
+//
+//    This file is part of PdfForQt.
+//
+//    PdfForQt 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
+//    (at your option) any later version.
+//
+//    PdfForQt 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 PDFForQt.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "pdftoolinfometadata.h"
+#include "pdfexception.h"
+
+namespace pdftool
+{
+
+static PDFToolInfoMetadataApplication s_infoMetadataApplication;
+
+QString PDFToolInfoMetadataApplication::getStandardString(StandardString standardString) const
+{
+    switch (standardString)
+    {
+        case Command:
+            return "info-metadata";
+
+        case Name:
+            return PDFToolTranslationContext::tr("Extract document metadata");
+
+        case Description:
+            return PDFToolTranslationContext::tr("Extract document metadata (embedded xml stream).");
+
+        default:
+            Q_ASSERT(false);
+            break;
+    }
+
+    return QString();
+}
+
+int PDFToolInfoMetadataApplication::execute(const PDFToolOptions& options)
+{
+    pdf::PDFDocument document;
+    QByteArray sourceData;
+    if (!readDocument(options, document, &sourceData))
+    {
+        return ErrorDocumentReading;
+    }
+
+    pdf::PDFObject metadata = document.getObject(document.getCatalog()->getMetadata());
+    if (metadata.isStream())
+    {
+        try
+        {
+            QByteArray rawData = document.getDecodedStream(metadata.getStream());
+            PDFConsole::writeData(rawData);
+        }
+        catch (pdf::PDFException e)
+        {
+            PDFConsole::writeError(e.getMessage(), options.outputCodec);
+        }
+    }
+    else
+    {
+        PDFConsole::writeError(PDFToolTranslationContext::tr("Metadata not found in document."), options.outputCodec);
+    }
+
+    return ExitSuccess;
+}
+
+PDFToolAbstractApplication::Options PDFToolInfoMetadataApplication::getOptionsFlags() const
+{
+    return ConsoleFormat | OpenDocument;
+}
+
+}   // namespace pdftool

PdfTool/pdftoolinfometadata.h

@@ -0,0 +1,36 @@
+//    Copyright (C) 2020 Jakub Melka
+//
+//    This file is part of PdfForQt.
+//
+//    PdfForQt 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
+//    (at your option) any later version.
+//
+//    PdfForQt 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 PDFForQt.  If not, see <https://www.gnu.org/licenses/>.
+
+#ifndef PDFTOOLINFOMETADATA_H
+#define PDFTOOLINFOMETADATA_H
+
+#include "pdftoolabstractapplication.h"
+
+namespace pdftool
+{
+
+class PDFToolInfoMetadataApplication : public PDFToolAbstractApplication
+{
+public:
+    virtual QString getStandardString(StandardString standardString) const override;
+    virtual int execute(const PDFToolOptions& options) override;
+    virtual Options getOptionsFlags() const override;
+};
+
+}   // namespace pdftool
+
+#endif // PDFTOOLINFOMETADATA_H