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https://github.com/JakubMelka/PDF4QT.git
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Tool for computing object statistics
This commit is contained in:
Jakub Melka
parent
f06db28b99
commit
e89a26790e
@ -60,6 +60,7 @@ SOURCES += \
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pdftooloptimize.cpp \
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pdftoolrender.cpp \
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pdftoolseparate.cpp \
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pdftoolstatistics.cpp \
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pdftoolunite.cpp \
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pdftoolverifysignatures.cpp \
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pdftoolxml.cpp
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@ -94,6 +95,7 @@ HEADERS += \
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pdftooloptimize.h \
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pdftoolrender.h \
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pdftoolseparate.h \
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pdftoolstatistics.h \
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pdftoolunite.h \
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pdftoolverifysignatures.h \
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pdftoolxml.h
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174
PdfTool/pdftoolstatistics.cpp
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174
PdfTool/pdftoolstatistics.cpp
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@ -0,0 +1,174 @@
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// Copyright (C) 2021 Jakub Melka
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//
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// This file is part of Pdf4Qt.
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//
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// Pdf4Qt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// with the written consent of the copyright owner, any later version.
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//
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// Pdf4Qt 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with Pdf4Qt. If not, see <https://www.gnu.org/licenses/>.
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#include "pdftoolstatistics.h"
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#include "pdfobjectutils.h"
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namespace pdftool
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{
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static PDFToolStatisticsApplication s_statisticsApplication;
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QString PDFToolStatisticsApplication::getStandardString(StandardString standardString) const
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{
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switch (standardString)
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{
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case Command:
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return "statistics";
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case Name:
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return PDFToolTranslationContext::tr("Statistics");
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case Description:
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return PDFToolTranslationContext::tr("Compute statistics of internal objects used in a document.");
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default:
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Q_ASSERT(false);
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break;
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}
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return QString();
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}
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int PDFToolStatisticsApplication::execute(const PDFToolOptions& options)
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{
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pdf::PDFDocument document;
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QByteArray sourceData;
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if (!readDocument(options, document, &sourceData, false))
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{
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return ErrorDocumentReading;
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}
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pdf::PDFObjectClassifier classifier;
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classifier.classify(&document);
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pdf::PDFObjectClassifier::Statistics statistics = classifier.calculateStatistics(&document);
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QLocale locale;
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PDFOutputFormatter formatter(options.outputStyle, options.outputCodec);
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formatter.beginDocument("info", PDFToolTranslationContext::tr("Information about document %1").arg(options.document));
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formatter.endl();
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{
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formatter.beginTable("statistics-objects-by-class", PDFToolTranslationContext::tr("Statistics by Object Class"));
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formatter.beginTableHeaderRow("header");
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formatter.writeTableHeaderColumn("class", PDFToolTranslationContext::tr("Class"), Qt::AlignLeft);
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formatter.writeTableHeaderColumn("percentage", PDFToolTranslationContext::tr("Percentage [%]"), Qt::AlignLeft);
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formatter.writeTableHeaderColumn("count", PDFToolTranslationContext::tr("Count [#]"), Qt::AlignLeft);
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formatter.writeTableHeaderColumn("space-usage", PDFToolTranslationContext::tr("Space Usage [bytes]"), Qt::AlignLeft);
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formatter.endTableHeaderRow();
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qint64 totalBytesCount = 0;
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for (const auto& item : statistics.statistics)
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{
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totalBytesCount += item.second.bytes;
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}
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auto addRow = [&](pdf::PDFObjectClassifier::Type type, QString classText)
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{
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auto it = statistics.statistics.find(type);
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if (it == statistics.statistics.cend())
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{
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// Jakub Melka: no type found
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return;
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}
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const pdf::PDFObjectClassifier::StatisticsItem& statisticsItem = it->second;
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qreal percentage = qreal(100.0) * qreal(statisticsItem.bytes) / qreal(totalBytesCount);
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formatter.beginTableRow("item", int(type));
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formatter.writeTableColumn("class", classText);
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formatter.writeTableColumn("percentage", locale.toString(percentage, 'f', 2), Qt::AlignRight);
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formatter.writeTableColumn("count", locale.toString(statisticsItem.count), Qt::AlignRight);
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formatter.writeTableColumn("byte-usage", locale.toString(statisticsItem.bytes), Qt::AlignRight);
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formatter.endTableRow();
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};
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addRow(pdf::PDFObjectClassifier::Page, PDFToolTranslationContext::tr("Page"));
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addRow(pdf::PDFObjectClassifier::ContentStream, PDFToolTranslationContext::tr("Content Stream"));
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addRow(pdf::PDFObjectClassifier::GraphicState, PDFToolTranslationContext::tr("Graphic State"));
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addRow(pdf::PDFObjectClassifier::ColorSpace, PDFToolTranslationContext::tr("Color Space"));
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addRow(pdf::PDFObjectClassifier::Pattern, PDFToolTranslationContext::tr("Pattern"));
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addRow(pdf::PDFObjectClassifier::Shading, PDFToolTranslationContext::tr("Shading"));
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addRow(pdf::PDFObjectClassifier::Image, PDFToolTranslationContext::tr("Image"));
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addRow(pdf::PDFObjectClassifier::Form, PDFToolTranslationContext::tr("Form"));
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addRow(pdf::PDFObjectClassifier::Font, PDFToolTranslationContext::tr("Font"));
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addRow(pdf::PDFObjectClassifier::Action, PDFToolTranslationContext::tr("Action"));
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addRow(pdf::PDFObjectClassifier::Annotation, PDFToolTranslationContext::tr("Annotation"));
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addRow(pdf::PDFObjectClassifier::None, PDFToolTranslationContext::tr("Other"));
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formatter.endTable();
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}
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formatter.endl();
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{
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formatter.beginTable("statistics-objects-by-type", PDFToolTranslationContext::tr("Statistics by Object Type"));
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formatter.beginTableHeaderRow("header");
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formatter.writeTableHeaderColumn("class", PDFToolTranslationContext::tr("Type") , Qt::AlignLeft);
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formatter.writeTableHeaderColumn("percentage", PDFToolTranslationContext::tr("Percentage [%]"), Qt::AlignLeft);
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formatter.writeTableHeaderColumn("count", PDFToolTranslationContext::tr("Count [#]"), Qt::AlignLeft);
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formatter.endTableHeaderRow();
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qint64 totalObjectCount = 0;
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for (pdf::PDFObject::Type type : pdf::PDFObject::getTypes())
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{
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const qint64 currentObjectCount = statistics.objectCountByType[size_t(type)];
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totalObjectCount += currentObjectCount;
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}
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if (totalObjectCount > 0)
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{
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for (pdf::PDFObject::Type type : pdf::PDFObject::getTypes())
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{
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const qint64 currentObjectCount = statistics.objectCountByType[size_t(type)];
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if (currentObjectCount == 0)
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{
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continue;
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}
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qreal percentage = qreal(100.0) * qreal(currentObjectCount) / qreal(totalObjectCount);
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formatter.beginTableRow("item", int(type));
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formatter.writeTableColumn("type", pdf::PDFObjectUtils::getObjectTypeName(type));
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formatter.writeTableColumn("percentage", locale.toString(percentage, 'f', 2), Qt::AlignRight);
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formatter.writeTableColumn("count", locale.toString(currentObjectCount), Qt::AlignRight);
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formatter.endTableRow();
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}
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}
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formatter.endTable();
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}
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formatter.endDocument();
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PDFConsole::writeText(formatter.getString(), options.outputCodec);
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return ExitSuccess;
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}
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PDFToolAbstractApplication::Options PDFToolStatisticsApplication::getOptionsFlags() const
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{
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return ConsoleFormat | OpenDocument;
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}
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} // namespace pdftool
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36
PdfTool/pdftoolstatistics.h
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36
PdfTool/pdftoolstatistics.h
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@ -0,0 +1,36 @@
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// Copyright (C) 2021 Jakub Melka
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//
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// This file is part of Pdf4Qt.
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//
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// Pdf4Qt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// with the written consent of the copyright owner, any later version.
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//
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// Pdf4Qt 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with Pdf4Qt. If not, see <https://www.gnu.org/licenses/>.
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#ifndef PDFTOOLSTATISTICS_H
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#define PDFTOOLSTATISTICS_H
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#include "pdftoolabstractapplication.h"
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namespace pdftool
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{
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class PDFToolStatisticsApplication : public PDFToolAbstractApplication
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{
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public:
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virtual QString getStandardString(StandardString standardString) const override;
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virtual int execute(const PDFToolOptions& options) override;
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virtual Options getOptionsFlags() const override;
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};
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} // namespace pdftool
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#endif // PDFTOOLSTATISTICS_H
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