qt5/src/poppler-private.cc - third_party/poppler - Git at Google

 /* poppler-private.cc: qt interface to poppler
  * Copyright (C) 2005, Net Integration Technologies, Inc.
  * Copyright (C) 2006, 2011, 2015, 2017-2019 by Albert Astals Cid <aacid@kde.org>
  * Copyright (C) 2008, 2010, 2011, 2014 by Pino Toscano <pino@kde.org>
  * Copyright (C) 2013 by Thomas Freitag <Thomas.Freitag@alfa.de>
  * Copyright (C) 2013 Adrian Johnson <ajohnson@redneon.com>
  * Copyright (C) 2016 Jakub Alba <jakubalba@gmail.com>
  * Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>. Work sponsored by the LiMux project of the city of Munich
  * Copyright (C) 2018, 2019 Adam Reichold <adam.reichold@t-online.de>
  * Copyright (C) 2019 Oliver Sander <oliver.sander@tu-dresden.de>
  * Copyright (C) 2019 João Netto <joaonetto901@gmail.com>
  * Inspired on code by
  * Copyright (C) 2004 by Albert Astals Cid <tsdgeos@terra.es>
  * Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2, or (at your option)
  * any later version.
  *
  * This program 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 General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  */

 #include "poppler-private.h"
 #include "poppler-form.h"

 #include <QtCore/QByteArray>
 #include <QtCore/QDebug>
 #include <QtCore/QVariant>

 #include <Link.h>
 #include <Outline.h>
 #include <PDFDocEncoding.h>
 #include <UnicodeMap.h>

 namespace Poppler {

 namespace Debug {

     static void qDebugDebugFunction(const QString &message, const QVariant & /*closure*/)
     {
         qDebug() << message;
     }

     PopplerDebugFunc debugFunction = qDebugDebugFunction;
     QVariant debugClosure;

 }

     static UnicodeMap *utf8Map = nullptr;

     void setDebugErrorFunction(PopplerDebugFunc function, const QVariant &closure)
     {
         Debug::debugFunction = function ? function : Debug::qDebugDebugFunction;
         Debug::debugClosure = closure;
     }

     static void qt5ErrorFunction(void * /*data*/, ErrorCategory /*category*/, Goffset pos, const char *msg)
     {
         QString emsg;

         if (pos >= 0)
         {
             emsg = QStringLiteral("Error (%1): ").arg(pos);
         }
         else
         {
             emsg = QStringLiteral("Error: ");
         }
         emsg += QString::fromLatin1(msg);
         (*Debug::debugFunction)(emsg, Debug::debugClosure);
     }

     QString unicodeToQString(const Unicode* u, int len) {
         if (!utf8Map)
         {
                 GooString enc("UTF-8");
                 utf8Map = globalParams->getUnicodeMap(&enc);
                 utf8Map->incRefCnt();
         }

         // ignore the last character if it is 0x0
         if ((len > 0) && (u[len - 1] == 0))
         {
             --len;
         }

         GooString convertedStr;
         for (int i = 0; i < len; ++i)
         {
             char buf[8];
             const int n = utf8Map->mapUnicode(u[i], buf, sizeof(buf));
             convertedStr.append(buf, n);
         }

         return QString::fromUtf8(convertedStr.c_str(), convertedStr.getLength());
     }

     QString UnicodeParsedString(const GooString *s1) {
         if ( !s1 || s1->getLength() == 0 )
             return QString();

         if ( s1->hasUnicodeMarker() || s1->hasUnicodeMarkerLE() )
         {
             return QString::fromUtf16(reinterpret_cast<const ushort *>(s1->c_str()), s1->getLength() / 2);
         }
         else
         {
             int stringLength;
             const char *cString = pdfDocEncodingToUTF16(s1, &stringLength);
             auto result = QString::fromUtf16(reinterpret_cast<const ushort *>(cString), stringLength / 2);
             delete[] cString;
             return result;
         }
     }

     GooString *QStringToUnicodeGooString(const QString &s) {
         int len = s.length() * 2 + 2;
         char *cstring = (char *)gmallocn(len, sizeof(char));
         cstring[0] = (char)0xfe;
         cstring[1] = (char)0xff;
         for (int i = 0; i < s.length(); ++i)
         {
             cstring[2+i*2] = s.at(i).row();
             cstring[3+i*2] = s.at(i).cell();
         }
         GooString *ret = new GooString(cstring, len);
         gfree(cstring);
         return ret;
     }

     GooString *QStringToGooString(const QString &s) {
         int len = s.length();
         char *cstring = (char *)gmallocn(s.length(), sizeof(char));
         for (int i = 0; i < len; ++i)
             cstring[i] = s.at(i).unicode();
         GooString *ret = new GooString(cstring, len);
         gfree(cstring);
         return ret;
     }

     GooString *QDateTimeToUnicodeGooString(const QDateTime &dt) {
         if (!dt.isValid()) {
             return nullptr;
         }

         return QStringToUnicodeGooString(dt.toUTC().toString(QStringLiteral("yyyyMMddhhmmss+00'00'")));
     }

     Annot::AdditionalActionsType toPopplerAdditionalActionType(Annotation::AdditionalActionType type) {
         switch ( type )
         {
             case Annotation::CursorEnteringAction:  return Annot::actionCursorEntering;
             case Annotation::CursorLeavingAction:   return Annot::actionCursorLeaving;
             case Annotation::MousePressedAction:    return Annot::actionMousePressed;
             case Annotation::MouseReleasedAction:   return Annot::actionMouseReleased;
             case Annotation::FocusInAction:         return Annot::actionFocusIn;
             case Annotation::FocusOutAction:        return Annot::actionFocusOut;
             case Annotation::PageOpeningAction:     return Annot::actionPageOpening;
             case Annotation::PageClosingAction:     return Annot::actionPageClosing;
             case Annotation::PageVisibleAction:     return Annot::actionPageVisible;
             case Annotation::PageInvisibleAction:   return Annot::actionPageInvisible;
         }

         return Annot::actionCursorEntering;
     }

     static void linkActionToTocItem( const ::LinkAction * a, DocumentData * doc, QDomElement * e )
     {
         if ( !a || !e )
             return;

         switch ( a->getKind() )
         {
             case actionGoTo:
             {
                 // page number is contained/referenced in a LinkGoTo
                 const LinkGoTo * g = static_cast< const LinkGoTo * >( a );
                 const LinkDest * destination = g->getDest();
                 if ( !destination && g->getNamedDest() )
                 {
                     // no 'destination' but an internal 'named reference'. we could
                     // get the destination for the page now, but it's VERY time consuming,
                     // so better storing the reference and provide the viewport on demand
                     const GooString *s = g->getNamedDest();
                     QChar *charArray = new QChar[s->getLength()];
                     for (int i = 0; i < s->getLength(); ++i) charArray[i] = QChar(s->c_str()[i]);
                     QString aux(charArray, s->getLength());
                     e->setAttribute( QStringLiteral("DestinationName"), aux );
                     delete[] charArray;
                 }
                 else if ( destination && destination->isOk() )
                 {
                     LinkDestinationData ldd(destination, nullptr, doc, false);
                     e->setAttribute( QStringLiteral("Destination"), LinkDestination(ldd).toString() );
                 }
                 break;
             }
             case actionGoToR:
             {
                 // page number is contained/referenced in a LinkGoToR
                 const LinkGoToR * g = static_cast< const LinkGoToR * >( a );
                 const LinkDest * destination = g->getDest();
                 if ( !destination && g->getNamedDest() )
                 {
                     // no 'destination' but an internal 'named reference'. we could
                     // get the destination for the page now, but it's VERY time consuming,
                     // so better storing the reference and provide the viewport on demand
                     const GooString *s = g->getNamedDest();
                     QChar *charArray = new QChar[s->getLength()];
                     for (int i = 0; i < s->getLength(); ++i) charArray[i] = QChar(s->c_str()[i]);
                     QString aux(charArray, s->getLength());
                     e->setAttribute( QStringLiteral("DestinationName"), aux );
                     delete[] charArray;
                 }
                 else if ( destination && destination->isOk() )
                 {
                     LinkDestinationData ldd(destination, nullptr, doc, g->getFileName() != nullptr);
                     e->setAttribute( QStringLiteral("Destination"), LinkDestination(ldd).toString() );
                 }
                 e->setAttribute( QStringLiteral("ExternalFileName"), g->getFileName()->c_str() );
                 break;
             }
             case actionURI:
             {
                 const LinkURI * u = static_cast< const LinkURI * >( a );
                 e->setAttribute( QStringLiteral("DestinationURI"), u->getURI()->c_str() );
             }
             default: ;
         }
     }

     DocumentData::~DocumentData()
     {
         qDeleteAll(m_embeddedFiles);
         delete (OptContentModel *)m_optContentModel;
         delete doc;

         QMutexLocker locker{&mutex};

         count --;
         if ( count == 0 )
         {
             utf8Map = nullptr;
             delete globalParams;
         }
       }

     void DocumentData::init()
     {
         m_backend = Document::SplashBackend;
         paperColor = Qt::white;
         m_hints = 0;
         m_optContentModel = nullptr;

         QMutexLocker locker{&mutex};

         if ( count == 0 )
         {
             utf8Map = nullptr;
             globalParams = new GlobalParams();
             setErrorCallback(qt5ErrorFunction, nullptr);
         }
         count ++;
     }


     void DocumentData::addTocChildren( QDomDocument * docSyn, QDomNode * parent, const std::vector<::OutlineItem*> * items )
     {
         for ( std::size_t i = 0; i < items->size(); ++i )
         {
             // iterate over every object in 'items'
             ::OutlineItem * outlineItem = (*items)[ i ];

             // 1. create element using outlineItem's title as tagName
             QString name;
             const Unicode * uniChar = outlineItem->getTitle();
             int titleLength = outlineItem->getTitleLength();
             name = unicodeToQString(uniChar, titleLength);
             if ( name.isEmpty() )
                 continue;

             QDomElement item = docSyn->createElement( name );
             parent->appendChild( item );

             // 2. find the page the link refers to
             const ::LinkAction * a = outlineItem->getAction();
             linkActionToTocItem( a, this, &item );

             item.setAttribute( QStringLiteral("Open"), QVariant( (bool)outlineItem->isOpen() ).toString() );

             // 3. recursively descend over children
             outlineItem->open();
             const std::vector<::OutlineItem*> * children = outlineItem->getKids();
             if ( children )
                 addTocChildren( docSyn, &item, children );
         }
     }

     FormWidget *FormFieldData::getFormWidget( const FormField *f )
     {
         return f->m_formData->fm;
     }

     FormFieldIconData *FormFieldIconData::getData( const FormFieldIcon &f )
     {
         return f.d_ptr;
     }

 }
	/* poppler-private.cc: qt interface to poppler
	* Copyright (C) 2005, Net Integration Technologies, Inc.
	* Copyright (C) 2006, 2011, 2015, 2017-2019 by Albert Astals Cid <aacid@kde.org>
	* Copyright (C) 2008, 2010, 2011, 2014 by Pino Toscano <pino@kde.org>
	* Copyright (C) 2013 by Thomas Freitag <Thomas.Freitag@alfa.de>
	* Copyright (C) 2013 Adrian Johnson <ajohnson@redneon.com>
	* Copyright (C) 2016 Jakub Alba <jakubalba@gmail.com>
	* Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>. Work sponsored by the LiMux project of the city of Munich
	* Copyright (C) 2018, 2019 Adam Reichold <adam.reichold@t-online.de>
	* Copyright (C) 2019 Oliver Sander <oliver.sander@tu-dresden.de>
	* Copyright (C) 2019 João Netto <joaonetto901@gmail.com>
	* Inspired on code by
	* Copyright (C) 2004 by Albert Astals Cid <tsdgeos@terra.es>
	* Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2, or (at your option)
	* any later version.
	*
	* This program 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 General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
	*/

	#include "poppler-private.h"
	#include "poppler-form.h"

	#include <QtCore/QByteArray>
	#include <QtCore/QDebug>
	#include <QtCore/QVariant>

	#include <Link.h>
	#include <Outline.h>
	#include <PDFDocEncoding.h>
	#include <UnicodeMap.h>

	namespace Poppler {

	namespace Debug {

	static void qDebugDebugFunction(const QString &message, const QVariant & /closure/)
	{
	qDebug() << message;
	}

	PopplerDebugFunc debugFunction = qDebugDebugFunction;
	QVariant debugClosure;

	}

	static UnicodeMap *utf8Map = nullptr;

	void setDebugErrorFunction(PopplerDebugFunc function, const QVariant &closure)
	{
	Debug::debugFunction = function ? function : Debug::qDebugDebugFunction;
	Debug::debugClosure = closure;
	}

	static void qt5ErrorFunction(void * /data/, ErrorCategory /category/, Goffset pos, const char *msg)
	{
	QString emsg;

	if (pos >= 0)
	{
	emsg = QStringLiteral("Error (%1): ").arg(pos);
	}
	else
	{
	emsg = QStringLiteral("Error: ");
	}
	emsg += QString::fromLatin1(msg);
	(*Debug::debugFunction)(emsg, Debug::debugClosure);
	}

	QString unicodeToQString(const Unicode* u, int len) {
	if (!utf8Map)
	{
	GooString enc("UTF-8");
	utf8Map = globalParams->getUnicodeMap(&enc);
	utf8Map->incRefCnt();
	}

	// ignore the last character if it is 0x0
	if ((len > 0) && (u[len - 1] == 0))
	{
	--len;
	}

	GooString convertedStr;
	for (int i = 0; i < len; ++i)
	{
	char buf[8];
	const int n = utf8Map->mapUnicode(u[i], buf, sizeof(buf));
	convertedStr.append(buf, n);
	}

	return QString::fromUtf8(convertedStr.c_str(), convertedStr.getLength());
	}

	QString UnicodeParsedString(const GooString *s1) {
	if ( !s1 \|\| s1->getLength() == 0 )
	return QString();

	if ( s1->hasUnicodeMarker() \|\| s1->hasUnicodeMarkerLE() )
	{
	return QString::fromUtf16(reinterpret_cast<const ushort *>(s1->c_str()), s1->getLength() / 2);
	}
	else
	{
	int stringLength;
	const char *cString = pdfDocEncodingToUTF16(s1, &stringLength);
	auto result = QString::fromUtf16(reinterpret_cast<const ushort *>(cString), stringLength / 2);
	delete[] cString;
	return result;
	}
	}

	GooString *QStringToUnicodeGooString(const QString &s) {
	int len = s.length() * 2 + 2;
	char cstring = (char )gmallocn(len, sizeof(char));
	cstring[0] = (char)0xfe;
	cstring[1] = (char)0xff;
	for (int i = 0; i < s.length(); ++i)
	{
	cstring[2+i*2] = s.at(i).row();
	cstring[3+i*2] = s.at(i).cell();
	}
	GooString *ret = new GooString(cstring, len);
	gfree(cstring);
	return ret;
	}

	GooString *QStringToGooString(const QString &s) {
	int len = s.length();
	char cstring = (char )gmallocn(s.length(), sizeof(char));
	for (int i = 0; i < len; ++i)
	cstring[i] = s.at(i).unicode();
	GooString *ret = new GooString(cstring, len);
	gfree(cstring);
	return ret;
	}

	GooString *QDateTimeToUnicodeGooString(const QDateTime &dt) {
	if (!dt.isValid()) {
	return nullptr;
	}

	return QStringToUnicodeGooString(dt.toUTC().toString(QStringLiteral("yyyyMMddhhmmss+00'00'")));
	}

	Annot::AdditionalActionsType toPopplerAdditionalActionType(Annotation::AdditionalActionType type) {
	switch ( type )
	{
	case Annotation::CursorEnteringAction: return Annot::actionCursorEntering;
	case Annotation::CursorLeavingAction: return Annot::actionCursorLeaving;
	case Annotation::MousePressedAction: return Annot::actionMousePressed;
	case Annotation::MouseReleasedAction: return Annot::actionMouseReleased;
	case Annotation::FocusInAction: return Annot::actionFocusIn;
	case Annotation::FocusOutAction: return Annot::actionFocusOut;
	case Annotation::PageOpeningAction: return Annot::actionPageOpening;
	case Annotation::PageClosingAction: return Annot::actionPageClosing;
	case Annotation::PageVisibleAction: return Annot::actionPageVisible;
	case Annotation::PageInvisibleAction: return Annot::actionPageInvisible;
	}

	return Annot::actionCursorEntering;
	}

	static void linkActionToTocItem( const ::LinkAction * a, DocumentData * doc, QDomElement * e )
	{
	if ( !a \|\| !e )
	return;

	switch ( a->getKind() )
	{
	case actionGoTo:
	{
	// page number is contained/referenced in a LinkGoTo
	const LinkGoTo * g = static_cast< const LinkGoTo * >( a );
	const LinkDest * destination = g->getDest();
	if ( !destination && g->getNamedDest() )
	{
	// no 'destination' but an internal 'named reference'. we could
	// get the destination for the page now, but it's VERY time consuming,
	// so better storing the reference and provide the viewport on demand
	const GooString *s = g->getNamedDest();
	QChar *charArray = new QChar[s->getLength()];
	for (int i = 0; i < s->getLength(); ++i) charArray[i] = QChar(s->c_str()[i]);
	QString aux(charArray, s->getLength());
	e->setAttribute( QStringLiteral("DestinationName"), aux );
	delete[] charArray;
	}
	else if ( destination && destination->isOk() )
	{
	LinkDestinationData ldd(destination, nullptr, doc, false);
	e->setAttribute( QStringLiteral("Destination"), LinkDestination(ldd).toString() );
	}
	break;
	}
	case actionGoToR:
	{
	// page number is contained/referenced in a LinkGoToR
	const LinkGoToR * g = static_cast< const LinkGoToR * >( a );
	const LinkDest * destination = g->getDest();
	if ( !destination && g->getNamedDest() )
	{
	// no 'destination' but an internal 'named reference'. we could
	// get the destination for the page now, but it's VERY time consuming,
	// so better storing the reference and provide the viewport on demand
	const GooString *s = g->getNamedDest();
	QChar *charArray = new QChar[s->getLength()];
	for (int i = 0; i < s->getLength(); ++i) charArray[i] = QChar(s->c_str()[i]);
	QString aux(charArray, s->getLength());
	e->setAttribute( QStringLiteral("DestinationName"), aux );
	delete[] charArray;
	}
	else if ( destination && destination->isOk() )
	{
	LinkDestinationData ldd(destination, nullptr, doc, g->getFileName() != nullptr);
	e->setAttribute( QStringLiteral("Destination"), LinkDestination(ldd).toString() );
	}
	e->setAttribute( QStringLiteral("ExternalFileName"), g->getFileName()->c_str() );
	break;
	}
	case actionURI:
	{
	const LinkURI * u = static_cast< const LinkURI * >( a );
	e->setAttribute( QStringLiteral("DestinationURI"), u->getURI()->c_str() );
	}
	default: ;
	}
	}

	DocumentData::~DocumentData()
	{
	qDeleteAll(m_embeddedFiles);
	delete (OptContentModel *)m_optContentModel;
	delete doc;

	QMutexLocker locker{&mutex};

	count --;
	if ( count == 0 )
	{
	utf8Map = nullptr;
	delete globalParams;
	}
	}

	void DocumentData::init()
	{
	m_backend = Document::SplashBackend;
	paperColor = Qt::white;
	m_hints = 0;
	m_optContentModel = nullptr;

	QMutexLocker locker{&mutex};

	if ( count == 0 )
	{
	utf8Map = nullptr;
	globalParams = new GlobalParams();
	setErrorCallback(qt5ErrorFunction, nullptr);
	}
	count ++;
	}


	void DocumentData::addTocChildren( QDomDocument * docSyn, QDomNode * parent, const std::vector<::OutlineItem> items )
	{
	for ( std::size_t i = 0; i < items->size(); ++i )
	{
	// iterate over every object in 'items'
	::OutlineItem * outlineItem = (*items)[ i ];

	// 1. create element using outlineItem's title as tagName
	QString name;
	const Unicode * uniChar = outlineItem->getTitle();
	int titleLength = outlineItem->getTitleLength();
	name = unicodeToQString(uniChar, titleLength);
	if ( name.isEmpty() )
	continue;

	QDomElement item = docSyn->createElement( name );
	parent->appendChild( item );

	// 2. find the page the link refers to
	const ::LinkAction * a = outlineItem->getAction();
	linkActionToTocItem( a, this, &item );

	item.setAttribute( QStringLiteral("Open"), QVariant( (bool)outlineItem->isOpen() ).toString() );

	// 3. recursively descend over children
	outlineItem->open();
	const std::vector<::OutlineItem> children = outlineItem->getKids();
	if ( children )
	addTocChildren( docSyn, &item, children );
	}
	}

	FormWidget FormFieldData::getFormWidget( const FormField f )
	{
	return f->m_formData->fm;
	}

	FormFieldIconData *FormFieldIconData::getData( const FormFieldIcon &f )
	{
	return f.d_ptr;
	}

	}