qgssourcecache.h

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/***************************************************************************
                         qgssourcecache.h
                         ---------------
    begin                : July 2020
    copyright            : (C) 2020 by Mathieu Pellerin
    email                : nirvn dot asia at gmail dot com
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSSOURCECACHE_H
#define QGSSOURCECACHE_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgsabstractcontentcache.h"
 
class QTemporaryDir;
 
#ifndef SIP_RUN


class CORE_EXPORT QgsSourceCacheEntry : public QgsAbstractContentCacheEntry
{
  public:
    QgsSourceCacheEntry( const QString &path );

    QString filePath;
 
    int dataSize() const override;
    void dump() const override;
    bool isEqual( const QgsAbstractContentCacheEntry *other ) const override;
};

#endif

#ifdef SIP_RUN
class CORE_EXPORT QgsSourceCache : public QgsAbstractContentCacheBase // for sip we skip to the base class and avoid the template difficulty
{
#else
class CORE_EXPORT QgsSourceCache : public QgsAbstractContentCache< QgsSourceCacheEntry >
{
#endif
    Q_OBJECT
 
  public:
    QgsSourceCache( QObject *parent SIP_TRANSFERTHIS = nullptr );

    QString localFilePath( const QString &path, bool blocking = false );
 
  signals:

    void remoteSourceFetched( const QString &url );
 
  private:
    QString fetchSource( const QString &path, bool &isBroken, bool blocking = false ) const;
 
    std::unique_ptr< QTemporaryDir > temporaryDir;
};
 
#endif // QGSSOURCECACHE_H