File indexing completed on 2024-12-22 04:16:01 

0001 /*
0002  * SPDX-FileCopyrightText: 2022 Sharaf Zaman <shzam@sdf.org>
0003  *
0004  * SPDX-License-Identifier: LGPL-2.0-or-later
0005  */
0006 
0007 #ifndef __KISEXIV2IODEVICE_H_
0008 #define __KISEXIV2IODEVICE_H_
0009 
0010 #include <QFile>
0011 
0012 #include <exiv2/exiv2.hpp>
0013 
0014 #include <kis_global.h>
0015 
0016 #include "kritaexifcommon_export.h"
0017 
0018 class KRITAEXIFCOMMON_EXPORT KisExiv2IODevice : public Exiv2::BasicIo
0019 {
0020 public:
0021 #if EXIV2_TEST_VERSION(0,28,0)
0022     using ptr_type = Exiv2::BasicIo::UniquePtr;
0023 #else
0024     using ptr_type = Exiv2::BasicIo::AutoPtr;
0025 #endif
0026 
0027     KisExiv2IODevice(QString path);
0028     ~KisExiv2IODevice() override;
0029 
0030     int open() override;
0031     int close() override;
0032 #if EXIV2_TEST_VERSION(0,28,0)
0033     size_t write(const Exiv2::byte *data, size_t wcount) override;
0034     size_t write(Exiv2::BasicIo &src) override;
0035     int putb(Exiv2::byte data) override;
0036     Exiv2::DataBuf read(size_t rcount) override;
0037     size_t read(Exiv2::byte *buf, size_t rcount) override;
0038 #else
0039     long write(const Exiv2::byte *data, long wcount) override;
0040     long write(Exiv2::BasicIo &src) override;
0041     int putb(Exiv2::byte data) override;
0042     Exiv2::DataBuf read(long rcount) override;
0043     long read(Exiv2::byte *buf, long rcount) override;
0044 #endif
0045     int getb() override;
0046     void transfer(BasicIo &src) override;
0047 #if defined(_MSC_VER) || EXIV2_TEST_VERSION(0,28,0)
0048     int seek(int64_t offset, Position pos) override;
0049 #else
0050     int seek(long offset, Position pos) override;
0051 #endif
0052 
0053     Exiv2::byte *mmap(bool isWriteable = false) override;
0054 #if EXIV2_TEST_VERSION(0,28,0)
0055     void populateFakeData() override;
0056 #endif
0057     int munmap() override;
0058 #if EXIV2_TEST_VERSION(0,28,0)
0059     size_t tell() const override;
0060 #else
0061     long tell() const override;
0062 #endif
0063     size_t size() const override;
0064     bool isopen() const override;
0065     int error() const override;
0066     bool eof() const override;
0067 #if EXIV2_TEST_VERSION(0,28,0)
0068     const std::string& path() const noexcept override;
0069 #else
0070     std::string path() const override;
0071 #endif
0072 
0073 private:
0074     bool open(QFile::OpenMode mode);
0075     bool renameToCurrent(const QString srcPath);
0076     QString filePathQString() const;
0077 
0078     mutable QFile m_file;
0079 
0080     Exiv2::byte *m_mappedArea;
0081 };
0082 
0083 #endif // __KISEXIV2IODEVICE_H_