File indexing completed on 2024-04-28 04:21:08
0001 // SPDX-FileCopyrightText: 2020 The KPhotoAlbum development team 0002 // SPDX-FileCopyrightText: 2021 Johannes Zarl-Zierl <johannes@zarl-zierl.at> 0003 // 0004 // SPDX-License-Identifier: LicenseRef-KDE-Accepted-GPL 0005 0006 #ifndef KPA_THUMBNAILTOOL_THUMBNAILCACHECONVERTER_H 0007 #define KPA_THUMBNAILTOOL_THUMBNAILCACHECONVERTER_H 0008 0009 class QIODevice; 0010 class QString; 0011 class QTextStream; 0012 0013 namespace KPAThumbnailTool 0014 { 0015 /** 0016 * @brief Convert a version 5 ThumbnailCache index file to version 4. 0017 * The old thumbnailindex file is backed up with a suffic '.bak'. 0018 * 0019 * This function does not use the ThumbnailCache code at all, 0020 * but just reads the file and converts the header accordingly. 0021 * 0022 * This way, code in ThumbnailCache is not bloated by a niche-usecase. 0023 * 0024 * @param indexFilename 0025 * @param err an output stream for error messages 0026 * @return 0 on success, 1 otherwise. 0027 */ 0028 int convertV5ToV4Cache(const QString &indexFilename, QTextStream &err); 0029 0030 /** 0031 * @brief Convert a version 5 ThumbnailCache index file to version 4. 0032 * This function does not use the ThumbnailCache code at all, 0033 * but just reads the file and converts the header accordingly. 0034 * 0035 * This way, code in ThumbnailCache is not bloated by a niche-usecase. 0036 * @param fromFile the (already opened) QIODevice containing the old index data 0037 * @param toFile an open QIODevice to write to 0038 * @param err a stream for error messages. 0039 * @return \c true on success, \c false if the input file is not valid. 0040 */ 0041 bool convertV5ToV4Cache(QIODevice &fromFile, QIODevice &toFile, QTextStream &err); 0042 } 0043 0044 #endif 0045 0046 // vi:expandtab:tabstop=4 shiftwidth=4: