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- #pragma once
- /*
- * CArchiveLoader.h, part of VCMI engine
- *
- * Authors: listed in file AUTHORS in main folder
- *
- * License: GNU General Public License v2.0 or later
- * Full text of license available in license.txt file, in main folder
- *
- */
- #include "ISimpleResourceLoader.h"
- #include "ResourceID.h"
- class CFileInputStream;
- /**
- * A struct which holds information about the archive entry e.g. where it is located in space of the archive container.
- */
- struct ArchiveEntry
- {
- /**
- * Default c-tor.
- */
- ArchiveEntry();
- /** Entry name **/
- std::string name;
- /** Distance in bytes from beginning **/
- int offset;
- /** Size without compression in bytes **/
- int fullSize;
- /** Size with compression in bytes or 0 if not compressed **/
- int compressedSize;
- };
- /**
- * A class which can scan and load files of a LOD archive.
- */
- class DLL_LINKAGE CArchiveLoader : public ISimpleResourceLoader
- {
- public:
- /**
- * Ctor.
- *
- * The file extension of the param archive determines the type of the Lod file.
- * These are valid extensions: .LOD, .SND, .VID
- *
- * @param archive Specifies the file path to the archive which should be indexed and loaded.
- *
- * @throws std::runtime_error if the archive wasn't found or if the archive isn't supported
- */
- CArchiveLoader(std::string mountPoint, boost::filesystem::path archive);
- /// Interface implementation
- /// @see ISimpleResourceLoader
- std::unique_ptr<CInputStream> load(const ResourceID & resourceName) const override;
- bool existsResource(const ResourceID & resourceName) const override;
- std::string getMountPoint() const override;
- std::unordered_set<ResourceID> getFilteredFiles(std::function<bool(const ResourceID &)> filter) const override;
- private:
- /**
- * Initializes a LOD archive.
- *
- * @param fileStream File stream to the .lod archive
- */
- void initLODArchive(const std::string &mountPoint, CFileInputStream & fileStream);
- /**
- * Initializes a VID archive.
- *
- * @param fileStream File stream to the .vid archive
- */
- void initVIDArchive(const std::string &mountPoint, CFileInputStream & fileStream);
- /**
- * Initializes a SND archive.
- *
- * @param fileStream File stream to the .snd archive
- */
- void initSNDArchive(const std::string &mountPoint, CFileInputStream & fileStream);
- /** The file path to the archive which is scanned and indexed. */
- boost::filesystem::path archive;
- std::string mountPoint;
- /** Holds all entries of the archive file. An entry can be accessed via the entry name. **/
- std::unordered_map<ResourceID, ArchiveEntry> entries;
- };
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