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/*
* CZipLoader.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
*
*/
#pragma once
#include "ISimpleResourceLoader.h"
#include "CInputStream.h"
#include "ResourceID.h"
#include "CCompressedStream.h"
#include "MinizipExtensions.h"
class DLL_LINKAGE CZipStream : public CBufferedStream
{
unzFile file;
public:
/**
* @brief constructs zip stream from already opened file
* @param api virtual filesystem interface
* @param archive path to archive to open
* @param filepos position of file to open
*/
CZipStream(std::shared_ptr<CIOApi> api, const boost::filesystem::path & archive, unz64_file_pos filepos);
~CZipStream();
si64 getSize() override;
ui32 calculateCRC32() override;
protected:
si64 readMore(ui8 * data, si64 size) override;
};
class DLL_LINKAGE CZipLoader : public ISimpleResourceLoader
{
std::shared_ptr<CIOApi> ioApi;
zlib_filefunc64_def zlibApi;
boost::filesystem::path archiveName;
std::string mountPoint;
std::unordered_map<ResourceID, unz64_file_pos> files;
std::unordered_map<ResourceID, unz64_file_pos> listFiles(const std::string & mountPoint, const boost::filesystem::path &archive);
public:
CZipLoader(const std::string & mountPoint, const boost::filesystem::path & archive, std::shared_ptr<CIOApi> api = std::shared_ptr<CIOApi>(new CDefaultIOApi()));
/// 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;
void updateFilteredFiles(std::function<bool(const std::string &)> filter) const override {}
std::unordered_set<ResourceID> getFilteredFiles(std::function<bool(const ResourceID &)> filter) const override;
};
namespace ZipArchive
{
/// List all files present in archive
std::vector<std::string> DLL_LINKAGE listFiles(boost::filesystem::path filename);
/// extracts all files from archive "from" into destination directory "where". Directory must exist
bool DLL_LINKAGE extract(boost::filesystem::path from, boost::filesystem::path where);
///same as above, but extracts only files mentioned in "what" list
bool DLL_LINKAGE extract(boost::filesystem::path from, boost::filesystem::path where, std::vector<std::string> what);
}
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