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98 lines
3.0 KiB
C++
98 lines
3.0 KiB
C++
/*
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* MinizipExtensions.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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#ifdef USE_SYSTEM_MINIZIP
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#include <minizip/unzip.h>
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#include <minizip/zip.h>
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#include <minizip/ioapi.h>
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#else
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#include "../minizip/unzip.h"
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#include "../minizip/zip.h"
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#include "../minizip/ioapi.h"
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#endif
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// system zlib on old Androids isn't capable of using _64 functions: https://github.com/madler/zlib/pull/436
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#if defined(__ANDROID_API__) && (__ANDROID_API__ < 24)
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#define MINIZIP_NEEDS_32BIT_FUNCS 1
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#endif
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VCMI_LIB_NAMESPACE_BEGIN
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class CInputStream;
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class CInputOutputStream;
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class CMemoryBuffer;
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class DLL_LINKAGE CIOApi
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{
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public:
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virtual ~CIOApi() = default;
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virtual zlib_filefunc64_def getApiStructure() = 0;
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};
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///redirects back to minizip ioapi
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//todo: replace with Virtual FileSystem interface
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class DLL_LINKAGE CDefaultIOApi: public CIOApi
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{
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public:
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zlib_filefunc64_def getApiStructure() override;
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#if MINIZIP_NEEDS_32BIT_FUNCS
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zlib_filefunc_def getApiStructure32();
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#endif
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};
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///redirects all file IO to single stream
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class DLL_LINKAGE CProxyIOApi: public CIOApi
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{
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public:
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CProxyIOApi(CInputOutputStream * buffer);
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~CProxyIOApi() override;
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zlib_filefunc64_def getApiStructure() override;
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private:
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CInputOutputStream * openFile(const boost::filesystem::path & filename, int mode);
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CInputOutputStream * data;
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static voidpf ZCALLBACK openFileProxy(voidpf opaque, const void * filename, int mode);
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static uLong ZCALLBACK readFileProxy(voidpf opaque, voidpf stream, void * buf, uLong size);
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static uLong ZCALLBACK writeFileProxy(voidpf opaque, voidpf stream, const void * buf, uLong size);
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static ZPOS64_T ZCALLBACK tellFileProxy(voidpf opaque, voidpf stream);
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static long ZCALLBACK seekFileProxy(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin);
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static int ZCALLBACK closeFileProxy(voidpf opaque, voidpf stream);
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static int ZCALLBACK errorFileProxy(voidpf opaque, voidpf stream);
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};
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///redirects all file IO to single stream read-only
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class DLL_LINKAGE CProxyROIOApi: public CIOApi
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{
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public:
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CProxyROIOApi(CInputStream * buffer);
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~CProxyROIOApi() override;
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zlib_filefunc64_def getApiStructure() override;
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private:
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CInputStream * openFile(const boost::filesystem::path & filename, int mode);
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CInputStream * data;
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static voidpf ZCALLBACK openFileProxy(voidpf opaque, const void * filename, int mode);
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static uLong ZCALLBACK readFileProxy(voidpf opaque, voidpf stream, void * buf, uLong size);
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static uLong ZCALLBACK writeFileProxy(voidpf opaque, voidpf stream, const void * buf, uLong size);
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static ZPOS64_T ZCALLBACK tellFileProxy(voidpf opaque, voidpf stream);
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static long ZCALLBACK seekFileProxy(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin);
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static int ZCALLBACK closeFileProxy(voidpf opaque, voidpf stream);
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static int ZCALLBACK errorFileProxy(voidpf opaque, voidpf stream);
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};
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VCMI_LIB_NAMESPACE_END
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