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91 lines
3.1 KiB
91 lines
3.1 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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Additional permissions under GNU GPL version 3 section 7 |
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If you modify this Program, or any covered work, by linking or |
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
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(or a modified version of those libraries), |
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
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licensors of this Program grant you additional |
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permission to convey the resulting work. Corresponding Source for a |
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non-source form of such a combination shall include the source code for |
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
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work. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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#ifndef plZlibStream_h_inc |
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#define plZlibStream_h_inc |
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#include "hsStream.h" |
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#include <string> |
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// |
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// This is for reading a .gz file from a buffer, and writing the uncompressed data to a file. |
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// Call open with the name of the uncompressed file, then call write with the compressed data. |
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// |
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class plZlibStream : public hsStream |
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{ |
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protected: |
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hsStream* fOutput; |
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void* fZStream; |
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bool fDecompressedOk; |
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enum Validate { kNeedMoreData, kInvalidHeader, kValidHeader }; |
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Validate fHeader; |
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std::vector<uint8_t> fHeaderCache; |
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// needed for rewind function |
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plFileName fFilename; |
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const char* fMode; |
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int IValidateGzHeader(uint32_t byteCount, const void* buffer); |
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public: |
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plZlibStream(); |
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virtual ~plZlibStream(); |
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virtual bool Open(const plFileName& filename, const char* mode); |
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virtual bool Close(); |
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virtual uint32_t Write(uint32_t byteCount, const void* buffer); |
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// Since most functions don't check the return value from Write, you can |
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// call this after you've passed in all your data to determine if it |
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// decompressed ok |
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bool DecompressedOk() { return fDecompressedOk; } |
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// You can't use these |
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virtual bool AtEnd(); |
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virtual uint32_t Read(uint32_t byteCount, void* buffer); |
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virtual void Skip(uint32_t deltaByteCount); |
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virtual void Rewind(); |
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virtual void FastFwd(); |
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virtual uint32_t GetEOF(); |
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}; |
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#endif // plZlibStream_h_inc
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