From 16f738ecee689c6feb2acb7e4ef4d9bb4144ae7d Mon Sep 17 00:00:00 2001
From: Tomas Bzatek <tbzatek@users.sourceforge.net>
Date: Sun, 8 Jun 2008 11:04:43 +0200
Subject: Initial commit

---
 zip/ZipArchive/BaseLibCompressor.h | 198 +++++++++++++++++++++++++++++++++++++
 1 file changed, 198 insertions(+)
 create mode 100644 zip/ZipArchive/BaseLibCompressor.h

(limited to 'zip/ZipArchive/BaseLibCompressor.h')

diff --git a/zip/ZipArchive/BaseLibCompressor.h b/zip/ZipArchive/BaseLibCompressor.h
new file mode 100644
index 0000000..4bda925
--- /dev/null
+++ b/zip/ZipArchive/BaseLibCompressor.h
@@ -0,0 +1,198 @@
+////////////////////////////////////////////////////////////////////////////////
+// This source file is part of the ZipArchive library source distribution and
+// is Copyrighted 2000 - 2007 by Artpol Software - Tadeusz Dracz
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+// 
+// For the licensing details refer to the License.txt file.
+//
+// Web Site: http://www.artpol-software.com
+////////////////////////////////////////////////////////////////////////////////
+
+/**
+* \file BaseLibCompressor.h
+*	Includes the ZipArchiveLib::CBaseLibCompressor class.
+*
+*/
+
+#if !defined(ZIPARCHIVE_BASELIBCOMPRESSOR_DOT_H)
+#define ZIPARCHIVE_BASELIBCOMPRESSOR_DOT_H
+
+#if _MSC_VER > 1000
+#pragma once
+#endif
+
+#include "ZipExport.h"
+#include "ZipCompressor.h"
+#include "ZipCollections.h"
+#include "ZipException.h"
+
+namespace ZipArchiveLib
+{
+
+/**
+	A base class for compressors that use external libraries, such as zlib or bzip2.
+*/
+class ZIP_API CBaseLibCompressor : public CZipCompressor
+{	
+public:
+	/**
+		Represents options of compressors that use external libraries.
+
+		\see
+			<a href="kb">0610231446|options</a>
+		\see
+			CZipArchive::SetCompressionOptions
+	*/
+	struct ZIP_API COptions : CZipCompressor::COptions
+	{
+		COptions()
+		{
+			m_bDetectLibMemoryLeaks = true;
+		}
+
+		/**		
+			\c true, if the ZipArchive Library should detect memory leaks in an external library; \c false otherwise. 
+			Recommended to be set to \c true.
+		*/
+		bool m_bDetectLibMemoryLeaks;
+	};
+
+	/**
+		Initializes a new instance of the CBaseLibCompressor class.
+
+		\param pStorage
+			The current storage object.
+	 */
+	CBaseLibCompressor(CZipStorage* pStorage)
+		:CZipCompressor(pStorage)
+	{
+	}
+	
+	void InitDecompression(CZipFileHeader* pFile, CZipCryptograph* pCryptograph)
+	{
+		CZipCompressor::InitDecompression(pFile, pCryptograph);
+		m_bDecompressionDone = false;
+	}	
+
+	~CBaseLibCompressor()
+	{
+		EmptyPtrList();
+	}
+protected:	
+
+	/**
+		A memory allocation method called by an external library.
+
+		\param opaque
+			Internal data.
+
+		\param items
+			The number of blocks to allocate.
+
+		\param size
+			The size of each block to allocate.
+
+		\return 
+			The address of a newly allocated memory.
+	*/
+	static void* _zipalloc(void* opaque, UINT items, UINT size)
+	{
+		void* p = new char[size * items];
+		if (opaque)
+		{
+			CZipPtrList<void*>* list  = (CZipPtrList<void*>*) opaque;
+			list->AddTail(p);
+		}
+		return p;
+	}
+
+	/**
+		A memory deallocation method called by an external library.
+
+		\param opaque
+			Internal data.
+
+		\param address
+			Memory address to free.
+	*/
+	static void _zipfree(void* opaque, void* address)
+	{
+		if (opaque)
+		{
+			CZipPtrList<void*>* list  = (CZipPtrList<void*>*) opaque;
+			CZipPtrListIter iter = list->Find(address);
+			if (list->IteratorValid(iter))
+				list->RemoveAt(iter);
+		}
+		delete[] (char*) address;
+	}
+
+	/**
+		Frees the memory allocated by an external library that hasn't been freed
+		due to an error in the library (usually never happens).
+	*/
+	void EmptyPtrList();
+
+	/**
+		Checks, if \a iErr value is an error code.
+
+		\param iErr
+			The code to check.
+
+		\return
+			\c true, if \a iErr is an error code; \c false otherwise.
+	*/
+	virtual bool IsCodeErrorOK(int iErr) const = 0;
+
+	/**
+		Checks, if \a iErr value is an error code and throws an exception, if it is.
+
+		\param iErr
+			The error code.
+
+		\note
+			Throws exceptions.
+	*/
+	void CheckForError(int iErr)
+	{
+		if (!IsCodeErrorOK(iErr))
+			ThrowError(iErr, true);
+	}
+
+	/**
+		Sets an address of internal data used in ZipArchive Library memory allocation and deallocation methods.
+
+		\param opaque
+			Receives an address on the internal data.
+		\param pOptions
+			The current decompressor options.
+	*/
+	void SetOpaque(void** opaque, const	COptions* pOptions);
+
+	/**
+		Signalizes, that the decompression process reached the end of the compressed data. It is internally set by derived classes.
+	*/
+	bool m_bDecompressionDone;
+private:
+	typedef CZipPtrList<void*>::iterator CZipPtrListIter;
+
+#if (_MSC_VER > 1000) && (defined ZIP_HAS_DLL)
+	#pragma warning (push)
+	#pragma warning( disable : 4251 ) // needs to have dll-interface to be used by clients of class
+#endif
+
+	CZipPtrList<void*> m_list; ///< A list holding pointers to the memory areas allocated by an external library.
+
+#if (_MSC_VER > 1000) && (defined ZIP_HAS_DLL)
+	#pragma warning( pop)
+#endif
+
+};
+
+} // namespace
+
+#endif
-- 
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