pckunpck.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: pckunpck.h,v 1.4.28.3 2004/07/09 01:48:00 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef PCKUNPCK_H
- #define PCKUNPCK_H
- /* Unfortunate but necessary includes */
- #include "hxtypes.h"
- #include "hxwintyp.h"
- #include "hxcom.h"
- #include "hxstring.h"
- #include <stdarg.h> /* for va_arg */
- /*
- * forward decls
- */
- typedef _INTERFACE IHXBuffer IHXBuffer;
- typedef _INTERFACE IHXValues IHXValues;
- /*
- * packing/unpacking functions
- * NOTE: this are Nick Hart's original methods imported
- * directly from chinembed/unix/bufferutils.cpp
- */
- HX_RESULT PackBuffer(REF(IHXBuffer*) pBuffer,
- const char* pFormat,
- ...);
- HX_RESULT PackBufferV(REF(IHXBuffer*) pBuffer,
- const char* pFormat,
- va_list vargs);
- int UnpackBuffer(REF(const char*) pBuffer,
- const char* pFormat,
- ...);
- int UnpackBufferV(REF(const char*) pBuffer,
- const char* pFormat,
- va_list vargs);
- HX_RESULT PackValues(REF(CHXString) sBuffer,
- IHXValues* pValues);
- HX_RESULT UnpackValues(REF(const char*) pBuffer,
- REF(IHXValues*) pValues,
- BOOL bCreateValues = TRUE);
- HX_RESULT Bufferize(REF(IHXBuffer*) pBuffer,
- void* pData,
- UINT32 uSize);
- #ifdef _DEBUG
- void TestBufferPacking();
- #endif
- /*
- * NOTE: these are methods Eric Hyche added specifically
- * for packing and unpacking IHXValues. They also add two
- * additional options:
- * a) binary packing (as opposed to Nick's text string packing); and
- * b) if you pass in an IUnknown context, then all your IHXBuffer's
- * and IHXValues will be created by the common class factory.
- * If you leave out the IUnknown, then IHXBuffer's will be
- * directly created from CHXBuffer's and IHXValues will be created
- * directly from CHXHeader's.
- */
- // GetBinaryPackedSize() returns the number of
- // bytes required to binary pack the IHXValues
- // that you pass in
- UINT32 GetBinaryPackedSize(IHXValues* pValues);
- // PackValuesBinary() packs the IHXValues you provide
- // in the IHXBuffer you provide in binary form. It assumes
- // that pBuffer is at least as big as the the
- // number of bytes returned by GetBinaryPackedSize(). If
- // pBuffer is not big enough, it will return HXR_FAIL.
- HX_RESULT PackValuesBinary(IHXBuffer* pBuffer,
- IHXValues* pValues);
- // CreateBuffer() creates an IHXBuffer. If you pass in
- // an IUnknown context, it will QI that context for
- // IHXCommonClassFactory and use IHXCommonClassFactory::CreateInstance()
- // to create the IHXBuffer. If you don't pass in an IUnknown context, then
- // it will do a "new CHXBuffer()" to create the IHXBuffer.
- HX_RESULT CreateBuffer(REF(IHXBuffer*) rpBuffer,
- IUnknown* pContext = NULL);
- // CreateValues() creates an IHXValues. If you pass in
- // an IUnknown context, it will QI that context for
- // IHXCommonClassFactory and use IHXCommonClassFactory::CreateInstance()
- // to create the IHXValues. If you don't pass in an IUnknown context, then
- // it will do a "new CHXHeader()" to create the IHXValues.
- HX_RESULT CreateValues(REF(IHXValues*) rpValues,
- IUnknown* pContext = NULL);
- // CreateStringBuffer() creates an IHXBuffer with the
- // string pszStr in it. The length of rpBuffer will
- // be strlen(pszStr) + 1. CreateStringBuffer() calls
- // CreateBuffer() to create the IHXBuffer.
- HX_RESULT CreateStringBuffer(REF(IHXBuffer*) rpBuffer,
- const char* pszStr,
- IUnknown* pContext = NULL);
- // SetCStringProperty() sets a CString property in
- // pValues where pszName is the property name
- // and the property value is pszValue. SetCStringProperty()
- // calls CreateStringBuffer() to create the IHXBuffer
- // which holds the property value string.
- HX_RESULT SetCStringProperty(IHXValues* pValues,
- const char* pszName,
- const char* pszValue,
- IUnknown* pContext = NULL,
- BOOL bSetAsBufferProp = FALSE);
- // SetCStringPropertyWithNullTerm() sets a CString property in
- // pValues where pszName is the property name
- // and the property value is in pBuf and ulLen. It's assumed
- // that pBuf and ulLen hold a string, but the string is
- // not NULL-terminated. Therefore, SetCStringPropertyWithNT()
- // will NULL-terminate the buffer in pBuf (making the
- // IHXBuffer it creates ulLen + 1).
- HX_RESULT SetCStringPropertyWithNullTerm(IHXValues* pValues,
- const char* pszName,
- BYTE* pBuf,
- UINT32 ulLen,
- IUnknown* pContext = NULL,
- BOOL bSetAsBufferProp = FALSE);
- // CreateNullTermBuffer takes pBuf and ulLen, creates a
- // buffer of length ulLen+1, copies ulLen bytes
- // of pBuf into this new buffer, and then NULL-terminates
- // it. It then returns this buffer as an out parameter.
- HX_RESULT CreateNullTermBuffer(BYTE* pBuf,
- UINT32 ulLen,
- char** ppNTBuf);
- // SetBufferPropety() sets a Buffer property in pValues.
- // First calls CreateBuffer() (see above) to create the
- // IHXBuffer, then calls IHXBuffer::Set() with the
- // provided pBuf and ulLen, and then sets this
- // property into the IHXValues.
- HX_RESULT SetBufferProperty(IHXValues* pValues,
- const char* pszName,
- BYTE* pBuf,
- UINT32 ulLen,
- IUnknown* pContext = NULL);
- // UnpackPropertyULONG32() unpacks a ULONG32 property
- // from binary form, and then sets that ULONG32 property
- // into the provided IHXValues. Initially rpBuf should
- // be set to the beginning of the packed ULONG32 and
- // pLimit should be set to the end of the entire packing
- // buffer (this provides protection against corrupt data
- // buffer overruns). Upon return, rpBuf will be set to
- // the first byte past the end of the packed ULONG32.
- // UnpackPropertyULONG32() is called by UnpackValuesBinary().
- HX_RESULT UnpackPropertyULONG32(IHXValues* pValues,
- REF(BYTE*) rpBuf,
- BYTE* pLimit,
- IUnknown* pContext = NULL);
- // UnpackPropertyCString() unpacks a CString property
- // from binary form, and then sets that CString property
- // into the provided IHXValues. Initially rpBuf should
- // be set to the beginning of the packed CString and
- // pLimit should be set to the end of the entire packing
- // buffer (this provides protection against corrupt data
- // buffer overruns). Upon return, rpBuf will be set to
- // the first byte past the end of the packed CString.
- // UnpackPropertyCString() is called by UnpackValuesBinary().
- HX_RESULT UnpackPropertyCString(IHXValues* pValues,
- REF(BYTE*) rpBuf,
- BYTE* pLimit,
- IUnknown* pContext = NULL);
- // UnpackPropertyBuffer() unpacks a Buffer property
- // from binary form, and then sets that Buffer property
- // into the provided IHXValues. Initially rpBuf should
- // be set to the beginning of the packed CString and
- // pLimit should be set to the end of the entire packing
- // buffer (this provides protection against corrupt data
- // buffer overruns). Upon return, rpBuf will be set to
- // the first byte past the end of the packed Buffer.
- // UnpackPropertyBuffer() is called by UnpackValuesBinary().
- HX_RESULT UnpackPropertyBuffer(IHXValues* pValues,
- REF(BYTE*) rpBuf,
- BYTE* pLimit,
- IUnknown* pContext = NULL);
- // UnpackValuesBinary() unpacks a binary-packed pBuffer into
- // the provided pValues. If pBuffer is not binary-packed, then
- // it will return HXR_FAIL. If you pass in an IUnknown context,
- // then it will use the common class factory to create the
- // necessary IHXBuffer's. Otherwise, it will use "new CHXBuffer()".
- HX_RESULT UnpackValuesBinary(IHXValues* pValues,
- IHXBuffer* pBuffer,
- IUnknown* pContext = NULL);
- // UnpackValuesBinary() unpacks a binary-packed pBuffer into
- // the provided pValues. If pBuffer is not binary-packed, then
- // it will return HXR_FAIL. If you pass in an IUnknown context,
- // then it will use the common class factory to create the
- // necessary IHXBuffer's. Otherwise, it will use "new CHXBuffer()".
- HX_RESULT UnpackValuesBinary(IHXValues* pValues,
- BYTE* pBuf,
- UINT32 ulLen,
- IUnknown* pContext = NULL);
- // PackValues() packs pValues into an IHXBuffer and returns
- // the packed buffer into rpBuffer. If bPackBinary is TRUE,
- // it will pack the IHXValues as binary; otherwise, it
- // will pack the IHXValues as text. If you pass in an IUnknown context,
- // then it will use the common class factory to create the
- // necessary IHXBuffer's. Otherwise, it will use "new CHXBuffer()".
- HX_RESULT PackValues(REF(IHXBuffer*) rpBuffer,
- IHXValues* pValues,
- BOOL bPackBinary = FALSE,
- IUnknown* pContext = NULL);
- // UnpackValues() unpacks an IHXBuffer into rpValues. It
- // automatically detects whether pBuffer is binary-packed
- // or text-packed (as long as PackValues() was used to pack
- // the IHXValues).
- HX_RESULT UnpackValues(REF(IHXValues*) rpValues,
- IHXBuffer* pBuffer,
- IUnknown* pContext = NULL);
- // UnpackValues() unpacks an IHXBuffer into rpValues. It
- // automatically detects whether pBuffer is binary-packed
- // or text-packed (as long as PackValues() was used to pack
- // the IHXValues).
- HX_RESULT UnpackValues(REF(IHXValues*) rpValues,
- BYTE* pBuf,
- UINT32 ulLen,
- IUnknown* pContext = NULL);
- // AreValuesInclusiveIdentical() checks whether all the
- // properties in pValues1 are:
- // a) in pValues2; AND
- // b) identical to the corresponding properties in pValues2.
- BOOL AreValuesInclusiveIdentical(IHXValues* pValues1,
- IHXValues* pValues2);
- // AreValuesIdentical() returns
- // AreValuesInclusiveIdentical(pValues1, pValues2) &&
- // AreValuesInclusiveIdentical(pValues1, pValues2).
- // By checking inclusive identity in both directions, this
- // absolutely establishes identity between the contents
- // of pValues1 and pValues2.
- BOOL AreValuesIdentical(IHXValues* pValues1,
- IHXValues* pValues2);
- #ifdef _DEBUG
- // This tests text and binary packing of IHXValues.
- // It is also a good place to look for examples of how
- // to call PackValues() and UnpackValues().
- HX_RESULT TestValuesPacking(IUnknown* pContext = NULL);
- #endif
- #endif