opwavehxdataf.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: opwavehxdataf.h,v 1.1.32.3 2004/07/09 01:44:33 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 _OPENWAVE_HXDATA_FILE_H_
- #define _OPENWAVE_HXDATA_FILE_H_
- #include "hxtypes.h"
- #include "hxcom.h"
- #include "hxdataf.h"
- class OpenwaveHXDataFile : public IHXDataFile {
- public:
-
- OpenwaveHXDataFile(IUnknown** ppCommonObj = NULL);
- virtual ~OpenwaveHXDataFile();
- /*
- * IUnknown methods
- */
- STDMETHOD(QueryInterface) (THIS_
- REFIID riid,
- void** ppvObj);
-
- STDMETHOD_(ULONG32, AddRef) (THIS);
-
- STDMETHOD_(ULONG32, Release) (THIS);
-
- /*
- * IHXDataFile methods
- */
- /* Bind DataFile Object with FileName */
- STDMETHOD_(void, Bind) (THIS_
- const char* FileName);
- /* Creates a datafile using the specified mode
- * uOpenMode --- File Open mode - HX_FILE_READ/HX_FILE_WRITE/HX_FILE_BINARY
- */
- STDMETHOD(Create) (THIS_
- UINT16 uOpenMode);
- /* Open will open a file with the specified mode
- */
- STDMETHOD(Open) (THIS_
- UINT16 uOpenMode);
- /* Close closes a file
- * If the reference count on the IHXDataFile object is greater than 1,
- * then the underlying file cannot be safely closed, so Close() becomes
- * a noop in that case. Close it only when the object is destroyed.
- * This would be safe, but could lead to a file descriptor leak.
- */
- STDMETHOD(Close) (THIS);
- /* Name returns the currently bound file name in FileName.
- * and returns TRUE, if the a name has been bound. Otherwise
- * FALSE is returned.
- */
- STDMETHOD_(BOOL, Name) (THIS_
- REF(IHXBuffer*) pFileName);
- /*
- * IsOpen returns TRUE if file is open. Otherwise FALSE.
- */
- STDMETHOD_(BOOL, IsOpen) (THIS);
- /* Seek moves the current file position to the offset from the
- * fromWhere specifier returns current position of file or -1 on
- * error.
- */
- STDMETHOD(Seek) (THIS_
- ULONG32 offset, UINT16 fromWhere);
- /* Tell returns the current file position in the file */
- STDMETHOD_(ULONG32, Tell) (THIS);
- /* Read reads up to count bytes of data into buf.
- * returns the number of bytes read, EOF, or -1 if the read failed
- */
- STDMETHOD_(ULONG32, Read) (THIS_
- REF(IHXBuffer*) pBuf,
- ULONG32 count);
- /* Write writes up to count bytes of data from buf.
- * returns the number of bytes written, or -1 if the write failed
- */
- STDMETHOD_(ULONG32, Write) (THIS_
- REF(IHXBuffer*) pBuf);
- /* Flush out the data in case of buffered I/O
- */
- STDMETHOD(Flush) (THIS);
- /*
- * Return info about the data file such as permissions, time of creation
- * size in bytes, etc.
- */
- STDMETHOD(Stat) (THIS_
- struct stat* buffer);
- /* Delete File */
- STDMETHOD(Delete) (THIS);
- /* Return the file descriptor */
- STDMETHOD_(INT16, GetFd) (THIS);
- /* GetLastError returns the platform specific file error */
- STDMETHOD(GetLastError) (THIS);
- /* GetLastError returns the platform specific file error in
- * string form.
- */
- STDMETHOD_(void, GetLastError) (THIS_
- REF(IHXBuffer*) err);
- protected:
- INT32 NewBuf(); // grab a new buffer
- INT32 FillBuf(); // fill buffer around current position
- INT32 FlushBuf(); // flush buffer
- void AllocBuf(); // allocate buffer
- void FreeBuf(); // free buffer
- // read data at given position
- INT32 Pread(void* buf, INT32 nbytes, ULONG32 off);
- // write data at given position
- INT32 Pwrite(const void* buf, INT32 nbytes, ULONG32 off);
- ULONG32 FlushSize(); // return flushed file size
- ULONG32 LogicalSize(); // return file size including unflushed data
- INT32 GetFileStat(struct stat* buf) const; // get file stat
- INT32 GetPageSize() const; // get page size from system
- private:
- // don't implement these
- OpenwaveHXDataFile(const OpenwaveHXDataFile&);
- OpenwaveHXDataFile& operator=(const OpenwaveHXDataFile&);
- UINT32 m_ulPos;
- LONG32 m_lRefCount; // reference count
- UINT32 m_LastError; // error from last operation
- IHXBuffer* m_pFileName; // file name
- int m_Fd; // file descriptor
- UINT16 m_Flags; // open flags
- ULONG32 m_Begin; // beginning of buffer
- UINT32 m_BufSize; // buffer size
- UINT32 m_BufFill; // bytes in buffer from last fill
- ULONG32 m_Offset; // current seek offset
- ULONG32 m_FileOffset; // current seek offset in file
- ULONG32 m_FlushSize; // current flushed size of file
- char* m_pBuf; // buffer
- UINT32 m_Dirty; // buffer has been written over
- };
- #endif /* _OPENWAVE_HXDATA_FILE_H_ */