cmacfile.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 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
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (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.
- *
- * 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 __CMACFILE__
- #define __CMACFILE__
- #include "CHXDATAF.H"
- #include "CBufferFile.h" // for asynchronous buffered file reads
- #include "CWriteFile.h" // for asynchronous buffered file writes
- // VERY IMPORTANT NOTE: All char *filename must be typecast to
- // FSSpecPtr before using. All callers must also typecast FSSpecPtr
- // to char *
- /*enum
- {
- SEEK_SET = 0,
- SEEK_CUR,
- SEEK_END
- };*/
- class CMacFile : public CHXDataFile {
- public:
- CMacFile (void);
- ~CMacFile (void);
- static OSType sFileType;
- static OSType sCreator;
- /* GetLastError returns the platform specific file error */
- virtual HX_RESULT GetLastError (void) {return mLastError;};
- virtual BOOL GetTemporaryFileName(const char *tag, char* name, UINT32 ulBufLen);
-
- /* Create creates a file using the specified mode */
- virtual HX_RESULT Create (const char *filename, UINT16 mode, BOOL textflag= 0);
- /* Open will open a file with the specified permissions
- *
- * If the file with the given path isn't found, it looks for
- * a kRealFileResource resource with the same name (file name,
- * not path name).
- */
- virtual HX_RESULT Open (const char *filename, UINT16 mode, BOOL textflag = 0);
- /* Close closes a file */
- virtual HX_RESULT Close (void);
-
- /* Seek moves the current file position to the offset from the fromWhere specifier */
- virtual HX_RESULT Seek (ULONG32 offset, UINT16 fromWhere);
- /* Returns the size of the file in bytes. */
- virtual ULONG32 GetSize(void);
- /* Tell returns the current file position in the file */
- virtual ULONG32 Tell(void);
- /* Rewind sets the current file position to the start of the file */
- virtual HX_RESULT Rewind(void);
- /* Read reads up to count bytes of data into buf.
- returns the number of bytes read, EOF, or -1 if the read failed */
- virtual ULONG32 Read(char *buf, ULONG32 count);
- /* This read function is used in the pnlib implementation*/
- INT16 Read(char *buf, INT32 count, INT32 *actualCount);
- /* Write writes up to count bytes of data from buf.
- returns the number of bytes written, or -1 if the write failed */
- virtual UINT32 Write(const char *buf, ULONG32 count);
- /* This write function is used in the pnlib implementation*/
- INT16 Write(const char *buf, INT32 count, INT32 *actualCount);
- #ifndef _CARBON
- static OSErr FSOpenFile (FSSpec *theSpec,
- short perm,
- short *fRefNum);
- static OSErr FSCreateDataFile (FSSpec *sfFile,
- OSType creator,
- OSType type);
- static OSErr FSSetFInfo (FSSpec *theSpec,
- OSType creator,
- OSType type);
- static OSErr FSSetEOF (short fRefNum,
- long size);
-
-
- static OSErr FSSetFilePos (short fRefNum,
- short fromWhere,
- long offset);
- #endif
- static void SetFileType (OSType creator,
- OSType type);
-
- virtual HX_RESULT set_buffered_read (char buffered);
- virtual HX_RESULT set_buffered_write (char buffered);
-
- /* Return the file descriptor */
-
- virtual INT16 GetFd(void) { return mRefNum; };
- /* Delete deletes a file */
- virtual HX_RESULT Delete (const char *filename);
- INT16 FileSize (long *size);
- Boolean BufferedWrite(void) { return mBufferedWrite; }
- protected:
- long Copy (Ptr destBuf, long numBytes);
- #ifdef _CARBON
- FSRef mFile;
- #else
- FSSpec mFile;
- #endif
- short mRefNum; // file refnum (-1 if not open)
-
- Boolean mAppendMode;
-
- Boolean mBufferedRead; // async buffered read enabled flag
- Boolean mBufferedWrite; // async buffered write enabled flag
- CBufferFile *mBufferFile; // buffered read object
- CWriteFile *mWriteFile; // buffered write object
-
- UINT16 m_mode; // mode that the file was opened with.
- // pseudo-file support
- //
- // mRefNum is -1 when we're using a pseudo-file, and
- // m_pseudoFileHandle is non-nil
- //
- // m_pseudoFileHandle is a handle to a resource that is not loaded
- // into memory, since we'll use ReadPartialResource to read it
- // directly from disk
-
- Handle m_pseudoFileHandle; // if non-nil, our resource handle
- SInt32 m_pseudoFileSize; // size of the handle
- SInt32 m_pseudoFileOffset; // pseudo-file pointer (0..m_pseudoFileSize-1)
- };
-
- #define kRealFileResource 'RLFL' // resource type for pseudo-file resources
- #endif