RFile.h
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上传日期:2013-08-04
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- /*
- * Copyright (c) 2001,2002,2003 Mike Matsnev. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice immediately at the beginning of the file, without modification,
- * this list of conditions, and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Absolutely no warranty of function or purpose is made by the author
- * Mike Matsnev.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $Id: RFile.h,v 1.11.2.4 2005/06/18 16:29:27 mike Exp $
- *
- */
- #if !defined(AFX_RFILE_H__3965961A_8172_4D80_990B_CC46A6EE9D62__INCLUDED_)
- #define AFX_RFILE_H__3965961A_8172_4D80_990B_CC46A6EE9D62__INCLUDED_
- #if _MSC_VER > 1000
- #pragma once
- #endif // _MSC_VER > 1000
- // block oriented file i/o
- class RFile
- {
- public:
- static int BSZ,BMASK; // block size, must be a power of two
- RFile(const CString& filename) : m_fh(INVALID_HANDLE_VALUE),
- m_fn(filename), m_didreopen(false), m_diderror(false),
- m_ptr(0) { }
- virtual ~RFile() {
- if (m_fh != INVALID_HANDLE_VALUE)
- CloseHandle(m_fh);
- }
- // generic file operations
- virtual DWORD size();
- virtual DWORD read(void *buf);
- virtual void seek(DWORD pos);
- // compression
- virtual CString CompressionInfo() { return _T("None"); }
- // buffer size setting
- static void InitBufSize();
- // RFile helpers
- bool Reopen();
- void ShowError();
- DWORD read2(void *buf,DWORD size);
- protected:
- HANDLE m_fh;
- CString m_fn;
- DWORD m_ptr;
- bool m_didreopen;
- bool m_diderror;
- void seek2(DWORD where,DWORD how);
- DWORD pos();
- };
- // I/O error messages
- CString FileExceptionInfo(const CString& filename,DWORD dwError);
- CString FileName(const CString& file);
- #endif // !defined(AFX_RFILE_H__3965961A_8172_4D80_990B_CC46A6EE9D62__INCLUDED_)