BufFile.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: BufFile.h,v 1.19.2.1 2003/04/12 22:52:32 mike Exp $
- *
- */
- #if !defined(AFX_BUFFILE_H__867464A4_888C_4590_A2F7_7126AC072CB6__INCLUDED_)
- #define AFX_BUFFILE_H__867464A4_888C_4590_A2F7_7126AC072CB6__INCLUDED_
- #if _MSC_VER > 1000
- #pragma once
- #endif // _MSC_VER > 1000
- #include "RFile.h"
- #define BEOF (-1)
- class CBufFile
- {
- public:
- CBufFile(kilo::auto_ptr<RFile> file);
- ~CBufFile() { }
- int ch() { return m_ptr<m_cur->len ? m_cur->buf[m_ptr++] : nextbuf_ch(); }
- int read(void *buf,int count); // read plain chars
- DWORD pos() { return m_cur->off+m_ptr; }
- void seek(DWORD pos);
- DWORD size() { return m_fp->size(); }
- DWORD prevpos() { return m_cur->off+m_ptr-1; }
- CString CompressionInfo() { return m_fp->CompressionInfo(); }
- protected:
- int nextbuf_ch();
- void swapbuf();
- struct Buf {
- Buffer<BYTE> buf;
- DWORD off;
- DWORD len;
- Buf() : buf(RFile::BSZ),off(0),len(0) { }
- };
- kilo::auto_ptr<RFile> m_fp;
-
- DWORD m_ptr;
- Buf m_b1,m_b2;
- Buf *m_cur;
- };
- #endif // !defined(AFX_BUFFILE_H__867464A4_888C_4590_A2F7_7126AC072CB6__INCLUDED_)