98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
/* -*- C++ -*- */
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/*
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* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __CHARSTREAM_H__
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#define __CHARSTREAM_H__
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#include <Windows.h>
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struct bufNode {
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unsigned char *buf;
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unsigned int bufSize;
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};
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typedef struct bufNode bufNode;
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class CharStream {
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public:
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void CopyStream(CharStream* copy);
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BOOL AreThereMore(void);
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CharStream(unsigned int vecSize = 4);
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~CharStream(void);
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void PutChars(unsigned char *data, unsigned int size);
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BOOL GetChar(unsigned char *c);
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void UngetChar(void);
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void MarkAsRead(void);
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void RestoreToMark(void);
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BOOL SkipTo (unsigned char c, unsigned char **data, unsigned int *size);
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BOOL GetBuffer(unsigned char **buf, unsigned int *size);
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inline BOOL CharExist()
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{
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return
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((firstBuf >= 0) &&
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( ((firstBuf <= currBuf) &&
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(currBuf <= lastBuf) &&
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(firstBuf <= lastBuf)) ||
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((currBuf <= firstBuf) &&
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(currBuf <= lastBuf) &&
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(lastBuf < firstBuf)) ||
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((currBuf >= firstBuf) &&
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(currBuf >= lastBuf) &&
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(lastBuf < firstBuf))));
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}
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BOOL bufVecFull;
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private:
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BOOL AllocBufVec(unsigned __int64 VecSize);
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BOOL mThereAreMore;
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bufNode *bufVec;
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unsigned int bufVecSize;
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int currBuf, markBuf, firstBuf, lastBuf;
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int currBufIndex, markBufIndex;
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inline void reset(void)
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{
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bufVecFull = FALSE;
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firstBuf = lastBuf = -1;
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currBuf = markBuf = 0;
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currBufIndex = markBufIndex = 0;
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mThereAreMore = FALSE;
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};
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};
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#endif /* __CHARSTREAM_H__ */
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