char_stack.h
上传用户:dangjiwu
上传日期:2013-07-19
资源大小:42019k
文件大小:4k
- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: char_stack.h,v 1.1.1.1.50.3 2004/07/09 01:48:00 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 CHAR_STACK_H
- #define CHAR_STACK_H
- /*
- * CharStack :
- * This is a utility class to help with parsing tasks. It allows you
- * to accumulate characters into a buffer without having to worry about
- * buffer allocation issues.
- */
- class CharStack {
- public:
- CharStack(int buf_len = 64);
- ~CharStack();
- char& operator*();
- CharStack& operator++();
- void operator++(int);
- const char* Finish();
- int Length() const;
- void Reset();
- const char* StrSep(const char* str, const char* sep);
- private:
- CharStack(const CharStack&); // don't implement
- CharStack& operator=(const CharStack&);
- char* NewBuf();
- int m_Len;
- char* m_pBuf;
- char* m_pCur;
- };
- inline
- CharStack::CharStack(int buflen) :
- m_Len(buflen),
- m_pBuf(0),
- m_pCur(0)
- {
- NewBuf();
- }
- inline
- CharStack::~CharStack()
- {
- delete [] m_pBuf;
- m_pBuf = 0;
- m_Len = 0;
- m_pCur = 0;
- }
- inline
- char& CharStack::operator*()
- {
- return m_pCur - m_pBuf < m_Len ? *m_pCur : *NewBuf();
- }
- inline
- CharStack& CharStack::operator++()
- {
- ++m_pCur;
- return *this;
- }
- inline
- void CharStack::operator++(int)
- {
- m_pCur++;
- }
- inline
- int CharStack::Length() const
- {
- return m_pCur - m_pBuf;
- }
- inline
- void CharStack::Reset()
- {
- m_pCur = m_pBuf;
- }
- inline
- const char* CharStack::Finish()
- {
- if (m_pCur - m_pBuf >= m_Len)
- NewBuf();
- *m_pCur = 0;
- return m_pBuf;
- }
- #endif /* CHAR_STACK_H */