mimescan.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 ***** */
- /*
- * Tokenizer and buffered input classes to scan MIME messages
- */
- #ifndef _MIMESCAN_H_
- #define _MIMESCAN_H_
- #include <ctype.h>
- #include "hxstring.h"
- class MIMEInputStream
- {
- public:
- MIMEInputStream(const char* pBuf, UINT32 nBufLen);
- MIMEInputStream(const CHXString& str);
- ~MIMEInputStream();
- int read();
- int peek();
- int read(char* pBuf, UINT32 nBufLen);
- UINT32 available();
- UINT32 offset() { return (!m_bUndoValid) ? m_nCurOffset : m_nCurOffset-1; }
- UINT32 length() { return m_nBufSize; }
- void putBack(int ch)
- {
- // If somone tries to push back a EOF ignore it..
- if(ch != -1)
- {
- m_bUndoValid = TRUE;
- m_nUndo = ch;
- }
- }
- UINT32 max_distance_to(char* p);
- private:
- char* m_pBuffer;
- UINT32 m_nBufSize;
- UINT32 m_nCurOffset;
- BOOL m_bUndoValid;
- int m_nUndo;
- };
- /*
- * Stores the token string and the last character for look-ahead
- */
- class MIMEToken
- {
- public:
- enum { T_EOF=-1, T_EOL='n' };
- MIMEToken():
- m_value(""),
- m_lastChar(-1)
- {}
- MIMEToken(const char* value, char lastChar):
- m_value(value),
- m_lastChar(lastChar)
- {}
- MIMEToken(char lastChar):
- m_value(""),
- m_lastChar(lastChar)
- {}
- const CHXString& value() { return m_value; }
- const signed char lastChar() { return m_lastChar; }
- int hasValue();
- private:
- CHXString m_value;
- int m_lastChar;
- };
- inline int
- MIMEToken::hasValue()
- {
- int b = 0;
- for(unsigned int i=0; i < m_value.GetLength(); i++)
- if(!isspace(m_value[i]))
- b = 1;
- return b;
- }
- class MIMEScanner
- {
- public:
- MIMEScanner(MIMEInputStream& input);
- ~MIMEScanner();
- MIMEToken nextToken(char* upTo = 0);
- UINT32 offset() { return m_input.offset(); }
- UINT32 length() { return m_input.length(); }
- private:
- void skipWS();
- CHXString m_tokstr;
- CHXString m_line;
- MIMEInputStream& m_input;
- };
- #endif /* _MIMESCAN_H_ */