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/* DSTART */
/* */
/* maildrop - mail delivery agent with filtering abilities */
/* */
/* Copyright 1998, Double Precision Inc. */
/* */
/* This program is distributed under the terms of the GNU General Public */
/* License. See COPYING for additional information. */
/* DEND */
#ifndef rematch_h
#define rematch_h
static const char rematch_h_rcsid[]="$Id: rematch.h 1.1 1998/04/17 00:08:53 mrsam Exp $";
#include <sys/types.h>
// #include <unistd.h>
#include "autoconf.h"
////////////////////////////////////////////////////////////////////////////
//
// ReMatch is an abstract class used in matching text against regular
// expression. The matched text may come from a memory buffer, or a file.
// The matching logic does not care, and uses an abstracted data source,
// represented by this class, which supplies the text being matched,
// character by character.
//
// Also, in order to support the '!' operator, GetCurrentPos() and
// SetCurrentPos() functions must be implemented as a rudimentary "seek"
// mechanism.
//
////////////////////////////////////////////////////////////////////////////
class ReMatch {
public:
ReMatch() {}
virtual ~ReMatch();
virtual int NextChar()=0;
virtual int CurrentChar()=0;
virtual off_t GetCurrentPos()=0;
virtual void SetCurrentPos(off_t)=0;
} ;
#endif
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