include/wvbackslash.h

/* -*- Mode: C++ -*-
 * Worldvisions Weaver Software:
 *   Copyright (C) 2002 Net Integration Technologies, Inc.
 *
 * C-style backslash escaping and unescaping of strings.
 */
#ifndef __WVBACKSLASH_H
#define __WVBACKSLASH_H
 
#include "wvencoder.h"

class WvBackslashEncoder : public WvEncoder
{
    WvString nasties;
 
public:
    WvBackslashEncoder(WvStringParm _nasties = "\\\"");
    virtual ~WvBackslashEncoder() { }
 
protected:
    virtual bool _encode(WvBuf &inbuf, WvBuf &outbuf, bool flush);
    virtual bool _reset();
};
 

class WvBackslashDecoder : public WvEncoder
{
    enum State
        { Initial, Escape, Hex1, Hex2, Octal1, Octal2, Octal3 };
    State state;
    WvInPlaceBuf tmpbuf;
    int value;
 
public:
    WvBackslashDecoder();
    virtual ~WvBackslashDecoder() { }
 
protected:
    virtual bool _encode(WvBuf &inbuf, WvBuf &outbuf, bool flush);
    virtual bool _reset();
 
private:
    bool flushtmpbuf(WvBuf &outbuf);
};
 
#endif // __WVBACKSLASH_H