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// -*- coding:unix; mode:c++; tab-width:4; c-basic-offset:4; indent-tabs-mode:nil -*-
#ifndef BYTE_IO_STREAM_H
#define BYTE_IO_STREAM_H
//#include "vnconv.h"
#include <stdio.h>
typedef unsigned char UKBYTE;
typedef unsigned short UKWORD;
typedef unsigned int UKDWORD;
//----------------------------------------------------
class ByteStream {
public:
virtual ~ByteStream(){};
};
//----------------------------------------------------
class ByteInStream: public ByteStream
{
public:
virtual int getNext(UKBYTE &b) = 0;
virtual int peekNext(UKBYTE &b) = 0;
virtual int unget(UKBYTE b) = 0;
virtual int getNextW(UKWORD &w) = 0;
virtual int peekNextW(UKWORD &w) = 0;
virtual int getNextDW(UKDWORD &dw) = 0;
virtual int bookmark() //no support for bookmark by default
{
return 0;
}
virtual int gotoBookmark()
{
return 0;
}
virtual int eos() = 0; //end of stream
virtual int close() = 0;
};
//----------------------------------------------------
class ByteOutStream: public ByteStream
{
public:
virtual int putB(UKBYTE b) = 0;
virtual int putW(UKWORD w) = 0;
virtual int puts(const char *s, int size = -1) = 0; // write an 8-bit string
virtual int isOK() = 0;// get current stream state
};
//----------------------------------------------------
class StringBIStream : public ByteInStream
{
protected:
int m_eos;
UKBYTE *m_data, *m_current;
int m_len, m_left;
struct {
int eos;
UKBYTE *data, *current;
int len, left;
} m_bookmark;
int m_didBookmark;
public:
StringBIStream(UKBYTE *data, int len, int elementSize = 1);
virtual int getNext(UKBYTE &b);
virtual int peekNext(UKBYTE &b);
virtual int unget(UKBYTE b);
virtual int getNextW(UKWORD &w);
virtual int peekNextW(UKWORD &w);
virtual int getNextDW(UKDWORD &dw);
virtual int eos(); //end of stream
virtual int close();
virtual int bookmark();
virtual int gotoBookmark();
void reopen();
int left() {
return m_left;
}
};
//----------------------------------------------------
class FileBIStream : public ByteInStream
{
protected:
FILE *m_file;
int m_bufSize;
char *m_buf;
int m_own;
int m_didBookmark;
struct {
long pos;
} m_bookmark;
//some systems don't have wide char IO functions
//we have to use this variables to implement that
UKBYTE m_readByte;
int m_readAhead;
int m_lastIsAhead;
public:
FileBIStream(int bufsize = 8192, char *buf = NULL);
// FileBIStream(char *fileName, int bufsize = 8192, void *buf = NULL);
int open(const char *fileName);
void attach(FILE *f);
virtual int close();
virtual int getNext(UKBYTE &b);
virtual int peekNext(UKBYTE &b);
virtual int unget(UKBYTE b);
virtual int getNextW(UKWORD &w);
virtual int peekNextW(UKWORD &w);
virtual int getNextDW(UKDWORD &dw);
virtual int eos(); //end of stream
virtual int bookmark();
virtual int gotoBookmark();
virtual ~FileBIStream();
};
//----------------------------------------------------
class StringBOStream : public ByteOutStream
{
protected:
UKBYTE *m_buf, *m_current;
int m_out;
int m_len;
int m_bad;
public:
StringBOStream(UKBYTE *buf, int len);
virtual int putB(UKBYTE b);
virtual int putW(UKWORD w);
virtual int puts(const char *s, int size = -1);
virtual int isOK(); // get current stream state
virtual int close()
{
return 1;
};
void reopen();
int getOutBytes() {
return m_out;
}
};
//----------------------------------------------------
class FileBOStream : public ByteOutStream
{
protected:
FILE *m_file;
int m_bufSize;
char *m_buf;
int m_own;
int m_bad;
public:
FileBOStream(int bufsize = 8192, char *buf = NULL);
// FileBOStream(char *fileName, int bufsize = 8192, void *buf = NULL);
int open(const char *fileName);
void attach(FILE *);
virtual int close();
virtual int putB(UKBYTE b);
virtual int putW(UKWORD w);
virtual int puts(const char *s, int size = -1);
virtual int isOK(); // get current stream state
virtual ~FileBOStream();
};
#endif
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