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/***************************************************************************
koctalbytecodec.cpp - description
-------------------
begin : Mo Nov 29 2004
copyright : (C) 2004 by Friedrich W. H. Kossebau
email : Friedrich.W.H@Kossebau.de
***************************************************************************/
/***************************************************************************
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License version 2 as published by the Free Software Foundation. *
* *
***************************************************************************/
// lib specific
#include "koctalbytecodec.h"
using namespace KHE;
void KOctalByteCodec::encode( TQString &Digits, unsigned int Pos, unsigned char Char ) const
{
Digits.at(Pos++) = '0'+(Char>>6);
Digits.at(Pos++) = '0'+((Char>>3)&0x07);
Digits.at(Pos) = '0'+((Char) &0x07);
}
void KOctalByteCodec::encodeShort( TQString &Digits, unsigned int Pos, unsigned char Char ) const
{
unsigned char C;
if( (C = (Char>>6)&0x07) )
Digits.at(Pos++) = '0'+C;
if( (C = (Char>>3)&0x07) )
Digits.at(Pos++) = '0'+C;
Digits.at(Pos) = '0'+((Char)&0x07);
}
bool KOctalByteCodec::isValidDigit( unsigned char Digit ) const
{
return Digit >= '0' && Digit <= '7';
}
bool KOctalByteCodec::turnToValue( unsigned char *Digit ) const
{
if( isValidDigit(*Digit) )
{
*Digit -= '0';
return true;
}
return false;
}
bool KOctalByteCodec::appendDigit( unsigned char *Byte, unsigned char Digit ) const
{
if( turnToValue(&Digit) )
{
unsigned char B = *Byte;
if( B < 64 )
{
B <<= 3;
B += Digit;
*Byte = B;
return true;
}
}
return false;
}
void KOctalByteCodec::removeLastDigit( unsigned char *Byte ) const
{
*Byte >>= 3;
}
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