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//
// HexBinaryDecoder.cpp
//
// Library: Foundation
// Package: Streams
// Module: HexBinary
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/HexBinaryDecoder.h"
#include "Poco/Exception.h"
namespace Poco {
HexBinaryDecoderBuf::HexBinaryDecoderBuf(std::istream& istr):
_buf(*istr.rdbuf())
{
}
HexBinaryDecoderBuf::~HexBinaryDecoderBuf()
{
}
int HexBinaryDecoderBuf::readFromDevice()
{
int c;
int n;
if ((n = readOne()) == -1) return -1;
if (n >= '0' && n <= '9')
c = n - '0';
else if (n >= 'A' && n <= 'F')
c = n - 'A' + 10;
else if (n >= 'a' && n <= 'f')
c = n - 'a' + 10;
else throw DataFormatException();
c <<= 4;
if ((n = readOne()) == -1) throw DataFormatException();
if (n >= '0' && n <= '9')
c |= n - '0';
else if (n >= 'A' && n <= 'F')
c |= n - 'A' + 10;
else if (n >= 'a' && n <= 'f')
c |= n - 'a' + 10;
else throw DataFormatException();
return c;
}
int HexBinaryDecoderBuf::readOne()
{
int ch = _buf.sbumpc();
while (ch == ' ' || ch == '\r' || ch == '\t' || ch == '\n')
ch = _buf.sbumpc();
return ch;
}
HexBinaryDecoderIOS::HexBinaryDecoderIOS(std::istream& istr): _buf(istr)
{
poco_ios_init(&_buf);
}
HexBinaryDecoderIOS::~HexBinaryDecoderIOS()
{
}
HexBinaryDecoderBuf* HexBinaryDecoderIOS::rdbuf()
{
return &_buf;
}
HexBinaryDecoder::HexBinaryDecoder(std::istream& istr): HexBinaryDecoderIOS(istr), std::istream(&_buf)
{
}
HexBinaryDecoder::~HexBinaryDecoder()
{
}
} // namespace Poco
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