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CountingStream.cpp

//
// CountingStream.cpp
//
// $Id: //poco/1.4/Foundation/src/CountingStream.cpp#1 $
//
// Library: Foundation
// Package: Streams
// Module:  CountingStream
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/CountingStream.h"


namespace Poco {


CountingStreamBuf::CountingStreamBuf(): 
      _pIstr(0), 
      _pOstr(0), 
      _chars(0), 
      _lines(0), 
      _pos(0)
{
}


00053 CountingStreamBuf::CountingStreamBuf(std::istream& istr): 
      _pIstr(&istr), 
      _pOstr(0), 
      _chars(0), 
      _lines(0), 
      _pos(0)
{
}


00063 CountingStreamBuf::CountingStreamBuf(std::ostream& ostr): 
      _pIstr(0), 
      _pOstr(&ostr), 
      _chars(0), 
      _lines(0), 
      _pos(0)
{
}


00073 CountingStreamBuf::~CountingStreamBuf()
{
}


00078 int CountingStreamBuf::readFromDevice()
{
      if (_pIstr)
      {
            int c = _pIstr->get();
            if (c != -1)
            {
                  ++_chars;
                  if (_pos++ == 0) ++_lines;
                  if (c == '\n') _pos = 0;
            }
            return c;
      }
      return -1;
}


int CountingStreamBuf::writeToDevice(char c)
{
      ++_chars;
      if (_pos++ == 0) ++_lines;
      if (c == '\n') _pos = 0;
      if (_pOstr) _pOstr->put(c);
      return charToInt(c);
}


00105 void CountingStreamBuf::reset()
{
      _chars = 0;
      _lines = 0;
      _pos   = 0;
}


00113 void CountingStreamBuf::setCurrentLineNumber(int line)
{
      _lines = line;
}


CountingIOS::CountingIOS()
{
      poco_ios_init(&_buf);
}


00125 CountingIOS::CountingIOS(std::istream& istr): _buf(istr)
{
      poco_ios_init(&_buf);
}


00131 CountingIOS::CountingIOS(std::ostream& ostr): _buf(ostr)
{
      poco_ios_init(&_buf);
}


00137 CountingIOS::~CountingIOS()
{
}


00142 void CountingIOS::reset()
{
      _buf.reset();
}


00148 void CountingIOS::setCurrentLineNumber(int line)
{
      _buf.setCurrentLineNumber(line);
}


00154 CountingStreamBuf* CountingIOS::rdbuf()
{
      return &_buf;
}


CountingInputStream::CountingInputStream(std::istream& istr): CountingIOS(istr), std::istream(&_buf)
{
}


00165 CountingInputStream::~CountingInputStream()
{
}


CountingOutputStream::CountingOutputStream(): std::ostream(&_buf)
{
}


00175 CountingOutputStream::CountingOutputStream(std::ostream& ostr): CountingIOS(ostr), std::ostream(&_buf)
{
}


00180 CountingOutputStream::~CountingOutputStream()
{
}


} // namespace Poco

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