poutfilter.cxx

来自「使用stl技术,(还没看,是听说的)」· CXX 代码 · 共 79 行

/*
 *
 *  C++ Portable Types Library (PTypes)
 *  Version 1.8.3  Released 25-Aug-2003
 *
 *  Copyright (c) 2001, 2002, 2003 Hovik Melikyan
 *
 *  http://www.melikyan.com/ptypes/
 *  http://ptypes.sourceforge.net/
 *
 */

#include <string.h>

#include "pstreams.h"


PTYPES_BEGIN


outfilter::outfilter(outstm* istm, int ibufsize)
: outstm(false, ibufsize), stm(istm)
{
    if (stm != nil)
        stm->addnotification(this);
}


outfilter::~outfilter()
{
    if (stm != nil)
        stm->delnotification(this);
}


void outfilter::freenotify(component* sender) 
{
    if (sender == stm) 
    {
        stm = nil;
        close();
    }
}


void outfilter::doopen() 
{
    if (stm != nil && !stm->get_active())
        stm->open();
}


void outfilter::doclose() 
{
}


string outfilter::get_errstmname() 
{
    if (stm == nil)
        return get_streamname();
    else
        return get_streamname() + ": " + stm->get_errstmname();
}


void outfilter::set_stm(outstm* istm) 
{
    close();
    if (stm != nil)
        stm->delnotification(this);
    stm = istm;
    if (stm != nil)
        stm->addnotification(this);
}


PTYPES_END