Пример #1
0
void callback(std::ios_base::event ev, std::ios_base& strm, int idx)
    {
    if (ev == std::ios_base::erase_event)
        {
        try
            {
            delete static_cast<NewFormat*>(strm.pword(idx));

            strm.pword(idx) = 0;
            }
        catch (...)
            { }
        }
    else if (ev == std::ios_base::copyfmt_event)
        {
        NewFormat* old(static_cast<NewFormat*>(strm.pword(idx)));

        if (old != 0)
            {
            try
                {
                strm.pword(idx) = new NewFormat(*old);
                }
            catch (std::bad_alloc&)
                { }
            }
        }
    }
Пример #2
0
void replace_pword(std::ios_base& iob, int idx, const T& x) {
    iob.register_callback(callback<NewFormat>, idx);

    NewFormat* new_format(new NewFormat(x));
    OldFormat* old_format(static_cast<OldFormat*>(iob.pword(idx)));
    iob.pword(idx) = new_format;
    delete old_format;
}
Пример #3
0
// Stream format gets copied or destroyed
static void my_ios_callback(std::ios_base::event ev, std::ios_base & s, int i)
{
	print_context *p = static_cast<print_context *>(s.pword(i));
	if (ev == std::ios_base::erase_event) {
		delete p;
		s.pword(i) = nullptr;
	} else if (ev == std::ios_base::copyfmt_event && p != nullptr)
		s.pword(i) = p->duplicate();
}
Пример #4
0
// Set print_context associated with stream, retain options
static void set_print_context(std::ios_base & s, const print_context & c)
{
	int i = my_ios_index();
	long flags = s.iword(i);
	if (!(flags & callback_registered)) {
		s.register_callback(my_ios_callback, i);
		s.iword(i) = flags | callback_registered;
	}
	print_context *p = static_cast<print_context *>(s.pword(i));
	unsigned options = p ? p->options : c.options;
	delete p;
	p = c.duplicate();
	p->options = options;
	s.pword(i) = p;
}
Пример #5
0
void cleanup(std::ios_base::event evt, std::ios_base& str, int idx)
{
    if (str.iword(separatorEnabled()) && evt == std::ios_base::erase_event)
    {
        void*& p = str.pword(idx);
        delete static_cast<std::string*>(p);
        str.iword(separatorEnabled()) = false; 
    }
}
Пример #6
0
void
TimeStreamFormater::setStreamInfo(std::ios_base & theStream) const {
    theStream.iword(ourIsFormatedFlagIndex) = true;
    theStream.pword(ourFormatStringIndex) = (void *) _myFormatString ;
}