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// license:BSD-3-Clause
// copyright-holders:F.Ulivi
/***************************************************************************
dipty.h
Device PTY interface
***************************************************************************/
#include "emu.h"
#include "osdcore.h"
device_pty_interface::device_pty_interface(const machine_config &mconfig, device_t &device)
: device_interface(device, "pty")
, m_pty_master()
, m_slave_name()
, m_opened(false)
{
}
device_pty_interface::~device_pty_interface()
{
}
bool device_pty_interface::open()
{
if (!m_opened)
{
if (osd_file::openpty(m_pty_master, m_slave_name) == osd_file::error::NONE)
{
m_opened = true;
}
else
{
m_opened = false;
m_pty_master.reset();
}
}
return m_opened;
}
void device_pty_interface::close()
{
m_pty_master.reset();
m_opened = false;
}
bool device_pty_interface::is_open() const
{
return m_opened;
}
ssize_t device_pty_interface::read(uint8_t *rx_chars , size_t count) const
{
std::uint32_t actual_bytes;
if (m_opened && m_pty_master->read(rx_chars, 0, count, actual_bytes) == osd_file::error::NONE)
return actual_bytes;
else
return -1;
}
void device_pty_interface::write(uint8_t tx_char) const
{
std::uint32_t actual_bytes;
if (m_opened)
m_pty_master->write(&tx_char, 0, 1, actual_bytes);
}
bool device_pty_interface::is_slave_connected() const
{
// TODO: really check for slave status
return m_opened;
}
const char *device_pty_interface::slave_name() const
{
return m_slave_name.c_str();
}
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