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https://git.rtems.org/rtems-tools/
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125 lines
3.7 KiB
Python
125 lines
3.7 KiB
Python
#
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# RTEMS Tools Project (http://www.rtems.org/)
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# Copyright 2013-2017 Chris Johns (chrisj@rtems.org)
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# All rights reserved.
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#
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# This file is part of the RTEMS Tools package in 'rtems-tools'.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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#
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# RTEMS Testing Consoles
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#
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import errno
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import os
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import sys
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import telnetlib
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import time
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from rtemstoolkit import error
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from rtemstoolkit import host
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from rtemstoolkit import path
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class tty:
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def __init__(self, dev):
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self.dev = dev
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self.timeout = 5
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self.conn = None
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ds = dev.split(':')
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self.host = ds[0]
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if len(ds) == 1:
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self.port = 23
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else:
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try:
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self.port = int(ds[1])
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except:
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raise error.general('invalid port: %s' % (dev))
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self.conn = telnetlib.Telnet()
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self._reopen()
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def __del__(self):
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if self.conn:
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try:
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self.conn.close()
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except:
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pass
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def __str__(self):
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s = 'host: %s port: %d' % ((self.host, self.port))
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return s
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def _reopen(self):
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if self.conn:
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self.conn.close()
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time.sleep(1)
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try:
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self.conn.open(self.host, self.port, self.timeout)
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except IOError as ioe:
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if self.conn:
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self.conn.close()
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raise error.general('opening telnet: %s:%d: %s' % (self.host,
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self.port,
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ioe))
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except:
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if self.conn:
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self.conn.close()
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raise error.general('opening telnet: %s:%d: unknown' % (self.host,
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self.port))
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def off(self):
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self.is_on = False
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def on(self):
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self.is_on = True
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def set(self, flags):
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pass
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def read(self):
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reopen = False
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try:
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data = self.conn.read_very_eager()
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except IOError as ioe:
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if ioe.errno == errno.ECONNREFUSED:
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reopen = True
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data = ''
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except EOFError as ose:
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reopen = True
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data = ''
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if reopen:
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self._reopen()
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return data
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if __name__ == "__main__":
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if len(sys.argv) == 2:
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import time
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t = tty(sys.argv[1])
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print(t)
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while True:
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time.sleep(0.05)
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c = t.read()
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sys.stdout.write(c)
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