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https://github.com/gnuradio/gnuradio-companion.git
synced 2025-12-11 22:18:02 -06:00
43e6a43e3d
All of the removed `from __future__ import` were needed in older versions of Python (mostly 2.5.x and below) but later became mandatory in most versions of Python 3 hence are not necessary anymore. More specifically, according to __future__.py[1]: - unicode_literals is part of Python since versions 2.6.0 and 3.0.0; - print_function is part of Python since versions 2.6.0 and 3.0.0; - absolute_import is part of Python since versions 2.5.0 and 3.0.0; - division is part of Python since versions 2.2.0 and 3.0.0; Get rid of those unnecessary imports to slightly clean up the codebase. [1] https://github.com/python/cpython/blob/master/Lib/__future__.py
75 lines
1.9 KiB
Python
75 lines
1.9 KiB
Python
"""
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Copyright 2015 Free Software Foundation, Inc.
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This file is part of GNU Radio
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SPDX-License-Identifier: GPL-2.0-or-later
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"""
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import os
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import sys
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import time
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import threading
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import tempfile
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import subprocess
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class ExternalEditor(threading.Thread):
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def __init__(self, editor, name, value, callback):
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threading.Thread.__init__(self)
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self.daemon = True
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self._stop_event = threading.Event()
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self.editor = editor
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self.callback = callback
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self.filename = self._create_tempfile(name, value)
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def _create_tempfile(self, name, value):
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with tempfile.NamedTemporaryFile(
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mode='wb', prefix=name + '_', suffix='.py', delete=False,
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) as fp:
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fp.write(value.encode('utf-8'))
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return fp.name
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def open_editor(self):
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proc = subprocess.Popen(args=(self.editor, self.filename))
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proc.poll()
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return proc
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def stop(self):
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self._stop_event.set()
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def run(self):
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filename = self.filename
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# print "file monitor: started for", filename
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last_change = os.path.getmtime(filename)
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try:
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while not self._stop_event.is_set():
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mtime = os.path.getmtime(filename)
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if mtime > last_change:
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# print "file monitor: reload trigger for", filename
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last_change = mtime
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with open(filename, 'rb') as fp:
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data = fp.read().decode('utf-8')
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self.callback(data)
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time.sleep(1)
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except Exception as e:
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print("file monitor crashed:", str(e), file=sys.stderr)
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finally:
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try:
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os.remove(self.filename)
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except OSError:
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pass
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if __name__ == '__main__':
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e = ExternalEditor('/usr/bin/gedit', "test", "content", print)
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e.open_editor()
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e.start()
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time.sleep(15)
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e.stop()
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e.join()
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