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file_db: support default data if file not present
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@ -5,9 +5,16 @@ from artiq.protocols.sync_struct import Notifier
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class FlatFileDB:
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def __init__(self, filename):
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def __init__(self, filename, default_data=None):
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self.filename = filename
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self.data = Notifier(pyon.load_file(self.filename))
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try:
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data = pyon.load_file(self.filename)
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except FileNotFoundError:
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if default_data is None:
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raise
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else:
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data = default_data
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self.data = Notifier(data)
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self.hooks = []
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def save(self):
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