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43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
# Copyright 2015 Adafruit Industries.
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# Author: Tony DiCola
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# License: GNU GPLv2, see LICENSE.txt
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import os.path
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class DirectoryReader(object):
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def __init__(self, config):
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"""Create an instance of a file reader that just reads a single
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directory on disk.
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"""
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self._load_config(config)
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self._mtime = 0
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def _load_config(self, config):
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self._path = config.get('directory', 'path')
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def search_paths(self):
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"""Return a list of paths to search for files."""
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return [self._path]
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def is_changed(self):
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"""Return true if the file search paths have changed."""
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# For now just return false and assume the path never changes. In the
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# future it might be interesting to watch for file changes and return
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# true if new files are added/removed from the directory. This is
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# called in a tight loop of the main program so it needs to be fast and
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# not resource intensive.
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mtime = os.path.getmtime(self._path)
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changed = mtime and mtime > self._mtime
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self._mtime = mtime
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return changed
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def idle_message(self):
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"""Return a message to display when idle and no files are found."""
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return 'No files found in {0}'.format(self._path)
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def create_file_reader(config):
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"""Create new file reader based on reading a directory on disk."""
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return DirectoryReader(config)
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