37 lines
1.0 KiB
Python
37 lines
1.0 KiB
Python
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import collections
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import os
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import re
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import time
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def watch(folders, on_change, pattern=None, sleep_time=0.1):
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pattern = re.compile(pattern) if pattern else None
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watched = collections.defaultdict(lambda: -1)
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def walk():
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walked = []
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for folder in folders:
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for current, _, files in os.walk(folder):
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for f in files:
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if pattern and not pattern.search(f):
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continue
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path = os.path.join(current, f)
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info = os.stat(path)
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new_time = info.st_mtime
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if new_time > watched[path] > 0:
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on_change(path, new_time, False)
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watched[path] = new_time
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walked.append(path)
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# Look for deleted files
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for w in [x for x in watched.keys() if x not in walked]:
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del watched[w]
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on_change(w, -1, True)
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while True:
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walk()
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time.sleep(sleep_time)
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