65 lines
1.9 KiB
Python
Executable File
65 lines
1.9 KiB
Python
Executable File
#!/usr/bin/python3
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import datetime
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import os
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import sys
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import time
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class WatchedFile:
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def __init__(self, name):
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self.name = name
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self.reopen()
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def reopen(self):
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self.fd = open(self.name, errors='replace')
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self.fileno = self.fd.fileno()
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self.last_ts = 0
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def format_ts(ts_ns):
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return datetime.datetime.fromtimestamp(ts_ns / 1E9).strftime("%H:%M:%S.%f")
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def watch(dir):
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os.chdir(dir)
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last_ts = 0
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watched_files = {}
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filename_length = 0
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while True:
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# are there new files?
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st = os.stat(".")
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if st.st_mtime_ns > last_ts:
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last_ts = st.st_mtime_ns
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for de in os.scandir("."):
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if de.is_file():
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if de.name not in watched_files:
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watched_files[de.name] = WatchedFile(de.name)
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if len(de.name) > filename_length:
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filename_length = len(de.name)
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# has any of the files changed
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for f in watched_files.values():
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# XXX - we should also detect replaced files.
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st = os.stat(f.fileno)
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try:
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stf = os.stat(f.name)
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if stf.st_ino != st.st_ino:
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f.reopen()
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except FileNotFoundError:
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# ignore,
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# or maybe remove from watched_files?
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# or just mark as deleted?
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pass
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if st.st_mtime_ns > f.last_ts:
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f.last_ts = st.st_mtime_ns
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new_content = f.fd.read()
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lines = new_content.split("\n")
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if lines[-1] == "":
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lines.pop()
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for ln in lines:
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print(f"{f.name:{filename_length}}", format_ts(f.last_ts), ln)
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time.sleep(0.1)
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if __name__ == "__main__":
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dir = sys.argv[1] if len(sys.argv) > 1 else "."
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watch(dir)
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