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#!/usr/bin/env python | |
# -*- coding: utf-8 -*- | |
import sys | |
import os | |
import time | |
import subprocess | |
from threading import Thread | |
import signal | |
def getPath(dir, prefix = None): | |
files = sorted(filter(lambda f: os.path.isfile(dir + f), os.listdir(dir))) | |
if None != prefix: | |
files = filter(lambda f: f.startswith(prefix), files) | |
return dir + files[-1] | |
class Tailer: | |
proc = None | |
def __call__(self, path): | |
self.proc = subprocess.Popen('tail -f ' + path, shell=True) | |
argv = sys.argv | |
if 1 == len(argv): | |
print(u'第一引数に監視対象のディレクトリを指定してください') | |
print(u'第二引数にファイルの接頭語を指定することが任意でできます') | |
sys.exit() | |
dir = argv[1] if '/' == argv[1][-1] else argv[1] + '/' | |
prefix = None if 3 != len(argv) else argv[2] | |
print('watching: ' + dir) | |
last = '' | |
tailer = None | |
while(True): | |
path = getPath(dir, prefix) | |
if path != last: | |
print path | |
if None != tailer: | |
os.kill(tailer.proc.pid, signal.SIGUSR1) | |
last = path | |
tailer = Tailer() | |
thread = Thread(target=tailer, args=(path, )) | |
thread.start() | |
time.sleep(1) |
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