Created
March 10, 2015 07:34
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Script to watch directory and launch hander.
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#!/usr/bin/python2.7 | |
# -*- coding: utf-8 -*- | |
# vim:ts=4:sw=4:softtabstop=4:smarttab:expandtab | |
""" | |
Watch for new downloads in ~/Downloads (or another directory) and take actions. | |
The actions are determined by the file extension (determining the mime type). | |
""" | |
from __future__ import absolute_import | |
from __future__ import print_function | |
from __future__ import unicode_literals | |
from __future__ import division | |
import sys | |
import os | |
import subprocess | |
import syslog | |
import blinker | |
import inotifyx | |
class InotifyWatcher(object): | |
"""Watch for new, complete file creations.""" | |
created = blinker.Signal() | |
def __init__(self): | |
self._fd = inotifyx.init() | |
self._watches = {} | |
self._starts = {} | |
syslog.openlog(b"InotifyWatcher") | |
def add_watch(self, directory): | |
thedir = os.path.expanduser(os.path.expandvars(directory)) | |
wd = inotifyx.add_watch(self._fd, os.path.expandvars(thedir), | |
inotifyx.IN_CREATE | inotifyx.IN_CLOSE_WRITE) | |
self._watches[wd] = thedir | |
return wd | |
def __del__(self): | |
self.close() | |
def close(self): | |
if self._fd is not None: | |
os.close(self._fd) | |
self._fd = None | |
self._watches.clear() | |
syslog.closelog() | |
def __enter__(self): | |
return self | |
def __exit__(self, *exc_info): | |
self.close() | |
def run(self): | |
while 1: | |
try: | |
events = inotifyx.get_events(self._fd) | |
except KeyboardInterrupt: | |
break | |
for event in events: | |
if event.mask & inotifyx.IN_CREATE: | |
self._starts[event.wd] = event.name | |
elif event.mask & inotifyx.IN_CLOSE_WRITE: | |
name = self._starts.pop(event.wd, None) | |
if name is not None: | |
thedir = self._watches[event.wd] | |
syslog.syslog( | |
"created {!r}".format(name).encode("ascii")) | |
InotifyWatcher.created.send(self, path=os.path.join(thedir, name)) | |
def open_file(watcher, path=None): | |
subprocess.call(["xdg-open", path]) | |
def main(argv): | |
InotifyWatcher.created.connect(open_file) | |
thedir = argv[1] if len(argv) > 1 else "~/Downloads" | |
with InotifyWatcher() as watcher: | |
watcher.add_watch(thedir) | |
watcher.run() | |
main(sys.argv) |
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What if you download a shell script containing "rm -rf ${HOME}" ?