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#!/usr/bin/env python3
#
# Watchdog script for vit -- automatically reloads vit when task data changes.
# Monitors the pending.data file and sends a SIGUSR1 signal to vit to trigger a refresh.
# Only works with Taskwarrior < 3.0 for now.
from os.path import expanduser
from signal import SIGUSR1
from subprocess import Popen
from vit.config_parser import ConfigParser, TaskParser
from vit.loader import Loader
try:
from watchdog.events import PatternMatchingEventHandler
from watchdog.observers import Observer
except ModuleNotFoundError:
print("Please install the Python watchdog library")
exit(1)
p = None
class VitEventHandler(PatternMatchingEventHandler):
def __init__(self):
super().__init__(patterns=["*/pending.data"], ignore_directories=True)
def on_modified(self, event):
if p:
p.send_signal(SIGUSR1)
loader = Loader()
config = ConfigParser(loader)
task_config = TaskParser(config)
data_location = task_config.subtree("data.location")
data_location = expanduser(data_location)
observer = Observer()
observer.schedule(VitEventHandler(), data_location)
observer.start()
p = Popen("vit")
p.wait()
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