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fix: If default values were removed from ini file during execution, w…
…rite default values again. test: Added tests and improved coverage docs: Docs theme tweaks
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| # -*- coding: utf-8 -*- | ||
| import atexit | ||
| import threading | ||
| import time | ||
|
|
||
|
|
||
| class InterruptibleTimer: | ||
| """ | ||
| Performs a callback after a specified timeout. | ||
| The timer can be restarted by calling prolong() method. | ||
| """ | ||
| def __init__(self, timeout_seconds, callback): | ||
| self.callback = callback | ||
| self.thread = threading.Thread(target=self._target) | ||
| self.event = threading.Event() | ||
| self.lock = threading.Lock() | ||
| self.end_time = time.time() + timeout_seconds | ||
|
|
||
| # register atexit handler to make sure that changes are committed at exit | ||
| atexit.register(self._on_exit) | ||
|
|
||
| # start timer | ||
| self.thread.start() | ||
|
|
||
| def _target(self): | ||
| while True: | ||
| timeout = self.end_time - time.time() | ||
| timer_expired = self.event.wait(timeout) | ||
| # check if end_time reached in case of timer restart | ||
| if self.end_time <= time.time(): | ||
| self._fire_callback() | ||
| break | ||
| # check if callback was already fired | ||
| with self.lock: | ||
| if self.callback is None: | ||
| break | ||
|
|
||
| def _fire_callback(self): | ||
| with self.lock: | ||
| if self.callback is not None: | ||
| self.callback() | ||
| self.callback = None | ||
|
|
||
| def restart(self, timeout_seconds): | ||
| # Reset the event and add extra time to the timeout | ||
| self.end_time = time.time() + timeout_seconds | ||
| self.event.clear() | ||
|
|
||
| def cancel(self): | ||
| with self.lock: | ||
| self.callback = None | ||
| self.event.set() | ||
|
|
||
| def _on_exit(self): | ||
| """ | ||
| Fire immediately | ||
| """ | ||
| self.end_time = 0 | ||
| self.event.set() | ||
| self.thread.join() | ||
|
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||
|
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||
| class MixinDelayedWrite: | ||
| """ | ||
| Mixin for delayed write | ||
| """ | ||
| DEFAULT_DELAY_SECONDS = 1.0 | ||
|
|
||
| def __init__(self, delayed_write_enabled=False, delay_seconds=DEFAULT_DELAY_SECONDS): | ||
| self._delayed_write_enabled = delayed_write_enabled | ||
| self._delay_seconds = delay_seconds | ||
| self._timer = None | ||
|
|
||
| def _set_delayed_write(self, delayed_write_enabled, delay_seconds=DEFAULT_DELAY_SECONDS): | ||
| """ | ||
| Set delayed write | ||
| """ | ||
| self._delayed_write_enabled = delayed_write_enabled | ||
| self._delay_seconds = delay_seconds | ||
|
|
||
| def _restart_delayed_timer(self): | ||
| """ | ||
| Restart delayed timer | ||
| """ | ||
| if not self._delayed_write_enabled or self._delay_seconds <= 0: | ||
| # fire immediately | ||
| self._commit_delayed_write() | ||
| else: | ||
| # restart timer | ||
| if self._timer is None: | ||
| self._timer = InterruptibleTimer(self._delay_seconds, self._on_timer_expired) | ||
| else: | ||
| self._timer.restart(self._delay_seconds) | ||
|
|
||
| def _on_timer_expired(self): | ||
| """ | ||
| On timer expired | ||
| """ | ||
| self._commit_delayed_write() | ||
|
|
||
| def _commit_delayed_write(self): | ||
| """ | ||
| Commit delayed write. | ||
| This method should be implemented in derived classes. | ||
| """ | ||
| raise NotImplementedError() |
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