74 lines
2.2 KiB
Python
74 lines
2.2 KiB
Python
#
|
|
# Gramps - a GTK+/GNOME based genealogy program
|
|
#
|
|
# Copyright (C) 2000-2007 Donald N. Allingham
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
#
|
|
|
|
# GrampsLogger/_RotateHandler.py
|
|
# $Id$
|
|
|
|
import logging
|
|
|
|
class RotateHandler(logging.Handler):
|
|
"""
|
|
A handler class which buffers logging records in memory. A rotating
|
|
buffer is used so that the last X records are always available.
|
|
"""
|
|
def __init__(self, capacity):
|
|
"""
|
|
Initialize the handler with the buffer size.
|
|
"""
|
|
logging.Handler.__init__(self)
|
|
|
|
self.set_capacity(capacity)
|
|
|
|
|
|
def emit(self, record):
|
|
"""
|
|
Add the record to the rotating buffer.
|
|
|
|
"""
|
|
self._buffer[self._index] = record
|
|
self._index = (self._index + 1 ) % self._capacity
|
|
|
|
|
|
def get_buffer(self):
|
|
"""
|
|
Return the buffer with the records in the correct order.
|
|
"""
|
|
|
|
return filter(None,
|
|
self._buffer[self._index:] + self._buffer[:self._index])
|
|
|
|
def get_formatted_log(self, remove_tail_duplicate=None):
|
|
"""
|
|
Return the log buffer after it has been formatted.
|
|
|
|
Returns a list of strings.
|
|
"""
|
|
|
|
return [self.format(record) for record in self._buffer[self._index:] + self._buffer[:self._index]
|
|
if record is not None and record != remove_tail_duplicate]
|
|
|
|
def set_capacity(self,capacity):
|
|
"""
|
|
Set the number of log records that will be stored.
|
|
"""
|
|
self._capacity = capacity
|
|
self._index = 0
|
|
self._buffer = self._capacity * [None]
|