106 lines
3.6 KiB
Python
106 lines
3.6 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
|
|
|
|
# Copyright 2014 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
|
|
#
|
|
# This file is part of qutebrowser.
|
|
#
|
|
# qutebrowser 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 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# qutebrowser 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 qutebrowser. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
"""Parser for line-based configurations like histories."""
|
|
|
|
import os
|
|
import os.path
|
|
|
|
from PyQt5.QtCore import pyqtSlot
|
|
|
|
import qutebrowser.utils.log as log
|
|
|
|
|
|
class LineConfigParser:
|
|
|
|
"""Parser for configuration files which are simply line-based.
|
|
|
|
Attributes:
|
|
data: A list of lines.
|
|
_configdir: The directory to read the config from.
|
|
_configfile: The config file path.
|
|
"""
|
|
|
|
def __init__(self, configdir, fname, limit=None):
|
|
"""Config constructor.
|
|
|
|
Args:
|
|
configdir: Directory to read the config from.
|
|
fname: Filename of the config file.
|
|
limit: Config tuple (section, option) which contains a limit.
|
|
"""
|
|
self._configdir = configdir
|
|
self._configfile = os.path.join(self._configdir, fname)
|
|
self._limit = limit
|
|
if not os.path.isfile(self._configfile):
|
|
self.data = []
|
|
else:
|
|
log.init.debug("Reading config from {}".format(self._configfile))
|
|
self.read(self._configfile)
|
|
|
|
def __iter__(self):
|
|
"""Iterate over the set data."""
|
|
return self.data.__iter__()
|
|
|
|
def read(self, filename):
|
|
"""Read the data from a file."""
|
|
with open(filename, 'r', encoding='utf-8') as f:
|
|
self.data = [line.rstrip('\n') for line in f.readlines()]
|
|
|
|
def write(self, fp, limit=-1):
|
|
"""Write the data to a file.
|
|
|
|
Args:
|
|
fp: A file object to write the data to.
|
|
limit: How many lines to write, or -1 for no limit.
|
|
"""
|
|
if limit == -1:
|
|
data = self.data
|
|
else:
|
|
data = self.data[-limit:]
|
|
fp.write('\n'.join(data))
|
|
|
|
def save(self):
|
|
"""Save the config file."""
|
|
if not self.data:
|
|
log.destroy.debug("No data to save.")
|
|
return
|
|
# We need to import this here because config needs LineConfigParser.
|
|
import qutebrowser.config.config as config
|
|
limit = -1 if self._limit is None else config.get(*self._limit)
|
|
if limit == 0:
|
|
return
|
|
if not os.path.exists(self._configdir):
|
|
os.makedirs(self._configdir, 0o755)
|
|
log.destroy.debug("Saving config to {}".format(self._configfile))
|
|
with open(self._configfile, 'w', encoding='utf-8') as f:
|
|
self.write(f, limit)
|
|
|
|
@pyqtSlot(str, str)
|
|
def on_config_changed(self, section, option):
|
|
"""Delete the file if the limit was changed to 0."""
|
|
if self._limit is None:
|
|
return
|
|
# We need to import this here because config needs LineConfigParser.
|
|
import qutebrowser.config.config as config
|
|
value = config.get(section, option)
|
|
if (section, option) == self._limit and value == 0:
|
|
if os.path.exists(self._configfile):
|
|
os.remove(self._configfile)
|