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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import print_function
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from itertools import imap
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from operator import itemgetter
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import os
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import shutil
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import sys
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from time import time
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from utils import create_dir
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from utils import decode
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from utils import is_osx
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from utils import is_python3
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from utils import move_file
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from utils import unico as unicode
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BACKUP_THRESHOLD = 24 * 60 * 60
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def load(config):
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xdg_aj_home = os.path.join(
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os.path.expanduser('~'),
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'.local',
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'share',
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'autojump')
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if is_osx() and os.path.exists(xdg_aj_home):
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migrate_osx_xdg_data(config)
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if os.path.exists(config['data_path']):
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try:
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if is_python3():
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with open(data_path, 'r', encoding='utf-8') as f:
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lines = f.readlines()
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else:
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with open(data_path, 'r') as f:
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lines = f.readlines()
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except (IOError, EOFError):
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return load_backup(config)
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# example: '10.0\t/home/user\n' -> ['10.0', '/home/user']
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parse = lambda x: x.strip().split('\t')
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# example: ['10.0', '/home/user'] -> (u'/home/user', 10.0)
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convert = lambda x: (decode(x[1], 'utf-8'), float(x[0]))
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return dict(imap(convert, imap(parse, lines)))
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return {}
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def load_backup(config):
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if os.path.exists(config['data_backup_path']):
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move_file(config['data_backup_path'], config['data_path'])
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return load(config)
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return {}
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def migrate_osx_xdg_data(config):
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"""
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Older versions incorrectly used Linux XDG_DATA_HOME paths on OS X. This
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migrates autojump files from ~/.local/share/autojump to ~/Library/autojump
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"""
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assert is_osx(), "Expecting OSX."
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xdg_data_home = os.path.join(os.path.expanduser('~'), '.local', 'share')
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xdg_aj_home = os.path.join(xdg_data_home, 'autojump')
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data_path = os.path.join(xdg_aj_home, 'autojump.txt'),
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data_backup_path = os.path.join(xdg_aj_home, 'autojump.txt.bak'),
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if os.path.exists(data_path):
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move_file(data_path, config['data_path'])
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if os.path.exists(data_backup_path):
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move_file(data_backup_path, config['data_backup_path'])
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# cleanup
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shutil.rmtree(xdg_aj_home)
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if len(os.listdir(xdg_data_home)) == 0:
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shutil.rmtree(xdg_data_home)
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def save(config, data):
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"""Save data and create backup, creating a new data file if necessary."""
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create_dir(os.path.dirname(config['data_path']))
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# atomically save by writing to temporary file and moving to destination
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temp_file = tempfile.NamedTemporaryFile(
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dir=os.path.dirname(config['data_path']),
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delete=False)
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try:
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for path, weight in sorted(
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data.iteritems(),
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key=itemgetter(1),
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reverse=True):
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temp_file.write((unicode("%s\t%s\n" % (weight, path)).encode("utf-8")))
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temp_file.flush()
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os.fsync(temp_file)
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temp_file.close()
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except IOError as ex:
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print("Error saving autojump data (disk full?)" % ex, file=sys.stderr)
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sys.exit(1)
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# if no backup file or backup file is older than 24 hours,
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# move autojump.txt -> autojump.txt.bak
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if not os.path.exists(config['data_backup_path']) or \
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(time() - os.path.getmtime(config['data_backup_path']) > BACKUP_THRESHOLD):
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move_file(config['data_path'], config['data_backup_path'])
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# move temp_file -> autojump.txt
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move_file(temp_file.name, config['data_path'])
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