mirror of
https://github.com/wting/autojump
synced 2024-10-27 20:34:07 +00:00
Refactor away from global variables, use defaultdict/iteration instead.
This commit is contained in:
William Ting
parent
f5ff5a126f
commit
2582ad6421
218
bin/autojump
218
bin/autojump
@ -21,65 +21,32 @@
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from __future__ import division, print_function
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import sys
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import os
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try:
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import argparse
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except ImportError:
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# Python 2.6 support
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sys.path.append(os.path.dirname(os.path.realpath(__file__)))
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import autojump_argparse as argparse
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sys.path.pop()
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from operator import itemgetter
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import collections
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import math
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import operator
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import os
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import re
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import shutil
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import sys
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from tempfile import NamedTemporaryFile
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VERSION = 'release-v21.5.9'
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MAX_KEYWEIGHT = 1000
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MAX_STORED_PATHS = 1000
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COMPLETION_SEPARATOR = '__'
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ARGS = None
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CONFIG_DIR = None
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DB_FILE = None
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TESTING = False
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# load config from environmental variables
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if 'AUTOJUMP_DATA_DIR' in os.environ:
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CONFIG_DIR = os.environ.get('AUTOJUMP_DATA_DIR')
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else:
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xdg_data_dir = os.environ.get('XDG_DATA_HOME') or \
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os.path.join(os.environ['HOME'], '.local', 'share')
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CONFIG_DIR = os.path.join(xdg_data_dir, 'autojump')
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KEEP_ALL_ENTRIES = False
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if 'AUTOJUMP_KEEP_ALL_ENTRIES' in os.environ and \
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os.environ.get('AUTOJUMP_KEEP_ALL_ENTRIES') == '1':
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KEEP_ALL_ENTRIES = True
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ALWAYS_IGNORE_CASE = False
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if 'AUTOJUMP_IGNORE_CASE' in os.environ and \
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os.environ.get('AUTOJUMP_IGNORE_CASE') == '1':
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ALWAYS_IGNORE_CASE = True
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KEEP_SYMLINKS = False
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if 'AUTOJUMP_KEEP_SYMLINKS' in os.environ and \
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os.environ.get('AUTOJUMP_KEEP_SYMLINKS') == '1':
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KEEP_SYMLINKS = True
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if CONFIG_DIR == os.path.expanduser('~'):
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DB_FILE = CONFIG_DIR + '/.autojump.txt'
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else:
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DB_FILE = CONFIG_DIR + '/autojump.txt'
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class Database:
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"""
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Object for interfacing with autojump database.
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Object for interfacing with autojump database file.
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"""
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def __init__(self, filename):
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self.filename = filename
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self.data = {}
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def __init__(self, config):
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self.config = config
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self.filename = config['db']
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self.data = collections.defaultdict(int)
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self.load()
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def __len__(self):
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@ -90,43 +57,46 @@ class Database:
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Increase weight of existing paths or initialize new ones to 10.
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"""
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path = path.rstrip(os.sep)
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if path not in self.data:
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self.data[path] = increment
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else:
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import math
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if self.data[path]:
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self.data[path] = math.sqrt((self.data[path]**2) + (increment**2))
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else:
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self.data[path] = increment
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self.save()
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def decrease(self, path, increment=15):
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"""
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Decrease weight of existing path. Unknown ones are ignored.
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"""
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if path in self.data:
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if self.data[path] < increment:
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self.data[path] = 0
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else:
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self.data[path] -= increment
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self.save()
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def decay(self):
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"""
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Decay database entries.
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"""
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for k in self.data.keys():
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self.data[k] *= 0.9
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try:
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items = self.data.iteritems()
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except AttributeError:
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items = self.data.items()
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for path, _ in items:
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self.data[path] *= 0.9
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def get_weight(self, path):
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"""
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Return path weight.
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"""
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if path in self.data:
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return self.data[path]
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else:
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return 0
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def load(self, error_recovery = False):
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"""
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Try to open the database file, recovering from backup if needed.
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Open database file, recovering from backup if needed.
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"""
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if os.path.exists(self.filename):
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try:
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@ -162,10 +132,11 @@ class Database:
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"""
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Trims and decays database entries when exceeding settings.
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"""
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if sum(self.data.values()) > MAX_KEYWEIGHT:
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if sum(self.data.values()) > self.config['max_weight']:
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self.decay()
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if len(self.data) > MAX_STORED_PATHS:
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if len(self.data) > self.config['max_paths']:
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self.trim()
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self.save()
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def purge(self):
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@ -173,10 +144,12 @@ class Database:
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Deletes all entries that no longer exist on system.
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"""
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removed = []
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for path in list(self.data.keys()):
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if not os.path.exists(path):
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removed.append(path)
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del self.data[path]
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self.save()
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return removed
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@ -189,9 +162,9 @@ class Database:
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if ((not os.path.exists(self.filename)) or
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os.name == 'nt' or
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os.getuid() == os.stat(self.filename)[4]):
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temp = NamedTemporaryFile(dir = CONFIG_DIR, delete = False)
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temp = NamedTemporaryFile(dir=self.config['data'], delete=False)
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for path, weight in sorted(self.data.items(),
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key=itemgetter(1),
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key=operator.itemgetter(1),
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reverse=True):
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temp.write((unico("%s\t%s\n" % (weight, path)).encode("utf-8")))
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@ -223,18 +196,57 @@ class Database:
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If database has exceeded MAX_STORED_PATHS, removes bottom 10%.
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"""
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dirs = list(self.data.items())
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dirs.sort(key=itemgetter(1))
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dirs.sort(key=operator.itemgetter(1))
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remove_cnt = int(percent * len(dirs))
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for path, _ in dirs[:remove_cnt]:
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del self.data[path]
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def set_defaults():
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config = {}
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def options():
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"""
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Parse command line options.
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"""
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global ARGS
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config['version'] = 'release-v21.6.0'
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config['max_weight'] = 1000
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config['max_paths'] = 1000
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config['separator'] = '__'
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config['ignore_case'] = False
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config['keep_entries'] = False
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config['keep_symlinks'] = False
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config['debug'] = False
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home = os.path.expanduser('HOME')
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xdg_data = os.environ.get('XDG_DATA_HOME') or \
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os.path.join(home, '.local', 'share')
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config['data'] = os.path.join(xdg_data, 'autojump')
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config['db'] = config['data'] + '/autojump.txt'
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return config
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def parse_env(config):
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home = os.path.expanduser('HOME')
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if 'AUTOJUMP_DATA_DIR' in os.environ:
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config['data'] = os.environ.get('AUTOJUMP_DATA_DIR')
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config['db'] = config['data'] + '/autojump.txt'
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if config['data'] == home:
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config['db'] = config['data'] + '/.autojump.txt'
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if 'AUTOJUMP_KEEP_ALL_ENTRIES' in os.environ and \
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os.environ.get('AUTOJUMP_KEEP_ALL_ENTRIES') == '1':
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config['keep_entries'] = True
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if 'AUTOJUMP_IGNORE_CASE' in os.environ and \
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os.environ.get('AUTOJUMP_IGNORE_CASE') == '1':
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config['ignore_case'] = True
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if 'AUTOJUMP_KEEP_SYMLINKS' in os.environ and \
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os.environ.get('AUTOJUMP_KEEP_SYMLINKS') == '1':
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config['keep_symlinks'] = True
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return config
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def parse_arg(config):
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parser = argparse.ArgumentParser(
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description='Automatically jump to \
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directory passed as an argument.',
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@ -263,48 +275,48 @@ def options():
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'-s', '--stat', action="store_true", default=False,
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help='show database entries and their key weights')
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parser.add_argument(
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'-v', '--version', action="version", version="%(prog)s " + VERSION,
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help='show version information and exit')
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'-v', '--version', action="version", version="%(prog)s " +
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config['version'], help='show version information and exit')
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ARGS = parser.parse_args()
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args = parser.parse_args()
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db = Database(config)
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# The home dir can be reached quickly by "cd" and may interfere with other
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# directories
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if (ARGS.add):
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if(ARGS.add != os.path.expanduser("~")):
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db = Database(DB_FILE)
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db.add(decode(ARGS.add))
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return True
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if (args.add):
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if (args.add != os.path.expanduser("~")):
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db.add(decode(args.add))
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if (ARGS.decrease):
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if(ARGS.decrease != os.path.expanduser("~")):
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db = Database(DB_FILE)
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# FIXME: handle symlinks?
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db.decrease(os.getcwd(), ARGS.decrease)
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return True
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sys.exit(0)
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if (ARGS.purge):
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db = Database(DB_FILE)
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if (args.decrease):
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if (args.decrease != os.path.expanduser("~")):
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db.decrease(os.getcwd(), args.decrease)
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sys.exit(0)
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if (args.purge):
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removed = db.purge()
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if len(removed) > 0:
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if len(removed):
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for dir in removed:
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output(unico(dir))
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print("Number of database entries removed: %d" % len(removed))
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return True
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if (ARGS.stat):
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db = Database(DB_FILE)
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dirs = list(db.data.items())
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dirs.sort(key=itemgetter(1))
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for path, count in dirs[-100:]:
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output(unico("%.1f:\t%s") % (count, path))
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print("Number of database entries removed: %d" % len(removed))
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sys.exit(0)
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if (args.stat):
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for path, weight in sorted(db.data, key=db.data.get)[-100:]:
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output(unico("%.1f:\t%s") % (weight, path))
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print("________________________________________\n")
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print("%d:\t total key weight" % sum(db.data.values()))
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print("%d:\t stored directories" % len(dirs))
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print("db file: %s" % DB_FILE)
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return True
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return False
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sys.exit(0)
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config['args'] = args
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return config
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def decode(text, encoding=None, errors="strict"):
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"""
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@ -385,7 +397,7 @@ def find_matches(db, patterns, max_matches=1, ignore_case=False, fuzzy=False):
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current_dir = None
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dirs = list(db.data.items())
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dirs.sort(key=itemgetter(1), reverse=True)
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dirs.sort(key=operator.itemgetter(1), reverse=True)
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results = []
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if fuzzy:
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from difflib import get_close_matches
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@ -450,12 +462,9 @@ def find_matches(db, patterns, max_matches=1, ignore_case=False, fuzzy=False):
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return results
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def shell_utility():
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"""
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Run this when autojump is called as a shell utility.
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"""
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if options(): return True
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db = Database(DB_FILE)
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def main():
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config = parse_arg(parse_env(set_defaults()))
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db = Database(config['db'], config)
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# if no directories, add empty string
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if (ARGS.directory == ''):
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@ -515,8 +524,7 @@ def shell_utility():
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if not KEEP_ALL_ENTRIES:
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db.maintenance()
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return True
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return 0
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if __name__ == "__main__":
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if not shell_utility():
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sys.exit(1)
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sys.exit(main())
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