thefuck/shells/fish.py
from subprocess import Popen, PIPE
from time import time
import os
import sys
import six
from .. import logs
from ..conf import settings
from ..const import ARGUMENT_PLACEHOLDER
from ..utils import DEVNULL, cache
from .generic import Generic
@cache('~/.config/fish/config.fish', '~/.config/fish/functions')
def _get_functions(overridden):
proc = Popen(['fish', '-ic', 'functions'], stdout=PIPE, stderr=DEVNULL)
functions = proc.stdout.read().decode('utf-8').strip().split('\n')
return {func: func for func in functions if func not in overridden}
@cache('~/.config/fish/config.fish')
def _get_aliases(overridden):
aliases = {}
proc = Popen(['fish', '-ic', 'alias'], stdout=PIPE, stderr=DEVNULL)
alias_out = proc.stdout.read().decode('utf-8').strip()
if not alias_out:
return aliases
for alias in alias_out.split('\n'):
for separator in (' ', '='):
split_alias = alias.replace('alias ', '', 1).split(separator, 1)
if len(split_alias) == 2:
name, value = split_alias
break
else:
continue
if name not in overridden:
aliases[name] = value
return aliases
class Fish(Generic):
friendly_name = 'Fish Shell'
def _get_overridden_aliases(self):
overridden = os.environ.get('THEFUCK_OVERRIDDEN_ALIASES',
os.environ.get('TF_OVERRIDDEN_ALIASES', ''))
default = {'cd', 'grep', 'ls', 'man', 'open'}
for alias in overridden.split(','):
default.add(alias.strip())
return sorted(default)
def app_alias(self, alias_name):
if settings.alter_history:
alter_history = (' builtin history delete --exact'
' --case-sensitive -- $fucked_up_command\n'
' builtin history merge\n')
else:
alter_history = ''
# It is VERY important to have the variables declared WITHIN the alias
return ('function {0} -d "Correct your previous console command"\n'
' set -l fucked_up_command $history[1]\n'
' env TF_SHELL=fish TF_ALIAS={0} PYTHONIOENCODING=utf-8'
' thefuck $fucked_up_command {2} $argv | read -l unfucked_command\n'
' if [ "$unfucked_command" != "" ]\n'
' eval $unfucked_command\n{1}'
' end\n'
'end').format(alias_name, alter_history, ARGUMENT_PLACEHOLDER)
def get_aliases(self):
overridden = self._get_overridden_aliases()
functions = _get_functions(overridden)
raw_aliases = _get_aliases(overridden)
functions.update(raw_aliases)
return functions
def _expand_aliases(self, command_script):
aliases = self.get_aliases()
binary = command_script.split(' ')[0]
if binary in aliases and aliases[binary] != binary:
return command_script.replace(binary, aliases[binary], 1)
elif binary in aliases:
return u'fish -ic "{}"'.format(command_script.replace('"', r'\"'))
else:
return command_script
def _get_history_file_name(self):
return os.path.expanduser('~/.config/fish/fish_history')
def _get_history_line(self, command_script):
return u'- cmd: {}\n when: {}\n'.format(command_script, int(time()))
def _script_from_history(self, line):
if '- cmd: ' in line:
return line.split('- cmd: ', 1)[1]
else:
return ''
def and_(self, *commands):
return u'; and '.join(commands)
def or_(self, *commands):
return u'; or '.join(commands)
def how_to_configure(self):
return self._create_shell_configuration(
content=u"thefuck --alias | source",
path='~/.config/fish/config.fish',
reload='fish')
def _get_version(self):
"""Returns the version of the current shell"""
proc = Popen(['fish', '--version'], stdout=PIPE, stderr=DEVNULL)
return proc.stdout.read().decode('utf-8').split()[-1]
def put_to_history(self, command):
try:
return self._put_to_history(command)
except IOError:
logs.exception("Can't update history", sys.exc_info())
def _put_to_history(self, command_script):
"""Puts command script to shell history."""
history_file_name = self._get_history_file_name()
if os.path.isfile(history_file_name):
with open(history_file_name, 'a') as history:
entry = self._get_history_line(command_script)
if six.PY2:
history.write(entry.encode('utf-8'))
else:
history.write(entry)