Pablo Santiago Blum de Aguiar
891fbe7ed1
Fish Shell overrides some shell commands, such as `cd` and `ls` and therefore some rules fail to match. The following aliases are excluded by default: * cd * grep * ls * man * open To change them, one can use the `TF_OVERRIDDEN_ALIASES` environment variable such as: ``` set TF_OVERRIDDEN_ALIASES 'cd,grep,ls' ``` Fix #262
267 lines
8.0 KiB
Python
267 lines
8.0 KiB
Python
"""Module with shell specific actions, each shell class should
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implement `from_shell`, `to_shell`, `app_alias`, `put_to_history` and `get_aliases`
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methods.
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"""
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from collections import defaultdict
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from subprocess import Popen, PIPE
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from time import time
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import os
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import io
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from psutil import Process
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import six
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from .utils import DEVNULL, memoize
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class Generic(object):
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def get_aliases(self):
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return {}
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def _expand_aliases(self, command_script):
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aliases = self.get_aliases()
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binary = command_script.split(' ')[0]
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if binary in aliases:
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return command_script.replace(binary, aliases[binary], 1)
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else:
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return command_script
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def from_shell(self, command_script):
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"""Prepares command before running in app."""
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return self._expand_aliases(command_script)
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def to_shell(self, command_script):
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"""Prepares command for running in shell."""
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return command_script
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def app_alias(self):
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return "\nalias fuck='TF_ALIAS=fuck eval $(thefuck $(fc -ln -1))'\n"
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def _get_history_file_name(self):
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return ''
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def _get_history_line(self, command_script):
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return ''
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def put_to_history(self, command_script):
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"""Puts command script to shell history."""
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history_file_name = self._get_history_file_name()
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if os.path.isfile(history_file_name):
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with open(history_file_name, 'a') as history:
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history.write(self._get_history_line(command_script))
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def _script_from_history(self, line):
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"""Returns prepared history line.
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Should return a blank line if history line is corrupted or empty.
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"""
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return ''
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def get_history(self):
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"""Returns list of history entries."""
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history_file_name = self._get_history_file_name()
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if os.path.isfile(history_file_name):
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with io.open(history_file_name, 'r',
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encoding='utf-8', errors='ignore') as history:
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for line in history:
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prepared = self._script_from_history(line)\
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.strip()
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if prepared:
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yield prepared
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def and_(self, *commands):
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return u' && '.join(commands)
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class Bash(Generic):
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def app_alias(self):
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return "\nTF_ALIAS=fuck alias fuck='eval $(thefuck $(fc -ln -1));" \
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" history -r'\n"
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def _parse_alias(self, alias):
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name, value = alias.replace('alias ', '', 1).split('=', 1)
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if value[0] == value[-1] == '"' or value[0] == value[-1] == "'":
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value = value[1:-1]
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return name, value
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def get_aliases(self):
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proc = Popen('bash -ic alias', stdout=PIPE, stderr=DEVNULL,
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shell=True)
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return dict(
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self._parse_alias(alias)
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for alias in proc.stdout.read().decode('utf-8').split('\n')
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if alias and '=' in alias)
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def _get_history_file_name(self):
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return os.environ.get("HISTFILE",
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os.path.expanduser('~/.bash_history'))
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def _get_history_line(self, command_script):
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return u'{}\n'.format(command_script)
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def _script_from_history(self, line):
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print(line)
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return line
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class Fish(Generic):
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def _get_overridden_aliases(self):
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overridden_aliases = os.environ.get('TF_OVERRIDDEN_ALIASES', '').strip()
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if overridden_aliases:
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return [alias.strip() for alias in overridden_aliases.split(',')]
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else:
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return ['cd', 'grep', 'ls', 'man', 'open']
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def app_alias(self):
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return ("set TF_ALIAS fuck\n"
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"function fuck -d 'Correct your previous console command'\n"
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" set -l exit_code $status\n"
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" set -l eval_script"
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" (mktemp 2>/dev/null ; or mktemp -t 'thefuck')\n"
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" set -l fucked_up_commandd $history[1]\n"
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" thefuck $fucked_up_commandd > $eval_script\n"
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" . $eval_script\n"
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" rm $eval_script\n"
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" if test $exit_code -ne 0\n"
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" history --delete $fucked_up_commandd\n"
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" end\n"
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"end")
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def get_aliases(self):
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overridden = self._get_overridden_aliases()
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proc = Popen('fish -ic functions', stdout=PIPE, stderr=DEVNULL,
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shell=True)
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functions = proc.stdout.read().decode('utf-8').strip().split('\n')
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return {func: func for func in functions if func not in overridden}
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def _expand_aliases(self, command_script):
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aliases = self.get_aliases()
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binary = command_script.split(' ')[0]
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if binary in aliases:
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return u'fish -ic "{}"'.format(command_script.replace('"', r'\"'))
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else:
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return command_script
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def from_shell(self, command_script):
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"""Prepares command before running in app."""
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return self._expand_aliases(command_script)
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def _get_history_file_name(self):
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return os.path.expanduser('~/.config/fish/fish_history')
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def _get_history_line(self, command_script):
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return u'- cmd: {}\n when: {}\n'.format(command_script, int(time()))
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def and_(self, *commands):
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return u'; and '.join(commands)
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class Zsh(Generic):
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def app_alias(self):
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return "\nTF_ALIAS=fuck" \
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" alias fuck='eval $(thefuck $(fc -ln -1 | tail -n 1));" \
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" fc -R'\n"
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def _parse_alias(self, alias):
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name, value = alias.split('=', 1)
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if value[0] == value[-1] == '"' or value[0] == value[-1] == "'":
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value = value[1:-1]
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return name, value
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def get_aliases(self):
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proc = Popen('zsh -ic alias', stdout=PIPE, stderr=DEVNULL,
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shell=True)
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return dict(
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self._parse_alias(alias)
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for alias in proc.stdout.read().decode('utf-8').split('\n')
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if alias and '=' in alias)
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def _get_history_file_name(self):
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return os.environ.get("HISTFILE",
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os.path.expanduser('~/.zsh_history'))
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def _get_history_line(self, command_script):
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return u': {}:0;{}\n'.format(int(time()), command_script)
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def _script_from_history(self, line):
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if ';' in line:
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return line.split(';', 1)[1]
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else:
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return ''
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class Tcsh(Generic):
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def app_alias(self):
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return "\nalias fuck 'setenv TF_ALIAS fuck && set fucked_cmd=`history -h 2 | head -n 1` && eval `thefuck ${fucked_cmd}`'\n"
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def _parse_alias(self, alias):
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name, value = alias.split("\t", 1)
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return name, value
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def get_aliases(self):
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proc = Popen('tcsh -ic alias', stdout=PIPE, stderr=DEVNULL,
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shell=True)
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return dict(
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self._parse_alias(alias)
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for alias in proc.stdout.read().decode('utf-8').split('\n')
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if alias and '\t' in alias)
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def _get_history_file_name(self):
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return os.environ.get("HISTFILE",
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os.path.expanduser('~/.history'))
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def _get_history_line(self, command_script):
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return u'#+{}\n{}\n'.format(int(time()), command_script)
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shells = defaultdict(lambda: Generic(), {
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'bash': Bash(),
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'fish': Fish(),
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'zsh': Zsh(),
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'csh': Tcsh(),
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'tcsh': Tcsh()})
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def _get_shell():
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try:
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shell = Process(os.getpid()).parent().name()
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except TypeError:
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shell = Process(os.getpid()).parent.name
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return shells[shell]
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def from_shell(command):
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return _get_shell().from_shell(command)
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def to_shell(command):
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return _get_shell().to_shell(command)
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def app_alias():
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print(_get_shell().app_alias())
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def thefuck_alias():
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return os.environ.get('TF_ALIAS', 'fuck')
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def put_to_history(command):
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return _get_shell().put_to_history(command)
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def and_(*commands):
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return _get_shell().and_(*commands)
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@memoize
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def get_aliases():
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return list(_get_shell().get_aliases().keys())
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@memoize
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def get_history():
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return list(_get_shell().get_history())
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