add nushell support

thefuck/shells/__init__.py

@@ -10,14 +10,16 @@
 from .tcsh import Tcsh
 from .zsh import Zsh
 from .powershell import Powershell
+from .nushell import Nushell
 
 shells = {'bash': Bash,
  'fish': Fish,
  'zsh': Zsh,
  'csh': Tcsh,
  'tcsh': Tcsh,
  'powershell': Powershell,
- 'pwsh': Powershell}
+ 'pwsh': Powershell,
+ 'nu': Nushell}
 
 
 def _get_shell_from_env():

thefuck/shells/nushell.py

@@ -0,0 +1,72 @@
+from subprocess import Popen, PIPE
+import os
+import six
+import sys
+from .. import logs
+from ..utils import DEVNULL
+from .generic import Generic
+
+
+class Nushell(Generic):
+ friendly_name = 'Nushell Shell'
+
+ def get_aliases(self):
+ aliases = {}
+ command = 'help aliases | select name expansion | each { |row| $row.name + " ; " + $row.expansion } | str join (char nl)'
+ proc = Popen(['nu', '-l', '-c', command], stdout=PIPE, stderr=DEVNULL)
+ if proc.stdout is None:
+ return aliases
+ alias_out = proc.stdout.read().decode('utf-8').strip()
+ for alias in alias_out.split('\n'):
+ split_alias = alias.split(" ; ")
+ if len(split_alias) == 2:
+ name, value = split_alias
+ aliases[name] = value
+ return aliases
+
+ def app_alias(self, alias_name):
+ return 'alias {0} = thefuck $"(history | last 1 | get command | get 0)"'.format(alias_name)
+
+ def _get_history_file_name(self):
+ return os.path.expanduser('~/.config/nushell/history.txt')
+
+ def _get_history_line(self, command_script):
+ return command_script
+
+ 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='alias fuck = thefuck $"(history | last 1 | get command | get 0)"',
+ path="$nu.config-path",
+ reload="source $nu.config-path"
+ )
+
+ def _script_from_history(self, line):
+ return line
+
+ def put_to_history(self, command):
+ """Adds fixed command to shell history."""
+ try:
+ 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)
+ if six.PY2:
+ history.write(entry.encode('utf-8'))
+ else:
+ history.write(entry)
+ except IOError:
+ logs.exception("Can't update history", sys.exc_info())
+
+ def _get_version(self):
+ """Returns the version of the current shell"""
+ proc = Popen(['nu', '--version'], stdout=PIPE, stderr=DEVNULL)
+ if proc.stdout:
+ return proc.stdout.read().decode('utf-8')
+ else: 
+ raise Exception("Could not get the version of the current shell")