Create thefuck.archlinux

thefuck/archlinux.py

@@ -0,0 +1,41 @@
+""" This file provide some utility functions for Arch Linux specific rules."""
+import thefuck.utils
+import subprocess
+
+
+@thefuck.utils.memoize
+def get_pkgfile(command):
+    """ Gets the packages that provide the given command using `pkgfile`.
+
+    If the command is of the form `sudo foo`, searches for the `foo` command
+    instead.
+    """
+    try:
+        command = command.script.strip()
+
+        if command.startswith('sudo '):
+            command = command[5:]
+
+        command = command.split(" ")[0]
+
+        packages = subprocess.check_output(
+            ['pkgfile', '-b', '-v', command],
+            universal_newlines=True, stderr=thefuck.utils.DEVNULL
+        ).splitlines()
+
+        return [package.split()[0] for package in packages]
+    except subprocess.CalledProcessError:
+        return None
+
+
+def archlinux_env():
+    if thefuck.utils.which('yaourt'):
+        pacman = 'yaourt'
+    elif thefuck.utils.which('pacman'):
+        pacman = 'sudo pacman'
+    else:
+        return False, None
+
+    enabled_by_default = thefuck.utils.which('pkgfile')
+
+    return enabled_by_default, pacman

thefuck/rules/pacman.py

@@ -1,46 +1,16 @@
-import subprocess
-from thefuck.utils import DEVNULL, which
+from thefuck.archlinux import archlinux_env, get_pkgfile
 from thefuck import shells
-from thefuck.utils import memoize
-
-
-@memoize
-def __get_pkgfile(command):
-    try:
-        command = command.script
-
-        if command.startswith('sudo'):
-            command = command[5:]
-
-        command = command.split(" ")[0]
-
-        packages = subprocess.check_output(
-            ['pkgfile', '-b', '-v', command],
-            universal_newlines=True, stderr=DEVNULL
-        ).splitlines()
-
-        return [package.split()[0] for package in packages]
-    except subprocess.CalledProcessError:
-        return None
 
 
 def match(command, settings):
-    return 'not found' in command.stderr and __get_pkgfile(command)
+    return 'not found' in command.stderr and get_pkgfile(command)
 
 
 def get_new_command(command, settings):
-    packages = __get_pkgfile(command)
+    packages = get_pkgfile(command)
 
     formatme = shells.and_('{} -S {}', '{}')
     return [formatme.format(pacman, package, command.script)
             for package in packages]
 
-
-if not which('pkgfile'):
-    enabled_by_default = False
-elif which('yaourt'):
-    pacman = 'yaourt'
-elif which('pacman'):
-    pacman = 'sudo pacman'
-else:
-    enabled_by_default = False
+enabled_by_default, pacman = archlinux_env()

thefuck/utils.py

@@ -1,3 +1,4 @@
+from .types import Command
 from difflib import get_close_matches
 from functools import wraps
 from pathlib import Path
@@ -6,7 +7,6 @@ import os
 import pickle
 import re
 import six
-from .types import Command
 
 
 DEVNULL = open(os.devnull, 'w')