thefuck/rules/docker_not_command.py
from itertools import dropwhile, takewhile, islice
import re
import subprocess
from thefuck.utils import replace_command, for_app, which, cache
from thefuck.specific.sudo import sudo_support
@sudo_support
@for_app('docker')
def match(command):
return 'is not a docker command' in command.output or 'Usage: docker' in command.output
def _parse_commands(lines, starts_with):
lines = dropwhile(lambda line: not line.startswith(starts_with), lines)
lines = islice(lines, 1, None)
lines = list(takewhile(lambda line: line.strip(), lines))
return [line.strip().split(' ')[0] for line in lines]
def get_docker_commands():
proc = subprocess.Popen('docker', stdout=subprocess.PIPE, stderr=subprocess.PIPE)
# Old version docker returns its output to stdout, while newer version returns to stderr.
lines = proc.stdout.readlines() or proc.stderr.readlines()
lines = [line.decode('utf-8') for line in lines]
# Only newer versions of docker have management commands in the help text.
if 'Management Commands:\n' in lines:
management_commands = _parse_commands(lines, 'Management Commands:')
else:
management_commands = []
regular_commands = _parse_commands(lines, 'Commands:')
return management_commands + regular_commands
if which('docker'):
get_docker_commands = cache(which('docker'))(get_docker_commands)
@sudo_support
def get_new_command(command):
if 'Usage:' in command.output and len(command.script_parts) > 1:
management_subcommands = _parse_commands(command.output.split('\n'), 'Commands:')
return replace_command(command, command.script_parts[2], management_subcommands)
wrong_command = re.findall(
r"docker: '(\w+)' is not a docker command.", command.output)[0]
return replace_command(command, wrong_command, get_docker_commands())