111 lines
4.0 KiB
Python
111 lines
4.0 KiB
Python
# Copyright (C) 2018 Avatao.com Innovative Learning Kft.
|
|
# All Rights Reserved. See LICENSE file for details.
|
|
|
|
from shlex import split
|
|
from re import search
|
|
|
|
from tfw.decorators.lazy_property import lazy_property
|
|
|
|
|
|
class CommandsEqual:
|
|
"""
|
|
This class is useful for comparing executed commands with
|
|
excepted commands (i.e. when triggering a state change when
|
|
the correct command is executed).
|
|
|
|
Note that in most cases you should test the changes
|
|
caused by the commands instead of just checking command history
|
|
(stuff can be done in countless ways and preparing for every
|
|
single case is impossible). This should only be used when
|
|
testing the changes would be very difficult, like when
|
|
explaining stuff with cli tools and such.
|
|
|
|
This class implicitly converts to bool, use it like
|
|
if CommandsEqual(...): ...
|
|
|
|
It tries detecting differing command parameter orders with similar
|
|
semantics and provides fuzzy logic options.
|
|
The rationale behind this is that a few false positives
|
|
are better than only accepting a single version of a command
|
|
(i.e. using ==).
|
|
"""
|
|
def __init__(
|
|
self, command_1, command_2,
|
|
fuzzyness=1, begin_similarly=True,
|
|
include_patterns=None, exclude_patterns=None
|
|
):
|
|
"""
|
|
:param command_1: Compared command 1
|
|
:param command_2: Compared command 2
|
|
:param fuzzyness: float between 0 and 1.
|
|
the percentage of arguments required to
|
|
match between commands to result in True.
|
|
i.e 1 means 100% - all arguments need to be
|
|
present in both commands, while 0.75
|
|
would mean 75% - in case of 4 arguments
|
|
1 could differ between the commands.
|
|
:param begin_similarly: bool, the first word of the commands
|
|
must match
|
|
:param include_patterns: list of regex patterns the commands
|
|
must include
|
|
:param exclude_patterns: list of regex patterns the commands
|
|
must exclude
|
|
"""
|
|
self.command_1 = split(command_1)
|
|
self.command_2 = split(command_2)
|
|
self.fuzzyness = fuzzyness
|
|
self.begin_similarly = begin_similarly
|
|
self.include_patterns = include_patterns
|
|
self.exclude_patterns = exclude_patterns
|
|
|
|
def __bool__(self):
|
|
if self.begin_similarly:
|
|
if not self.beginnings_are_equal:
|
|
return False
|
|
|
|
if self.include_patterns is not None:
|
|
if not self.commands_contain_include_patterns:
|
|
return False
|
|
|
|
if self.exclude_patterns is not None:
|
|
if not self.commands_contain_no_exclude_patterns:
|
|
return False
|
|
|
|
print(self.similarity)
|
|
return self.similarity >= self.fuzzyness
|
|
|
|
@lazy_property
|
|
def beginnings_are_equal(self):
|
|
return self.command_1[0] == self.command_2[0]
|
|
|
|
@lazy_property
|
|
def commands_contain_include_patterns(self):
|
|
return all((
|
|
self.contains_regex_patterns(self.command_1, self.include_patterns),
|
|
self.contains_regex_patterns(self.command_2, self.include_patterns)
|
|
))
|
|
|
|
@lazy_property
|
|
def commands_contain_no_exclude_patterns(self):
|
|
return all((
|
|
not self.contains_regex_patterns(self.command_1, self.exclude_patterns),
|
|
not self.contains_regex_patterns(self.command_2, self.exclude_patterns)
|
|
))
|
|
|
|
@staticmethod
|
|
def contains_regex_patterns(command, regex_parts):
|
|
command = ' '.join(command)
|
|
for pattern in regex_parts:
|
|
if not search(pattern, command):
|
|
return False
|
|
return True
|
|
|
|
@lazy_property
|
|
def similarity(self):
|
|
parts_1 = set(self.command_1)
|
|
parts_2 = set(self.command_2)
|
|
|
|
difference = parts_1 - parts_2
|
|
deviance = len(difference) / len(max(parts_1, parts_2))
|
|
return 1 - deviance
|