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#!/usr/bin/python |
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# -*- coding: utf-8 -*- |
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import datetime |
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import os |
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import re |
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from pathlib import Path |
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from stat import ST_CTIME, ST_MTIME, ST_SIZE |
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from typing import Generator |
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from saucenao.files.constraint import Constraint |
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class Filter: |
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""" |
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Filter to apply constraints for multiple metadata entries of the files. |
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Obviously the files have to exist or they'll automatically get removed. |
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Returns a generator object |
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""" |
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_directory = None |
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_file_system_objects = None |
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def __init__(self, assert_is_folder=False, assert_is_file=False, creation_date=None, modified_date=None, name=None, |
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file_type=None, size=None): |
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"""Initializing function |
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:type assert_is_folder: bool |
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:type assert_is_file: bool |
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:type creation_date: Constraint |
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:type modified_date: Constraint |
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:type name: Constraint |
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:type file_type: Constraint |
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:type size: Constraint |
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""" |
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self._filter_assert_is_folder = assert_is_folder |
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self._filter_assert_is_file = assert_is_file |
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self._filter_creation_date = creation_date |
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self._filter_modified_date = modified_date |
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self._filter_name = name |
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self._filter_file_type = file_type |
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self._filter_file_size = size |
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@property |
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def file_system_objects(self): |
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"""Property for file system objects |
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:return: |
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""" |
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if self._file_system_objects is None: |
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if self._directory: |
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return os.listdir(self._directory) |
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else: |
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return [] |
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return self._file_system_objects |
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@staticmethod |
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def _get_timestamp_from_datestring(date_string) -> float: |
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"""Convert the given date string to timestamp |
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:param date_string: |
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:return: |
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""" |
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if re.match(r'\d+.\d+.\d+ \d+:\d+:\d+', date_string): |
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return datetime.datetime.strptime(date_string, "%d.%m.%Y %H:%M:%S").timestamp() |
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elif re.match(r'\d+.\d+.\d+ \d+:\d+', date_string): |
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return datetime.datetime.strptime(date_string, "%d.%m.%Y %H:%M").timestamp() |
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elif re.match(r'\d+.\d+.\d+', date_string): |
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return datetime.datetime.strptime(date_string, "%d.%m.%Y").timestamp() |
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else: |
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raise AttributeError("The date doesn't fit the format: d.m.Y[ H:M[:S]]") |
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def apply(self, directory='', file_system_objects=None) -> Generator[str, None, None]: |
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"""Apply the filter values to the given FSOs(File System Objects) |
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:type directory: str |
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:type file_system_objects: list|tuple|Generator |
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:return: |
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""" |
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self._directory = directory |
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self._file_system_objects = file_system_objects |
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for file_system_object in self.file_system_objects: |
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abs_path = os.path.join(directory, file_system_object) |
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# check if the FSO exists, else we can't access the metadata |
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if not os.path.exists(abs_path): |
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continue |
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# check if the FSO is a file |
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if self._filter_assert_is_file and not os.path.isfile(abs_path): |
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continue |
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# check if the FSO is a folder |
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if self._filter_assert_is_folder and not os.path.isdir(abs_path): |
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continue |
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file_stats = os.stat(abs_path) |
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# check if the FSO creation date matches the constraint |
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if self._filter_creation_date and not self.apply_creation_date(file_stats): |
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continue |
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# check if the FSO modification date matches the constraint |
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if self._filter_modified_date and not self.apply_modified_date(file_stats): |
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continue |
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# check if the FSO name matches the constraint |
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if self._filter_name and not self._filter_name.cmp_func(file_system_object, self._filter_name.value): |
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continue |
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# check if the FSO suffix matches the constraint |
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if self._filter_file_type and not self._filter_file_type.cmp_func(Path(abs_path).suffix, |
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self._filter_file_type.value): |
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continue |
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# check if the FSO size matches the constraint |
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if self._filter_file_size and not self._filter_file_size.cmp_func(file_stats[ST_SIZE], |
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self._filter_file_size.value): |
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continue |
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yield file_system_object |
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def apply_creation_date(self, file_stats: os.stat_result) -> bool: |
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"""Apply creation date option |
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:param file_stats: |
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:return: |
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""" |
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creation_time = file_stats[ST_CTIME] |
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expected_creation_time = self._get_timestamp_from_datestring(self._filter_creation_date.value) |
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if self._filter_creation_date.cmp_func(creation_time, expected_creation_time): |
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return True |
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else: |
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return False |
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def apply_modified_date(self, file_stats: os.stat_result) -> bool: |
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"""Apply modified date option |
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:param file_stats: |
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:return: |
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""" |
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modified_time = file_stats[ST_MTIME] |
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expected_modified_time = self._get_timestamp_from_datestring(self._filter_modified_date.value) |
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if self._filter_modified_date.cmp_func(modified_time, expected_modified_time): |
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return True |
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else: |
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return False |
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DaRealFreak /
saucenao
