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# wikiget - CLI tool for downloading files from Wikimedia sites
# Copyright (C) 2018-2023 Cody Logan
# SPDX-License-Identifier: GPL-3.0-or-later
#
# Wikiget is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Wikiget is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Wikiget. If not, see <https://www.gnu.org/licenses/>.
from __future__ import annotations
import fileinput
import logging
from typing import TYPE_CHECKING
from urllib.parse import unquote, urlparse
import wikiget
from wikiget.exceptions import ParseError
from wikiget.file import File
from wikiget.validations import valid_file
if TYPE_CHECKING:
from argparse import Namespace
logger = logging.getLogger(__name__)
def get_dest(dl: str, args: Namespace) -> File:
"""Parse the given download target for filename, destination, and site host.
:param dl: download target (filename or URL)
:type dl: str
:param args: command-line arguments and their values
:type args: argparse.Namespace
:raises ParseError: the target was unable to be parsed as a valid file
:return: a File object representing the target, destination, and site
:rtype: wikiget.file.File
"""
url = urlparse(dl)
if url.netloc:
filename = url.path
site_name = url.netloc
if args.site is not wikiget.DEFAULT_SITE:
# this will work even if the user specifies 'commons.wikimedia.org' since
# we're comparing objects instead of values ('is not' vs. '!=')
logger.warning("Target is a URL; ignoring site specified with --site")
else:
filename = dl
site_name = args.site
file_match = valid_file(filename)
# check if this is a valid file
if file_match and file_match.group(1):
# has File:/Image: prefix and extension
filename = file_match.group(2)
else:
# no file extension and/or prefix, probably an article
msg = f"Could not parse input '{dl}' as a file"
raise ParseError(msg)
filename = unquote(filename) # remove URL encoding for special characters
dest = args.output or filename
return File(filename, dest, site_name)
def read_batch_file(batch_file: str) -> dict[int, str]:
"""Parse a batch file or stdin for valid input.
The contents are returned as a dictionary with line numbers for keys and line
contents for values. Any blank lines or lines starting with '#' are skipped.
:param batch_file: name of the file to parse or "-" for stdin
:type batch_file: str
:return: a dictionary representation of the input contents
:rtype: dict[int, str]
"""
dl_dict = {}
if batch_file == "-":
logger.info("Using stdin for batch download")
else:
logger.info("Using file '%s' for batch download", batch_file)
with fileinput.input(batch_file) as fd:
# read the file into memory and process each line as we go
for line_num, line in enumerate(fd, start=1):
line_s = line.strip()
# ignore blank lines and lines starting with "#" (for comments)
if line_s and not line_s.startswith("#"):
dl_dict[line_num] = line_s
return dl_dict
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