mirror of
https://github.com/mikf/gallery-dl.git
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370 lines
13 KiB
Python
370 lines
13 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2017-2019 Mike Fährmann
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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"""Command line option parsing"""
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import argparse
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import logging
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import json
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import sys
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from . import job, version
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class ConfigAction(argparse.Action):
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"""Set argparse results as config values"""
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def __call__(self, parser, namespace, values, option_string=None):
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namespace.options.append(((), self.dest, values))
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class ConfigConstAction(argparse.Action):
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"""Set argparse const values as config values"""
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def __call__(self, parser, namespace, values, option_string=None):
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namespace.options.append(((), self.dest, self.const))
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class AppendCommandAction(argparse.Action):
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def __call__(self, parser, namespace, values, option_string=None):
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items = getattr(namespace, self.dest, None) or []
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val = self.const.copy()
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val["command"] = values
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items.append(val)
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setattr(namespace, self.dest, items)
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class DeprecatedConfigConstAction(argparse.Action):
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"""Set argparse const values as config values + deprecation warning"""
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def __call__(self, parser, namespace, values, option_string=None):
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print("warning: {} is deprecated. Use {} instead.".format(
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"/".join(self.option_strings), self.choices), file=sys.stderr)
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namespace.options.append(((), self.dest, self.const))
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class ParseAction(argparse.Action):
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"""Parse <key>=<value> options and set them as config values"""
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def __call__(self, parser, namespace, values, option_string=None):
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key, _, value = values.partition("=")
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try:
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value = json.loads(value)
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except ValueError:
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pass
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key = key.split(".") # splitting an empty string becomes [""]
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namespace.options.append((key[:-1], key[-1], value))
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class Formatter(argparse.HelpFormatter):
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"""Custom HelpFormatter class to customize help output"""
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def __init__(self, *args, **kwargs):
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super().__init__(max_help_position=50, *args, **kwargs)
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def _format_action_invocation(self, action):
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opts = action.option_strings[:]
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if opts:
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if action.nargs != 0:
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args_string = self._format_args(action, "ARG")
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opts[-1] += " " + args_string
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return ', '.join(opts)
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else:
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return self._metavar_formatter(action, action.dest)(1)[0]
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def build_parser():
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"""Build and configure an ArgumentParser object"""
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parser = argparse.ArgumentParser(
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usage="%(prog)s [OPTION]... URL...",
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formatter_class=Formatter,
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add_help=False,
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)
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general = parser.add_argument_group("General Options")
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general.add_argument(
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"-h", "--help",
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action="help",
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help="Print this help message and exit",
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)
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general.add_argument(
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"--version",
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action="version", version=version.__version__,
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help="Print program version and exit",
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)
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general.add_argument(
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"-d", "--dest",
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dest="base-directory", metavar="DEST", action=ConfigAction,
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help="Destination directory",
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)
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general.add_argument(
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"-i", "--input-file",
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dest="inputfile", metavar="FILE",
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help="Download URLs found in FILE ('-' for stdin)",
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)
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general.add_argument(
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"--cookies",
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dest="cookies", metavar="FILE", action=ConfigAction,
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help="File to load additional cookies from",
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)
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general.add_argument(
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"--proxy",
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dest="proxy", metavar="URL", action=ConfigAction,
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help="Use the specified proxy",
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)
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general.add_argument(
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"--clear-cache",
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dest="clear_cache", action="store_true",
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help="Delete all cached login sessions, cookies, etc.",
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)
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output = parser.add_argument_group("Output Options")
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output.add_argument(
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"-q", "--quiet",
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dest="loglevel", default=logging.INFO,
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action="store_const", const=logging.ERROR,
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help="Activate quiet mode",
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)
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output.add_argument(
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"-v", "--verbose",
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dest="loglevel",
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action="store_const", const=logging.DEBUG,
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help="Print various debugging information",
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)
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output.add_argument(
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"-g", "--get-urls",
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dest="list_urls", action="count",
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help="Print URLs instead of downloading",
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)
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output.add_argument(
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"-j", "--dump-json",
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dest="jobtype", action="store_const", const=job.DataJob,
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help="Print JSON information",
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)
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output.add_argument(
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"-s", "--simulate",
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dest="jobtype", action="store_const", const=job.SimulationJob,
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help="Simulate data extraction; do not download anything",
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)
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output.add_argument(
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"-K", "--list-keywords",
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dest="jobtype", action="store_const", const=job.KeywordJob,
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help=("Print a list of available keywords and example values "
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"for the given URLs"),
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)
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output.add_argument(
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"--list-modules",
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dest="list_modules", action="store_true",
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help="Print a list of available extractor modules",
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)
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output.add_argument(
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"--list-extractors",
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dest="list_extractors", action="store_true",
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help=("Print a list of extractor classes "
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"with description, (sub)category and example URL"),
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)
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output.add_argument(
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"--write-log",
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dest="logfile", metavar="FILE", action=ConfigAction,
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help="Write logging output to FILE",
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)
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output.add_argument(
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"--write-unsupported",
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dest="unsupportedfile", metavar="FILE", action=ConfigAction,
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help=("Write URLs, which get emitted by other extractors but cannot "
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"be handled, to FILE"),
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)
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downloader = parser.add_argument_group("Downloader Options")
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downloader.add_argument(
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"-r", "--limit-rate",
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dest="rate", metavar="RATE", action=ConfigAction,
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help="Maximum download rate (e.g. 500k or 2.5M)",
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)
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downloader.add_argument(
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"-R", "--retries",
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dest="retries", metavar="N", type=int, action=ConfigAction,
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help=("Maximum number of retries for failed HTTP requests "
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"or -1 for infinite retries (default: 4)"),
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)
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downloader.add_argument(
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"-A", "--abort",
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dest="abort", metavar="N", type=int,
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help=("Abort extractor run after N consecutive file downloads have "
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"been skipped, e.g. if files with the same filename already "
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"exist"),
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)
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downloader.add_argument(
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"--http-timeout",
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dest="timeout", metavar="SECONDS", type=float, action=ConfigAction,
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help="Timeout for HTTP connections (defaut: 30.0)",
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)
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downloader.add_argument(
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"--sleep",
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dest="sleep", metavar="SECONDS", type=float, action=ConfigAction,
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help="Number of seconds to sleep before each download",
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)
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downloader.add_argument(
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"--no-part",
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dest="part", nargs=0, action=ConfigConstAction, const=False,
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help="Do not use .part files",
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)
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downloader.add_argument(
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"--no-mtime",
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dest="mtime", nargs=0, action=ConfigConstAction, const=False,
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help=("Do not set file modification times according to "
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"Last-Modified HTTP response headers")
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)
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downloader.add_argument(
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"--no-download",
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dest="download", nargs=0, action=ConfigConstAction, const=False,
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help=("Do not download any files")
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)
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downloader.add_argument(
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"--no-check-certificate",
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dest="verify", nargs=0, action=ConfigConstAction, const=False,
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help="Disable HTTPS certificate validation",
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)
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configuration = parser.add_argument_group("Configuration Options")
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configuration.add_argument(
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"-c", "--config",
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dest="cfgfiles", metavar="FILE", action="append",
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help="Additional configuration files",
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)
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configuration.add_argument(
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"--config-yaml",
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dest="yamlfiles", metavar="FILE", action="append",
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help=argparse.SUPPRESS,
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)
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configuration.add_argument(
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"-o", "--option",
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dest="options", metavar="OPT", action=ParseAction, default=[],
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help="Additional '<key>=<value>' option values",
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)
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configuration.add_argument(
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"--ignore-config",
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dest="load_config", action="store_false",
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help="Do not read the default configuration files",
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)
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authentication = parser.add_argument_group("Authentication Options")
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authentication.add_argument(
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"-u", "--username",
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dest="username", metavar="USER", action=ConfigAction,
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help="Username to login with",
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)
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authentication.add_argument(
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"-p", "--password",
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dest="password", metavar="PASS", action=ConfigAction,
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help="Password belonging to the given username",
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)
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authentication.add_argument(
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"--netrc",
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dest="netrc", nargs=0, action=ConfigConstAction, const=True,
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help="Enable .netrc authentication data",
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)
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selection = parser.add_argument_group("Selection Options")
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selection.add_argument(
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"--download-archive",
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dest="archive", metavar="FILE", action=ConfigAction,
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help=("Record all downloaded files in the archive file and "
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"skip downloading any file already in it."),
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)
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selection.add_argument(
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"--range",
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dest="image-range", metavar="RANGE", action=ConfigAction,
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help=("Index-range(s) specifying which images to download. "
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"For example '5-10' or '1,3-5,10-'"),
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)
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selection.add_argument(
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"--chapter-range",
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dest="chapter-range", metavar="RANGE", action=ConfigAction,
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help=("Like '--range', but applies to manga-chapters "
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"and other delegated URLs"),
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)
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selection.add_argument(
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"--filter",
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dest="image-filter", metavar="EXPR", action=ConfigAction,
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help=("Python expression controlling which images to download. "
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"Files for which the expression evaluates to False are ignored. "
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"Available keys are the filename-specific ones listed by '-K'. "
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"Example: --filter \"image_width >= 1000 and "
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"rating in ('s', 'q')\""),
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)
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selection.add_argument(
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"--chapter-filter",
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dest="chapter-filter", metavar="EXPR", action=ConfigAction,
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help=("Like '--filter', but applies to manga-chapters "
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"and other delegated URLs"),
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)
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postprocessor = parser.add_argument_group("Post-processing Options")
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postprocessor.add_argument(
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"--zip",
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dest="postprocessors",
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action="append_const", const={"name": "zip"},
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help="Store downloaded files in a ZIP archive",
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)
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postprocessor.add_argument(
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"--ugoira-conv",
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dest="postprocessors", action="append_const", const={
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"name" : "ugoira",
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"ffmpeg-args" : ("-c:v", "libvpx", "-crf", "4", "-b:v", "5000k"),
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"ffmpeg-twopass": True,
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"whitelist" : ("pixiv", "danbooru"),
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},
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help="Convert Pixiv Ugoira to WebM (requires FFmpeg)",
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)
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postprocessor.add_argument(
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"--ugoira-conv-lossless",
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dest="postprocessors", action="append_const", const={
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"name" : "ugoira",
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"ffmpeg-args" : ("-c:v", "libvpx-vp9", "-lossless", "1",
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"-pix_fmt", "yuv420p"),
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"ffmpeg-twopass": False,
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"whitelist" : ("pixiv", "danbooru"),
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},
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help="Convert Pixiv Ugoira to WebM in VP9 lossless mode",
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)
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postprocessor.add_argument(
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"--write-metadata",
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dest="postprocessors",
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action="append_const", const={"name": "metadata"},
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help="Write metadata to separate JSON files",
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)
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postprocessor.add_argument(
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"--write-tags",
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dest="postprocessors",
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action="append_const", const={"name": "metadata", "mode": "tags"},
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help="Write image tags to separate text files",
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)
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postprocessor.add_argument(
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"--mtime-from-date",
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dest="postprocessors",
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action="append_const", const={"name": "mtime"},
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help="Set file modification times according to 'date' metadata",
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)
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postprocessor.add_argument(
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"--exec",
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dest="postprocessors", metavar="CMD",
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action=AppendCommandAction, const={"name": "exec"},
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help=("Execute CMD for each downloaded file. "
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"Example: --exec 'convert {} {}.png && rm {}'"),
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)
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postprocessor.add_argument(
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"--exec-after",
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dest="postprocessors", metavar="CMD",
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action=AppendCommandAction, const={"name": "exec", "final": True},
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help=("Execute CMD after all files were downloaded successfully. "
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"Example: --exec-after 'cd {} && convert * ../doc.pdf'"),
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)
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parser.add_argument(
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"urls",
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metavar="URL", nargs="*",
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help=argparse.SUPPRESS,
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)
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return parser
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