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#!/usr/bin/env python2
"""Youtubedlg module responsible for parsing the options. """
import os.path
from .utils import remove_shortcuts
class OptionHolder(object):
"""Simple data structure that holds informations for the given option.
Args: name (string): Option name. Must be a valid option name from the optionsmanager.OptionsManager class. See optionsmanager.OptionsManager load_default() method.
flag (string): The option command line switch. See https://github.com/rg3/youtube-dl/#options
default_value (any): The option default value. Must be the same type with the corresponding option from the optionsmanager.OptionsManager class.
requirements (list): The requirements for the given option. This argument is a list of strings with the name of all the options that this specific option needs. For example 'subs_lang' needs the 'write_subs' option to be enabled.
"""
def __init__(self, name, flag, default_value, requirements=None): self.name = name self.flag = flag self.requirements = requirements self.default_value = default_value
def is_boolean(self): """Returns True if the option is a boolean switch else False. """ return type(self.default_value) is bool
def check_requirements(self, options_dict): """Check if the required options are enabled.
Args: options_dict (dictionary): Dictionary with all the options.
Returns: True if any of the required options is enabled else False.
"""
if self.requirements is None: return True
return any([options_dict[req] for req in self.requirements])
class OptionsParser(object):
"""Parse optionsmanager.OptionsManager options.
This class is responsible for turning some of the youtube-dlg options to youtube-dl command line options.
"""
def __init__(self): self._ydl_options = [ OptionHolder('playlist_start', '--playlist-start', 1), OptionHolder('playlist_end', '--playlist-end', 0), OptionHolder('max_downloads', '--max-downloads', 0), OptionHolder('username', '-u', ''), OptionHolder('password', '-p', ''), OptionHolder('video_password', '--video-password', ''), OptionHolder('retries', '-R', 10), OptionHolder('proxy', '--proxy', ''), OptionHolder('user_agent', '--user-agent', ''), OptionHolder('referer', '--referer', ''), OptionHolder('ignore_errors', '-i', False), OptionHolder('write_description', '--write-description', False), OptionHolder('write_info', '--write-info-json', False), OptionHolder('write_thumbnail', '--write-thumbnail', False), OptionHolder('min_filesize', '--min-filesize', 0), OptionHolder('max_filesize', '--max-filesize', 0), OptionHolder('write_all_subs', '--all-subs', False), OptionHolder('write_auto_subs', '--write-auto-sub', False), OptionHolder('write_subs', '--write-sub', False), OptionHolder('keep_video', '-k', False), OptionHolder('restrict_filenames', '--restrict-filenames', False), OptionHolder('save_path', '-o', ''), OptionHolder('embed_subs', '--embed-subs', False, ['write_auto_subs', 'write_subs']), OptionHolder('to_audio', '-x', False), OptionHolder('audio_format', '--audio-format', '', ['to_audio']), OptionHolder('video_format', '-f', '0'), OptionHolder('subs_lang', '--sub-lang', '', ['write_subs']), OptionHolder('audio_quality', '--audio-quality', '5', ['to_audio']) ]
def parse(self, options_dictionary): """Parse optionsmanager.OptionsManager options.
Parses the given options to youtube-dl command line arguments.
Args: options_dictionary (dictionary): Dictionary with all the options.
Returns: List of strings with all the youtube-dl command line options.
"""
options_list = ['--newline']
# Create a copy of options_dictionary # We don't want to edit the original options dictionary # and change some of the options values like 'save_path' etc.. options_dict = options_dictionary.copy()
self._build_savepath(options_dict) self._build_videoformat(options_dict) self._build_filesizes(options_dict)
# Parse basic youtube-dl command line options for option in self._ydl_options: if option.check_requirements(options_dict): value = options_dict[option.name]
if value != option.default_value: options_list.append(option.flag)
if not option.is_boolean(): options_list.append(str(value))
# Parse cmd_args for option in options_dict['cmd_args'].split(): options_list.append(option)
return options_list
def _build_savepath(self, options_dict): """Build the save path.
We use this method to build the value of the 'save_path' option and store it back to the options dictionary.
Args: options_dict (dictionary): Copy of the original options dictionary.
"""
save_path = remove_shortcuts(options_dict['save_path'])
if options_dict['output_format'] == 'id': save_path = os.path.join(save_path, '%(id)s.%(ext)s') elif options_dict['output_format'] == 'title': save_path = os.path.join(save_path, '%(title)s.%(ext)s') else: save_path = os.path.join(save_path, options_dict['output_template'])
options_dict['save_path'] = save_path
def _build_videoformat(self, options_dict): """Build the video format.
We use this method to build the value of the 'video_format' option and store it back to the options dictionary.
Args: options_dict (dictionary): Copy of the original options dictionary.
"""
if options_dict['video_format'] != '0' and options_dict['second_video_format'] != '0': options_dict['video_format'] = options_dict['video_format'] + '+' + options_dict['second_video_format']
def _build_filesizes(self, options_dict): """Build the filesize options values.
We use this method to build the values of 'min_filesize' and 'max_filesize' options and store them back to options dictionary.
Args: options_dict (dictionary): Copy of the original options dictionary.
"""
if options_dict['min_filesize']: options_dict['min_filesize'] = str(options_dict['min_filesize']) + options_dict['min_filesize_unit']
if options_dict['max_filesize']: options_dict['max_filesize'] = str(options_dict['max_filesize']) + options_dict['max_filesize_unit']
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