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			251 lines
		
	
	
		
			8.6 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			251 lines
		
	
	
		
			8.6 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
from __future__ import unicode_literals
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import json
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import random
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import re
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import time
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from .common import InfoExtractor
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from ..compat import (
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    compat_str,
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    compat_urlparse,
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)
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from ..utils import (
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    ExtractorError,
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    float_or_none,
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    int_or_none,
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    parse_filesize,
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    unescapeHTML,
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    update_url_query,
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)
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class BandcampIE(InfoExtractor):
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    _VALID_URL = r'https?://.*?\.bandcamp\.com/track/(?P<title>.*)'
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    _TESTS = [{
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        'url': 'http://youtube-dl.bandcamp.com/track/youtube-dl-test-song',
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        'md5': 'c557841d5e50261777a6585648adf439',
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        'info_dict': {
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            'id': '1812978515',
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            'ext': 'mp3',
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            'title': "youtube-dl  \"'/\\\u00e4\u21ad - youtube-dl test song \"'/\\\u00e4\u21ad",
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            'duration': 9.8485,
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        },
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        '_skip': 'There is a limit of 200 free downloads / month for the test song'
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    }, {
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        'url': 'http://benprunty.bandcamp.com/track/lanius-battle',
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        'md5': '73d0b3171568232574e45652f8720b5c',
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        'info_dict': {
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            'id': '2650410135',
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            'ext': 'mp3',
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            'title': 'Lanius (Battle)',
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            'uploader': 'Ben Prunty Music',
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        },
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    }]
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    def _real_extract(self, url):
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        mobj = re.match(self._VALID_URL, url)
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        title = mobj.group('title')
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        webpage = self._download_webpage(url, title)
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        m_download = re.search(r'freeDownloadPage: "(.*?)"', webpage)
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        if not m_download:
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            m_trackinfo = re.search(r'trackinfo: (.+),\s*?\n', webpage)
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            if m_trackinfo:
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                json_code = m_trackinfo.group(1)
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                data = json.loads(json_code)[0]
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                track_id = compat_str(data['id'])
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                if not data.get('file'):
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                    raise ExtractorError('Not streamable', video_id=track_id, expected=True)
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                formats = []
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                for format_id, format_url in data['file'].items():
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                    ext, abr_str = format_id.split('-', 1)
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                    formats.append({
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                        'format_id': format_id,
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                        'url': self._proto_relative_url(format_url, 'http:'),
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                        'ext': ext,
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                        'vcodec': 'none',
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                        'acodec': ext,
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                        'abr': int_or_none(abr_str),
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                    })
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                self._sort_formats(formats)
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                return {
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                    'id': track_id,
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                    'title': data['title'],
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                    'formats': formats,
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                    'duration': float_or_none(data.get('duration')),
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                }
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            else:
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                raise ExtractorError('No free songs found')
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        download_link = m_download.group(1)
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        video_id = self._search_regex(
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            r'(?ms)var TralbumData = .*?[{,]\s*id: (?P<id>\d+),?$',
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            webpage, 'video id')
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        download_webpage = self._download_webpage(
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            download_link, video_id, 'Downloading free downloads page')
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        blob = self._parse_json(
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            self._search_regex(
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                r'data-blob=(["\'])(?P<blob>{.+?})\1', download_webpage,
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                'blob', group='blob'),
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            video_id, transform_source=unescapeHTML)
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        info = blob['digital_items'][0]
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        downloads = info['downloads']
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        track = info['title']
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        artist = info.get('artist')
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        title = '%s - %s' % (artist, track) if artist else track
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        download_formats = {}
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        for f in blob['download_formats']:
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            name, ext = f.get('name'), f.get('file_extension')
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            if all(isinstance(x, compat_str) for x in (name, ext)):
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                download_formats[name] = ext.strip('.')
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        formats = []
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        for format_id, f in downloads.items():
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            format_url = f.get('url')
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            if not format_url:
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                continue
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            # Stat URL generation algorithm is reverse engineered from
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            # download_*_bundle_*.js
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            stat_url = update_url_query(
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                format_url.replace('/download/', '/statdownload/'), {
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                    '.rand': int(time.time() * 1000 * random.random()),
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                })
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            format_id = f.get('encoding_name') or format_id
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            stat = self._download_json(
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                stat_url, video_id, 'Downloading %s JSON' % format_id,
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                transform_source=lambda s: s[s.index('{'):s.rindex('}') + 1],
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                fatal=False)
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            if not stat:
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                continue
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            retry_url = stat.get('retry_url')
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            if not isinstance(retry_url, compat_str):
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                continue
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            formats.append({
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                'url': self._proto_relative_url(retry_url, 'http:'),
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                'ext': download_formats.get(format_id),
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                'format_id': format_id,
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                'format_note': f.get('description'),
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                'filesize': parse_filesize(f.get('size_mb')),
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                'vcodec': 'none',
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            })
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        self._sort_formats(formats)
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        return {
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            'id': video_id,
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            'title': title,
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            'thumbnail': info.get('thumb_url'),
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            'uploader': info.get('artist'),
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            'artist': artist,
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            'track': track,
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            'formats': formats,
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        }
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class BandcampAlbumIE(InfoExtractor):
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    IE_NAME = 'Bandcamp:album'
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    _VALID_URL = r'https?://(?:(?P<subdomain>[^.]+)\.)?bandcamp\.com(?:/album/(?P<album_id>[^?#]+)|/?(?:$|[?#]))'
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    _TESTS = [{
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        'url': 'http://blazo.bandcamp.com/album/jazz-format-mixtape-vol-1',
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        'playlist': [
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            {
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                'md5': '39bc1eded3476e927c724321ddf116cf',
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                'info_dict': {
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                    'id': '1353101989',
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                    'ext': 'mp3',
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                    'title': 'Intro',
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                }
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            },
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            {
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                'md5': '1a2c32e2691474643e912cc6cd4bffaa',
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                'info_dict': {
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                    'id': '38097443',
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                    'ext': 'mp3',
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                    'title': 'Kero One - Keep It Alive (Blazo remix)',
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                }
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            },
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        ],
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        'info_dict': {
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            'title': 'Jazz Format Mixtape vol.1',
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            'id': 'jazz-format-mixtape-vol-1',
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            'uploader_id': 'blazo',
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        },
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        'params': {
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            'playlistend': 2
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        },
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        'skip': 'Bandcamp imposes download limits.'
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    }, {
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        'url': 'http://nightbringer.bandcamp.com/album/hierophany-of-the-open-grave',
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        'info_dict': {
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            'title': 'Hierophany of the Open Grave',
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            'uploader_id': 'nightbringer',
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            'id': 'hierophany-of-the-open-grave',
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        },
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        'playlist_mincount': 9,
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    }, {
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        'url': 'http://dotscale.bandcamp.com',
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        'info_dict': {
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            'title': 'Loom',
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            'id': 'dotscale',
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            'uploader_id': 'dotscale',
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        },
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        'playlist_mincount': 7,
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    }, {
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        # with escaped quote in title
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        'url': 'https://jstrecords.bandcamp.com/album/entropy-ep',
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        'info_dict': {
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            'title': '"Entropy" EP',
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            'uploader_id': 'jstrecords',
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            'id': 'entropy-ep',
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        },
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        'playlist_mincount': 3,
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    }, {
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        # not all tracks have songs
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        'url': 'https://insulters.bandcamp.com/album/we-are-the-plague',
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        'info_dict': {
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            'id': 'we-are-the-plague',
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            'title': 'WE ARE THE PLAGUE',
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            'uploader_id': 'insulters',
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        },
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        'playlist_count': 2,
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    }]
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    def _real_extract(self, url):
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        mobj = re.match(self._VALID_URL, url)
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        uploader_id = mobj.group('subdomain')
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        album_id = mobj.group('album_id')
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        playlist_id = album_id or uploader_id
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        webpage = self._download_webpage(url, playlist_id)
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        track_elements = re.findall(
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            r'(?s)<div[^>]*>(.*?<a[^>]+href="([^"]+?)"[^>]+itemprop="url"[^>]*>.*?)</div>', webpage)
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        if not track_elements:
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            raise ExtractorError('The page doesn\'t contain any tracks')
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        # Only tracks with duration info have songs
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        entries = [
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            self.url_result(compat_urlparse.urljoin(url, t_path), ie=BandcampIE.ie_key())
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            for elem_content, t_path in track_elements
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            if self._html_search_meta('duration', elem_content, default=None)]
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        title = self._html_search_regex(
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            r'album_title\s*:\s*"((?:\\.|[^"\\])+?)"',
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            webpage, 'title', fatal=False)
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        if title:
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            title = title.replace(r'\"', '"')
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        return {
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            '_type': 'playlist',
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            'uploader_id': uploader_id,
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            'id': playlist_id,
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            'title': title,
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            'entries': entries,
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        }
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