def getTrackInfo(track, artist):
"""
Returns a dictionary with possible keys:
'title', 'artist', 'album', 'trackPosition', 'picture'
If no match found, returns empty dictionary
"""
track = track.encode('utf-8')
artist = artist.encode('utf-8')
try:
url = 'http://ws.audioscrobbler.com/2.0/?'
url += urllib.urlencode({ 'method' :'track.getinfo',
'api_key' :LASTFM_API_KEY,
'artist' :artist,
'track' :track,
'autocorrect' :1 })
ret = getSourceCode(url)
#except urllib2.HTTPError:
except AttributeError:
return {}
else:
info = {}
tree = xml.etree.ElementTree.XML(ret)
if tree is not None:
tree = tree.find('track')
info['title'] = tree.find('name').text
info['artist'] = tree.find('artist').find('name').text
try:
tree = tree.find('album')
info['album'] = tree.find('title').text
info['trackPosition'] = tree.attrib['position']
info['picture'] = getPicture(tree.findall('image')[-1].text)
except AttributeError:
pass
return info
def __getEncryptedLyrics(trackUid, lyricId, checkSum, nonExplicit, authToken):
url = "http://www.pandora.com/services/ajax/?"
url += urllib.urlencode({ 'method' :'lyrics.getLyrics',
'trackUid' :trackUid,
'checkSum' :checkSum,
'nonExplicit' :nonExplicit,
'authToken' :authToken })
ret = getSourceCode(url)
decryptionKey = re.search('var k="([^"]*)"', ret).group(1)
# functions in javascript can contain ", which makes python dictionary
# parsing throw errors, workaround by replacing them out
ret = re.sub('(function[^,]*)', '0', ret).replace('\\u00',r'\x')
# use ast.literal_eval vs. eval because it's safer
encrypted = ast.literal_eval(ret)
encryptedLyrics= encrypted['lyrics']
return __decryptLyrics(encryptedLyrics, decryptionKey)
def getLyrics(track, artist):
"""
Returns a dictionary with possible keys:
lyrics
If no match found, returns empty dictionary
"""
track = track.encode('utf-8')
artist = artist.encode('utf-8')
url = 'http://www.pandora.com/music/song/%s/%s' % (urllib.quote_plus(artist.lower()),
urllib.quote_plus(track.lower()))
ret = getSourceCode(url)
try:
trackUid = regex_trackUid.search(ret).group(1)
intermMatch = regex_lyricIdCheckSum.search(ret)
lyricId = intermMatch.group(1)
checkSum = intermMatch.group(2)
nonExplicit = 'false'
authToken = 'null'
except AttributeError:
return {}
else:
return __getEncryptedLyrics(trackUid, lyricId, checkSum, nonExplicit, authToken)
def getAlbumInfo(album, artist):
"""
Returns a dictionary with possible keys:
'album', 'artist', 'picture', 'totalTracks'
If no match found, returns empty dictionary
"""
if (album, artist) in albumCache:
return albumCache[(album,artist)]
album = album.encode('utf-8')
artist = artist.encode('utf-8')
try:
url = 'http://ws.audioscrobbler.com/2.0/?'
url += urllib.urlencode({ 'method' :'album.getinfo',
'api_key' :LASTFM_API_KEY,
'album' :album,
'artist' :artist,
'autocorrect' :1 })
ret = getSourceCode(url)
except urllib2.HTTPError:
return {}
else:
info = {}
tree = xml.etree.ElementTree.XML(ret)
if tree is not None:
tree = tree.find('album')
info['album'] = tree.find('name').text
info['artist'] = tree.find('artist').text
try:
info['picture'] = getPicture(tree.findall('image')[-1].text)
except AttributeError:
pass
tree = tree.find('tracks')
info['totalTracks'] = str(len(list(tree)))
albumCache[(album,artist)] = info
return info
