def validate_lyrics(value):
try:
from songs.parse import parse_lyrics
from songs.transpose import transpose_lyrics
lyrics = parse_lyrics(value)
transpose_lyrics(lyrics, 0)
except SyntaxError, m:
raise ValidationError(u'Lyrics syntax is incorrect: ' + unicode(m))
def song(request, song, mode):
if mode == SongMode.DISPLAY:
template_name = 'songs/song.html'
else:
template_name = 'songs/song_print.html'
external_links = [(x.artist, x.artist.website) for x in
ArtistContribution.objects.filter(song=song).select_related('artist') if
x.artist.website != None and len(x.artist.website) > 0
] + [(x.band, x.band.website) for x in
BandContribution.objects.filter(song=song).select_related('band') if
x.band.website != None and len(x.band.website) > 0
]
if request.method == "GET" and "t" in request.GET:
try:
t = int(request.GET["t"])
if t >= 0 and t < 12:
transposition = t
else:
transposition = 0
except ValueError:
transposition = 0
else:
transposition = 0
trans_up = (transposition + 1) % 12
trans_down = (transposition + 11) % 12
lyrics = parse_lyrics(song.lyrics)
extra = False
for paragraph in lyrics:
for text, chords, is_indented, are_chords_extra in paragraph:
if are_chords_extra:
extra = True
break
if extra:
break
context = {
'song': song,
'section': 'songs',
'triggers': mode == SongMode.DISPLAY,
'extra': extra,
'trans': transposition,
'trans_up': trans_up,
'trans_down': trans_down,
'capo': song.capo(),
'lyrics': render_lyrics(
transpose_lyrics(
lyrics,
transposition
),
mode
),
'textContributions': ArtistContribution.objects.filter(song=song, texted=True),
'translationContributions': ArtistContribution.objects.filter(song=song, translated=True),
'musicContributions': ArtistContribution.objects.filter(song=song, composed=True),
'performanceContributions': ArtistContribution.objects.filter(song=song, performed=True),
'bandContributions': BandContribution.objects.filter(song=song, performed=True),
'external_links': external_links,
}
return render(request, template_name, context)