def parse_bracket_chords(line, state):
bracketed = BRACKETS_REGEX.findall(line)
bracket_words = [b[1:-1] for b in bracketed]
if ((len(bracket_words) > 1 or state['has_had_bracket_chords']) and
all([CHORD_REGEX.match(w) for w in bracket_words])):
state['has_had_bracket_chords'] = True
return bracket_words, state
return [], state
def parse_parens_chords(line, state):
parensed = PARENS_REGEX.findall(line)
parens_words = [p[1:-1] for p in parensed]
if parens_words:
line_chords = parse_line_chords(PARENS_REGEX.sub('', line))
if line_chords:
return line_chords, state
if ((len(parens_words) > 1 or state['has_had_parens_chords']) and
all([CHORD_REGEX.match(w) for w in parens_words])):
state['has_had_parens_chords'] = True
return parens_words, state
return [], state
def parse_line_chords(line):
words = line.split()
if all([CHORD_REGEX.match(w) for w in words]):
return words
return []
def get_lab_chord(c):
match = CHORD_REGEX.match(c.lower())
root = match.group('root')
chord = match.group('chord')
return '%s%s' % (root.upper(), CHORD_SUBSET_MAP[chord])