igitar/src/chordpro/renderers/text.py

33 lines
1.6 KiB
Python

import os
def render(song, verse_upper=False):
"""Render a song to a text file"""
nl = os.linesep
bl = nl + nl
rendered_verses = []
for verse in song.verse_order:
verse_title = verse.title.upper() if verse_upper else verse.title
rendered_lines = [verse_title + ':']
for line in verse.lines:
rendered_chords = []
rendered_syllables = []
for word_counter, word in enumerate(line.words):
is_last_word = (word_counter + 1) == len(line.words)
for syll_counter, syllable in enumerate(word.syllables):
is_last_syllable = (syll_counter + 1) == len(word.syllables)
padding = max(len(syllable.syllable), len(syllable.chord or ''))
if is_last_syllable and not is_last_word:
padding += 1
elif syllable.chord and not syllable.syllable:
padding += 1
rendered_chords.append('{chord:^{padding}}'.format(chord=syllable.chord or '', padding=padding))
rendered_syllables.append('{syllable:<{padding}}'.format(syllable=syllable.syllable,
padding=padding))
rendered_lines.append(''.join(rendered_chords))
rendered_lines.append(''.join(rendered_syllables))
rendered_verses.append(nl.join(rendered_lines))
title = song.metadata.get('title') or 'Song'
artist = song.metadata.get('artist') or song.metadata.get('composer') or ''
return nl.join([title, artist, '', bl.join(rendered_verses)]) + nl