def replace_pronunciations(target, source, env):
"""
Takes two pronunciation files, and replaces pronunciations in the first with those from the second,
for overlapping words. Returns a new vocabulary file and pronunciation file.
"""
with meta_open(source[0].rstr()) as old_fd, meta_open(source[1].rstr()) as repl_fd:
old = Pronunciations(old_fd)
repl = Pronunciations(repl_fd)
logging.info("Old pronunciations: %s", old)
logging.info("Replacement pronunciations: %s", repl)
old.replace_by(repl)
logging.info("New pronunciations: %s", old)
with meta_open(target[0].rstr(), "w") as voc_ofd, meta_open(target[1].rstr(), "w") as pron_ofd:
voc_ofd.write(old.format_vocabulary())
pron_ofd.write(old.format())
return None
