Add script to extract lines from Hypotactic

#!/usr/bin/python3

# -*- coding: utf-8 -*-

import argparse

import itertools

import allzweckmesser as azm

def main(hypotactic_dir, outfile, limit=0, title='Lines', meters=tuple()):

    corpus = azm.corpus.HypotacticCorpus.from_directory(hypotactic_dir)

    line_generator = corpus.get_lines_with_meter(meters)

    if limit:

        line_generator = itertools.islice(line_generator, limit)

    with open(outfile, 'w') as f:

        corpus.save_lines(f, line_generator, title=title)

def parse_args_and_main():

    d = 'Extract lines from a Hypotactic corpus'

    parser = argparse.ArgumentParser(description=d)

    parser.add_argument('--limit', '-l', type=int, default=0,

                        help='Maximum number of lines to extract')

    parser.add_argument('--meters', '-m', nargs='+',

                        help='Meters of the lines to extract')

    parser.add_argument('--title', '-t', default='Lines',

                        help='Title of the resulting HTML document')

    parser.add_argument('hypotactic_dir',

                        help='Top level directory of the Hypotactic corpus')

    parser.add_argument('outfile', help='File to save the lines in')

    args = parser.parse_args()

    main(**vars(args))

if __name__ == '__main__':

    parse_args_and_main()