def main():
from argparse import ArgumentParser
from json import dump
from os import getcwd, path
from sys import stdin, stdout
from urllib import pathname2url
from webvtt import parse
from pyld.jsonld import JsonLdProcessor
aparser = ArgumentParser(description="webvtt2rdf converter")
aparser.add_argument("-i", "--input", type=file, default=stdin)
aparser.add_argument("-f", "--flatten", action="store_true")
aparser.add_argument("-v", "--video", type=str,
default="http://example.org/video.mp4")
aparser.add_argument("-F", "--format", choices=["json-ld", "nquads"],
default="nquads")
args = aparser.parse_args()
if args.input is stdin:
base = "stdin:"
else:
base = "file://" + pathname2url(path.join(getcwd(), args.input.name))
jsonld = webvtt2jsonld(parse(args.input),
base,
args.video,
flatten=args.flatten,
)
if args.format == "json-ld":
dump(jsonld, stdout, indent=4); print "\n"
else:
proc = JsonLdProcessor()
print proc.to_nquads(proc.to_rdf(jsonld, None))