def ReadInstancesFromArgs(json_instances, text_instances, limit=None):
"""Reads the instances from the given file path ('-' for stdin).
Exactly one of json_instances, text_instances must be given.
Args:
json_instances: str or None, a path to a file ('-' for stdin) containing
instances in JSON format.
text_instances: str or None, a path to a file ('-' for stdin) containing
instances in text format.
limit: int, the maximum number of instances allowed in the file
Returns:
A list of instances.
Raises:
InvalidInstancesFileError: If the input file is invalid (invalid format or
contains too many/zero instances), or an improper combination of input
files was given.
"""
if (json_instances and text_instances or
not (json_instances or text_instances)):
raise InvalidInstancesFileError(
'Exactly one of --json-instances and --text-instances must be '
'specified.')
if json_instances:
data_format = 'json'
input_file = json_instances
elif text_instances:
data_format = 'text'
input_file = text_instances
with files.Open(input_file) as f:
return ReadInstances(f, data_format, limit=limit)
def Run(self, args):
with files.Open(args.md_file, 'r') as f:
render_document.RenderDocument(args.style, f, sys.stdout)