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# Licensed under a 3-clause BSD style license - see LICENSE.rst
# -*- coding: utf-8 -*-
"""
Contains commands for dealing with exploded and imploded forms.
"""
import os
import asdf
from .main import Command
from .. import AsdfFile
__all__ = ['to_yaml']
class ToYaml(Command):
@classmethod
def setup_arguments(cls, subparsers):
parser = subparsers.add_parser(
str("to_yaml"), help="Convert as ASDF file to pure YAML.",
description="""Convert all data to inline YAML so the ASDF
file contains no binary blocks.""")
parser.add_argument(
'filename', nargs=1,
help="""The ASDF file to convert to YAML.""")
parser.add_argument(
"--output", "-o", type=str, nargs="?",
help="""The name of the output file. If not provided, it
will be the name of the input file with a '.yaml' extension.""")
parser.add_argument(
"--resolve-references", "-r", action="store_true",
help="""Resolve all references and store them directly in
the output file.""")
parser.set_defaults(func=cls.run)
return parser
@classmethod
def run(cls, args):
return to_yaml(args.filename[0], args.output, args.resolve_references)
def to_yaml(input, output=None, resolve_references=False):
"""
Implode a given ASDF file, which may reference external data, back
into a single ASDF file.
Parameters
----------
input : str or file-like object
The input file.
output : str of file-like object
The output file.
resolve_references : bool, optional
If `True` resolve all external references before saving.
"""
if output is None:
base, ext = os.path.splitext(input)
output = base + '.yaml'
with asdf.open(input) as ff:
ff2 = AsdfFile(ff)
if resolve_references:
ff2.resolve_references()
ff2.write_to(output, all_array_storage='inline')
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