108 lines
2.5 KiB
Python
108 lines
2.5 KiB
Python
from json import loads
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from re import sub
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from textwrap import dedent
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from . import hints
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def dump_scalar(entry: hints.JSONDataScalar) -> str:
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match entry:
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case None:
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return "null\n"
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case True:
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return "true\n"
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case False:
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return "false\n"
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case _:
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return f"{entry:s}\n"
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def dump(obj: dict[str, hints.JSONDataScalar | list[hints.JSONDataScalar]]) -> str:
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ret = ""
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for key, value in obj.items():
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ret += key
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ret += ":"
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match value:
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case list() as entries:
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ret += "\n"
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for entry in entries:
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ret += f" - {dump_scalar(entry)}"
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case entry:
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ret += f" {dump_scalar(entry)}"
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return ret
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def load(content: str) -> hints.JSONData:
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"""parse subset of yaml into ``JSONData``
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>>> from pprint import pprint
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>>> yaml = '''
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... key1: str
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... key2: "str"
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... key3: 1
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... key4: 2.3
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... key5: 2e12
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... key6: null
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... key7: true
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... key8: false
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... key9:
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... - 1
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... - 23.2
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... key10:
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... - str
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... - "str"
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... '''
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>>> yaml_parsed = load(yaml)
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>>> compare = {
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... 'key1': 'str',
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... 'key2': 'str',
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... 'key3': 1,
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... 'key4': 2.3,
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... 'key5': 2e12,
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... 'key6': None,
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... 'key7': True,
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... 'key8': False,
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... 'key9': [1, 23.2],
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... 'key10': ['str', 'str'],
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... }
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>>> {k: yaml_parsed.get(k, None) for k in compare if compare[k] != yaml_parsed[k]}
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{}
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"""
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ret = {}
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key = None
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value = None
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for line in sub(r":[\s\n]*", ":\n ", dedent(content).strip()).splitlines():
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if line.endswith(":"):
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if key:
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ret[key] = value
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value = None
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key = line.removesuffix(":")
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elif line.startswith(" -"):
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value = value or []
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try:
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parsed = loads(line.removeprefix(" -").strip())
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except:
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parsed = loads('"' + line.removeprefix(" -").strip() + '"')
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value.append(parsed)
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else:
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try:
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value = loads(line.strip())
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except:
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value = loads('"' + line.strip() + '"')
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if key:
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ret[key] = value
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value = None
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return ret
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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