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#!/usr/bin/env python3
import json
import sys
from typing import Any, Dict, List, Union
JSON = Union[str, int, float, bool, None, Dict[str, 'JSON'], List['JSON']]
def is_simple(entry: JSON) -> bool:
if isinstance(entry, list):
return len(entry) == 0
if isinstance(entry, dict):
return len(entry) == 0
return True
def is_short(entry: Any, indent: int) -> bool:
return (len(json.dumps(entry)) + indent) < 80
def hdumps(entry: JSON, *, _current_indent: int = 0) -> str:
if is_short(entry, _current_indent):
return json.dumps(entry)
if isinstance(entry, list) and entry:
result: str = "[ " + hdumps(entry[0],
_current_indent=_current_indent + 2)
for x in entry[1:]:
result += "\n" + " " * _current_indent + ", "
result += hdumps(x, _current_indent=_current_indent + 2)
result += "\n" + " " * _current_indent + "]"
return result
if isinstance(entry, dict) and entry:
result: str = "{ "
is_first: bool = True
for k in entry.keys():
if not is_first:
result += "\n" + " " * _current_indent + ", "
result += json.dumps(k) + ":"
if is_simple(entry[k]):
result += " " + json.dumps(entry[k])
elif is_short(entry[k], _current_indent + len(json.dumps(k)) + 4):
result += " " + json.dumps(entry[k])
else:
result += "\n" + " " * _current_indent + " "
result += hdumps(entry[k], _current_indent=_current_indent + 2)
is_first = False
result += "\n" + " " * _current_indent + "}"
return result
return json.dumps(entry)
if __name__ == "__main__":
data = json.load(sys.stdin)
print(hdumps(data))
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