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#!/usr/bin/env python3
# Copyright (C) 2021-2022 Klaus Aehlig. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import json
import sys
from typing import Any, Dict, List, cast
def is_simple(entry: Any) -> bool:
if isinstance(entry, list):
return len(cast(List[Any], entry)) == 0
if isinstance(entry, dict):
return len(cast(Dict[str, Any], entry)) == 0
return True
def is_short(entry: Any, indent: int) -> bool:
return len(json.dumps(entry)) + indent < 80
def hdumps(entry: Any, *, _current_indent: int = 0) -> str:
if entry:
if is_short(entry, _current_indent):
return json.dumps(entry)
if isinstance(entry, list):
result: str = "[ " + hdumps(cast(Any, entry[0]),
_current_indent=_current_indent + 2)
entries: List[Any] = entry[1:] # explicit type hint
for x in entries:
result += "\n" + " " * _current_indent + ", "
result += hdumps(x, _current_indent=_current_indent + 2)
result += "\n" + " " * _current_indent + "]"
return result
if isinstance(entry, dict):
result: str = "{ "
is_first: bool = True
keys = cast(Dict[str, Any], entry).keys() # explicit type hint
for k in keys:
key_entry: Any = entry[k] # explicit type hint
if not is_first:
result += "\n" + " " * _current_indent + ", "
result += json.dumps(k) + ":"
if is_simple(key_entry):
result += " " + json.dumps(key_entry)
elif is_short(key_entry,
_current_indent + len(json.dumps(k)) + 4):
result += " " + json.dumps(key_entry)
else:
result += "\n" + " " * _current_indent + " "
result += hdumps(key_entry,
_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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