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"""Class that pretty-prints QMK info.json files.
"""
import json
from decimal import Decimal
class InfoJSONEncoder(json.JSONEncoder):
"""Custom encoder to make info.json's a little nicer to work with.
"""
container_types = (list, tuple, dict)
indentation_char = " "
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.indentation_level = 0
if not self.indent:
self.indent = 4
def encode(self, obj):
"""Encode JSON objects for QMK.
"""
if isinstance(obj, Decimal):
if obj == int(obj): # I can't believe Decimal objects don't have .is_integer()
return int(obj)
return float(obj)
elif isinstance(obj, (list, tuple)):
if self._primitives_only(obj):
return "[" + ", ".join(self.encode(element) for element in obj) + "]"
else:
self.indentation_level += 1
output = [self.indent_str + self.encode(element) for element in obj]
self.indentation_level -= 1
return "[\n" + ",\n".join(output) + "\n" + self.indent_str + "]"
elif isinstance(obj, dict):
if obj:
if self.indentation_level == 4:
# These are part of a layout, put them on a single line.
return "{ " + ", ".join(f"{self.encode(key)}: {self.encode(element)}" for key, element in sorted(obj.items())) + " }"
else:
self.indentation_level += 1
output = [self.indent_str + f"{json.dumps(key)}: {self.encode(value)}" for key, value in sorted(obj.items(), key=self.sort_root_dict)]
self.indentation_level -= 1
return "{\n" + ",\n".join(output) + "\n" + self.indent_str + "}"
else:
return "{}"
else:
return super().encode(obj)
def _primitives_only(self, obj):
"""Returns true if the object doesn't have any container type objects (list, tuple, dict).
"""
if isinstance(obj, dict):
obj = obj.values()
return not any(isinstance(element, self.container_types) for element in obj)
def sort_root_dict(self, key):
"""Forces layout to the back of the sort order.
"""
key = key[0]
if self.indentation_level == 1:
if key == 'manufacturer':
return '10keyboard_name'
elif key == 'keyboard_name':
return '11keyboard_name'
elif key == 'maintainer':
return '12maintainer'
elif key in ('height', 'width'):
return '40' + str(key)
elif key == 'community_layouts':
return '97community_layouts'
elif key == 'layout_aliases':
return '98layout_aliases'
elif key == 'layouts':
return '99layouts'
else:
return '50' + str(key)
return key
@property
def indent_str(self):
return self.indentation_char * (self.indentation_level * self.indent)
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