summaryrefslogtreecommitdiffstats
path: root/lib/python/qmk/json_encoders.py
blob: 40a5c1dea8e7b11fccdede4407681b083417d4ee (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
"""Class that pretty-prints QMK info.json files.
"""
import json
from decimal import Decimal

newline = '\n'


class QMKJSONEncoder(json.JSONEncoder):
    """Base class for all QMK JSON encoders.
    """
    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_decimal(self, obj):
        """Encode a decimal object.
        """
        if obj == int(obj):  # I can't believe Decimal objects don't have .is_integer()
            return int(obj)

        return float(obj)

    def encode_list(self, obj):
        """Encode a list-like object.
        """
        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 + "]"

    def encode(self, obj):
        """Encode keymap.json objects for QMK.
        """
        if isinstance(obj, Decimal):
            return self.encode_decimal(obj)

        elif isinstance(obj, (list, tuple)):
            return self.encode_list(obj)

        elif isinstance(obj, dict):
            return self.encode_dict(obj)

        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)

    @property
    def indent_str(self):
        return self.indentation_char * (self.indentation_level * self.indent)


class InfoJSONEncoder(QMKJSONEncoder):
    """Custom encoder to make info.json's a little nicer to work with.
    """
    def encode_dict(self, obj):
        """Encode info.json dictionaries.
        """
        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_dict)]
                self.indentation_level -= 1
                return "{\n" + ",\n".join(output) + "\n" + self.indent_str + "}"
        else:
            return "{}"

    def sort_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 == 'community_layouts':
                return '97community_layouts'

            elif key == 'layout_aliases':
                return '98layout_aliases'

            elif key == 'layouts':
                return '99layouts'

            else:
                return '50' + str(key)

        return key


class KeymapJSONEncoder(QMKJSONEncoder):
    """Custom encoder to make keymap.json's a little nicer to work with.
    """
    def encode_dict(self, obj):
        """Encode dictionary objects for keymap.json.
        """
        if obj:
            self.indentation_level += 1
            output_lines = [f"{self.indent_str}{json.dumps(key)}: {self.encode(value)}" for key, value in sorted(obj.items(), key=self.sort_dict)]
            output = ',\n'.join(output_lines)
            self.indentation_level -= 1

            return f"{{\n{output}\n{self.indent_str}}}"

        else:
            return "{}"

    def encode_list(self, obj):
        """Encode a list-like object.
        """
        if self.indentation_level == 2:
            indent_level = self.indentation_level + 1
            # We have a list of keycodes
            layer = [[]]

            for key in obj:
                if key == 'JSON_NEWLINE':
                    layer.append([])
                else:
                    if isinstance(key, dict):
                        # We have a macro

                        # TODO: Add proper support for nicely formatting keymap.json macros
                        layer[-1].append(f'{self.encode(key)}')
                    else:
                        layer[-1].append(f'"{key}"')

            layer = [f"{self.indent_str*indent_level}{', '.join(row)}" for row in layer]

            return f"{self.indent_str}[\n{newline.join(layer)}\n{self.indent_str*self.indentation_level}]"

        elif 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 + "]"

    def sort_dict(self, key):
        """Sorts the hashes in a nice way.
        """
        key = key[0]

        if self.indentation_level == 1:
            if key == 'version':
                return '00version'

            elif key == 'author':
                return '01author'

            elif key == 'notes':
                return '02notes'

            elif key == 'layers':
                return '98layers'

            elif key == 'documentation':
                return '99documentation'

            else:
                return '50' + str(key)

        return key