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
|
const fs = require('fs')
const path = require('path')
const filter = require('lodash/filter')
const flatten = require('lodash/flatten')
const get = require('lodash/get')
const keyBy = require('lodash/keyBy')
const map = require('lodash/map')
const uniq = require('lodash/uniq')
const { renderTable } = require('./layout')
const behaviours = JSON.parse(fs.readFileSync(path.join(__dirname, 'data/zmk-behaviors.json')))
const behavioursByBind = keyBy(behaviours, 'code')
function encodeBindValue(parsed) {
const params = (parsed.params || []).map(encodeBindValue)
const paramString = params.length > 0 ? `(${params.join(',')})` : ''
return parsed.value + paramString
}
function encodeKeyBinding(parsed) {
const { value, params } = parsed
return `${value} ${params.map(encodeBindValue).join(' ')}`.trim()
}
function encodeKeymap(parsedKeymap) {
return Object.assign({}, parsedKeymap, {
layers: parsedKeymap.layers.map(layer => layer.map(encodeKeyBinding))
})
}
function getBehavioursUsed(keymap) {
const keybinds = flatten(keymap.layers)
return uniq(map(keybinds, 'value'))
}
/**
* Parse a bind string into a tree of values and parameters
* @param {String} binding
* @returns {Object}
*/
function parseKeyBinding(binding) {
const paramsPattern = /\((.+)\)/
function parse(code) {
const value = code.replace(paramsPattern, '')
const params = get(code.match(paramsPattern), '[1]', '').split(',')
.map(s => s.trim())
.filter(s => s.length > 0)
.map(parse)
return { value, params }
}
const value = binding.match(/^(&.+?)\b/)[1]
const params = filter(binding.replace(/^&.+?\b\s*/, '')
.split(' '))
.map(parse)
return { value, params }
}
function parseKeymap (keymap) {
return Object.assign({}, keymap, {
layers: keymap.layers.map(layer => {
return layer.map(parseKeyBinding)
})
})
}
const header = `
/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
/* THIS FILE WAS GENERATED!
*
* This file was generated automatically. You may or may not want to
* edit it directly.
*/
#include <behaviors.dtsi>
#include <dt-bindings/zmk/keys.h>
`
function generateKeymap (layout, keymap) {
const encoded = encodeKeymap(keymap)
return {
code: generateKeymapCode(layout, keymap, encoded),
json: generateKeymapJSON(layout, keymap, encoded)
}
}
function generateKeymapCode (layout, keymap, encoded) {
const { layer_names: names = [] } = keymap
const behaviourHeaders = flatten(getBehavioursUsed(keymap).map(
bind => get(behavioursByBind, [bind, 'includes'], [])
))
const layers = encoded.layers.map((layer, i) => {
const name = i === 0 ? 'default_layer' : `layer_${names[i] || i}`
const rendered = renderTable(layout, layer, {
linePrefix: '',
columnSeparator: ' '
})
return `
${name} {
bindings = <
${rendered}
>;
};
`
})
const keymapOut = `${header}
${behaviourHeaders.join('\n')}
/ {
keymap {
compatible = "zmk,keymap";
${layers.join('')}
};
};
`
return keymapOut
}
function generateKeymapJSON (layout, keymap, encoded) {
const base = JSON.stringify(Object.assign({}, encoded, { layers: null }), null, 2)
const layers = encoded.layers.map(layer => {
const rendered = renderTable(layout, layer, {
useQuotes: true,
linePrefix: ' '
})
return `[\n${rendered}\n ]`
})
return base.replace('"layers": null', `"layers": [\n ${layers.join(', ')}\n ]`)
}
module.exports = {
encodeKeymap,
parseKeymap,
generateKeymap
}
|