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"""Functions that help you work with QMK keymaps.
"""
import json
import logging
import os
from traceback import format_exc
import qmk.path
from qmk.errors import NoSuchKeyboardError
# The `keymap.c` template to use when a keyboard doesn't have its own
DEFAULT_KEYMAP_C = """#include QMK_KEYBOARD_H
/* THIS FILE WAS GENERATED!
*
* This file was generated by qmk-compile-json. You may or may not want to
* edit it directly.
*/
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
__KEYMAP_GOES_HERE__
};
"""
def template(keyboard):
"""Returns the `keymap.c` template for a keyboard.
If a template exists in `keyboards/<keyboard>/templates/keymap.c` that
text will be used instead of `DEFAULT_KEYMAP_C`.
Args:
keyboard
The keyboard to return a template for.
"""
template_name = 'keyboards/%s/templates/keymap.c' % keyboard
if os.path.exists(template_name):
with open(template_name, 'r') as fd:
return fd.read()
return DEFAULT_KEYMAP_C
def generate(keyboard, layout, layers):
"""Returns a keymap.c for the specified keyboard, layout, and layers.
Args:
keyboard
The name of the keyboard
layout
The LAYOUT macro this keymap uses.
layers
An array of arrays describing the keymap. Each item in the inner array should be a string that is a valid QMK keycode.
"""
layer_txt = []
for layer_num, layer in enumerate(layers):
if layer_num != 0:
layer_txt[-1] = layer_txt[-1] + ','
layer_keys = ', '.join(layer)
layer_txt.append('\t[%s] = %s(%s)' % (layer_num, layout, layer_keys))
keymap = '\n'.join(layer_txt)
keymap_c = template(keyboard)
return keymap_c.replace('__KEYMAP_GOES_HERE__', keymap)
def write(keyboard, keymap, layout, layers):
"""Generate the `keymap.c` and write it to disk.
Returns the filename written to.
Args:
keyboard
The name of the keyboard
keymap
The name of the keymap
layout
The LAYOUT macro this keymap uses.
layers
An array of arrays describing the keymap. Each item in the inner array should be a string that is a valid QMK keycode.
"""
keymap_c = generate(keyboard, layout, layers)
keymap_path = qmk.path.keymap(keyboard)
keymap_dir = os.path.join(keymap_path, keymap)
keymap_file = os.path.join(keymap_dir, 'keymap.c')
if not os.path.exists(keymap_dir):
os.makedirs(keymap_dir)
with open(keymap_file, 'w') as keymap_fd:
keymap_fd.write(keymap_c)
return keymap_file
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