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"""Functions that help you work with QMK keymaps.
"""
from pathlib import Path
from qmk.keyboard import rules_mk
import qmk.path
# 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 json2c. 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_file = Path('keyboards/%s/templates/keymap.c' % keyboard)
if template_file.exists():
return template_file.read_text()
return DEFAULT_KEYMAP_C
def _strip_any(keycode):
"""Remove ANY() from a keycode.
"""
if keycode.startswith('ANY(') and keycode.endswith(')'):
keycode = keycode[4:-1]
return keycode
def is_keymap_dir(keymap):
"""Return True if Path object `keymap` has a keymap file inside.
"""
for file in ('keymap.c', 'keymap.json'):
if (keymap / file).is_file():
return True
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 = map(_strip_any, layer)
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_file = qmk.path.keymap(keyboard) / 'keymap.c'
keymap_file.parent.mkdir(parents=True, exist_ok=True)
keymap_file.write_text(keymap_c)
return keymap_file
def locate_keymap(keyboard, keymap):
"""Returns the path to a keymap for a specific keyboard.
"""
if not qmk.path.is_keyboard(keyboard):
raise KeyError('Invalid keyboard: ' + repr(keyboard))
# Check the keyboard folder first, last match wins
checked_dirs = ''
keymap_path = ''
for dir in keyboard.split('/'):
if checked_dirs:
checked_dirs = '/'.join((checked_dirs, dir))
else:
checked_dirs = dir
keymap_dir = Path('keyboards') / checked_dirs / 'keymaps'
if (keymap_dir / keymap / 'keymap.c').exists():
keymap_path = keymap_dir / keymap / 'keymap.c'
if (keymap_dir / keymap / 'keymap.json').exists():
keymap_path = keymap_dir / keymap / 'keymap.json'
if keymap_path:
return keymap_path
# Check community layouts as a fallback
rules = rules_mk(keyboard)
if "LAYOUTS" in rules:
for layout in rules["LAYOUTS"].split():
community_layout = Path('layouts/community') / layout / keymap
if community_layout.exists():
if (community_layout / 'keymap.json').exists():
return community_layout / 'keymap.json'
if (community_layout / 'keymap.c').exists():
return community_layout / 'keymap.c'
def list_keymaps(keyboard):
""" List the available keymaps for a keyboard.
Args:
keyboard: the keyboards full name with vendor and revision if necessary, example: clueboard/66/rev3
Returns:
a set with the names of the available keymaps
"""
# parse all the rules.mk files for the keyboard
rules = rules_mk(keyboard)
names = set()
if rules:
# qmk_firmware/keyboards
keyboards_dir = Path('keyboards')
# path to the keyboard's directory
kb_path = keyboards_dir / keyboard
# walk up the directory tree until keyboards_dir
# and collect all directories' name with keymap.c file in it
while kb_path != keyboards_dir:
keymaps_dir = kb_path / "keymaps"
if keymaps_dir.exists():
names = names.union([keymap.name for keymap in keymaps_dir.iterdir() if is_keymap_dir(keymap)])
kb_path = kb_path.parent
# if community layouts are supported, get them
if "LAYOUTS" in rules:
for layout in rules["LAYOUTS"].split():
cl_path = Path('layouts/community') / layout
if cl_path.exists():
names = names.union([keymap.name for keymap in cl_path.iterdir() if is_keymap_dir(keymap)])
return sorted(names)
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