opensteno_qmk/lib/python/qmk/keymap.py
Erovia 26f53d38d9 Another major refactoring, add documentation
Move all useful functions to the qmk module and use the cli subcommand
as a wrapper around it.
Add both inline comments and documentation.
2020-02-15 15:19:03 -08:00

155 lines
4.7 KiB
Python

"""Functions that help you work with QMK keymaps.
"""
import os
from traceback import format_exc
import re
import glob
import qmk.path
import qmk.makefile
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
def find_keymaps(base_path, revision = "", community = False):
""" Find the available keymaps for a keyboard and revision pair.
Args:
base_path: The base path of the keyboard.
revision: The keyboard's revision.
community: Set to True for the layouts under layouts/community.
Returns:
a list with whe keymaps's names
"""
path_wildcard = os.path.join(base_path, "**", "keymap.c")
if community:
path_regex = re.compile(r"^" + re.escape(base_path) + "(\S+)" + os.path.sep + "keymap\.c")
else:
path_regex = re.compile(r"^" + re.escape(base_path) + "(?:" + re.escape(revision) + os.path.sep + ")?keymaps" + os.path.sep + "(\S+)" + os.path.sep + "keymap\.c")
names = [path_regex.sub(lambda name: name.group(1), path) for path in glob.iglob(path_wildcard, recursive = True) if path_regex.search(path)]
return names
def list_keymaps(keyboard_name):
""" List the available keymaps for a keyboard.
Args:
keyboard_name: the keyboards full name with vendor and revision if necessary, example: clueboard/66/rev3
Returns:
a list with the names of the available keymaps
"""
if os.path.sep in keyboard_name:
keyboard, revision = os.path.split(os.path.normpath(keyboard_name))
else:
keyboard = keyboard_name
revision = ""
# parse all the rules.mk files for the keyboard
rules_mk = qmk.makefile.get_rules_mk(keyboard, revision)
names = list()
if rules_mk:
# get the keymaps from the keyboard's directory
kb_base_path = os.path.join(os.getcwd(), "keyboards", keyboard) + os.path.sep
names = find_keymaps(kb_base_path, revision)
# if community layouts are supported, get them
if "LAYOUTS" in rules_mk:
for layout in rules_mk["LAYOUTS"]["value"].split():
cl_base_path = os.path.join(os.getcwd(), "layouts", "community", layout) + os.path.sep
names = names + find_keymaps(cl_base_path, revision, community = True)
names.sort()
return names