qmk_firmware/lib/python/qmk/keyboard.py

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"""Functions that help us work with keyboards.
"""
from array import array
from math import ceil
from pathlib import Path
import os
from glob import glob
from qmk.c_parse import parse_config_h_file
from qmk.json_schema import json_load
from qmk.makefile import parse_rules_mk_file
from qmk.path import is_keyboard, under_qmk_firmware
BOX_DRAWING_CHARACTERS = {
"unicode": {
"tl": "",
"tr": "",
"bl": "",
"br": "",
"v": "",
"h": "",
},
"ascii": {
"tl": " ",
"tr": " ",
"bl": "|",
"br": "|",
"v": "|",
"h": "_",
},
}
base_path = os.path.join(os.getcwd(), "keyboards") + os.path.sep
def find_keyboard_from_dir():
"""Returns a keyboard name based on the user's current directory.
"""
relative_cwd = under_qmk_firmware()
if relative_cwd and len(relative_cwd.parts) > 1 and relative_cwd.parts[0] == 'keyboards':
# Attempt to extract the keyboard name from the current directory
current_path = Path('/'.join(relative_cwd.parts[1:]))
if 'keymaps' in current_path.parts:
# Strip current_path of anything after `keymaps`
keymap_index = len(current_path.parts) - current_path.parts.index('keymaps') - 1
current_path = current_path.parents[keymap_index]
if is_keyboard(current_path):
return str(current_path)
def keyboard_folder(keyboard):
"""Returns the actual keyboard folder.
This checks aliases and DEFAULT_FOLDER to resolve the actual path for a keyboard.
"""
aliases = json_load(Path('data/mappings/keyboard_aliases.json'))
if keyboard in aliases:
keyboard = aliases[keyboard].get('target', keyboard)
rules_mk_file = Path(base_path, keyboard, 'rules.mk')
if rules_mk_file.exists():
rules_mk = parse_rules_mk_file(rules_mk_file)
keyboard = rules_mk.get('DEFAULT_FOLDER', keyboard)
if not is_keyboard(keyboard):
raise ValueError(f'Invalid keyboard: {keyboard}')
return keyboard
def _find_name(path):
"""Determine the keyboard name by stripping off the base_path and rules.mk.
"""
return path.replace(base_path, "").replace(os.path.sep + "rules.mk", "")
def keyboard_completer(prefix, action, parser, parsed_args):
"""Returns a list of keyboards for tab completion.
"""
return list_keyboards()
def list_keyboards():
"""Returns a list of all keyboards.
"""
# We avoid pathlib here because this is performance critical code.
kb_wildcard = os.path.join(base_path, "**", "rules.mk")
paths = [path for path in glob(kb_wildcard, recursive=True) if 'keymaps' not in path]
return sorted(set(map(resolve_keyboard, map(_find_name, paths))))
def resolve_keyboard(keyboard):
cur_dir = Path('keyboards')
rules = parse_rules_mk_file(cur_dir / keyboard / 'rules.mk')
while 'DEFAULT_FOLDER' in rules and keyboard != rules['DEFAULT_FOLDER']:
keyboard = rules['DEFAULT_FOLDER']
rules = parse_rules_mk_file(cur_dir / keyboard / 'rules.mk')
return keyboard
def config_h(keyboard):
"""Parses all the config.h files for a keyboard.
Args:
keyboard: name of the keyboard
Returns:
a dictionary representing the content of the entire config.h tree for a keyboard
"""
config = {}
cur_dir = Path('keyboards')
keyboard = Path(resolve_keyboard(keyboard))
for dir in keyboard.parts:
cur_dir = cur_dir / dir
config = {**config, **parse_config_h_file(cur_dir / 'config.h')}
return config
def rules_mk(keyboard):
"""Get a rules.mk for a keyboard
Args:
keyboard: name of the keyboard
Returns:
a dictionary representing the content of the entire rules.mk tree for a keyboard
"""
cur_dir = Path('keyboards')
keyboard = Path(resolve_keyboard(keyboard))
rules = parse_rules_mk_file(cur_dir / keyboard / 'rules.mk')
for i, dir in enumerate(keyboard.parts):
cur_dir = cur_dir / dir
rules = parse_rules_mk_file(cur_dir / 'rules.mk', rules)
return rules
def render_layout(layout_data, render_ascii, key_labels=None):
"""Renders a single layout.
"""
textpad = [array('u', ' ' * 200) for x in range(50)]
style = 'ascii' if render_ascii else 'unicode'
box_chars = BOX_DRAWING_CHARACTERS[style]
for key in layout_data:
x = ceil(key.get('x', 0) * 4)
y = ceil(key.get('y', 0) * 3)
w = ceil(key.get('w', 1) * 4)
h = ceil(key.get('h', 1) * 3)
if key_labels:
label = key_labels.pop(0)
if label.startswith('KC_'):
label = label[3:]
else:
label = key.get('label', '')
label_len = w - 2
label_leftover = label_len - len(label)
if len(label) > label_len:
label = label[:label_len]
label_blank = ' ' * label_len
label_border = box_chars['h'] * label_len
label_middle = label + ' '*label_leftover # noqa: yapf insists there be no whitespace around *
top_line = array('u', box_chars['tl'] + label_border + box_chars['tr'])
lab_line = array('u', box_chars['v'] + label_middle + box_chars['v'])
mid_line = array('u', box_chars['v'] + label_blank + box_chars['v'])
bot_line = array('u', box_chars['bl'] + label_border + box_chars['br'])
textpad[y][x:x + w] = top_line
textpad[y + 1][x:x + w] = lab_line
for i in range(h - 3):
textpad[y + i + 2][x:x + w] = mid_line
textpad[y + h - 1][x:x + w] = bot_line
lines = []
for line in textpad:
if line.tounicode().strip():
lines.append(line.tounicode().rstrip())
return '\n'.join(lines)
def render_layouts(info_json, render_ascii):
"""Renders all the layouts from an `info_json` structure.
"""
layouts = {}
for layout in info_json['layouts']:
layout_data = info_json['layouts'][layout]['layout']
layouts[layout] = render_layout(layout_data, render_ascii)
return layouts