qmk-dactyl-manuform-a/keyboards/ergodox_ez/util/keymap_beautifier/KeymapBeautifier.py

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#!/usr/bin/env python
import argparse
import pycparser
import re
class KeymapBeautifier:
justify_toward_center = False
filename_in = None
filename_out = None
output_layout = None
output = None
column_max_widths = {}
KEY_ALIASES = {
"KC_TRANSPARENT": "_______",
"KC_TRNS": "_______",
"KC_NO": "XXXXXXX",
}
KEYMAP_START = 'const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {\n'
KEYMAP_END = '};\n'
KEYMAP_START_REPLACEMENT = "const int keymaps[]={\n"
KEY_CHART = """
/*
* ,--------------------------------------------------. ,--------------------------------------------------.
* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | | 38 | 39 | 40 | 41 | 42 | 43 | 44 |
* |--------+------+------+------+------+------+------| |------+------+------+------+------+------+--------|
* | 7 | 8 | 9 | 10 | 11 | 12 | 13 | | 45 | 46 | 47 | 48 | 49 | 50 | 51 |
* |--------+------+------+------+------+------| | | |------+------+------+------+------+--------|
* | 14 | 15 | 16 | 17 | 18 | 19 |------| |------| 52 | 53 | 54 | 55 | 56 | 57 |
* |--------+------+------+------+------+------| 26 | | 58 |------+------+------+------+------+--------|
* | 20 | 21 | 22 | 23 | 24 | 25 | | | | 59 | 60 | 61 | 62 | 63 | 64 |
* `--------+------+------+------+------+-------------' `-------------+------+------+------+------+--------'
* | 27 | 28 | 29 | 30 | 31 | | 65 | 66 | 67 | 68 | 69 |
* `----------------------------------' `----------------------------------'
* ,-------------. ,-------------.
* | 32 | 33 | | 70 | 71 |
* ,------+------+------| |------+------+------.
* | | | 34 | | 72 | | |
* | 35 | 36 |------| |------| 74 | 75 |
* | | | 37 | | 73 | | |
* `--------------------' `--------------------'
*/
"""
KEY_COORDINATES = {
'LAYOUT_ergodox': [
# left hand
(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6),
(1,0), (1,1), (1,2), (1,3), (1,4), (1,5), (1,6),
(2,0), (2,1), (2,2), (2,3), (2,4), (2,5),
(3,0), (3,1), (3,2), (3,3), (3,4), (3,5), (3,6),
(4,0), (4,1), (4,2), (4,3), (4,4),
# left thumb
(5,5), (5,6),
(6,6),
(7,4), (7,5), (7,6),
# right hand
(8,0), (8,1), (8,2), (8,3), (8,4), (8,5), (8,6),
(9,0), (9,1), (9,2), (9,3), (9,4), (9,5), (9,6),
(10,1), (10,2), (10,3), (10,4), (10,5), (10,6),
(11,0), (11,1), (11,2), (11,3), (11,4), (11,5), (11,6),
(12,2), (12,3), (12,4), (12,5), (12,6),
# right thumb
(13,0), (13,1),
(14,0),
(15,0), (15,1), (15,2)
],
'LAYOUT_ergodox_pretty': [
# left hand and right hand
(0,0), (0,1), (0,2), (0,3), (0,4), (0,5), (0,6), (0,7), (0,8), (0,9), (0,10), (0,11), (0,12), (0,13),
(1,0), (1,1), (1,2), (1,3), (1,4), (1,5), (1,6), (1,7), (1,8), (1,9), (1,10), (1,11), (1,12), (1,13),
(2,0), (2,1), (2,2), (2,3), (2,4), (2,5), (2,8), (2,9), (2,10), (2,11), (2,12), (2,13),
(3,0), (3,1), (3,2), (3,3), (3,4), (3,5), (3,6), (3,7), (3,8), (3,9), (3,10), (3,11), (3,12), (3,13),
(4,0), (4,1), (4,2), (4,3), (4,4), (4,9), (4,10), (4,11), (4,12), (4,13),
# left thumb and right thumb
(5,5), (5,6), (5,7), (5,8),
(6,6), (6,7),
(7,4), (7,5), (7,6), (7,7), (7,8), (7,9)
],
}
current_converted_KEY_COORDINATES = []
# each column is aligned within each group (tuples of row indexes are inclusive)
KEY_ROW_GROUPS = {
'LAYOUT_ergodox': [(0,4),(5,7),(8,12),(13,15)],
'LAYOUT_ergodox_pretty': [(0,7)],
#'LAYOUT_ergodox_pretty': [(0,5),(6,7)],
#'LAYOUT_ergodox_pretty': [(0,3),(4,4),(5,7)],
#'LAYOUT_ergodox_pretty': [(0,4),(5,7)],
}
INDEX_CONVERSTION_LAYOUT_ergodox_pretty_to_LAYOUT_ergodox = [
0, 1, 2, 3, 4, 5, 6, 38,39,40,41,42,43,44,
7, 8, 9,10,11,12,13, 45,46,47,48,49,50,51,
14,15,16,17,18,19, 52,53,54,55,56,57,
20,21,22,23,24,25,26, 58,59,60,61,62,63,64,
27,28,29,30,31, 65,66,67,68,69,
32,33, 70,71,
34, 72,
35,36,37, 73,74,75,
]
def index_conversion_map_reversed(self, conversion_map):
return [conversion_map.index(i) for i in range(len(conversion_map))]
def __init__(self, source_code = "", output_layout="LAYOUT_ergodox", justify_toward_center = False):
self.output_layout = output_layout
self.justify_toward_center = justify_toward_center
# determine the conversion map
#if input_layout == self.output_layout:
# conversion_map = [i for i in range(len(self.INDEX_CONVERSTION_LAYOUT_ergodox_pretty_to_LAYOUT_ergodox))]
#conversion_map = self.INDEX_CONVERSTION_LAYOUT_ergodox_pretty_to_LAYOUT_ergodox
if self.output_layout == "LAYOUT_ergodox_pretty":
index_conversion_map = self.index_conversion_map_reversed(self.INDEX_CONVERSTION_LAYOUT_ergodox_pretty_to_LAYOUT_ergodox)
else:
index_conversion_map = list(range(len(self.INDEX_CONVERSTION_LAYOUT_ergodox_pretty_to_LAYOUT_ergodox)))
self.current_converted_KEY_COORDINATES = [
self.KEY_COORDINATES[self.output_layout][index_conversion_map[i]]
for i in range(len(self.KEY_COORDINATES[self.output_layout]))
]
self.output = self.beautify_source_code(source_code)
def beautify_source_code(self, source_code):
# to keep it simple for the parser, we only use the parser to parse the key definition part
src = {
"before": [],
"keys": [],
"after": [],
}
current_section = "before"
for line in source_code.splitlines(True):
if current_section == 'before' and line == self.KEYMAP_START:
src[current_section].append("\n")
current_section = 'keys'
src[current_section].append(self.KEYMAP_START_REPLACEMENT)
continue
elif current_section == 'keys' and line == self.KEYMAP_END:
src[current_section].append(self.KEYMAP_END)
current_section = 'after'
continue
src[current_section].append(line)
output_lines = src['before'] + self.beautify_keys_section("".join(src['keys'])) + src['after']
return "".join(output_lines)
def beautify_keys_section(self, src):
parsed = self.parser(src)
layer_output = []
keymap = parsed.children()[0]
layers = keymap[1]
for layer in layers.init.exprs:
input_layout = layer.expr.name.name
key_symbols = self.layer_expr(layer)
# re-order keys from input_layout to regular layout
if input_layout == "LAYOUT_ergodox_pretty":
key_symbols = [key_symbols[i] for i in self.index_conversion_map_reversed(self.INDEX_CONVERSTION_LAYOUT_ergodox_pretty_to_LAYOUT_ergodox)]
padded_key_symbols = self.pad_key_symbols(key_symbols, input_layout)
layer_identifier = None
if hasattr(layer.name[0], "value"):
layer_identifier = layer.name[0].value
elif hasattr(layer.name[0], "name"):
layer_identifier = layer.name[0].name
else:
raise AttributeError("Layer is missing both index and name (e.g., [BASE] = LAYOUT_ergodox(...))")
current_pretty_output_layer = self.pretty_output_layer(layer_identifier, padded_key_symbols)
# strip trailing spaces from padding
layer_output.append(re.sub(r" +\n", "\n", current_pretty_output_layer))
return [self.KEYMAP_START + "\n",
self.KEY_CHART + "\n",
",\n\n".join(layer_output) + "\n",
self.KEYMAP_END + "\n"]
def get_row_group(self, row):
for low, high in self.KEY_ROW_GROUPS[self.output_layout]:
if low <= row <= high:
return (low, high)
raise Exception("Cannot find row groups in KEY_ROW_GROUPS")
def calculate_column_max_widths(self, key_symbols):
# calculate the max width for each column
self.column_max_widths = {}
for i in range(len(key_symbols)):
row_index, column_index = self.current_converted_KEY_COORDINATES[i]
row_group = self.get_row_group(row_index)
if (row_group, column_index) in self.column_max_widths:
self.column_max_widths[(row_group, column_index)] = max(self.column_max_widths[(row_group, column_index)], len(key_symbols[i]))
else:
self.column_max_widths[(row_group, column_index)] = len(key_symbols[i])
def pad_key_symbols(self, key_symbols, input_layout, just='left'):
self.calculate_column_max_widths(key_symbols)
padded_key_symbols = []
# pad each key symbol
for i in range(len(key_symbols)):
key = key_symbols[i]
# look up column coordinate to determine number of spaces to pad
row_index, column_index = self.current_converted_KEY_COORDINATES[i]
row_group = self.get_row_group(row_index)
if just == 'left':
padded_key_symbols.append(key.ljust(self.column_max_widths[(row_group, column_index)]))
else:
padded_key_symbols.append(key.rjust(self.column_max_widths[(row_group, column_index)]))
return padded_key_symbols
layer_keys_pointer = 0
layer_keys = None
def grab_next_n_columns(self, n_columns, input_layout, layer_keys = None, from_beginning = False):
if layer_keys:
self.layer_keys = layer_keys
if from_beginning:
self.layer_keys_pointer = 0
begin = self.layer_keys_pointer
end = begin + n_columns
return self.layer_keys[self.layer_keys_pointer-n_keys:self.layer_keys_pointer]
key_coordinates_counter = 0
def get_padded_line(self, source_keys, key_from, key_to, just="left"):
if just == "right":
keys = [k.strip().rjust(len(k)) for k in source_keys[key_from:key_to]]
else:
keys = [k for k in source_keys[key_from:key_to]]
from_row, from_column = self.KEY_COORDINATES[self.output_layout][self.key_coordinates_counter]
row_group = self.get_row_group(from_row)
self.key_coordinates_counter += key_to - key_from
columns_before_key_from = sorted([col for row, col in self.KEY_COORDINATES[self.output_layout] if row == from_row and col < from_column])
# figure out which columns in this row needs padding; only pad empty columns to the right of an existing column
columns_to_pad = { c: True for c in range(from_column) }
if columns_before_key_from:
for c in range(max(columns_before_key_from)+1):
columns_to_pad[c] = False
# for rows with fewer columns that don't start with column 0, we need to insert leading spaces
spaces = 0
for c, v in columns_to_pad.items():
if not v:
continue
if (row_group,c) in self.column_max_widths:
spaces += self.column_max_widths[(row_group,c)] + len(", ")
else:
spaces += 0
return " " * spaces + ", ".join(keys) + ","
def pretty_output_layer(self, layer, keys):
self.key_coordinates_counter = 0
if self.output_layout == "LAYOUT_ergodox":
formatted_key_symbols = """
// left hand
{}
{}
{}
{}
{}
// left thumb
{}
{}
{}
// right hand
{}
{}
{}
{}
{}
// right thumb
{}
{}
{}
""".format(
# left hand
self.get_padded_line(keys, 0, 7, just="left"),
self.get_padded_line(keys, 7, 14, just="left"),
self.get_padded_line(keys, 14, 20, just="left"),
self.get_padded_line(keys, 20, 27, just="left"),
self.get_padded_line(keys, 27, 32, just="left"),
# left thumb
self.get_padded_line(keys, 32, 34, just="left"),
self.get_padded_line(keys, 34, 35, just="left"),
self.get_padded_line(keys, 35, 38, just="left"),
# right hand
self.get_padded_line(keys, 38, 45, just="left"),
self.get_padded_line(keys, 45, 52, just="left"),
self.get_padded_line(keys, 52, 58, just="left"),
self.get_padded_line(keys, 58, 65, just="left"),
self.get_padded_line(keys, 65, 70, just="left"),
# right thumb
self.get_padded_line(keys, 70, 72, just="left"),
self.get_padded_line(keys, 72, 73, just="left"),
self.get_padded_line(keys, 73, 76, just="left"),
)
elif self.output_layout == "LAYOUT_ergodox_pretty":
left_half_justification = "right" if self.justify_toward_center else "left"
formatted_key_symbols = """
{} {}
{} {}
{} {}
{} {}
{} {}
{} {}
{} {}
{} {}
""".format(
self.get_padded_line(keys, 0, 7, just=left_half_justification), self.get_padded_line(keys, 38, 45, just="left"),
self.get_padded_line(keys, 7, 14, just=left_half_justification), self.get_padded_line(keys, 45, 52, just="left"),
self.get_padded_line(keys, 14, 20, just=left_half_justification), self.get_padded_line(keys, 52, 58, just="left"),
self.get_padded_line(keys, 20, 27, just=left_half_justification), self.get_padded_line(keys, 58, 65, just="left"),
self.get_padded_line(keys, 27, 32, just=left_half_justification), self.get_padded_line(keys, 65, 70, just="left"),
self.get_padded_line(keys, 32, 34, just=left_half_justification), self.get_padded_line(keys, 70, 72, just="left"),
self.get_padded_line(keys, 34, 35, just=left_half_justification), self.get_padded_line(keys, 72, 73, just="left"),
self.get_padded_line(keys, 35, 38, just=left_half_justification), self.get_padded_line(keys, 73, 76, just="left"),
)
else:
formatted_key_symbols = ""
# rid of the trailing comma
formatted_key_symbols = formatted_key_symbols[0:len(formatted_key_symbols)-2] + "\n"
s = "[{}] = {}({})".format(layer, self.output_layout, formatted_key_symbols)
return s
# helper functions for pycparser
def parser(self, src):
src = self.comment_remover(src)
return pycparser.CParser().parse(src)
def comment_remover(self, text):
# remove comments since pycparser cannot deal with them
# credit: https://stackoverflow.com/a/241506
def replacer(match):
s = match.group(0)
if s.startswith('/'):
return " " # note: a space and not an empty string
else:
return s
pattern = re.compile(
r'//.*?$|/\*.*?\*/|\'(?:\\.|[^\\\'])*\'|"(?:\\.|[^\\"])*"',
re.DOTALL | re.MULTILINE
)
return re.sub(pattern, replacer, text)
def function_expr(self, f):
name = f.name.name
args = []
for arg in f.args.exprs:
if type(arg) is pycparser.c_ast.Constant:
args.append(arg.value)
elif type(arg) is pycparser.c_ast.ID:
args.append(arg.name)
elif type(arg) is pycparser.c_ast.FuncCall:
args.append(self.function_expr(arg))
return "{}({})".format(name, ",".join(args))
def key_expr(self, raw):
if type(raw) is pycparser.c_ast.ID:
if raw.name in self.KEY_ALIASES:
return self.KEY_ALIASES[raw.name]
return raw.name
elif type(raw) is pycparser.c_ast.FuncCall:
return self.function_expr(raw)
def layer_expr(self, layer):
transformed = [self.key_expr(k) for k in layer.expr.args.exprs]
return transformed
if __name__ == "__main__":
parser = argparse.ArgumentParser(description="Beautify keymap.c downloaded from ErgoDox-Ez Configurator for easier customization.")
parser.add_argument("input_filename", help="input file: c source code file that has the layer keymaps")
parser.add_argument("-o", "--output-filename", help="output file: beautified c filename. If not given, output to STDOUT.")
parser.add_argument("-p", "--pretty-output-layout", action="store_true", help="use LAYOUT_ergodox_pretty for output instead of LAYOUT_ergodox")
parser.add_argument("-c", "--justify-toward-center", action="store_true", help="for LAYOUT_ergodox_pretty, align right for the left half, and align left for the right half. Default is align left for both halves.")
args = parser.parse_args()
if args.pretty_output_layout:
output_layout="LAYOUT_ergodox_pretty"
else:
output_layout="LAYOUT_ergodox"
with open(args.input_filename) as f:
source_code = f.read()
result = KeymapBeautifier(source_code, output_layout=output_layout, justify_toward_center=args.justify_toward_center).output
if args.output_filename:
with open(args.output_filename, "w") as f:
f.write(result)
else:
print(result)