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authorJack Humbert <jack.humb@gmail.com>2017-08-23 22:29:07 -0400
committerGitHub <noreply@github.com>2017-08-23 22:29:07 -0400
commitd2ff66a985b938e87fffe55c1d9f1dc55e356f91 (patch)
tree561b3e203033849573a17f5ac6248077ab687676 /keyboards/ergodox_ez/util
parent7260fc3eef98fb7b0e2ed24d3d0d14cf2e613000 (diff)
Creates a layouts/ folder for keymaps shared between keyboards (#1609)
* include variables and .h files as pp directives * start layout compilation * split ergodoxes up * don't compile all layouts for everything * might seg fault * reset layouts variable * actually reset layouts * include rules.mk instead * remove includes from rules.mk * update variable setting * load visualizer from path * adds some more examples * adds more layouts * more boards added * more boards added * adds documentation for layouts * use lowercase names for LAYOUT_ * add layout.json files for each layout * add community folder, default keymaps for layouts * touch-up default layouts * touch-up layouts, some keyboard rules.mk * update documentation for layouts * fix up serial/i2c switches
Diffstat (limited to 'keyboards/ergodox_ez/util')
-rw-r--r--keyboards/ergodox_ez/util/compile_keymap.py710
-rw-r--r--keyboards/ergodox_ez/util/readme.md3
2 files changed, 713 insertions, 0 deletions
diff --git a/keyboards/ergodox_ez/util/compile_keymap.py b/keyboards/ergodox_ez/util/compile_keymap.py
new file mode 100644
index 0000000000..7076a6ecb2
--- /dev/null
+++ b/keyboards/ergodox_ez/util/compile_keymap.py
@@ -0,0 +1,710 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""Compiler for keymap.c files
+
+This scrip will generate a keymap.c file from a simple
+markdown file with a specific layout.
+
+Usage:
+ python compile_keymap.py INPUT_PATH [OUTPUT_PATH]
+"""
+from __future__ import division
+from __future__ import print_function
+from __future__ import absolute_import
+from __future__ import unicode_literals
+
+import os
+import io
+import re
+import sys
+import json
+import unicodedata
+import collections
+import itertools as it
+
+PY2 = sys.version_info.major == 2
+
+if PY2:
+ chr = unichr
+
+
+KEYBOARD_LAYOUTS = {
+ # These map positions in the parsed layout to
+ # positions in the KEYMAP MATRIX
+ 'ergodox_ez': [
+ [ 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 ],
+ ]
+}
+
+ROW_INDENTS = {
+ 'ergodox_ez': [0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 5, 0, 6, 0, 4, 0]
+}
+
+BLANK_LAYOUTS = [
+# Compact Layout
+"""
+.------------------------------------.------------------------------------.
+| | | | | | | | | | | | | | |
+!-----+----+----+----+----+----------!-----+----+----+----+----+----+-----!
+| | | | | | | | | | | | | | |
+!-----+----+----+----x----x----! ! !----x----x----+----+----+-----!
+| | | | | | |-----!-----! | | | | | |
+!-----+----+----+----x----x----! ! !----x----x----+----+----+-----!
+| | | | | | | | | | | | | | |
+'-----+----+----+----+----+----------'----------+----+----+----+----+-----'
+ | | | | | | ! | | | | |
+ '------------------------' '------------------------'
+ .-----------. .-----------.
+ | | | ! | |
+ .-----+-----+-----! !-----+-----+-----.
+ ! ! | | ! | ! !
+ ! ! !-----! !-----! ! !
+ | | | | ! | | |
+ '-----------------' '-----------------'
+""",
+
+# Wide Layout
+"""
+.---------------------------------------------. .---------------------------------------------.
+| | | | | | | | ! | | | | | | |
+!-------+-----+-----+-----+-----+-------------! !-------+-----+-----+-----+-----+-----+-------!
+| | | | | | | | ! | | | | | | |
+!-------+-----+-----+-----x-----x-----! ! ! !-----x-----x-----+-----+-----+-------!
+| | | | | | |-------! !-------! | | | | | |
+!-------+-----+-----+-----x-----x-----! ! ! !-----x-----x-----+-----+-----+-------!
+| | | | | | | | ! | | | | | | |
+'-------+-----+-----+-----+-----+-------------' '-------------+-----+-----+-----+-----+-------'
+ | | | | | | ! | | | | |
+ '------------------------------' '------------------------------'
+ .---------------. .---------------.
+ | | | ! | |
+ .-------+-------+-------! !-------+-------+-------.
+ ! ! | | ! | ! !
+ ! ! !-------! !-------! ! !
+ | | | | ! | | |
+ '-----------------------' '-----------------------'
+""",
+]
+
+
+DEFAULT_CONFIG = {
+ "keymaps_includes": [
+ "keymap_common.h",
+ ],
+ 'filler': "-+.'!:x",
+ 'separator': "|",
+ 'default_key_prefix': ["KC_"],
+}
+
+
+SECTIONS = [
+ 'layout_config',
+ 'layers',
+]
+
+
+# Markdown Parsing
+
+ONELINE_COMMENT_RE = re.compile(r"""
+ ^ # comment must be at the start of the line
+ \s* # arbitrary whitespace
+ // # start of the comment
+ (.*) # the comment
+ $ # until the end of line
+""", re.MULTILINE | re.VERBOSE
+)
+
+INLINE_COMMENT_RE = re.compile(r"""
+ ([\,\"\[\]\{\}\d]) # anythig that might end a expression
+ \s+ # comment must be preceded by whitespace
+ // # start of the comment
+ \s # and succeded by whitespace
+ (?:[^\"\]\}\{\[]*) # the comment (except things which might be json)
+ $ # until the end of line
+""", re.MULTILINE | re.VERBOSE)
+
+TRAILING_COMMA_RE = re.compile(r"""
+ , # the comma
+ (?:\s*) # arbitrary whitespace
+ $ # only works if the trailing comma is followed by newline
+ (\s*) # arbitrary whitespace
+ ([\]\}]) # end of an array or object
+""", re.MULTILINE | re.VERBOSE)
+
+
+def loads(raw_data):
+ if isinstance(raw_data, bytes):
+ raw_data = raw_data.decode('utf-8')
+
+ raw_data = ONELINE_COMMENT_RE.sub(r"", raw_data)
+ raw_data = INLINE_COMMENT_RE.sub(r"\1", raw_data)
+ raw_data = TRAILING_COMMA_RE.sub(r"\1\2", raw_data)
+ return json.loads(raw_data)
+
+
+def parse_config(path):
+ def reset_section():
+ section.update({
+ 'name': section.get('name', ""),
+ 'sub_name': "",
+ 'start_line': -1,
+ 'end_line': -1,
+ 'code_lines': [],
+ })
+
+ def start_section(line_index, line):
+ end_section()
+ if line.startswith("# "):
+ name = line[2:]
+ elif line.startswith("## "):
+ name = line[3:]
+ else:
+ name = ""
+
+ name = name.strip().replace(" ", "_").lower()
+ if name in SECTIONS:
+ section['name'] = name
+ else:
+ section['sub_name'] = name
+ section['start_line'] = line_index
+
+ def end_section():
+ if section['start_line'] >= 0:
+ if section['name'] == 'layout_config':
+ config.update(loads("\n".join(
+ section['code_lines']
+ )))
+ elif section['sub_name'].startswith('layer'):
+ layer_name = section['sub_name']
+ config['layer_lines'][layer_name] = section['code_lines']
+
+ reset_section()
+
+ def amend_section(line_index, line):
+ section['end_line'] = line_index
+ section['code_lines'].append(line)
+
+ config = DEFAULT_CONFIG.copy()
+ config.update({
+ 'layer_lines': collections.OrderedDict(),
+ 'macro_ids': {'UM'},
+ 'unicode_macros': {},
+ })
+
+ section = {}
+ reset_section()
+
+ with io.open(path, encoding="utf-8") as fh:
+ for i, line in enumerate(fh):
+ if line.startswith("#"):
+ start_section(i, line)
+ elif line.startswith(" "):
+ amend_section(i, line[4:])
+ else:
+ # TODO: maybe parse description
+ pass
+
+ end_section()
+ assert 'layout' in config
+ return config
+
+# header file parsing
+
+IF0_RE = re.compile(r"""
+ ^
+ #if 0
+ $.*?
+ #endif
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+COMMENT_RE = re.compile(r"""
+ /\*
+ .*?
+ \*/"
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+def read_header_file(path):
+ with io.open(path, encoding="utf-8") as fh:
+ data = fh.read()
+ data, _ = COMMENT_RE.subn("", data)
+ data, _ = IF0_RE.subn("", data)
+ return data
+
+
+def regex_partial(re_str_fmt, flags):
+ def partial(*args, **kwargs):
+ re_str = re_str_fmt.format(*args, **kwargs)
+ return re.compile(re_str, flags)
+ return partial
+
+
+KEYDEF_REP = regex_partial(r"""
+ #define
+ \s
+ (
+ (?:{}) # the prefixes
+ (?:\w+) # the key name
+ ) # capture group end
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+ENUM_RE = re.compile(r"""
+ (
+ enum
+ \s\w+\s
+ \{
+ .*? # the enum content
+ \}
+ ;
+ ) # capture group end
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+ENUM_KEY_REP = regex_partial(r"""
+ (
+ {} # the prefixes
+ \w+ # the key name
+ ) # capture group end
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+def parse_keydefs(config, data):
+ prefix_options = "|".join(config['key_prefixes'])
+ keydef_re = KEYDEF_REP(prefix_options)
+ enum_key_re = ENUM_KEY_REP(prefix_options)
+ for match in keydef_re.finditer(data):
+ yield match.groups()[0]
+
+ for enum_match in ENUM_RE.finditer(data):
+ enum = enum_match.groups()[0]
+ for key_match in enum_key_re.finditer(enum):
+ yield key_match.groups()[0]
+
+
+def parse_valid_keys(config, out_path):
+ basepath = os.path.abspath(os.path.join(os.path.dirname(out_path)))
+ dirpaths = []
+ subpaths = []
+ while len(subpaths) < 6:
+ path = os.path.join(basepath, *subpaths)
+ dirpaths.append(path)
+ dirpaths.append(os.path.join(path, "tmk_core", "common"))
+ dirpaths.append(os.path.join(path, "quantum"))
+ subpaths.append('..')
+
+ includes = set(config['keymaps_includes'])
+ includes.add("keycode.h")
+
+ valid_keycodes = set()
+ for dirpath, include in it.product(dirpaths, includes):
+ include_path = os.path.join(dirpath, include)
+ if os.path.exists(include_path):
+ header_data = read_header_file(include_path)
+ valid_keycodes.update(
+ parse_keydefs(config, header_data)
+ )
+ return valid_keycodes
+
+
+# Keymap Parsing
+
+def iter_raw_codes(layer_lines, filler, separator):
+ filler_re = re.compile("[" + filler + " ]")
+ for line in layer_lines:
+ line, _ = filler_re.subn("", line.strip())
+ if not line:
+ continue
+ codes = line.split(separator)
+ for code in codes[1:-1]:
+ yield code
+
+
+def iter_indexed_codes(raw_codes, key_indexes):
+ key_rows = {}
+ key_indexes_flat = []
+
+ for row_index, key_indexes in enumerate(key_indexes):
+ for key_index in key_indexes:
+ key_rows[key_index] = row_index
+ key_indexes_flat.extend(key_indexes)
+ assert len(raw_codes) == len(key_indexes_flat)
+ for raw_code, key_index in zip(raw_codes, key_indexes_flat):
+ # we keep track of the row mostly for layout purposes
+ yield raw_code, key_index, key_rows[key_index]
+
+
+LAYER_CHANGE_RE = re.compile(r"""
+ (DF|TG|MO)\(\d+\)
+""", re.VERBOSE)
+
+
+MACRO_RE = re.compile(r"""
+ M\(\w+\)
+""", re.VERBOSE)
+
+
+UNICODE_RE = re.compile(r"""
+ U[0-9A-F]{4}
+""", re.VERBOSE)
+
+
+NON_CODE = re.compile(r"""
+ ^[^A-Z0-9_]$
+""", re.VERBOSE)
+
+
+def parse_uni_code(raw_code):
+ macro_id = "UC_" + (
+ unicodedata.name(raw_code)
+ .replace(" ", "_")
+ .replace("-", "_")
+ )
+ code = "M({})".format(macro_id)
+ uc_hex = "{:04X}".format(ord(raw_code))
+ return code, macro_id, uc_hex
+
+
+def parse_key_code(raw_code, key_prefixes, valid_keycodes):
+ if raw_code in valid_keycodes:
+ return raw_code
+
+ for prefix in key_prefixes:
+ code = prefix + raw_code
+ if code in valid_keycodes:
+ return code
+
+
+def parse_code(raw_code, key_prefixes, valid_keycodes):
+ if not raw_code:
+ return 'KC_TRNS', None, None
+
+ if LAYER_CHANGE_RE.match(raw_code):
+ return raw_code, None, None
+
+ if MACRO_RE.match(raw_code):
+ macro_id = raw_code[2:-1]
+ return raw_code, macro_id, None
+
+ if UNICODE_RE.match(raw_code):
+ hex_code = raw_code[1:]
+ return parse_uni_code(chr(int(hex_code, 16)))
+
+ if NON_CODE.match(raw_code):
+ return parse_uni_code(raw_code)
+
+ code = parse_key_code(raw_code, key_prefixes, valid_keycodes)
+ return code, None, None
+
+
+def parse_keymap(config, key_indexes, layer_lines, valid_keycodes):
+ keymap = {}
+ raw_codes = list(iter_raw_codes(
+ layer_lines, config['filler'], config['separator']
+ ))
+ indexed_codes = iter_indexed_codes(raw_codes, key_indexes)
+ key_prefixes = config['key_prefixes']
+ for raw_code, key_index, row_index in indexed_codes:
+ code, macro_id, uc_hex = parse_code(
+ raw_code, key_prefixes, valid_keycodes
+ )
+ # TODO: line numbers for invalid codes
+ err_msg = "Could not parse key '{}' on row {}".format(
+ raw_code, row_index
+ )
+ assert code is not None, err_msg
+ # print(repr(raw_code), repr(code), macro_id, uc_hex)
+ if macro_id:
+ config['macro_ids'].add(macro_id)
+ if uc_hex:
+ config['unicode_macros'][macro_id] = uc_hex
+ keymap[key_index] = (code, row_index)
+ return keymap
+
+
+def parse_keymaps(config, valid_keycodes):
+ keymaps = collections.OrderedDict()
+ key_indexes = config.get(
+ 'key_indexes', KEYBOARD_LAYOUTS[config['layout']]
+ )
+ # TODO: maybe validate key_indexes
+
+ for layer_name, layer_lines, in config['layer_lines'].items():
+ keymaps[layer_name] = parse_keymap(
+ config, key_indexes, layer_lines, valid_keycodes
+ )
+ return keymaps
+
+# keymap.c output
+
+USERCODE = """
+// Runs just one time when the keyboard initializes.
+void matrix_init_user(void) {
+
+};
+
+// Runs constantly in the background, in a loop.
+void matrix_scan_user(void) {
+ uint8_t layer = biton32(layer_state);
+
+ ergodox_board_led_off();
+ ergodox_right_led_1_off();
+ ergodox_right_led_2_off();
+ ergodox_right_led_3_off();
+ switch (layer) {
+ case L1:
+ ergodox_right_led_1_on();
+ break;
+ case L2:
+ ergodox_right_led_2_on();
+ break;
+ case L3:
+ ergodox_right_led_3_on();
+ break;
+ case L4:
+ ergodox_right_led_1_on();
+ ergodox_right_led_2_on();
+ break;
+ case L5:
+ ergodox_right_led_1_on();
+ ergodox_right_led_3_on();
+ break;
+ // case L6:
+ // ergodox_right_led_2_on();
+ // ergodox_right_led_3_on();
+ // break;
+ // case L7:
+ // ergodox_right_led_1_on();
+ // ergodox_right_led_2_on();
+ // ergodox_right_led_3_on();
+ // break;
+ default:
+ ergodox_board_led_off();
+ break;
+ }
+};
+"""
+
+MACROCODE = """
+#define UC_MODE_WIN 0
+#define UC_MODE_LINUX 1
+#define UC_MODE_OSX 2
+
+// TODO: allow default mode to be configured
+static uint16_t unicode_mode = UC_MODE_WIN;
+
+uint16_t hextokeycode(uint8_t hex) {{
+ if (hex == 0x0) {{
+ return KC_P0;
+ }}
+ if (hex < 0xA) {{
+ return KC_P1 + (hex - 0x1);
+ }}
+ return KC_A + (hex - 0xA);
+}}
+
+void unicode_action_function(uint16_t hi, uint16_t lo) {{
+ switch (unicode_mode) {{
+ case UC_MODE_WIN:
+ register_code(KC_LALT);
+
+ register_code(KC_PPLS);
+ unregister_code(KC_PPLS);
+
+ register_code(hextokeycode((hi & 0xF0) >> 4));
+ unregister_code(hextokeycode((hi & 0xF0) >> 4));
+ register_code(hextokeycode((hi & 0x0F)));
+ unregister_code(hextokeycode((hi & 0x0F)));
+ register_code(hextokeycode((lo & 0xF0) >> 4));
+ unregister_code(hextokeycode((lo & 0xF0) >> 4));
+ register_code(hextokeycode((lo & 0x0F)));
+ unregister_code(hextokeycode((lo & 0x0F)));
+
+ unregister_code(KC_LALT);
+ break;
+ case UC_MODE_LINUX:
+ register_code(KC_LCTL);
+ register_code(KC_LSFT);
+
+ register_code(KC_U);
+ unregister_code(KC_U);
+
+ register_code(hextokeycode((hi & 0xF0) >> 4));
+ unregister_code(hextokeycode((hi & 0xF0) >> 4));
+ register_code(hextokeycode((hi & 0x0F)));
+ unregister_code(hextokeycode((hi & 0x0F)));
+ register_code(hextokeycode((lo & 0xF0) >> 4));
+ unregister_code(hextokeycode((lo & 0xF0) >> 4));
+ register_code(hextokeycode((lo & 0x0F)));
+ unregister_code(hextokeycode((lo & 0x0F)));
+
+ unregister_code(KC_LCTL);
+ unregister_code(KC_LSFT);
+ break;
+ case UC_MODE_OSX:
+ break;
+ }}
+}}
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) {{
+ if (!record->event.pressed) {{
+ return MACRO_NONE;
+ }}
+ // MACRODOWN only works in this function
+ switch(id) {{
+ case UM:
+ unicode_mode = (unicode_mode + 1) % 2;
+ break;
+{macro_cases}
+{unicode_macro_cases}
+ default:
+ break;
+ }}
+ return MACRO_NONE;
+}};
+"""
+
+
+UNICODE_MACRO_TEMPLATE = """
+case {macro_id}:
+ unicode_action_function(0x{hi:02x}, 0x{lo:02x});
+ break;
+""".strip()
+
+
+def unicode_macro_cases(config):
+ for macro_id, uc_hex in config['unicode_macros'].items():
+ hi = int(uc_hex, 16) >> 8
+ lo = int(uc_hex, 16) & 0xFF
+ unimacro_keys = ", ".join(
+ "T({})".format(
+ "KP_" + digit if digit.isdigit() else digit
+ ) for digit in uc_hex
+ )
+ yield UNICODE_MACRO_TEMPLATE.format(
+ macro_id=macro_id, hi=hi, lo=lo
+ )
+
+
+def iter_keymap_lines(keymap, row_indents=None):
+ col_widths = {}
+ col = 0
+ # first pass, figure out the column widths
+ prev_row_index = None
+ for code, row_index in keymap.values():
+ if row_index != prev_row_index:
+ col = 0
+ if row_indents:
+ col = row_indents[row_index]
+ col_widths[col] = max(len(code), col_widths.get(col, 0))
+ prev_row_index = row_index
+ col += 1
+
+ # second pass, yield the cell values
+ col = 0
+ prev_row_index = None
+ for key_index in sorted(keymap):
+ code, row_index = keymap[key_index]
+ if row_index != prev_row_index:
+ col = 0
+ yield "\n"
+ if row_indents:
+ for indent_col in range(row_indents[row_index]):
+ pad = " " * (col_widths[indent_col] - 4)
+ yield (" /*-*/" + pad)
+ col = row_indents[row_index]
+ else:
+ yield pad
+ yield " {}".format(code)
+ if key_index < len(keymap) - 1:
+ yield ","
+ # This will be yielded on the next iteration when
+ # we know that we're not at the end of a line.
+ pad = " " * (col_widths[col] - len(code))
+ prev_row_index = row_index
+ col += 1
+
+
+def iter_keymap_parts(config, keymaps):
+ # includes
+ for include_path in config['keymaps_includes']:
+ yield '#include "{}"\n'.format(include_path)
+
+ yield "\n"
+
+ # definitions
+ for i, macro_id in enumerate(sorted(config['macro_ids'])):
+ yield "#define {} {}\n".format(macro_id, i)
+
+ yield "\n"
+
+ for i, layer_name in enumerate(config['layer_lines']):
+ yield '#define L{0:<3} {0:<5} // {1}\n'.format(i, layer_name)
+
+ yield "\n"
+
+ # keymaps
+ yield "const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {\n"
+
+ for i, layer_name in enumerate(config['layer_lines']):
+ # comment
+ layer_lines = config['layer_lines'][layer_name]
+ prefixed_lines = " * " + " * ".join(layer_lines)
+ yield "/*\n{} */\n".format(prefixed_lines)
+
+ # keymap codes
+ keymap = keymaps[layer_name]
+ row_indents = ROW_INDENTS.get(config['layout'])
+ keymap_lines = "".join(iter_keymap_lines(keymap, row_indents))
+ yield "[L{0}] = KEYMAP({1}\n),\n".format(i, keymap_lines)
+
+ yield "};\n\n"
+
+ # no idea what this is for
+ yield "const uint16_t PROGMEM fn_actions[] = {};\n"
+
+ # macros
+ yield MACROCODE.format(
+ macro_cases="",
+ unicode_macro_cases="\n".join(unicode_macro_cases(config)),
+ )
+
+ # TODO: dynamically create blinking lights
+ yield USERCODE
+
+
+def main(argv=sys.argv[1:]):
+ if not argv or '-h' in argv or '--help' in argv:
+ print(__doc__)
+ return 0
+
+ in_path = os.path.abspath(argv[0])
+ if not os.path.exists(in_path):
+ print("No such file '{}'".format(in_path))
+ return 1
+
+ if len(argv) > 1:
+ out_path = os.path.abspath(argv[1])
+ else:
+ dirname = os.path.dirname(in_path)
+ out_path = os.path.join(dirname, "keymap.c")
+
+ config = parse_config(in_path)
+ valid_keys = parse_valid_keys(config, out_path)
+ keymaps = parse_keymaps(config, valid_keys)
+
+ with io.open(out_path, mode="w", encoding="utf-8") as fh:
+ for part in iter_keymap_parts(config, keymaps):
+ fh.write(part)
+
+
+if __name__ == '__main__':
+ sys.exit(main())
diff --git a/keyboards/ergodox_ez/util/readme.md b/keyboards/ergodox_ez/util/readme.md
new file mode 100644
index 0000000000..26c5e5d99c
--- /dev/null
+++ b/keyboards/ergodox_ez/util/readme.md
@@ -0,0 +1,3 @@
+# ErgoDox EZ Utilities
+
+The Python script in this directory, by [mbarkhau](https://github.com/mbarkhau) allows you to write out a basic ErgoDox EZ keymap using Markdown notation, and then transpile it to C, which you can then compile. It's experimental, but if you're not comfortable using C, it's a nice option.