1 files changed, 59 insertions, 10 deletions

diff --git a/lib/python/qmk/cli/generate/keyboard_h.py b/lib/python/qmk/cli/generate/keyboard_h.py
index 54ddb4cffd..910bd6a08d 100755
--- a/lib/python/qmk/cli/generate/keyboard_h.py
+++ b/lib/python/qmk/cli/generate/keyboard_h.py
@@ -1,33 +1,72 @@
 """Used by the make system to generate keyboard.h from info.json.
 """
+from pathlib import Path
+
 from milc import cli
 
+from qmk.path import normpath
 from qmk.info import info_json
 from qmk.commands import dump_lines
 from qmk.keyboard import keyboard_completer, keyboard_folder
-from qmk.path import normpath
-from qmk.constants import GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE
+from qmk.constants import COL_LETTERS, ROW_LETTERS, GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE
 
 
-def would_populate_layout_h(keyboard):
-    """Detect if a given keyboard is doing data driven layouts
+def _generate_layouts(keyboard):
+    """Generates the layouts.h file.
     """
     # Build the info.json file
     kb_info_json = info_json(keyboard)
 
+    if 'matrix_size' not in kb_info_json:
+        cli.log.error(f'{keyboard}: Invalid matrix config.')
+        return []
+
+    col_num = kb_info_json['matrix_size']['cols']
+    row_num = kb_info_json['matrix_size']['rows']
+
+    lines = []
     for layout_name in kb_info_json['layouts']:
         if kb_info_json['layouts'][layout_name]['c_macro']:
             continue
 
         if 'matrix' not in kb_info_json['layouts'][layout_name]['layout'][0]:
-            cli.log.debug('%s/%s: No matrix data!', keyboard, layout_name)
+            cli.log.debug(f'{keyboard}/{layout_name}: No matrix data!')
             continue
 
-        return True
+        layout_keys = []
+        layout_matrix = [['KC_NO' for i in range(col_num)] for i in range(row_num)]
+
+        for i, key in enumerate(kb_info_json['layouts'][layout_name]['layout']):
+            row = key['matrix'][0]
+            col = key['matrix'][1]
+            identifier = 'k%s%s' % (ROW_LETTERS[row], COL_LETTERS[col])
 
-    return False
+            try:
+                layout_matrix[row][col] = identifier
+                layout_keys.append(identifier)
+            except IndexError:
+                key_name = key.get('label', identifier)
+                cli.log.error(f'Matrix data out of bounds for layout {layout_name} at index {i} ({key_name}): [{row}, {col}]')
+                return []
 
+        lines.append('')
+        lines.append('#define %s(%s) {\\' % (layout_name, ', '.join(layout_keys)))
 
+        rows = ', \\\n'.join(['\t {' + ', '.join(row) + '}' for row in layout_matrix])
+        rows += ' \\'
+        lines.append(rows)
+        lines.append('}')
+
+    for alias, target in kb_info_json.get('layout_aliases', {}).items():
+        lines.append('')
+        lines.append(f'#ifndef {alias}')
+        lines.append(f'#   define {alias} {target}')
+        lines.append('#endif')
+
+    return lines
+
+
+@cli.argument('-i', '--include', nargs='?', arg_only=True, help='Optional file to include')
 @cli.argument('-o', '--output', arg_only=True, type=normpath, help='File to write to')
 @cli.argument('-q', '--quiet', arg_only=True, action='store_true', help="Quiet mode, only output error messages")
 @cli.argument('-kb', '--keyboard', arg_only=True, type=keyboard_folder, completer=keyboard_completer, required=True, help='Keyboard to generate keyboard.h for.')
@@ -35,13 +74,23 @@ def would_populate_layout_h(keyboard):
 def generate_keyboard_h(cli):
     """Generates the keyboard.h file.
     """
-    has_layout_h = would_populate_layout_h(cli.args.keyboard)
+    keyboard_h = cli.args.include
+    dd_layouts = _generate_layouts(cli.args.keyboard)
+    valid_config = dd_layouts or keyboard_h
 
     # Build the layouts.h file.
     keyboard_h_lines = [GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE, '#pragma once', '#include "quantum.h"']
 
-    if not has_layout_h:
-        keyboard_h_lines.append('#error("<keyboard>.h is only optional for data driven keyboards - kb.h == bad times")')
+    keyboard_h_lines.append('')
+    keyboard_h_lines.append('// Layout content')
+    if dd_layouts:
+        keyboard_h_lines.extend(dd_layouts)
+    if keyboard_h:
+        keyboard_h_lines.append(f'#include "{Path(keyboard_h).name}"')
+
+    # Protect against poorly configured keyboards
+    if not valid_config:
+        keyboard_h_lines.append('#error("<keyboard>.h is required unless your keyboard uses data-driven configuration. Please rename your keyboard\'s header file to <keyboard>.h")')
 
     # Show the results
     dump_lines(cli.args.output, keyboard_h_lines, cli.args.quiet)