1 files changed, 93 insertions, 0 deletions
diff --git a/lib/python/qmk/cli/generate/layouts.py b/lib/python/qmk/cli/generate/layouts.py
new file mode 100755
index 0000000000..809f0ef7ec
--- /dev/null
+++ b/lib/python/qmk/cli/generate/layouts.py
@@ -0,0 +1,93 @@
+"""Used by the make system to generate layouts.h from info.json.
+"""
+from milc import cli
+
+from qmk.constants import COL_LETTERS, ROW_LETTERS
+from qmk.decorators import automagic_keyboard, automagic_keymap
+from qmk.info import info_json
+from qmk.path import is_keyboard, normpath
+
+usb_properties = {
+    'vid': 'VENDOR_ID',
+    'pid': 'PRODUCT_ID',
+    'device_ver': 'DEVICE_VER',
+}
+
+
+@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', help='Keyboard to generate config.h for.')
+@cli.subcommand('Used by the make system to generate layouts.h from info.json', hidden=True)
+@automagic_keyboard
+@automagic_keymap
+def generate_layouts(cli):
+    """Generates the layouts.h file.
+    """
+    # Determine our keyboard(s)
+    if not cli.config.generate_layouts.keyboard:
+        cli.log.error('Missing paramater: --keyboard')
+        cli.subcommands['info'].print_help()
+        return False
+
+    if not is_keyboard(cli.config.generate_layouts.keyboard):
+        cli.log.error('Invalid keyboard: "%s"', cli.config.generate_layouts.keyboard)
+        return False
+
+    # Build the info.json file
+    kb_info_json = info_json(cli.config.generate_layouts.keyboard)
+
+    # Build the layouts.h file.
+    layouts_h_lines = ['/* This file was generated by `qmk generate-layouts`. Do not edit or copy.' ' */', '', '#pragma once']
+
+    if 'direct' in kb_info_json['matrix_pins']:
+        col_num = len(kb_info_json['matrix_pins']['direct'][0])
+        row_num = len(kb_info_json['matrix_pins']['direct'])
+    elif 'cols' in kb_info_json['matrix_pins'] and 'rows' in kb_info_json['matrix_pins']:
+        col_num = len(kb_info_json['matrix_pins']['cols'])
+        row_num = len(kb_info_json['matrix_pins']['rows'])
+    else:
+        cli.log.error('%s: Invalid matrix config.', cli.config.generate_layouts.keyboard)
+        return False
+
+    for layout_name in kb_info_json['layouts']:
+        if kb_info_json['layouts'][layout_name]['c_macro']:
+            continue
+
+        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])
+
+            try:
+                layout_matrix[row][col] = identifier
+                layout_keys.append(identifier)
+            except IndexError:
+                key_name = key.get('label', identifier)
+                cli.log.error('Matrix data out of bounds for layout %s at index %s (%s): %s, %s', layout_name, i, key_name, row, col)
+                return False
+
+        layouts_h_lines.append('')
+        layouts_h_lines.append('#define %s(%s) {\\' % (layout_name, ', '.join(layout_keys)))
+
+        rows = ', \\\n'.join(['\t {' + ', '.join(row) + '}' for row in layout_matrix])
+        rows += ' \\'
+        layouts_h_lines.append(rows)
+        layouts_h_lines.append('}')
+
+    # Show the results
+    layouts_h = '\n'.join(layouts_h_lines) + '\n'
+
+    if cli.args.output:
+        cli.args.output.parent.mkdir(parents=True, exist_ok=True)
+        if cli.args.output.exists():
+            cli.args.output.replace(cli.args.output.name + '.bak')
+        cli.args.output.write_text(layouts_h)
+
+        if not cli.args.quiet:
+            cli.log.info('Wrote info_config.h to %s.', cli.args.output)
+
+    else:
+        print(layouts_h)