Merge in keymap level to XAP info.json payload

lib/python/qmk/xap/gen_firmware/info_generator.py

@@ -0,0 +1,40 @@
+"""This script generates the XAP info.json payload header to be compiled into QMK.
+"""
+import json
+import gzip
+
+from qmk.info import keymap_json
+from qmk.commands import get_chunks, dump_lines
+
+from qmk.constants import GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE
+
+
+def generate_info(output_file, keyboard, keymap):
+    # Build the info.json file
+    km_info_json = keymap_json(keyboard, keymap)
+
+    # TODO: Munge to XAP requirements
+
+    # Minify
+    str_data = json.dumps(km_info_json, separators=(',', ':'))
+
+    # Compress
+    compressed = gzip.compress(str_data.encode("utf-8"), compresslevel=9)
+
+    # split into lines to match xxd output
+    hex_array = ["0x{:02X}".format(b) for b in compressed]
+    data_len = len(hex_array)
+
+    data = ""
+    for chunk in get_chunks(hex_array, 12):
+        data += f'  {", ".join(chunk)},\n'
+
+    lines = [GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE, '#pragma once', '']
+
+    # Gen output file
+    lines.append('unsigned char info_json_gz[] = {')
+    lines.append(data)
+    lines.append('};')
+    lines.append(f'unsigned int info_json_gz_len = {data_len};')
+
+    dump_lines(output_file, lines)