1 files changed, 68 insertions, 0 deletions

diff --git a/lib/python/qmk/json_schema.py b/lib/python/qmk/json_schema.py
new file mode 100644
index 000000000..b4cd1776b
--- /dev/null
+++ b/lib/python/qmk/json_schema.py
@@ -0,0 +1,68 @@
+"""Functions that help us generate and use info.json files.
+"""
+import json
+from collections.abc import Mapping
+from pathlib import Path
+
+import hjson
+import jsonschema
+from milc import cli
+
+
+def json_load(json_file):
+    """Load a json file from disk.
+
+    Note: file must be a Path object.
+    """
+    try:
+        return hjson.load(json_file.open())
+
+    except json.decoder.JSONDecodeError as e:
+        cli.log.error('Invalid JSON encountered attempting to load {fg_cyan}%s{fg_reset}:\n\t{fg_red}%s', json_file, e)
+        exit(1)
+
+
+def load_jsonschema(schema_name):
+    """Read a jsonschema file from disk.
+
+    FIXME(skullydazed/anyone): Refactor to make this a public function.
+    """
+    schema_path = Path(f'data/schemas/{schema_name}.jsonschema')
+
+    if not schema_path.exists():
+        schema_path = Path('data/schemas/false.jsonschema')
+
+    return json_load(schema_path)
+
+
+def keyboard_validate(data):
+    """Validates data against the keyboard jsonschema.
+    """
+    schema = load_jsonschema('keyboard')
+    validator = jsonschema.Draft7Validator(schema).validate
+
+    return validator(data)
+
+
+def keyboard_api_validate(data):
+    """Validates data against the api_keyboard jsonschema.
+    """
+    base = load_jsonschema('keyboard')
+    relative = load_jsonschema('api_keyboard')
+    resolver = jsonschema.RefResolver.from_schema(base)
+    validator = jsonschema.Draft7Validator(relative, resolver=resolver).validate
+
+    return validator(data)
+
+
+def deep_update(origdict, newdict):
+    """Update a dictionary in place, recursing to do a deep copy.
+    """
+    for key, value in newdict.items():
+        if isinstance(value, Mapping):
+            origdict[key] = deep_update(origdict.get(key, {}), value)
+
+        else:
+            origdict[key] = value
+
+    return origdict