CLI: Validate JSON keymap input (#16261)

* Fix schema validator

It should use the passed schema.

* Add required attributes to keymap schema

* Rework subcommands to validate the JSON keymaps

The 'compile', 'flash' and 'json2c' subcommands were reworked to add
JSON keymap validation so error is reported for non-JSON and
non-compliant-JSON inputs.

* Fix required fields in keymap schema

* Add tests

* Fix compiling keymaps directly from keymap directory

* Schema should not require version for now.

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/python/qmk/path.py b/lib/python/qmk/path.py
index dfb8371f84..9b94abbc12 100644
--- a/lib/python/qmk/path.py
+++ b/lib/python/qmk/path.py
@@ -70,9 +70,13 @@ def normpath(path):
 
 
 class FileType(argparse.FileType):
+    def __init__(self, encoding='UTF-8'):
+        # Use UTF8 by default for stdin
+        return super().__init__(encoding=encoding)
+
     def __call__(self, string):
         """normalize and check exists
             otherwise magic strings like '-' for stdin resolve to bad paths
         """
         norm = normpath(string)
-        return super().__call__(norm if norm.exists() else string)
+        return norm if norm.exists() else super().__call__(string)