Allow flash/compile to accept relative json paths (#11767)

* Allow flash/compile to accept relative paths

* Review suggestions

* Review comments

* Put back exists check otherwise stdin fails

* fix lint

1 files changed, 3 insertions, 15 deletions

diff --git a/lib/python/qmk/cli/json2c.py b/lib/python/qmk/cli/json2c.py
index 97d8fb0c3..e7babc0e4 100755
--- a/lib/python/qmk/cli/json2c.py
+++ b/lib/python/qmk/cli/json2c.py
@@ -1,7 +1,6 @@
 """Generate a keymap.c from a configurator export.
 """
 import json
-import sys
 
 from milc import cli
 
@@ -11,7 +10,7 @@ import qmk.path
 
 @cli.argument('-o', '--output', arg_only=True, type=qmk.path.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('filename', type=qmk.path.normpath, arg_only=True, help='Configurator JSON file')
+@cli.argument('filename', type=qmk.path.FileType('r'), arg_only=True, help='Configurator JSON file')
 @cli.subcommand('Creates a keymap.c from a QMK Configurator export.')
 def json2c(cli):
     """Generate a keymap.c from a configurator export.
@@ -20,19 +19,8 @@ def json2c(cli):
     """
 
     try:
-        # Parse the configurator from stdin
-        if cli.args.filename and cli.args.filename.name == '-':
-            user_keymap = json.load(sys.stdin)
-
-        else:
-            # Error checking
-            if not cli.args.filename.exists():
-                cli.log.error('JSON file does not exist!')
-                return False
-
-            # Parse the configurator json file
-            else:
-                user_keymap = json.loads(cli.args.filename.read_text())
+        # Parse the configurator from json file (or stdin)
+        user_keymap = json.load(cli.args.filename)
 
     except json.decoder.JSONDecodeError as ex:
         cli.log.error('The JSON input does not appear to be valid.')