qmk-dactyl-manuform-a/lib/python/qmk/cli/json2c.py

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"""Generate a keymap.c from a configurator export.
"""
import json
from milc import cli
import qmk.keymap
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")
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@cli.argument('filename', type=qmk.path.normpath, 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.
This command uses the `qmk.keymap` module to generate a keymap.c from a configurator export. The generated keymap is written to stdout, or to a file if -o is provided.
"""
# Error checking
if cli.args.filename and cli.args.filename.name == '-':
# TODO(skullydazed/anyone): Read file contents from STDIN
cli.log.error('Reading from STDIN is not (yet) supported.')
cli.print_usage()
return False
if not cli.args.filename.exists():
cli.log.error('JSON file does not exist!')
cli.print_usage()
return False
# Environment processing
if cli.args.output and cli.args.output.name == '-':
cli.args.output = None
# Parse the configurator json
with cli.args.filename.open('r') as fd:
user_keymap = json.load(fd)
# Generate the keymap
keymap_c = qmk.keymap.generate_c(user_keymap['keyboard'], user_keymap['layout'], user_keymap['layers'])
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(keymap_c)
if not cli.args.quiet:
cli.log.info('Wrote keymap to %s.', cli.args.output)
else:
print(keymap_c)