qmk_firmware/lib/python/qmk/cli/c2json.py

66 lines
2.8 KiB
Python

"""Generate a keymap.json from a keymap.c file.
"""
import json
from argcomplete.completers import FilesCompleter
from milc import cli
import qmk.keymap
import qmk.path
from qmk.json_encoders import InfoJSONEncoder
from qmk.keyboard import keyboard_completer, keyboard_folder
from qmk.errors import CppError
@cli.argument('--no-cpp', arg_only=True, action='store_false', help='Do not use \'cpp\' on keymap.c')
@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('-kb', '--keyboard', arg_only=True, type=keyboard_folder, completer=keyboard_completer, required=True, help='The keyboard\'s name')
@cli.argument('-km', '--keymap', arg_only=True, required=True, help='The keymap\'s name')
@cli.argument('filename', arg_only=True, completer=FilesCompleter('.c'), help='keymap.c file')
@cli.subcommand('Creates a keymap.json from a keymap.c file.')
def c2json(cli):
"""Generate a keymap.json from a keymap.c file.
This command uses the `qmk.keymap` module to generate a keymap.json from a keymap.c file. The generated keymap is written to stdout, or to a file if -o is provided.
"""
if cli.args.filename != '-':
cli.args.filename = qmk.path.normpath(cli.args.filename)
# Error checking
if not cli.args.filename.exists():
cli.log.error('C file does not exist!')
cli.print_usage()
return False
# Environment processing
if cli.args.output == ('-'):
cli.args.output = None
# Parse the keymap.c
try:
keymap_json = qmk.keymap.c2json(cli.args.keyboard, cli.args.keymap, cli.args.filename, use_cpp=cli.args.no_cpp)
except CppError as e:
if cli.config.general.verbose:
cli.log.debug('The C pre-processor ran into a fatal error: %s', e)
cli.log.error('Something went wrong. Try to use --no-cpp.\nUse the CLI in verbose mode to find out more.')
return False
# Generate the keymap.json
try:
keymap_json = qmk.keymap.generate_json(keymap_json['keymap'], keymap_json['keyboard'], keymap_json['layout'], keymap_json['layers'])
except KeyError:
cli.log.error('Something went wrong. Try to use --no-cpp.')
return False
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.parent / (cli.args.output.name + '.bak'))
cli.args.output.write_text(json.dumps(keymap_json, cls=InfoJSONEncoder, sort_keys=True))
if not cli.args.quiet:
cli.log.info('Wrote keymap to %s.', cli.args.output)
else:
print(json.dumps(keymap_json))