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Only try compat parsing after regular parsing fails (#2269)
This commit is contained in:
Oxan van Leeuwen
GitHub
parent
0cd24c629a
commit
3aa107142b
@ -483,75 +483,9 @@ def parse_args(argv):
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metavar=("key", "value"),
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)
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# Keep backward compatibility with the old command line format of
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# esphome <config> <command>.
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#
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# Unfortunately this can't be done by adding another configuration argument to the
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# main config parser, as argparse is greedy when parsing arguments, so in regular
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# usage it'll eat the command as the configuration argument and error out out
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# because it can't parse the configuration as a command.
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#
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# Instead, construct an ad-hoc parser for the old format that doesn't actually
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# process the arguments, but parses them enough to let us figure out if the old
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# format is used. In that case, swap the command and configuration in the arguments
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# and continue on with the normal parser (after raising a deprecation warning).
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#
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# Disable argparse's built-in help option and add it manually to prevent this
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# parser from printing the help messagefor the old format when invoked with -h.
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compat_parser = argparse.ArgumentParser(parents=[options_parser], add_help=False)
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compat_parser.add_argument("-h", "--help")
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compat_parser.add_argument("configuration", nargs="*")
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compat_parser.add_argument(
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"command",
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choices=[
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"config",
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"compile",
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"upload",
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"logs",
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"run",
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"clean-mqtt",
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"wizard",
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"mqtt-fingerprint",
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"version",
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"clean",
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"dashboard",
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"vscode",
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"update-all",
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],
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)
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# on Python 3.9+ we can simply set exit_on_error=False in the constructor
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def _raise(x):
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raise argparse.ArgumentError(None, x)
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compat_parser.error = _raise
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deprecated_argv_suggestion = None
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if ["dashboard", "config"] == argv[1:3] or ["version"] == argv[1:2]:
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# this is most likely meant in new-style arg format. do not try compat parsing
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pass
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else:
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try:
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result, unparsed = compat_parser.parse_known_args(argv[1:])
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last_option = len(argv) - len(unparsed) - 1 - len(result.configuration)
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unparsed = [
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"--device" if arg in ("--upload-port", "--serial-port") else arg
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for arg in unparsed
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]
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argv = (
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argv[0:last_option] + [result.command] + result.configuration + unparsed
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)
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deprecated_argv_suggestion = argv
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except argparse.ArgumentError:
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# This is not an old-style command line, so we don't have to do anything.
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pass
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# And continue on with regular parsing
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parser = argparse.ArgumentParser(
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description=f"ESPHome v{const.__version__}", parents=[options_parser]
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)
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parser.set_defaults(deprecated_argv_suggestion=deprecated_argv_suggestion)
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mqtt_options = argparse.ArgumentParser(add_help=False)
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mqtt_options.add_argument("--topic", help="Manually set the MQTT topic.")
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@ -701,7 +635,83 @@ def parse_args(argv):
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"configuration", help="Your YAML configuration file directories.", nargs="+"
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)
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return parser.parse_args(argv[1:])
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# Keep backward compatibility with the old command line format of
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# esphome <config> <command>.
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#
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# Unfortunately this can't be done by adding another configuration argument to the
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# main config parser, as argparse is greedy when parsing arguments, so in regular
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# usage it'll eat the command as the configuration argument and error out out
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# because it can't parse the configuration as a command.
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#
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# Instead, if parsing using the current format fails, construct an ad-hoc parser
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# that doesn't actually process the arguments, but parses them enough to let us
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# figure out if the old format is used. In that case, swap the command and
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# configuration in the arguments and retry with the normal parser (and raise
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# a deprecation warning).
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arguments = argv[1:]
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# On Python 3.9+ we can simply set exit_on_error=False in the constructor
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def _raise(x):
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raise argparse.ArgumentError(None, x)
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# First, try new-style parsing, but don't exit in case of failure
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try:
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# duplicate parser so that we can use the original one to raise errors later on
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current_parser = argparse.ArgumentParser(add_help=False, parents=[parser])
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current_parser.set_defaults(deprecated_argv_suggestion=None)
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current_parser.error = _raise
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return current_parser.parse_args(arguments)
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except argparse.ArgumentError:
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pass
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# Second, try compat parsing and rearrange the command-line if it succeeds
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# Disable argparse's built-in help option and add it manually to prevent this
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# parser from printing the help messagefor the old format when invoked with -h.
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compat_parser = argparse.ArgumentParser(parents=[options_parser], add_help=False)
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compat_parser.add_argument("-h", "--help", action="store_true")
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compat_parser.add_argument("configuration", nargs="*")
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compat_parser.add_argument(
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"command",
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choices=[
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"config",
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"compile",
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"upload",
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"logs",
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"run",
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"clean-mqtt",
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"wizard",
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"mqtt-fingerprint",
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"version",
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"clean",
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"dashboard",
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"vscode",
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"update-all",
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],
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)
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try:
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compat_parser.error = _raise
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result, unparsed = compat_parser.parse_known_args(argv[1:])
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last_option = len(arguments) - len(unparsed) - 1 - len(result.configuration)
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unparsed = [
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"--device" if arg in ("--upload-port", "--serial-port") else arg
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for arg in unparsed
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]
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arguments = (
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arguments[0:last_option]
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+ [result.command]
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+ result.configuration
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+ unparsed
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)
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deprecated_argv_suggestion = arguments
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except argparse.ArgumentError:
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# old-style parsing failed, don't suggest any argument
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deprecated_argv_suggestion = None
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# Finally, run the new-style parser again with the possibly swapped arguments,
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# and let it error out if the command is unparsable.
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parser.set_defaults(deprecated_argv_suggestion=deprecated_argv_suggestion)
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return parser.parse_args(arguments)
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def run_esphome(argv):
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@ -715,7 +725,7 @@ def run_esphome(argv):
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"and will be removed in the future. "
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)
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_LOGGER.warning("Please instead use:")
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_LOGGER.warning(" esphome %s", " ".join(args.deprecated_argv_suggestion[1:]))
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_LOGGER.warning(" esphome %s", " ".join(args.deprecated_argv_suggestion))
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if sys.version_info < (3, 7, 0):
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_LOGGER.error(
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