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#!/usr/bin/env python3 |
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"""Command-line interface.""" |
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import argparse |
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import logging |
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import sys |
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from . import CLI, DESCRIPTION, VERSION, commands, common, exceptions |
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log = logging.getLogger(__name__) |
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def main(args=None, function=None): # pylint: disable=too-many-statements |
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"""Process command-line arguments and run the program.""" |
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# Shared options |
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debug = argparse.ArgumentParser(add_help=False) |
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debug.add_argument('-V', '--version', action='version', version=VERSION) |
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group = debug.add_mutually_exclusive_group() |
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group.add_argument('-v', '--verbose', action='count', default=0, |
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help="enable verbose logging") |
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group.add_argument('-q', '--quiet', action='store_const', const=-1, |
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dest='verbose', help="only display errors and prompts") |
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project = argparse.ArgumentParser(add_help=False) |
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project.add_argument('-r', '--root', metavar='PATH', |
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help="root directory of the project") |
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depth = argparse.ArgumentParser(add_help=False) |
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depth.add_argument('-d', '--depth', type=common.positive_int, |
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default=5, metavar="NUM", |
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help="limit the number of dependency levels") |
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options = argparse.ArgumentParser(add_help=False) |
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options.add_argument('-f', '--force', action='store_true', |
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help="overwrite uncommitted changes in dependencies") |
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options.add_argument('-c', '--clean', action='store_true', |
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help="delete ignored files in dependencies") |
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shared = {'formatter_class': common.WideHelpFormatter} |
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# Main parser |
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parser = argparse.ArgumentParser(prog=CLI, description=DESCRIPTION, |
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parents=[debug], **shared) |
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subs = parser.add_subparsers(help="", dest='command', metavar="<command>") |
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# Init parser |
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info = "create a new config file for the project" |
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sub = subs.add_parser('init', description=info.capitalize() + '.', |
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help=info, parents=[debug], **shared) |
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# Install parser |
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info = "get the specified versions of all dependencies" |
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sub = subs.add_parser('install', description=info.capitalize() + '.', |
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help=info, parents=[debug, project, depth, options], |
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**shared) |
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sub.add_argument('name', nargs='*', |
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help="list of dependencies names to install") |
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sub.add_argument('-e', '--fetch', action='store_true', |
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help="always fetch the latest branches") |
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# Update parser |
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info = "update dependencies to the latest versions" |
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sub = subs.add_parser('update', description=info.capitalize() + '.', |
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help=info, parents=[debug, project, depth, options], |
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**shared) |
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sub.add_argument('name', nargs='*', |
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help="list of dependencies names to update") |
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sub.add_argument('-a', '--all', action='store_true', dest='recurse', |
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help="also update all nested dependencies") |
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sub.add_argument('-L', '--skip-lock', |
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action='store_false', dest='lock', default=None, |
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help="disable recording of updated versions") |
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# List parser |
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info = "display the current version of each dependency" |
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sub = subs.add_parser('list', description=info.capitalize() + '.', |
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help=info, parents=[debug, project, depth], **shared) |
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sub.add_argument('-D', '--fail-if-dirty', action='store_false', |
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dest='allow_dirty', |
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help="fail if a source has uncommitted changes") |
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# Lock parser |
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info = "lock the current version of each dependency" |
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sub = subs.add_parser('lock', description=info.capitalize() + '.', |
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help=info, parents=[debug, project], **shared) |
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sub.add_argument('name', nargs='*', |
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help="list of dependency names to lock") |
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# Uninstall parser |
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info = "delete all installed dependencies" |
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sub = subs.add_parser('uninstall', description=info.capitalize() + '.', |
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help=info, parents=[debug, project], **shared) |
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sub.add_argument('-f', '--force', action='store_true', |
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help="delete uncommitted changes in dependencies") |
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sub.add_argument('-k', '--keep-location', dest='keep_location', |
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default=False, action='store_true', |
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help="keep top level folder location") |
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# Show parser |
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info = "display the path of a dependency or internal file" |
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sub = subs.add_parser('show', description=info.capitalize() + '.', |
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help=info, parents=[debug, project], **shared) |
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sub.add_argument('name', nargs='*', |
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help="display the path of this dependency") |
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sub.add_argument('-c', '--config', action='store_true', |
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help="display the path of the config file") |
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sub.add_argument('-l', '--log', action='store_true', |
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help="display the path of the log file") |
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# Edit parser |
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info = "open the config file in the default editor" |
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sub = subs.add_parser('edit', description=info.capitalize() + '.', |
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help=info, parents=[debug, project], **shared) |
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# Parse arguments |
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namespace = parser.parse_args(args=args) |
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# Configure logging |
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common.configure_logging(namespace.verbose) |
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# Run the program |
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function, args, kwargs = _get_command(function, namespace) |
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if function: |
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_run_command(function, args, kwargs) |
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else: |
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parser.print_help() |
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sys.exit(1) |
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def _get_command(function, namespace): # pylint: disable=too-many-statements |
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args = [] |
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kwargs = {} |
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if namespace.command == 'init': |
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function = commands.init |
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elif namespace.command in ['install', 'update']: |
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function = getattr(commands, namespace.command) |
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args = namespace.name |
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kwargs.update(root=namespace.root, |
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depth=namespace.depth, |
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force=namespace.force, |
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clean=namespace.clean) |
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if namespace.command == 'install': |
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kwargs.update(fetch=namespace.fetch) |
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if namespace.command == 'update': |
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kwargs.update(recurse=namespace.recurse, |
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lock=namespace.lock) |
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elif namespace.command == 'list': |
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function = commands.display |
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kwargs.update(root=namespace.root, |
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depth=namespace.depth, |
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allow_dirty=namespace.allow_dirty) |
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elif namespace.command == 'lock': |
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function = getattr(commands, namespace.command) |
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args = namespace.name |
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kwargs.update(root=namespace.root) |
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elif namespace.command == 'uninstall': |
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function = commands.delete |
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kwargs.update(root=namespace.root, |
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force=namespace.force, |
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keep_location=namespace.keep_location) |
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elif namespace.command == 'show': |
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function = commands.show |
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args = namespace.name |
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kwargs.update(root=namespace.root) |
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if namespace.config: |
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args.append('__config__') |
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if namespace.log: |
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args.append('__log__') |
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elif namespace.command == 'edit': |
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function = commands.edit |
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kwargs.update(root=namespace.root) |
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return function, args, kwargs |
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def _run_command(function, args, kwargs): |
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success = False |
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exit_message = None |
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try: |
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log.debug("Running %s command...", getattr(function, '__name__', 'a')) |
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success = function(*args, **kwargs) |
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except KeyboardInterrupt: |
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log.debug("Command canceled") |
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except exceptions.UncommittedChanges as exception: |
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_show_error(exception) |
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exit_message = "Run again with '--force' to discard changes" |
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except exceptions.ScriptFailure as exception: |
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_show_error(exception) |
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exit_message = "Run again with '--force' to ignore script errors" |
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finally: |
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if exit_message: |
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common.show(exit_message, color='message') |
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common.newline() |
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if success: |
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log.debug("Command succeeded") |
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else: |
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log.debug("Command failed") |
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sys.exit(1) |
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def _show_error(exception): |
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# TODO: require level=, evaluate all calls to dedent() |
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common.dedent(0) |
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common.newline() |
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common.show(str(exception), color='error') |
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common.newline() |
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if __name__ == '__main__': # pragma: no cover (manual test) |
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main() |
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jacebrowning /
gitman
