<s> """<STR_LIT>""" <EOL> import logging <EOL> import sys <EOL> import textwrap <EOL> logger = logging . getLogger ( __name__ ) <EOL> PREVIEW_SERVICES = [ <EOL> '<STR_LIT>' , <EOL> '<STR_LIT>' , <EOL> '<STR_LIT>' , <EOL> ] <EOL> def register_preview_commands ( events ) : <EOL> events . register ( '<STR_LIT>' , mark_as_preview ) <EOL> def mark_as_preview ( command_table , session , ** kwargs ) : <EOL> allowed_services = _get_allowed_services ( session ) <EOL> for preview_service in PREVIEW_SERVICES : <EOL> is_enabled = False <EOL> if preview_service in allowed_services : <EOL> logger . debug ( "<STR_LIT>" , <EOL> preview_service ) <EOL> is_enabled = True <EOL> original_command = command_table [ preview_service ] <EOL> preview_cls = type ( <EOL> '<STR_LIT>' , <EOL> ( PreviewModeCommandMixin , original_command . __class__ ) , { } ) <EOL> command_table [ preview_service ] = preview_cls ( <EOL> cli_name = original_command . name , <EOL> session = session , <EOL> service_name = original_command . service_model . service_name , <EOL> is_enabled = is_enabled ) <EOL> session . get_component ( '<STR_LIT>' ) . register_last ( <EOL> '<STR_LIT>' % preview_service , <EOL> update_description_with_preview ) <EOL> def update_description_with_preview ( help_command , ** kwargs ) : <EOL> style = help_command . doc . style <EOL> style . start_note ( ) <EOL> style . bold ( PreviewModeCommandMixin . HELP_SNIPPET . strip ( ) ) <EOL> style . doc . write ( "<STR_LIT>" ) <EOL> service_name = help_command . event_class . split ( '<STR_LIT:.>' ) [ <NUM_LIT:0> ] <EOL> style . code ( "<STR_LIT>" % service_name ) <EOL> style . end_note ( ) <EOL> def _get_allowed_services ( session ) : <EOL> allowed = [ ] <EOL> preview_services = session . full_config . get ( '<STR_LIT>' , { } ) <EOL> for preview , value in preview_services . items ( ) : <EOL> if value == '<STR_LIT:true>' : <EOL> allowed . append ( preview ) <EOL> return allowed <EOL> class PreviewModeCommandMixin ( object ) : <EOL> ENABLE_DOCS = textwrap . dedent ( """<STR_LIT>""" ) <EOL> HELP_SNIPPET = ( "<STR_LIT>" <EOL> "<STR_LIT>" ) <EOL> def __init__ ( self , * args , ** kwargs ) : <EOL> self . _is_enabled = kwargs . pop ( '<STR_LIT>' ) <EOL> super ( PreviewModeCommandMixin , self ) . __init__ ( * args , ** kwargs ) <EOL> def __call__ ( self , args , parsed_globals ) : <EOL> if self . _is_enabled or self . _is_help_command ( args ) : <EOL> return super ( PreviewModeCommandMixin , self ) . __call__ ( <EOL> args , parsed_globals ) <EOL> else : <EOL> return self . _display_opt_in_message ( ) <EOL> def _is_help_command ( self , args ) : <EOL> return args and args [ - <NUM_LIT:1> ] == '<STR_LIT>' <EOL> def _display_opt_in_message ( self ) : <EOL> sys . stderr . write ( self . HELP_SNIPPET ) <EOL> sys . stderr . write ( "<STR_LIT:\n>" ) <EOL> sys . stderr . write ( self . ENABLE_DOCS . format ( service = self . _service_name ) ) <EOL> return <NUM_LIT:1> </s>
