diff options
Diffstat (limited to 'waftools/features.py')
-rw-r--r-- | waftools/features.py | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/waftools/features.py b/waftools/features.py new file mode 100644 index 0000000000..1385d41dbf --- /dev/null +++ b/waftools/features.py @@ -0,0 +1,69 @@ +from waflib.Options import OptionsContext + +class Feature(object): + def __init__(self, group, feature): + self.group = group + self.identifier, self.attributes = feature['name'], feature + + def add_options(self): + [self.add_option(option_rule) for option_rule in self.option_rules()] + + def add_option(self, rule): + self.group.add_option(self.option(rule['state']), + action=rule['action'], + default=rule['default'], + dest=self.storage(), + help=self.help(rule['state'])) + + # private + def option_rules(self): + return { + 'autodetect': [ + {'state': 'disable', 'action': 'store_false', 'default': None}, + {'state': 'enable', 'action': 'store_true', 'default': None}, + ], + 'disable': [ + {'state': 'disable', 'action': 'store_false', 'default': False}, + {'state': 'enable', 'action': 'store_true', 'default': False}, + ], + 'enable': [ + {'state': 'disable', 'action': 'store_false', 'default': True}, + ], + }[self.behaviour()] + + + def behaviour(self): + if 'default' in self.attributes: + return self.attributes['default'] + else: + return 'autodetect' + + + def option(self, state): + return "--{0}-{1}".format(state, self.identifier) + + def help(self, state): + return "{0} {1} [{2}]" \ + .format(state, self.attributes['desc'], self.behaviour()) + + def storage(self): + return "enable_{0}".format(self.identifier) + +def add_feature(group, feature): + Feature(group, feature).add_options() + +def parse_features(opt, group_name, features): + def is_feature(dep): + return dep['name'].find('--') >= 0 + + def strip_feature(dep): + dep['name'] = dep['name'].lstrip('-') + return dep + + features = [strip_feature(dep) for dep in features if is_feature(dep)] + group = opt.get_option_group(group_name) + if not group: + group = opt.add_option_group(group_name) + [add_feature(group, feature) for feature in features] + +OptionsContext.parse_features = parse_features |