Python RankedValue.choose方法代码示例

# 需要导入模块: from pants.option.ranked_value import RankedValue [as 别名]
# 或者: from pants.option.ranked_value.RankedValue import choose [as 别名]
  def _compute_default(self, dest, kwargs):
    """Compute the default value to use for an option's registration.

    The source of the default value is chosen according to the ranking in RankedValue.
    """
    config_section = 'DEFAULT' if self._scope == GLOBAL_SCOPE else self._scope
    env_var = 'PANTS_{0}_{1}'.format(config_section.upper().replace('.', '_'), dest.upper())
    value_type = kwargs.get('type', str)
    env_val_str = self._env.get(env_var) if self._env else None

    env_val = None if env_val_str is None else value_type(env_val_str)
    config_val = self._config.get(config_section, dest, default=None) if self._config else None
    hardcoded_val = kwargs.get('default')
    return RankedValue.choose(None, env_val, config_val, hardcoded_val)

# 需要导入模块: from pants.option.ranked_value import RankedValue [as 别名]
# 或者: from pants.option.ranked_value.RankedValue import choose [as 别名]
  def _compute_default(self, dest, kwargs):
    """Compute the default value to use for an option's registration.

    The source of the default value is chosen according to the ranking in RankedValue.
    """
    config_section = 'DEFAULT' if self._scope == GLOBAL_SCOPE else self._scope
    udest = dest.upper()
    if self._scope == GLOBAL_SCOPE:
      # For convenience, we allow three forms of env var for global scope options.
      # The fully-specified env var is PANTS_DEFAULT_FOO, which is uniform with PANTS_<SCOPE>_FOO
      # for all the other scopes.  However we also allow simply PANTS_FOO. And if the option name
      # itself starts with 'pants-' then we also allow simply FOO. E.g., PANTS_WORKDIR instead of
      # PANTS_PANTS_WORKDIR or PANTS_DEFAULT_PANTS_WORKDIR. We take the first specified value we
      # find, in this order: PANTS_DEFAULT_FOO, PANTS_FOO, FOO.
      env_vars = ['PANTS_DEFAULT_{0}'.format(udest), 'PANTS_{0}'.format(udest)]
      if udest.startswith('PANTS_'):
        env_vars.append(udest)
    else:
      sanitized_env_var_scope = self._ENV_SANITIZER_RE.sub('_', config_section.upper())
      env_vars = ['PANTS_{0}_{1}'.format(sanitized_env_var_scope, udest)]
    value_type = self.str_to_bool if is_boolean_flag(kwargs) else kwargs.get('type', str)
    env_val_str = None
    if self._env:
      for env_var in env_vars:
        if env_var in self._env:
          env_val_str = self._env.get(env_var)
          break
    env_val = None if env_val_str is None else value_type(env_val_str)
    if kwargs.get('action') == 'append':
      config_val_strs = self._config.getlist(config_section, dest) if self._config else None
      config_val = (None if config_val_strs is None else
                    [value_type(config_val_str) for config_val_str in config_val_strs])
      default = []
    else:
      config_val_str = (self._config.get(config_section, dest, default=None)
                        if self._config else None)
      config_val = None if config_val_str is None else value_type(config_val_str)
      default = None
    hardcoded_val = kwargs.get('default')
    return RankedValue.choose(None, env_val, config_val, hardcoded_val, default)

# 需要导入模块: from pants.option.ranked_value import RankedValue [as 别名]
# 或者: from pants.option.ranked_value.RankedValue import choose [as 别名]
  def _compute_default(self, dest, kwargs):
    """Compute the default value to use for an option's registration.

    The source of the default value is chosen according to the ranking in RankedValue.
    """
    is_fromfile = kwargs.get('fromfile', False)
    action = kwargs.get('action')
    if is_fromfile and action:
      raise ParseError('Cannot fromfile {} with an action ({}) in scope {}'
                       .format(dest, action, self._scope))

    config_section = 'DEFAULT' if self._scope == GLOBAL_SCOPE else self._scope
    udest = dest.upper()
    if self._scope == GLOBAL_SCOPE:
      # For convenience, we allow three forms of env var for global scope options.
      # The fully-specified env var is PANTS_DEFAULT_FOO, which is uniform with PANTS_<SCOPE>_FOO
      # for all the other scopes.  However we also allow simply PANTS_FOO. And if the option name
      # itself starts with 'pants-' then we also allow simply FOO. E.g., PANTS_WORKDIR instead of
      # PANTS_PANTS_WORKDIR or PANTS_DEFAULT_PANTS_WORKDIR. We take the first specified value we
      # find, in this order: PANTS_DEFAULT_FOO, PANTS_FOO, FOO.
      env_vars = ['PANTS_DEFAULT_{0}'.format(udest), 'PANTS_{0}'.format(udest)]
      if udest.startswith('PANTS_'):
        env_vars.append(udest)
    else:
      sanitized_env_var_scope = self._ENV_SANITIZER_RE.sub('_', config_section.upper())
      env_vars = ['PANTS_{0}_{1}'.format(sanitized_env_var_scope, udest)]

    value_type = self.str_to_bool if is_boolean_flag(kwargs) else kwargs.get('type', str)

    env_val_str = None
    if self._env:
      for env_var in env_vars:
        if env_var in self._env:
          env_val_str = self._env.get(env_var)
          break

    def expand(val_str):
      if is_fromfile and val_str and val_str.startswith('@') and not val_str.startswith('@@'):
        fromfile = val_str[1:]
        try:
          with open(fromfile) as fp:
            return fp.read().strip()
        except IOError as e:
          raise self.FromfileError('Failed to read {} from file {}: {}'.format(dest, fromfile, e))
      else:
        # Support a literal @ for fromfile values via @@.
        return val_str[1:] if is_fromfile and val_str.startswith('@@') else val_str

    if is_fromfile:
      kwargs['type'] = lambda flag_val_str: value_type(expand(flag_val_str))  # Expand flag values.

    env_val = None if env_val_str is None else value_type(expand(env_val_str))  # Expand env values.

    config_val = None
    if action == 'append':
      config_val_strs = self._config.getlist(config_section, dest) if self._config else None
      if config_val_strs is not None:
        config_val = [value_type(config_val_str) for config_val_str in config_val_strs]
      default = []
    else:
      config_val_str = (self._config.get(config_section, dest, default=None)
                        if self._config else None)
      if config_val_str is not None:
        config_val = value_type(expand(config_val_str))  # Expand config values.
      default = None

    hardcoded_val = kwargs.get('default')  # We don't expand hard coded defaults.
    return RankedValue.choose(None, env_val, config_val, hardcoded_val, default)