EnvConfig.Variable.EnvExpander Class Reference

Inheritance diagram for EnvConfig.Variable.EnvExpander:

Collaboration diagram for EnvConfig.Variable.EnvExpander:

Public Member Functions
def	__init__ (self, env)
def	isTarget (self, variable)
def	process (self, variable, value)
Public Member Functions inherited from EnvConfig.Variable.VariableProcessor
def	__init__ (self, env)
def	isTarget (self, variable)
def	process (self, variable, value)
def	__call__ (self, variable, value)

Private Member Functions
def	_repl (self, value)

Private Attributes
	_exp

Detailed Description

Variable processor to expand the reference to environment variables.

Definition at line 63 of file Variable.py.

Constructor & Destructor Documentation

def EnvConfig.Variable.EnvExpander.__init__	(		self,
			env
	)

Definition at line 67 of file Variable.py.

    def __init__(self, env):
        super(EnvExpander, self).__init__(env)
        self._exp = re.compile(r"\$([A-Za-z_][A-Za-z0-9_]*)|\$\(([A-Za-z_][A-Za-z0-9_]*)\)|\$\{([A-Za-z_][A-Za-z0-9_]*)\}|\$\{(\.)\}")

Member Function Documentation

def EnvConfig.Variable.EnvExpander._repl (   self,   value  )

private

Definition at line 75 of file Variable.py.

    def _repl(self, value):
        m = self._exp.search(value)
        if m:
            try:
                value = (value[:m.start()]
                         + str(self._env[filter(None, m.groups())[0]])
                         + value[m.end():])
            except KeyError, k:
                logging.debug('KeyError: %s unknown while expanding %s', k, value)
                return value
            return self._repl(value)
        else:
            return value

def EnvConfig.Variable.EnvExpander.isTarget	(		self,
			variable
	)

Definition at line 71 of file Variable.py.

    def isTarget(self, variable):
        return (super(EnvExpander, self).isTarget(variable)
                and variable.expandVars)

def EnvConfig.Variable.EnvExpander.process	(		self,
			variable,
			value
	)

Definition at line 89 of file Variable.py.

    def process(self, variable, value):
        if isinstance(value, str):
            value = self._repl(value)
        else:
            # expand only in the elements that are new
            old_values = set(variable.val)
            value = map(lambda v: v if v in old_values else self._repl(v), value)
        return value

Member Data Documentation

EnvConfig.Variable.EnvExpander._exp

private

Definition at line 69 of file Variable.py.

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The documentation for this class was generated from the following file:

• InstallArea/x86_64-slc6-gcc49-opt/scripts/EnvConfig/Variable.py