def _placeholders(self, value, placeholders):
""" Applies a set of placeholders to the given settings recursively
See http://sublimetext.info/docs/en/reference/build_systems.html#variables
"""
if isinstance(value, str) and "$" in value:
value = Template(value).safe_substitute(placeholders)
elif isinstance(value, dict):
for key, val in value.items():
value[key] = self._placeholders(val, placeholders)
elif isinstance(value, list):
value = [self._placeholders(x, placeholders) for x in value]
return value
