def _validate_entry_point()

in xar/xar_builder.py [0:0]

• 15 lines of code
• 5 McCabe index (conditional complexity)

    def _validate_entry_point(self, entry_point):
        """Validates that the module specified in `entry_point` exists."""

        def ensure_exists(module):
            basename = os.path.join(self.LIBRARY_PATH, *module.split("."))
            if os.path.isdir(self._staging.absolute(basename)):
                basename = basename + "/__init__"
            for ext in py_util.PYTHON_EXTS:
                if self._staging.exists(basename + ext):
                    return
            raise self.InvalidEntryPointError("Module '%s' not found in XAR" % module)

        module, function = py_util.parse_entry_point(entry_point)

        parent_end = len(module)
        while parent_end > 0:
            parent_module = module[:parent_end]
            ensure_exists(parent_module)
            parent_end = parent_module.rfind(".")