# -*- encoding: utf-8 -*-

class SubURI(object):

    def __init__(self, app):
        self.app = app

    def __call__(self, environ, start_response):

        script_name = environ.get('HTTP_X_SCRIPT_NAME')
        if script_name:
            environ['SCRIPT_NAME'] = script_name
            path_info = environ['PATH_INFO']
            if path_info.startswith(script_name):
                environ['PATH_INFO'] = path_info[len(script_name):]

        return self.app(environ, start_response)