easy_update.py 文件源码

def parse_eb(self, file_name, primary):
        """ interpret easyconfig file with 'exec'.  Interperting fails if
        constants that are not defined within the easyconfig file.  Add
        undefined constants to <header>.
        """
        header = 'SOURCE_TGZ  = "%(name)s-%(version)s.tgz"\n'
        header += 'SOURCE_TAR_GZ = "%(name)s-%(version)s.tar.gz"\n'
        header += self.prolog
        code = header

        eb = imp.new_module("easyconfig")
        with open(file_name, "r") as f:
            code += f.read()
        try:
            exec (code, eb.__dict__)
        except Exception as err:
            print("interperting easyconfig error: %s" % err)
            sys.exit(1)
        if primary:     # save original text of source code
            self.code = code
            self.ptr_head = len(header)
        return eb