func: svn_stringbuf_t *svn_stringbuf_createf(apr_pool_t *pool,const char *fmt,... ) svn_stringbuf_t * str ; va_list ap ; str = svn_stringbuf_createv ( pool , fmt , ap ); svn_stringbuf_t *svn_stringbuf_createv(apr_pool_t *pool,const char *fmt,va_list ap) char * data = apr_pvsprintf ( pool , fmt , ap ) ; apr_size_t size = strlen ( data ) ; new_string -> len = size; new_string -> blocksize = size + 1; new_string -> pool = pool; return new_string ; 