Function svn_stream_readline 

pub unsafe extern "C" fn svn_stream_readline(
    stream: *mut svn_stream_t,
    stringbuf: *mut *mut svn_stringbuf_t,
    eol: *const c_char,
    eof: *mut svn_boolean_t,
    pool: *mut apr_pool_t,
) -> *mut svn_error_t

Allocate @a *stringbuf in @a pool, and read into it one line (terminated by @a eol) from @a stream. The line-terminator is read from the stream, but is not added to the end of the stringbuf. Instead, the stringbuf ends with a usual ‘\0’.

If @a stream runs out of bytes before encountering a line-terminator, then set @a *eof to @c TRUE, otherwise set @a *eof to FALSE.