Function array_output_pull 

pub unsafe fn array_output_pull(
    array_output: ArrayOutput,
    buf: *mut u8,
    buf_len: Size,
) -> Result<Size, CryptoErrno>

Copy the content of an array_output object into an application-allocated buffer.

Multiple calls to that function can be made in order to consume the data in a streaming fashion, if necessary.

The function returns the number of bytes that were actually copied. 0 means that the end of the stream has been reached. The total size always matches the output of array_output_len().

The handle is automatically closed after all the data has been consumed.

Example usage:

let len = array_output_len(output_handle)?;
let mut out = vec![0u8; len];
array_output_pull(output_handle, &mut out)?;