Re: [babel-devel] [cffi-devel] utf-16

On Mon, May 31, 2010 at 1:32 PM, Helmut Eller heller@common-lisp.net wrote:

Is this assertion

(assert  (equal  (cffi:with-foreign-string (data "foobar" :encoding :utf-16)    (cffi:foreign-string-to-lisp data :count 6 :encoding :utf-16))  "foobar"))

expected to fail?

FOREIGN-STRING-ALLOC currently doesn't insert BOM markers and the :UTF-16 encoder uses native endianness. The :UTF-16 decoder defaults to big endian when a BOM marker is not present, as recommended by the Unicode specification. That's why the assertion fails.

One solution is to use :UTF-16BE or :UTF-16LE explicitly, which unfortunately aren't implemented in Babel yet.