Re: Tokenizing mixed content

I am working on a conversion script transforming from a prior DTD to a
new DTD, and as part of this transformation, we are hoping to parse some
mixed content into separate nested elements. The content is |
delimited, but I am having a tough time coming up with a way to group
the text and sibling elements. What follows are some permutations of
input and expected output:

INPUT:

<argument> "AUTO | NONE | METADATA"</argument>

OUTPUT:

<argument><choice>AUTO</choice><choice>NONE</choice><choice>METADATA</choice>
"</argument>

INPUT:

<argument><userSuppliedValue>dimension</userSuppliedValue> |
<userSuppliedValue>dimension</userSuppliedValue>%</argument>

OUTPUT:

<argument><choice><userSuppliedValue>dimension</userSuppliedValue></choice><c
hoice><userSuppliedValue>dimension></userSuppliedValue>%</choice></argument>

INPUT:

<argument>#BYVAL<userSuppliedValue>n</userSuppliedValue> |
#BYVAL(<userSuppliedValue>BY-variable-name</userSuppliedValue>)</argument>

OUTPUT:

<argument><choice>#BYVAL<userSuppliedValue>n</userSuppliedValue></choice><cho
ice>#BYVAL(<userSuppliedValue>BY-variable-name</userSuppliedValue>)</choice><
/argument>

Ive got access to XSL 2, and possibly XSL3 if necessary.

A two pass transformation that first processes text nodes to "convert"
the pipe character into an element (e.g. <pipe/>) and then in second
step uses for-each-group group-ending-with="pipe" should help.