RE: [xliff] RE: [xliff-inline] Req 1.15 Representation of invalid XML characters

["Rodolfo M. Raya" <rmraya@maxprograms.com>]

Hi Yves,

Here are a couple of changes in the XML Schema that may help:

1) Create a restriction for the data type

  <xs:simpleType name="hexValue">
    <xs:restriction base="xs:hexBinary">
      <xs:pattern value="[0000-0010FFFF]"/>
    </xs:restriction>
  </xs:simpleType>

2) Define the element using the restriction

  <xs:element name="cp">
    <!-- Code Point -->
    <xs:complexType mixed="false">
      <xs:attribute name="hex" use="required" type="xlf:hexValue"/>
    </xs:complexType>    
  </xs:element>

The above definition allows all values from 0000 to 0010FFFF, which includes character ranges that are valid in XML. IMHO, valid XML characters should not be allowed.

Regards,
Rodolfo
--
Rodolfo M. Raya   <rmraya@maxprograms.com>
Maxprograms      http://www.maxprograms.com


> -----Original Message-----
> From: Yves Savourel [mailto:ysavourel@enlaso.com]
> Sent: Monday, September 12, 2011 1:58 PM
> To: xliff-inline@lists.oasis-open.org
> Cc: xliff@lists.oasis-open.org
> Subject: [xliff] RE: [xliff-inline] Req 1.15 Representation of invalid XML
> characters
> 
> Hi David, Steven, Helena, all
> 
> In our discussion about how to represent characters invalid in XML in XLIFF
> we've adopted an element similar to LDML's cp.
> 
> In the processing expectation we are trying to decide what the user agent is
> suppose to do when the hex attribute value is invalid (e.g. hex='qwerty').
> 
> Christian suggested to reach out to LDML for some ideas as this may have
> been discussed there already.
> David, Stevens, Helena: Any thought?
> 
> I'm guessing Stevens may be more involved with LDML than David or Helena
> (pure speculation from me).
> I'm adding the TC mailing list on the thread, so he can see and post an answer
> if needed. (joining the SC to be able to post there is the other option)
> 
> Below is an extract of our latest exchange.
> You can see all the emails here:
> http://lists.oasis-open.org/archives/xliff-inline/
> (search for the one with "1.15 Representation of invalid XML characters" in
> their title)
> 
> 
> > Maybe: "If the value of the hex attribute is invalid,
> > the Readers MUST generate an error and MAY terminate
> > the process. This specification does not prescribe how
> > invalid <cp> values are represented in the parsed content."
> >
> > But I still think it would be better to have an expected
> > behavior: it helps interoperability. U+FFFD seems to be
> > applicable for such case according to
> >
> http://en.wikipedia.org/wiki/Replacement_character#Replacement_charact
> er).
> >
> CL> I would be tempted to reach out to someone from LDML
> CL> (or general Unicode) to get guidance.
> 
> 
> Any pointer would be welcome,
> 
> Cheers,
> -yves
> 
> 
> 
> 
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