J Napoli wrote:
Hi,
While testing XQilla with Xerces-C 2.8.0 I was getting XML parse
exceptions trying to run the basic examples. Looking into the code I
noticed that XQilla by default passes an empty string (where val != NULL
&& XMLString::stringLen(val) == 0) to
XMLScanner::setExternalSchemaLocation and
setExternalNoNamespaceSchemaLocation. This seems to trick the scanner
into thinking there is an external schema to parse.
SGMLScanner::resolveSchemaGrammar then throws a parse exception because
it tries to parse a URL constructed by concatenating the current working
directory with the empty string.
Is this an XQilla or Xerces problem? Should Xerces ignore 0-length
strings here?
I don't think we've ever defined the semantics of the API, so we should do
that. We'll have to support ignoring a 0-length string, since there's no
way to "unset" it if we don't, unless we fix the code. However, I do
think it would be better to use a null pointer to indicate no location,
rather than a null pointer or a 0-length string.
Dave
