[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

The SAX interface of the xml4c2 parser

• From: Steinar Bang <sb@m...>
• To: xml-dev@i...
• Date: 22 Oct 1999 12:48:36 +0200

I've taken a look at the SAX interface of the IBM xml4c2 parser
        http://www.alphaworks.ibm.com/tech/xml4c

In short, I don't like it.

I don't like returning "const XMLCh*" instead of "const wstring&" or
"const string&" (even though an approach like this would be more
efficient for an expat wrapper).  I don't need the index out of range
warning capability, because I iterate through the AttributeList
entries anyway.

I don't like giving an AttributeList& argument to
DocumentHandler::startElement(), instead of an AttributeList*, because 
this rules out the possibility of passing a null-pointer on for the
cases that don't have an attribute list.

Hm... so far there is AFAIK 4 incompatible C++ SAX implementations
around.  The IBM one, and:
        http://www.jezuk.demon.co.uk/SAX/
        http://www.cgocable.net/~mlepage/minion/doc/
        http://www.vivid-creations.com/free/sax.h

I also have an expat-wrapper-based C++ SAX implementation, similar to
Jez Higgins' one (I use a "sax_" prefix instead of namespaces, since
it has to run on compilers without namespace support).  No time to
create a web page for it yet.

My reasons for going SAX, was:
 1. it seemed silly to invent my own abstraction when lots of work had 
    already gone into the SAX design
 2. make it possible to drop-in replace the parser

But #2 can only be achieved if the different SAX implementations have
the same API, and this is not currently the case.

I'll go whatever way the majority goes, unless it leads towards the
IBM implementation.

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i...
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To unsubscribe, mailto:majordomo@i... the following message;
unsubscribe xml-dev
To subscribe to the digests, mailto:majordomo@i... the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@i...)

• Follow-Ups:
  • Re: The SAX interface of the xml4c2 parser
    • From: "Richard Anderson" <rja@a...>

• Prev by Date: Re: C++ SAX Parser objects and a push InputSource
• Next by Date: Re: The SAX interface of the xml4c2 parser
• Previous by thread: C++ SAX Parser objects and a push InputSource
• Next by thread: Re: The SAX interface of the xml4c2 parser
• Index(es):
  • Date
  • Thread