Hi Daniel. Thanks for your fast answer! On Thu, 17 Feb 2005 16:16:40 -0500, Daniel Veillard <[EMAIL PROTECTED]> wrote: > On Thu, Feb 17, 2005 at 08:59:24PM +0100, Aron Stansvik wrote: > > Hello xml readers. > > > > Because of some peoples misuse of XML, I'm now writing a simple > > wxWidgets application that needs to process huge XML documents. I've > > tested that the libxml2 Reader API can handle the load well. > > > > Now I want my application to give some kind of progress feedback to > > the user. Is there a way to obtain the number of bytes read when using > > a Reader obtained using the simple xmlReaderForFile() function, or > > will I have to set up my own custom I/O handlers with > > xmlReaderForIO()? I can't find any example usage of this function > > anywhere, and I having a bit of a hard time deciphering how it > > actually works. Googling for "xmlReaderForIO" only gives 10 hits (!). > > > > My plan is to just stat() the file for it's size before processing it, > > and then use the number of bytes read to calculate progress, so all I > > need is the position in the input stream that libxml2 uses. > > There is number of simplifications in your approach, like external > parsed entities, encoding conversions.
I know I know, it would be horribly inaccurate if it wasn't for the fact that I know the exact anatomy of the XML documents I'll be processing, they are very flat and homogenous. Now it'll just be, ehum, inaccurate :) The progress information isn't a dead requirement, just a bonus, and I don't feel like spending any more time implementing it than I have to. It won't have an ETA count, just a progress bar the poor user can look at every once in a while and see that it's doing something. > http://xmlsoft.org/html/libxml-parser.html#xmlByteConsumed > From a normal parser you can call this. This is more complex > than you may think. I don't think on can get the parsr from a reader > but the option exists. If I can't get the parser context from a reader, then the option of using xmlByteConsumed() doesn't exist. What option are you referring to? :/ > > Greatful for any advice and examples of using custom I/O with the > > Reader API. I've looked at the custom I/O code samples at xmlsoft.org, > > It's like the I/O from other APIs ! > > http://xmlsoft.org/xmlio.html#Example2 > http://xmlsoft.org/examples/index.html#InputOutput Ah, I somehow missed that first link, thanks. The color scheme and layout of xmlsoft.org isn't really top-notch IMHO ;) Thanks again. I'll have to think this over. How would you go about implementing coarse progress information for a reader? Aron _______________________________________________ xml mailing list, project page http://xmlsoft.org/ xml@gnome.org http://mail.gnome.org/mailman/listinfo/xml
