Re: [xml] Embedding images

[Adrian Feiguin <feiguin magnet fsu edu>]

> > > > How can I use libxml to embed a large pixmap in a file? I don't want to
> > > > use a different file for the image, I wan't to embed it in my main
> > > > document. Is that possible? How? Any documentation? What about embedding
> > > > BLOBs, like a gif file, is there any documentation/examples available?
> > >
> > > The "standard" way to do this is to use base64 encoding, and putting the
> > > data in the content of a tag. There is no direct support for decoding this
> > > in XML parsers, but it's pretty easy to do manually.
> >
> > Thanks for the info, can you give me a link to documentation/examples,
> > if any?
>
> XML-dev's archives are full of this sort of thing, as a Google search for
> "XML base64 binary" will turn up.

Thanks again! I've been doing something similar, but using hexadecimal
expressions to represent the pixels data. That means that each value from
0-65535 can ve represented by 4 bytes (0-9/A-F), while using base64 this
can be reduced to 3. However I found it problematic when I use the SAX
interface to parse the file. The charactersSAXFunc callback 
returns a string with all the character between tags, and if the string
is too long (apparently len = 1000), my program crashes. This will be the
subject of my next mail to the list, maybe someone can give me a
suggestion.
Thanks!
<ADRIAN>