Re: [xml] Encodings and Memory

[Daniel Veillard <veillard redhat com>]

On Wed, Jan 30, 2002 at 03:29:06PM -0500, fisty wrote:
>       (a) Save all characters < 128 as normal characters (7 bit) and
>       encode all characters >= 128 as entities (ie. &#266f;), or
>       (b) Save all characters as UTF-8 encoded.

  (A) is ascii
  (b) is UTF-8
  (c) is UTF-16

All XML parsers MUST be able to read document in those formats, that's
the recommended encodings.

> (2) Is there any way to decrease the amount of memory consumed while
> building the DOM tree?  Memory consumption is pretty small using a SAX
> reader, but writing some of my documents takes upwards of 18 megs of RAM
> to build the entire tree in memory. Is there any way to streamline this at
> all?

  No, or remove the parts of the tree you don't need. This can be done 
by playing with the SAX default handlers. I don't recommend it because
it requires a fairly good understanding of the libxml internals, and
works only if you need only a subpart known in advance of the tree.

Daniel

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