Re: [xml] libxml incompatibility in version 2

On Mon, Jun 11, 2001 at 01:30:16AM -0500, Chema Celorio wrote:
Hello dv,

I am porting a very small app to the 2.0 platform.
This is a piece of code that was working fine with the old
libxml  :

      doc = xmlParseFile (full_path);
      if (doc == NULL) {
              g_warning ("File not found or file with errors [%s]", full_path);
              return NULL;
      if (doc->root == NULL) {
              g_warning ("Invalid xml File, tree empty [%s]", full_path);
              xmlFreeDoc (doc);
              return NULL;

it is now failing in doc->root == NULL and giving a the warning :
"Invalid xml File, tree empty [/usr/share/glade2/widgets/catalog.xml]"
For some reason doc->root is now NULL.

It is the same xml file that I was using with the old xml. Libxml is not
generating any warnings at all. Do you have any idea on what can be
wrong ?

   This should not compile, in libxml2 doc->root does not exist anymore.
As explained in the migration doc:
    "Upgrading libxml client code from 1.x to 2.x"

 Section "How to fix libxml-1.x code:", item 3:

 "Use xmlDocGetRootElement(doc) to get the root element of a document."

  So I think:
    - you should double check your headers, because doc->root should
      not compile
    - once checked, use root = xmlDocGetRootElement(doc); to find the
      root node of the document.
 and in general check the upgrade doc, it should help :-)


Daniel Veillard      | Red Hat Network
veillard redhat com  | libxml Gnome XML XSLT toolkit | Rpmfind RPM search engine

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