[xml] changing the contents of a node

[Stefan Kost <kost imn htwk-leipzig de>]

hi,

I am trying to do the following processing :
<main>
  <i18n>
     unlocalized-text
  </i18n>
</main>
should change to
<main>
  localized text
</main>

To achive this I walk down the doc-tree. Whenever I find a text-node (cur) I get the parent (i18n) and the 
grandparent (main).
Now it tried dozen ways to add a text-child to main. Can someone point me on the proper way to do it

1.
xmlUnlinkNode(cur);xmlFreeNode(cur);
xmlUnlinkNode(i18n);xmlFreeNode(i18n);
if(post_i18n) {
  xmlAddChild(main,xmlNewText(post_i18n));
}


2.
xmlUnlinkNode(cur);xmlFreeNode(cur);
if(post_i18n) {
  i18n->type=XML_TEXT_NODE;
  xmlNodeSetContent(i18n,post_i18n);
}

Stefan
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