function insertNode($path, $node)
{
$children = $node->childNodes;
$virtual = true;
$title = '';
$text = '';
$pos = 0;
while ($pos < $children->length && domNodeIsEmpty($children->item($pos))) {
$pos++;
}
if ($pos < $children->length) {
$item = $children->item($pos);
if ($item->nodeType == XML_ELEMENT_NODE && $item->tagName == 'h') {
$title = trim($item->firstChild->data);
$virtual = false;
$pos++;
}
}
while ($pos < $children->length && domNodeIsEmpty($children->item($pos))) {
$pos++;
}
if ($pos < $children->length) {
$item = $children->item($pos);
if ($item->nodeType == XML_TEXT_NODE) {
$text = trim($item->data);
$virtual = false;
$pos++;
}
}
if ($path != '') {
if ($node->hasAttribute('delete')) {
if (!$node->hasAttribute('id') || !$virtual) {
die('Malformed XML: delete tag has no id or is virtual');
}
$newPath = deleteParagraph(pathCombine($path, 1, $node->getAttribute('id')));
} else {
if ($node->hasAttribute('id')) {
if (!$virtual) {
$newPath = editParagraph(pathCombine($path, 1, $node->getAttribute('id')), $title, $text);
} else {
$newPath = pathCombine($path, 1, $node->getAttribute('id'));
}
} else {
if (!$virtual) {
$newPath = addParagraph($path, 't', $title, $text);
} else {
$newPath = addParagraph($path, 'f');
}
}
}
}
$lastPath = pathCombine($newPath, 0, '0');
while ($pos < $children->length && domNodeIsEmpty($children->item($pos))) {
$pos++;
}
while ($pos < $children->length) {
$lastPath = insertNode($lastPath, $children->item($pos++));
while ($pos < $children->length && domNodeIsEmpty($children->item($pos))) {
$pos++;
}
}
return $newPath;
}
function insertNodes($nodes, $pos, $subRel = false, $subPath = '')
{
$prevChild = false;
while ($pos < $nodes->length && domNodeIsEmpty($nodes->item($pos))) {
$pos++;
}
while ($pos < $nodes->length) {
if ($prevChild === false) {
$prevChild = insertNode($subRel, $subPath, $nodes->item($pos++));
} else {
$prevChild = insertNode($prevChild, '', $nodes->item($pos++));
}
while ($pos < $nodes->length && domNodeIsEmpty($nodes->item($pos))) {
$pos++;
}
}
return $prevChild;
}
