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<?php
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/**
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* This is a helper class for PHP's XML parser, which implements
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* behaviour for the parser, namely how it show handle start
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* tags, end tags, and character data.
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*
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*/
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class drupal_export_parser {
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var $node = array();
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var $current_tag = '';
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var $current_title = '';
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var $current_body = '';
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var $current_teaser = '';
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var $current_parent = 0;
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var $current_nodeid = 0;
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var $action;
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var $phpimport;
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var $end_elt_callback;
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var $start_elt_callback;
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/**
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*
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*/
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function drupal_export_parser($start_callback = '', $end_callback = '') {
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global $end_elt_callback;
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global $start_elt_callback;
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global $node;
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$node = array();
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$this->end_elt_callback = $end_callback;
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$this->start_elt_callback = $start_callback;
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$end_elt_callback = $end_callback;
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$start_elt_callback = $start_callback;
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if (DEBUG > 1) {
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echo "constructor for class drupal_export_parser\n";
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echo "setting end_callback to '$end_elt_callback'\n";
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echo "setting start_callback to '$start_elt_callback'\n";
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}
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}
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/**
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* This function is called each time the XML parser encounters
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* an opening tag.
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*/
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function start_element($parser, $tag, $attributes) {
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global $current_tag;
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global $node;
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global $current_body;
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global $current_teaser;
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global $current_parent;
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global $current_nodeid;
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global $start_elt_callback;
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if (DEBUG > 0) { echo "start_element($tag)...\n";
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if (count($attributes) > 0) {
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print_r($attributes);
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}
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}
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if ('book' == $tag) {
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$current_body = '';
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$current_teaser = '';
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$current_title = '';
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}
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if ('node' == $tag) {
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// prepare to create node; save node id attribute;
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// save content (body) in a node
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$tnode = new node();
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$nodeid = preg_replace('@^(node-)(\d+)$@', '\2', $attributes['id']);
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$tnode->set_id($nodeid);
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$tnode->set_body($current_body);
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$current_body = '';
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$current_nodeid = $tnode->id;
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$tnode->set_parent($current_parent);
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if (DEBUG > 2) {
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echo "current node id: $current_nodeid\n";
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echo "current parent id:$current_parent\n";
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echo "parent of $current_nodeid is $current_parent\n";
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}
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if (DEBUG > 1) { echo "creating node $current_nodeid\n"; }
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// push the node
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// echo "<b>push</b> node .. count before = ". count($node) ."\n";
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array_push($node, $tnode);
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// echo "count after: ". count($node) . "\n";
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//echo "node is: ";
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//print_r($node);
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$current_parent = $current_nodeid;
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if (function_exists($start_elt_callback)) {
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// echo "calling callback $start_elt_callback\n";
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call_user_func($start_elt_callback, $tnode, $tnode->id, $current_parent, $this->action, $this->phpimport);
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}
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else {
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// echo "can't call callback: $start_elt_callback!\n";
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}
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}
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if ('title' == $tag) {
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$current_title = '';
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}
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if ('nodeinfo' == $tag) {
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// echo "nodeinfo: pop node ..$node \n";
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// echo "<b>pop</b> node .. count before = ". count($node) ."\n";
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$tnode = array_pop($node);
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// echo "count after: ". count($node) . "\n";
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$tnode->set_depth($attributes['depth']);
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$tnode->set_weight($attributes['weight']);
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$tnode->set_md5_body($attributes['md5_body']);
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$tnode->set_nodetype($attributes['type']);
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$tnode->set_author($attributes['author']);
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$tnode->set_uid($attributes['uid']);
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$tnode->set_created($attributes['created']);
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$tnode->set_status($attributes['status']);
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$tnode->set_format($attributes['format']);
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$tnode->set_sticky($attributes['sticky']);
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$tnode->set_promote($attributes['promote']);
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// echo "<b>push</b> node .. count before = ". count($node) ."\n";
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array_push($node, $tnode);
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// echo "count after: ". count($node) . "\n";
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$current_body = '';
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}
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if ('content' == $tag) {
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$current_body = '';
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}
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if ('teaser' == $tag) {
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$current_teaser = '';
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}
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$current_tag = $tag;
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}
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/**
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* This function is called each time the XML parser encounters
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* a closing tag.
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*/
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function end_element($parser, $tag) {
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global $current_title;
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global $current_body;
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global $current_teaser;
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global $current_tag;
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global $current_parent;
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global $end_elt_callback;
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global $node;
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if (DEBUG > 0) { echo "end_element($current_tag)...\n"; }
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if ('book' == $tag) {
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$current_body = '';
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$current_title = '';
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}
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if ('node' == $tag) {
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// echo "<b>pop</b> node .. count before = ". count($node) ."\n";
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$tnode = array_pop($node);
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// echo "count after: ". count($node) . "\n";
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if (function_exists($end_elt_callback)) {
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// echo "calling callback $end_elt_callback\n";
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call_user_func($end_elt_callback, $tnode, $tnode->id, $tnode->parent, $this->action, $this->phpimport);
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}
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else {
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// echo "can't call callback: $end_elt_callback!\n";
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}
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// Done with this node
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// reset to start new body;
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$current_body = '';
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$current_teaser = '';
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$current_tag = '';
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$current_parent = $tnode->get_parent();
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}
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if ('title' == $tag) {
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// Set the title of tnode
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// echo "end_element: pop node ..\n";
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// print_r($node);
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// echo "<b>pop</b> node .. count before = ". count($node) ."\n";
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$tnode = array_pop($node);
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// echo "count after: ". count($node) . "\n";
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// echo "end_element: tnode = \n";
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// print_r($node);
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$tnode->set_title($current_title);
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// push the node
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// echo "<b>push</b> node .. count before = ". count($node) ."\n";
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array_push($node, $tnode);
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// echo "count after: ". count($node) . "\n";
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$current_tag = '';
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$current_title = '';
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}
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if ('content' == $tag) {
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// echo "<b>pop</b> node .. count before = ". count($node) ."\n";
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$tnode = array_pop($node);
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// echo "count after: ". count($node) . "\n";
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$tnode -> set_body($current_body);
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// push the node
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// echo "<b>push</b> node .. count before = ". count($node) ."\n";
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array_push($node, $tnode);
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// echo "count after: ". count($node) . "\n";
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// start new body;
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$current_body = '';
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$current_teaser = '';
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$current_tag = '';
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}
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if ('teaser' == $tag) {
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// echo "<b>pop</b> node .. count before = ". count($node) ."\n";
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$tnode = array_pop($node);
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// echo "count after: ". count($node) . "\n";
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$tnode -> set_teaser($current_teaser);
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// push the node
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// echo "<b>push</b> node .. count before = ". count($node) ."\n";
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array_push($node, $tnode);
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// echo "count after: ". count($node) . "\n";
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// start new teaser;
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$current_teaser = '';
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$current_tag = '';
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}
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if ('nodeinfo' == $tag) {
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// echo "done nodeinfo: $current_body\n";
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// start new body;
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$current_body = '';
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$current_teaser = '';
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$current_tag = '';
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}
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}
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/**
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* This function is called each time the XML parser encounters
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* character data (e.g., the contents of a tag)
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*/
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function character_data($parser, $data) {
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global $current_title;
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global $current_body;
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global $current_teaser;
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global $current_tag;
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global $node;
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if (DEBUG > 3) { echo "character_data($current_tag"; };
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if (DEBUG > 4) { echo ", $data"; };
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if (DEBUG > 3) { echo ")\n"; };
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if ('title' == $current_tag) {
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$current_title .= $data;
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// echo "char data:current_title = $current_title;<br/>";
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}
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else if ('content' == $current_tag) {
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$current_body .= $data;
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}
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else if ('teaser' == $current_tag) {
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$current_teaser .= $data;
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}
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else if ('nodeinfo' == $current_tag) {
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// echo "chardata: nodeinfo: $data";
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$current_body .= $data;
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}
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else {
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// print "cdata:";
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}
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}
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}
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?>
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