danielebarchiesi@4: <?php
danielebarchiesi@4: /**
danielebarchiesi@4:  * ARC2 RDF/XML Parser
danielebarchiesi@4:  *
danielebarchiesi@4:  * @author Benjamin Nowack <bnowack@semsol.com>
danielebarchiesi@4:  * @license http://arc.semsol.org/license
danielebarchiesi@4:  * @homepage <http://arc.semsol.org/>
danielebarchiesi@4:  * @package ARC2
danielebarchiesi@4: */
danielebarchiesi@4: 
danielebarchiesi@4: ARC2::inc('RDFParser');
danielebarchiesi@4: 
danielebarchiesi@4: class ARC2_RDFXMLParser extends ARC2_RDFParser {
danielebarchiesi@4: 
danielebarchiesi@4:   function __construct($a, &$caller) {
danielebarchiesi@4:     parent::__construct($a, $caller);
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   function __init() {/* reader */
danielebarchiesi@4:     parent::__init();
danielebarchiesi@4:     $this->encoding = $this->v('encoding', false, $this->a);
danielebarchiesi@4:     $this->state = 0;
danielebarchiesi@4:     $this->x_lang = '';
danielebarchiesi@4:     $this->x_base = $this->base;
danielebarchiesi@4:     $this->xml = 'http://www.w3.org/XML/1998/namespace';
danielebarchiesi@4:     $this->rdf = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
danielebarchiesi@4:     $this->nsp = array($this->xml => 'xml', $this->rdf => 'rdf');
danielebarchiesi@4:     $this->s_stack = array();
danielebarchiesi@4:     $this->s_count = 0;
danielebarchiesi@4:     $this->target_encoding = '';
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4: 
danielebarchiesi@4:   function parse($path, $data = '', $iso_fallback = false) {
danielebarchiesi@4:     /* reader */
danielebarchiesi@4:     if (!$this->v('reader')) {
danielebarchiesi@4:       ARC2::inc('Reader');
danielebarchiesi@4:       $this->reader = new ARC2_Reader($this->a, $this);
danielebarchiesi@4:     }
danielebarchiesi@4:     $this->reader->setAcceptHeader('Accept: application/rdf+xml; q=0.9, */*; q=0.1');
danielebarchiesi@4:     $this->reader->activate($path, $data);
danielebarchiesi@4:     $this->x_base = isset($this->a['base']) && $this->a['base'] ? $this->a['base'] : $this->reader->base;
danielebarchiesi@4:     /* xml parser */
danielebarchiesi@4:     $this->initXMLParser();
danielebarchiesi@4:     /* parse */
danielebarchiesi@4:     $first = true;
danielebarchiesi@4:     while ($d = $this->reader->readStream()) {
danielebarchiesi@4:       if (!$this->keep_time_limit) @set_time_limit($this->v('time_limit', 60, $this->a));
danielebarchiesi@4:       if ($iso_fallback && $first) {
danielebarchiesi@4:         $d = '<?xml version="1.0" encoding="ISO-8859-1"?>' . "\n" . preg_replace('/^\<\?xml [^\>]+\?\>\s*/s', '', $d);
danielebarchiesi@4:         $first = false;
danielebarchiesi@4:       }
danielebarchiesi@4:       if (!xml_parse($this->xml_parser, $d, false)) {
danielebarchiesi@4:         $error_str = xml_error_string(xml_get_error_code($this->xml_parser));
danielebarchiesi@4:         $line = xml_get_current_line_number($this->xml_parser);
danielebarchiesi@4:         $this->tmp_error = 'XML error: "' . $error_str . '" at line ' . $line . ' (parsing as ' . $this->getEncoding() . ')';
danielebarchiesi@4:         if (!$iso_fallback && preg_match("/Invalid character/i", $error_str)) {
danielebarchiesi@4:           xml_parser_free($this->xml_parser);
danielebarchiesi@4:           unset($this->xml_parser);
danielebarchiesi@4:           $this->reader->closeStream();
danielebarchiesi@4:           $this->__init();
danielebarchiesi@4:           $this->encoding = 'ISO-8859-1';
danielebarchiesi@4:           unset($this->xml_parser);
danielebarchiesi@4:           unset($this->reader);
danielebarchiesi@4:           return $this->parse($path, $data, true);
danielebarchiesi@4:         }
danielebarchiesi@4:         else {
danielebarchiesi@4:           return $this->addError($this->tmp_error);
danielebarchiesi@4:         }
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     $this->target_encoding = xml_parser_get_option($this->xml_parser, XML_OPTION_TARGET_ENCODING);
danielebarchiesi@4:     xml_parser_free($this->xml_parser);
danielebarchiesi@4:     $this->reader->closeStream();
danielebarchiesi@4:     unset($this->reader);
danielebarchiesi@4:     return $this->done();
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function initXMLParser() {
danielebarchiesi@4:     if (!isset($this->xml_parser)) {
danielebarchiesi@4:       $enc = preg_match('/^(utf\-8|iso\-8859\-1|us\-ascii)$/i', $this->getEncoding(), $m) ? $m[1] : 'UTF-8';
danielebarchiesi@4:       $parser = xml_parser_create_ns($enc, '');
danielebarchiesi@4:       xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0);
danielebarchiesi@4:       xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
danielebarchiesi@4:       xml_set_element_handler($parser, 'open', 'close');
danielebarchiesi@4:       xml_set_character_data_handler($parser, 'cdata');
danielebarchiesi@4:       xml_set_start_namespace_decl_handler($parser, 'nsDecl');
danielebarchiesi@4:       xml_set_object($parser, $this);
danielebarchiesi@4:       $this->xml_parser = $parser;
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function getEncoding($src = 'config') {
danielebarchiesi@4:     if ($src == 'parser') {
danielebarchiesi@4:       return $this->target_encoding;
danielebarchiesi@4:     }
danielebarchiesi@4:     elseif (($src == 'config') && $this->encoding) {
danielebarchiesi@4:       return $this->encoding;
danielebarchiesi@4:     }
danielebarchiesi@4:     return $this->reader->getEncoding();
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function getTriples() {
danielebarchiesi@4:     return $this->v('triples', array());
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   function countTriples() {
danielebarchiesi@4:     return $this->t_count;
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function pushS(&$s) {
danielebarchiesi@4:     $s['pos'] = $this->s_count;
danielebarchiesi@4:     $this->s_stack[$this->s_count] = $s;
danielebarchiesi@4:     $this->s_count++;
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   function popS(){/* php 4.0.x-safe */
danielebarchiesi@4:     $r = array();
danielebarchiesi@4:     $this->s_count--;
danielebarchiesi@4:     for ($i = 0, $i_max = $this->s_count; $i < $i_max; $i++) {
danielebarchiesi@4:       $r[$i] = $this->s_stack[$i];
danielebarchiesi@4:     }
danielebarchiesi@4:     $this->s_stack = $r;
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   function updateS($s) {
danielebarchiesi@4:     $this->s_stack[$s['pos']] = $s;
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   function getParentS() {
danielebarchiesi@4:     return ($this->s_count && isset($this->s_stack[$this->s_count - 1])) ? $this->s_stack[$this->s_count - 1] : false;
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   function getParentXBase() {
danielebarchiesi@4:     if ($p = $this->getParentS()) {
danielebarchiesi@4:       return isset($p['p_x_base']) && $p['p_x_base'] ? $p['p_x_base'] : (isset($p['x_base']) ? $p['x_base'] : '');
danielebarchiesi@4:     }
danielebarchiesi@4:     return $this->x_base;
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   function getParentXLang() {
danielebarchiesi@4:     if ($p = $this->getParentS()) {
danielebarchiesi@4:       return isset($p['p_x_lang']) && $p['p_x_lang'] ? $p['p_x_lang'] : (isset($p['x_lang']) ? $p['x_lang'] : '');
danielebarchiesi@4:     }
danielebarchiesi@4:     return $this->x_lang;
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function addT($s, $p, $o, $s_type, $o_type, $o_dt = '', $o_lang = '') {
danielebarchiesi@4:     //echo "-----\nadding $s / $p / $o\n-----\n";
danielebarchiesi@4:     $t = array('s' => $s, 'p' => $p, 'o' => $o, 's_type' => $s_type, 'o_type' => $o_type, 'o_datatype' => $o_dt, 'o_lang' => $o_lang);
danielebarchiesi@4:     if ($this->skip_dupes) {
danielebarchiesi@4:       $h = md5(serialize($t));
danielebarchiesi@4:       if (!isset($this->added_triples[$h])) {
danielebarchiesi@4:         $this->triples[$this->t_count] = $t;
danielebarchiesi@4:         $this->t_count++;
danielebarchiesi@4:         $this->added_triples[$h] = true;
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     else {
danielebarchiesi@4:       $this->triples[$this->t_count] = $t;
danielebarchiesi@4:       $this->t_count++;
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   function reify($t, $s, $p, $o, $s_type, $o_type, $o_dt = '', $o_lang = '') {
danielebarchiesi@4:     $this->addT($t, $this->rdf.'type', $this->rdf.'Statement', 'uri', 'uri');
danielebarchiesi@4:     $this->addT($t, $this->rdf.'subject', $s, 'uri', $s_type);
danielebarchiesi@4:     $this->addT($t, $this->rdf.'predicate', $p, 'uri', 'uri');
danielebarchiesi@4:     $this->addT($t, $this->rdf.'object', $o, 'uri', $o_type, $o_dt, $o_lang);
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function open($p, $t, $a) {
danielebarchiesi@4:     //echo "state is $this->state\n";
danielebarchiesi@4:     //echo "opening $t\n";
danielebarchiesi@4:     switch($this->state) {
danielebarchiesi@4:       case 0: return $this->h0Open($t, $a);
danielebarchiesi@4:       case 1: return $this->h1Open($t, $a);
danielebarchiesi@4:       case 2: return $this->h2Open($t, $a);
danielebarchiesi@4:       case 4: return $this->h4Open($t, $a);
danielebarchiesi@4:       case 5: return $this->h5Open($t, $a);
danielebarchiesi@4:       case 6: return $this->h6Open($t, $a);
danielebarchiesi@4:       default: $this->addError('open() called at state ' . $this->state . ' in '.$t);
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   function close($p, $t) {
danielebarchiesi@4:     //echo "state is $this->state\n";
danielebarchiesi@4:     //echo "closing $t\n";
danielebarchiesi@4:     switch($this->state){
danielebarchiesi@4:       case 1: return $this->h1Close($t);
danielebarchiesi@4:       case 2: return $this->h2Close($t);
danielebarchiesi@4:       case 3: return $this->h3Close($t);
danielebarchiesi@4:       case 4: return $this->h4Close($t);
danielebarchiesi@4:       case 5: return $this->h5Close($t);
danielebarchiesi@4:       case 6: return $this->h6Close($t);
danielebarchiesi@4:       default: $this->addError('close() called at state ' . $this->state . ' in '.$t);
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   function cdata($p, $d) {
danielebarchiesi@4:     //echo "state is $this->state\n";
danielebarchiesi@4:     //echo "cdata\n";
danielebarchiesi@4:     switch($this->state){
danielebarchiesi@4:       case 4: return $this->h4Cdata($d);
danielebarchiesi@4:       case 6: return $this->h6Cdata($d);
danielebarchiesi@4:       default: return false;
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   function nsDecl($p, $prf, $uri) {
danielebarchiesi@4:     $this->nsp[$uri] = isset($this->nsp[$uri]) ? $this->nsp[$uri] : $prf;
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function h0Open($t, $a) {
danielebarchiesi@4:     $this->x_lang = $this->v($this->xml.'lang', $this->x_lang, $a);
danielebarchiesi@4:     $this->x_base = $this->calcURI($this->v($this->xml.'base', $this->x_base, $a));
danielebarchiesi@4:     $this->state = 1;
danielebarchiesi@4:     if ($t !== $this->rdf.'RDF') {
danielebarchiesi@4:       $this->h1Open($t, $a);
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4: 
danielebarchiesi@4:   function h1Open($t, $a) {
danielebarchiesi@4:     $s = array(
danielebarchiesi@4:       'x_base' => isset($a[$this->xml.'base']) ? $this->calcURI($a[$this->xml.'base']) : $this->getParentXBase(), 
danielebarchiesi@4:       'x_lang' => isset($a[$this->xml.'lang']) ? $a[$this->xml.'lang'] : $this->getParentXLang(),
danielebarchiesi@4:       'li_count' => 0,
danielebarchiesi@4:     );
danielebarchiesi@4:     /* ID */
danielebarchiesi@4:     if (isset($a[$this->rdf.'ID'])) {
danielebarchiesi@4:       $s['type'] = 'uri';
danielebarchiesi@4:       $s['value'] = $this->calcURI('#'.$a[$this->rdf.'ID'], $s['x_base']);
danielebarchiesi@4:     }
danielebarchiesi@4:     /* about */
danielebarchiesi@4:     elseif (isset($a[$this->rdf.'about'])) {
danielebarchiesi@4:       $s['type'] = 'uri';
danielebarchiesi@4:       $s['value'] = $this->calcURI($a[$this->rdf.'about'], $s['x_base']);
danielebarchiesi@4:     }
danielebarchiesi@4:     /* bnode */
danielebarchiesi@4:     else {
danielebarchiesi@4:       $s['type'] = 'bnode';
danielebarchiesi@4:       if (isset($a[$this->rdf.'nodeID'])) {
danielebarchiesi@4:         $s['value'] = '_:'.$a[$this->rdf.'nodeID'];
danielebarchiesi@4:       }
danielebarchiesi@4:       else {
danielebarchiesi@4:         $s['value'] = $this->createBnodeID();
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     /* sub-node */
danielebarchiesi@4:     if ($this->state === 4) {
danielebarchiesi@4:       $sup_s = $this->getParentS();
danielebarchiesi@4:       /* new collection */
danielebarchiesi@4:       if (isset($sup_s['o_is_coll']) && $sup_s['o_is_coll']) {
danielebarchiesi@4:         $coll = array('value' => $this->createBnodeID(), 'type' => 'bnode', 'is_coll' => true, 'x_base' => $s['x_base'], 'x_lang' => $s['x_lang']);
danielebarchiesi@4:         $this->addT($sup_s['value'], $sup_s['p'], $coll['value'], $sup_s['type'], $coll['type']);
danielebarchiesi@4:         $this->addT($coll['value'], $this->rdf . 'first', $s['value'], $coll['type'], $s['type']);
danielebarchiesi@4:         $this->pushS($coll);
danielebarchiesi@4:       }
danielebarchiesi@4:       /* new entry in existing coll */
danielebarchiesi@4:       elseif (isset($sup_s['is_coll']) && $sup_s['is_coll']) {
danielebarchiesi@4:         $coll = array('value' => $this->createBnodeID(), 'type' => 'bnode', 'is_coll' => true, 'x_base' => $s['x_base'], 'x_lang' => $s['x_lang']);
danielebarchiesi@4:         $this->addT($sup_s['value'], $this->rdf . 'rest', $coll['value'], $sup_s['type'], $coll['type']);
danielebarchiesi@4:         $this->addT($coll['value'], $this->rdf . 'first', $s['value'], $coll['type'], $s['type']);
danielebarchiesi@4:         $this->pushS($coll);
danielebarchiesi@4:       }
danielebarchiesi@4:       /* normal sub-node */
danielebarchiesi@4:       elseif(isset($sup_s['p']) && $sup_s['p']) {
danielebarchiesi@4:         $this->addT($sup_s['value'], $sup_s['p'], $s['value'], $sup_s['type'], $s['type']);
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     /* typed node */
danielebarchiesi@4:     if ($t !== $this->rdf.'Description') {
danielebarchiesi@4:       $this->addT($s['value'], $this->rdf.'type', $t, $s['type'], 'uri');
danielebarchiesi@4:     }
danielebarchiesi@4:     /* (additional) typing attr */
danielebarchiesi@4:     if (isset($a[$this->rdf.'type'])) {
danielebarchiesi@4:       $this->addT($s['value'], $this->rdf.'type', $a[$this->rdf.'type'], $s['type'], 'uri');
danielebarchiesi@4:     }
danielebarchiesi@4:     /* Seq|Bag|Alt */
danielebarchiesi@4:     if (in_array($t, array($this->rdf.'Seq', $this->rdf.'Bag', $this->rdf.'Alt'))) {
danielebarchiesi@4:       $s['is_con'] = true;
danielebarchiesi@4:     }
danielebarchiesi@4:     /* any other attrs (skip rdf and xml, except rdf:_, rdf:value, rdf:Seq) */
danielebarchiesi@4:     foreach($a as $k => $v) {
danielebarchiesi@4:       if (((strpos($k, $this->xml) === false) && (strpos($k, $this->rdf) === false)) || preg_match('/(\_[0-9]+|value|Seq|Bag|Alt|Statement|Property|List)$/', $k)) {
danielebarchiesi@4:         if (strpos($k, ':')) {
danielebarchiesi@4:           $this->addT($s['value'], $k, $v, $s['type'], 'literal', '', $s['x_lang']);
danielebarchiesi@4:         }
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     $this->pushS($s);
danielebarchiesi@4:     $this->state = 2;
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   /*  */
danielebarchiesi@4: 
danielebarchiesi@4:   function h2Open($t, $a) {
danielebarchiesi@4:     $s = $this->getParentS();
danielebarchiesi@4:     foreach (array('p_x_base', 'p_x_lang', 'p_id', 'o_is_coll') as $k) {
danielebarchiesi@4:       unset($s[$k]);
danielebarchiesi@4:     }
danielebarchiesi@4:     /* base */
danielebarchiesi@4:     if (isset($a[$this->xml.'base'])) {
danielebarchiesi@4:       $s['p_x_base'] = $this->calcURI($a[$this->xml.'base'], $s['x_base']);
danielebarchiesi@4:     }
danielebarchiesi@4:     $b = isset($s['p_x_base']) && $s['p_x_base'] ? $s['p_x_base'] : $s['x_base'];
danielebarchiesi@4:     /* lang */
danielebarchiesi@4:     if (isset($a[$this->xml.'lang'])) {
danielebarchiesi@4:       $s['p_x_lang'] = $a[$this->xml.'lang'];
danielebarchiesi@4:     }
danielebarchiesi@4:     $l = isset($s['p_x_lang']) && $s['p_x_lang'] ? $s['p_x_lang'] : $s['x_lang'];
danielebarchiesi@4:     /* adjust li */
danielebarchiesi@4:     if ($t === $this->rdf.'li') {
danielebarchiesi@4:       $s['li_count']++;
danielebarchiesi@4:       $t = $this->rdf.'_'.$s['li_count'];
danielebarchiesi@4:     }
danielebarchiesi@4:     /* set p */
danielebarchiesi@4:     $s['p'] = $t;
danielebarchiesi@4: 		/* reification */
danielebarchiesi@4:     if (isset($a[$this->rdf.'ID'])) {
danielebarchiesi@4:       $s['p_id'] = $a[$this->rdf.'ID'];
danielebarchiesi@4:     }
danielebarchiesi@4:     $o = array('value' => '', 'type' => '', 'x_base' => $b, 'x_lang' => $l);
danielebarchiesi@4:     /* resource/rdf:resource */
danielebarchiesi@4:     if (isset($a['resource'])) {
danielebarchiesi@4:       $a[$this->rdf . 'resource'] = $a['resource'];
danielebarchiesi@4:       unset($a['resource']);
danielebarchiesi@4:     }
danielebarchiesi@4:     if (isset($a[$this->rdf.'resource'])) {
danielebarchiesi@4:       $o['value'] = $this->calcURI($a[$this->rdf.'resource'], $b);
danielebarchiesi@4:       $o['type'] = 'uri';
danielebarchiesi@4:       $this->addT($s['value'], $s['p'], $o['value'], $s['type'], $o['type']);
danielebarchiesi@4:       /* type */
danielebarchiesi@4:       if (isset($a[$this->rdf.'type'])) {
danielebarchiesi@4:         $this->addT($o['value'], $this->rdf.'type', $a[$this->rdf.'type'], 'uri', 'uri');
danielebarchiesi@4:       }
danielebarchiesi@4:       /* reification */
danielebarchiesi@4:       if (isset($s['p_id'])) {
danielebarchiesi@4:         $this->reify($this->calcURI('#'.$s['p_id'], $b), $s['value'], $s['p'], $o['value'], $s['type'], $o['type']);
danielebarchiesi@4:         unset($s['p_id']);
danielebarchiesi@4:       }
danielebarchiesi@4:       $this->state = 3;
danielebarchiesi@4:     }
danielebarchiesi@4:     /* named bnode */
danielebarchiesi@4:     elseif (isset($a[$this->rdf.'nodeID'])) {
danielebarchiesi@4:       $o['value'] = '_:' . $a[$this->rdf.'nodeID'];
danielebarchiesi@4:       $o['type'] = 'bnode';
danielebarchiesi@4:       $this->addT($s['value'], $s['p'], $o['value'], $s['type'], $o['type']);
danielebarchiesi@4:       $this->state = 3;
danielebarchiesi@4:       /* reification */
danielebarchiesi@4:       if (isset($s['p_id'])) {
danielebarchiesi@4:         $this->reify($this->calcURI('#'.$s['p_id'], $b), $s['value'], $s['p'], $o['value'], $s['type'], $o['type']);
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     /* parseType */
danielebarchiesi@4:     elseif (isset($a[$this->rdf.'parseType'])) {
danielebarchiesi@4:       if ($a[$this->rdf.'parseType'] === 'Literal') {
danielebarchiesi@4:         $s['o_xml_level'] = 0;
danielebarchiesi@4:         $s['o_xml_data'] = '';
danielebarchiesi@4:         $s['p_xml_literal_level'] = 0;
danielebarchiesi@4:         $s['ns'] = array();
danielebarchiesi@4:         $this->state = 6;
danielebarchiesi@4:       }
danielebarchiesi@4:       elseif ($a[$this->rdf.'parseType'] === 'Resource') {
danielebarchiesi@4:         $o['value'] = $this->createBnodeID();
danielebarchiesi@4:         $o['type'] = 'bnode';
danielebarchiesi@4:         $o['has_closing_tag'] = 0;
danielebarchiesi@4:         $this->addT($s['value'], $s['p'], $o['value'], $s['type'], $o['type']);
danielebarchiesi@4:         $this->pushS($o);
danielebarchiesi@4:         /* reification */
danielebarchiesi@4:         if (isset($s['p_id'])) {
danielebarchiesi@4:           $this->reify($this->calcURI('#'.$s['p_id'], $b), $s['value'], $s['p'], $o['value'], $s['type'], $o['type']);
danielebarchiesi@4:           unset($s['p_id']);
danielebarchiesi@4:         }
danielebarchiesi@4:         $this->state = 2;
danielebarchiesi@4:       }
danielebarchiesi@4:       elseif ($a[$this->rdf.'parseType'] === 'Collection') {
danielebarchiesi@4:         $s['o_is_coll'] = true;
danielebarchiesi@4:         $this->state = 4;
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     /* sub-node or literal */
danielebarchiesi@4:     else {
danielebarchiesi@4:       $s['o_cdata'] = '';
danielebarchiesi@4:       if (isset($a[$this->rdf.'datatype'])) {
danielebarchiesi@4:         $s['o_datatype'] = $a[$this->rdf.'datatype'];
danielebarchiesi@4:       }
danielebarchiesi@4:       $this->state = 4;
danielebarchiesi@4:     }
danielebarchiesi@4:     /* any other attrs (skip rdf and xml) */
danielebarchiesi@4:     foreach($a as $k => $v) {
danielebarchiesi@4:       if (((strpos($k, $this->xml) === false) && (strpos($k, $this->rdf) === false)) || preg_match('/(\_[0-9]+|value)$/', $k)) {
danielebarchiesi@4:         if (strpos($k, ':')) {
danielebarchiesi@4:           if (!$o['value']) {
danielebarchiesi@4:             $o['value'] = $this->createBnodeID();
danielebarchiesi@4:             $o['type'] = 'bnode';
danielebarchiesi@4:             $this->addT($s['value'], $s['p'], $o['value'], $s['type'], $o['type']);
danielebarchiesi@4:           }
danielebarchiesi@4:           /* reification */
danielebarchiesi@4:           if (isset($s['p_id'])) {
danielebarchiesi@4:             $this->reify($this->calcURI('#'.$s['p_id'], $b), $s['value'], $s['p'], $o['value'], $s['type'], $o['type']);
danielebarchiesi@4:             unset($s['p_id']);
danielebarchiesi@4:           }
danielebarchiesi@4:           $this->addT($o['value'], $k, $v, $o['type'], 'literal');
danielebarchiesi@4:           $this->state = 3;
danielebarchiesi@4:         }
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     $this->updateS($s);
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   /*  */
danielebarchiesi@4: 
danielebarchiesi@4:   function h4Open($t, $a) {
danielebarchiesi@4:     return $this->h1Open($t, $a);
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4: 
danielebarchiesi@4:   function h5Open($t, $a) {
danielebarchiesi@4:     $this->state = 4;
danielebarchiesi@4:     return $this->h4Open($t, $a);
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function h6Open($t, $a) {
danielebarchiesi@4:     $s = $this->getParentS();
danielebarchiesi@4:     $data = isset($s['o_xml_data']) ? $s['o_xml_data'] : '';
danielebarchiesi@4:     $ns = isset($s['ns']) ? $s['ns'] : array();
danielebarchiesi@4:     $parts = $this->splitURI($t);
danielebarchiesi@4:     if ((count($parts) === 1) || empty($parts[1])) {
danielebarchiesi@4:       $data .= '<'.$t;
danielebarchiesi@4:     }
danielebarchiesi@4:     else {
danielebarchiesi@4:       $ns_uri = $parts[0];
danielebarchiesi@4:       $name = $parts[1];
danielebarchiesi@4:       if (!isset($this->nsp[$ns_uri])) {
danielebarchiesi@4:         foreach ($this->nsp as $tmp1 => $tmp2) {
danielebarchiesi@4:           if (strpos($t, $tmp1) === 0) {
danielebarchiesi@4:             $ns_uri = $tmp1;
danielebarchiesi@4:             $name = substr($t, strlen($tmp1));
danielebarchiesi@4:             break;
danielebarchiesi@4:           }
danielebarchiesi@4:         }
danielebarchiesi@4:       }
danielebarchiesi@4:       $nsp = $this->nsp[$ns_uri];
danielebarchiesi@4:       $data .= $nsp ? '<' . $nsp . ':' . $name : '<' . $name;
danielebarchiesi@4:       /* ns */
danielebarchiesi@4:       if (!isset($ns[$nsp.'='.$ns_uri]) || !$ns[$nsp.'='.$ns_uri]) {
danielebarchiesi@4:         $data .= $nsp ? ' xmlns:'.$nsp.'="'.$ns_uri.'"' : ' xmlns="'.$ns_uri.'"';
danielebarchiesi@4:         $ns[$nsp.'='.$ns_uri] = true;
danielebarchiesi@4:         $s['ns'] = $ns;
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     foreach ($a as $k => $v) {
danielebarchiesi@4:       $parts = $this->splitURI($k);
danielebarchiesi@4:       if (count($parts) === 1) {
danielebarchiesi@4:         $data .= ' '.$k.'="'.$v.'"';
danielebarchiesi@4:       }
danielebarchiesi@4:       else {
danielebarchiesi@4:         $ns_uri = $parts[0];
danielebarchiesi@4:         $name = $parts[1];
danielebarchiesi@4:         $nsp = $this->v($ns_uri, '', $this->nsp);
danielebarchiesi@4:         $data .= $nsp ? ' '.$nsp.':'.$name.'="'.$v.'"' : ' '.$name.'="'.$v.'"' ;
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     $data .= '>';
danielebarchiesi@4:     $s['o_xml_data'] = $data;
danielebarchiesi@4:     $s['o_xml_level'] = isset($s['o_xml_level']) ? $s['o_xml_level'] + 1 : 1;
danielebarchiesi@4:     if ($t == $s['p']) {/* xml container prop */
danielebarchiesi@4:       $s['p_xml_literal_level'] = isset($s['p_xml_literal_level']) ? $s['p_xml_literal_level'] + 1 : 1;
danielebarchiesi@4:     }
danielebarchiesi@4:     $this->updateS($s);
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   /*  */
danielebarchiesi@4: 
danielebarchiesi@4:   function h1Close($t) {/* end of doc */
danielebarchiesi@4:     $this->state = 0;
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function h2Close($t) {/* expecting a prop, getting a close */
danielebarchiesi@4:     if ($s = $this->getParentS()) {
danielebarchiesi@4:       $has_closing_tag = (isset($s['has_closing_tag']) && !$s['has_closing_tag']) ? 0 : 1;
danielebarchiesi@4:       $this->popS();
danielebarchiesi@4:       $this->state = 5;
danielebarchiesi@4:       if ($s = $this->getParentS()) {/* new s */
danielebarchiesi@4:         if (!isset($s['p']) || !$s['p']) {/* p close after collection|parseType=Resource|node close after p close */
danielebarchiesi@4:           $this->state = $this->s_count ? 4 : 1;
danielebarchiesi@4:           if (!$has_closing_tag) {
danielebarchiesi@4:             $this->state = 2;
danielebarchiesi@4:           }
danielebarchiesi@4:         }
danielebarchiesi@4:         elseif (!$has_closing_tag) {
danielebarchiesi@4:           $this->state = 2;
danielebarchiesi@4:         }
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function h3Close($t) {/* p close */
danielebarchiesi@4:     $this->state = 2;
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function h4Close($t) {/* empty p | pClose after cdata | pClose after collection */
danielebarchiesi@4:     if ($s = $this->getParentS()) {
danielebarchiesi@4:       $b = isset($s['p_x_base']) && $s['p_x_base'] ? $s['p_x_base'] : (isset($s['x_base']) ? $s['x_base'] : '');
danielebarchiesi@4:       if (isset($s['is_coll']) && $s['is_coll']) {
danielebarchiesi@4:         $this->addT($s['value'], $this->rdf . 'rest', $this->rdf . 'nil', $s['type'], 'uri');
danielebarchiesi@4:         /* back to collection start */
danielebarchiesi@4:         while ((!isset($s['p']) || ($s['p'] != $t))) {
danielebarchiesi@4:           $sub_s = $s;
danielebarchiesi@4:           $this->popS();
danielebarchiesi@4:           $s = $this->getParentS();
danielebarchiesi@4:         }
danielebarchiesi@4:         /* reification */
danielebarchiesi@4:         if (isset($s['p_id']) && $s['p_id']) {
danielebarchiesi@4:           $this->reify($this->calcURI('#'.$s['p_id'], $b), $s['value'], $s['p'], $sub_s['value'], $s['type'], $sub_s['type']);
danielebarchiesi@4:         }
danielebarchiesi@4:         unset($s['p']);
danielebarchiesi@4:         $this->updateS($s);
danielebarchiesi@4:       }
danielebarchiesi@4:       else {
danielebarchiesi@4:         $dt = isset($s['o_datatype']) ? $s['o_datatype'] : '';
danielebarchiesi@4:         $l = isset($s['p_x_lang']) && $s['p_x_lang'] ? $s['p_x_lang'] : (isset($s['x_lang']) ? $s['x_lang'] : '');
danielebarchiesi@4:         $o = array('type' => 'literal', 'value' => $s['o_cdata']);
danielebarchiesi@4:         $this->addT($s['value'], $s['p'], $o['value'], $s['type'], $o['type'], $dt, $l);
danielebarchiesi@4:         /* reification */
danielebarchiesi@4:         if (isset($s['p_id']) && $s['p_id']) {
danielebarchiesi@4:           $this->reify($this->calcURI('#'.$s['p_id'], $b), $s['value'], $s['p'], $o['value'], $s['type'], $o['type'], $dt, $l);
danielebarchiesi@4:         }
danielebarchiesi@4:         unset($s['o_cdata']);
danielebarchiesi@4:         unset($s['o_datatype']);
danielebarchiesi@4:         unset($s['p']);
danielebarchiesi@4:         $this->updateS($s);
danielebarchiesi@4:       }
danielebarchiesi@4:       $this->state = 2;
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function h5Close($t) {/* p close */
danielebarchiesi@4:     if ($s = $this->getParentS()) {
danielebarchiesi@4:       unset($s['p']);
danielebarchiesi@4:       $this->updateS($s);
danielebarchiesi@4:       $this->state = 2;
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4: 
danielebarchiesi@4:   /*  */
danielebarchiesi@4: 
danielebarchiesi@4:   function h6Close($t) {
danielebarchiesi@4:     if ($s = $this->getParentS()) {
danielebarchiesi@4:       $l = isset($s['p_x_lang']) && $s['p_x_lang'] ? $s['p_x_lang'] : (isset($s['x_lang']) ? $s['x_lang'] : '');
danielebarchiesi@4:       $data = $s['o_xml_data'];
danielebarchiesi@4:       $level = $s['o_xml_level'];
danielebarchiesi@4:       if ($level === 0) {/* pClose */
danielebarchiesi@4:         $this->addT($s['value'], $s['p'], trim($data, ' '), $s['type'], 'literal', $this->rdf.'XMLLiteral', $l);
danielebarchiesi@4:         unset($s['o_xml_data']);
danielebarchiesi@4:         $this->state = 2;
danielebarchiesi@4:       }
danielebarchiesi@4:       else {
danielebarchiesi@4:         $parts = $this->splitURI($t);
danielebarchiesi@4:         if ((count($parts) === 1) || empty($parts[1])) {
danielebarchiesi@4:           $data .= '</'.$t.'>';
danielebarchiesi@4:         }
danielebarchiesi@4:         else {
danielebarchiesi@4:           $ns_uri = $parts[0];
danielebarchiesi@4:           $name = $parts[1];
danielebarchiesi@4:           if (!isset($this->nsp[$ns_uri])) {
danielebarchiesi@4:             foreach ($this->nsp as $tmp1 => $tmp2) {
danielebarchiesi@4:               if (strpos($t, $tmp1) === 0) {
danielebarchiesi@4:                 $ns_uri = $tmp1;
danielebarchiesi@4:                 $name = substr($t, strlen($tmp1));
danielebarchiesi@4:                 break;
danielebarchiesi@4:               }
danielebarchiesi@4:             }
danielebarchiesi@4:           }
danielebarchiesi@4:           $nsp = $this->nsp[$ns_uri];
danielebarchiesi@4:           $data .= $nsp ? '</'.$nsp.':'.$name.'>' : '</'.$name.'>';
danielebarchiesi@4:         }
danielebarchiesi@4:         $s['o_xml_data'] = $data;
danielebarchiesi@4:         $s['o_xml_level'] = $level - 1;
danielebarchiesi@4:         if ($t == $s['p']) {/* xml container prop */
danielebarchiesi@4:           $s['p_xml_literal_level']--;
danielebarchiesi@4:         }
danielebarchiesi@4:       }
danielebarchiesi@4:       $this->updateS($s);
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4:   function h4Cdata($d) {
danielebarchiesi@4:     if ($s = $this->getParentS()) {
danielebarchiesi@4:       $s['o_cdata'] = isset($s['o_cdata']) ? $s['o_cdata'] . $d : $d;
danielebarchiesi@4:       $this->updateS($s);
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4: 
danielebarchiesi@4:   function h6Cdata($d) {
danielebarchiesi@4:     if ($s = $this->getParentS()) {
danielebarchiesi@4:       if (isset($s['o_xml_data']) || preg_match("/[\n\r]/", $d) || trim($d)) {
danielebarchiesi@4:         $d = htmlspecialchars($d, ENT_NOQUOTES);
danielebarchiesi@4:         $s['o_xml_data'] = isset($s['o_xml_data']) ? $s['o_xml_data'] . $d : $d;
danielebarchiesi@4:       }
danielebarchiesi@4:       $this->updateS($s);
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4:   
danielebarchiesi@4:   /*  */
danielebarchiesi@4:   
danielebarchiesi@4: }