libarc-php 2~20101006-2 / usr / share / php / arc / serializers / ARC2_MicroRDFSerializer.php

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/usr/share/php/arc/serializers/ARC2_MicroRDFSerializer.php is in libarc-php 2~20101006-2.

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<?php
/**
 * ARC2 MicroRDF Serializer
 *
 * @author Benjamin Nowack
 * @license <http://arc.semsol.org/license>
 * @homepage <http://arc.semsol.org/>
 * @package ARC2
 * @version 2010-11-16
*/

ARC2::inc('RDFSerializer');

class ARC2_MicroRDFSerializer extends ARC2_RDFSerializer {

  function __construct($a, &$caller) {
    parent::__construct($a, $caller);
  }
  
  function __init() {
    parent::__init();
    $this->content_header = 'text/html';
    $this->label_store = $this->v('label_store', '', $this->a);
  }

  /*  */
  
  function getLabel($res, $ps = '') {
    if (!$ps) $ps = array();
    foreach ($ps as $p => $os) {
      if (preg_match('/[\/\#](name|label|summary|title|fn)$/i', $p)) {
        return $os[0]['value'];
      }
    }
    if (preg_match('/^\_\:/', $res)) return "An unnamed resource";
    return $this->extractTermLabel($res);
    return preg_replace("/^(.*[\/\#])([^\/\#]+)$/", '\\2', str_replace('_', ' ', $res));
  }
  
  function getSerializedIndex($index, $res = '') {
    $r = '';
    $n = "\n";
    if ($res) $index = array($res => $index[$res]);
    //return Trice::dump($index);
    $types = $this->v($this->expandPName('rdf:type'), array(), $index);
    $main_type = $types ? $types[0]['value'] : '';
    foreach ($index as $s => $ps) {
      /* node */
      $r .= '
        <div class="rdf-item" ' . $this->mdAttrs($s, $main_type) . '>
          <h3 class="rdf-itemlabel"><a href="' . $s . '">' . ucfirst($this->getLabel($s, $ps))  . '</a></h3>
      ';
      /* arcs */
      foreach ($ps as $p => $os) {
        $p_cls = strtolower($this->getPName($p));
        $p_cls = str_replace(':', '-', $p_cls);
        $r .= '
          <div class="rdf-prop ' . $p_cls . '">
            <a class="rdf-proplabel" href="' . $p . '">' . ucfirst($this->getLabel($p)) . ':</a>
            <ul class="rdf-values">
        ';
        $oc = count($os);
        foreach ($os as $i => $o) {
          $val = $this->getObjectValue($o, $p);
          $cls = '';
          if ($i == 0) $cls .= ($cls ? ' ' : '') . 'first';
          if ($i == $oc - 1) $cls .= ($cls ? ' ' : '') . 'last';
          $r .= $n . '<li' . ($cls ? ' class="' . $cls . '"' : '') . '>' . $val . '</li>';
        }
        $r .= '
            </ul>
            <div class="clb"></div>
          </div>
        ';
      }
      /* /node */
      $r .= '
        <div class="clb"></div>
        </div>
      ';
    }
    return $r;
  }
  
  function getObjectValue($o, $p) {
    if ($o['type'] == 'uri') {
      if (preg_match('/(jpe?g|gif|png)$/i', $o['value'])) {
        return $this->getImageObjectValue($o, $p);
      }
      return $this->getURIObjectValue($o, $p);
    }
    if ($o['type'] == "bnode") {
      return $this->getBNodeObjectValue($o, $p);
    }
    return $this->getLiteralObjectValue($o, $p);
  }
  
  function getImageObjectValue($o, $p) {
    return '<img class="rdf-value" itemprop="' . $p. '" src="' . htmlspecialchars($o['value']) . '" alt="img" />';
  }
  
  function getURIObjectValue($o, $p) {
    $id = htmlspecialchars($o['value']);
    $label = $this->getObjectLabel($o['value']);
    /* differing href */
    $href = htmlspecialchars($this->v('href', $o['value'], $o));
    if ($id != $href) {
      return '<a class="rdf-value" itemprop="' . $p. '" href="' . $id . '" onclick="location.href=\'' . $href . '\';return false">' . $label . '</a>';
    }
    return '<a class="rdf-value" itemprop="' . $p. '" href="' . $id . '">' . $label . '</a>';
    //$label = $o['value'];
    //$label = preg_replace('/^https?\:\/\/(www\.)?/', '', $label);
  }

  function getBNodeObjectValue($o, $p) {
    return '<div class="rdf-value" itemprop="' . $p. '" itemscope="">' . $o['value'] . '</div>';
    return '<div class="rdf-value" itemprop="' . $p. '" itemscope="">An unnamed resource</div>';
  }

  function getLiteralObjectValue($o, $p) {
    return '<div class="rdf-value" itemprop="' . $p. '">' . $o['value'] . '</div>';
  }

  /*  */

  function getObjectLabel($id) {
    $r = $this->extractTermLabel($id);
    if (!$this->label_store) return $r;
    $q = '
      SELECT ?val WHERE {
        <' . $id . '> ?p ?val .
        FILTER(REGEX(str(?p), "(label|title|name|summary)$"))
      } LIMIT 1
    ';
    $row = $this->label_store->query($q, 'row');
    return $row ? $row['val'] : $r;
  }

  /*  */
  
}

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