/usr/share/php/arc/parsers/ARC2_AtomParser.php is in libarc-php 2.2.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 | <?php
/*
homepage: http://arc.semsol.org/
license: http://arc.semsol.org/license
class: ARC2 Atom Parser
author: Benjamin Nowack
version: 2010-11-16
*/
ARC2::inc('LegacyXMLParser');
class ARC2_AtomParser extends ARC2_LegacyXMLParser {
function __construct($a, &$caller) {
parent::__construct($a, $caller);
}
function __init() {/* reader */
parent::__init();
$this->triples = array();
$this->target_encoding = '';
$this->t_count = 0;
$this->added_triples = array();
$this->skip_dupes = false;
$this->bnode_prefix = $this->v('bnode_prefix', 'arc'.substr(md5(uniqid(rand())), 0, 4).'b', $this->a);
$this->bnode_id = 0;
$this->cache = array();
$this->allowCDataNodes = 0;
}
/* */
function done() {
$this->extractRDF();
}
/* */
function setReader(&$reader) {
$this->reader = $reader;
}
function createBnodeID(){
$this->bnode_id++;
return '_:' . $this->bnode_prefix . $this->bnode_id;
}
function addT($t) {
//if (!isset($t['o_datatype']))
if ($this->skip_dupes) {
//$h = md5(print_r($t, 1));
$h = md5(serialize($t));
if (!isset($this->added_triples[$h])) {
$this->triples[$this->t_count] = $t;
$this->t_count++;
$this->added_triples[$h] = true;
}
}
else {
$this->triples[$this->t_count] = $t;
$this->t_count++;
}
}
function getTriples() {
return $this->v('triples', array());
}
function countTriples() {
return $this->t_count;
}
function getSimpleIndex($flatten_objects = 1, $vals = '') {
return ARC2::getSimpleIndex($this->getTriples(), $flatten_objects, $vals);
}
/* */
function extractRDF() {
$index = $this->getNodeIndex();
//print_r($index);
$this->rdf = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
$this->atom = 'http://www.w3.org/2005/Atom';
$this->rss = 'http://purl.org/rss/1.0/';
$this->dc = 'http://purl.org/dc/elements/1.1/';
$this->sioc = 'http://rdfs.org/sioc/ns#';
$this->dct = 'http://purl.org/dc/terms/';
$this->content = 'http://purl.org/rss/1.0/modules/content/';
$this->enc = 'http://purl.oclc.org/net/rss_2.0/enc#';
$this->mappings = array(
'feed' => $this->rss . 'channel',
'entry' => $this->rss . 'item',
'title' => $this->rss . 'title',
'link' => $this->rss . 'link',
'summary' => $this->rss . 'description',
'content' => $this->content . 'encoded',
'id' => $this->dc . 'identifier',
'author' => $this->dc . 'creator',
'category' => $this->dc . 'subject',
'updated' => $this->dc . 'date',
'source' => $this->dc . 'source',
);
$this->dt_props = array(
$this->dc . 'identifier',
$this->rss . 'link'
);
foreach ($index as $p_id => $nodes) {
foreach ($nodes as $pos => $node) {
$tag = $this->v('tag', '', $node);
if ($tag == 'feed') {
$struct = $this->extractChannel($index[$node['id']]);
$triples = ARC2::getTriplesFromIndex($struct);
foreach ($triples as $t) {
$this->addT($t);
}
}
elseif ($tag == 'entry') {
$struct = $this->extractItem($index[$node['id']]);
$triples = ARC2::getTriplesFromIndex($struct);
foreach ($triples as $t) {
$this->addT($t);
}
}
}
}
}
function extractChannel($els) {
list($props, $sub_index) = $this->extractProps($els, 'channel');
$uri = $props[$this->rss . 'link'][0]['value'];
return ARC2::getMergedIndex(array($uri => $props), $sub_index);
}
function extractItem($els) {
list($props, $sub_index) = $this->extractProps($els, 'item');
$uri = $props[$this->rss . 'link'][0]['value'];
return ARC2::getMergedIndex(array($uri => $props), $sub_index);
}
function extractProps($els, $container) {
$r = array($this->rdf . 'type' => array(array('value' => $this->rss . $container, 'type' => 'uri')));
$sub_index = array();
foreach ($els as $info) {
/* key */
$tag = $info['tag'];
if (!preg_match('/^[a-z0-9]+\:/i', $tag)) {
$k = isset($this->mappings[$tag]) ? $this->mappings[$tag] : '';
}
elseif (isset($this->mappings[$tag])) {
$k = $this->mappings[$tag];
}
else {/* qname */
$k = $this->expandPName($tag);
}
//echo $k . "\n";
if (($container == 'channel') && ($k == $this->rss . 'item')) continue;
/* val */
$v = trim($info['cdata']);
if (!$v) $v = $this->v('href uri', '', $info['a']);
/* prop */
if ($k) {
/* content handling */
if (in_array($k, array($this->rss . 'description', $this->content . 'encoded'))) {
$v = $this->getNodeContent($info);
}
/* source handling */
elseif ($k == $this->dc . 'source') {
$sub_nodes = $this->node_index[$info['id']];
foreach ($sub_nodes as $sub_pos => $sub_info) {
if ($sub_info['tag'] == 'id') {
$v = trim($sub_info['cdata']);
}
}
}
/* link handling */
elseif ($k == $this->rss . 'link') {
if ($link_type = $this->v('type', '', $info['a'])) {
$k2 = $this->dc . 'format';
if (!isset($sub_index[$v])) $sub_index[$v] = array();
if (!isset($sub_index[$v][$k2])) $sub_index[$v][$k2] = array();
$sub_index[$v][$k2][] = array('value' => $link_type, 'type' => 'literal');
}
}
/* author handling */
elseif ($k == $this->dc . 'creator') {
$sub_nodes = $this->node_index[$info['id']];
foreach ($sub_nodes as $sub_pos => $sub_info) {
if ($sub_info['tag'] == 'name') {
$v = trim($sub_info['cdata']);
}
if ($sub_info['tag'] == 'uri') {
$k2 = $this->sioc . 'has_creator';
$v2 = trim($sub_info['cdata']);
if (!isset($r[$k2])) $r[$k2] = array();
$r[$k2][] = array('value' => $v2, 'type' => 'uri');
}
}
}
/* date handling */
elseif (in_array($k, array($this->dc . 'date', $this->dct . 'modified'))) {
if (!preg_match('/^[0-9]{4}/', $v) && ($sub_v = strtotime($v)) && ($sub_v != -1)) {
$tz = date('Z', $sub_v); /* timezone offset */
$sub_v -= $tz; /* utc */
$v = date('Y-m-d\TH:i:s\Z', $sub_v);
}
}
/* tag handling */
elseif ($k == $this->dc . 'subject') {
$v = $this->v('term', '', $info['a']);
}
/* other attributes in closed tags */
elseif (!$v && ($info['state'] == 'closed') && $info['a']) {
foreach ($info['a'] as $sub_k => $sub_v) {
if (!preg_match('/(xmlns|\:|type)/', $sub_k)) {
$v = $sub_v;
break;
}
}
}
if (!isset($r[$k])) $r[$k] = array();
$r[$k][] = array('value' => $v, 'type' => in_array($k, $this->dt_props) || !preg_match('/^[a-z0-9]+\:[^\s]+$/is', $v) ? 'literal' : 'uri');
}
}
return array($r, $sub_index);
}
function initXMLParser() {
if (!isset($this->xml_parser)) {
$enc = preg_match('/^(utf\-8|iso\-8859\-1|us\-ascii)$/i', $this->getEncoding(), $m) ? $m[1] : 'UTF-8';
$parser = xml_parser_create($enc);
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0);
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_set_element_handler($parser, 'open', 'close');
xml_set_character_data_handler($parser, 'cData');
xml_set_start_namespace_decl_handler($parser, 'nsDecl');
xml_set_object($parser, $this);
$this->xml_parser = $parser;
}
}
/* */
}
|