diff sites/all/modules/rdfx/rdfx.import.inc @ 4:ce11bbd8f642

added modules

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sites/all/modules/rdfx/rdfx.import.inc	Thu Sep 19 10:38:44 2013 +0100
@@ -0,0 +1,63 @@
+<?php
+
+/**
+ * @file
+ * Functions for importing and parsing RDF data.
+ */
+
+/**
+ * Loads an RDF file from an HTTP URI or local file, parses it, and builds an
+ * RDF schema representation (associative array) from it.
+ *
+ * @param $uri
+ *    The namespace URI for this graph.
+ * @param $prefix
+ *    The prefix for this graph.
+ * @param $filename (optional)
+ *    A local RDF file to parse.
+ * @return array
+ * @throws Exception On network or parse error
+ */
+function rdfx_fetch_rdf($uri, $prefix, $filename = NULL) {
+  if ($filename != NULL) {
+    if (!is_file($filename)) {
+      throw new Exception("File not found: '$filename'");
+      return;
+    }
+    $content = file_get_contents($filename);
+    return _rdfx_parse_rdf($uri, $content);
+  }
+
+  $schema_url = $uri;
+  $i = strpos($schema_url, '#');
+  if ($i !== false) {
+    $schema_url = substr($schema_url, 0, $i);
+  }
+  return _rdfx_parse_rdf($uri);
+}
+
+function _rdfx_parse_rdf($base_uri) {
+  $namespaces = array();
+
+  $parser = ARC2::getRDFParser();
+  $parser->parse($base_uri);
+  // If this is an N3 file, the namespaces array isn't populated. Iterate
+  // through the attached parser object's prefixes and remove the colon from
+  // the end of the prefix.
+  // @todo File an issue with ARC2.
+
+  switch ($parser->format) {
+    case 'turtle':
+      foreach ($parser->parser->prefixes as $prefix => $uri) {
+        $formatted_prefix = str_replace(':', '', $prefix);
+        $namespaces[$formatted_prefix] = $uri;
+      }
+      break;
+    default:
+      foreach ($parser->parser->nsp as $uri => $prefix) {
+        $namespaces[$prefix] = $uri;
+      }
+      break;
+  }
+  return array($parser->getTriples(), $namespaces);
+}