1 files changed, 66 insertions, 0 deletions
diff --git a/apps/files_pdfviewer/js/pdfjs/src/metadata.js b/apps/files_pdfviewer/js/pdfjs/src/metadata.js
new file mode 100644
index 00000000000..f3805616866
--- /dev/null
+++ b/apps/files_pdfviewer/js/pdfjs/src/metadata.js
@@ -0,0 +1,66 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+'use strict';
+
+var Metadata = PDFJS.Metadata = (function MetadataClosure() {
+  function Metadata(meta) {
+    if (typeof meta === 'string') {
+      var parser = new DOMParser();
+      meta = parser.parseFromString(meta, 'application/xml');
+    } else if (!(meta instanceof Document)) {
+      error('Metadata: Invalid metadata object');
+    }
+
+    this.metaDocument = meta;
+    this.metadata = {};
+    this.parse();
+  }
+
+  Metadata.prototype = {
+    parse: function Metadata_parse() {
+      var doc = this.metaDocument;
+      var rdf = doc.documentElement;
+
+      if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') { // Wrapped in <xmpmeta>
+        rdf = rdf.firstChild;
+        while (rdf && rdf.nodeName.toLowerCase() !== 'rdf:rdf')
+          rdf = rdf.nextSibling;
+      }
+
+      var nodeName = (rdf) ? rdf.nodeName.toLowerCase() : null;
+      if (!rdf || nodeName !== 'rdf:rdf' || !rdf.hasChildNodes())
+        return;
+
+      var childNodes = rdf.childNodes, desc, namespace, entries, entry;
+
+      for (var i = 0, length = childNodes.length; i < length; i++) {
+        desc = childNodes[i];
+        if (desc.nodeName.toLowerCase() !== 'rdf:description')
+          continue;
+
+        entries = [];
+        for (var ii = 0, iLength = desc.childNodes.length; ii < iLength; ii++) {
+          if (desc.childNodes[ii].nodeName.toLowerCase() !== '#text')
+            entries.push(desc.childNodes[ii]);
+        }
+
+        for (ii = 0, iLength = entries.length; ii < iLength; ii++) {
+          var entry = entries[ii];
+          var name = entry.nodeName.toLowerCase();
+          this.metadata[name] = entry.textContent.trim();
+        }
+      }
+    },
+
+    get: function Metadata_get(name) {
+      return this.metadata[name] || null;
+    },
+
+    has: function Metadata_has(name) {
+      return typeof this.metadata[name] !== 'undefined';
+    }
+  };
+
+  return Metadata;
+})();