1 files changed, 99 insertions, 0 deletions
diff --git a/addons/web/static/lib/pdfjs/src/display/metadata.js b/addons/web/static/lib/pdfjs/src/display/metadata.js
new file mode 100644
index 00000000000..8a5e80397bd
--- /dev/null
+++ b/addons/web/static/lib/pdfjs/src/display/metadata.js
@@ -0,0 +1,99 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+/* globals Document, error, PDFJS */
+/* Copyright 2012 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+var Metadata = PDFJS.Metadata = (function MetadataClosure() {
+  function fixMetadata(meta) {
+    return meta.replace(/>\\376\\377([^<]+)/g, function(all, codes) {
+      var bytes = codes.replace(/\\([0-3])([0-7])([0-7])/g,
+                                function(code, d1, d2, d3) {
+        return String.fromCharCode(d1 * 64 + d2 * 8 + d3 * 1);
+      });
+      var chars = '';
+      for (var i = 0; i < bytes.length; i += 2) {
+        var code = bytes.charCodeAt(i) * 256 + bytes.charCodeAt(i + 1);
+        chars += code >= 32 && code < 127 && code !== 60 && code !== 62 &&
+          code !== 38 && false ? String.fromCharCode(code) :
+          '&#x' + (0x10000 + code).toString(16).substring(1) + ';';
+      }
+      return '>' + chars;
+    });
+  }
+
+  function Metadata(meta) {
+    if (typeof meta === 'string') {
+      // Ghostscript produces invalid metadata
+      meta = fixMetadata(meta);
+
+      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 children = rdf.childNodes, desc, entry, name, i, ii, length, iLength;
+      for (i = 0, length = children.length; i < length; i++) {
+        desc = children[i];
+        if (desc.nodeName.toLowerCase() !== 'rdf:description') {
+          continue;
+        }
+
+        for (ii = 0, iLength = desc.childNodes.length; ii < iLength; ii++) {
+          if (desc.childNodes[ii].nodeName.toLowerCase() !== '#text') {
+            entry = desc.childNodes[ii];
+            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;
+})();