1 files changed, 30 insertions, 0 deletions
diff --git a/src/common/Entities.js b/src/common/Entities.js
new file mode 100644
index 0000000..03a5d11
--- /dev/null
+++ b/src/common/Entities.js
@@ -0,0 +1,30 @@
+var Entities = {
+  get htmlNode() {
+    delete this.htmlNode;
+    return this.htmlNode = document.implementation.createHTMLDocument("")
+      .createElement("body");
+  },
+  convert: function(e) {
+    try {
+      this.htmlNode.innerHTML = e;
+      var child = this.htmlNode.firstChild || null;
+      return child && child.nodeValue || e;
+    } catch(ex) {
+      return e;
+    }
+  },
+  convertAll: function(s) {
+    return s.replace(/[\\&][^<>]+/g, function(e) { return Entities.convert(e) });
+  },
+  convertDeep: function(s) {
+    for (var prev = null; (s = this.convertAll(s)) !== prev || (s = unescape(s)) !== prev; prev = s);
+    return s;
+  },
+  neutralize: function(e, whitelist) {
+    var c = this.convert(e);
+    return (c == e) ? c : (whitelist && whitelist.test(c) ? e : e.replace(";", ","));
+  },
+  neutralizeAll: function(s, whitelist) {
+    return s.replace(/&[\w#-]*?;/g, function(e) { return Entities.neutralize(e, whitelist || null); });
+  }
+};