1 files changed, 45 insertions, 0 deletions
diff --git a/parser/html/nsHtml5MetaScannerCppSupplement.h b/parser/html/nsHtml5MetaScannerCppSupplement.h
new file mode 100644
index 000000000..5e7033777
--- /dev/null
+++ b/parser/html/nsHtml5MetaScannerCppSupplement.h
@@ -0,0 +1,45 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ 
+#include "nsEncoderDecoderUtils.h"
+#include "nsISupportsImpl.h"
+
+#include "mozilla/dom/EncodingUtils.h"
+
+using mozilla::dom::EncodingUtils;
+
+void
+nsHtml5MetaScanner::sniff(nsHtml5ByteReadable* bytes, nsACString& charset)
+{
+  readable = bytes;
+  stateLoop(stateSave);
+  readable = nullptr;
+  charset.Assign(mCharset);
+}
+
+bool
+nsHtml5MetaScanner::tryCharset(nsString* charset)
+{
+  // This code needs to stay in sync with
+  // nsHtml5StreamParser::internalEncodingDeclaration. Unfortunately, the
+  // trickery with member fields here leads to some copy-paste reuse. :-(
+  nsAutoCString label;
+  CopyUTF16toUTF8(*charset, label);
+  nsAutoCString encoding;
+  if (!EncodingUtils::FindEncodingForLabel(label, encoding)) {
+    return false;
+  }
+  if (encoding.EqualsLiteral("UTF-16BE") ||
+      encoding.EqualsLiteral("UTF-16LE")) {
+    mCharset.AssignLiteral("UTF-8");
+    return true;
+  }
+  if (encoding.EqualsLiteral("x-user-defined")) {
+    // WebKit/Blink hack for Indian and Armenian legacy sites
+    mCharset.AssignLiteral("windows-1252");
+    return true;
+  }
+  mCharset.Assign(encoding);
+  return true;
+}