1 files changed, 39 insertions, 0 deletions
diff --git a/parser/html/nsHtml5MetaScannerCppSupplement.h b/parser/html/nsHtml5MetaScannerCppSupplement.h
new file mode 100644
index 0000000000..16878fa53e
--- /dev/null
+++ b/parser/html/nsHtml5MetaScannerCppSupplement.h
@@ -0,0 +1,39 @@
+/* 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 "nsISupportsImpl.h"
+
+#include "mozilla/Encoding.h"
+
+const mozilla::Encoding* nsHtml5MetaScanner::sniff(nsHtml5ByteReadable* bytes) {
+  readable = bytes;
+  stateLoop(stateSave);
+  readable = nullptr;
+  return mEncoding;
+}
+
+bool nsHtml5MetaScanner::tryCharset(nsHtml5String 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;
+  nsString charset16;  // Not Auto, because using it to hold nsStringBuffer*
+  charset.ToString(charset16);
+  CopyUTF16toUTF8(charset16, label);
+  const mozilla::Encoding* encoding = Encoding::ForLabel(label);
+  if (!encoding) {
+    return false;
+  }
+  if (encoding == UTF_16BE_ENCODING || encoding == UTF_16LE_ENCODING) {
+    mEncoding = UTF_8_ENCODING;
+    return true;
+  }
+  if (encoding == X_USER_DEFINED_ENCODING) {
+    // WebKit/Blink hack for Indian and Armenian legacy sites
+    mEncoding = WINDOWS_1252_ENCODING;
+    return true;
+  }
+  mEncoding = encoding;
+  return true;
+}