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