Move btoa() / atob() implementation out of DOMWindow

Source/core/page/DOMWindowBase64.cpp

 /*
- * Copyright (C) 2013 Google Inc. All rights reserved.
+ * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
+ * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
-#include "modules/webmidi/MIDIOutput.h"
+#include "DOMWindowBase64.h"
+
+#include "wtf/text/Base64.h"
 
 namespace WebCore {
 
-PassRefPtr<MIDIOutput> MIDIOutput::create(ScriptExecutionContext* context, const String& id, const String& manufacturer, const String& name, const String& version)
+String DOMWindowBase64::btoa(const String& stringToEncode, ExceptionCode& ec) const
 {
-    return adoptRef(new MIDIOutput(context, id, manufacturer, name, version));
+    if (stringToEncode.isNull())
+        return String();
+
+    if (!stringToEncode.containsOnlyLatin1()) {
+        ec = InvalidCharacterError;
+        return String();
+    }
+
+    return base64Encode(stringToEncode.latin1());
 }
 
-MIDIOutput::MIDIOutput(ScriptExecutionContext* context, const String& id, const String& manufacturer, const String& name, const String& version)
-    : MIDIPort(context, id, manufacturer, name, MIDIPortTypeOutput, version)
+String DOMWindowBase64::atob(const String& encodedString, ExceptionCode& ec) const
 {
-    ScriptWrappable::init(this);
-}
+    if (encodedString.isNull())
+        return String();
 
-void MIDIOutput::send(Uint8Array* data, double timestamp)
-{
-    // FIXME: Implement MIDI protocol validation here. System exclusive
-    // messages must be checked at the same time.
-    // Actual sending operation will be implemented in core/platform/midi.
-}
+    if (!encodedString.containsOnlyLatin1()) {
+        ec = InvalidCharacterError;
+        return String();
+    }
 
-void MIDIOutput::send(Vector<unsigned>, double timestamp)
-{
-    // FIXME: Ditto. Implementation will be shared between these two send
-    // functions.
+    Vector<char> out;
+    if (!base64Decode(encodedString, out, Base64FailOnInvalidCharacter)) {
+        ec = InvalidCharacterError;
+        return String();
+    }
+
+    return String(out.data(), out.size());
 }
 
 } // namespace WebCore