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/*
* Copyright (C) 2013 Google Inc. 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/encoding/TextEncoder.h"
#include "bindings/core/v8/ExceptionState.h"
#include "wtf/text/CString.h"
#include "wtf/text/TextEncodingRegistry.h"
namespace blink {
TextEncoder* TextEncoder::create(const String& utfLabel, ExceptionState& exceptionState)
{
WTF::TextEncoding encoding(utfLabel);
if (!encoding.isValid()) {
exceptionState.throwRangeError("The encoding label provided ('" + utfLabel + "') is invalid.");
return 0;
}
String name(encoding.name());
if (name != "UTF-8" && name != "UTF-16LE" && name != "UTF-16BE") {
exceptionState.throwRangeError("The encoding provided ('" + utfLabel + "') is not one of 'utf-8', 'utf-16', or 'utf-16be'.");
return 0;
}
return new TextEncoder(encoding);
}
TextEncoder::TextEncoder(const WTF::TextEncoding& encoding)
: m_encoding(encoding)
, m_codec(newTextCodec(encoding))
{
}
TextEncoder::~TextEncoder()
{
}
String TextEncoder::encoding() const
{
String name = String(m_encoding.name()).lower();
ASSERT(name == "utf-8" || name == "utf-16le" || name == "utf-16be");
return name;
}
PassRefPtr<DOMUint8Array> TextEncoder::encode(const String& input)
{
CString result;
if (input.is8Bit())
result = m_codec->encode(input.characters8(), input.length(), WTF::QuestionMarksForUnencodables);
else
result = m_codec->encode(input.characters16(), input.length(), WTF::QuestionMarksForUnencodables);
const char* buffer = result.data();
const unsigned char* unsignedBuffer = reinterpret_cast<const unsigned char*>(buffer);
return DOMUint8Array::create(unsignedBuffer, result.length());
}
} // namespace blink
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