source: webkit/trunk/Source/WebCore/fileapi/BlobBuilder.cpp

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 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 *
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "BlobBuilder.h"
#include "EndingType.h"

#include "Blob.h"
#include <JavaScriptCore/ArrayBuffer.h>
#include <JavaScriptCore/ArrayBufferView.h>
#include <pal/text/TextEncoding.h>
#include <wtf/text/CString.h>
#include <wtf/text/LineEnding.h>

namespace WebCore {

BlobBuilder::BlobBuilder(EndingType endings)
    : m_endings(endings)
{
}

void BlobBuilder::append(RefPtr<ArrayBuffer>&& arrayBuffer)
{
    if (!arrayBuffer)
        return;
    m_appendableData.append(static_cast<const uint8_t*>(arrayBuffer->data()), arrayBuffer->byteLength());
}

void BlobBuilder::append(RefPtr<ArrayBufferView>&& arrayBufferView)
{
    if (!arrayBufferView)
        return;
    m_appendableData.append(static_cast<const uint8_t*>(arrayBufferView->baseAddress()), arrayBufferView->byteLength());
}

void BlobBuilder::append(RefPtr<Blob>&& blob)
{
    if (!blob)
        return;
    if (!m_appendableData.isEmpty())
        m_items.append(BlobPart(WTFMove(m_appendableData)));
    m_items.append(BlobPart(blob->url()));
}

void BlobBuilder::append(const String& text)
{
    auto bytes = PAL::UTF8Encoding().encode(text, PAL::UnencodableHandling::Entities, PAL::NFCNormalize::No);

    if (m_endings == EndingType::Native)
        bytes = normalizeLineEndingsToNative(WTFMove(bytes));

    if (m_appendableData.isEmpty())
        m_appendableData = WTFMove(bytes);
    else {
        // FIXME: Would it be better to move multiple vectors into m_items instead of merging them into one?
        m_appendableData.appendVector(bytes);
    }
}

Vector<BlobPart> BlobBuilder::finalize()
{
    if (!m_appendableData.isEmpty())
        m_items.append(BlobPart(WTFMove(m_appendableData)));
    return WTFMove(m_items);
}

} // namespace WebCore