third_party/WebKit/Source/web/WebBlob.cpp

/*
 * Copyright (C) 2011 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.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * 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
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#include "public/web/WebBlob.h"

#include "bindings/core/v8/V8Binding.h"
#include "bindings/core/v8/V8Blob.h"
#include "core/fileapi/Blob.h"
#include "platform/FileMetadata.h"
#include "platform/blob/BlobData.h"
#include <memory>

namespace blink {

WebBlob WebBlob::createFromUUID(const WebString& uuid, const WebString& type, long long size)
{
    return Blob::create(BlobDataHandle::create(uuid, type, size));
}

WebBlob WebBlob::createFromFile(const WebString& path, long long size)
{
    std::unique_ptr<BlobData> blobData = BlobData::create();
    blobData->appendFile(path, 0, size, invalidFileTime());
    return Blob::create(BlobDataHandle::create(std::move(blobData), size));
}

WebBlob WebBlob::fromV8Value(v8::Local<v8::Value> value)
{
    if (V8Blob::hasInstance(value, v8::Isolate::GetCurrent())) {
        v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
        Blob* blob = V8Blob::toImpl(object);
        DCHECK(blob);
        return blob;
    }
    return WebBlob();
}

void WebBlob::reset()
{
    m_private.reset();
}

void WebBlob::assign(const WebBlob& other)
{
    m_private = other.m_private;
}

WebString WebBlob::uuid()
{
    if (!m_private.get())
        return WebString();
    return m_private->uuid();
}

v8::Local<v8::Value> WebBlob::toV8Value(v8::Local<v8::Object> creationContext, v8::Isolate* isolate)
{
    // We no longer use |creationContext| because it's often misused and points
    // to a context faked by user script.
    DCHECK(creationContext->CreationContext() == isolate->GetCurrentContext());
    if (!m_private.get())
        return v8::Local<v8::Value>();
    return toV8(m_private.get(), isolate->GetCurrentContext()->Global(), isolate);
}

WebBlob::WebBlob(Blob* blob)
    : m_private(blob)
{
}

WebBlob& WebBlob::operator=(Blob* blob)
{
    m_private = blob;
    return *this;
}

} // namespace blink