third_party/blink/renderer/core/exported/web_blob.cc

/*
 * 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.
 *     * 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 "third_party/blink/public/web/web_blob.h"

#include <memory>

#include "third_party/blink/public/mojom/blob/blob.mojom.h"
#include "third_party/blink/public/mojom/blob/serialized_blob.mojom.h"
#include "third_party/blink/public/platform/cross_variant_mojo_util.h"
#include "third_party/blink/renderer/bindings/core/v8/to_v8_traits.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_blob.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/fileapi/blob.h"
#include "third_party/blink/renderer/core/fileapi/file_backed_blob_factory_dispatcher.h"
#include "third_party/blink/renderer/platform/blob/blob_data.h"
#include "third_party/blink/renderer/platform/file_metadata.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"

namespace blink {

WebBlob WebBlob::CreateFromSerializedBlob(mojom::SerializedBlobPtr blob) {
  return MakeGarbageCollected<Blob>(BlobDataHandle::Create(
      String::FromUTF8(blob->uuid), String::FromUTF8(blob->content_type),
      blob->size, ToCrossVariantMojoType(std::move(blob->blob))));
}

WebBlob WebBlob::CreateFromFile(v8::Isolate* isolate,
                                const WebString& path,
                                uint64_t size) {
  return MakeGarbageCollected<Blob>(BlobDataHandle::CreateForFile(
      FileBackedBlobFactoryDispatcher::GetFileBackedBlobFactory(
          ExecutionContext::From(isolate->GetCurrentContext())),
      path, /*offset=*/0, size, /*expected_modification_time=*/std::nullopt,
      /*content_type=*/""));
}

WebBlob WebBlob::FromV8Value(v8::Isolate* isolate, v8::Local<v8::Value> value) {
  if (Blob* blob = V8Blob::ToWrappable(isolate, value)) {
    return blob;
  }
  return WebBlob();
}

void WebBlob::Reset() {
  private_.Reset();
}

void WebBlob::Assign(const WebBlob& other) {
  private_ = other.private_;
}

WebString WebBlob::Uuid() {
  if (!private_.Get())
    return WebString();
  return private_->Uuid();
}

v8::Local<v8::Value> WebBlob::ToV8Value(v8::Isolate* isolate) {
  if (!private_.Get())
    return v8::Local<v8::Value>();
  v8::Local<v8::Value> value = ToV8Traits<Blob>::ToV8(
      ScriptState::From(isolate->GetCurrentContext()), private_.Get());
  return value;
}

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

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

}  // namespace blink