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/*
* Copyright (C) 2010 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FILEAPI_BLOB_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_FILEAPI_BLOB_H_
#include "base/memory/scoped_refptr.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_typedefs.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/fileapi/url_registry.h"
#include "third_party/blink/renderer/core/imagebitmap/image_bitmap_source.h"
#include "third_party/blink/renderer/core/streams/readable_stream.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer_view.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/blob/blob_data.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class BlobPropertyBag;
class ExceptionState;
class ExecutionContext;
class CORE_EXPORT Blob : public ScriptWrappable,
public URLRegistrable,
public ImageBitmapSource {
DEFINE_WRAPPERTYPEINFO();
public:
static Blob* Create(ExecutionContext*) {
return MakeGarbageCollected<Blob>(BlobDataHandle::Create());
}
static Blob* Create(ExecutionContext* execution_context,
const HeapVector<Member<V8BlobPart>>& blob_parts,
const BlobPropertyBag* options);
static Blob* Create(base::span<const uint8_t> data,
const String& content_type);
explicit Blob(scoped_refptr<BlobDataHandle>);
~Blob() override;
virtual uint64_t size() const { return blob_data_handle_->size(); }
Blob* slice(int64_t start,
int64_t end,
const String& content_type,
ExceptionState&) const;
// To allow ExceptionState to be passed in last, manually enumerate the
// optional argument overloads.
Blob* slice(ExceptionState& exception_state) const {
return slice(0, std::numeric_limits<int64_t>::max(), String(),
exception_state);
}
Blob* slice(int64_t start, ExceptionState& exception_state) const {
return slice(start, std::numeric_limits<int64_t>::max(), String(),
exception_state);
}
Blob* slice(int64_t start,
int64_t end,
ExceptionState& exception_state) const {
return slice(start, end, String(), exception_state);
}
ReadableStream* stream(ScriptState* script_state) const;
ScriptPromise<IDLUSVString> text(ScriptState* script_state);
ScriptPromise<DOMArrayBuffer> arrayBuffer(ScriptState* script_state);
String type() const { return blob_data_handle_->GetType(); }
String Uuid() const { return blob_data_handle_->Uuid(); }
// Returns the BlobDataHandle this `Blob` was created with. Note that the size
// of the returned BlobDataHandle might be `BlobUtils::kUnknownSize`. If it is
// important for the returned BlobDataHandle to contain a known size, use
// `GetBlobDataHandleWithKnownSize()` instead.
scoped_refptr<BlobDataHandle> GetBlobDataHandle() const {
return blob_data_handle_;
}
scoped_refptr<BlobDataHandle> GetBlobDataHandleWithKnownSize() const;
// True for all File instances, including the user-built ones.
virtual bool IsFile() const { return false; }
// Only true for File instances that are backed by platform files.
virtual bool HasBackingFile() const { return false; }
// Used by the JavaScript Blob and File constructors.
void AppendTo(BlobData&) const;
// URLRegistrable to support PublicURLs.
URLRegistry& Registry() const final;
bool IsMojoBlob() final;
void CloneMojoBlob(mojo::PendingReceiver<mojom::blink::Blob>) final;
mojo::PendingRemote<mojom::blink::Blob> AsMojoBlob() const;
// ImageBitmapSource implementation
ImageBitmapSourceStatus CheckUsability() const override { return base::ok(); }
bool IsBlob() const override { return true; }
protected:
static void PopulateBlobData(BlobData* blob_data,
const HeapVector<Member<V8BlobPart>>& parts,
bool normalize_line_endings_to_native);
static void ClampSliceOffsets(uint64_t size, int64_t& start, int64_t& end);
// Called by the Blob and File constructors when processing the 'type'
// option per the FileAPI standard. Returns "" if |type| contains any
// character outside U+0020...U+007E, or |type| ASCII-lowercased otherwise.
static String NormalizeType(const String& type);
private:
Blob() = delete;
scoped_refptr<BlobDataHandle> blob_data_handle_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_FILEAPI_BLOB_H_
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