| /* |
| * 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 Blob_h |
| #define Blob_h |
| |
| #include "base/memory/scoped_refptr.h" |
| #include "bindings/core/v8/array_buffer_or_array_buffer_view_or_blob_or_usv_string.h" |
| #include "core/CoreExport.h" |
| #include "core/html/URLRegistry.h" |
| #include "core/imagebitmap/ImageBitmapSource.h" |
| #include "core/typed_arrays/DOMArrayBuffer.h" |
| #include "core/typed_arrays/DOMArrayBufferView.h" |
| #include "platform/bindings/ScriptWrappable.h" |
| #include "platform/blob/BlobData.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/wtf/text/WTFString.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*, ExceptionState&) { |
| return new Blob(BlobDataHandle::Create()); |
| } |
| |
| static Blob* Create( |
| ExecutionContext*, |
| const HeapVector<ArrayBufferOrArrayBufferViewOrBlobOrUSVString>&, |
| const BlobPropertyBag&, |
| ExceptionState&); |
| |
| static Blob* Create(scoped_refptr<BlobDataHandle> blob_data_handle) { |
| return new Blob(std::move(blob_data_handle)); |
| } |
| |
| static Blob* Create(const unsigned char* data, |
| size_t bytes, |
| const String& content_type); |
| |
| ~Blob() override; |
| |
| virtual unsigned long long size() const { return blob_data_handle_->size(); } |
| virtual Blob* slice(long long start, |
| long long 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<long long>::max(), String(), |
| exception_state); |
| } |
| Blob* slice(long long start, ExceptionState& exception_state) const { |
| return slice(start, std::numeric_limits<long long>::max(), String(), |
| exception_state); |
| } |
| Blob* slice(long long start, |
| long long end, |
| ExceptionState& exception_state) const { |
| return slice(start, end, String(), exception_state); |
| } |
| |
| String type() const { return blob_data_handle_->GetType(); } |
| String Uuid() const { return blob_data_handle_->Uuid(); } |
| scoped_refptr<BlobDataHandle> GetBlobDataHandle() const { |
| return blob_data_handle_; |
| } |
| // 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. |
| virtual void AppendTo(BlobData&) const; |
| |
| // URLRegistrable to support PublicURLs. |
| URLRegistry& Registry() const final; |
| mojom::blink::BlobPtr AsMojoBlob() final; |
| |
| // ImageBitmapSource implementation |
| bool IsBlob() const override { return true; } |
| |
| protected: |
| explicit Blob(scoped_refptr<BlobDataHandle>); |
| |
| static void PopulateBlobData( |
| BlobData*, |
| const HeapVector<ArrayBufferOrArrayBufferViewOrBlobOrUSVString>& parts, |
| bool normalize_line_endings_to_native); |
| static void ClampSliceOffsets(long long size, |
| long long& start, |
| long long& 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 // Blob_h |