| /* |
| * 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/array_buffer_or_array_buffer_view_or_blob_or_usv_string.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/fileapi/file_reader_loader.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/handle.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*, |
| const HeapVector<ArrayBufferOrArrayBufferViewOrBlobOrUSVString>&, |
| const BlobPropertyBag*); |
| |
| static Blob* Create(const unsigned char* data, |
| size_t size, |
| const String& content_type); |
| |
| explicit Blob(scoped_refptr<BlobDataHandle>); |
| ~Blob() override; |
| |
| virtual uint64_t size() const { return blob_data_handle_->size(); } |
| virtual 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 text(ScriptState* script_state); |
| ScriptPromise arrayBuffer(ScriptState* script_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; |
| bool IsMojoBlob() final; |
| void CloneMojoBlob(mojo::PendingReceiver<mojom::blink::Blob>) final; |
| mojo::PendingRemote<mojom::blink::Blob> AsMojoBlob(); |
| |
| // ImageBitmapSource implementation |
| bool IsBlob() const override { return true; } |
| |
| protected: |
| static void PopulateBlobData( |
| BlobData*, |
| const HeapVector<ArrayBufferOrArrayBufferViewOrBlobOrUSVString>& 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; |
| // Helper called by text() and arrayBuffer(). The operations only differ by |
| // 1 line, depending on the read_type. |
| ScriptPromise ReadBlobInternal(ScriptState* script_state, |
| FileReaderLoader::ReadType read_type); |
| |
| scoped_refptr<BlobDataHandle> blob_data_handle_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_FILEAPI_BLOB_H_ |