| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * Copyright (C) 2012-2019 Apple 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. |
| */ |
| |
| #pragma once |
| |
| #include "BlobPropertyBag.h" |
| #include "ScriptExecutionContext.h" |
| #include "ScriptWrappable.h" |
| #include <wtf/IsoMalloc.h> |
| #include <wtf/URL.h> |
| #include "URLRegistry.h" |
| #include <wtf/Variant.h> |
| |
| namespace JSC { |
| class ArrayBufferView; |
| class ArrayBuffer; |
| } |
| |
| namespace WebCore { |
| |
| class Blob; |
| class ScriptExecutionContext; |
| class SharedBuffer; |
| |
| using BlobPartVariant = Variant<RefPtr<JSC::ArrayBufferView>, RefPtr<JSC::ArrayBuffer>, RefPtr<Blob>, String>; |
| |
| class Blob : public ScriptWrappable, public URLRegistrable, public RefCounted<Blob> { |
| WTF_MAKE_ISO_ALLOCATED_EXPORT(Blob, WEBCORE_EXPORT); |
| public: |
| static Ref<Blob> create() |
| { |
| return adoptRef(*new Blob); |
| } |
| |
| static Ref<Blob> create(Vector<BlobPartVariant>&& blobPartVariants, const BlobPropertyBag& propertyBag) |
| { |
| return adoptRef(*new Blob(WTFMove(blobPartVariants), propertyBag)); |
| } |
| |
| static Ref<Blob> create(const SharedBuffer& buffer, const String& contentType) |
| { |
| return adoptRef(*new Blob(buffer, contentType)); |
| } |
| |
| static Ref<Blob> create(Vector<uint8_t>&& data, const String& contentType) |
| { |
| return adoptRef(*new Blob(WTFMove(data), contentType)); |
| } |
| |
| static Ref<Blob> deserialize(const URL& srcURL, const String& type, long long size, const String& fileBackedPath) |
| { |
| ASSERT(Blob::isNormalizedContentType(type)); |
| return adoptRef(*new Blob(deserializationContructor, srcURL, type, size, fileBackedPath)); |
| } |
| |
| virtual ~Blob(); |
| |
| const URL& url() const { return m_internalURL; } |
| const String& type() const { return m_type; } |
| |
| WEBCORE_EXPORT unsigned long long size() const; |
| virtual bool isFile() const { return false; } |
| |
| // The checks described in the File API spec. |
| static bool isValidContentType(const String&); |
| // The normalization procedure described in the File API spec. |
| static String normalizedContentType(const String&); |
| #if !ASSERT_DISABLED |
| static bool isNormalizedContentType(const String&); |
| static bool isNormalizedContentType(const CString&); |
| #endif |
| |
| // URLRegistrable |
| URLRegistry& registry() const override; |
| |
| Ref<Blob> slice(long long start = 0, long long end = std::numeric_limits<long long>::max(), const String& contentType = String()) const |
| { |
| return adoptRef(*new Blob(m_internalURL, start, end, contentType)); |
| } |
| |
| protected: |
| WEBCORE_EXPORT Blob(); |
| Blob(Vector<BlobPartVariant>&&, const BlobPropertyBag&); |
| Blob(const SharedBuffer&, const String& contentType); |
| Blob(Vector<uint8_t>&&, const String& contentType); |
| |
| enum ReferencingExistingBlobConstructor { referencingExistingBlobConstructor }; |
| Blob(ReferencingExistingBlobConstructor, const Blob&); |
| |
| enum UninitializedContructor { uninitializedContructor }; |
| Blob(UninitializedContructor, URL&&, String&& type); |
| |
| enum DeserializationContructor { deserializationContructor }; |
| Blob(DeserializationContructor, const URL& srcURL, const String& type, Optional<unsigned long long> size, const String& fileBackedPath); |
| |
| // For slicing. |
| Blob(const URL& srcURL, long long start, long long end, const String& contentType); |
| |
| private: |
| // This is an internal URL referring to the blob data associated with this object. It serves |
| // as an identifier for this blob. The internal URL is never used to source the blob's content |
| // into an HTML or for FileRead'ing, public blob URLs must be used for those purposes. |
| URL m_internalURL; |
| |
| String m_type; |
| |
| mutable Optional<unsigned long long> m_size; |
| }; |
| |
| } // namespace WebCore |