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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 Blob_h
#define Blob_h
#include "BlobPart.h"
#include "ScriptWrappable.h"
#include "URLRegistry.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class ScriptExecutionContext;
class Blob : public ScriptWrappable, public URLRegistrable, public RefCounted<Blob> {
public:
static PassRefPtr<Blob> create()
{
return adoptRef(new Blob);
}
static PassRefPtr<Blob> create(Vector<char> data, const String& contentType)
{
return adoptRef(new Blob(WTF::move(data), contentType));
}
static PassRefPtr<Blob> create(Vector<BlobPart> blobParts, const String& contentType)
{
return adoptRef(new Blob(WTF::move(blobParts), contentType));
}
static PassRefPtr<Blob> deserialize(const URL& srcURL, const String& type, long long size)
{
ASSERT(Blob::isNormalizedContentType(type));
return adoptRef(new Blob(deserializationContructor, srcURL, type, size));
}
virtual ~Blob();
const URL& url() const { return m_internalURL; }
const String& type() const { return m_type; }
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&);
// Intended for use in ASSERT statements.
static bool isNormalizedContentType(const String&);
static bool isNormalizedContentType(const CString&);
// URLRegistrable
virtual URLRegistry& registry() const override;
PassRefPtr<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:
Blob();
Blob(Vector<char>, const String& contentType);
Blob(Vector<BlobPart>, const String& contentType);
enum UninitializedContructor { uninitializedContructor };
Blob(UninitializedContructor);
enum DeserializationContructor { deserializationContructor };
Blob(DeserializationContructor, const URL& srcURL, const String& type, long long size);
// For slicing.
Blob(const URL& srcURL, long long start, long long end, const String& contentType);
// 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 long long m_size;
};
#define BLOB_TYPE_CASTS(ToValueTypeName, predicate) \
TYPE_CASTS_BASE(ToValueTypeName, Blob, blob, blob->predicate, blob.predicate)
} // namespace WebCore
#endif // Blob_h
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