********** WebCore blob hacking

WebCore/platform/network/BlobData.cpp

 /*
  * 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
@@ skipping 13 matching lines @@
  * 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.
  */
 
 #include "config.h"
 #include "BlobData.h"
 
+#include "BlobRegistry.h"
+#include "UUID.h"
 #include <wtf/OwnPtr.h>
 #include <wtf/PassOwnPtr.h>
 #include <wtf/PassRefPtr.h>
 #include <wtf/RefPtr.h>
 #include <wtf/Vector.h>
 
 namespace WebCore {
 
 const long long BlobDataItem::toEndOfFile = -1;
 
 RawData::RawData()
 {
 }
 
 void RawData::detachFromCurrentThread()
 {
 }
 
 void BlobDataItem::detachFromCurrentThread()
 {
     data->detachFromCurrentThread();
     path = path.isolatedCopy();
-    url = url.copy();
+    fileSystemURL = fileSystemURL.copy();
 }
 
 PassOwnPtr<BlobData> BlobData::create()
 {
     return adoptPtr(new BlobData());
 }
 
 void BlobData::detachFromCurrentThread()
 {
     m_contentType = m_contentType.isolatedCopy();
@@ skipping 10 matching lines @@
 void BlobData::appendFile(const String& path)
 {
     m_items.append(BlobDataItem(path));
 }
 
 void BlobData::appendFile(const String& path, long long offset, long long length, double expectedModificationTime)
 {
     m_items.append(BlobDataItem(path, offset, length, expectedModificationTime));
 }
 
-void BlobData::appendBlob(const KURL& url, long long offset, long long length)
+void BlobData::appendBlob(PassRefPtr<BlobDataHandle> blobDataHandle, long long offset, long long length)
 {
-    m_items.append(BlobDataItem(url, offset, length));
+    m_items.append(BlobDataItem(blobDataHandle, offset, length));
 }
 
 #if ENABLE(FILE_SYSTEM)
-void BlobData::appendURL(const KURL& url, long long offset, long long length, double expectedModificationTime)
+void BlobData::appendFileSystemURL(const KURL& fileSystemURL, long long offset, long long length, double expectedModificationTime)
 {
-    m_items.append(BlobDataItem(url, offset, length, expectedModificationTime));
+    m_items.append(BlobDataItem(fileSystemURL, offset, length, expectedModificationTime));
 }
 #endif
 
 void BlobData::swapItems(BlobDataItemList& items)
 {
     m_items.swap(items);
 }
 
+
+// TODO: Maybe we could/should embed the 'type' and 'size' into the id value too?
+// In some place we pass just the string id value around and in those places
+// we have no way of reconstructing the 'type' and 'size'.
+
+BlobDataHandle::BlobDataHandle()
+    : m_uuid(createCanonicalUUIDString())
+    , m_size(0)
+{
+    blobRegistry().registerBlobData(m_uuid, BlobData::create());
+}
+
+BlobDataHandle::BlobDataHandle(PassOwnPtr<BlobData> data, long long size)
+    : m_uuid(createCanonicalUUIDString())
+    , m_type(data->contentType().isolatedCopy())
+    , m_size(size)
+{
+    blobRegistry().registerBlobData(m_uuid, data);
+}
+
+BlobDataHandle::BlobDataHandle(const String& uuid, const String& type, long long size)
+    : m_uuid(uuid.isolatedCopy())
+    , m_type(type.isolatedCopy())
+    , m_size(size)
+{
+    blobRegistry().addBlobDataRef(m_uuid);
+}
+
+BlobDataHandle::~BlobDataHandle()
+{
+    blobRegistry().removeBlobDataRef(m_uuid);
+}
+
 } // namespace WebCore