Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 94 insertions, 0 deletions

diff --git a/Source/WebCore/platform/cf/SharedBufferCF.cpp b/Source/WebCore/platform/cf/SharedBufferCF.cpp
new file mode 100644
index 0000000..18a65c2
--- /dev/null
+++ b/Source/WebCore/platform/cf/SharedBufferCF.cpp
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2008, 2010 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:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  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.
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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.
+ */
+#include "config.h"
+#include "SharedBuffer.h"
+
+#include "PurgeableBuffer.h"
+
+namespace WebCore {
+
+SharedBuffer::SharedBuffer(CFDataRef cfData)
+    : m_size(0)
+    , m_cfData(cfData)
+{
+}
+
+// Mac is a CF platform but has an even more efficient version of this method,
+// so only use this version for non-Mac
+#if !PLATFORM(MAC)
+CFDataRef SharedBuffer::createCFData()
+{
+    if (m_cfData) {
+        CFRetain(m_cfData.get());
+        return m_cfData.get();
+    }
+
+    // Internal data in SharedBuffer can be segmented. We need to get the contiguous buffer.
+    const Vector<char>& contiguousBuffer = buffer();
+    return CFDataCreate(0, reinterpret_cast<const UInt8*>(contiguousBuffer.data()), contiguousBuffer.size());
+}
+#endif
+
+PassRefPtr<SharedBuffer> SharedBuffer::wrapCFData(CFDataRef data)
+{
+    return adoptRef(new SharedBuffer(data));
+}
+
+bool SharedBuffer::hasPlatformData() const
+{
+    return m_cfData;
+}
+
+const char* SharedBuffer::platformData() const
+{
+    return (const char*)CFDataGetBytePtr(m_cfData.get());
+}
+
+unsigned SharedBuffer::platformDataSize() const
+{
+    return CFDataGetLength(m_cfData.get());
+}
+
+void SharedBuffer::maybeTransferPlatformData()
+{
+    if (!m_cfData)
+        return;
+    
+    ASSERT(!m_size);
+        
+    append((const char*)CFDataGetBytePtr(m_cfData.get()), CFDataGetLength(m_cfData.get()));
+        
+    m_cfData = 0;
+}
+
+void SharedBuffer::clearPlatformData()
+{
+    m_cfData = 0;
+}
+
+}