Import Dart bindings as of Blink r188698. This merely copies the files over and does not attach any…

sky/engine/bindings-dart/core/dart/custom/DartBlobCustom.cpp

Index: sky/engine/bindings-dart/core/dart/custom/DartBlobCustom.cpp
diff --git a/sky/engine/bindings-dart/core/dart/custom/DartBlobCustom.cpp b/sky/engine/bindings-dart/core/dart/custom/DartBlobCustom.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3c3bbc5e6db7a85139e2f8ce5d51c398db555aca
--- /dev/null
+++ b/sky/engine/bindings-dart/core/dart/custom/DartBlobCustom.cpp
@@ -0,0 +1,123 @@
+// Copyright 2011, 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.
+
+#include "config.h"
+#include "bindings/core/dart/DartBlob.h"
+
+#include "bindings/core/dart/DartFile.h"
+#include "core/dom/ExecutionContext.h"
+
+namespace blink {
+
+namespace DartBlobInternal {
+
+void constructorCallback(Dart_NativeArguments args)
+{
+    Dart_Handle exception = 0;
+    {
+        ExecutionContext* context = DartUtilities::scriptExecutionContext();
+        if (!context) {
+            exception = Dart_NewStringFromCString("Blob constructor associated document is unavailable");
+            goto fail;
+        }
+
+        Vector<Dart_Handle> blobParts;
+        DartUtilities::extractListElements(Dart_GetNativeArgument(args, 0), exception, blobParts);
+        if (exception)
+            goto fail;
+
+        String type = DartUtilities::dartToStringWithNullCheck(args, 1, exception);
+        if (exception)
+            goto fail;
+
+        String endings = DartUtilities::dartToStringWithNullCheck(args, 2, exception);
+        if (exception)
+            goto fail;
+        if (endings.isNull())
+            endings = "transparent";
+        if (endings != "transparent" && endings != "native") {
+            exception = Dart_NewStringFromCString("The endings property must be either \"transparent\" or \"native\"");
+            goto fail;
+        }
+
+        // FIXMEDART: we could optimize when/where we compute this bool.
+        bool normalizeLineEndingsToNative = endings == "native";
+
+        OwnPtr<BlobData> blobData = BlobData::create();
+        blobData->setContentType(type);
+
+        uint32_t length = blobParts.size();
+
+        for (uint32_t i = 0; i < length; ++i) {
+            Dart_Handle item = blobParts[i];
+            if (Dart_IsByteBuffer(item) || Dart_IsTypedData(item)) {
+                RefPtr<ArrayBuffer> arrayBuffer = DartUtilities::dartToArrayBuffer(item, exception);
+                if (exception)
+                    goto fail;
+                ASSERT(arrayBuffer);
+                blobData->appendArrayBuffer(arrayBuffer.get());
+            } else if (DartDOMWrapper::subtypeOf(item, DartBlob::dartClassId)) {
+                Blob* blob = DartBlob::toNative(item, exception);
+                if (exception)
+                    goto fail;
+                ASSERT(blob);
+                blobData->appendBlob(blob->blobDataHandle(), 0, blob->size());
+            } else {
+                String stringValue = DartUtilities::dartToString(item, exception);
+                if (exception)
+                    goto fail;
+                blobData->appendText(stringValue, normalizeLineEndingsToNative);
+            }
+        }
+
+        long long blobSize = blobData->length();
+        RefPtr<Blob> blob = Blob::create(BlobDataHandle::create(blobData.release(), blobSize));
+        DartDOMWrapper::returnToDart<DartBlob>(args, blob.release());
+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+}
+
+Dart_Handle DartBlob::createWrapper(DartDOMData* domData, Blob* blob)
+{
+    if (!blob)
+        return Dart_Null();
+
+    if (blob->isFile())
+        return DartFile::createWrapper(domData, static_cast<File*>(blob));
+
+    return DartDOMWrapper::createWrapper<DartBlob>(domData, blob);
+}
+
+}