v8::Handle<v8::Value> V8Blob::constructorCustom(const v8::Arguments& args)
{
if (!args.Length()) {
RefPtr<Blob> blob = Blob::create();
return toV8(blob.get(), args.Holder(), args.GetIsolate());
}
v8::Local<v8::Value> firstArg = args[0];
if (!firstArg->IsArray())
return throwTypeError("First argument of the constructor is not of type Array", args.GetIsolate());
String type;
String endings = ASCIILiteral("transparent");
if (args.Length() > 1) {
if (!args[1]->IsObject())
return throwTypeError("Second argument of the constructor is not of type Object", args.GetIsolate());
V8TRYCATCH(Dictionary, dictionary, Dictionary(args[1], args.GetIsolate()));
V8TRYCATCH(bool, containsEndings, dictionary.get("endings", endings));
if (containsEndings) {
if (endings != "transparent" && endings != "native")
return throwTypeError("The endings property must be either \"transparent\" or \"native\"", args.GetIsolate());
}
V8TRYCATCH(bool, containsType, dictionary.get("type", type));
UNUSED_PARAM(containsType);
if (!type.containsOnlyASCII())
return throwError(v8SyntaxError, "type must consist of ASCII characters", args.GetIsolate());
type.makeLower();
}
ASSERT(endings == "transparent" || endings == "native");
BlobBuilder blobBuilder;
V8TRYCATCH(v8::Local<v8::Array>, blobParts, v8::Local<v8::Array>::Cast(firstArg));
uint32_t length = blobParts->Length();
for (uint32_t i = 0; i < length; ++i) {
v8::Local<v8::Value> item = blobParts->Get(v8::Uint32::New(i));
ASSERT(!item.IsEmpty());
#if ENABLE(BLOB)
if (V8ArrayBuffer::HasInstance(item, args.GetIsolate(), worldType(args.GetIsolate()))) {
ArrayBuffer* arrayBuffer = V8ArrayBuffer::toNative(v8::Handle<v8::Object>::Cast(item));
ASSERT(arrayBuffer);
blobBuilder.append(arrayBuffer);
} else if (V8ArrayBufferView::HasInstance(item, args.GetIsolate(), worldType(args.GetIsolate()))) {
ArrayBufferView* arrayBufferView = V8ArrayBufferView::toNative(v8::Handle<v8::Object>::Cast(item));
ASSERT(arrayBufferView);
blobBuilder.append(arrayBufferView);
} else
#endif
if (V8Blob::HasInstance(item, args.GetIsolate(), worldType(args.GetIsolate()))) {
Blob* blob = V8Blob::toNative(v8::Handle<v8::Object>::Cast(item));
ASSERT(blob);
blobBuilder.append(blob);
} else {
V8TRYCATCH(String, stringValue, toWebCoreString(item));
blobBuilder.append(stringValue, endings);
}
}
RefPtr<Blob> blob = blobBuilder.getBlob(type);
return toV8(blob.get(), args.Holder(), args.GetIsolate());
}
EncodedJSValue JSC_HOST_CALL JSBlobConstructor::constructJSBlob(ExecState* exec)
{
JSBlobConstructor* jsConstructor = jsCast<JSBlobConstructor*>(exec->callee());
ScriptExecutionContext* context = jsConstructor->scriptExecutionContext();
if (!context)
return throwVMError(exec, createReferenceError(exec, "Blob constructor associated document is unavailable"));
if (!exec->argumentCount()) {
RefPtr<Blob> blob = Blob::create();
return JSValue::encode(CREATE_DOM_WRAPPER(exec, jsConstructor->globalObject(), Blob, blob.get()));
}
unsigned blobPartsLength = 0;
JSObject* blobParts = toJSSequence(exec, exec->argument(0), blobPartsLength);
if (exec->hadException())
return JSValue::encode(jsUndefined());
ASSERT(blobParts);
String type;
String endings = ASCIILiteral("transparent");
if (exec->argumentCount() > 1) {
JSValue blobPropertyBagValue = exec->argument(1);
if (!blobPropertyBagValue.isObject())
return throwVMError(exec, createTypeError(exec, "Second argument of the constructor is not of type Object"));
// Given the above test, this will always yield an object.
JSObject* blobPropertyBagObject = blobPropertyBagValue.toObject(exec);
// Create the dictionary wrapper from the initializer object.
JSDictionary dictionary(exec, blobPropertyBagObject);
// Attempt to get the endings property and validate it.
bool containsEndings = dictionary.get("endings", endings);
if (exec->hadException())
return JSValue::encode(jsUndefined());
if (containsEndings) {
if (endings != "transparent" && endings != "native")
return throwVMError(exec, createTypeError(exec, "The endings property must be either \"transparent\" or \"native\""));
}
// Attempt to get the type property.
dictionary.get("type", type);
if (exec->hadException())
return JSValue::encode(jsUndefined());
}
ASSERT(endings == "transparent" || endings == "native");
BlobBuilder blobBuilder;
for (unsigned i = 0; i < blobPartsLength; ++i) {
JSValue item = blobParts->get(exec, i);
if (exec->hadException())
return JSValue::encode(jsUndefined());
#if ENABLE(BLOB)
if (ArrayBuffer* arrayBuffer = toArrayBuffer(item))
blobBuilder.append(arrayBuffer);
else if (RefPtr<ArrayBufferView> arrayBufferView = toArrayBufferView(item))
blobBuilder.append(arrayBufferView.release());
else
#endif
if (Blob* blob = toBlob(item))
blobBuilder.append(blob);
else {
String string = item.toString(exec)->value(exec);
if (exec->hadException())
return JSValue::encode(jsUndefined());
blobBuilder.append(string, endings);
}
}
RefPtr<Blob> blob = blobBuilder.getBlob(type);
return JSValue::encode(CREATE_DOM_WRAPPER(exec, jsConstructor->globalObject(), Blob, blob.get()));
}