EncodedJSValue JSC_HOST_CALL constructJSFile(ExecState& exec)
{
auto* constructor = jsCast<DOMConstructorObject*>(exec.callee());
ScriptExecutionContext* context = constructor->scriptExecutionContext();
if (!context)
return throwVMError(&exec, createReferenceError(&exec, "File constructor associated document is unavailable"));
JSValue arg = exec.argument(0);
if (arg.isUndefinedOrNull())
return throwVMTypeError(&exec, ASCIILiteral("First argument to File constructor must be a valid sequence, was undefined or null"));
unsigned blobPartsLength = 0;
JSObject* blobParts = toJSSequence(exec, arg, blobPartsLength);
if (exec.hadException())
return JSValue::encode(jsUndefined());
ASSERT(blobParts);
arg = exec.argument(1);
if (arg.isUndefined())
return throwVMTypeError(&exec, ASCIILiteral("Second argument to File constructor must be a valid string, was undefined"));
String filename = arg.toWTFString(&exec).replace('/', ':');
if (exec.hadException())
return JSValue::encode(jsUndefined());
String normalizedType;
Optional<int64_t> lastModified;
arg = exec.argument(2);
if (!arg.isUndefinedOrNull()) {
JSObject* filePropertyBagObject = arg.getObject();
if (!filePropertyBagObject)
return throwVMTypeError(&exec, ASCIILiteral("Third argument of the constructor is not of type Object"));
// Create the dictionary wrapper from the initializer object.
JSDictionary dictionary(&exec, filePropertyBagObject);
// Attempt to get the type property.
String type;
dictionary.get("type", type);
if (exec.hadException())
return JSValue::encode(jsUndefined());
normalizedType = Blob::normalizedContentType(type);
// Only try to parse the lastModified date if there was not an invalid type argument.
if (type.isEmpty() || !normalizedType.isEmpty()) {
dictionary.get("lastModified", lastModified);
if (exec.hadException())
return JSValue::encode(jsUndefined());
}
}
if (!lastModified)
lastModified = currentTimeMS();
BlobBuilder blobBuilder;
for (unsigned i = 0; i < blobPartsLength; ++i) {
JSValue item = blobParts->get(&exec, i);
if (exec.hadException())
return JSValue::encode(jsUndefined());
if (ArrayBuffer* arrayBuffer = toArrayBuffer(item))
blobBuilder.append(arrayBuffer);
else if (RefPtr<ArrayBufferView> arrayBufferView = toArrayBufferView(item))
blobBuilder.append(WTFMove(arrayBufferView));
else if (Blob* blob = JSBlob::toWrapped(item))
blobBuilder.append(blob);
else {
String string = item.toWTFString(&exec);
if (exec.hadException())
return JSValue::encode(jsUndefined());
blobBuilder.append(string, ASCIILiteral("transparent"));
}
}
auto file = File::create(blobBuilder.finalize(), filename, normalizedType, lastModified.value());
return JSValue::encode(CREATE_DOM_WRAPPER(constructor->globalObject(), File, WTFMove(file)));
}
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(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 = Blob::create(blobBuilder.finalize(), Blob::normalizedContentType(type));
return JSValue::encode(CREATE_DOM_WRAPPER(jsConstructor->globalObject(), Blob, blob.get()));
}