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website/functions/node_modules/grpc/ext/byte_buffer.cc

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+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <string.h>
+
+#include <nan.h>
+#include <node.h>
+#include "grpc/byte_buffer_reader.h"
+#include "grpc/grpc.h"
+#include "grpc/slice.h"
+
+#include "byte_buffer.h"
+#include "slice.h"
+
+namespace grpc {
+namespace node {
+
+using Nan::Callback;
+using Nan::MaybeLocal;
+
+using v8::Function;
+using v8::Local;
+using v8::Object;
+using v8::Number;
+using v8::Value;
+
+grpc_byte_buffer *BufferToByteBuffer(Local<Value> buffer) {
+  Nan::HandleScope scope;
+  grpc_slice slice = CreateSliceFromBuffer(buffer);
+  grpc_byte_buffer *byte_buffer(grpc_raw_byte_buffer_create(&slice, 1));
+  grpc_slice_unref(slice);
+  return byte_buffer;
+}
+
+namespace {
+void delete_buffer(char *data, void *hint) {
+  grpc_slice *slice = static_cast<grpc_slice *>(hint);
+  grpc_slice_unref(*slice);
+  delete slice;
+}
+}
+
+Local<Value> ByteBufferToBuffer(grpc_byte_buffer *buffer) {
+  Nan::EscapableHandleScope scope;
+  if (buffer == NULL) {
+    return scope.Escape(Nan::Null());
+  }
+  grpc_byte_buffer_reader reader;
+  if (!grpc_byte_buffer_reader_init(&reader, buffer)) {
+    Nan::ThrowError("Error initializing byte buffer reader.");
+    return scope.Escape(Nan::Undefined());
+  }
+  grpc_slice *slice = new grpc_slice;
+  *slice = grpc_byte_buffer_reader_readall(&reader);
+  grpc_byte_buffer_reader_destroy(&reader);
+  char *result = reinterpret_cast<char *>(GRPC_SLICE_START_PTR(*slice));
+  size_t length = GRPC_SLICE_LENGTH(*slice);
+  Local<Value> buf =
+      Nan::NewBuffer(result, length, delete_buffer, slice).ToLocalChecked();
+  return scope.Escape(buf);
+}
+
+}  // namespace node
+}  // namespace grpc