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/*
*
* Copyright 2015, 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 <string.h>
#include <node.h>
#include <nan.h>
#include "grpc/grpc.h"
#include "grpc/byte_buffer_reader.h"
#include "grpc/slice.h"
#include "byte_buffer.h"
namespace grpc {
namespace node {
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;
int length = ::node::Buffer::Length(buffer);
char *data = ::node::Buffer::Data(buffer);
grpc_slice slice = grpc_slice_malloc(length);
memcpy(GRPC_SLICE_START_PTR(slice), data, length);
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) { delete[] data; }
}
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 = grpc_byte_buffer_reader_readall(&reader);
size_t length = GRPC_SLICE_LENGTH(slice);
char *result = new char[length];
memcpy(result, GRPC_SLICE_START_PTR(slice), length);
grpc_slice_unref(slice);
return scope.Escape(MakeFastBuffer(
Nan::NewBuffer(result, length, delete_buffer, NULL).ToLocalChecked()));
}
Local<Value> MakeFastBuffer(Local<Value> slowBuffer) {
Nan::EscapableHandleScope scope;
Local<Object> globalObj = Nan::GetCurrentContext()->Global();
MaybeLocal<Value> constructorValue = Nan::Get(
globalObj, Nan::New("Buffer").ToLocalChecked());
Local<Function> bufferConstructor = Local<Function>::Cast(
constructorValue.ToLocalChecked());
const int argc = 3;
Local<Value> consArgs[argc] = {
slowBuffer,
Nan::New<Number>(::node::Buffer::Length(slowBuffer)),
Nan::New<Number>(0)
};
MaybeLocal<Object> fastBuffer = Nan::NewInstance(bufferConstructor,
argc, consArgs);
return scope.Escape(fastBuffer.ToLocalChecked());
}
} // namespace node
} // namespace grpc
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