mirror of https://github.com/grpc/grpc-node.git
100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
/*
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*
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* Copyright 2015, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <string.h>
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#include <node.h>
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#include <nan.h>
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#include "grpc/grpc.h"
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#include "grpc/byte_buffer_reader.h"
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#include "grpc/support/slice.h"
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#include "byte_buffer.h"
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namespace grpc {
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namespace node {
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using v8::Context;
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using v8::Function;
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using v8::Local;
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using v8::Object;
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using v8::Number;
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using v8::Value;
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grpc_byte_buffer *BufferToByteBuffer(Local<Value> buffer) {
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Nan::HandleScope scope;
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int length = ::node::Buffer::Length(buffer);
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char *data = ::node::Buffer::Data(buffer);
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gpr_slice slice = gpr_slice_malloc(length);
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memcpy(GPR_SLICE_START_PTR(slice), data, length);
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grpc_byte_buffer *byte_buffer(grpc_raw_byte_buffer_create(&slice, 1));
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gpr_slice_unref(slice);
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return byte_buffer;
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}
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Local<Value> ByteBufferToBuffer(grpc_byte_buffer *buffer) {
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Nan::EscapableHandleScope scope;
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if (buffer == NULL) {
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return scope.Escape(Nan::Null());
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}
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size_t length = grpc_byte_buffer_length(buffer);
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char *result = reinterpret_cast<char *>(calloc(length, sizeof(char)));
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size_t offset = 0;
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grpc_byte_buffer_reader reader;
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grpc_byte_buffer_reader_init(&reader, buffer);
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gpr_slice next;
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while (grpc_byte_buffer_reader_next(&reader, &next) != 0) {
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memcpy(result + offset, GPR_SLICE_START_PTR(next), GPR_SLICE_LENGTH(next));
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offset += GPR_SLICE_LENGTH(next);
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}
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return scope.Escape(MakeFastBuffer(
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Nan::NewBuffer(result, length).ToLocalChecked()));
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}
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Local<Value> MakeFastBuffer(Local<Value> slowBuffer) {
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Nan::EscapableHandleScope scope;
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Local<Object> globalObj = Nan::GetCurrentContext()->Global();
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Local<Function> bufferConstructor = Local<Function>::Cast(
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globalObj->Get(Nan::New("Buffer").ToLocalChecked()));
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Local<Value> consArgs[3] = {
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slowBuffer,
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Nan::New<Number>(::node::Buffer::Length(slowBuffer)),
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Nan::New<Number>(0)
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};
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Local<Object> fastBuffer = bufferConstructor->NewInstance(3, consArgs);
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return scope.Escape(fastBuffer);
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}
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} // namespace node
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} // namespace grpc
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