mirror of https://github.com/grpc/grpc-node.git
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/*
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*
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* Copyright 2016, 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 <node.h>
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#include <nan.h>
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#include <grpc/slice.h>
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#include <grpc/support/alloc.h>
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#include "slice.h"
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namespace grpc {
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namespace node {
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using Nan::Persistent;
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using v8::Local;
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using v8::String;
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using v8::Value;
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namespace {
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void SliceFreeCallback(char *data, void *hint) {
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grpc_slice *slice = reinterpret_cast<grpc_slice*>(hint);
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grpc_slice_unref(*slice);
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delete slice;
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}
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void string_destroy_func(void *user_data) {
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delete reinterpret_cast<Nan::Utf8String*>(user_data);
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}
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void buffer_destroy_func(void *user_data) {
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delete reinterpret_cast<PersistentValue*>(user_data);
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}
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} // namespace
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grpc_slice CreateSliceFromString(const Local<String> source) {
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Nan::HandleScope scope;
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Nan::Utf8String *utf8_value = new Nan::Utf8String(source);
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return grpc_slice_new_with_user_data(**utf8_value, source->Length(),
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string_destroy_func, utf8_value);
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}
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grpc_slice CreateSliceFromBuffer(const Local<Value> source) {
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// Prerequisite: ::node::Buffer::HasInstance(source)
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Nan::HandleScope scope;
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return grpc_slice_new_with_user_data(::node::Buffer::Data(source),
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::node::Buffer::Length(source),
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buffer_destroy_func,
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new PersistentValue(source));
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}
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Local<String> CopyStringFromSlice(const grpc_slice slice) {
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Nan::EscapableHandleScope scope;
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if (GRPC_SLICE_LENGTH(slice) == 0) {
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return scope.Escape(Nan::EmptyString());
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}
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return scope.Escape(Nan::New<String>(
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const_cast<char *>(reinterpret_cast<const char *>(GRPC_SLICE_START_PTR(slice))),
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GRPC_SLICE_LENGTH(slice)).ToLocalChecked());
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}
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Local<Value> CreateBufferFromSlice(const grpc_slice slice) {
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Nan::EscapableHandleScope scope;
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grpc_slice *slice_ptr = new grpc_slice;
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*slice_ptr = grpc_slice_ref(slice);
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return scope.Escape(Nan::NewBuffer(
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const_cast<char *>(reinterpret_cast<const char *>(GRPC_SLICE_START_PTR(*slice_ptr))),
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GRPC_SLICE_LENGTH(*slice_ptr), SliceFreeCallback, slice_ptr).ToLocalChecked());
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}
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} // namespace node
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} // namespace grpc
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