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