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/*
*
* 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 <grpc/slice.h>
#include <grpc/support/alloc.h>
#include <nan.h>
#include <node.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
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