Line data    Source code

       1             : /*
       2             :  *
       3             :  * Copyright 2015, Google Inc.
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions are
       8             :  * met:
       9             :  *
      10             :  *     * Redistributions of source code must retain the above copyright
      11             :  * notice, this list of conditions and the following disclaimer.
      12             :  *     * Redistributions in binary form must reproduce the above
      13             :  * copyright notice, this list of conditions and the following disclaimer
      14             :  * in the documentation and/or other materials provided with the
      15             :  * distribution.
      16             :  *     * Neither the name of Google Inc. nor the names of its
      17             :  * contributors may be used to endorse or promote products derived from
      18             :  * this software without specific prior written permission.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      21             :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      22             :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      23             :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      24             :  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      25             :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      26             :  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      27             :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      28             :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29             :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      30             :  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      31             :  *
      32             :  */
      33             : 
      34             : #include <string.h>
      35             : 
      36             : #include <node.h>
      37             : #include <nan.h>
      38             : #include "grpc/grpc.h"
      39             : #include "grpc/byte_buffer_reader.h"
      40             : #include "grpc/support/slice.h"
      41             : 
      42             : #include "byte_buffer.h"
      43             : 
      44             : namespace grpc {
      45             : namespace node {
      46             : 
      47             : 
      48             : using v8::Context;
      49             : using v8::Function;
      50             : using v8::Local;
      51             : using v8::Object;
      52             : using v8::Number;
      53             : using v8::Value;
      54             : 
      55         191 : grpc_byte_buffer *BufferToByteBuffer(Local<Value> buffer) {
      56             :   Nan::HandleScope scope;
      57         191 :   int length = ::node::Buffer::Length(buffer);
      58         191 :   char *data = ::node::Buffer::Data(buffer);
      59         191 :   gpr_slice slice = gpr_slice_malloc(length);
      60         191 :   memcpy(GPR_SLICE_START_PTR(slice), data, length);
      61         191 :   grpc_byte_buffer *byte_buffer(grpc_raw_byte_buffer_create(&slice, 1));
      62         191 :   gpr_slice_unref(slice);
      63         382 :   return byte_buffer;
      64             : }
      65             : 
      66         254 : Local<Value> ByteBufferToBuffer(grpc_byte_buffer *buffer) {
      67             :   Nan::EscapableHandleScope scope;
      68         254 :   if (buffer == NULL) {
      69          69 :     return scope.Escape(Nan::Null());
      70             :   }
      71         185 :   size_t length = grpc_byte_buffer_length(buffer);
      72         185 :   char *result = reinterpret_cast<char *>(calloc(length, sizeof(char)));
      73         185 :   size_t offset = 0;
      74             :   grpc_byte_buffer_reader reader;
      75         185 :   grpc_byte_buffer_reader_init(&reader, buffer);
      76             :   gpr_slice next;
      77         880 :   while (grpc_byte_buffer_reader_next(&reader, &next) != 0) {
      78         510 :     memcpy(result + offset, GPR_SLICE_START_PTR(next), GPR_SLICE_LENGTH(next));
      79         510 :     offset += GPR_SLICE_LENGTH(next);
      80         510 :     gpr_slice_unref(next);
      81             :   }
      82             :   return scope.Escape(MakeFastBuffer(
      83         740 :       Nan::NewBuffer(result, length).ToLocalChecked()));
      84             : }
      85             : 
      86         189 : Local<Value> MakeFastBuffer(Local<Value> slowBuffer) {
      87             :   Nan::EscapableHandleScope scope;
      88         189 :   Local<Object> globalObj = Nan::GetCurrentContext()->Global();
      89             :   Local<Function> bufferConstructor = Local<Function>::Cast(
      90         567 :       globalObj->Get(Nan::New("Buffer").ToLocalChecked()));
      91             :   Local<Value> consArgs[3] = {
      92             :     slowBuffer,
      93             :     Nan::New<Number>(::node::Buffer::Length(slowBuffer)),
      94             :     Nan::New<Number>(0)
      95         567 :   };
      96         189 :   Local<Object> fastBuffer = bufferConstructor->NewInstance(3, consArgs);
      97         378 :   return scope.Escape(fastBuffer);
      98             : }
      99             : }  // namespace node
     100             : }  // namespace grpc