iframe-proxy | Sunbelt Computer Software

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// Copyright Joyent, Inc. and other Node contributors.
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#include <node.h>
#include <node_buffer.h>
#include <v8.h>
#include <assert.h>
#include <stdlib.h> // malloc, free
#include <string.h> // memcpy
#ifdef __MINGW32__
# include <platform.h>
# include <platform_win32_winsock.h> // htons, htonl
#ifdef __POSIX__
# include <arpa/inet.h> // htons, htonl
#define MIN(a,b) ((a) < (b) ? (a) : (b))
namespace node {
using namespace v8;
#define SLICE_ARGS(start_arg, end_arg)                               \
  if (!start_arg->IsInt32() || !end_arg->IsInt32()) {                \
    return ThrowException(Exception::TypeError(                      \
          String::New("Bad argument.")));                            \
  int32_t start = start_arg->Int32Value();                           \
  int32_t end = end_arg->Int32Value();                               \
  if (start < 0 || end < 0) {                                        \
    return ThrowException(Exception::TypeError(                      \
          String::New("Bad argument.")));                            \
  if (!(start <= end)) {                                             \
    return ThrowException(Exception::Error(                          \
          String::New("Must have start <= end")));                   \
  if ((size_t)end > parent->length_) {                               \
    return ThrowException(Exception::Error(                          \
          String::New("end cannot be longer than parent.length")));  \
static Persistent<String> length_symbol;
static Persistent<String> chars_written_sym;
static Persistent<String> write_sym;
Persistent<FunctionTemplate> Buffer::constructor_template;
static inline size_t base64_decoded_size(const char *src, size_t size) {
  const char *const end = src + size;
  const int remainder = size % 4;
  size = (size / 4) * 3;
  if (remainder) {
    if (size == 0 && remainder == 1) {
      // special case: 1-byte input cannot be decoded
      size = 0;
    } else {
      // non-padded input, add 1 or 2 extra bytes
      size += 1 + (remainder == 3);
  // check for trailing padding (1 or 2 bytes)
  if (size > 0) {
    if (end[-1] == '=') size--;
    if (end[-2] == '=') size--;
  return size;
static size_t ByteLength (Handle<String> string, enum encoding enc) {
  HandleScope scope;
  if (enc == UTF8) {
    return string->Utf8Length();
  } else if (enc == BASE64) {
    String::Utf8Value v(string);
    return base64_decoded_size(*v, v.length());
  } else if (enc == UCS2) {
    return string->Length() * 2;
  } else if (enc == HEX) {
    return string->Length() / 2;
    return string->Length();
Handle<Object> Buffer::New(Handle<String> string) {
  HandleScope scope;
  // get Buffer from global scope.
  Local<Object> global = v8::Context::GetCurrent()->Global();
  Local<Value> bv = global->Get(String::NewSymbol("Buffer"));
  assert(bv->IsFunction());
  Local<Function> b = Local<Function>::Cast(bv);
  Local<Value> argv[1] = { Local<Value>::New(string) };
  Local<Object> instance = b->NewInstance(1, argv);
  return scope.Close(instance);
Buffer* Buffer::New(size_t length) {
  HandleScope scope;
  Local<Value> arg = Integer::NewFromUnsigned(length);
  Local<Object> b = constructor_template->GetFunction()->NewInstance(1, &arg);
  if (b.IsEmpty()) return NULL;
  return ObjectWrap::Unwrap<Buffer>(b);
Buffer* Buffer::New(char* data, size_t length) {
  HandleScope scope;
  Local<Value> arg = Integer::NewFromUnsigned(0);
  Local<Object> obj = constructor_template->GetFunction()->NewInstance(1, &arg);
  Buffer *buffer = ObjectWrap::Unwrap<Buffer>(obj);
  buffer->Replace(data, length, NULL, NULL);
  return buffer;
Buffer* Buffer::New(char *data, size_t length,
                    free_callback callback, void *hint) {
  HandleScope scope;
  Local<Value> arg = Integer::NewFromUnsigned(0);
  Local<Object> obj = constructor_template->GetFunction()->NewInstance(1, &arg);
  Buffer *buffer = ObjectWrap::Unwrap<Buffer>(obj);
  buffer->Replace(data, length, callback, hint);
  return buffer;
Handle<Value> Buffer::New(const Arguments &args) {
  if (!args.IsConstructCall()) {
    return FromConstructorTemplate(constructor_template, args);
  HandleScope scope;
  Buffer *buffer;
  if (args[0]->IsInt32()) {
    // var buffer = new Buffer(1024);
    size_t length = args[0]->Uint32Value();
    buffer = new Buffer(args.This(), length);
    return ThrowException(Exception::TypeError(String::New("Bad argument")));
  return args.This();
Buffer::Buffer(Handle<Object> wrapper, size_t length) : ObjectWrap() {
  Wrap(wrapper);
  length_ = 0;
  callback_ = NULL;
  Replace(NULL, length, NULL, NULL);
Buffer::~Buffer() {
  Replace(NULL, 0, NULL, NULL);
void Buffer::Replace(char *data, size_t length,
                     free_callback callback, void *hint) {
  HandleScope scope;
  if (callback_) {
    callback_(data_, callback_hint_);
  } else if (length_) {
    delete [] data_;
    V8::AdjustAmountOfExternalAllocatedMemory(-(sizeof(Buffer) + length_));
  length_ = length;
  callback_ = callback;
  callback_hint_ = hint;
  if (callback_) {
    data_ = data;
  } else if (length_) {
    data_ = new char[length_];
    if (data)
      memcpy(data_, data, length_);
    V8::AdjustAmountOfExternalAllocatedMemory(sizeof(Buffer) + length_);
    data_ = NULL;
  handle_->SetIndexedPropertiesToExternalArrayData(data_,
                                                   kExternalUnsignedByteArray,
  handle_->Set(length_symbol, Integer::NewFromUnsigned(length_));
Handle<Value> Buffer::BinarySlice(const Arguments &args) {
  HandleScope scope;
  Buffer *parent = ObjectWrap::Unwrap<Buffer>(args.This());
  SLICE_ARGS(args[0], args[1])
  char *data = parent->data_ + start;
  //Local<String> string = String::New(data, end - start);
  Local<Value> b =  Encode(data, end - start, BINARY);
  return scope.Close(b);
Handle<Value> Buffer::AsciiSlice(const Arguments &args) {
  HandleScope scope;
  Buffer *parent = ObjectWrap::Unwrap<Buffer>(args.This());
  SLICE_ARGS(args[0], args[1])
  char* data = parent->data_ + start;
  Local<String> string = String::New(data, end - start);
  return scope.Close(string);
Handle<Value> Buffer::Utf8Slice(const Arguments &args) {
  HandleScope scope;
  Buffer *parent = ObjectWrap::Unwrap<Buffer>(args.This());
  SLICE_ARGS(args[0], args[1])
  char *data = parent->data_ + start;
  Local<String> string = String::New(data, end - start);
  return scope.Close(string);
Handle<Value> Buffer::Ucs2Slice(const Arguments &args) {
  HandleScope scope;
  Buffer *parent = ObjectWrap::Unwrap<Buffer>(args.This());
  SLICE_ARGS(args[0], args[1])
  uint16_t *data = (uint16_t*)(parent->data_ + start);
  Local<String> string = String::New(data, (end - start) / 2);
  return scope.Close(string);
static const char *base64_table = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                                  "abcdefghijklmnopqrstuvwxyz"
static const int unbase64_table[] =
  {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-2,-1,-1,-2,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
  ,-2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63
  ,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1
  ,-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14
  ,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1
  ,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40
  ,41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
  ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
#define unbase64(x) unbase64_table[(uint8_t)(x)]
Handle<Value> Buffer::Base64Slice(const Arguments &args) {
  HandleScope scope;
  Buffer *parent = ObjectWrap::Unwrap<Buffer>(args.This());
  SLICE_ARGS(args[0], args[1])
  int n = end - start;
  int out_len = (n + 2 - ((n + 2) % 3)) / 3 * 4;
  char *out = new char[out_len];
  uint8_t bitbuf[3];
  int i = start; // data() index
  int j = 0; // out index
  bool b1_oob, b2_oob;
  while (i < end) {
    bitbuf[0] = parent->data_[i++];
    if (i < end) {
      bitbuf[1] = parent->data_[i];
      b1_oob = false;
    }  else {
      bitbuf[1] = 0;
      b1_oob = true;
    if (i < end) {
      bitbuf[2] = parent->data_[i];
      b2_oob = false;
    }  else {
      bitbuf[2] = 0;
      b2_oob = true;
    c = bitbuf[0] >> 2;
    assert(c < 64);
    out[j++] = base64_table[(int)c];
    assert(j < out_len);
    c = ((bitbuf[0] & 0x03) << 4) | (bitbuf[1] >> 4);
    assert(c < 64);
    out[j++] = base64_table[(int)c];
    assert(j < out_len);
    if (b1_oob) {
      out[j++] = '=';
    } else {
      c = ((bitbuf[1] & 0x0F) << 2) | (bitbuf[2] >> 6);
      assert(c < 64);
      out[j++] = base64_table[(int)c];
    assert(j < out_len);
    if (b2_oob) {
      out[j++] = '=';
    } else {
      c = bitbuf[2] & 0x3F;
      assert(c < 64);
      out[j++]  = base64_table[(int)c];
    assert(j <= out_len);
  Local<String> string = String::New(out, out_len);
  delete [] out;
  return scope.Close(string);
// buffer.fill(value, start, end);
Handle<Value> Buffer::Fill(const Arguments &args) {
  HandleScope scope;
  if (!args[0]->IsInt32()) {
    return ThrowException(Exception::Error(String::New(
            "value is not a number")));
  int value = (char)args[0]->Int32Value();
  Buffer *parent = ObjectWrap::Unwrap<Buffer>(args.This());
  SLICE_ARGS(args[1], args[2])
  memset( (void*)(parent->data_ + start),
          value,
          end - start);
  return Undefined();
// var bytesCopied = buffer.copy(target, targetStart, sourceStart, sourceEnd);
Handle<Value> Buffer::Copy(const Arguments &args) {
  HandleScope scope;
  Buffer *source = ObjectWrap::Unwrap<Buffer>(args.This());
  if (!Buffer::HasInstance(args[0])) {
    return ThrowException(Exception::TypeError(String::New(
            "First arg should be a Buffer")));
  Local<Object> target = args[0]->ToObject();
  char *target_data = Buffer::Data(target);
  ssize_t target_length = Buffer::Length(target);
  ssize_t target_start = args[1]->Int32Value();
  ssize_t source_start = args[2]->Int32Value();
  ssize_t source_end = args[3]->IsInt32() ? args[3]->Int32Value()
                                          : source->length_;
  if (source_end < source_start) {
    return ThrowException(Exception::Error(String::New(
            "sourceEnd < sourceStart")));
  // Copy 0 bytes; we're done
  if (source_end == source_start) {
    return scope.Close(Integer::New(0));
  if (target_start < 0 || target_start >= target_length) {
    return ThrowException(Exception::Error(String::New(
            "targetStart out of bounds")));
  if (source_start < 0 || source_start >= source->length_) {
    return ThrowException(Exception::Error(String::New(
            "sourceStart out of bounds")));
  if (source_end < 0 || source_end > source->length_) {
    return ThrowException(Exception::Error(String::New(
            "sourceEnd out of bounds")));
  ssize_t to_copy = MIN(MIN(source_end - source_start,
                            target_length - target_start),
                            source->length_ - source_start);
  // need to use slightly slower memmove is the ranges might overlap
  memmove((void *)(target_data + target_start),
          (const void*)(source->data_ + source_start),
          to_copy);
  return scope.Close(Integer::New(to_copy));
// var charsWritten = buffer.utf8Write(string, offset, [maxLength]);
Handle<Value> Buffer::Utf8Write(const Arguments &args) {
  HandleScope scope;
  Buffer *buffer = ObjectWrap::Unwrap<Buffer>(args.This());
  if (!args[0]->IsString()) {
    return ThrowException(Exception::TypeError(String::New(
            "Argument must be a string")));
  Local<String> s = args[0]->ToString();
  size_t offset = args[1]->Uint32Value();
  if (s->Length() > 0 && offset >= buffer->length_) {
    return ThrowException(Exception::TypeError(String::New(
            "Offset is out of bounds")));
  size_t max_length = args[2]->IsUndefined() ? buffer->length_ - offset
                                             : args[2]->Uint32Value();
  max_length = MIN(buffer->length_ - offset, max_length);
  char* p = buffer->data_ + offset;
  int char_written;
  int written = s->WriteUtf8(p,
                             max_length,
                             &char_written,
                             String::HINT_MANY_WRITES_EXPECTED);
  constructor_template->GetFunction()->Set(chars_written_sym,
                                           Integer::New(char_written));
  if (written > 0 && p[written-1] == '\0') written--;
  return scope.Close(Integer::New(written));
// var charsWritten = buffer.ucs2Write(string, offset, [maxLength]);
Handle<Value> Buffer::Ucs2Write(const Arguments &args) {
  HandleScope scope;
  Buffer *buffer = ObjectWrap::Unwrap<Buffer>(args.This());
  if (!args[0]->IsString()) {
    return ThrowException(Exception::TypeError(String::New(
            "Argument must be a string")));
  Local<String> s = args[0]->ToString();
  size_t offset = args[1]->Uint32Value();
  if (s->Length() > 0 && offset >= buffer->length_) {
    return ThrowException(Exception::TypeError(String::New(
            "Offset is out of bounds")));
  size_t max_length = args[2]->IsUndefined() ? buffer->length_ - offset
                                             : args[2]->Uint32Value();
  max_length = MIN(buffer->length_ - offset, max_length) / 2;
  uint16_t* p = (uint16_t*)(buffer->data_ + offset);
  int written = s->Write(p,
                         max_length,
                         String::HINT_MANY_WRITES_EXPECTED);
  constructor_template->GetFunction()->Set(chars_written_sym,
                                           Integer::New(written));
  return scope.Close(Integer::New(written * 2));
// var charsWritten = buffer.asciiWrite(string, offset);
Handle<Value> Buffer::AsciiWrite(const Arguments &args) {
  HandleScope scope;
  Buffer *buffer = ObjectWrap::Unwrap<Buffer>(args.This());
  if (!args[0]->IsString()) {
    return ThrowException(Exception::TypeError(String::New(
            "Argument must be a string")));
  Local<String> s = args[0]->ToString();
  size_t offset = args[1]->Int32Value();
  if (s->Length() > 0 && offset >= buffer->length_) {
    return ThrowException(Exception::TypeError(String::New(
            "Offset is out of bounds")));
  size_t max_length = args[2]->IsUndefined() ? buffer->length_ - offset
                                             : args[2]->Uint32Value();
  max_length = MIN(s->Length(), MIN(buffer->length_ - offset, max_length));
  char *p = buffer->data_ + offset;
  int written = s->WriteAscii(p,
                              max_length,
                              String::HINT_MANY_WRITES_EXPECTED);
  return scope.Close(Integer::New(written));
// var bytesWritten = buffer.base64Write(string, offset, [maxLength]);
Handle<Value> Buffer::Base64Write(const Arguments &args) {
  HandleScope scope;
  assert(unbase64('/') == 63);
  assert(unbase64('+') == 62);
  assert(unbase64('T') == 19);
  assert(unbase64('Z') == 25);
  assert(unbase64('t') == 45);
  assert(unbase64('z') == 51);
  assert(unbase64(' ') == -2);
  assert(unbase64('\n') == -2);
  assert(unbase64('\r') == -2);
  Buffer *buffer = ObjectWrap::Unwrap<Buffer>(args.This());
  if (!args[0]->IsString()) {
    return ThrowException(Exception::TypeError(String::New(
            "Argument must be a string")));
  String::AsciiValue s(args[0]->ToString());
  size_t offset = args[1]->Int32Value();
  // handle zero-length buffers graciously
  if (offset == 0 && buffer->length_ == 0) {
    return scope.Close(Integer::New(0));
  if (offset >= buffer->length_) {
    return ThrowException(Exception::TypeError(String::New(
            "Offset is out of bounds")));
  const size_t size = base64_decoded_size(*s, s.length());
  if (size > buffer->length_ - offset) {
    // throw exception, don't silently truncate
    return ThrowException(Exception::TypeError(String::New(
            "Buffer too small")));
  char a, b, c, d;
  char* start = buffer->data_ + offset;
  char* dst = start;
  const char *src = *s;
  const char *const srcEnd = src + s.length();
  while (src < srcEnd) {
    int remaining = srcEnd - src;
    while (unbase64(*src) < 0 && src < srcEnd) {
      src++;
      remaining--;
    if (remaining == 0 || *src == '=') break;
    a = unbase64(*src++);
    while (unbase64(*src) < 0 && src < srcEnd) {
      src++;
      remaining--;
    if (remaining <= 1 || *src == '=') break;
    b = unbase64(*src++);
    *dst++ = (a << 2) | ((b & 0x30) >> 4);
    while (unbase64(*src) < 0 && src < srcEnd) {
      src++;
      remaining--;
    if (remaining <= 2 || *src == '=') break;
    c = unbase64(*src++);
    *dst++ = ((b & 0x0F) << 4) | ((c & 0x3C) >> 2);
    while (unbase64(*src) < 0 && src < srcEnd) {
      src++;
      remaining--;
    if (remaining <= 3 || *src == '=') break;
    d = unbase64(*src++);
    *dst++ = ((c & 0x03) << 6) | (d & 0x3F);
  return scope.Close(Integer::New(dst - start));
Handle<Value> Buffer::BinaryWrite(const Arguments &args) {
  HandleScope scope;
  Buffer *buffer = ObjectWrap::Unwrap<Buffer>(args.This());
  if (!args[0]->IsString()) {
    return ThrowException(Exception::TypeError(String::New(
            "Argument must be a string")));
  Local<String> s = args[0]->ToString();
  size_t offset = args[1]->Int32Value();
  if (s->Length() > 0 && offset >= buffer->length_) {
    return ThrowException(Exception::TypeError(String::New(
            "Offset is out of bounds")));
  char *p = (char*)buffer->data_ + offset;
  size_t towrite = MIN((unsigned long) s->Length(), buffer->length_ - offset);
  int written = DecodeWrite(p, towrite, s, BINARY);
  return scope.Close(Integer::New(written));
// var nbytes = Buffer.byteLength("string", "utf8")
Handle<Value> Buffer::ByteLength(const Arguments &args) {
  HandleScope scope;
  if (!args[0]->IsString()) {
    return ThrowException(Exception::TypeError(String::New(
            "Argument must be a string")));
  Local<String> s = args[0]->ToString();
  enum encoding e = ParseEncoding(args[1], UTF8);
  return scope.Close(Integer::New(node::ByteLength(s, e)));
Handle<Value> Buffer::MakeFastBuffer(const Arguments &args) {
  HandleScope scope;
  Buffer *buffer = ObjectWrap::Unwrap<Buffer>(args[0]->ToObject());
  Local<Object> fast_buffer = args[1]->ToObject();;
  uint32_t offset = args[2]->Uint32Value();
  uint32_t length = args[3]->Uint32Value();
  fast_buffer->SetIndexedPropertiesToExternalArrayData(buffer->data_ + offset,
                                                       kExternalUnsignedByteArray,
  return Undefined();
bool Buffer::HasInstance(v8::Handle<v8::Value> val) {
  if (!val->IsObject()) return false;
  v8::Local<v8::Object> obj = val->ToObject();
  if (obj->GetIndexedPropertiesExternalArrayDataType() == kExternalUnsignedByteArray)
    return true;
  // Also check for SlowBuffers that are empty.
  if (constructor_template->HasInstance(obj))
    return true;
  return false;
void Buffer::Initialize(Handle<Object> target) {
  HandleScope scope;
  length_symbol = Persistent<String>::New(String::NewSymbol("length"));
  chars_written_sym = Persistent<String>::New(String::NewSymbol("_charsWritten"));
  Local<FunctionTemplate> t = FunctionTemplate::New(Buffer::New);
  constructor_template = Persistent<FunctionTemplate>::New(t);
  constructor_template->InstanceTemplate()->SetInternalFieldCount(1);
  constructor_template->SetClassName(String::NewSymbol("SlowBuffer"));
  // copy free
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "binarySlice", Buffer::BinarySlice);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "asciiSlice", Buffer::AsciiSlice);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "base64Slice", Buffer::Base64Slice);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "ucs2Slice", Buffer::Ucs2Slice);
  // TODO NODE_SET_PROTOTYPE_METHOD(t, "utf16Slice", Utf16Slice);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "utf8Slice", Buffer::Utf8Slice);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "utf8Write", Buffer::Utf8Write);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "asciiWrite", Buffer::AsciiWrite);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "binaryWrite", Buffer::BinaryWrite);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "base64Write", Buffer::Base64Write);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "ucs2Write", Buffer::Ucs2Write);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "fill", Buffer::Fill);
  NODE_SET_PROTOTYPE_METHOD(constructor_template, "copy", Buffer::Copy);
  NODE_SET_METHOD(constructor_template->GetFunction(),
                  "byteLength",
                  Buffer::ByteLength);
  NODE_SET_METHOD(constructor_template->GetFunction(),
                  "makeFastBuffer",
                  Buffer::MakeFastBuffer);
  target->Set(String::NewSymbol("SlowBuffer"), constructor_template->GetFunction());
}  // namespace node
NODE_MODULE(node_buffer, node::Buffer::Initialize);
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