node/src/node_buffer.cc at v1.8.0-commit · afshing/node · GitHub

History

770 lines (563 loc) · 21.8 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

#include "node.h"

#include "node_buffer.h"

#include "env.h"

#include "env-inl.h"

#include "smalloc.h"

#include "string_bytes.h"

#include "v8-profiler.h"

#include "v8.h"

#include <string.h>

#include <limits.h>

#define MIN(a, b) ((a) < (b) ? (a) : (b))

#define CHECK_NOT_OOB(r) \

do { \

if (!(r)) return env->ThrowRangeError("out of range index"); \

} while (0)

#define ARGS_THIS(argT) \

Local<Object> obj = argT; \

size_t obj_length = obj->GetIndexedPropertiesExternalArrayDataLength(); \

char* obj_data = static_cast<char*>( \

obj->GetIndexedPropertiesExternalArrayData()); \

if (obj_length > 0) \

CHECK_NE(obj_data, nullptr);

#define SLICE_START_END(start_arg, end_arg, end_max) \

size_t start; \

size_t end; \

CHECK_NOT_OOB(ParseArrayIndex(start_arg, 0, &start)); \

CHECK_NOT_OOB(ParseArrayIndex(end_arg, end_max, &end)); \

if (end < start) end = start; \

CHECK_NOT_OOB(end <= end_max); \

size_t length = end - start;

namespace node {

namespace Buffer {

using v8::Context;

using v8::EscapableHandleScope;

using v8::Function;

using v8::FunctionCallbackInfo;

using v8::FunctionTemplate;

using v8::Handle;

using v8::HandleScope;

using v8::Isolate;

using v8::Local;

using v8::Number;

using v8::Object;

using v8::String;

using v8::Uint32;

using v8::Value;

bool HasInstance(Handle<Value> val) {

return val->IsObject() && HasInstance(val.As<Object>());

}

bool HasInstance(Handle<Object> obj) {

if (!obj->HasIndexedPropertiesInExternalArrayData())

return false;

v8::ExternalArrayType type = obj->GetIndexedPropertiesExternalArrayDataType();

return type == v8::kExternalUint8Array;

}

char* Data(Handle<Value> val) {

CHECK(val->IsObject());

// Use a fully qualified name here to work around a bug in gcc 4.2.

// It mistakes an unadorned call to Data() for the v8::String::Data type.

return node::Buffer::Data(val.As<Object>());

}

char* Data(Handle<Object> obj) {

CHECK(obj->HasIndexedPropertiesInExternalArrayData());

return static_cast<char*>(obj->GetIndexedPropertiesExternalArrayData());

}

size_t Length(Handle<Value> val) {

CHECK(val->IsObject());

return Length(val.As<Object>());

}

size_t Length(Handle<Object> obj) {

CHECK(obj->HasIndexedPropertiesInExternalArrayData());

return obj->GetIndexedPropertiesExternalArrayDataLength();

}

Local<Object> New(Isolate* isolate, Handle<String> string, enum encoding enc) {

EscapableHandleScope scope(isolate);

size_t length = StringBytes::Size(isolate, string, enc);

Local<Object> buf = New(length);

char* data = Buffer::Data(buf);

StringBytes::Write(isolate, data, length, string, enc);

return scope.Escape(buf);

}

Local<Object> New(Isolate* isolate, size_t length) {

EscapableHandleScope handle_scope(isolate);

Local<Object> obj = Buffer::New(Environment::GetCurrent(isolate), length);

return handle_scope.Escape(obj);

}

// TODO(trevnorris): these have a flaw by needing to call the Buffer inst then

// Alloc. continue to look for a better architecture.

Local<Object> New(Environment* env, size_t length) {

EscapableHandleScope scope(env->isolate());

CHECK_LE(length, kMaxLength);

Local<Value> arg = Uint32::NewFromUnsigned(env->isolate(), length);

Local<Object> obj = env->buffer_constructor_function()->NewInstance(1, &arg);

smalloc::Alloc(env, obj, length);

return scope.Escape(obj);

}

Local<Object> New(Isolate* isolate, const char* data, size_t length) {

Environment* env = Environment::GetCurrent(isolate);

EscapableHandleScope handle_scope(env->isolate());

Local<Object> obj = Buffer::New(env, data, length);

return handle_scope.Escape(obj);

}

// TODO(trevnorris): for backwards compatibility this is left to copy the data,

// but for consistency w/ the other should use data. And a copy version renamed

// to something else.

Local<Object> New(Environment* env, const char* data, size_t length) {

EscapableHandleScope scope(env->isolate());

CHECK_LE(length, kMaxLength);

Local<Value> arg = Uint32::NewFromUnsigned(env->isolate(), length);

Local<Object> obj = env->buffer_constructor_function()->NewInstance(1, &arg);

// TODO(trevnorris): done like this to handle HasInstance since only checks

// if external array data has been set, but would like to use a better

// approach if v8 provided one.

char* new_data;

if (length > 0) {

new_data = static_cast<char*>(malloc(length));

if (new_data == nullptr)

FatalError("node::Buffer::New(const char*, size_t)", "Out Of Memory");

memcpy(new_data, data, length);

} else {

new_data = nullptr;

}

smalloc::Alloc(env, obj, new_data, length);

return scope.Escape(obj);

}

Local<Object> New(Isolate* isolate,

char* data,

size_t length,

smalloc::FreeCallback callback,

void* hint) {

Environment* env = Environment::GetCurrent(isolate);

EscapableHandleScope handle_scope(env->isolate());

Local<Object> obj = Buffer::New(env, data, length, callback, hint);

return handle_scope.Escape(obj);

}

Local<Object> New(Environment* env,

char* data,

size_t length,

smalloc::FreeCallback callback,

void* hint) {

EscapableHandleScope scope(env->isolate());

CHECK_LE(length, kMaxLength);

Local<Value> arg = Uint32::NewFromUnsigned(env->isolate(), length);

Local<Object> obj = env->buffer_constructor_function()->NewInstance(1, &arg);

smalloc::Alloc(env, obj, data, length, callback, hint);

return scope.Escape(obj);

}

Local<Object> Use(Isolate* isolate, char* data, uint32_t length) {

Environment* env = Environment::GetCurrent(isolate);

EscapableHandleScope handle_scope(env->isolate());

Local<Object> obj = Buffer::Use(env, data, length);

return handle_scope.Escape(obj);

}

Local<Object> Use(Environment* env, char* data, uint32_t length) {

EscapableHandleScope scope(env->isolate());

CHECK_LE(length, kMaxLength);

Local<Value> arg = Uint32::NewFromUnsigned(env->isolate(), length);

Local<Object> obj = env->buffer_constructor_function()->NewInstance(1, &arg);

smalloc::Alloc(env, obj, data, length);

return scope.Escape(obj);

}

template <encoding encoding>

void StringSlice(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

ARGS_THIS(args.This())

SLICE_START_END(args[0], args[1], obj_length)

args.GetReturnValue().Set(

StringBytes::Encode(env->isolate(), obj_data + start, length, encoding));

}

template <>

void StringSlice<UCS2>(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

ARGS_THIS(args.This())

SLICE_START_END(args[0], args[1], obj_length)

length /= 2;

const char* data = obj_data + start;

const uint16_t* buf;

bool release = false;

// Node's "ucs2" encoding expects LE character data inside a Buffer, so we

// need to reorder on BE platforms. See http://nodejs.org/api/buffer.html

// regarding Node's "ucs2" encoding specification.

const bool aligned = (reinterpret_cast<uintptr_t>(data) % sizeof(*buf) == 0);

if (IsLittleEndian() && aligned) {

buf = reinterpret_cast<const uint16_t*>(data);

} else {

// Make a copy to avoid unaligned accesses in v8::String::NewFromTwoByte().

uint16_t* copy = new uint16_t[length];

for (size_t i = 0, k = 0; i < length; i += 1, k += 2) {

// Assumes that the input is little endian.

const uint8_t lo = static_cast<uint8_t>(data[k + 0]);

const uint8_t hi = static_cast<uint8_t>(data[k + 1]);

copy[i] = lo | hi << 8;

}

buf = copy;

release = true;

}

args.GetReturnValue().Set(StringBytes::Encode(env->isolate(), buf, length));

if (release)

delete[] buf;

}

void BinarySlice(const FunctionCallbackInfo<Value>& args) {

StringSlice<BINARY>(args);

}

void AsciiSlice(const FunctionCallbackInfo<Value>& args) {

StringSlice<ASCII>(args);

}

void Utf8Slice(const FunctionCallbackInfo<Value>& args) {

StringSlice<UTF8>(args);

}

void Ucs2Slice(const FunctionCallbackInfo<Value>& args) {

StringSlice<UCS2>(args);

}

void HexSlice(const FunctionCallbackInfo<Value>& args) {

StringSlice<HEX>(args);

}

void Base64Slice(const FunctionCallbackInfo<Value>& args) {

StringSlice<BASE64>(args);

}

// bytesCopied = buffer.copy(target[, targetStart][, sourceStart][, sourceEnd]);

void Copy(const FunctionCallbackInfo<Value> &args) {

Environment* env = Environment::GetCurrent(args);

Local<Object> target = args[0]->ToObject(env->isolate());

if (!HasInstance(target))

return env->ThrowTypeError("first arg should be a Buffer");

ARGS_THIS(args.This())

size_t target_length = target->GetIndexedPropertiesExternalArrayDataLength();

char* target_data = static_cast<char*>(

target->GetIndexedPropertiesExternalArrayData());

size_t target_start;

size_t source_start;

size_t source_end;

CHECK_NOT_OOB(ParseArrayIndex(args[1], 0, &target_start));

CHECK_NOT_OOB(ParseArrayIndex(args[2], 0, &source_start));

CHECK_NOT_OOB(ParseArrayIndex(args[3], obj_length, &source_end));

// Copy 0 bytes; we're done

if (target_start >= target_length || source_start >= source_end)

return args.GetReturnValue().Set(0);

if (source_start > obj_length)

return env->ThrowRangeError("out of range index");

if (source_end - source_start > target_length - target_start)

source_end = source_start + target_length - target_start;

uint32_t to_copy = MIN(MIN(source_end - source_start,

target_length - target_start),

obj_length - source_start);

memmove(target_data + target_start, obj_data + source_start, to_copy);

args.GetReturnValue().Set(to_copy);

}

void Fill(const FunctionCallbackInfo<Value>& args) {

ARGS_THIS(args[0].As<Object>())

size_t start = args[2]->Uint32Value();

size_t end = args[3]->Uint32Value();

size_t length = end - start;

CHECK(length + start <= obj_length);

if (args[1]->IsNumber()) {

int value = args[1]->Uint32Value() & 255;

memset(obj_data + start, value, length);

return;

}

node::Utf8Value str(args.GetIsolate(), args[1]);

size_t str_length = str.length();

size_t in_there = str_length;

char* ptr = obj_data + start + str_length;

if (str_length == 0)

return;

memcpy(obj_data + start, *str, MIN(str_length, length));

if (str_length >= length)

return;

while (in_there < length - in_there) {

memcpy(ptr, obj_data + start, in_there);

ptr += in_there;

in_there *= 2;

}

if (in_there < length) {

memcpy(ptr, obj_data + start, length - in_there);

in_there = length;

}

template <encoding encoding>

void StringWrite(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

ARGS_THIS(args.This())

if (!args[0]->IsString())

return env->ThrowTypeError("Argument must be a string");

Local<String> str = args[0]->ToString(env->isolate());

if (encoding == HEX && str->Length() % 2 != 0)

return env->ThrowTypeError("Invalid hex string");

size_t offset;

size_t max_length;

CHECK_NOT_OOB(ParseArrayIndex(args[1], 0, &offset));

CHECK_NOT_OOB(ParseArrayIndex(args[2], obj_length - offset, &max_length));

max_length = MIN(obj_length - offset, max_length);

if (max_length == 0)

return args.GetReturnValue().Set(0);

if (offset >= obj_length)

return env->ThrowRangeError("Offset is out of bounds");

uint32_t written = StringBytes::Write(env->isolate(),

obj_data + offset,

max_length,

str,

encoding,

nullptr);

args.GetReturnValue().Set(written);

}

void Base64Write(const FunctionCallbackInfo<Value>& args) {

StringWrite<BASE64>(args);

}

void BinaryWrite(const FunctionCallbackInfo<Value>& args) {

StringWrite<BINARY>(args);

}

void Utf8Write(const FunctionCallbackInfo<Value>& args) {

StringWrite<UTF8>(args);

}

void Ucs2Write(const FunctionCallbackInfo<Value>& args) {

StringWrite<UCS2>(args);

}

void HexWrite(const FunctionCallbackInfo<Value>& args) {

StringWrite<HEX>(args);

}

void AsciiWrite(const FunctionCallbackInfo<Value>& args) {

StringWrite<ASCII>(args);

}

static inline void Swizzle(char* start, unsigned int len) {

char* end = start + len - 1;

while (start < end) {

char tmp = *start;

*start++ = *end;

*end-- = tmp;

}

template <typename T, enum Endianness endianness>

void ReadFloatGeneric(const FunctionCallbackInfo<Value>& args) {

ARGS_THIS(args[0].As<Object>());

uint32_t offset = args[1]->Uint32Value();

CHECK_LE(offset + sizeof(T), obj_length);

union NoAlias {

T val;

char bytes[sizeof(T)];

};

union NoAlias na;

const char* ptr = static_cast<const char*>(obj_data) + offset;

memcpy(na.bytes, ptr, sizeof(na.bytes));

if (endianness != GetEndianness())

Swizzle(na.bytes, sizeof(na.bytes));

args.GetReturnValue().Set(na.val);

}

void ReadFloatLE(const FunctionCallbackInfo<Value>& args) {

ReadFloatGeneric<float, kLittleEndian>(args);

}

void ReadFloatBE(const FunctionCallbackInfo<Value>& args) {

ReadFloatGeneric<float, kBigEndian>(args);

}

void ReadDoubleLE(const FunctionCallbackInfo<Value>& args) {

ReadFloatGeneric<double, kLittleEndian>(args);

}

void ReadDoubleBE(const FunctionCallbackInfo<Value>& args) {

ReadFloatGeneric<double, kBigEndian>(args);

}

template <typename T, enum Endianness endianness>

uint32_t WriteFloatGeneric(const FunctionCallbackInfo<Value>& args) {

ARGS_THIS(args[0].As<Object>())

T val = args[1]->NumberValue();

uint32_t offset = args[2]->Uint32Value();

CHECK_LE(offset + sizeof(T), obj_length);

union NoAlias {

T val;

char bytes[sizeof(T)];

};

union NoAlias na = { val };

char* ptr = static_cast<char*>(obj_data) + offset;

if (endianness != GetEndianness())

Swizzle(na.bytes, sizeof(na.bytes));

memcpy(ptr, na.bytes, sizeof(na.bytes));

return offset + sizeof(na.bytes);

}

void WriteFloatLE(const FunctionCallbackInfo<Value>& args) {

args.GetReturnValue().Set(WriteFloatGeneric<float, kLittleEndian>(args));

}

void WriteFloatBE(const FunctionCallbackInfo<Value>& args) {

args.GetReturnValue().Set(WriteFloatGeneric<float, kBigEndian>(args));

}

void WriteDoubleLE(const FunctionCallbackInfo<Value>& args) {

args.GetReturnValue().Set(WriteFloatGeneric<double, kLittleEndian>(args));

}

void WriteDoubleBE(const FunctionCallbackInfo<Value>& args) {

args.GetReturnValue().Set(WriteFloatGeneric<double, kBigEndian>(args));

}

void ByteLength(const FunctionCallbackInfo<Value> &args) {

Environment* env = Environment::GetCurrent(args);

if (!args[0]->IsString())

return env->ThrowTypeError("Argument must be a string");

Local<String> s = args[0]->ToString(env->isolate());

enum encoding e = ParseEncoding(env->isolate(), args[1], UTF8);

uint32_t size = StringBytes::Size(env->isolate(), s, e);

args.GetReturnValue().Set(size);

}

void Compare(const FunctionCallbackInfo<Value> &args) {

Local<Object> obj_a = args[0].As<Object>();

char* obj_a_data =

static_cast<char*>(obj_a->GetIndexedPropertiesExternalArrayData());

size_t obj_a_len = obj_a->GetIndexedPropertiesExternalArrayDataLength();

Local<Object> obj_b = args[1].As<Object>();

char* obj_b_data =

static_cast<char*>(obj_b->GetIndexedPropertiesExternalArrayData());

size_t obj_b_len = obj_b->GetIndexedPropertiesExternalArrayDataLength();

size_t cmp_length = MIN(obj_a_len, obj_b_len);

int32_t val = memcmp(obj_a_data, obj_b_data, cmp_length);

// Normalize val to be an integer in the range of [1, -1] since

// implementations of memcmp() can vary by platform.

if (val == 0) {

if (obj_a_len > obj_b_len)

val = 1;

else if (obj_a_len < obj_b_len)

val = -1;

} else {

if (val > 0)

val = 1;

else

val = -1;

}

args.GetReturnValue().Set(val);

}

int32_t IndexOf(const char* haystack,

size_t h_length,

const char* needle,

size_t n_length) {

CHECK_GE(h_length, n_length);

// TODO(trevnorris): Implement Boyer-Moore string search algorithm.

for (size_t i = 0; i < h_length - n_length + 1; i++) {

if (haystack[i] == needle[0]) {

if (memcmp(haystack + i, needle, n_length) == 0)

return i;

}

return -1;

}

void IndexOfString(const FunctionCallbackInfo<Value>& args) {

ASSERT(args[0]->IsObject());

ASSERT(args[1]->IsString());

ASSERT(args[2]->IsNumber());

ARGS_THIS(args[0].As<Object>());

node::Utf8Value str(args.GetIsolate(), args[1]);

int32_t offset_i32 = args[2]->Int32Value();

uint32_t offset;

if (offset_i32 < 0) {

if (offset_i32 + static_cast<int32_t>(obj_length) < 0)

offset = 0;

else

offset = static_cast<uint32_t>(obj_length + offset_i32);

} else {

offset = static_cast<uint32_t>(offset_i32);

}

if (str.length() == 0 ||

obj_length == 0 ||

(offset != 0 && str.length() + offset <= str.length()) ||

str.length() + offset > obj_length)

return args.GetReturnValue().Set(-1);

int32_t r =

IndexOf(obj_data + offset, obj_length - offset, *str, str.length());

args.GetReturnValue().Set(r == -1 ? -1 : static_cast<int32_t>(r + offset));

}

void IndexOfBuffer(const FunctionCallbackInfo<Value>& args) {

ASSERT(args[0]->IsObject());

ASSERT(args[1]->IsObject());

ASSERT(args[2]->IsNumber());

ARGS_THIS(args[0].As<Object>());

Local<Object> buf = args[1].As<Object>();

int32_t offset_i32 = args[2]->Int32Value();

size_t buf_length = buf->GetIndexedPropertiesExternalArrayDataLength();

char* buf_data =

static_cast<char*>(buf->GetIndexedPropertiesExternalArrayData());

uint32_t offset;

if (buf_length > 0)

CHECK_NE(buf_data, nullptr);

if (offset_i32 < 0) {

if (offset_i32 + static_cast<int32_t>(obj_length) < 0)

offset = 0;

else

offset = static_cast<uint32_t>(obj_length + offset_i32);

} else {

offset = static_cast<uint32_t>(offset_i32);

}

if (buf_length == 0 ||

obj_length == 0 ||

(offset != 0 && buf_length + offset <= buf_length) ||

buf_length + offset > obj_length)

return args.GetReturnValue().Set(-1);

int32_t r =

IndexOf(obj_data + offset, obj_length - offset, buf_data, buf_length);

args.GetReturnValue().Set(r == -1 ? -1 : static_cast<int32_t>(r + offset));

}

void IndexOfNumber(const FunctionCallbackInfo<Value>& args) {

ASSERT(args[0]->IsObject());

ASSERT(args[1]->IsNumber());

ASSERT(args[2]->IsNumber());

ARGS_THIS(args[0].As<Object>());

uint32_t needle = args[1]->Uint32Value();

int32_t offset_i32 = args[2]->Int32Value();

uint32_t offset;

if (offset_i32 < 0) {

if (offset_i32 + static_cast<int32_t>(obj_length) < 0)

offset = 0;

else

offset = static_cast<uint32_t>(obj_length + offset_i32);

} else {

offset = static_cast<uint32_t>(offset_i32);

}

if (obj_length == 0 || offset + 1 > obj_length)

return args.GetReturnValue().Set(-1);

void* ptr = memchr(obj_data + offset, needle, obj_length - offset);

char* ptr_char = static_cast<char*>(ptr);

args.GetReturnValue().Set(

ptr ? static_cast<int32_t>(ptr_char - obj_data) : -1);

}

// pass Buffer object to load prototype methods

void SetupBufferJS(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

CHECK(args[0]->IsFunction());

Local<Function> bv = args[0].As<Function>();

env->set_buffer_constructor_function(bv);

Local<Value> proto_v = bv->Get(env->prototype_string());

CHECK(proto_v->IsObject());

Local<Object> proto = proto_v.As<Object>();

env->SetMethod(proto, "asciiSlice", AsciiSlice);

env->SetMethod(proto, "base64Slice", Base64Slice);

env->SetMethod(proto, "binarySlice", BinarySlice);

env->SetMethod(proto, "hexSlice", HexSlice);

env->SetMethod(proto, "ucs2Slice", Ucs2Slice);

env->SetMethod(proto, "utf8Slice", Utf8Slice);

env->SetMethod(proto, "asciiWrite", AsciiWrite);

env->SetMethod(proto, "base64Write", Base64Write);

env->SetMethod(proto, "binaryWrite", BinaryWrite);

env->SetMethod(proto, "hexWrite", HexWrite);

env->SetMethod(proto, "ucs2Write", Ucs2Write);

env->SetMethod(proto, "utf8Write", Utf8Write);

env->SetMethod(proto, "copy", Copy);

// for backwards compatibility

proto->ForceSet(env->offset_string(),

Uint32::New(env->isolate(), 0),

v8::ReadOnly);

}

void Initialize(Handle<Object> target,

Handle<Value> unused,

Handle<Context> context) {

Environment* env = Environment::GetCurrent(context);

env->SetMethod(target, "setupBufferJS", SetupBufferJS);

env->SetMethod(target, "byteLength", ByteLength);

env->SetMethod(target, "compare", Compare);

env->SetMethod(target, "fill", Fill);

env->SetMethod(target, "indexOfBuffer", IndexOfBuffer);

env->SetMethod(target, "indexOfNumber", IndexOfNumber);

env->SetMethod(target, "indexOfString", IndexOfString);

env->SetMethod(target, "readDoubleBE", ReadDoubleBE);

env->SetMethod(target, "readDoubleLE", ReadDoubleLE);

env->SetMethod(target, "readFloatBE", ReadFloatBE);

env->SetMethod(target, "readFloatLE", ReadFloatLE);

env->SetMethod(target, "writeDoubleBE", WriteDoubleBE);

env->SetMethod(target, "writeDoubleLE", WriteDoubleLE);

env->SetMethod(target, "writeFloatBE", WriteFloatBE);

env->SetMethod(target, "writeFloatLE", WriteFloatLE);

}

} // namespace Buffer

} // namespace node

NODE_MODULE_CONTEXT_AWARE_BUILTIN(buffer, node::Buffer::Initialize)

node/src/node_buffer.cc at v1.8.0-commit · afshing/node · GitHub

Expand file tree

Breadcrumbs

node_buffer.cc

Latest commit

History

Breadcrumbs

node_buffer.cc

File metadata and controls