node/src/tty_wrap.cc at master · DavyLin/node · GitHub

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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 "req_wrap.h"

#include "handle_wrap.h"

#include "stream_wrap.h"

namespace node {

using v8::Object;

using v8::Handle;

using v8::Local;

using v8::Persistent;

using v8::Value;

using v8::HandleScope;

using v8::FunctionTemplate;

using v8::String;

using v8::Function;

using v8::TryCatch;

using v8::Context;

using v8::Arguments;

using v8::Integer;

using v8::Undefined;

#define UNWRAP \

assert(!args.Holder().IsEmpty()); \

assert(args.Holder()->InternalFieldCount() > 0); \

TTYWrap* wrap = \

static_cast<TTYWrap*>(args.Holder()->GetPointerFromInternalField(0)); \

if (!wrap) { \

uv_err_t err; \

err.code = UV_EBADF; \

SetErrno(err); \

return scope.Close(Integer::New(-1)); \

}

class TTYWrap : StreamWrap {

public:

static void Initialize(Handle<Object> target) {

StreamWrap::Initialize(target);

HandleScope scope;

Local<FunctionTemplate> t = FunctionTemplate::New(New);

t->SetClassName(String::NewSymbol("TTY"));

t->InstanceTemplate()->SetInternalFieldCount(1);

NODE_SET_PROTOTYPE_METHOD(t, "close", HandleWrap::Close);

NODE_SET_PROTOTYPE_METHOD(t, "unref", HandleWrap::Unref);

NODE_SET_PROTOTYPE_METHOD(t, "ref", HandleWrap::Ref);

NODE_SET_PROTOTYPE_METHOD(t, "readStart", StreamWrap::ReadStart);

NODE_SET_PROTOTYPE_METHOD(t, "readStop", StreamWrap::ReadStop);

NODE_SET_PROTOTYPE_METHOD(t, "write", StreamWrap::Write);

NODE_SET_PROTOTYPE_METHOD(t, "getWindowSize", TTYWrap::GetWindowSize);

NODE_SET_PROTOTYPE_METHOD(t, "setRawMode", SetRawMode);

NODE_SET_METHOD(target, "isTTY", IsTTY);

NODE_SET_METHOD(target, "guessHandleType", GuessHandleType);

target->Set(String::NewSymbol("TTY"), t->GetFunction());

}

private:

static Handle<Value> GuessHandleType(const Arguments& args) {

HandleScope scope;

int fd = args[0]->Int32Value();

assert(fd >= 0);

uv_handle_type t = uv_guess_handle(fd);

switch (t) {

case UV_TTY:

return scope.Close(String::New("TTY"));

case UV_NAMED_PIPE:

return scope.Close(String::New("PIPE"));

case UV_FILE:

return scope.Close(String::New("FILE"));

default:

assert(0);

return v8::Undefined();

}

static Handle<Value> IsTTY(const Arguments& args) {

HandleScope scope;

int fd = args[0]->Int32Value();

assert(fd >= 0);

return uv_guess_handle(fd) == UV_TTY ? v8::True() : v8::False();

}

static Handle<Value> GetWindowSize(const Arguments& args) {

HandleScope scope;

UNWRAP

int width, height;

int r = uv_tty_get_winsize(&wrap->handle_, &width, &height);

if (r) {

SetErrno(uv_last_error(uv_default_loop()));

return v8::Undefined();

}

Local<v8::Array> a = v8::Array::New(2);

a->Set(0, Integer::New(width));

a->Set(1, Integer::New(height));

return scope.Close(a);

}

static Handle<Value> SetRawMode(const Arguments& args) {

HandleScope scope;

UNWRAP

int r = uv_tty_set_mode(&wrap->handle_, args[0]->IsTrue());

if (r) {

SetErrno(uv_last_error(uv_default_loop()));

}

return scope.Close(Integer::New(r));

}

static Handle<Value> New(const Arguments& args) {

HandleScope scope;

// This constructor should not be exposed to public javascript.

// Therefore we assert that we are not trying to call this as a

// normal function.

assert(args.IsConstructCall());

int fd = args[0]->Int32Value();

assert(fd >= 0);

TTYWrap* wrap = new TTYWrap(args.This(), fd, args[1]->IsTrue());

assert(wrap);

wrap->UpdateWriteQueueSize();

return scope.Close(args.This());

}

TTYWrap(Handle<Object> object, int fd, bool readable)

: StreamWrap(object, (uv_stream_t*)&handle_) {

uv_tty_init(uv_default_loop(), &handle_, fd, readable);

}

uv_tty_t handle_;

};

} // namespace node

NODE_MODULE(node_tty_wrap, node::TTYWrap::Initialize)

node/src/tty_wrap.cc at master · DavyLin/node · GitHub

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