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tag: v0.5.2
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#include <node.h>
#include <node_buffer.h>
#include <req_wrap.h>
#include <handle_wrap.h>
#include <stream_wrap.h>
#define UNWRAP \
assert(!args.Holder().IsEmpty()); \
assert(args.Holder()->InternalFieldCount() > 0); \
PipeWrap* wrap = \
static_cast<PipeWrap*>(args.Holder()->GetPointerFromInternalField(0)); \
if (!wrap) { \
SetErrno(UV_EBADF); \
return scope.Close(Integer::New(-1)); \
}
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;
static Persistent<Function> constructor;
// TODO share with TCPWrap?
typedef class ReqWrap<uv_connect_t> ConnectWrap;
class PipeWrap : StreamWrap {
public:
static void Initialize(Handle<Object> target) {
StreamWrap::Initialize(target);
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(New);
t->SetClassName(String::NewSymbol("Pipe"));
t->InstanceTemplate()->SetInternalFieldCount(1);
NODE_SET_PROTOTYPE_METHOD(t, "close", HandleWrap::Close);
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, "shutdown", StreamWrap::Shutdown);
NODE_SET_PROTOTYPE_METHOD(t, "bind", Bind);
NODE_SET_PROTOTYPE_METHOD(t, "listen", Listen);
NODE_SET_PROTOTYPE_METHOD(t, "connect", Connect);
constructor = Persistent<Function>::New(t->GetFunction());
target->Set(String::NewSymbol("Pipe"), constructor);
}
private:
static Handle<Value> New(const Arguments& args) {
// 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());
HandleScope scope;
PipeWrap* wrap = new PipeWrap(args.This());
assert(wrap);
return scope.Close(args.This());
}
PipeWrap(Handle<Object> object) : StreamWrap(object,
(uv_stream_t*) &handle_) {
int r = uv_pipe_init(&handle_);
assert(r == 0); // How do we proxy this error up to javascript?
// Suggestion: uv_pipe_init() returns void.
handle_.data = reinterpret_cast<void*>(this);
UpdateWriteQueueSize();
}
static Handle<Value> Bind(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue name(args[0]->ToString());
int r = uv_pipe_bind(&wrap->handle_, *name);
// Error starting the pipe.
if (r) SetErrno(uv_last_error().code);
return scope.Close(Integer::New(r));
}
static Handle<Value> Listen(const Arguments& args) {
HandleScope scope;
UNWRAP
int backlog = args[0]->Int32Value();
int r = uv_pipe_listen(&wrap->handle_, OnConnection);
// Error starting the pipe.
if (r) SetErrno(uv_last_error().code);
return scope.Close(Integer::New(r));
}
// TODO maybe share with TCPWrap?
static void OnConnection(uv_handle_t* handle, int status) {
HandleScope scope;
PipeWrap* wrap = static_cast<PipeWrap*>(handle->data);
assert(&wrap->handle_ == (uv_pipe_t*)handle);
// We should not be getting this callback if someone as already called
// uv_close() on the handle.
assert(wrap->object_.IsEmpty() == false);
if (status != 0) {
// TODO Handle server error (set errno and call onconnection with NULL)
assert(0);
return;
}
// Instanciate the client javascript object and handle.
Local<Object> client_obj = constructor->NewInstance();
// Unwrap the client javascript object.
assert(client_obj->InternalFieldCount() > 0);
PipeWrap* client_wrap =
static_cast<PipeWrap*>(client_obj->GetPointerFromInternalField(0));
int r = uv_accept(handle, (uv_stream_t*)&client_wrap->handle_);
// uv_accept should always work.
assert(r == 0);
// Successful accept. Call the onconnection callback in JavaScript land.
Local<Value> argv[1] = { client_obj };
MakeCallback(wrap->object_, "onconnection", 1, argv);
}
// TODO Maybe share this with TCPWrap?
static void AfterConnect(uv_connect_t* req, int status) {
ConnectWrap* req_wrap = (ConnectWrap*) req->data;
PipeWrap* wrap = (PipeWrap*) req->handle->data;
HandleScope scope;
// The wrap and request objects should still be there.
assert(req_wrap->object_.IsEmpty() == false);
assert(wrap->object_.IsEmpty() == false);
if (status) {
SetErrno(uv_last_error().code);
}
Local<Value> argv[3] = {
Integer::New(status),
Local<Value>::New(wrap->object_),
Local<Value>::New(req_wrap->object_)
};
MakeCallback(req_wrap->object_, "oncomplete", 3, argv);
delete req_wrap;
}
static Handle<Value> Connect(const Arguments& args) {
HandleScope scope;
UNWRAP
String::AsciiValue name(args[0]->ToString());
ConnectWrap* req_wrap = new ConnectWrap();
int r = uv_pipe_connect(&req_wrap->req_,
&wrap->handle_,
*name,
AfterConnect);
req_wrap->Dispatched();
if (r) {
SetErrno(uv_last_error().code);
delete req_wrap;
return scope.Close(v8::Null());
} else {
return scope.Close(req_wrap->object_);
}
}
uv_pipe_t handle_;
};
} // namespace node
NODE_MODULE(node_pipe_wrap, node::PipeWrap::Initialize);
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