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tag: v0.5.3
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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); \
StdIOWrap* wrap = \
static_cast<StdIOWrap*>(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;
using v8::Undefined;
extern Persistent<Function> tcpConstructor;
extern Persistent<Function> pipeConstructor;
static Persistent<Function> constructor;
class StdIOWrap : StreamWrap {
public:
static void Initialize(Handle<Object> target) {
StreamWrap::Initialize(target);
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(New);
t->SetClassName(String::NewSymbol("StdIO"));
t->InstanceTemplate()->SetInternalFieldCount(1);
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, "listen", Listen);
constructor = Persistent<Function>::New(t->GetFunction());
target->Set(String::NewSymbol("StdIO"), 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());
uv_std_type stdHandleType = (uv_std_type)args[0]->Int32Value();
assert(stdHandleType == UV_STDIN || stdHandleType == UV_STDOUT || stdHandleType == UV_STDERR);
uv_stream_t* stdHandle = uv_std_handle(stdHandleType);
if (stdHandle) {
HandleScope scope;
StdIOWrap* wrap = new StdIOWrap(args.This());
assert(wrap);
wrap->handle_ = stdHandle;
wrap->SetHandle((uv_handle_t*)stdHandle);
wrap->UpdateWriteQueueSize();
return scope.Close(args.This());
} else {
return Undefined();
}
}
StdIOWrap(Handle<Object> object) : StreamWrap(object, NULL) {
}
static Handle<Value> Listen(const Arguments& args) {
HandleScope scope;
UNWRAP
int backlog = args[0]->Int32Value();
int r = uv_listen(wrap->handle_, SOMAXCONN, 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_stream_t* handle, int status) {
HandleScope scope;
Local<Object> client_obj;
StdIOWrap* wrap = static_cast<StdIOWrap*>(handle->data);
assert(wrap->handle_ == 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.
switch (handle->type) {
case UV_TCP:
client_obj = tcpConstructor->NewInstance();
break;
case UV_NAMED_PIPE:
client_obj = pipeConstructor->NewInstance();
break;
default:
assert(0);
return;
}
// Unwrap the client javascript object.
assert(client_obj->InternalFieldCount() > 0);
StreamWrap* client_wrap =
static_cast<StreamWrap*>(client_obj->GetPointerFromInternalField(0));
int r = uv_accept(handle, client_wrap->GetStream());
// 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);
}
uv_stream_t* handle_;
};
} // namespace node
NODE_MODULE(node_stdio_wrap, node::StdIOWrap::Initialize);
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