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tag: v0.5.9
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#include <node.h>
#include <handle_wrap.h>
#include <stdlib.h>
using namespace v8;
namespace node {
#define UNWRAP \
assert(!args.Holder().IsEmpty()); \
assert(args.Holder()->InternalFieldCount() > 0); \
FSEventWrap* wrap = \
static_cast<FSEventWrap*>(args.Holder()->GetPointerFromInternalField(0)); \
if (!wrap) { \
SetErrno(UV_EBADF); \
return scope.Close(Integer::New(-1)); \
}
class FSEventWrap: public HandleWrap {
public:
static void Initialize(Handle<Object> target);
static Handle<Value> New(const Arguments& args);
static Handle<Value> Start(const Arguments& args);
private:
FSEventWrap(Handle<Object> object);
virtual ~FSEventWrap();
static void OnEvent(uv_fs_event_t* handle, const char* filename, int events,
int status);
uv_fs_event_t handle_;
};
FSEventWrap::FSEventWrap(Handle<Object> object): HandleWrap(object,
(uv_handle_t*)&handle_) {
handle_.data = reinterpret_cast<void*>(this);
}
FSEventWrap::~FSEventWrap() {
}
void FSEventWrap::Initialize(Handle<Object> target) {
HandleWrap::Initialize(target);
HandleScope scope;
Local<FunctionTemplate> t = FunctionTemplate::New(New);
t->InstanceTemplate()->SetInternalFieldCount(1);
t->SetClassName(String::NewSymbol("FSEvent"));
NODE_SET_PROTOTYPE_METHOD(t, "start", Start);
NODE_SET_PROTOTYPE_METHOD(t, "close", Close);
target->Set(String::NewSymbol("FSEvent"),
Persistent<FunctionTemplate>::New(t)->GetFunction());
}
Handle<Value> FSEventWrap::New(const Arguments& args) {
HandleScope scope;
assert(args.IsConstructCall());
new FSEventWrap(args.This());
return scope.Close(args.This());
}
Handle<Value> FSEventWrap::Start(const Arguments& args) {
HandleScope scope;
UNWRAP
if (args.Length() < 1 || !args[0]->IsString()) {
return ThrowException(Exception::TypeError(String::New("Bad arguments")));
}
String::Utf8Value path(args[0]->ToString());
int r = uv_fs_event_init(uv_default_loop(), &wrap->handle_, *path, OnEvent);
if (r == 0) {
// Check for persistent argument
if (!args[1]->IsTrue()) {
uv_unref(uv_default_loop());
}
} else {
SetErrno(uv_last_error(uv_default_loop()).code);
}
return scope.Close(Integer::New(r));
}
void FSEventWrap::OnEvent(uv_fs_event_t* handle, const char* filename,
int events, int status) {
HandleScope scope;
Local<String> eventStr;
FSEventWrap* wrap = reinterpret_cast<FSEventWrap*>(handle->data);
assert(wrap->object_.IsEmpty() == false);
if (status) {
SetErrno(uv_last_error(uv_default_loop()).code);
eventStr = String::Empty();
} else {
switch (events) {
case UV_RENAME:
eventStr = String::New("rename");
break;
case UV_CHANGE:
eventStr = String::New("change");
break;
}
}
Local<Value> argv[3] = {
Integer::New(status),
eventStr,
filename ? (Local<Value>)String::New(filename) : Local<Value>::New(v8::Null())
};
MakeCallback(wrap->object_, "onchange", 3, argv);
}
} // namespace node
NODE_MODULE(node_fs_event_wrap, node::FSEventWrap::Initialize);
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