我有一个原生的NodeJS插件,它接受Buffer
个实例作为其中一个参数。
我可以使用以下代码将char
数组转换为Buffer
,但要寻找相反的方法。
static v8::Local<v8::Object> create_buffer(char *data, unsigned long length) {
node::Buffer *slow_buffer = node::Buffer::New(length);
memcpy(node::Buffer::Data(slow_buffer), data, length);
v8::Handle<v8::Value> constructor_arguments[3] = {
slow_buffer->handle_,
v8::Integer::New(length),
v8::Integer::New(0)
};
v8::Local<v8::Object> global_object = v8::Context::GetCurrent()->Global();
v8::Local<v8::Function> buffer_constructor = v8::Local<v8::Function>::Cast(global_object->Get(v8::String::New("Buffer")));
return buffer_constructor->NewInstance(3, constructor_arguments);
}
答案 0 :(得分:5)
也许我迟到了,但下面的代码应该有效:
#include <node.h>
#include <node_buffer.h>
void Test(const FunctionCallbackInfo<Value>& args)
{
Local<Object> bufferObj = args[0]->ToObject();
char* bufferData = node::Buffer::Data(bufferObj);
size_t bufferLength = node::Buffer::Length(bufferObj);
}
参考: