descriptor.h

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#ifndef LIPH_IO_DESCRIPTOR_H_
#define LIPH_IO_DESCRIPTOR_H_
 
#include <unistd.h>
 
namespace liph::io {
 
enum class descriptor_type { none, regular, socket };
 
class descriptor {
public:
    static constexpr int invalid = -1;
 
public:
    descriptor(int fd = invalid, descriptor_type type = descriptor_type::none) : fd_(fd), type_(type) {}
 
    virtual ~descriptor() {
        if (operator bool()) ::close(fd_);
    }
 
    int fd() const { return fd_; }
 
    descriptor_type type() const { return type_; }
 
    operator bool() const { return fd_ != invalid; };
 
    ssize_t read(void *buf, size_t nbytes) { return ::read(fd_, buf, nbytes); }
 
    ssize_t write(const void *buf, size_t nbytes) { return ::write(fd_, buf, nbytes); }
 
protected:
    int fd_;
    descriptor_type type_;
};
 
}  // namespace liph::io
 
#endif  // LIPH_IO_DESCRIPTOR_H_