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#include "FileDescriptor.hpp"
#include <cstdlib>
#include <fcntl.h>
#include <sys/poll.h>
#include <unistd.h>
#include <utility>
using namespace Hyprutils::OS;
CFileDescriptor::CFileDescriptor(int const fd)
: m_fd(fd) {}
CFileDescriptor::CFileDescriptor(CFileDescriptor &&other) noexcept
: m_fd(std::exchange(other.m_fd, -1)) {}
CFileDescriptor &CFileDescriptor::operator=(CFileDescriptor &&other) noexcept {
if (this == &other) // Shit will go haywire if there is duplicate ownership
abort();
reset();
m_fd = std::exchange(other.m_fd, -1);
return *this;
}
CFileDescriptor::~CFileDescriptor() {
reset();
}
bool CFileDescriptor::isValid() const {
return m_fd != -1;
}
int CFileDescriptor::get() const {
return m_fd;
}
int CFileDescriptor::getFlags() const {
return fcntl(m_fd, F_GETFD);
}
bool CFileDescriptor::setFlags(int flags) {
return fcntl(m_fd, F_SETFD, flags) != -1;
}
int CFileDescriptor::take() {
return std::exchange(m_fd, -1);
}
void CFileDescriptor::reset() {
if (m_fd != -1) {
close(m_fd);
m_fd = -1;
}
}
CFileDescriptor CFileDescriptor::duplicate(int flags) const {
if (m_fd == -1)
return {};
return CFileDescriptor{fcntl(m_fd, flags, 0)};
}
bool CFileDescriptor::isClosed() const {
return isClosed(m_fd);
}
bool CFileDescriptor::isReadable() const {
return isReadable(m_fd);
}
bool CFileDescriptor::isClosed(int fd) {
pollfd pfd = {
.fd = fd,
.events = POLLIN,
.revents = 0,
};
if (poll(&pfd, 1, 0) < 0)
return true;
return pfd.revents & (POLLHUP | POLLERR);
}
bool CFileDescriptor::isReadable(int fd) {
pollfd pfd = {.fd = fd, .events = POLLIN, .revents = 0};
return poll(&pfd, 1, 0) > 0 && (pfd.revents & POLLIN);
}
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