// Standard Library Common IO and FS Abstractions
pub use std::env;
pub use std::ffi::{CStr, CString};
pub use std::fmt;
pub use std::fs::{self, File, OpenOptions};
pub use std::io::{
  self, BufRead, BufReader, BufWriter, Error, ErrorKind, Read, Seek, SeekFrom, Write,
};
pub use std::mem;
pub use std::path::{Path, PathBuf};
pub use std::process::exit;
pub use std::sync::Arc;
pub use std::time::Instant;

// Unix-specific IO abstractions
pub use std::os::unix::io::{AsRawFd, BorrowedFd, FromRawFd, IntoRawFd, OwnedFd, RawFd};

// Nix crate for POSIX APIs
pub use bitflags::bitflags;
pub use nix::{
  errno::Errno,
  fcntl::{open, OFlag},
  libc::{self, STDERR_FILENO, STDIN_FILENO, STDOUT_FILENO},
  sys::{
    signal::{self, kill, killpg, pthread_sigmask, signal, SigHandler, SigSet, SigmaskHow, Signal},
    stat::Mode,
    termios::{self},
    wait::{waitpid, WaitPidFlag as WtFlag, WaitStatus as WtStat},
  },
  unistd::{
    close, dup, dup2, execvpe, fork, getpgid, getpgrp, isatty, pipe, read, setpgid, tcgetpgrp,
    tcsetpgrp, write, ForkResult, Pid,
  },
};

pub use crate::flog;
pub use crate::libsh::flog::FernLogLevel::*;

// Additional utilities, if needed, can be added here