ls_unix.go

//go:build !windows

package main

import (
	"fmt"
	"io"
	"io/fs"
	"os/user"
	"strconv"
	"syscall"
)

func lsLongList(w io.Writer, fi fs.FileInfo, human bool) error {
	st, ok := fi.Sys().(*syscall.Stat_t)
	if !ok {
		return fmt.Errorf("type assertion to syscall.Stat_t failed")
	}
	u, err := user.LookupId(strconv.FormatUint(uint64(st.Uid), 10))
	if err != nil {
		return err
	}
	g, err := user.LookupGroupId(strconv.FormatUint(uint64(st.Gid), 10))
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "%s\t%s\t%s", fi.Mode(), u.Username, g.Name)
	if human {
		fmt.Fprintf(w, "\t%s", HRSize(fi.Size()))
	} else {
		fmt.Fprintf(w, "\t%d", fi.Size())
	}
	fmt.Fprintf(w, "\t%s\t%d\t%02d:%02d\t%s\n",
		fi.ModTime().Month().String()[:3],
		fi.ModTime().Day(),
		fi.ModTime().Hour(),
		fi.ModTime().Minute(),
		fi.Name(),
	)
	return nil
}