util/util.go

72 lines
1.4 KiB
Go

package goutil
import (
"errors"
"io"
"math"
"os"
"regexp"
"time"
"github.com/hako/durafmt"
)
func FilterToAlnum(input string) string {
re := regexp.MustCompile("[^a-zA-Z0-9]+")
return re.ReplaceAllString(input, "")
}
func TimeDiffHuman(first time.Time, second time.Time) string {
if first.Before(second) {
return durafmt.ParseShort(second.Sub(first)).String()
} else {
return durafmt.ParseShort(first.Sub(second)).String()
}
}
// Does anyone else use uints for things that are always >=0 like counts and
func TimeDiffAbsSeconds(first time.Time, second time.Time) uint {
return uint(math.Abs(first.Sub(second).Truncate(time.Second).Seconds()))
}
func Mkdirp(p string) error {
src, err := os.Stat(p)
if os.IsNotExist(err) {
errDir := os.MkdirAll(p, 0755)
if errDir != nil {
return err
}
return nil
}
if src.Mode().IsRegular() {
return errors.New("file already exists at path")
}
return nil
}
// straight outta stackoverflow
// https://stackoverflow.com/questions/21060945/simple-way-to-copy-a-file-in-golang
func CopyFile(src, dst string) (err error) {
in, err := os.Open(src)
if err != nil {
return
}
defer in.Close()
out, err := os.Create(dst)
if err != nil {
return
}
defer func() {
cerr := out.Close()
if err == nil {
err = cerr
}
}()
if _, err = io.Copy(out, in); err != nil {
return
}
err = out.Sync()
return
}