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basename.go
39 lines (35 loc) · 849 Bytes
/
basename.go
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package main
import (
"flag"
"fmt"
"os"
"path/filepath"
"strings"
)
func (app *applets) Applet_basename(args []string) {
var set = flag.NewFlagSet(args[0], flag.ExitOnError)
var aflag = set.Bool("a", false, "support multiple arguments and treat each as a NAME")
var sflag = set.String("s", "", "remove a trailing SUFFIX")
var zflag = set.Bool("z", false, "separate output with NUL rather than newline")
set.Parse(args[1:])
args = set.Args()
output := func(s string) {
base := filepath.Base(s)
base = strings.TrimSuffix(base, *sflag)
if !*zflag {
fmt.Println(base)
} else {
fmt.Print(base)
}
}
if !*aflag && len(args) == 2 {
*sflag = args[len(args)-1]
args = args[:len(args)-1]
} else if len(args) == 0 || (!*aflag && len(args) > 2) {
set.Usage()
os.Exit(1)
}
for i := range args {
output(args[i])
}
}