noext: init.

goblin.go

@@ -17,6 +17,7 @@ import(
 	"github.com/k1574/goblin/uniq"
 	"github.com/k1574/goblin/quote"
 	"github.com/k1574/goblin/urlprs"
+	"github.com/k1574/goblin/noext"
 )
 
 func main() {
@@ -40,6 +41,7 @@ func main() {
 		"uniq" : uniq.Run,
 		"quote" : quote.Run,
 		"urlprs" : urlprs.Run,
+		"noext" : noext.Run,
 	}
 
 	if binBase := path.Base(os.Args[0]) ; binBase != "goblin" {

noext/noext.go

@@ -0,0 +1,41 @@
+package noext
+/* Print file path without extension. */
+
+import(
+	"fmt"
+	"flag"
+	"os"
+)
+
+var(
+	arg0 string
+	args []string
+	dot = '.'
+	slash =  '.'
+)
+
+func NoExt(p string) string {
+	l := len(p)-1
+	i := l
+	for ; rune(p[i])!=dot ; i -= 1 {
+		if rune(p[i]) == slash || i==0 {
+			return p
+		}
+	}
+	return p[:i]
+}
+
+func Run(argv []string) int {
+	status := 0
+	arg0 = argv[0]
+	args = argv[1:]
+	flagSet := flag.NewFlagSet(arg0, flag.ExitOnError)
+	flagSet.Usage = func() {
+		fmt.Fprintf(os.Stderr, "usage: %s [files]\n", arg0, arg0)
+		flagSet.PrintDefaults()
+	}
+	flagSet.Parse(args)
+	args = flagSet.Args()
+	fmt.Printf("%s", NoExt(args[0]))
+	return status
+}