quote: Simple implementation added.

goblin.go

@@ -15,6 +15,7 @@ import(
 	"github.com/k1574/goblin/yes"
 	"github.com/k1574/goblin/date"
 	"github.com/k1574/goblin/uniq"
+	"github.com/k1574/goblin/quote"
 )
 
 func main() {
@@ -36,6 +37,7 @@ func main() {
 		"yes" : yes.Run,
 		"date" : date.Run,
 		"uniq" : uniq.Run,
+		"quote" : quote.Run,
 	}
 
 	if binBase := path.Base(os.Args[0]) ; binBase != "goblin" {

quote/quote.go

@@ -0,0 +1,51 @@
+package quote
+/* Quote quotes string if it contains white space character. */
+
+import(
+	"os"
+	"io"
+	"flag"
+	"fmt"
+	"unicode"
+	"bufio"
+)
+
+func HasWhiteSpace(s string) bool {
+	for _, r := range s {
+		if(unicode.IsSpace(r)){
+			return true
+		}
+	}
+	return false
+}
+
+func Run(args []string) int {	
+	status := 0
+	arg0 := args[0]
+	args = args[1:]
+	flagSet := flag.NewFlagSet(arg0, flag.ExitOnError)
+	flagSet.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Usage of %s: %s\n", arg0, arg0)
+		flagSet.PrintDefaults()
+	}
+	flagSet.Parse(args)
+	args = flagSet.Args()
+
+	r := bufio.NewReader(os.Stdin)
+	for{
+		l, e := r.ReadString('\n')	
+		if e==io.EOF {
+			break
+		}
+		last := len(l) - 1
+		if l[last] == '\n' {
+			l = l[:last]	
+		}
+		if HasWhiteSpace(l) {
+			fmt.Printf("'%s'\n", l)
+		}else {
+			fmt.Println(l)
+		}
+	}
+	return status
+}