bb/tool/yes/yes.go

57 lines
849 B
Go

/* Yes program implementation. */
package yes
import(
"os"
"fmt"
"strings"
"github.com/omnipunk/tk/input"
"github.com/omnipunk/cli/mtool"
)
var(
nArg int
)
func yes(s string){
if nArg<0{
for{
fmt.Print(s)
}
} else {
for i:=0 ; i<nArg ; i+=1 {
fmt.Print(s)
}
}
}
func Run(flagSet *mtool.Flags) {
var(
stdinFlag bool
nFlag bool
s string
)
flagSet.BoolVar(&stdinFlag, "s", false, "Read string from stdin.")
flagSet.BoolVar(&nFlag, "n", false, "Do not add net line character.")
flagSet.IntVar(&nArg, "N", -1, "Repeat input N times. Negative value means infinite cycle.")
flagSet.Parse()
args := flagSet.Args()
if stdinFlag {
in, _ := input.ReadAllRaw(os.Stdin)
s = string(in)
} else {
if len(args)>0 {
s = strings.Join(args, " ")
} else {
s = "y"
}
}
if !nFlag {
s += "\n"
}
yes(s)
}