read: basic implementation.

m/cmd/goblin/main.go

@@ -19,6 +19,7 @@ import(
 	"github.com/k1574/goblin/m/sep/mergelbl"
 	"github.com/k1574/goblin/m/sep/basename"
 	"github.com/k1574/goblin/m/sep/ec"
+	"github.com/k1574/goblin/m/sep/read"
 )
 
 func main() {
@@ -40,6 +41,7 @@ func main() {
 		"noext" : noext.Run,
 		"mergelbl" : mergelbl.Run,
 		"ec" : ec.Run,
+		"read" : read.Run,
 	}
 
 	multitool.Main("goblin", tools)

m/sep/read/main.go

@@ -0,0 +1,40 @@
+package read
+/* Plan9 read or something to read into variables. */
+import(
+	"os"
+	"bufio"
+	"flag"
+	"fmt"
+)
+
+var(
+	nLines int
+)
+
+func Run(args []string) {	
+	arg0 := args[0]
+	args = args[1:]
+	flagSet := flag.NewFlagSet(arg0, flag.ExitOnError)
+	flagSet.IntVar(&nLines, "n", 1, "amount of lines")
+	flagSet.Usage = func() {
+		fmt.Fprintf(os.Stderr, "usage: %s [options] [files]\n", arg0)
+		flagSet.PrintDefaults()
+		os.Exit(1)
+	}
+	flagSet.Parse(args)
+	args = flagSet.Args()
+
+	if nLines <= 0 {
+		flagSet.Usage()
+	}
+
+	rd := bufio.NewReader(os.Stdin)
+	for nLines != 0 {
+		line, err := rd.ReadString('\n')
+		if err != nil {
+			os.Exit(0)
+		}
+		fmt.Print(line)
+		nLines -= 1
+	}
+}