mergelbl: init.

go.sum

@@ -1,2 +0,0 @@
-github.com/jienfak/goblin v0.0.0-20200524232316-580d70cbe1ba h1:wCB3lb+yf83W65Ol1l17vSmWSrGuCW38JY4Z3XH+Pv8=
-github.com/jienfak/goblin v0.0.0-20200524232316-580d70cbe1ba/go.mod h1:u1tkXwykxJiJntXSR8Cd96cVL6jJeaPjva3tnG8e5aw=

main.go

@@ -18,6 +18,7 @@ import(
 	"goblin/quote"
 	"goblin/urlprs"
 	"goblin/noext"
+	"goblin/mergelbl"
 )
 
 func main() {
@@ -42,6 +43,7 @@ func main() {
 		"quote" : quote.Run,
 		"urlprs" : urlprs.Run,
 		"noext" : noext.Run,
+		"mergelbl" : mergelbl.Run,
 	}
 
 	if binBase := path.Base(os.Args[0]) ; binBase != "goblin" {

mergelbl/main.go

@@ -0,0 +1,57 @@
+package mergelbl
+
+import(
+	"os"
+	"fmt"
+	"bufio"
+	"flag"
+	"log"
+)
+
+func
+Run(args []string) int {
+	var(
+		e error
+		buf string
+	)
+	rsep := '\n'
+	wsep := "\n"
+	//del := ""
+	status := 0
+	arg0 := args[0]
+	args = args[1:]
+	flagSet := flag.NewFlagSet(arg0, flag.ExitOnError)
+	flagSet.Usage = func() {
+		fmt.Fprintf(os.Stderr, "usage: %s <file1> <file2> .. [fileN]\n", arg0)
+		flagSet.PrintDefaults()
+	}
+	flagSet.Parse(args)
+	args = flagSet.Args()
+
+	files := make([]*os.File, len(args))
+	for i, v := range args {
+		files[i], e = os.Open(v)
+		if e!=nil {
+			log.Fatal(e)
+		}
+	}
+
+	rds := make([]*bufio.Reader, len(files))
+	for i, v := range files {
+		rds[i] = bufio.NewReader(v)
+	}
+
+	for{
+		s := ""
+		for _, r := range rds{
+			buf, e = r.ReadString(byte(rsep))
+			if e!=nil {
+				return 0
+			}
+			s += buf[:len(buf)-1]
+		}
+		fmt.Printf("%s%s", s, wsep)
+	}
+	return status
+}
+