"echo:Simplified."

echo/echo.go

@@ -2,74 +2,20 @@
 package echo
 
 import (
-	"os"
+	"fmt"
 	"flag"
-	"strings"
 )
 
-type Echoer struct {
-	out *os.File
-	backslashMap map[string] string
-}
-func (e Echoer)BackslashInterpret(str string) string {
-	for k, v := range e.backslashMap {
-		str  = strings.ReplaceAll(str, k, v)
-	}
-	return str
-}
-
-func (e Echoer)Echo(str string) {
-	e.out.Write( []byte(str[:len(str)]) )
-}
-
-func New(out *os.File, backslashMap map[string] string) *Echoer {
-	e := new(Echoer)
-	e.out = out
-	e.backslashMap = backslashMap
-	return e
-}
 func Run(args []string) int {
-	var(
-		newLineStr string
-		newLineFlag bool
-		joinStr string
-		joinStrsFlag bool
-		backslashSeqFlag bool
-	)
-	seqs := map[string] string {
-		"\\\\" : "\\",
-		"\\a" : "\a",
-		"\\b" : "\b",
-		/*"\\c" : "\c",
-		"\\e" : "\e",*/
-		"\\f" : "\f",
-		"\\n" : "\n",
-		"\\r" : "\r",
-		"\\t" : "\t",
-		"\\v" : "\v",
-	}
-	e := New(os.Stdout, seqs)
 	flagSet := flag.NewFlagSet(args[0], flag.ExitOnError)
-	flagSet.BoolVar(&newLineFlag, "n", false,
-	                            "Don't add new line character('-N' is lower priority).")
-	flagSet.StringVar(&newLineStr, "N", "\n", "Use this instead new line character.") 
-	flagSet.BoolVar(&joinStrsFlag, "j", false, "Join strings('-J' is lower priority).")
-	flagSet.StringVar(&joinStr, "J", " ", "Use instead of space as separator.") 
-	flagSet.BoolVar(&backslashSeqFlag, "e", false, "Interpret backslash special terminal characters(Characters from join options will be interpreted too).")
 	flagSet.Parse(args[1:])
-
-	if newLineFlag {
-		newLineStr = ""	
+	args = args[1:]
+	status := 0
+	l := len(args) - 1
+	for i, s := range args {
+		fmt.Print(s)
+		if i!=l { fmt.Print(" ") }
 	}
-	if joinStrsFlag {
-		joinStr = ""
-	}
-
-	printStr := strings.Join(flagSet.Args(), joinStr) +newLineStr
-	if backslashSeqFlag {
-		printStr = e.BackslashInterpret(printStr)
-	}
-
-	e.Echo(printStr)
-	return 0
+	fmt.Print("\n")
+	return status
 }