16 changed files with 195 additions and 381 deletions
--- a/.gitignore
+++ b/.gitignore
@ -2,4 +2,3 @@
 .idea
 dist/
 /go.sum
-/view/*
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@ -23,15 +23,6 @@ builds:
      - linux
      - windows
      - darwin
-    ldflags:
-      - -s -w
-
-upx:
-  - enabled: true
-    goos:
-      - windows
-    goarch:
-      - amd64

 archives:
  - format: tar.gz
--- a/.idea/.gitignore
+++ b/.idea/.gitignore
@ -0,0 +1,8 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
--- a/README.md
+++ b/README.md
@ -11,11 +11,11 @@
 * [x] 活动端口探测
 * [x] 数据日志保存
 * [x] Hex断帧设置
-* [x] UDP数据转发(支持多服)
-* [x] TCP数据转发(支持多服)
+* [x] UDP数据转发
+* [x] TCP数据转发
 * [x] 参数交互配置
 * [x] Ctrl组合键
-* [x] 文件接收发送(trzsz lrzsz都支持)
+* [ ] 文件接收发送

 ## 运行示例

@ -42,13 +42,3 @@
 7. Ctrl组合键发送指令.ctrl `.ctrl c`
   
   ![img7.png](image/img7.png)
-8. 文件上传演示 `index.html`
-   ![img8.png](image/img8.png)
-   内容对比
-   ![img11.png](image/img11.png)
-9. 时间戳 `./COM -p COM8 -t`
-   ![img9.png](image/img9.png)
-10. 格式修改 `./COM -p COM11 -t='<2006-01-02 15:04:05>'`
-    ![img10.png](image/img10.png)
-11. 多服同步转发 `./COM -p COM11 -f 1 -a 127.0.0.1:23456 -f 1 -a 127.0.0.1:23457`
-   ![img12.png](image/img12.png)
--- a/command.go
+++ b/command.go
@ -14,10 +14,7 @@ type Command struct {
 	function    func()
 }

-var (
-	commands []Command
-	args     []string
-)
+var commands []Command

 func cmdhelp() {
 	var page = 0
@ -27,8 +24,6 @@ func cmdhelp() {
 	}
 }
 func cmdexit() {
-	CloseTrzsz()
-	CloseSerial()
 	os.Exit(0)
 }
 func cmdargs() {
@ -36,11 +31,12 @@ func cmdargs() {
 	strout(out, config.outputCode, fmt.Sprintf("%q\n", args[1:]))
 }
 func cmdctrl() {
-	var err error
 	b := []byte(args[1])
 	x := []byte{b[0] & 0x1f}
 	_, err = serialPort.Write(x)
-	ErrorF(err)
+	if err != nil {
+		log.Fatal(err)
+	}
 	strout(out, config.outputCode, fmt.Sprintf("Ctrl+%s\n", b))
 }
 func cmdhex() {
--- a/config.go
+++ b/config.go
@ -1,11 +1,8 @@
 package main

 import (
-	"fmt"
 	"log"
 	"net"
-	"os"
-	"time"
 )

 type Config struct {
@ -19,11 +16,9 @@ type Config struct {
 	endStr      string
 	enableLog   bool
 	logFilePath string
-	forWard     []int
+	forWard     int
 	frameSize   int
-	timesTamp   bool
-	timesFmt    string
-	address     []string
+	address     string
 }
 type FoeWardMode int

@ -35,18 +30,17 @@ const (

 var config Config

-func setForWardClient(mode FoeWardMode, add string) (conn net.Conn) {
-	var err error
-	switch mode {
+func setForWardClient() (conn net.Conn) {
+	switch FoeWardMode(config.forWard) {
 	case NOT:

 	case TCPC:
-		conn, err = net.Dial("tcp", add)
+		conn, err = net.Dial("tcp", config.address)
 		if err != nil {
 			log.Fatal(err)
 		}
 	case UDPC:
-		conn, err = net.Dial("udp", add)
+		conn, err = net.Dial("udp", config.address)
 		if err != nil {
 			log.Fatal(err)
 		}
@ -55,14 +49,3 @@ func setForWardClient(mode FoeWardMode, add string) (conn net.Conn) {
 	}
 	return conn
 }
-
-func checkLogOpen() {
-	if config.enableLog {
-		path := fmt.Sprintf(config.logFilePath, config.portName, time.Now().Format("2006_01_02T150405"))
-		f, err := os.OpenFile(path, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0666)
-		if err != nil {
-			log.Fatal(err)
-		}
-		outs = append(outs, f)
-	}
-}
--- a/flag.go
+++ b/flag.go
@ -1,6 +1,7 @@
 package main

 import (
+	"flag"
 	"fmt"
 	"github.com/charmbracelet/bubbles/key"
 	inf "github.com/fzdwx/infinite"
@ -11,7 +12,6 @@ import (
 	"github.com/fzdwx/infinite/components/selection/singleselect"
 	"github.com/fzdwx/infinite/style"
 	"github.com/fzdwx/infinite/theme"
-	"github.com/spf13/pflag"
 	"go.bug.st/serial"
 	"log"
 	"strconv"
@ -20,13 +20,10 @@ import (

 type ptrVal struct {
 	*string
-	sl *[]string
 	*int
-	il *[]int
 	*bool
 	*float64
 	*float32
-	ext *string
 }
 type Val struct {
 	string
@ -34,7 +31,6 @@ type Val struct {
 	bool
 	float64
 	float32
-	extdef string
 }
 type Flag struct {
 	v    ptrVal
@ -52,13 +48,13 @@ var (
 	outputCode  = Flag{ptrVal{string: &config.outputCode}, "o", "out", Val{string: "UTF-8"}, "输出编码"}
 	inputCode   = Flag{ptrVal{string: &config.inputCode}, "i", "in", Val{string: "UTF-8"}, "输入编码"}
 	endStr      = Flag{ptrVal{string: &config.endStr}, "e", "end", Val{string: "\n"}, "终端换行符"}
-	logExt     = Flag{v: ptrVal{ext: &config.logFilePath}, sStr: "l", lStr: "log", dv: Val{extdef: "./%s-$s.txt", string: ""}, help: "日志保存路径"}
-	timeExt    = Flag{v: ptrVal{ext: &config.timesFmt}, sStr: "t", lStr: "time", dv: Val{extdef: "[06-01-02 15:04:05.000]", string: ""}, help: "时间戳格式化字段"}
-	forWard    = Flag{ptrVal{il: &config.forWard}, "f", "forward", Val{int: 0}, "转发模式(0: 无 1:TCP-C 2:UDP-C 支持多次传入)"}
-	address    = Flag{ptrVal{sl: &config.address}, "a", "address", Val{string: "127.0.0.1:12345"}, "转发服务地址(支持多次传入)"}
+	enableLog   = Flag{ptrVal{bool: &config.enableLog}, "l", "log", Val{bool: false}, "是否启用日志保存"}
+	logFilePath = Flag{ptrVal{string: &config.logFilePath}, "P", "Path", Val{string: "./Log.txt"}, "日志保存路径"}
+	forWard     = Flag{ptrVal{int: &config.forWard}, "f", "forward", Val{int: 0}, "转发模式(0: 无 1:TCP-C 2:UDP-C)"}
+	address     = Flag{ptrVal{string: &config.address}, "a", "address", Val{string: "127.0.0.1:12345"}, "转发服务地址"}
 	frameSize   = Flag{ptrVal{int: &config.frameSize}, "F", "Frame", Val{int: 16}, "帧大小"}
 	parityBit   = Flag{ptrVal{int: &config.parityBit}, "v", "verify", Val{int: 0}, "奇偶校验(0:无校验、1:奇校验、2:偶校验、3:1校验、4:0校验)"}
-	flags      = []Flag{portName, baudRate, dataBits, stopBits, outputCode, inputCode, endStr, forWard, address, frameSize, parityBit, logExt, timeExt}
+	flags       = []Flag{portName, baudRate, dataBits, stopBits, outputCode, inputCode, endStr, enableLog, logFilePath, forWard, address, frameSize, parityBit}
 )

 var (
@ -78,7 +74,6 @@ const (
 	stringVal
 	intVal
 	boolVal
-	extVal
 )

 func printUsage(ports []string) {
@ -98,9 +93,6 @@ func flagFindValue(v ptrVal) ValType {
 	if v.int != nil {
 		return intVal
 	}
-	if v.ext != nil {
-		return extVal
-	}
 	return notVal
 }
 func flagprint(f Flag) {
@ -111,41 +103,25 @@ func flagprint(f Flag) {
 		fmt.Printf("\t-%v -%v %T \n\t  %v\t默认值:%v\n", f.sStr, f.lStr, f.dv.int, f.help, f.dv.int)
 	case boolVal:
 		fmt.Printf("\t-%v -%v %T \n\t  %v\t默认值:%v\n", f.sStr, f.lStr, f.dv.bool, f.help, f.dv.bool)
-	case extVal:
-		fmt.Printf("\t-%v -%v %T \n\t  %v\t默认值:%v\n", f.sStr, f.lStr, f.dv.extdef, f.help, f.dv.extdef)
 	default:
 		panic("unhandled default case")
 	}
 }
 func flagInit(f *Flag) {
 	if f.v.string != nil {
-		pflag.StringVarP(f.v.string, f.lStr, f.sStr, f.dv.string, f.help)
+		flag.StringVar(f.v.string, f.sStr, f.dv.string, "")
+		flag.StringVar(f.v.string, f.lStr, f.dv.string, f.help)
 	}
 	if f.v.bool != nil {
-		pflag.BoolVarP(f.v.bool, f.lStr, f.sStr, f.dv.bool, f.help)
+		flag.BoolVar(f.v.bool, f.sStr, f.dv.bool, "")
+		flag.BoolVar(f.v.bool, f.lStr, f.dv.bool, f.help)
 	}
 	if f.v.int != nil {
-		pflag.IntVarP(f.v.int, f.lStr, f.sStr, f.dv.int, f.help)
-	}
-	if f.v.ext != nil {
-		pflag.StringVarP(f.v.ext, f.lStr, f.sStr, f.dv.string, f.help)
-		pflag.Lookup(f.lStr).NoOptDefVal = f.dv.extdef
-	}
-	if f.v.sl != nil {
-		pflag.StringArrayVarP(f.v.sl, f.lStr, f.sStr, []string{f.dv.string}, f.help)
-	}
-	if f.v.il != nil {
-		pflag.IntSliceVarP(f.v.il, f.lStr, f.sStr, []int{f.dv.int}, f.help)
-	}
-}
-func flagExt() {
-	if config.logFilePath != "" {
-		config.enableLog = true
-	}
-	if config.timesFmt != "" {
-		config.timesTamp = true
+		flag.IntVar(f.v.int, f.sStr, f.dv.int, "")
+		flag.IntVar(f.v.int, f.lStr, f.dv.int, f.help)
 	}
 }
+
 func getCliFlag() {
 	ports, err := serial.GetPortsList()
 	if err != nil {
@ -202,24 +178,6 @@ func getCliFlag() {
 	).Display()
 	if v {
 		config.inputCode = "hex"
-		b, _ := inf.NewText(
-			text.WithPrompt("Frames:"),
-			text.WithPromptStyle(theme.DefaultTheme.PromptStyle),
-			text.WithDefaultValue("16"),
-		).Display()
-		config.frameSize, _ = strconv.Atoi(b)
-	}
-	v, _ = inf.NewConfirmWithSelection(
-		confirm.WithPrompt("启用时间戳"),
-	).Display()
-	config.timesTamp = v
-	if v {
-		b, _ := inf.NewText(
-			text.WithPrompt("格式化字段:"),
-			text.WithPromptStyle(theme.DefaultTheme.PromptStyle),
-			text.WithDefaultValue(timeExt.dv.extdef),
-		).Display()
-		config.timesFmt = b
 	}
 	v, _ = inf.NewConfirmWithSelection(
 		confirm.WithPrompt("启用高级配置"),
@ -276,7 +234,7 @@ func getCliFlag() {
 			).Display()
 			config.outputCode = t
 		}
-	G_F_mode:
+
 		s, _ = inf.NewSingleSelect(
 			forwards,
 			singleselect.WithKeyBinding(selectKeymap),
@ -284,14 +242,13 @@ func getCliFlag() {
 			singleselect.WithFilterInput(inputs),
 		).Display("选择转发模式")
 		if s != 0 {
-			config.forWard = append(config.forWard, s)
+			config.forWard = s
 			t, _ = inf.NewText(
 				text.WithPrompt("地址:"),
 				text.WithPromptStyle(theme.DefaultTheme.PromptStyle),
 				text.WithDefaultValue(address.dv.string),
 			).Display()
-			config.address = append(config.address, t)
-			goto G_F_mode
+			config.address = t
 		}

 		e, _ := inf.NewConfirmWithSelection(
@ -303,7 +260,7 @@ func getCliFlag() {
 			t, _ = inf.NewText(
 				text.WithPrompt("Path:"),
 				text.WithPromptStyle(theme.DefaultTheme.PromptStyle),
-				text.WithDefaultValue("./%s-$s.txt"),
+				text.WithDefaultValue(logFilePath.dv.string),
 			).Display()
 			config.logFilePath = t
 		}
--- a/go.mod
+++ b/go.mod
@ -3,53 +3,35 @@ module COM
 go 1.22

 require (
-	github.com/charmbracelet/bubbles v0.18.0
 	github.com/fzdwx/infinite v0.12.1
-	github.com/gobwas/ws v1.4.0
-	github.com/spf13/pflag v1.0.5
-	github.com/trzsz/trzsz-go v1.1.7
 	github.com/zimolab/charsetconv v0.1.2
 	go.bug.st/serial v1.6.2
-	golang.org/x/term v0.19.0
 )

 require (
-	github.com/UserExistsError/conpty v0.1.2 // indirect
-	github.com/akavel/rsrc v0.10.2 // indirect
-	github.com/alexflint/go-scalar v1.2.0 // indirect
 	github.com/atotto/clipboard v0.1.4 // indirect
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
-	github.com/charmbracelet/bubbletea v0.25.0 // indirect
-	github.com/charmbracelet/lipgloss v0.9.1 // indirect
-	github.com/chzyer/readline v1.5.1 // indirect
+	github.com/charmbracelet/bubbles v0.16.1 // indirect
+	github.com/charmbracelet/bubbletea v0.24.2 // indirect
+	github.com/charmbracelet/lipgloss v0.7.1 // indirect
 	github.com/containerd/console v1.0.4-0.20230313162750-1ae8d489ac81 // indirect
 	github.com/creack/goselect v0.1.2 // indirect
-	github.com/creack/pty v1.1.21 // indirect
-	github.com/dchest/jsmin v0.0.0-20220218165748-59f39799265f // indirect
 	github.com/duke-git/lancet/v2 v2.2.1 // indirect
 	github.com/fzdwx/iter v0.0.0-20230511075109-0afee9319312 // indirect
-	github.com/gobwas/httphead v0.1.0 // indirect
-	github.com/gobwas/pool v0.2.1 // indirect
-	github.com/josephspurrier/goversioninfo v1.4.0 // indirect
-	github.com/klauspost/compress v1.17.4 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
-	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/mattn/go-runewidth v0.0.14 // indirect
 	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
 	github.com/muesli/cancelreader v0.2.2 // indirect
 	github.com/muesli/reflow v0.3.0 // indirect
-	github.com/muesli/termenv v0.15.2 // indirect
-	github.com/ncruces/zenity v0.10.10 // indirect
-	github.com/randall77/makefat v0.0.0-20210315173500-7ddd0e42c844 // indirect
-	github.com/rivo/uniseg v0.4.6 // indirect
+	github.com/muesli/termenv v0.15.1 // indirect
+	github.com/rivo/uniseg v0.4.4 // indirect
 	github.com/rotisserie/eris v0.5.4 // indirect
-	github.com/sahilm/fuzzy v0.1.1-0.20230530133925-c48e322e2a8f // indirect
-	github.com/trzsz/go-arg v1.5.3 // indirect
-	github.com/trzsz/promptui v0.10.5 // indirect
+	github.com/sahilm/fuzzy v0.1.0 // indirect
 	golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1 // indirect
-	golang.org/x/image v0.14.0 // indirect
 	golang.org/x/sync v0.2.0 // indirect
 	golang.org/x/sys v0.19.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/term v0.19.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
 )
--- a/image/img10.png
+++ b/image/img10.png
--- a/image/img11.png
+++ b/image/img11.png
--- a/image/img12.png
+++ b/image/img12.png
--- a/image/img8.png
+++ b/image/img8.png
--- a/image/img9.png
+++ b/image/img9.png
--- a/main.go
+++ b/main.go
@ -1,24 +1,121 @@
 package main

 import (
+	"bufio"
+	"flag"
 	"fmt"
-	"github.com/spf13/pflag"
+	"github.com/zimolab/charsetconv"
+	"go.bug.st/serial"
 	"io"
 	"log"
+	"net"
 	"os"
+	"strings"
 )

+var (
+	serialPort serial.Port
+	err        error
+	args       []string
+)
+
+var (
+	in   io.Reader = os.Stdin
+	out  io.Writer = os.Stdout
+	ins            = []io.Reader{os.Stdin}
+	outs           = []io.Writer{os.Stdout}
+)
+
+func checkPortAvailability(name string) ([]string, error) {
+	ports, err := serial.GetPortsList()
+	if err != nil {
+		log.Fatal(err)
+	}
+	if len(ports) == 0 {
+		return nil, fmt.Errorf("无串口")
+	}
+	if name == "" {
+		return ports, fmt.Errorf("串口未指定")
+	}
+	for _, port := range ports {
+		if strings.Compare(port, name) == 0 {
+			return ports, nil
+		}
+	}
+	return ports, fmt.Errorf("串口 " + name + " 未在线")
+}
+
 func init() {
 	log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile | log.Lmsgprefix)
 	for _, f := range flags {
 		flagInit(&f)
 	}
+	flag.Func("h", "获取帮助", func(s string) error {
+		ports, err := checkPortAvailability(s)
+		if err != nil {
+			fmt.Println(err)
+			printUsage(ports)
+			os.Exit(0)
+		}
+		return err
+	})
 	cmdinit()
 }

+func input(in io.Reader) {
+	input := bufio.NewScanner(in)
+	var ok = false
+	for {
+		input.Scan()
+		ok = false
+		args = strings.Split(input.Text(), " ")
+		for _, cmd := range commands {
+			if strings.Compare(strings.TrimSpace(args[0]), cmd.name) == 0 {
+				cmd.function()
+				ok = true
+			}
+		}
+		if !ok {
+			_, err := io.WriteString(serialPort, input.Text())
+			if err != nil {
+				log.Fatal(err)
+			}
+			_, err = io.WriteString(serialPort, config.endStr)
+			if err != nil {
+				log.Fatal(err)
+			}
+		}
+		err = serialPort.Drain()
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}
+
+func strout(out io.Writer, cs, str string) {
+	err = charsetconv.EncodeWith(strings.NewReader(str), out, charsetconv.Charset(cs), false)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func output() {
+	if strings.Compare(config.inputCode, "hex") == 0 {
+		b := make([]byte, 16)
+		r, _ := io.LimitReader(serialPort, int64(config.frameSize)).Read(b)
+		if r != 0 {
+			strout(out, config.outputCode, fmt.Sprintf("% X %q \n", b, b))
+		}
+	} else {
+		err = charsetconv.ConvertWith(serialPort, charsetconv.Charset(config.inputCode), out, charsetconv.Charset(config.outputCode), false)
+	}
+	if err != nil {
+		log.Fatal(err)
+	}
+}
 func main() {
-	pflag.Parse()
-	flagExt()
+	flag.Parse()
+
 	if config.portName == "" {
 		getCliFlag()
 	}
@ -28,25 +125,46 @@ func main() {
 		printUsage(ports)
 		os.Exit(0)
 	}
+	mode := &serial.Mode{
+		BaudRate: config.baudRate,
+		StopBits: serial.StopBits(config.stopBits),
+		DataBits: config.dataBits,
+		Parity:   serial.Parity(config.parityBit),
+	}
+	serialPort, err = serial.Open(config.portName, mode)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer func(port serial.Port) {
+		err := port.Close()
+		if err != nil {
+			log.Fatal(err)
+		}
+	}(serialPort)

-	// 日志文件输出检测
-	checkLogOpen()
-
-	//串口设备开启
-	OpenSerial()
-
-	defer CloseSerial()
-	// 打开文件服务
-	OpenTrzsz()
-
-	defer CloseTrzsz()
-
-	//开启转发
-	OpenForwarding()
-
-	// 获取终端输入
-	go input(in)
-
+	if FoeWardMode(config.forWard) != NOT {
+		conn := setForWardClient()
+		ins = append(ins, conn)
+		outs = append(outs, conn)
+		defer func(conn net.Conn) {
+			err := conn.Close()
+			if err != nil {
+				log.Fatal(err)
+			}
+		}(conn)
+	}
+	if len(ins) != 0 {
+		for _, reader := range ins {
+			go input(reader)
+		}
+	}
+	if config.enableLog {
+		f, err := os.OpenFile(config.logFilePath, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0666)
+		if err != nil {
+			log.Fatal(err)
+		}
+		outs = append(outs, f)
+	}
 	if len(outs) != 1 {
 		out = io.MultiWriter(outs...)
 	}
--- a/mutual.go
+++ b/mutual.go
@ -1,85 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"github.com/trzsz/trzsz-go/trzsz"
-	"github.com/zimolab/charsetconv"
-	"go.bug.st/serial"
-	"io"
-	"log"
-	"os"
-	"strings"
-	"time"
-)
-
-var (
-	serialPort  serial.Port
-	in          io.Reader = os.Stdin
-	out         io.Writer = os.Stdout
-	outs                  = []io.Writer{os.Stdout}
-	trzszFilter *trzsz.TrzszFilter
-	clientIn    *io.PipeReader
-	stdoutPipe  *io.PipeReader
-	stdinPipe   *io.PipeWriter
-	clientOut   *io.PipeWriter
-)
-
-func input(in io.Reader) {
-	var err error
-	input := bufio.NewScanner(in)
-	var ok = false
-	for {
-		input.Scan()
-		ok = false
-		args = strings.Split(input.Text(), " ")
-		for _, cmd := range commands {
-			if strings.Compare(strings.TrimSpace(args[0]), cmd.name) == 0 {
-				cmd.function()
-				ok = true
-			}
-		}
-		if !ok {
-			_, err := io.WriteString(stdinPipe, input.Text())
-			if err != nil {
-				log.Fatal(err)
-			}
-			_, err = io.WriteString(stdinPipe, config.endStr)
-			if err != nil {
-				log.Fatal(err)
-			}
-		}
-		err = serialPort.Drain()
-		ErrorF(err)
-	}
-}
-
-func strout(out io.Writer, cs, str string) {
-	err := charsetconv.EncodeWith(strings.NewReader(str), out, charsetconv.Charset(cs), false)
-	ErrorF(err)
-}
-
-func output() {
-	var err error
-	if strings.Compare(config.inputCode, "hex") == 0 {
-		b := make([]byte, config.frameSize)
-		r, _ := io.LimitReader(stdoutPipe, int64(config.frameSize)).Read(b)
-		if r != 0 {
-			if config.timesTamp {
-				strout(out, config.outputCode, fmt.Sprintf("%v % X %q \n", time.Now().Format(config.timesFmt), b, b))
-			} else {
-				strout(out, config.outputCode, fmt.Sprintf("% X %q \n", b, b))
-			}
-		}
-	} else {
-		if config.timesTamp {
-			line, _, _ := bufio.NewReader(stdoutPipe).ReadLine()
-			if line != nil {
-				strout(out, config.outputCode, fmt.Sprintf("%v %s\n", time.Now().Format(config.timesFmt), line))
-			}
-		} else {
-			err = charsetconv.ConvertWith(stdoutPipe, charsetconv.Charset(config.inputCode), out, charsetconv.Charset(config.outputCode), false)
-		}
-	}
-	ErrorP(err)
-}
--- a/utils.go
+++ b/utils.go
@ -1,125 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"github.com/trzsz/trzsz-go/trzsz"
-	"go.bug.st/serial"
-	"golang.org/x/term"
-	"io"
-	"log"
-	"net"
-	"os"
-	"os/signal"
-	"runtime"
-	"strings"
-)
-
-func checkPortAvailability(name string) ([]string, error) {
-	ports, err := serial.GetPortsList()
-	if err != nil {
-		log.Fatal(err)
-	}
-	if len(ports) == 0 {
-		return nil, fmt.Errorf("无串口")
-	}
-	if name == "" {
-		return ports, fmt.Errorf("串口未指定")
-	}
-	for _, port := range ports {
-		if strings.Compare(port, name) == 0 {
-			return ports, nil
-		}
-	}
-	return ports, fmt.Errorf("串口 " + name + " 未在线")
-}
-
-func OpenSerial() {
-	var err error
-	mode := &serial.Mode{
-		BaudRate: config.baudRate,
-		StopBits: serial.StopBits(config.stopBits),
-		DataBits: config.dataBits,
-		Parity:   serial.Parity(config.parityBit),
-	}
-	serialPort, err = serial.Open(config.portName, mode)
-	ErrorF(err)
-	return
-}
-
-func CloseSerial() {
-	err := serialPort.Close()
-	ErrorF(err)
-	return
-}
-
-var termch chan os.Signal
-
-// OpenTrzsz create a TrzszFilter to support trzsz ( trz / tsz ).
-//
-// ┌────────┐   stdinPipe  ┌────────┐   ClientIn   ┌─────────────┐   SerialIn   ┌────────┐
-// │        ├─────────────►│        ├─────────────►│             ├─────────────►│        │
-// │ mutual │              │ Client │              │ TrzszFilter │              │ Serial │
-// │        │◄─────────────│        │◄─────────────┤             │◄─────────────┤        │
-// └────────┘   stdoutPipe └────────┘   ClientOut  └─────────────┘   SerialOut  └────────┘
-func OpenTrzsz() {
-	fd := int(os.Stdin.Fd())
-	width, _, err := term.GetSize(fd)
-	if err != nil {
-		if runtime.GOOS != "windows" {
-			fmt.Printf("term get size failed: %s\n", err)
-			return
-		}
-		width = 80
-	}
-
-	clientIn, stdinPipe = io.Pipe()
-	stdoutPipe, clientOut = io.Pipe()
-	trzszFilter = trzsz.NewTrzszFilter(clientIn, clientOut, serialPort, serialPort,
-		trzsz.TrzszOptions{TerminalColumns: int32(width), EnableZmodem: true})
-	trzsz.SetAffectedByWindows(false)
-	termch = make(chan os.Signal, 1)
-	go func() {
-		for range termch {
-			width, _, err := term.GetSize(fd)
-			if err != nil {
-				fmt.Printf("term get size failed: %s\n", err)
-				continue
-			}
-			trzszFilter.SetTerminalColumns(int32(width))
-		}
-	}()
-}
-
-func CloseTrzsz() {
-	signal.Stop(termch)
-	close(termch)
-}
-
-func OpenForwarding() {
-	for i, mode := range config.forWard {
-		if FoeWardMode(mode) != NOT {
-			conn := setForWardClient(FoeWardMode(mode), config.address[i])
-			outs = append(outs, conn)
-			go func() {
-				defer func(conn net.Conn) {
-					err := conn.Close()
-					if err != nil {
-						log.Fatal(err)
-					}
-				}(conn)
-				input(conn)
-			}()
-		}
-	}
-}
-
-func ErrorP(err error) {
-	if err != nil {
-		fmt.Fprint(os.Stderr, err)
-	}
-}
-func ErrorF(err error) {
-	if err != nil {
-		log.Fatal(err)
-	}
-}