change cbreak functions to panic rather than return an error on failure

cui/cui.go

@@ -57,10 +57,7 @@ func moveCursorToward(dir string, amount int) {
 func Exit() {
 	moveCursorToward("down", 500)
 	moveCursorToward("right", 500)
-	err := SetLineMode()
-	if err != nil {
-		panic(err)
-	}
+	SetLineMode()
 
 	fmt.Print("\n")
 	fmt.Print("\033[?25h")
@@ -126,10 +123,7 @@ func Getch() rune {
 }
 
 func GetLine() (string, error) {
-	err := SetLineMode()
-	if err != nil {
-		return "", err
-	}
+	SetLineMode()
 
 	reader := bufio.NewReader(os.Stdin)
 	fmt.Print(": ")
@@ -138,30 +132,28 @@ func GetLine() (string, error) {
 		return "", err
 	}
 
-	err = SetCharMode()
-	if err != nil {
-		return "", err
-	}
-
+	SetCharMode()
 	return text[:len(text)-1], nil
 }
 
-func SetCharMode() error {
+func SetCharMode() {
 	cmd := exec.Command("stty", "cbreak", "-echo")
 	cmd.Stdin = os.Stdin
 	cmd.Stdout = os.Stdout
 	err := cmd.Run()
 	if err != nil {
-		return err
+		panic(err)
 	}
 
-	_, err = fmt.Print("\033[?25l")
-	return err
+	fmt.Print("\033[?25l")
 }
 
-func SetLineMode() error {
+func SetLineMode() {
 	cmd := exec.Command("stty", "-cbreak", "echo")
 	cmd.Stdin = os.Stdin
 	cmd.Stdout = os.Stdout
-	return cmd.Run()
+	err := cmd.Run()
+	if err != nil {
+		panic(err)
+	}
 }

cui/screen.go

@@ -142,7 +142,7 @@ func (s *Screen) GetSize() {
 
 // NewScreen is a constructor function that returns a pointer
 // to a Screen struct
-func NewScreen() (*Screen, error) {
+func NewScreen() *Screen {
 	if screenInit {
 		fmt.Println("Fatal error: Cannot create multiple screens")
 		os.Exit(1)
@@ -152,12 +152,10 @@ func NewScreen() (*Screen, error) {
 	for i := 0; i < s.Height; i++ {
 		fmt.Println()
 	}
-	err := SetCharMode()
-	if err != nil {
-		return nil, err
-	}
+
+	SetCharMode()
 
 	Clear("screen")
 	screenInit = true
-	return &s, nil
+	return &s
 }

main.go

@@ -8,6 +8,7 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
+
 	"tildegit.org/sloum/bombadillo/cmdparse"
 	"tildegit.org/sloum/bombadillo/config"
 	"tildegit.org/sloum/bombadillo/cui"
@@ -403,16 +404,8 @@ func displayError(err error) {
 func initClient() error {
 	history.Position = -1
 
-	var err error
-	screen, err = cui.NewScreen()
-	if err != nil {
-		return err
-	}
-
-	err = cui.SetCharMode()
-	if err != nil {
-		return err
-	}
+	screen = cui.NewScreen()
+	cui.SetCharMode()
 
 	screen.AddWindow(2, 1, screen.Height-2, screen.Width, false, false, true)
 	screen.Windows[0].Active = true