Put Editor behind a constructor function

gilo.go

@@ -10,11 +10,13 @@ func main() {
 	oldState := terminal.RawOn()
 	defer terminal.RawOff(oldState)
 
+	e := editor.New()
+
 	// The input loop
 	for {
-		editor.RefreshScreen()
+		e.RefreshScreen()
 
-		if editor.ProcessKeypress() == false {
+		if e.ProcessKeypress() == false {
 			break
 		}
 	}

internal/editor/editor.go

@@ -5,29 +5,31 @@ import (
 	"timshome.page/gilo/internal/terminal"
 )
 
-type Editor struct {
+type editor struct {
 	rows int
 	cols int
 }
 
-func drawRows() {
-	_, rows := terminal.Size()
+func New() *editor {
+	cols, rows := terminal.Size()
 
-	for y :=0; y < rows; y += 1 {
-		terminal.OutLn("~")
-	}
+	e := new(editor)
+	e.cols = cols
+	e.rows = rows
+
+	return e
 }
 
-func RefreshScreen() {
+func (e *editor) RefreshScreen() {
 	terminal.ANSICode(terminal.ClearScreen)
 	terminal.ANSICode(terminal.ResetCursor)
 
-	drawRows()
+	e.drawRows()
 
 	terminal.ANSICode(terminal.ResetCursor)
 }
 
-func ProcessKeypress() bool {
+func (e *editor) ProcessKeypress() bool {
 	ch, _ := terminal.ReadKey()
 
 	// Clean up on exit
@@ -41,10 +43,20 @@ func ProcessKeypress() bool {
 	// Ugliest syntax structure ever?
 	switch {
 	case char.IsCtrl(ch):
-		terminal.OutLn("%d", ch)
+		terminal.WriteLn("%d", ch)
 	default:
-		terminal.OutLn("%d ('%c')", ch, ch)
+		terminal.WriteLn("%d ('%c')", ch, ch)
 	}
 
 	return true
 }
+
+func (e *editor) drawRows() {
+	for y :=0; y < e.rows; y += 1 {
+		terminal.Write("~")
+
+		if y < (e.rows - 1) {
+			terminal.Write("\r\n")
+		}
+	}
+}

internal/terminal/terminal.go

@@ -97,14 +97,19 @@ func Size () (width int, height int) {
 	// Figure out the size the hard way
 	height, width = sizeTrick()
 
-	OutLn("%d Rows, %d Cols", height, width)
+	WriteLn("%d Rows, %d Cols", height, width)
 
 	return width, height
 }
 
+
 // Print a formatted string to stdout, with CRLF line endings for proper terminal formatting
-func OutLn(format string, a ...interface{}) {
+func WriteLn(format string, a ...interface{}) {
 	formatted := fmt.Sprintf(format, a...)
 
 	fmt.Printf("%s\r\n", formatted)
 }
+
+func Write(format string, a ...interface{}) {
+	fmt.Printf(format, a...)
+}