gilo/internal/editor/editor.go

package editor

import (
	"bufio"
	"os"

	"timshome.page/gilo/internal/char"
	"timshome.page/gilo/internal/terminal"
)

type Editor struct {
	rows int
	cols int
}

var reader = bufio.NewReader(os.Stdin)

func readKey() (rune, int) {
	ch, size, err := reader.ReadRune()
	if err != nil {
		panic(err)
	}

	return ch, size
}

func drawRows() {
	for y :=0; y < 24; y += 1 {
		terminal.OutLn("~")
	}
}

func RefreshScreen() {
	terminal.ANSICode(terminal.ClearScreen)
	terminal.ANSICode(terminal.ResetCursor)

	drawRows()

	terminal.ANSICode(terminal.ResetCursor)
}

func ProcessKeypress() bool {
	ch, _ := readKey()

	// Clean up on exit
	if ch == char.Ctrl('q') {
		terminal.ANSICode(terminal.ClearScreen)
		terminal.ANSICode(terminal.ResetCursor)

		return false
	}

	// Ugliest syntax structure ever?
	switch {
	case char.IsCtrl(ch):
		terminal.OutLn("%d", ch)
	default:
		terminal.OutLn("%d ('%c')", ch, ch)
	}

	return true
}