Breite im Terminal begrenzen

internal/formatter/terminal_linux.go

@@ -0,0 +1,29 @@
+//go:build linux
+
+package formatter
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+type winsize struct {
+	Row, Col       uint16
+	Xpixel, Ypixel uint16
+}
+
+// getTerminalWidth returns the width of the stdout terminal in columns.
+// If the output is not a terminal or the width cannot be determined, it returns (0, error).
+func getTerminalWidth() (int, error) {
+	var ws winsize
+	_, _, errno := syscall.Syscall(
+		syscall.SYS_IOCTL,
+		uintptr(syscall.Stdout),
+		uintptr(syscall.TIOCGWINSZ),
+		uintptr(unsafe.Pointer(&ws)),
+	)
+	if errno != 0 {
+		return 0, errno
+	}
+	return int(ws.Col), nil
+}