Problem when Input PF Key

[iskandarzun]

Hi,
First thing is thanks for cool packages to utilize x3270, I'm using it a lot you know because work related

The problem is, it looks like we can't send F1-F12 key function because validaKeyboard() function always return false in case we send F1-F12 key even it's provided in constant variables causing all variables apart from Enter and Tab useless.

// These constants represent the keyboard keys
const (
	Enter = "Enter"
	Tab   = "Tab"
	F1    = "PF(1)"
	F2    = "PF(2)"
	F3    = "PF(3)"
	F4    = "PF(4)"
	F5    = "PF(5)"
	F6    = "PF(6)"
	F7    = "PF(7)"
	F8    = "PF(8)"
	F9    = "PF(9)"
	F10   = "PF(10)"
	F11   = "PF(11)"
	F12   = "PF(12)"
)

......

//Press press a keyboard key
func (e *Emulator) Press(key string) error {
	if !e.validaKeyboard(key) {
		return fmt.Errorf("invalid key %s", key)
	}
	return e.execCommand(key)
}

//validaKeyboard valid if key passed by parameter if a key valid
func (e *Emulator) validaKeyboard(key string) bool {
	switch key {
	case Tab:
		return true
	case Enter:
		return true
	default:
		return false
	}
}

Should be checked whether it's key command function or not and send command below for example :
x3270if -t e.ScriptPort PF(1)

Maybe adding more function for PF key or just checking input in press() will solve the problem.

Thanks.

[mattheusv]

Sorry for delay...It's really nice to see that this package have been used.
Now, about the issue, implementation seems simple. Could you send a PR with fix?