57 lines
1.2 KiB
PHP
57 lines
1.2 KiB
PHP
<?php declare(strict_types=1);
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namespace Aviat\Kilo\Enum;
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use Aviat\Kilo\Traits;
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use function Aviat\Kilo\ctrl_key;
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/**
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* 'Raw' input from stdin
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*/
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class KeyCode {
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use Traits\ConstList;
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public const ARROW_DOWN = "\e[B";
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public const ARROW_LEFT = "\e[D";
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public const ARROW_RIGHT = "\e[C";
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public const ARROW_UP = "\e[A";
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public const BACKSPACE = "\x7f";
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public const CARRIAGE_RETURN = "\r";
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public const DEL_KEY = "\e[3~";
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public const EMPTY = '';
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public const ENTER = "\r";
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public const ESCAPE = "\e";
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public const FORM_FEED = "\f";
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public const NEWLINE = "\n";
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public const NULL = "\0";
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public const PAGE_DOWN = "\e[6~";
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public const PAGE_UP = "\e[5~";
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public const SPACE = ' ';
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public const TAB = "\t";
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public const VERTICAL_TAB = "\v";
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/**
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* Returns the ascii character for the specified
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* ctrl + letter combo
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*
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* @param string $char
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* @return string
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*/
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public static function CTRL(string $char): ?string
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{
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$char = strtolower($char);
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$ord = ord($char);
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// a = 0x61
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// z = 0x7a
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// So, 0x60 < $ord < 0x7b
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if ($ord > 0x60 && $ord < 0x7b)
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{
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return chr(ctrl_key($char));
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}
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// Invalid input, not an ascii letter
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return NULL;
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}
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}
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