72 lines
1.9 KiB
PHP
72 lines
1.9 KiB
PHP
<?php declare(strict_types=1);
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/*
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* Copyright (c) 2020 https://rewiv.com sikofitt@gmail.com
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*
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* This Source Code Form is subject to the
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* terms of the Mozilla Public License, v. 2.0.
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*
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* If a copy of the MPL was not distributed with this file,
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* You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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namespace Sikofitt\Console;
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use FFI;
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use RuntimeException;
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final class Getch
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{
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private const LINUX_LIBRARY = __DIR__ . '/Resources/libgetch.so';
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private const WINDOWS_LIBRARY = 'ucrtbase.dll';
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private static ?FFI $ffi = null;
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public function __construct(string $linuxLibrary = null)
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{
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if (null === $linuxLibrary) {
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$linuxLibrary = self::LINUX_LIBRARY;
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}
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if (self::$ffi === null) {
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$osFamily = PHP_OS_FAMILY;
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if ($osFamily === 'Windows') {
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self::$ffi = FFI::cdef('char _getch(); int _ungetch(char c);', self::WINDOWS_LIBRARY);
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} elseif ($osFamily === 'Linux') {
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if (!file_exists($linuxLibrary)) {
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throw new RuntimeException(sprintf('Could not find library file %s.', $linuxLibrary));
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}
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self::$ffi = FFI::cdef('char _getch(); int _ungetch(char ch);', $linuxLibrary);
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} else {
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throw new RuntimeException(sprintf('Sorry, %s is not supported yet.', $osFamily));
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}
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}
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}
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public function getch(): string
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{
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return self::$ffi->_getch();
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}
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public function ungetch(string $char)
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{
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return self::$ffi->_ungetch($char[0]);
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}
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public function ungetchString(string $string): bool
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{
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$stringReverse = \strrev($string);
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$result = false;
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foreach(\str_split($stringReverse) as $char) {
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$result = self::$ffi->_ungetch($char) > 0;
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if(!$result) {
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return false;
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}
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}
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return $result;
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}
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}
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