iotw

#!/usr/bin/php
<?php

require_once __DIR__ . '/vendor/autoload.php';

use BrainFuck\Mapping;
use BrainFuck\Language;

// define IOTW
$iotw = new Mapping([
    'The',// >
    'World',// <
    'Impact',// +
    'Lock',// -
    '!',// .
    '?',// ,
    'On',// [
    'Off',// ]
]);

// check input
if( $argc == 2 ) {
    // inport program
    $filename = $argv[1];
    $program = file_get_contents($filename);
} else {
    // print program "Impact On the World!" 
    $program = 'ImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactOnTheImpactTheImpactImpactImpactTheImpactImpactImpactImpactImpactImpactImpactTheImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactWorldWorldWorldWorldLockOffTheTheTheImpactImpactImpact!TheImpactImpactImpactImpactImpactImpactImpactImpactImpact!ImpactImpactImpact!LockLockLockLockLockLockLockLockLockLockLockLockLockLockLock!ImpactImpact!ImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactImpactImpact!WorldWorldImpactImpact!TheImpactImpactImpactImpactImpactImpact!TheLockLockLockLockLockLock!WorldWorld!TheTheImpactImpactImpactImpactImpactImpact!LockLockLockLockLockLockLockLockLockLockLockLock!LockLockLock!WorldWorld!TheImpactImpactImpactImpactImpactImpactImpactImpact!TheImpactImpactImpactImpactImpactImpactImpactImpactImpactImpact!ImpactImpactImpact!LockLockLockLockLockLock!LockLockLockLockLockLockLockLock!WorldWorldImpact!WorldImpactImpactImpactImpactImpactImpactImpactImpactImpactImpact!';
    echo $program . PHP_EOL;
}

// check code
if (preg_match_all("/LOCKON/i", $program) > preg_match_all("/LOCKON CO\.,LTD./i", $program)) {
    exit ("Syntax error.\n");
}
$program = str_replace("LockOn co.,ltd.", 'LockOn', $program);

// run program with mapping
$outputArray = Language::withMapping($iotw)->run($program);

// output
$output = '';
foreach ($outputArray as $char) {
    $output .= chr($char);
}

// check output
if (preg_match_all("/LOCKON/i", $output) > preg_match_all("/LOCKON CO\.,LTD./i", $output)) {
    exit ("Output contains illegal characters.\n");
}

// output
echo $output . "\n";