#!/usr/bin/php
<?php

/*
 * crc32 string
 * Copyright 2019 Daniel Marschall, ViaThinkSoft
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

if ($argc != 2) {
	echo "Syntax: $argv[0] <str>\n";
	exit(2);
}

# TODO: crc32file (inkl wildcard)

$str = trim($argv[1]);
$crc = crc32($str);
echo "crc32('$str') = $crc (0x".zerofill(dechex($crc), 4*2).")\n";
exit(0);

# ---

function zerofill($mStretch, $iLength = 2) {
	# http://php.net/manual/en/function.str-pad.php#74259
	$sPrintfString = '%0' . (int)$iLength . 's';
	return sprintf($sPrintfString, $mStretch);
}