<?php
/*
* binary.class.php:
* Utility functions for dealing with binary files/strings.
* All functions assume network byte order (big-endian).
*
* Copyright (C) 2008, 2009 Patrik Fimml
* Copyright (c) 2023 Daniel Marschall
*
* This file is part of glip.
*
* glip is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
* glip is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with glip. If not, see <http://www.gnu.org/licenses/>.
*/
namespace ViaThinkSoft\Glip;
final class Binary
{
static public function uint16($str, $pos = 0) {
return ord($str[$pos + 0]) << 8 | ord($str[$pos + 1]);
}
static public function uint32($str, $pos = 0) {
return $a['x'];
}
static public function nuint32($n, $str, $pos = 0) {
for ($i = 0; $i < $n; $i++, $pos += 4)
$r[] = Binary::uint32($str, $pos);
return $r;
}
static public function fuint32($f) {
return Binary
::uint32(fread($f, 4));
}
static public function nfuint32($n, $f) {
return Binary
::nuint32($n, fread($f, 4 * $n));
}
static public function git_varint($str, &$pos = 0) {
$r = 0;
$c = 0x80;
for ($i = 0; $c & 0x80; $i += 7) {
$r |= (($c & 0x7F) << $i);
}
return $r;
}
}