| 0,0 → 1,64 |
|---|
| <?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) { |
| $a = unpack('Nx', substr($str, $pos, 4)); |
| return $a['x']; |
| } |
| |
| static public function nuint32($n, $str, $pos = 0) { |
| $r = array(); |
| for ($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) { |
| $c = ord($str[$pos++]); |
| $r |= (($c & 0x7F) << $i); |
| } |
| return $r; |
| } |
| } |