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/
http/
mail/
program/
lib/
Crypt/
GPG/
- drwxr-xr-x
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Viewing file:  ByteUtils.php (3.1 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* A class for performing byte-wise string operations
*
* GPG I/O streams are managed using bytes rather than characters.
*
* PHP version 5
*
* LICENSE:
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @category Encryption
* @package Crypt_GPG
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2013 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id$
* @link http://pear.php.net/package/Crypt_GPG
*/
// {{{ class Crypt_GPG_ByteUtils
/**
* A class for performing byte-wise string operations
*
* GPG I/O streams are managed using bytes rather than characters. This class
* requires the mbstring extension to be available.
*
* @category Encryption
* @package Crypt_GPG
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2013 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @link http://pear.php.net/package/Crypt_GPG
* @link http://php.net/mbstring
*/
class Crypt_GPG_ByteUtils
{
// {{{ strlen()
/**
* Gets the length of a string in bytes
*
* This is used for stream-based communication with the GPG subprocess.
*
* @param string $string the string for which to get the length.
*
* @return integer the length of the string in bytes.
*/
public static function strlen($string)
{
return mb_strlen($string, '8bit');
}
// }}}
// {{{ substr()
/**
* Gets the substring of a string in bytes
*
* This is used for stream-based communication with the GPG subprocess.
*
* @param string $string the input string.
* @param integer $start the starting point at which to get the substring.
* @param integer $length optional. The length of the substring.
*
* @return string the extracted part of the string. Unlike the default PHP
* <kbd>substr()</kbd> function, the returned value is
* always a string and never false.
*/
public static function substr($string, $start, $length = null)
{
if ($length === null) {
return mb_substr(
$string,
$start,
self::strlen($string) - $start, '8bit'
);
}
return mb_substr($string, $start, $length, '8bit');
}
// }}}
}
// }}}
?>
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