mirror of
https://github.com/friendica/friendica
synced 2024-12-30 22:42:19 +00:00
73 lines
2.2 KiB
PHP
Executable file
73 lines
2.2 KiB
PHP
Executable file
<?php
|
|
|
|
/**
|
|
* Validates an integer.
|
|
* @note While this class was modeled off the CSS definition, no currently
|
|
* allowed CSS uses this type. The properties that do are: widows,
|
|
* orphans, z-index, counter-increment, counter-reset. Some of the
|
|
* HTML attributes, however, find use for a non-negative version of this.
|
|
*/
|
|
class HTMLPurifier_AttrDef_Integer extends HTMLPurifier_AttrDef
|
|
{
|
|
|
|
/**
|
|
* Bool indicating whether or not negative values are allowed
|
|
*/
|
|
protected $negative = true;
|
|
|
|
/**
|
|
* Bool indicating whether or not zero is allowed
|
|
*/
|
|
protected $zero = true;
|
|
|
|
/**
|
|
* Bool indicating whether or not positive values are allowed
|
|
*/
|
|
protected $positive = true;
|
|
|
|
/**
|
|
* @param $negative Bool indicating whether or not negative values are allowed
|
|
* @param $zero Bool indicating whether or not zero is allowed
|
|
* @param $positive Bool indicating whether or not positive values are allowed
|
|
*/
|
|
public function __construct(
|
|
$negative = true, $zero = true, $positive = true
|
|
) {
|
|
$this->negative = $negative;
|
|
$this->zero = $zero;
|
|
$this->positive = $positive;
|
|
}
|
|
|
|
public function validate($integer, $config, $context) {
|
|
|
|
$integer = $this->parseCDATA($integer);
|
|
if ($integer === '') return false;
|
|
|
|
// we could possibly simply typecast it to integer, but there are
|
|
// certain fringe cases that must not return an integer.
|
|
|
|
// clip leading sign
|
|
if ( $this->negative && $integer[0] === '-' ) {
|
|
$digits = substr($integer, 1);
|
|
if ($digits === '0') $integer = '0'; // rm minus sign for zero
|
|
} elseif( $this->positive && $integer[0] === '+' ) {
|
|
$digits = $integer = substr($integer, 1); // rm unnecessary plus
|
|
} else {
|
|
$digits = $integer;
|
|
}
|
|
|
|
// test if it's numeric
|
|
if (!ctype_digit($digits)) return false;
|
|
|
|
// perform scope tests
|
|
if (!$this->zero && $integer == 0) return false;
|
|
if (!$this->positive && $integer > 0) return false;
|
|
if (!$this->negative && $integer < 0) return false;
|
|
|
|
return $integer;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// vim: et sw=4 sts=4
|