ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
Integer.php
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1<?php
2
11{
12
17 protected $negative = true;
18
23 protected $zero = true;
24
29 protected $positive = true;
30
36 public function __construct($negative = true, $zero = true, $positive = true)
37 {
38 $this->negative = $negative;
39 $this->zero = $zero;
40 $this->positive = $positive;
41 }
42
49 public function validate($integer, $config, $context)
50 {
51 $integer = $this->parseCDATA($integer);
52 if ($integer === '') {
53 return false;
54 }
55
56 // we could possibly simply typecast it to integer, but there are
57 // certain fringe cases that must not return an integer.
58
59 // clip leading sign
60 if ($this->negative && $integer[0] === '-') {
61 $digits = substr($integer, 1);
62 if ($digits === '0') {
63 $integer = '0';
64 } // rm minus sign for zero
65 } elseif ($this->positive && $integer[0] === '+') {
66 $digits = $integer = substr($integer, 1); // rm unnecessary plus
67 } else {
68 $digits = $integer;
69 }
70
71 // test if it's numeric
72 if (!ctype_digit($digits)) {
73 return false;
74 }
75
76 // perform scope tests
77 if (!$this->zero && $integer == 0) {
78 return false;
79 }
80 if (!$this->positive && $integer > 0) {
81 return false;
82 }
83 if (!$this->negative && $integer < 0) {
84 return false;
85 }
86
87 return $integer;
88 }
89}
90
91// vim: et sw=4 sts=4
Validates an integer.
Definition: Integer.php:11
$positive
Whether or not positive values are allowed.
Definition: Integer.php:29
__construct($negative=true, $zero=true, $positive=true)
Definition: Integer.php:36
$negative
Whether or not negative values are allowed.
Definition: Integer.php:17
$zero
Whether or not zero is allowed.
Definition: Integer.php:23
validate($integer, $config, $context)
Definition: Integer.php:49
Base class for all validating attribute definitions.
Definition: AttrDef.php:14
parseCDATA($string)
Convenience method that parses a string as if it were CDATA.
Definition: AttrDef.php:60