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-rw-r--r--vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Integer.php91
1 files changed, 91 insertions, 0 deletions
diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Integer.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Integer.php
new file mode 100644
index 000000000..400e707d2
--- /dev/null
+++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Integer.php
@@ -0,0 +1,91 @@
+<?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
+{
+
+ /**
+ * Whether or not negative values are allowed.
+ * @type bool
+ */
+ protected $negative = true;
+
+ /**
+ * Whether or not zero is allowed.
+ * @type bool
+ */
+ protected $zero = true;
+
+ /**
+ * Whether or not positive values are allowed.
+ * @type bool
+ */
+ 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;
+ }
+
+ /**
+ * @param string $integer
+ * @param HTMLPurifier_Config $config
+ * @param HTMLPurifier_Context $context
+ * @return bool|string
+ */
+ public function validate($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