summaryrefslogtreecommitdiffstats
path: root/library/vendor/HTMLPurifier/AttrDef/HTML/Pixels.php
diff options
context:
space:
mode:
Diffstat (limited to 'library/vendor/HTMLPurifier/AttrDef/HTML/Pixels.php')
-rw-r--r--library/vendor/HTMLPurifier/AttrDef/HTML/Pixels.php76
1 files changed, 76 insertions, 0 deletions
diff --git a/library/vendor/HTMLPurifier/AttrDef/HTML/Pixels.php b/library/vendor/HTMLPurifier/AttrDef/HTML/Pixels.php
new file mode 100644
index 0000000..a1d019e
--- /dev/null
+++ b/library/vendor/HTMLPurifier/AttrDef/HTML/Pixels.php
@@ -0,0 +1,76 @@
+<?php
+
+/**
+ * Validates an integer representation of pixels according to the HTML spec.
+ */
+class HTMLPurifier_AttrDef_HTML_Pixels extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * @type int
+ */
+ protected $max;
+
+ /**
+ * @param int $max
+ */
+ public function __construct($max = null)
+ {
+ $this->max = $max;
+ }
+
+ /**
+ * @param string $string
+ * @param HTMLPurifier_Config $config
+ * @param HTMLPurifier_Context $context
+ * @return bool|string
+ */
+ public function validate($string, $config, $context)
+ {
+ $string = trim($string);
+ if ($string === '0') {
+ return $string;
+ }
+ if ($string === '') {
+ return false;
+ }
+ $length = strlen($string);
+ if (substr($string, $length - 2) == 'px') {
+ $string = substr($string, 0, $length - 2);
+ }
+ if (!is_numeric($string)) {
+ return false;
+ }
+ $int = (int)$string;
+
+ if ($int < 0) {
+ return '0';
+ }
+
+ // upper-bound value, extremely high values can
+ // crash operating systems, see <http://ha.ckers.org/imagecrash.html>
+ // WARNING, above link WILL crash you if you're using Windows
+
+ if ($this->max !== null && $int > $this->max) {
+ return (string)$this->max;
+ }
+ return (string)$int;
+ }
+
+ /**
+ * @param string $string
+ * @return HTMLPurifier_AttrDef
+ */
+ public function make($string)
+ {
+ if ($string === '') {
+ $max = null;
+ } else {
+ $max = (int)$string;
+ }
+ $class = get_class($this);
+ return new $class($max);
+ }
+}
+
+// vim: et sw=4 sts=4