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authorMike Macgirvin <mike@macgirvin.com>2010-09-08 20:14:17 -0700
committerMike Macgirvin <mike@macgirvin.com>2010-09-08 20:14:17 -0700
commitffb1997902facb36b78a7cfa522f41f2b3d71cda (patch)
treee9fe47acf26c5fd2c742677f2610b60d3008eb26 /library/HTMLPurifier/AttrDef/HTML/Length.php
parentb49858b038a0a05bbe7685929e88071d0e125538 (diff)
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Diffstat (limited to 'library/HTMLPurifier/AttrDef/HTML/Length.php')
-rw-r--r--library/HTMLPurifier/AttrDef/HTML/Length.php41
1 files changed, 41 insertions, 0 deletions
diff --git a/library/HTMLPurifier/AttrDef/HTML/Length.php b/library/HTMLPurifier/AttrDef/HTML/Length.php
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+++ b/library/HTMLPurifier/AttrDef/HTML/Length.php
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+<?php
+
+/**
+ * Validates the HTML type length (not to be confused with CSS's length).
+ *
+ * This accepts integer pixels or percentages as lengths for certain
+ * HTML attributes.
+ */
+
+class HTMLPurifier_AttrDef_HTML_Length extends HTMLPurifier_AttrDef_HTML_Pixels
+{
+
+ public function validate($string, $config, $context) {
+
+ $string = trim($string);
+ if ($string === '') return false;
+
+ $parent_result = parent::validate($string, $config, $context);
+ if ($parent_result !== false) return $parent_result;
+
+ $length = strlen($string);
+ $last_char = $string[$length - 1];
+
+ if ($last_char !== '%') return false;
+
+ $points = substr($string, 0, $length - 1);
+
+ if (!is_numeric($points)) return false;
+
+ $points = (int) $points;
+
+ if ($points < 0) return '0%';
+ if ($points > 100) return '100%';
+
+ return ((string) $points) . '%';
+
+ }
+
+}
+
+// vim: et sw=4 sts=4