+<?php
+/**
+ * Validate - A bunch of static methods used to validate user input
+ * Split from Special:Preferences in 1.14 for more general use
+ */
+class Validate {
+
+ /**
+ * Given an inputed integer, determine if it's within a given
+ * range. If not, return the upper or lower boundary, whichever
+ * was crossed.
+ * @param int $val A user inputted integer
+ * @param int $min The lower limit
+ * @param int $max The upper limit
+ * @return int
+ */
+ function int( &$val, $min=0, $max=0x7fffffff ) {
+ $val = intval($val);
+ $val = min($val, $max);
+ $val = max($val, $min);
+ return $val;
+ }
+
+ /**
+ * Given an inputed float, determine if it's within a given
+ * range. If not, return the upper or lower boundary, whichever
+ * was crossed.
+ * @param float $val User inputed value
+ * @param float $min Lower limit
+ * @param float $max Uppser limit
+ * @return float
+ */
+ public static function float( &$val, $min, $max=0x7fffffff ) {
+ $val = floatval( $val );
+ $val = min( $val, $max );
+ $val = max( $val, $min );
+ return( $val );
+ }
+
+ /**
+ * Like int(), only return null if it's not a string
+ * @see Validate::int()
+ * @param int $val User given integer
+ * @param int $min Lower limit
+ * @param int $max Upper limit
+ * @return mixed [int or null]
+ */
+ public static function intOrNull( &$val, $min=0, $max=0x7fffffff ) {
+ $val = trim($val);
+ if($val === '') {
+ return null;
+ } else {
+ return self :: int( $val, $min, $max );
+ }
+ }
+
+ /**
+ * Given a date string, validate to see if it's an acceptable type. If
+ * not, return an acceptable one.
+ * @param string $val User inputed date
+ * @return string
+ */
+ public static function dateFormat( $val ) {
+ global $wgLang, $wgContLang;
+ if ( $val !== false && (
+ in_array( $val, (array)$wgLang->getDatePreferences() ) ||
+ in_array( $val, (array)$wgContLang->getDatePreferences() ) ) )
+ {
+ return $val;
+ } else {
+ return $wgLang->getDefaultDateFormat();
+ }
+ }
+
+ /**
+ * Used to validate the user inputed timezone before saving it as
+ * 'timecorrection', will return '00:00' if fed bogus data.
+ * Note: It's not a 100% correct implementation timezone-wise, it will
+ * accept stuff like '14:30',
+ * @param string $s the user input
+ * @return string
+ */
+ public static function timeZone( $s ) {
+ if ( $s !== '' ) {
+ if ( strpos( $s, ':' ) ) {
+ # HH:MM
+ $array = explode( ':' , $s );
+ $hour = intval( $array[0] );
+ $minute = intval( $array[1] );
+ } else {
+ $minute = intval( $s * 60 );
+ $hour = intval( $minute / 60 );
+ $minute = abs( $minute ) % 60;
+ }
+ # Max is +14:00 and min is -12:00, see:
+ # http://en.wikipedia.org/wiki/Timezone
+ $hour = min( $hour, 14 );
+ $hour = max( $hour, -12 );
+ $minute = min( $minute, 59 );
+ $minute = max( $minute, 0 );
+ $s = sprintf( "%02d:%02d", $hour, $minute );
+ }
+ return $s;
+ }
+}