Revert r49669, r49670 "extract text layer from djvu file (see bug 18046)"

[lhc/web/wiklou.git] / includes / IP.php

diff --git a/includes/IP.php b/includes/IP.php
index b9dfb73..a208542 100644 (file)
--- a/includes/IP.php
+++ b/includes/IP.php
@@ -150,13 +150,24 @@ class IP {
                $ip_oct = preg_replace( '/(^|:)0+' . RE_IPV6_WORD . '/', '$1$2', $ip_oct );
                return $ip_oct;
        }
+
+       /**
+        * Convert an IPv4 or IPv6 hexadecimal representation back to readable format
+        */
+       public static function formatHex( $hex ) {
+               if ( substr( $hex, 0, 3 ) == 'v6-' ) {
+                       return self::hexToOctet( $hex );
+               } else {
+                       return self::hexToQuad( $hex );
+               }
+       }
        
        /**
-        * Given an unsigned integer, returns an IPv6 address in octet notation
+        * Given a hexadecimal number, returns to an IPv6 address in octet notation
         * @param $ip string hex IP
         * @return string
         */
-       public static function HextoOctet( $ip_hex ) {
+       public static function hextoOctet( $ip_hex ) {
                // Convert to padded uppercase hex
                $ip_hex = str_pad( strtoupper($ip_hex), 32, '0');
                // Separate into 8 octets
@@ -174,17 +185,16 @@ class IP {
         * @param $ip string Hex IP
         * @return string
         */ 
-       public static function hexToIP($ip)
-       {
+       public static function hexToQuad( $ip ) {
                // Converts a hexadecimal IP to nnn.nnn.nnn.nnn format
-               $dec = wfBaseConvert($ip, 16, 10);
-               $parts[3] = $dec % 256;
-               $dec /= 256;
-               $parts[2] = $dec % 256;
-               $dec /= 256;
-               $parts[1] = $dec % 256;
-               $parts[0] = $dec / 256;
-               return implode('.', array_reverse($parts));
+               $s = '';
+               for ( $i = 0; $i < 4; $i++ ) {
+                       if ( $s !== '' ) {
+                               $s .= '.';
+                       }
+                       $s .= base_convert( substr( $ip, $i * 2, 2 ), 16, 10 );
+               }
+               return $s;
        }
 
        /**