Remove all instances of the word "iff"

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

diff --git a/includes/IP.php b/includes/IP.php
index 1e0a4f9..73834a5 100644 (file)
--- a/includes/IP.php
+++ b/includes/IP.php
@@ -39,18 +39,11 @@ define( 'RE_IPV6_ADD',
                ':(?::|(?::' . RE_IPV6_WORD . '){1,7})' .
        '|' . // ends with "::" (except "::")
                RE_IPV6_WORD . '(?::' . RE_IPV6_WORD . '){0,6}::' .
-       '|' . // contains one "::" in the middle, ending in "::WORD"
-               RE_IPV6_WORD . '(?::' . RE_IPV6_WORD . '){0,5}' . '::' . RE_IPV6_WORD .
-       '|' . // contains one "::" in the middle, not ending in "::WORD" (regex for PCRE 4.0+)
-               RE_IPV6_WORD . '(?::(?P<abn>:(?P<iabn>))?' . RE_IPV6_WORD . '(?!:(?P=abn))){1,5}' .
-                       ':' . RE_IPV6_WORD . '(?P=iabn)' .
-               // NOTE: (?!(?P=abn)) fails iff "::" used twice; (?P=iabn) passes iff a "::" was found.
+       '|' . // contains one "::" in the middle (the ^ makes the test fail if none found)
+               RE_IPV6_WORD . '(?::((?(-1)|:))?' . RE_IPV6_WORD . '){1,6}(?(-2)|^)' .
        '|' . // contains no "::"
                RE_IPV6_WORD . '(?::' . RE_IPV6_WORD . '){7}' .
        ')'
-       // NOTE: With PCRE 7.2+, we can combine the two '"::" in the middle' cases into:
-       //              RE_IPV6_WORD . '(?::((?(-1)|:))?' . RE_IPV6_WORD . '){1,6}(?(-2)|^)'
-       // This also improves regex concatenation by using relative references.
 );
 // An IPv6 block is an IP address and a prefix (d1 to d128)
 define( 'RE_IPV6_BLOCK', RE_IPV6_ADD . '\/' . RE_IPV6_PREFIX );
@@ -212,7 +205,7 @@ class IP {
                                        $longest = $match;
                                        $longestPos = $pos;
                                }
-                               $offset += ( $pos + strlen( $match ) ); // advance
+                               $offset = ( $pos + strlen( $match ) ); // advance
                        }
                        if ( $longest !== false ) {
                                // Replace this portion of the string with the '::' abbreviation
@@ -492,6 +485,11 @@ class IP {
                        $n = ip2long( $ip );
                        if ( $n < 0 ) {
                                $n += pow( 2, 32 );
+                               # On 32-bit platforms (and on Windows), 2^32 does not fit into an int,
+                               # so $n becomes a float. We convert it to string instead.
+                               if ( is_float( $n ) ) {
+                                       $n = (string)$n;
+                               }
                        }
                }
                return $n;