define( 'RE_IPV6_WORD', '([0-9A-Fa-f]{1,4})' );
define( 'RE_IPV6_PREFIX', '(12[0-8]|1[01][0-9]|[1-9]?\d)');
define( 'RE_IPV6_ADD',
- '(?:' . // starts with "::" (includes the address "::")
- '::|:(?::' . RE_IPV6_WORD . '){1,7}' .
- '|' . // ends with "::" (not including the address "::")
+ '(?:' . // starts with "::" (including "::")
+ ':(?::|(?::' . RE_IPV6_WORD . '){1,7})' .
+ '|' . // ends with "::" (except "::")
RE_IPV6_WORD . '(?::' . RE_IPV6_WORD . '){0,6}::' .
- '|' . // has no "::"
+ '|' . // contains no "::"
RE_IPV6_WORD . '(?::' . RE_IPV6_WORD . '){7}' .
- '|' . // contains one "::" in the middle (awkward regex for PCRE 4.0+ compatibility)
- RE_IPV6_WORD . '(?::(?!(?P=abn))(?P<abn>:(?P<iabn>))?' . RE_IPV6_WORD . '){1,6}(?P=iabn)' .
+ '|' . // contains one "::" in the middle and 2 words
+ RE_IPV6_WORD . '::' . RE_IPV6_WORD .
+ '|' . // contains one "::" in the middle and 3+ words (awkward 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.
-
- // Better regexp (PCRE 7.2+ only), allows intuitive regex concatenation
+ // RegExp (PCRE 7.2+ only) for last 2 cases that allows easy regex concatenation:
#RE_IPV6_WORD . '(?::((?(-1)|:))?' . RE_IPV6_WORD . '){1,6}(?(-2)|^)' .
')'
);
public function testisIPv6() {
$this->assertFalse( IP::isIPv6( ':fc:100::' ), 'IPv6 starting with lone ":"' );
$this->assertFalse( IP::isIPv6( 'fc:100:::' ), 'IPv6 ending with a ":::"' );
+ $this->assertFalse( IP::isIPv6( 'fc:300' ), 'IPv6 with only 2 words' );
$this->assertFalse( IP::isIPv6( 'fc:100:300' ), 'IPv6 with only 3 words' );
$this->assertTrue( IP::isIPv6( 'fc:100::' ) );
$this->assertTrue( IP::isIPv6( 'fc:100:a::' ) );
$this->assertFalse( IP::isIPv6( ':fc::100' ), 'IPv6 starting with lone ":"' );
$this->assertFalse( IP::isIPv6( 'fc::100:' ), 'IPv6 ending with lone ":"' );
$this->assertFalse( IP::isIPv6( 'fc:::100' ), 'IPv6 with ":::" in the middle' );
- $this->assertTrue( IP::isIPv6( 'fc::100' ) );
- $this->assertTrue( IP::isIPv6( 'fc::100:a' ) );
- $this->assertTrue( IP::isIPv6( 'fc::100:a:d' ) );
- $this->assertTrue( IP::isIPv6( 'fc::100:a:d:1' ) );
- $this->assertTrue( IP::isIPv6( 'fc::100:a:d:1:e' ) );
- $this->assertTrue( IP::isIPv6( 'fc::100:a:d:1:e:ac' ) );
+ $this->assertTrue( IP::isIPv6( 'fc::100' ), 'IPv6 with "::" and 2 words' );
+ $this->assertTrue( IP::isIPv6( 'fc::100:a' ), 'IPv6 with "::" and 3 words' );
+ $this->assertTrue( IP::isIPv6( 'fc::100:a:d', 'IPv6 with "::" and 4 words' ) );
+ $this->assertTrue( IP::isIPv6( 'fc::100:a:d:1' ), 'IPv6 with "::" and 5 words' );
+ $this->assertTrue( IP::isIPv6( 'fc::100:a:d:1:e' ), 'IPv6 with "::" and 6 words' );
+ $this->assertTrue( IP::isIPv6( 'fc::100:a:d:1:e:ac' ), 'IPv6 with "::" and 7 words' );
$this->assertFalse( IP::isIPv6( 'fc::100:a:d:1:e:ac:0' ), 'IPv6 with "::" and 8 words' );
$this->assertFalse( IP::isIPv6( 'fc::100:a:d:1:e:ac:0:1' ), 'IPv6 with 9 words' );