如果与有效的IPv4或IPv6地址或甚至没有特殊特性但确实有特有的东道名称相匹配,是否有可能检查一个独处区,并加以验证?
我对IPv4和IPv6有单独的规定,但我如何把他们结合起来做上述工作?
提前感谢,
丹麦
您
Perl-ish example:
if ( $foo =~ /$ipv4_re/ or $foo =~ /$ipv6_re/ or $foo =~ /$hostname_re/ ) {
...
}
说到这一点后,在沙尔可能有一些图书馆会为你证明这些事情是正确的,而我个人则依靠这些图书馆。
Try:
(?:d{1,3}.){3}d{1,3}| (?# IPv4 address)
[:a-fA-F0-9]*:[:a-fA-F0-9]*:[:a-fA-F0-9.]*| (?# IPv6 address)
[-a-z0-9A-Z]+.[-a-z0-9A-Z]* (?# domain name)
当然,你可以自由地用更复杂的语言替代个人表达。
(?P<ihost>\[(?:(?:[0-9A-F]{1,4}:){6}(?:[0-9A-F]{1,4}:[0-9A-F]{1,4}|(?:(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)))|::(?:[0-9A-F]{1,4}:){5}(?:[0-9A-F]{1,4}:[0-9A-F]{1,4}|(?:(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)))|[0-9A-F]{1,4}?::(?:[0-9A-F]{1,4}:){4}(?:[0-9A-F]{1,4}:[0-9A-F]{1,4}|(?:(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)))|(?:(?:[0-9A-F]{1,4}:)?[0-9A-F]{1,4})?::(?:[0-9A-F]{1,4}:){3}(?:[0-9A-F]{1,4}:[0-9A-F]{1,4}|(?:(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)))|(?:(?:[0-9A-F]{1,4}:){,2}[0-9A-F]{1,4})?::(?:[0-9A-F]{1,4}:){2}(?:[0-9A-F]{1,4}:[0-9A-F]{1,4}|(?:(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)))|(?:(?:[0-9A-F]{1,4}:){,3}[0-9A-F]{1,4})?::(?:[0-9A-F]{1,4}:)(?:[0-9A-F]{1,4}:[0-9A-F]{1,4}|(?:(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)))|(?:(?:[0-9A-F]{1,4}:){,4}[0-9A-F]{1,4})?::(?:[0-9A-F]{1,4}:[0-9A-F]{1,4}|(?:(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)))|(?:(?:[0-9A-F]{1,4}:){,5}[0-9A-F]{1,4})?::[0-9A-F]{1,4}|(?:(?:[0-9A-F]{1,4}:){,6}[0-9A-F]{1,4})?::|v[0-9A-F]+\.(?:[a-zA-Z0-9_.~-]|[!$& ()*+,;=]|:)+)\]|(?:(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))|(?:(?:[a-zA-Z0-9._~-]|[xa0-ud7ffuf900-ufdcfufdf0-uffefU00010000-U0001fffdU00020000-U0002fffdU00030000-U0003fffdU00040000-U0004fffdU00050000-U0005fffdU00060000-U0006fffdU00070000-U0007fffdU00080000-U0008fffdU00090000-U0009fffdU000a0000-U000afffdU000b0000-U000bfffdU000c0000-U000cfffdU000d0000-U000dfffdU000e1000-U000efffd])|%[0-9A-F][0-9A-F]|[!$& ()*+,;=])*)
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