Regex选项或匹配

Question

有没有办法做可选或可选的？我想将这些接口作为group1的一部分进行匹配。

interface GigabitEthernet3/11
interface GigabitEthernet2/2
interface GigabitEthernet2/3

text is here:

interface GigabitEthernet2/1
 description test
 switchport access vlan 102
 switchport mode access
 switchport voice vlan 202
 no logging event link-status
 no logging event power-inline-status
 no snmp trap link-status
 spanning-tree portfast edge
 spanning-tree guard root
!
interface GigabitEthernet2/4
 description User
 switchport access vlan 102
 switchport mode access
 no logging event link-status
 no logging event power-inline-status
 no snmp trap link-status
 spanning-tree portfast edge
 spanning-tree guard root
!
interface GigabitEthernet2/4
 description User
 switchport access vlan 102
 no logging event link-status
 no logging event power-inline-status
 no snmp trap link-status
 spanning-tree portfast edge
 spanning-tree guard root
!
interface GigabitEthernet3/11
 switchport trunk allowed vlan 102,202
 switchport trunk native vlan 102
 switchport mode access
 switchport voice vlan 202
 spanning-tree portfast edge trunk
 spanning-tree guard root
!
interface GigabitEthernet2/2
 description User
 switchport mode access
 no logging event link-status
 no logging event power-inline-status
 no snmp trap link-status
 spanning-tree portfast edge
 spanning-tree guard root
!
interface GigabitEthernet2/3
 switchport voice vlan 202
 no logging event link-status
 no logging event power-inline-status
 no snmp trap link-status
 spanning-tree portfast edge
 spanning-tree guard root
!

我的正则表达式：

(interface [A-Za-z]+\d\/\S+)\n(?:^\s.*|\n)*(switchport access vlan\s(\d+))|(switchport mode access)|(switchport voice vlan.*)

regex101

Answer 1

如果你只是在寻找一种方法来捕获所有的“交换端口”

在单个接口记录中，下面只添加不同的接口记录

交替(如你所说的)。

只需根据需要添加更多或开关端口项即可。

以下内容恰好是以一种无序的方式获取所有相关项目的。

这也将考虑到任何交织，如果它发生。

(?im)^(interface[ ][A-Za-z\d]+\/\S+)(?:\s*(?:^(?!(?:interface|!)).*\s+)*?[ \t]+(?:(switchport[ \t]+access[ \t]+vlan[ \t]+(\d+))|(switchport[ \t]+voice[ \t]+vlan)|(switchport[ \t]+mode[ \t]+access)).*)*

https://regex101.com/r/rjzC4y/1

 (?im)
 ^ 
 ( interface [ ] [A-Za-z\d]+ \/ \S+ )                  # (1)
 (?:
    \s* 
    (?:
       ^ 
       (?!
          (?: interface | ! )
       )
       .* \s+ 
    )*?
    [ \t]+ 
    (?:
       (                                               # (2 start)
          switchport [ \t]+ access [ \t]+ vlan [ \t]+ 
          ( \d+ )                                      # (3)
       )                                               # (2 end)
     | ( switchport [ \t]+ voice [ \t]+ vlan )         # (4)
     | ( switchport [ \t]+ mode [ \t]+ access )        # (5)
       
       # Add more switchport types here
       
    )
    .* 
 )*