powershell 正则表达式匹配特定字符串 w/o 起始特殊字符

Question

我有一个已与正则表达式匹配的字符串，但同一个字符串被前面的 # 符号注释掉，并且正则表达式继续匹配它，这是我不想要的。

我的正则表达式

BLTY:\w{8}:\w{8}:\w{5}\.\w{7}\.\w{1}\.\w{3}\/\w{3}\/.*\(\w{4}\)

字符串

BLTY:ENCQ0000:SERVER:TEMP.PPMQ8FE.Y.323/TCP/gtg23.dev.pmt.com(3213)-> only match this
#BLTY:ENCQ0000:SERVER:TEMP.PPMQ8FE.Y.323/TCP/gtg23.dev.pmt.com(3213) -> I dont want to match this

尝试过

^[BLTY:\w{8}:\w{8}:\w{5}\.\w{7}\.\w{1}\.\w{3}\/\w{3}\/.*\(\w{4}\)]

^BLTY:\w{8}:\w{8}:\w{5}\.\w{7}\.\w{1}\.\w{3}\/\w{3}\/.*\(\w{4}\)

(?!#)BLTY:\w{8}:\w{8}:\w{5}\.\w{7}\.\w{1}\.\w{3}\/\w{3}\/.*\(\w{4}\)

此外，如果有更少的 verbose/optimized 编写此正则表达式的方式，我很乐意听到

Answer 1

无需使用前瞻：

^BLTY(?::\w+){3}(?:\.\w+){3}/.*\(\d+\)$

参见regex proof。

解释

--------------------------------------------------------------------------------
  ^                        the beginning of the string
--------------------------------------------------------------------------------
  BLTY                     'BLTY'
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (3 times):
--------------------------------------------------------------------------------
    :                        ':'
--------------------------------------------------------------------------------
    \w+                      word characters (a-z, A-Z, 0-9, _) (1 or
                             more times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
  ){3}                     end of grouping
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (3 times):
--------------------------------------------------------------------------------
    \.                       '.'
--------------------------------------------------------------------------------
    \w+                      word characters (a-z, A-Z, 0-9, _) (1 or
                             more times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
  ){3}                     end of grouping
--------------------------------------------------------------------------------
  /                        '/'
--------------------------------------------------------------------------------
  .*                       any character except \n (0 or more times
                           (matching the most amount possible))
--------------------------------------------------------------------------------
  \(                       '('
--------------------------------------------------------------------------------
  \d+                      digits (0-9) (1 or more times (matching
                           the most amount possible))
--------------------------------------------------------------------------------
  \)                       ')'
--------------------------------------------------------------------------------
  $                        before an optional \n, and the end of the
                           string

powershell 正则表达式匹配特定字符串 w/o 起始特殊字符

powershell regex match specific string w/o starting special character

regex

powershell

regex-negation