Regex根据第一个正斜杠之前的字符串排除匹配项

Question

我希望从匹配的中排除任何指向扩展名为".log"的文件或包含目录"tmp"的路径的路径字符串

我快到了：

(?!tmp).+?.(?!log|tmp).+

http://rubular.com/r/Ubkz7MIEGH

我想要的是

tmp/hello.jpg

以与相同的方式排除

hello.log
hmm.tmp

被排除在外。

Answer 1

只需尝试以下正则表达式：

^(?!(?:.*log$)|tmp).*$

Answer 2

怎么样：

^(?!.*btmpb)(?!.+.logb)(.+)$

解释：

The regular expression:
(?-imsx:^(?!.*btmpb)(?!.+.logb)(.+)$)
matches as follows:
NODE                     EXPLANATION
----------------------------------------------------------------------
(?-imsx:                 group, but do not capture (case-sensitive)
                         (with ^ and $ matching normally) (with . not
                         matching n) (matching whitespace and #
                         normally):
----------------------------------------------------------------------
  ^                        the beginning of the string
----------------------------------------------------------------------
  (?!                      look ahead to see if there is not:
----------------------------------------------------------------------
    .*                       any character except n (0 or more times
                             (matching the most amount possible))
----------------------------------------------------------------------
    b                       the boundary between a word char (w)
                             and something that is not a word char
----------------------------------------------------------------------
    tmp                      'tmp'
----------------------------------------------------------------------
    b                       the boundary between a word char (w)
                             and something that is not a word char
----------------------------------------------------------------------
  )                        end of look-ahead
----------------------------------------------------------------------
  (?!                      look ahead to see if there is not:
----------------------------------------------------------------------
    .+                       any character except n (1 or more times
                             (matching the most amount possible))
----------------------------------------------------------------------
    .                       '.'
----------------------------------------------------------------------
    log                      'log'
----------------------------------------------------------------------
    b                       the boundary between a word char (w)
                             and something that is not a word char
----------------------------------------------------------------------
  )                        end of look-ahead
----------------------------------------------------------------------
  (                        group and capture to 1:
----------------------------------------------------------------------
    .+                       any character except n (1 or more times
                             (matching the most amount possible))
----------------------------------------------------------------------
  )                        end of 1
----------------------------------------------------------------------
  $                        before an optional n, and the end of the
                           string
----------------------------------------------------------------------
)                        end of grouping
----------------------------------------------------------------------

Answer 3

^(?!tmp).*(?<!.tmp|log)$

这只是一个消极的背后。实时演示