用于分隔子句的键、运算符和值组的正则表达式

Question

从如下图所示的子句中获取键、运算符和值组的最佳正则表达式是什么？

到目前为止我所做的并不准确，只能得到第一组：(^.*?(=|!=)+([^.]*))

Answer 1

使用

(\w+(?:\.\w+)*)\s*(!=|=)\s*(\w+)

见proof

说明

--------------------------------------------------------------------------------
  (                        group and capture to :
--------------------------------------------------------------------------------
    \w+                      word characters (a-z, A-Z, 0-9, _) (1 or
                             more times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
    (?:                      group, but do not capture (0 or more
                             times (matching the most amount
                             possible)):
--------------------------------------------------------------------------------
      \.                       '.'
--------------------------------------------------------------------------------
      \w+                      word characters (a-z, A-Z, 0-9, _) (1
                               or more times (matching the most
                               amount possible))
--------------------------------------------------------------------------------
    )*                       end of grouping
--------------------------------------------------------------------------------
  )                        end of 
--------------------------------------------------------------------------------
  \s*                      whitespace (\n, \r, \t, \f, and " ") (0 or
                           more times (matching the most amount
                           possible))
--------------------------------------------------------------------------------
  (                        group and capture to :
--------------------------------------------------------------------------------
    !=                       '!='
--------------------------------------------------------------------------------
   |                        OR
--------------------------------------------------------------------------------
    =                        '='
--------------------------------------------------------------------------------
  )                        end of 
--------------------------------------------------------------------------------
  \s*                      whitespace (\n, \r, \t, \f, and " ") (0 or
                           more times (matching the most amount
                           possible))
--------------------------------------------------------------------------------
  (                        group and capture to :
--------------------------------------------------------------------------------
    \w+                      word characters (a-z, A-Z, 0-9, _) (1 or
                             more times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
  )                        end of

用于分隔子句的键、运算符和值组的正则表达式

Regex to separate groups of key, operator and value of a clause

regex

regex-group