正则表达式的文字描述

Question

是否有一些函数/算法来创建regexp的文本描述？例如

• ([a-z]+) - ＆gt; “仅限小写字母”
• ([0-9]{1,40}) - ＆gt; “仅限1到40位数字”
• ([a-z])([0-9]{5}) - ＆gt; “小写字母后跟5位数”

等

Answer 1

我爱RegExBuddy。

对于上面([a-z]+)的例子，它给出了

Match the regular expression below and capture its match into backreference number 1 «([a-z]+)»
   Match a single character in the range between “a” and “z” «[a-z]+»
      Between one and unlimited times, as many times as possible, giving back as needed (greedy) «+»
Match the character “ ” literally « »

和

([a-z])([0-9]{5})

它解释为

Match the regular expression below and capture its match into backreference number 1 «([a-z])»
   Match a single character in the range between “a” and “z” «[a-z]»
Match the regular expression below and capture its match into backreference number 2 «([0-9]{5})»
   Match a single character in the range between “0” and “9” «[0-9]{5}»
      Exactly 5 times «{5}»

我觉得测试/创建RegExes非常棒。