如何在同一个正则表达式中使用捕获的组 [英] How can I use the captured group in the same regex

问题描述

mFoo = foo;
mBar = bar;
// convert to
this.foo = foo;
this.bar = bar;

如何使用正则表达式来处理这种替换?请帮忙.下面是我在Android Studio(IntelliJ IDEA)中使用的方法Edit ->查找 ->在路径中替换

How to use a regex to handle this substitution? Please help. Here is the method I used in Android Studio (IntelliJ IDEA) Edit -> Find -> Replace in Path

Text to find: m([A-Z])([A-Za-z0-9]+) = L$1$2
Replace with: this\.L$1$2 = L$1$2

更新

L 是一个错字.它应该是 \L 根据 JetBrains 的文档

L above is a typo. It should be \L according to JetBrains' document

推荐答案

您可以使用带有反向引用的模式并将="之后的最后一个词分组:

You can use a pattern with back-reference and grouping the last words after "=":

要查找的文本:

m([A-Z])([A-Za-z0-9]+) = (L\1\2)

m([A-Z])([A-Za-z0-9]+) = (L\1\2)

替换为:

this.L$1$2 = $3

this.L$1$2 = $3

在您发表评论后，我了解到您对小写/大写字符也有问题.所以试试这个模式(我也简化了正则表达式):

After your comments, I understand that you have also problems with lowercase/uppercase characters. So try this pattern (I have also simplified the regex):

m(\p{Alpha})(\w+) = (((?i)\1)\2)

和这个替换字符串:

this\.L$1$2 = $3

因此，对于带有输入文本的示例:

So with your example with an input text:

mContext = context

你得到这个:

this.LContext = context

我不知道在您的文本/替换字符串中指定的L"是您的拼写错误还是其他错误，但如果是这样，您可以通过以下方式更改替换字符串":

I don't know if "L" specified in your text/replace string is your typo error or other but if it's so you can change the "replace string" in the following way:

this\.$3 = $3

所以你可以得到这个:

this.context = context

如果这对您有帮助，请告诉我！

Let me know if this help you!

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