正则表达式-从书名中提取卷和章号 [英] Regex - Extracting volume and chapter numbers from book titles

问题描述

嘿，
我正在尝试将一些旧数据导入一个全新的系统中，这几乎完成了，但是有一个很大的问题！假设这些数据:

Blabla Vol.1 chapter 2
ABCD in the era of XYZ volume 2 First Chapter  
A really useless book Eighth vol  
Blala Sixth Vol Chapter 5  
Lablah V6C7 2002  
FooBar Vol6 C3 by Dr. Foo Bar
Regex: A tool in Hell V1 Eleventh Chapter

困惑！！我试图编写该正则表达式来提取卷和章号，但是您知道它是正则表达式！有人可以指导我吗?

解决方案

以下是与您的示例匹配的正则表达式:

/^.+?(?|(?:\bVol.?|\bvolume[ ]+|V)(\d+)|[ ]+([a-z]+)[ ]+vol\b).?(?:(?|(?:C|chapter[ ]+)(\d+)|[ ]+([a-z]+)[ ]+Chapter\b).?)?$/im

您可以在此处实时编辑正则表达式和/或添加测试.. /p>

在此链接:
数组中的

元素[0]表示匹配数组

元素[1]卷数组

元素[2]章节数组

我假设您的示例中所述的 卷总是在 章之前.

Hey,
I'm trying to import some legacy data into a brand new system, it's almost done, but there's a huge problem! Assuming these kinda data:

Blabla Vol.1 chapter 2
ABCD in the era of XYZ volume 2 First Chapter  
A really useless book Eighth vol  
Blala Sixth Vol Chapter 5  
Lablah V6C7 2002  
FooBar Vol6 C3 by Dr. Foo Bar
Regex: A tool in Hell V1 Eleventh Chapter

Confused!! I tried to write that regex to extract volume and chapter numbers but you know it's REGEX! Can anyone please guide me through this?

解决方案

Here is a regular expression that will match your example :

/^.+?(?|(?:\bVol.?|\bvolume[ ]+|V)(\d+)|[ ]+([a-z]+)[ ]+vol\b).?(?:(?|(?:C|chapter[ ]+)(\d+)|[ ]+([a-z]+)[ ]+Chapter\b).?)?$/im

You can live edit the regex and/or add tests here.

In this link :

element [0] in the array refers to the matches array

element [1] the volumes array

element [2] the chapter array

I assumed that volumes always comes before chapters as stated in your examples.

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