regex - 如何捕获所有内容直到另一个捕获组

Question

我有以下模板:

1251 Left Random Text I want to fill  
It can go through multiple lines  
As you can see  
9841 Right Again we see a lot of random text with 3115 numbers  
And this also goes  
To multiple lines  
0121 Right    
5151 Right This one is just one line  
I was wrong  
9731 Left This one is just a line  
5123 NA Instruction 5151 was wrong  
4113 Right Instr 9841 was correct  
We checked  

---

我想要 3 个组:

1251  

Left  

Random Text I want to fill  
It can go through multiple lines  
As you can see  

我在用

(\d+)\s(\w+)\s(.*)  

但它只停在当前行(所以我只得到第 3 组中的 Random Text I want to fill，尽管我想包括 As you can see)< br/>如果我使用单行标志，我每组只有 1 个匹配项，第 3 组几乎全部匹配

现场直播:https://regex101.com/r/W3x0mH/4

Answer 1

您可以使用匹配所有行的重复组，同时断言下一行不是以 1+ 位数字开头，后跟左或右:

(\d+)\s(\w+)\s(.*(?:\r?\n(?!\d).*)*)

解释

• (\d+)\s(\w+)\s匹配前2组
• (第三个捕获组
  • .* 匹配除换行符之外的任何字符 0 次以上
  • (?: 非捕获组\r?\n(?!\d).* 匹配换行符，断言右边不是数字
  • )* 关闭非捕获组并重复0+次
• ) 关闭捕获组

Regex demo