c# - 你能建议一个正则表达式来捕获这段文字吗？

Question

请建议一个正则表达式来从下面的输入文本中捕获它:

Match 0:"Modifications made by ... on2011/07/13 06:17:32 from database
keyword: zzzz--> mmmmmm
total_effort: --> 0.00
tmp__effort: --> 0
resolver"

Match 1:"Modifications made by ... on2011/07/13 06:19:32 from database
resolver"

输入文字:

Modifications made by... on 2011/06/21 14:09:14 from database
problem_description: (text value has changed)


Modifications made by ... on2011/07/13 06:17:32 from database
keyword: zzzz--> mmmmmm
total_effort: --> 0.00
tmp__effort: --> 0
resolver: y --> x
total_t_effort: --> 0.00

Modifications made by ... on2011/07/13 06:19:32 from database
resolver: x --> z
total_t_effort: --> 0.00

我试过使用这个 modifications\smade\sby(.|\n)+?resolver 但它给了我不正确的输出:

Match 0:"Modifications made by... on 2011/06/21 14:09:14 from database
problem_description: (text value has changed)


Modifications made by ... on2011/07/13 06:17:32 from database
keyword: zzzz--> mmmmmm
total_effort: --> 0.00
tmp__effort: --> 0
resolver"
Match 1:"Modifications made by ... on2011/07/13 06:19:32 from database
resolver"

使用的选项:IgnoreCase + MultiLine

有人可以帮忙吗？

谢谢!

Answer 1

如果你想为此使用正则表达式，它会变得有点复杂。

尝试

^modifications\smade\sby(.(?!modifications))+?resolver

查看here on Regexr

我删除了 \n 并使用了 Singleline option 代替。

想法是，匹配每个字符直到下一个“解析器”，但前提是该字符后面没有“修改”。因此，我使用了负先行 .(?!modifications)。