Question

字符串看起来像

最大利用率

A Borrower (or the Parent) may not deliver a Utilisation Request if as a result of the proposed Utilisation:<br/>
[10] or more Term Loans [(other than Incremental Company Loans)] would be outstanding; [or]<br/>
[15] or more Revolving Company Utilisations would be outstanding[; or<br/>
[20] or more Incremental Company Loans would be outstanding].<br/>
A Borrower (or the Parent) may not request that a Company A Loan [or an Incremental Company Loan] be divided if, as a result of the proposed division, [  25      ] or more Company A Loans [or [  50    ] or more Incremental Company Loans] would be outstanding.<br/>
[A Borrower (or the Parent) may not request that a Company B Loan or a Company C Loan be divided.]

预期输出：

[ 10 ] or more Term Loans [(other than Incremental Company Loans)] would be outstanding; 
[ 15 ] or more Revolving Company Utilisations would be outstanding[; or
[ 20 ] or more Incremental Company Loans would be outstanding].

我正在尝试的东西似乎不起作用

Regex = '.*other than Incremental Company Loans.*'

这将返回整个段落。可能还有其他方法，但是我们只能使用REGEX来做到这一点。

Answer 1

纯正则表达式方法可能不够用，因为您可能想用换行符进一步替换 ，而且模式很复杂：

(?<=^|<br/>)(?:(?!<br/>).)*other than Incremental Company Loans[\s\S]*?(?=[.;]<br/>|$)

请参见regex demo

它匹配：

(?<=^| )-以字符串或 子字符串开头的位置
(?:(?! ).)*-出现0个以上的字符，但不以 子字符串开头
other than Incremental Company Loans-搜索字符串
[\s\S]*?-任意0个以上的字符，尽可能少
(?=[.;] |$)-紧跟着.或;紧跟着 或字符串结尾。

在用C＃编写代码时，您可以使用易于理解且易于调整的non-regex solution：

var s = "A Borrower (or the Parent) may not deliver a Utilisation Request if as a result of the proposed Utilisation:<br/>[10] or more Term Loans [(other than Incremental Company Loans)] would be outstanding; [or]<br/>[15] or more Revolving Company Utilisations would be outstanding[; or<br/>[20] or more Incremental Company Loans would be outstanding].<br/>A Borrower (or the Parent) may not request that a Company A Loan [or an Incremental Company Loan] be divided if, as a result of the proposed division, [  25      ] or more Company A Loans [or [  50    ] or more Incremental Company Loans] would be outstanding.<br/>[A Borrower (or the Parent) may not request that a Company B Loan or a Company C Loan be divided.]";
var result = s.Split(new[] {"<br/>"}, StringSplitOptions.None)
    .SkipWhile(x => !x.Contains("other than Incremental Company Loans"))
    .MagicTakeWhile(x => !x.EndsWith(".") && !x.EndsWith(";"));
Console.WriteLine(string.Join("\n", result));

输出：

[10] or more Term Loans [(other than Incremental Company Loans)] would be outstanding; [or]
[15] or more Revolving Company Utilisations would be outstanding[; or
[20] or more Incremental Company Loans would be outstanding].

从TakeWhile, but get the element that stopped it also借用了MagicTakeWhile方法。直到满足条件为止，它需要物品，其中最后一个条件不再满足。

使用正则表达式提取在其中找到了searchkeyword的字符串的一部分

1 个答案: