正则表达式字符串，其中空格是可选的，修剪仅遵循（

Lets say I have

可以说我有

string abc = "and TRIM$ ( 000trim) and (trim000) and  (abctrim) and Trim(trima) and  TRIM (  abc  ) and trim( A) and 0trim"

I want only the TRIM() Function to change to RTRIM() and would want the pattern to ignore the spaces if there are any and consider ( after the TRIM

我只希望TRIM（）函数更改为RTRIM（）并希望模式忽略空格（如果有）并考虑（在TRIM之后）

I am using

我在用

Regex.Replace(abc, "(?i)([^A-Za-z0-9])TRIM([^A-Za-z0-9][(])", "$1RTRIM(");

and the result for above code is

以上代码的结果是

"and RTRIM( ( 000trim) and (trim000) and (abctrim) and Trim(trimaa) and RTRIM( abc ) and trim( A) and 0trim";

“和RTRIM（（000trim）和（trim000）和（abctrim）和Trim（trimaa）和RTRIM（abc）和trim（A）和0trim”;

I would want to get output as

我希望得到输出

"and TRIM$ ( 000trim) and (trim000) and (abctrim) and RTRIM(trimaa) and RTRIM ( abc ) and RTRIM ( A) and 0trim";

“和TRIM $（000trim）和（trim000）和（abctrim）和RTRIM（trimaa）和RTRIM（abc）和RTRIM（A）和0trim”;

How can I achieve desired output?

如何实现所需的输出？

2 个解决方案

#1

Use this :

用这个：

Regex.Replace(text, @"\bTRIM(?=\s*\()", "RTRIM", RegexOptions.IgnoreCase)

The regex matches trim that is immediatly followed by 0 or more spaces(including tabs) and a opening parenthesis (. RegexOptions.IgnoreCase is self-explanatory...

正则表达式匹配修剪，紧接着是0或更多空格（包括制表符）和一个左括号（.RegexOptions.IgnoreCase是不言自明的...

EDIT: add a (?<![$%]) to make it ignore trim with leading % or $ like this :

编辑：添加一个（？<！[$％]）使其忽略修剪前导％或$像这样：

Regex.Replace(text, @"\b(?<![$%])TRIM(?=\s*\()", "RTRIM", RegexOptions.IgnoreCase)

#2

You could do a replace like this:

你可以做这样的替换：

var input = @"and TRIM$ ( 000trim) and (trim000) and  (abctrim) and Trim(trima) and  TRIM (  abc  ) and trim( A) and 0trim";
var pattern = @"(?i)\btrim(?:\s+|)(\([^)]+\))";
string res = Regex.Replace(input, pattern, "RTRIM$1");

#1