正则表达式来消除周围的某些字符不需要的空格 [英] Regex to remove unwanted spaces around certain characters

问题描述

我试图从JavaScript文件中删除一些不需要的空白，并使用C＃和正则表达式合并文件，它们被发送到客户端之前。我有一个 JavascriptHandler 处理的.js文件，它工作正常。这是我使用打包JavaScript的功能。

I'm trying to remove some unwanted whitespace from JavaScript files, and combine files using C# and Regex, before they are sent to the client. I have a JavascriptHandler to handle the .js files, which works fine. This is the function that I'm using to "pack" the JavaScript.

private string PackJs(string file)
{
    string text = System.IO.File.ReadAllText(JSFolder + file);

    //replace any combination of unwanted whitespace with a single space
    text = Regex.Replace(text, @"[\r\n\s]+", " ");

    //Can I get this to match +, =, -, etc?
    text = Regex.Replace(text, @"( [=] )", "="); 

    //more regular expressions here, when I get round to it

    return text;
}

我的第二个前pression目前将取代=与=。我想指定更多的字符和关键字，可以有从两侧取出空间。

My second expression currently will replace " = " with "=". I'd like to specify more characters and keywords that can have the spaces removed from either side.

我如何寻找这种在常规EX pression，然后向后引用，在替换字符或关键字？

How do I search for this in the regular expression, then back-reference that character or keyword in the replacement?

谢谢

推荐答案

在 [] 把你的字

var input = "c = a + b";
var result = Regex.Replace(input, @"\s([=+])\s", "$1");

结果将是： C = A + B

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