Regex将匹配除两个单词以外的任何内容

I'm trying to write a regular expression to match anything that isn't "foo" and "bar". I found how to match anything but one word at Regular expression to match a line that doesn't contain a word? but I'm not very skilled with regex and am unsure of how to add a second word to this critera.

我正在尝试编写一个正则表达式来匹配任何不是“foo”和“bar”的表达式。我发现如何在正则表达式中匹配除了一个词之外的任何东西，以匹配不包含一个词的行?但是我对regex不是很熟练，我不知道如何在这个critera中添加第二个单词。

Any help would be most appreciated!

非常感谢您的帮助!

CLARIFICATION:

澄清:

I wanted to match on anything that wasn't EXACTLY foo or bar.

我想要匹配任何不是foo或bar的东西。

3 个解决方案

#1

Answer to the question: "A Regular Expression to match anything that isn't "foo" and "bar"?"

回答问题:“一个正则表达式匹配任何非“foo”和“bar”的表达式?”

^(?!foo$|bar$).*

would do exactly that.

会做。

^      # Start of string
(?!    # Assert that it's impossible to match...
 foo   # foo, followed by
 $     # end of string
|      #
 bar$  # bar, followed by end of string.
)      # End of negative lookahead assertion
.*     # Now match anything

You might need to set RegexOptions.Singleline if your string can contain newlines that you also wish to match.

您可能需要设置RegexOptions。单线，如果您的字符串可以包含您也希望匹配的新行。

#2

Answer to the question: "How to add a second word to this critera?"

回答问题:“如何在这个critera中增加第二个单词?”

The answer of the question you link to is:

你链接到的问题的答案是:

^((?!word).)*$

Where (?!word) is a negative look-ahead. The answer for this question is:

哪里(?!)是一个消极的展望。这个问题的答案是:

^((?!wordone|wordtwo).)*$

Works for both words. Note: you should enable the global and multiline options, if you have multiple lines and want to match for each line, as the other question.

这两个单词。注意:您应该启用全局和多行选项，如果您有多个行，并且希望匹配每一行，这是另一个问题。

The difference is the negative look-ahead clause: (?!wordone|wordtwo). It can be extended to any (reasonable) amount of words or clauses.

不同之处在于消极的前瞻子句:(?!wordone|wordtwo)。它可以扩展到任何(合理的)字数或从句。

See this answer for a detailed explanation.

有关详细解释，请参见此答案。

#3

I get what you want to do, but the specifics of what you want to block/allow are a little unclear. For example, do you want to block anything that isn't exactly foo or bar? Or do you want to block anything containing those two strings?

我知道你想要做什么，但是你想要阻止/允许的细节有点不清楚。例如，您想要阻止任何不完全是foo或bar的东西吗?或者你想要阻止任何包含这两个字符串的东西吗?

Can they be part of another string, as in @Tim's foonly or bartender examples?

它们可以是另一个字符串的一部分吗，就像@Tim的foonly或调酒师的例子一样?

I'm just going to suggest patterns for each one:

我将为每一个人建议模式:

/^(?!foo$|bar$).*/   #credit to @Tim Pietzcker for this one, he did it first
    #blocks "foo"
    #blocks "bar"
    #allows "hello goodbye"
    #allows "hello foo goodbye"
    #allows "foogle"
    #allows "foobar"

/^(?!.*foo|.*bar).*$/
    #blocks "foo"
    #blocks "bar"
    #allows "hello goodbye"
    #blocks "hello foo goodbye"
    #blocks "foogle"
    #blocks "foobar"

/^(?!.*\b(foo|bar)\b).*$/
    #blocks "foo"
    #blocks "bar"
    #allows "hello goodbye"
    #blocks "hello foo goodbye"
    #allows "foogle"
    #allows "foobar"

#1