正則表達式匹配除兩個字符串之外的所有內容?
[英]Regular expression to match everything except two strings?
Let's say I have some logs saying:
假設我有一些日志:
s3://hello/world
s3n://hello/again
I want to get the following result:
我想得到以下結果:
hello/world
hello/again
My initial idea was ((s3n:\/\/)|(s3:\/\/)) but this, of course, selects just s3n:// and s3://. I need to negate (invert) this selection but it isn't as simple as it seems for strings (not characters).
我最初的想法是(s3n:\/\/)|(s3:\/\/))，但這當然只選擇了s3n:/和s3://。我需要否定(反轉)這個選擇，但它並不像字符串(不是字符)那樣簡單。
How would you go about inverting this selection?
你要怎么把這個選項倒轉過來呢?
2 个解决方案
#1
2
I would suggest using ^s3n?:\/\/(.*), which can be tried here. Your desired string is in the 1st capturing group.
我建議使用^ s3n ?:\ / \ /(. *),可以在這里嘗試。你想要的字符串在第1捕獲組。
Explanation:
解釋:
- ^ - Matches the start of the string.
- ^ -匹配字符串的開始。
- s3n? - Matches "s3" followed by an optional "n".
- s3n嗎?-匹配“s3”，后跟一個可選的“n”。
- :\/\/ - Matches a colon and two forward slashes.
- :\/\/ -匹配一個冒號和兩個向前斜線。
- (.*) - Matches and captures the rest of the string.
- (.*)-匹配並捕獲字符串的其余部分。
#2
0
You need to catch what comes after the semicolon with a catch group (parentheses). To avoid catching the "s3n" itself, you can add a ?: in the beginning of that group.
您需要用catch組(括號)捕獲分號后面的內容。為了避免捕獲“s3n”本身，您可以在該組的開頭添加一個?:。
(?:s3n:\/\/|s3:\/\/)(.*)
https://www.phpliveregex.com/p/oak
https://www.phpliveregex.com/p/oak
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