CODEWITHSUNDEEP
c#regex
BUlle7
BUlle7

Reputation: 161

Regex to allow some special character with unicodes

I want to allow some special characters like (,),\,_,., etc and emojis is denoted by [\u0000-\u007F]+

Valid names are

"🎊❤️\U0001f923\U0001f923😊😊🎉🎉😍😍"
"12333🎊❤️\U0001f923\U0001f923😊😊🎉🎉😍😍.txt"
"123()-213🎊❤️\U0001f923\U0001f923😊😊🎉🎉😍😍.txt"

Invalid specialcharacters should be replaced with ""

"123^&*()!@#$🎊❤️\U0001f923\U0001f923😊😊🎉🎉😍😍" should be
"123()🎊❤️\U0001f923\U0001f923😊😊🎉🎉😍😍"

This regex does it for some special characters

string filename = "12%&^%^&% \U0001f973\U0001f973.xlsx"
string output = Regex.Replace(filename, @"[^\w\s\.\\[\]()|_-]+", "");
prints "12 .xlsx"

For unicode characters (like emojis)

string output = Regex.Replace(filename, @"[\u0000-\u007F]+", "");
prints"\U0001f973\U0001f973"

While combining i want

"12 \U0001f973\U0001f973.xlsx"

I have tried Test 1

string output = Regex.Replace(filename, @"[^\w\s\.\\[\]()|_-]+|[^\u0000-\u007F]+", "");
        "12 .xlsx" // but no luck

Test 2

string output = Regex.Replace(filename, @"[^-\w\s\.\\\[\]()|_\u0000-\u007F]+", "");
     prints "";

Upvotes: 0

Views: 118

Answers (1)

Good Night Nerd Pride
Good Night Nerd Pride

Reputation: 8462

You need the "opposite" of your unicode range in order to be able to add it to your negated character class. Try:

[^\u0080-\uFFFF\w\s\.\\[\]()|_-]+

Upvotes: 1

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