delete rows or string if it is in Comments

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Hi, i want to delete rows which has comments like "//" or "/*...*/" multile line or single line in C#

what i did is,

C#

static string StripComments(string code)
 { var re = @"(^\/\/.*?$)|(\/*.*?*\/)";
 return Regex.Replace(code, re, "$1");
 }

In a Class
string s="/*#define abcdef
            #define ghijkl*/;
             

 while (s.Contains("#define"))
 {s= StripComments(s);}

is it correct what i did? thanks

Posted 6-Jun-13 3:53am

getanswer

Updated 6-Jun-13 4:37am

ridoy

v2

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Comments

E.F. Nijboer 6-Jun-13 10:10am

create test cases and specify the result you expect and then perform those test accordingly and verify.

johannesnestler 6-Jun-13 10:37am

good advice!

Ahmed Bensaid 6-Jun-13 10:49am

Have a look there : Regex to strip line comments from C#

Maciej Los 6-Jun-13 10:56am

Please, post it as an answer ;)

Ahmed Bensaid 6-Jun-13 11:00am

Done ;)

2 solutions

Solution 2

Have a look there : Regex to strip line comments from C# ;)

Posted 6-Jun-13 5:00am

Ahmed Bensaid

Comments

Maciej Los 6-Jun-13 11:02am

+5

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Andreas Gieriet · Accepted Answer · 2013-06-06T05:00:00

You can only detect comments in a robust way if you do properly tokenize into
- tokens that can contain comment start/end character sequences (all flawours of strings, characters)
- tokens that cannot contain comment start/end character sequences (all but the above tokens and but comments)
- line comments
- block comments

You may have a look at Escaping in C#: characters, strings, string formats, keywords, identifiers[^] at the bottom, see the bonus code for tokenizing C# with Regex, including line and block comments, taking in care of the above mentioned tokens.

Cheers
Andi