Regular Expression to ignore commented lines

Question

1.00/5 (1 vote)

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I am trying to create regular expression to parse a piece of code.

here is my code snipett

C#

Method1(100,variable1)

C#

@"^(?\Method1)\((?\d+),\s(?\w+)\)$"

from above expression i am extracting different data.

But i some cases there are chances to commented lines
like below

VB

Method1(100,variable1) 'method1 is called here

so how what should i add in my above regular expression to ignore strings after the ')' close bracket

Posted 31-Jan-12 22:15pm

arun_pk

Updated 31-Jan-12 22:49pm

Amir Mahfoozi

v2

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4 solutions

Solution 1

You can try the regular expression

'/\*([^*]|[\r\n]|(\*([^/]|[\r\n])))*\*/'

to ignore comments in the code

Posted 31-Jan-12 22:20pm

Ganesan Senthilvel

Updated 31-Jan-12 23:21pm

v2

Comments

arun_pk 1-Feb-12 4:26am

sorry i did not understand fully..
so end of my regular expression i should add
'/\*([^*]|[\r\n]|(\*([^/]|[\r\n])))*\*/' ???

Amir Mahfoozi 1-Feb-12 4:45am

That is for C multiline comments syntax, I think.

Solution 3

Hi,

Here's a solution:

C#

Regex.Match(objstring, @"(Method1)(\()(\d+)(\,)(\w+)(\))").Value

Posted 31-Jan-12 23:29pm

Jyothikarthik_N

Updated 31-Jan-12 23:30pm

v3

Solution 4

i used just * at the end of my expression instead of $

@"^(?\Method1)$(?\d+),\s(?\w+)$*"

Posted 7-Feb-12 22:09pm

arun_pk

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Amir Mahfoozi · Accepted Answer · 2012-01-31T23:11:00

Here it is :

C#

string pattern = @"^\s*Method1\s*\(\s*(\d+)\s*,\s*([^)]*)\)(\s*\'.*)?\s*$";
Regex regex = new Regex(pattern, RegexOptions.Multiline);

string input = "    Method1( 100, variable1)  'comm 23  ";

var matches = regex.Matches(input);
foreach (Match match in matches)
{
    Console.WriteLine(match.Value);
    foreach (Group group in match.Groups)
    {
        Console.WriteLine(" >" + group.Value);
    }
}

Groups are created by embracing parts of pattern with parentheses so manipulate groups so that fits your needs.

Hope it helps.