Regex for unknown number of lines - Assistance Request

Brett

I am trying to parse a log file using regular expressions and I ran into a challenge. The section of the log file has a distinct beginning and a distinct end, but the number of lines in between might vary.

Is there a way I can use regular expressions to pull the beginning of the section, the end of the section and everything in between regardless of the number of lines and or characters?

Here is an example of what I am trying to parse out:

******* script runtime error *******
type undefined is not a vector: (file 'k3/_laserguided.gsc', line 120)
playfx(level.fx_guided_exp,trace["position"]); //,trace["normal"]); // SOMETIMES IT PLAYS WRONG DIR o_O
*
Error: started from:
(file 'k3/_laserguided.gsc', line 91)
wait 0.05;
*
Error: ************************************

In some cases, there are more than one errors listed in the body after ‘script runtime error’ and ‘Error:’

Any help would be appreciated.

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Fernando Soto18y ago
Not a problem, glad I was able to help. ;=)
Brett18y ago
Nice, thank you very much! I was missing the single line option.

Much appreciated.
Fernando Soto18y ago

Hi Brett;

This sample code should show you how to accomplish what you need.

using System.Text.RegularExpressions;

// Read the log file into a local variable
String inputData = new StreamReader("TestData.log").ReadToEnd();
// Regex pattern to look for the script runtime error case insensitive
String pattern = @"(?is)\*{7}\sscript runtime error\s\*{7}.*?Error:\s\*{1,}";
// Locate the text
MatchCollection mc = Regex.Matches(inputData, pattern)

// Display all the matches
foreach (Match m in mc)
{
MessageBox.Show(m.Value);
}

Fernando