I am currently working on a exception reporting system for work. As part of the system I am Creating a way to automatically create a bug in our bug reporting system when someone creates an error report or increase the count when an error has occured more than once. To do this I created an regular expression that grabs the relative filename and line number, I used this code:
Regex regex = new Regex("^.*\\(?'filename'.*):line (?'line'[0-9].)");
Match match = regex.Match(stackTrace);
I tested the code and got an following error
parsing "^.*\(?'filename'.*):line (?'line'[0-9].)" - Too many )'s.
After googleing i found exactly nothing that would help and 2 hours after that I came up with a nasty hack, my thinking was the proble is to do with the "\\" so how about replacing all the "\" with an "`" and then using String.Replace to replace the string(see below) it worked.
Regex regex = new Regex("^.*@(?'filename'.*):line (?'line'[0-9].)");
Match match = regex.Match(stackTrace.Replace('\\', '@'));
Probably someting you want to fix Microsoft.
Your first expression has a bug. The '\' must be escaped twice - once for C# and again for regex - otherwise it literalizes your grouping-left paren. Try something like this:
ReplyDeleteRegex("^.*\\\\(?'filename'.*):line (?'line'[0-9].)")
or, to remove the need to escape '\' for C#:
Regex(@"^.*\\(?'filename'.*):line (?'line'[0-9].)")
Thank you, that was extremely valuable and interesting...I will be back again to read more on this topic.
ReplyDeleteGreetings,
ReplyDeleteI have a question for the webmaster/admin here at www.blogger.com.
Can I use some of the information from this blog post right above if I provide a backlink back to your site?
Thanks,
Charlie
Thats fine.
ReplyDelete