C# regex struggling

Question

string text = "AT + CMGL =\"REC UNREAD\"\r\r\n+CMGL: 5,\"REC UNREAD\",\"+420733505479\",\"\",\"2015/09/08 13:38:31+08\"\r\nPrdel\r\n\r\nOK\r\n";
Regex regex = new REgex(CMGL:\s(.*?),\\"(.*?)\\",\\"(.*?)\\",\\"\\",\\"(.*?)\\"\\r\\n(.*?)\\r\\n\\r\\n);

I need output like this:

[38-39] 5
[42-52] REC UNREAD
[57-70] +420733505479
[80-102] 2015/09/08 13:38:31+08
[108-113] Prdel

I tried this expression on https://regex101.com and it seems all right but when I run my program, regex fails to find the text. I was only able to force it to find:

+CMGL: 5,

"REC UNREAD",

"+420733505479",

"",

"2015/09/08 13:38:31+08"

Prdel

I have absolutely no idea how this could happen. Could anyone help me please?

There are different flavors of regular expressions. When testing make sure you use one that specifically uses the .Net regular expression engine. Right now you're using one that only does php, javascript , and python. — juharr
– juharr, Commented Sep 8, 2015 at 13:12
Your given code seems wrong, especially this part: new REgex(CMGL:\s. could you correct it? — Sors
– Sors, Commented Sep 8, 2015 at 13:13
Yeah, you are right, it should be CMGL:\\s(.*?),\\"(.*?)\\",\\"(.*?)\\",\\"\\",\\"(.*?)\\"\\r\\n(.*?)\\r\\n\\r\\n — Jan Holešínský
– Jan Holešínský, Commented Sep 9, 2015 at 8:06

Wiktor Stribiżew · Accepted Answer · 2015-09-08 13:16:47Z

2

You can use the following regex:

CMGL: (?<num>\d+),"(?<rec>[^"]*)","(?<phone>[^"]*)","[^"]*","(?<date>[^"]*)"\s*(?<badword>.+)

See demo at the .NET-compliant regex tester

Results:

C#:

string text2 = "AT + CMGL =\"REC UNREAD\"\r\r\n+CMGL: 5,\"REC UNREAD\",\"+420733505479\",\"\",\"2015/09/08 13:38:31+08\"\r\nPrdel\r\n\r\nOK\r\n";
Regex regex2 = new Regex(@"CMGL: (?<num>\d+),""(?<rec>[^""]*)"",""(?<phone>[^""]*)"",""[^""]*"",""(?<date>[^""]*)""\s*(?<badword>.+)");
Match match2 = regex2.Match(text2);
if (match2.Success)
{
     Console.WriteLine(match2.Groups["num"].Value);
     Console.WriteLine(match2.Groups["rec"].Value);
     Console.WriteLine(match2.Groups["phone"].Value);
     Console.WriteLine(match2.Groups["date"].Value);
     Console.WriteLine(match2.Groups["badword"].Value);
 }

answered Sep 8, 2015 at 13:16

Wiktor Stribiżew

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