解析日志条目的正则表达式是什么

Question

This question is different from the "normal" parse new lines in a string because this question uses three different regular expression strings to parse a single line of text... which may or may not have multiple lines

I have the following log entries and would like to have a regular expression that parses both of them... currently it only parses the first line.

Here are the log entries

NOTE: the second log entry has a hard return ("\\r\\n") in it

[2018-05-25 08:23:54.6040][Manager.Calls.Manager][GetManagerID]
[2018-05-25 08:23:54.6040][Manager.Calls.Manager][Status as of 5/25/2018 8:23:54 AM
Expires 1/1/0001 12:00:00 AM]

Here is the regular expression that I am currently using:

(\[\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{4}\])\[(.*?)\]\[(.*?)\]

I think I need something to get the "\\r\\n" line endings...

Here is how I am calling Regex

match = Regex.Match(logEntryText, pattern, RegexOptions.Compiled | RegexOptions.Multiline);

More info:

I tried this for the last reg expression

\[(.*?)(\n|\r|\r\n)\]

but it too fails

Answer 1

I think that you could benefit from some preprocessing for your data before performing the parsing operation. For example, check if the log line ends with ] , and if it doesn't, append the next line to it; then process the resulting complete log entry.

Edit: I was assuming that you have just a list of lines (eg from a text file). If what you have instead is a list of log entries which sometimes include the hard return, then just remove it before processing: logEntry.Replace("\\r\\n","") .