regexcapturing-group
Regex, how to match string into two groups without excluding the first line
I tried using (?P<Time>.+)\,\s(?P<Station>.+), but it did not capture the first line.
The sample strings aree:
9:21:13 AM
9:21:29 AM, TS729
9:21:33 AM, TS729
Tested at regex101.com:
Solution
You can use
^(?P<Time>[^,]+)(?:,\s*(?P<Station>.+))?$
See the regex demo (switch to Unit Tests, the link is in the left pane).
Details:
^- start of string(?P<Time>[^,]+)-Timegroup: any one or more chars other than a comma(?:,\s*(?P<Station>.+))?- an optional sequence of,- a comma\s*- zero or more whitespaces(?P<Station>.+)- one or more chars other than line break chars captured into Group "Station"
$- end of string.
Unit tests screenshot:
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