[yunqa.de] Re: DIRegEx search stream
- From: Delphi Inspiration <delphi@xxxxxxxx>
- To: yunqa@xxxxxxxxxxxxx
- Date: Tue, 16 Sep 2008 19:51:27 +0200
Craig Peterson wrote:
>Are there any plans to make an TDIRegExSearchStream-type class that uses the
>Perl algorithm?
No, this is unfortunately not possible. TDIRegExSearchStream relies on the
partial match feature of the DFA algorithm which is unavailable to the Perl
algorithm.
>On a more general-RE note: is there any easy way to tell whether a particular
>regular expression can match across lines?
Partially. You can check if coMultiline is set in TDIRegEx.CompileOptions. With
regards to the pattern itself, you can check TDIRegEx.InfoHasCrOrLf to learn if
the pattern contains contains any explicit matches for CR or LF characters.
Ralf
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