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| From | glen herrmannsfeldt <gah@ugcs.caltech.edu> |
| Newsgroups | comp.compilers |
| Subject | Inverse grep |
| Date | Wed, 8 Jun 2011 23:01:57 +0000 (UTC) |
| Organization | A noiseless patient Spider |
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| Keywords | question, comment |
| Posted-Date | 11 Jun 2011 13:53:14 EDT |
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I suppose this is a strange question, but I was wondering if there was ever something like an inverse grep. That is, match a string against a file full of regular expressions. Now, one could just read the file, compile the regex one at a time, and do the match, but maybe there is another way. -- glen [If you want to know which pattern it was, there's flex which turns all the patterns into one DFA with tags to know which one it was, or else there's the perl "study" operator which pre-scans a string to make its NFA matcher faster on subsequent runs against the same string. -John]
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Inverse grep glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2011-06-08 23:01 +0000
Re: Inverse grep Chris F Clark <cfc@shell01.TheWorld.com> - 2011-06-12 14:16 -0400
Re: Inverse grep Tony Finch <dot@dotat.at> - 2011-06-13 17:48 +0100
Re: Inverse grep torbenm@diku.dk (Torben Ægidius Mogensen) - 2011-06-14 11:16 +0200
Re: Inverse grep anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2011-06-15 12:28 +0000
Matching very large patterns, was Re: Inverse grep Chris F Clark <cfc@shell01.TheWorld.com> - 2011-06-19 21:45 -0400
Re: Matching very large patterns, was Re: Inverse grep glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2011-06-20 04:52 +0000
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