Re: GREP Help
This WebDNA talk-list message is from 2001
It keeps the original formatting.
numero = 36601
interpreted = N
texte = Richard Kirsner wrote: > > We're having some fun with GREP in WebCat 4.X. Actually, when it works, > it's really useful and a big timesaver. But we're having some problems with > the following GREP statement. The idea is to take each line that ends > with a > : and change the style on that line only. > > [unurl][Grep search=(^[A-Z].*[%][3][A])&replace=
class=smTxtBldSansBlu>\1][url][convertchars][FEAPICTTEXT1][/convert > chars][/url][/Grep][/unurl] > > This is the sample text from the a field in the database that we're > trying to modify: > > This is a New Feature: > This text describes the features. > Isn't it a fine set of features. > > This is Second Feature: > This text describes the features. > Isn't it a fine set of features. > > The grep statement is matching all text through the second :, and changing > the style, which we don't want. In this application, the user enters a lot > of text into one field of the database and we want to parse out the > delimited elements. > > What we need is it to match the first line in each para that ends with a > :. > > Any suggestions? > > BTW: anyone found a good GREP reference online? Especially syntax for the > REPLACE actions? > > Richard KirsnerFirst things first, http://www.oreilly.com/catalog/regex/ is the best general book on regular expressions that I am aware of.Secondly, grep is [typically] a line oriented function, not a block (paragraph) oriented function. That is not to say you cannot use it on multiline blocks, just that it is much harder to get everything correct.The asterisk (*) character is [typically] a greedy match. Try with plus (+) and see if that does what you want. I don't know exactly where PCS/SMSI got their grep library; it certainly doesn't see to be comparable to recent GNU grep's and it doesn't include any of the extended Perl grep functionality.HTHJohn -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4720 Boston Way Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5747------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
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Associated Messages, from the most recent to the oldest:
Richard Kirsner wrote: > > We're having some fun with GREP in WebCat 4.X. Actually, when it works, > it's really useful and a big timesaver. But we're having some problems with > the following GREP statement. The idea is to take each line that ends > with a > : and change the style on that line only. > > [unurl][Grep search=(^[A-Z].*[%][3][A])&replace= class=smTxtBldSansBlu>\1][url][convertchars][FEAPICTTEXT1][/convert > chars][/url][/Grep][/unurl] > > This is the sample text from the a field in the database that we're > trying to modify: > > This is a New Feature: > This text describes the features. > Isn't it a fine set of features. > > This is Second Feature: > This text describes the features. > Isn't it a fine set of features. > > The grep statement is matching all text through the second :, and changing > the style, which we don't want. In this application, the user enters a lot > of text into one field of the database and we want to parse out the > delimited elements. > > What we need is it to match the first line in each para that ends with a > :. > > Any suggestions? > > BTW: anyone found a good GREP reference online? Especially syntax for the > REPLACE actions? > > Richard KirsnerFirst things first, http://www.oreilly.com/catalog/regex/ is the best general book on regular expressions that I am aware of.Secondly, grep is [typically] a line oriented function, not a block (paragraph) oriented function. That is not to say you cannot use it on multiline blocks, just that it is much harder to get everything correct.The asterisk (*) character is [typically] a greedy match. Try with plus (+) and see if that does what you want. I don't know exactly where PCS/SMSI got their grep library; it certainly doesn't see to be comparable to recent GNU grep's and it doesn't include any of the extended Perl grep functionality.HTHJohn -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4720 Boston Way Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5747------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://search.smithmicro.com/
John Peacock
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