Re: Grep question [parsing variables] problem
This WebDNA talk-list message is from 2003
It keeps the original formatting.
numero = 47287
interpreted = N
texte = Palle Bo Nielsen wrote: > Hi John, > > Well it should have stated... > > this is a test [b]with bold [i]and bold italic[/i] words[/b] > > My bad when I wrote the mail to the list... but it still don't work...Nor should it. You will have to replace the nested context first, or else it will not work. In general, you will be unable to use grep to manage nested search and replace; you really need to use a finite state machine to do this in a consistent way. Here's why:> > [!] -- REPLACE [b] WITH
(ignore case) text [/!] > [text]set_main_txt=[grep > search=\[[bB]\]([^[unurl]%5B[/unurl]]*)\[/[bB]\]&replace=\1 b>][text]set_main_txt[/text][/grep][/text]This part of the regex: \[[bB]\]([^[unurl]%5B[/unurl]]*)matches this part of the original text: [b]with bold [but since there isn't an immediately trailing [/b], the search fails and hence the replace never happens.You will have to do 4 searchs: 1 for each leading and trailing tag:[text]set_main_txt=[grep search=\[[bB]\]&replace=[text]set_main_txt[/text][/grep][/text] [text]set_main_txt=[grep search=\[/[bB]\]&replace=[text]set_main_txt[/text][/grep][/text][text]set_main_txt=[grep search=\[[iI]\]&replace=[text]set_main_txt[/text][/grep][/text] [text]set_main_txt=[grep search=\[/[iI]\]&replace=[text]set_main_txt[/text][/grep][/text]However, this would still not _disply_ correctly if, as you originally posted, one of the closing tags was missing (the rest of the page would be boldface).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://webdna.smithmicro.com/
Associated Messages, from the most recent to the oldest:
Palle Bo Nielsen wrote: > Hi John, > > Well it should have stated... > > this is a test [b]with bold [i]and bold italic[/i] words[/b] > > My bad when I wrote the mail to the list... but it still don't work...Nor should it. You will have to replace the nested context first, or else it will not work. In general, you will be unable to use grep to manage nested search and replace; you really need to use a finite state machine to do this in a consistent way. Here's why:> > [!] -- REPLACE [b] WITH (ignore case) text [/!] > [text]set_main_txt=[grep > search=\[[bB]\]([^[unurl]%5B[/unurl]]*)\[/[bB]\]&replace=\1 b>][text]set_main_txt[/text][/grep][/text]This part of the regex: \[[bB]\]([^[unurl]%5B[/unurl]]*)matches this part of the original text: [b]with bold [but since there isn't an immediately trailing [/b], the search fails and hence the replace never happens.You will have to do 4 searchs: 1 for each leading and trailing tag:[text]set_main_txt=[grep search=\[[bB]\]&replace=[text]set_main_txt[/text][/grep][/text] [text]set_main_txt=[grep search=\[/[bB]\]&replace=[text]set_main_txt[/text][/grep][/text][text]set_main_txt=[grep search=\[[iI]\]&replace=[text]set_main_txt[/text][/grep][/text] [text]set_main_txt=[grep search=\[/[iI]\]&replace=[text]set_main_txt[/text][/grep][/text]However, this would still not _disply_ correctly if, as you originally posted, one of the closing tags was missing (the rest of the page would be boldface).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://webdna.smithmicro.com/
John Peacock
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