I'd be more inclined to look at a solution involving manipulating the HTML structure, rather than trying a regexp-based approach, which will probably end up disappointing. (See this: http://stackoverflow.com/a/1732454/499609) I hope another Haskeller can speak to a library that would be good for this kind of purpose. To suit what you're doing now, though; if you change .*? to [\s\S]*?, it should work on multiline strings. If you can work out how to pass the 's' modifier to Text.Regexp.PCRE, that should also do it. —Arlen On Wednesday, 6 June 2012 at 3:05 PM, Rico Moorman wrote:
Hello,
I have a given piece of multiline HTML (which is generated using pandoc btw.) and I am trying to wrap certain elements (tags with a given class) with a <div>.
I already took a look at the Text.Regex.PCRE module which seemed a reasonable choice because I am already familiar with similar regex implementations in other languages.
I came up with the following function which takes a regex and replaces all matches within the given string using the provided function (which I would use to wrap the element)
import Text.Regex.PCRE ((=~~))
-- Replaces the whole match for the given regex using the given function regexReplace :: String -> (String -> String) -> String -> String regexReplace regex replace text = go text where go text = case text =~~ regex of Just (before, match, after) -> before ++ replace match ++ go after _ -> text
The problem with this function is, that it will not work on multiline strings. I would like to call it like this:
newBody = regexReplace "
" wrap body wrap x = "
" ++ x ++ "</div>"Is there any way to easily pass some kind of multiline modifier to the regex in question?
Or is this approach completely off and would something else be more appropriate/haskelly for the problem at hand?
Thank you very much in advance. _______________________________________________ Beginners mailing list Beginners@haskell.org (mailto:Beginners@haskell.org) http://www.haskell.org/mailman/listinfo/beginners