Michael, Here is how I do it.
module Main where
import Text.Regex.Posix.ByteString import Data.Maybe import qualified Data.ByteString.Char8 as S
text = S.pack "11\n abcd \n22" p = S.pack "11\n(.*)\n22"
main :: IO () main = do { (Right pat) <- compile compExtended execBlank p ; res <- regexec pat text ; case res of { (Right (Just (_,_,_,m))) -> putStrLn (show m) ; _ -> putStrLn "not matched." } }
You may swap out ByteString with String,
PCRE should be similar, too.
Regards,
Kenny
On Wed, Nov 4, 2009 at 2:04 PM, Michael Mossey
kenny lu wrote:
Hi Michael,
Could you give an example of what patterns you want to write?
Regards, Kenny
Something like
text = "11\n abcd \n22" answer = text =~ "11.*22" :: <various possibilities>
and have it find the entire string. The default behavior is to stop matching when it encounters a newline. There is mention in the Text.Regex.Posix docs of a flag to control this behavior, but it is not easy to figure out from the docs how to provide flags. The left-hand side of the =~ is a very complex type.
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