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Haskell Core Libraries (base package)ParentContentsIndex
Text.Regex.Posix
Portability non-portable (needs POSIX regexps)
Stability experimental
Maintainer libraries@haskell.org
Contents
The Regex type
Compiling a regular expression
Flags for regcomp
Matching a regular expression
Description
Interface to the POSIX regular expression library.
Synopsis
data Regex
regcomp :: String -> Int -> IO Regex
regExtended :: Int
regIgnoreCase :: Int
regNewline :: Int
regexec :: Regex -> String -> IO (Maybe (String, String, String, [String]))
The Regex type
data Regex
A compiled regular expression
Compiling a regular expression
regcomp
:: String The regular expression to compile
-> Int Flags (summed together)
-> IO Regex Returns: the compiled regular expression
Compiles a regular expression
Flags for regcomp
regExtended :: Int
regIgnoreCase :: Int
regNewline :: Int
Matching a regular expression
regexec
:: Regex Compiled regular expression
-> String String to match against
-> IO (Maybe (String, String, String, [String]))

Returns: Nothing if the regex did not match the string, or:

   Just (everything before match,
         matched portion,
         everything after match,
         subexpression matches)
Matches a regular expression against a string
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