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RRegex.PCRE

Synopsis

data Regex compile :: String -> Int -> IO (Either (Int, String) Regex) execute :: Regex -> String -> Int -> IO (Maybe (Array Int (Int, Int))) executeExtract :: Regex -> String -> Int -> IO (Maybe (String, String, Array Int String)) pcreCaseless :: Int pcreMultiline :: Int pcreDotall :: Int pcreExtended :: Int pcreAnchored :: Int pcreDollarEndonly :: Int pcreExtra :: Int pcreNotbol :: Int pcreNoteol :: Int pcreUngreedy :: Int pcreNotempty :: Int getVersion :: Maybe String

Documentation

data Regex

A compiled regular expression Instances RegexLike Regex Char

compile

:: String The regular expression to compile -> Int Flags (summed together) -> IO (Either (Int, String) Regex) Returns: an error string and offset or the compiled regular expression Compiles a regular expression

execute

:: Regex Compiled regular expression -> String String to match against -> Int Options -> IO (Maybe (Array Int (Int, Int))) Returns: Nothing if the regex did not match the string, or: Just an array of (offset,length) pairs where index 0 is whole match, and the rest are the captured subexpressions. Matches a regular expression against a string

executeExtract

:: Regex compiled regular expression -> String string to match -> Int Flags (summed together) -> IO (Maybe (String, String, Array Int String)) Returns: Nothing if no match, else (text before match, text after match, array of matches with 0 being the whole match) execute match and extract substrings rather than just offsets

pcreCaseless :: Int

pcreMultiline :: Int

pcreDotall :: Int

pcreExtended :: Int

pcreAnchored :: Int

pcreDollarEndonly :: Int

pcreExtra :: Int

pcreNotbol :: Int

pcreNoteol :: Int

pcreUngreedy :: Int

pcreNotempty :: Int

getVersion :: Maybe String

return version of pcre used or Nothing if pcre is not available.

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