Safe Haskell	None
Language	Haskell2010

Text.RE.Tools.Find

Contents

Find
IsRegex
Replace

Synopsis

Find

The Find toolkit traverses directory trees invoking actions for each file that matches a RE.

See the Regex Tools tutorial at http://re-tutorial-tools.regex.uk

data FindMethods s Source #

as we don't want the directory and FilePath dependencies we will abstract the three calls we need into this record type

Constructors

FindMethods
Fields doesDirectoryExistDM :: s -> IO Bool doesDirectoryExist from System.Directory listDirectoryDM :: s -> IO [s] either getDirectoryContents or listDirectory from System.Directory combineDM :: s -> s -> s / from System.FilePath

findMatches_ :: IsRegex re s => FindMethods s -> re -> s -> IO [s] Source #

recursively list all files whose filename matches given RE, sorting the list into ascending order; if the argument path has a trailing / then it will be removed

findMatches_' Source #

Arguments

:: IsRegex re s
=> FindMethods s	the directory and filepath methods
-> ([s] -> [s])	result post-processing function
-> (Match s -> Bool)	filtering function
-> re	re to be matched against the leaf filename
-> s	root directory of the search
-> IO [s]

recursively list all files whose filename matches given RE, using the given function to determine which matches to accept

IsRegex

class Replace s => IsRegex re s where Source #

the IsRegex class allows polymorhic tools to be written that will work with a variety of regex back ends and text types

Minimal complete definition

matchOnce, matchMany, makeRegexWith, makeSearchReplaceWith, regexSource

Methods

matchOnce :: re -> s -> Match s Source #

finding the first match

matchMany :: re -> s -> Matches s Source #

finding all matches

makeRegex :: (Functor m, Monad m) => s -> m re Source #

compiling an RE, failing if the RE is not well formed

makeRegexWith :: (Functor m, Monad m) => SimpleREOptions -> s -> m re Source #

comiling an RE, specifying the SimpleREOptions

makeSearchReplace :: (Functor m, Monad m, IsRegex re s) => s -> s -> m (SearchReplace re s) Source #

compiling a SearchReplace template from the RE text and the template Text, failing if they are not well formed

makeSearchReplaceWith :: (Functor m, Monad m, IsRegex re s) => SimpleREOptions -> s -> s -> m (SearchReplace re s) Source #

compiling a SearchReplace template specifing the SimpleREOptions for the RE

makeEscaped :: (Functor m, Monad m) => (s -> s) -> s -> m re Source #

incorporate an escaped string into a compiled RE with the default options

makeEscapedWith :: (Functor m, Monad m) => SimpleREOptions -> (s -> s) -> s -> m re Source #

incorporate an escaped string into a compiled RE with the specified SimpleREOptions

regexSource :: re -> s Source #

extract the text of the RE from the RE

data SearchReplace re s Source #

contains a compiled RE and replacement template

Constructors

SearchReplace
Fields getSearch :: !re the RE to match a string to replace getTemplate :: !s the replacement template with ${cap} used to identify a capture (by number or name if one was given) and `$$` being used to escape a single `$`

Instances

Functor (SearchReplace re) Source #
Methods fmap :: (a -> b) -> SearchReplace re a -> SearchReplace re b # (<$) :: a -> SearchReplace re b -> SearchReplace re a #
(Show s, Show re) => Show (SearchReplace re s) Source #
Methods showsPrec :: Int -> SearchReplace re s -> ShowS # show :: SearchReplace re s -> String # showList :: [SearchReplace re s] -> ShowS #

searchReplaceAll :: IsRegex re s => SearchReplace re s -> s -> s Source #

search and replace all matches in the argument text; e.g., this function will convert every YYYY-MM-DD format date in its argument text into a DD/MM/YYYY date:

searchReplaceAll [ed|${y}([0-9]{4})-0*${m}([0-9]{2})-0*${d}([0-9]{2})///${d}/${m}/${y}|]

searchReplaceFirst :: IsRegex re s => SearchReplace re s -> s -> s Source #

search and replace the first occurrence only (if any) in the input text e.g., to prefix the first string of four hex digits in the imput text, if any, with 0x:

searchReplaceFirst [ed|[0-9A-Fa-f]{4}///0x$0|]

Replace

module Text.RE.Replace