Moduleregex-compat-0.95.2.1Haskell2010

Text.Regex

Regular expression matching. Uses the POSIX regular expression interface in Text.Regex.Posix.

1 type
6 values

Packageregex-compat-0.95.2.1
Exports7
LanguageHaskell2010
LicenceBSD-3-Clause
SourceRegex.hs

Regular expressions

7 declarations

datadata Regex

A compiled regular expression.

Instances13RegexOptions, RegexMaker, RegexLike, RegexContext, …

RegexLike Regex ByteStringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.ByteString · orphan
RegexLike Regex ByteStringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.ByteString.Lazy · orphan
RegexLike Regex StringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.String · orphan
RegexContext Regex ByteString ByteStringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.ByteString · orphan
RegexContext Regex ByteString ByteStringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.ByteString.Lazy · orphan
RegexContext Regex String StringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.String · orphan
RegexOptions Regex CompOption ExecOptionDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.Wrap
RegexMaker Regex CompOption ExecOption ByteStringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.ByteString · orphan
RegexMaker Regex CompOption ExecOption ByteStringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.ByteString.Lazy · orphan
RegexMaker Regex CompOption ExecOption StringDefined in regex-posix-0.96.0.2 · Text.Regex.Posix.String · orphan
RegexMaker Regex CompOption ExecOption (Seq Char)Defined in regex-posix-0.96.0.2 · Text.Regex.Posix.Sequence · orphan
RegexLike Regex (Seq Char)Defined in regex-posix-0.96.0.2 · Text.Regex.Posix.Sequence · orphan
RegexContext Regex (Seq Char) (Seq Char)Defined in regex-posix-0.96.0.2 · Text.Regex.Posix.Sequence · orphan

valuemkRegex :: String -> Regex

Makes a regular expression with the default options (multi-line, case-sensitive). The syntax of regular expressions is otherwise that of egrep (i.e. POSIX "extended" regular expressions).

valuemkRegexWithOpts

:: String
The regular expression to compile.
-> Bool
True iff '^' and '$' match the beginning and end of individual lines respectively, and '.' does not match the newline character.
-> Bool
True iff matching is case-sensitive.
-> Regex
Returns: the compiled regular expression.

Makes a regular expression, where the multi-line and case-sensitive options can be changed from the default settings.

valuematchRegex

:: Regex
The regular expression.
-> String
The string to match against.
-> Maybe [String]
Returns: Just strs if the match succeeded (and strs is the list of subexpression matches), or Nothing otherwise.

Match a regular expression against a string.

valuematchRegexAll

:: Regex
The regular expression.
-> String
The string to match against.

-> Maybe (String, String, String, [String])

Returns: Nothing if the match failed, or:

 Just ( everything before match,
        portion matched,
        everything after the match,
        subexpression matches )

Match a regular expression against a string, returning more information about the match.

valuesubRegex

:: Regex
Search pattern
-> String
Input string
-> String
Replacement text
-> String
Output string

Replaces every occurrence of the given regexp with the replacement string.

In the replacement string, "\1" refers to the first substring; "\2" to the second, etc; and "\0" to the entire match. "\\\\" will insert a literal backslash.

This does not advance if the regex matches an empty string. This misfeature is here to match the behavior of the original Text.Regex API.

valuesplitRegex :: Regex -> String -> [String]

Splits a string based on a regular expression. The regular expression should identify one delimiter.

This does not advance and produces an infinite list of [] if the regex matches an empty string. This misfeature is here to match the behavior of the original Text.Regex API.