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Regex replace¤

Description¤

The Regex replace plugin replaces all occurrences of a regular expression.

This plugin is a replace transformer plugin. This means that if the regular expression does not match the input value, it will be replaced with an empty string, i.e. deleted.

Notes on regular expressions¤

The most commonly used examples of regular expressions are "\\s*" for representing whitespace characters, [^0-9]* for numbers, and [a-z]* for the usual English characters between a and z. The star (*) represents an arbitrary number of occurrences (zero included), whereas the plus sign (+) indicates a strictly positive number of occurrences (zero excluded).

An uppercase version of the predefined character classes means negation, such as "\\S*" for non-whitespace characters, or "\\D*" for non-digits. Similarly, the hat sign ^ can be used for negating (arbitrary) character classes, such as [^xyz] for any character except x, y or z.

Attention: Slashes in regular expressions have to be escaped, e.g. instead of \s we need to escape it as \\s.

Note for advanced users¤

A compilation of the available constructs for building regular expressions is available in the API of the Java Pattern.

Examples¤

Notation: List of values are represented via square brackets. Example: [first, second] represents a list of two values “first” and “second”.

Removes all digits by replacing them with an empty string:

  • Parameters

    • regex: [^0-9]*

  • Input values:

    1. [a0b1c2]

  • Returns: [012]

Removes all letters by replacing them with an empty string:

  • Parameters

    • regex: [a-z]*

  • Input values:

    1. [abcdef1]

  • Returns: [1]

Removes all vowels by replacing them with an empty string:

  • Parameters

    • regex: [aeyiuoAEYIUO]*

  • Input values:

    1. [Dwalin, Balin, Kili, Fili, Dori, Nori, Ori, Oin, Gloin, Bifur, Bofur, Bombur, Thorin]

  • Returns: [Dwln, Bln, Kl, Fl, Dr, Nr, r, n, Gln, Bfr, Bfr, Bmbr, Thrn]

Removes all consonants by replacing them with an empty string:

  • Parameters

    • regex: [^aeyiuoAEYIUO]*

  • Input values:

    1. [Dwalin, Balin, Kili, Fili, Dori, Nori, Ori, Oin, Gloin, Bifur, Bofur, Bombur, Thorin]

  • Returns: [ai, ai, ii, ii, oi, oi, Oi, Oi, oi, iu, ou, ou, oi]

Replaces all vowels with a common vowel:

  • Parameters

    • regex: [aeyiuoAEYIUO]{1}
    • replace: a

  • Input values:

    1. [Dwalin, Balin, Kili, Fili, Dori, Nori, Ori, Oin, Gloin, Bifur, Bofur, Bombur, Thorin]

  • Returns: [Dwalan, Balan, Kala, Fala, Dara, Nara, ara, aan, Glaan, Bafar, Bafar, Bambar, Tharan]

Replaces all vowels with a common double vowel:

  • Parameters

    • regex: [aeyiuoAEYIUO]{1}
    • replace: aa

  • Input values:

    1. [Dwalin, Balin, Kili, Fili, Dori, Nori, Ori, Oin, Gloin, Bifur, Bofur, Bombur, Thorin]

  • Returns: [Dwaalaan, Baalaan, Kaalaa, Faalaa, Daaraa, Naaraa, aaraa, aaaan, Glaaaan, Baafaar, Baafaar, Baambaar, Thaaraan]

Parameter¤

Regex¤

The regular expression to match

  • ID: regex
  • Datatype: string
  • Default Value: None

Replace¤

The replacement of each match

  • ID: replace
  • Datatype: string
  • Default Value: None

Advanced Parameter¤

None

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