Raku Land



Actions Status


highlighter - highlight something inside a string


use highlighter;

say highlighter "foo bar", "bar", "<b>", "</b>", :type<words>; # foo <b>bar</b>

say highlighter "foo bar", "O", "*", :type<contains>, :ignorecase; # f*o**o* bar

say highlighter "foo bar", "fo", "*", :type<starts-with>;      # *fo*o bar

say highlighter "foo bar", / b.r /, "*";                       # foo *bar*


The highlighter distribution exports a single multi-dispatch subroutine highlighter that can be called to highlight a word, a string or the match of a regular expression inside a string.

All candidates of the highlighter subroutine take 4 positional parameters:

This is the string in which things should be highlighted.

This is either a string, or a regular expression indicating what should be highlighted.

This is the string that should be put before the thing that should be highlighted.

Optional. This is the string that should be put after the thing that should be highlighted. Defaults to the before string>.

The following optional named arguments can also be specified:

Optional if the needle is a regular expression, otherwise obligatory.

It indicates the type of search that should be performed. Possible options are words (look for the needle at word boundaries only), contains (look for the needle at any position) and starts-with (only look for the needle at the start of the string).

If the second positional argument is a string, then this indicates whether any searches should be done in a case insensitive manner.


Elizabeth Mattijsen liz@raku.rocks


Copyright 2021 Elizabeth Mattijsen

Source can be located at: https://github.com/lizmat/highlighter . Comments and Pull Requests are welcome.

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.