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https://issues.apache.org/jira/browse/LANG-619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12857847#action_12857847
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Stephan van Hugten commented on LANG-619:
-----------------------------------------
How would this work for case insensitive searches?
Right now this fails:
String source = "This is cool, oh so supercool";
String expected = "This is SUPERcoolio, oh so superSUPERcoolio";
Assert.assertEquals(expected, source.replaceAll("(?i:cOoL)", this.prefix + "$1"
+ this.suffix));
while this works:
Assert.assertEquals(expected, source.replaceAll("(cool)", this.prefix + "$1" +
this.suffix));
java.lang.IndexOutOfBoundsException: No group 1
at java.util.regex.Matcher.group(Matcher.java:470)
at java.util.regex.Matcher.appendReplacement(Matcher.java:737)
at java.util.regex.Matcher.replaceAll(Matcher.java:813)
at java.lang.String.replaceAll(String.java:2189)
> String prefixing/suffixing
> --------------------------
>
> Key: LANG-619
> URL: https://issues.apache.org/jira/browse/LANG-619
> Project: Commons Lang
> Issue Type: New Feature
> Components: lang.*
> Affects Versions: 2.5
> Reporter: Stephan van Hugten
> Attachments: StringExtendedUtils.zip
>
>
> I had a use case that I wanted to search through a string and, when I found a
> match, prefix or suffix (or both) the matching term, i.e. to apply a
> highlighting class to a matching keyword in a search.
> I noticed that this cannot be done by the StringUtils framework, so me and a
> colleague made this code and would like to donate it to the StringUtils
> project. In the attachment I included the class with the extensions plus a
> Unit test testing all the usecases. I hope you like it.
> There are 3 methods in the attached class:
> prefix: searches through a string and prefixes a match
> suffix: searches through a string and suffixes a match
> around: does both, prefix or suffix may be null.
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