new StringUtil.asPatternInSentense method

This commit is contained in:
Marc Baloup 2023-02-11 23:57:56 +01:00
parent 6577367c27
commit dd2b4467ed

View File

@ -139,4 +139,24 @@ public class StringUtil {
return s -> Long.toString(operator.apply(Long.parseLong(s)));
}
/**
* Generate a {@link Pattern} with extra wrapping regex around the provided one to consider a sentense (like a chat
* message). For instance, the returned pattern will only match the expression at the beginning or end of sentence,
* or separated by the rest of it with space or another non-letter character.
* @param wordPattern the regex pattern to wrap.
* @param caseInsensitive if the pattern must match ignoring case.
* @return a {@link Pattern}. The matching will match 3 groups. The first group is the eventual non-letter separator
* before the matched word, the second one is the actual word, and the last one is the eventual non-letter separator
* after the matched word. Any additionnal pattern group between the 2nd and the last one are thoses provided in the
* wordPattern.
*/
public static Pattern asPatternInSentense(String wordPattern, boolean caseInsensitive) {
return Pattern.compile((caseInsensitive ? "(?i)" : "") + "(\\P{L}|^)(" + wordPattern + ")(\\P{L}|$)");
}
}