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Stanford CoreNLP provides a set of natural language analysis tools which can take raw English language text input and give the base forms of words, their parts of speech, whether they are names of companies, people, etc., normalize dates, times, and numeric quantities, mark up the structure of sentences in terms of phrases and word dependencies, and indicate which noun phrases refer to the same entities. It provides the foundational building blocks for higher level text understanding applications.

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package edu.stanford.nlp.international.french;

import java.util.regex.Pattern;

/**
 * Contains patterns for matching certain word types in French, such
 * as common suffices for nouns, verbs, adjectives and adverbs.
 */
public class FrenchUnknownWordSignatures {

  private static final Pattern pNounSuffix = Pattern.compile("(?:ier|ière|ité|ion|ison|isme|ysme|iste|esse|eur|euse|ence|eau|erie|ng|ette|age|ade|ance|ude|ogue|aphe|ate|duc|anthe|archie|coque|érèse|ergie|ogie|lithe|mètre|métrie|odie|pathie|phie|phone|phore|onyme|thèque|scope|some|pole|ôme|chromie|pie)s?$");
  private static final Pattern pAdjSuffix = Pattern.compile("(?:iste|ième|uple|issime|aire|esque|atoire|ale|al|able|ible|atif|ique|if|ive|eux|aise|ent|ois|oise|ante|el|elle|ente|oire|ain|aine)s?$");
  private static final Pattern pHasDigit = Pattern.compile("\\d+");
  private static final Pattern pIsDigit = Pattern.compile("^\\d+$");
  private static final Pattern pPosPlural = Pattern.compile("(?:s|ux)$");
  private static final Pattern pVerbSuffix = Pattern.compile("(?:ir|er|re|ez|ont|ent|ant|ais|ait|ra|era|eras|é|és|ées|isse|it)$");
  private static final Pattern pAdvSuffix = Pattern.compile("(?:iment|ement|emment|amment)$");
  private static final Pattern pHasPunc = Pattern.compile("(?:[\u0021-\u002F\u003A-\u0040\\u005B-\u0060\u007B-\u007E\u00A1-\u00BF\u00F7\u2010-\u2027\u2030-\u205E\u20A0-\u20BA])+");
  private static final Pattern pIsPunc = Pattern.compile("^(?:[\u0021-\u002F\u003A-\u0040\\u005B-\u0060\u007B-\u007E\u00A1-\u00BF\u00F7\u2010-\u2027\u2030-\u205E\u20A0-\u20BA])+$");
  private static final Pattern pAllCaps = Pattern.compile("^[A-Z\u00C0-\u00D6\u00D8-\u00DE]+$");

  private FrenchUnknownWordSignatures() {} // static methods

  public static boolean hasNounSuffix(String s) {
    return pNounSuffix.matcher(s).find();
  }

  public static String nounSuffix(String s) {
    return hasNounSuffix(s) ? "-noun" : "";
  }

  public static boolean hasAdjSuffix(String s) {
    return pAdjSuffix.matcher(s).find();
  }

  public static String adjSuffix(String s) {
    return hasAdjSuffix(s) ? "-adj" : "";
  }

  public static String hasDigit(String s) {
    return pHasDigit.matcher(s).find() ? "-num" : "";
  }

  public static String isDigit(String s) {
    return pIsDigit.matcher(s).find() ? "-isNum" : "";
  }

  public static boolean hasVerbSuffix(String s) {
    return pVerbSuffix.matcher(s).find();
  }

  public static String verbSuffix(String s) {
    return hasVerbSuffix(s) ? "-verb" : "";
  }

  public static boolean hasPossiblePlural(String s) {
    return pPosPlural.matcher(s).find();
  }

  public static String possiblePlural(String s) {
    return hasPossiblePlural(s) ? "-plural" : "";
  }

  public static boolean hasAdvSuffix(String s) {
    return pAdvSuffix.matcher(s).find();
  }

  public static String advSuffix(String s) {
    return hasAdvSuffix(s) ? "-adv" : "";
  }

  public static String hasPunc(String s) {
    return pHasPunc.matcher(s).find() ? "-hpunc" : "";
  }

  public static String isPunc(String s) {
    return pIsPunc.matcher(s).matches() ? "-ipunc" : "";
  }

  public static String isAllCaps(String s) {
    return pAllCaps.matcher(s).matches() ? "-allcap" : "";
  }

  public static String isCapitalized(String s) {
    if(s.length() > 0) {
      Character ch = s.charAt(0);
      return Character.isUpperCase(ch) ? "-upper" : "";
    }
    return "";
  }
}