eu.project.ttc.resources.CompostInflectionRules.java Source code

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Here is the source code for eu.project.ttc.resources.CompostInflectionRules.java

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/*******************************************************************************
 * Copyright 2015-2016 - CNRS (Centre National de Recherche Scientifique)
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *******************************************************************************/
package eu.project.ttc.resources;

import java.io.IOException;
import java.io.InputStream;
import java.util.Collection;
import java.util.List;
import java.util.Scanner;
import java.util.Set;

import org.apache.commons.io.IOUtils;
import org.apache.uima.resource.DataResource;
import org.apache.uima.resource.ResourceInitializationException;
import org.apache.uima.resource.SharedResourceObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;

import eu.project.ttc.utils.TermSuiteConstants;

public class CompostInflectionRules implements SharedResourceObject {
    private static final Logger LOGGER = LoggerFactory.getLogger(CompostInflectionRules.class);

    public class InflectionRule {
        private String fromSuffixe;
        private String toSuffixe;
        private String regex;

        private InflectionRule(String fromSuffixe, String toSuffixe) {
            super();
            this.fromSuffixe = fromSuffixe;
            this.toSuffixe = toSuffixe;
            this.regex = this.fromSuffixe + "$";
        }

        public boolean canApplyTo(String str) {
            return str.endsWith(this.fromSuffixe);
        }

        public String inflect(String str) {
            return str.replaceAll(regex, this.toSuffixe);
        }
    }

    private List<InflectionRule> inflectionRules;

    public void load(DataResource data) throws ResourceInitializationException {
        InputStream inputStream;
        this.inflectionRules = Lists.newArrayList();
        try {
            inputStream = data.getInputStream();
            Scanner scanner = null;
            try {
                scanner = new Scanner(inputStream, "UTF-8");
                scanner.useDelimiter(TermSuiteConstants.LINE_BREAK);
                while (scanner.hasNext()) {
                    String rawLine = scanner.next();
                    String line = rawLine.split(";")[0];
                    String[] args = line.split(",");
                    if (args.length != 2 && !line.trim().isEmpty()) {
                        LOGGER.warn("Bad inflection rules format: " + rawLine);
                    } else {
                        this.inflectionRules.add(new InflectionRule(args[0].trim(), args[1].trim()));
                    }
                }
                this.inflectionRules = ImmutableList.copyOf(this.inflectionRules);
            } catch (Exception e) {
                throw new ResourceInitializationException(e);
            } finally {
                IOUtils.closeQuietly(scanner);
                IOUtils.closeQuietly(inputStream);
            }
        } catch (IOException e) {
            throw new ResourceInitializationException(e);
        }
    }

    public Collection<String> getInflections(String base) {
        Set<String> inflections = Sets.newHashSet();
        for (InflectionRule rule : this.inflectionRules) {
            if (rule.canApplyTo(base))
                inflections.add(rule.inflect(base));
        }
        return inflections;
    }
}