Utilities.java

/*
 * Copyright 2011-2013 the original author or authors.
 *
 * Licensed 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 org.apache.lucene.analysis.kr.utils;

import org.apache.lucene.analysis.kr.morph.AnalysisOutput;
import org.apache.lucene.analysis.kr.morph.MorphException;
import org.apache.lucene.analysis.kr.morph.PatternConstants;

public class Utilities {

    public static String arrayToString(String[] strs) {
        if (strs == null || strs.length == 0)
            return "";

        StringBuilder sb = new StringBuilder(strs.length);
        for (String str : strs) {
            sb.append(str);
        }
        return sb.toString();
    }

    public static AnalysisOutput cloneOutput(AnalysisOutput o) throws MorphException {
        try {
            return o.clone();
        } catch (CloneNotSupportedException e) {
            throw new MorphException(e.getMessage(), e);
        }
    }

    public static String buildOutputString(AnalysisOutput o) {

        StringBuilder buff = new StringBuilder();

        buff.append(MorphUtil.buildTypeString(o.getStem(), o.getPos()));
        if (o.getNsfx() != null)
            buff.append(",").append(MorphUtil.buildTypeString(o.getNsfx(), PatternConstants.POS_SFX_N));

        if (o.getPatn() == PatternConstants.PTN_NJ || o.getPatn() == PatternConstants.PTN_ADVJ) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getJosa(), PatternConstants.POS_JOSA));
        } else if (o.getPatn() == PatternConstants.PTN_NSM) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getVsfx(), PatternConstants.POS_SFX_V));
            if (o.getPomi() != null)
                buff.append(",").append(MorphUtil.buildTypeString(o.getPomi(), PatternConstants.POS_PEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getEomi(), PatternConstants.POS_EOMI));
        } else if (o.getPatn() == PatternConstants.PTN_NSMJ) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getVsfx(), PatternConstants.POS_SFX_V));
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(0), PatternConstants.POS_NEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getJosa(), PatternConstants.POS_JOSA));
        } else if (o.getPatn() == PatternConstants.PTN_NSMXM) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getVsfx(), PatternConstants.POS_SFX_V));
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(0), PatternConstants.POS_COPULA));
            buff.append(",").append(MorphUtil.buildTypeString(o.getXverb(), PatternConstants.POS_XVERB));
            if (o.getPomi() != null)
                buff.append(",").append(MorphUtil.buildTypeString(o.getPomi(), PatternConstants.POS_PEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getEomi(), PatternConstants.POS_EOMI));
        } else if (o.getPatn() == PatternConstants.PTN_NJCM) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getJosa(), PatternConstants.POS_JOSA));
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(0), PatternConstants.POS_SFX_V));
            if (o.getPomi() != null)
                buff.append(",").append(MorphUtil.buildTypeString(o.getPomi(), PatternConstants.POS_PEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getEomi(), PatternConstants.POS_EOMI));
        } else if (o.getPatn() == PatternConstants.PTN_NSMXMJ) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getVsfx(), PatternConstants.POS_SFX_V));
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(1), PatternConstants.POS_COPULA));
            buff.append(",").append(MorphUtil.buildTypeString(o.getXverb(), PatternConstants.POS_XVERB));
            if (o.getPomi() != null)
                buff.append(",").append(MorphUtil.buildTypeString(o.getPomi(), PatternConstants.POS_PEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(0), PatternConstants.POS_NEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getJosa(), PatternConstants.POS_JOSA));
        } else if (o.getPatn() == PatternConstants.PTN_VM) {
            if (o.getPomi() != null)
                buff.append(",").append(MorphUtil.buildTypeString(o.getPomi(), PatternConstants.POS_PEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getEomi(), PatternConstants.POS_EOMI));
        } else if (o.getPatn() == PatternConstants.PTN_VMJ) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(0), PatternConstants.POS_NEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getJosa(), PatternConstants.POS_JOSA));
        } else if (o.getPatn() == PatternConstants.PTN_VMCM) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(0), PatternConstants.POS_NEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(1), PatternConstants.POS_SFX_N));
            if (o.getPomi() != null)
                buff.append(",").append(MorphUtil.buildTypeString(o.getPomi(), PatternConstants.POS_PEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getEomi(), PatternConstants.POS_EOMI));
        } else if (o.getPatn() == PatternConstants.PTN_VMXM) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(0), PatternConstants.POS_COPULA));
            buff.append(",").append(MorphUtil.buildTypeString(o.getXverb(), PatternConstants.POS_XVERB));
            if (o.getPomi() != null)
                buff.append(",").append(MorphUtil.buildTypeString(o.getPomi(), PatternConstants.POS_PEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getEomi(), PatternConstants.POS_EOMI));
        } else if (o.getPatn() == PatternConstants.PTN_VMXMJ) {
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(1), PatternConstants.POS_COPULA));
            buff.append(",").append(MorphUtil.buildTypeString(o.getXverb(), PatternConstants.POS_XVERB));
            if (o.getPomi() != null)
                buff.append(",").append(MorphUtil.buildTypeString(o.getPomi(), PatternConstants.POS_PEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getElist().get(0), PatternConstants.POS_NEOMI));
            buff.append(",").append(MorphUtil.buildTypeString(o.getJosa(), PatternConstants.POS_JOSA));
        }
        return buff.toString();

    }

    // -----------------------------------------------------------------------

    /**
     * <p>
     * Gets a System property, defaulting to <code>null</code> if the property cannot be read.
     * </p>
     * <p/>
     * <p>
     * If a <code>SecurityException</code> is caught, the return value is <code>null</code> and a message is written to
     * <code>System.err</code>.
     * </p>
     *
     * @param property the system property name
     * @return the system property value or <code>null</code> if a security problem occurs
     */
    public static String getSystemProperty(String property) {
        try {
            return System.getProperty(property);
        } catch (SecurityException ex) {
            // we are not allowed to look at this property
            System.err.println("Caught a SecurityException reading the system property '" + property
                                       + "'; the SystemUtils property value will default to null.");
            return null;
        }
    }
}