org.needcoke.coke.web.util.StringUtils Maven / Gradle / Ivy

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package org.needcoke.coke.web.util;

import cn.hutool.core.collection.CollUtil;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.StringTokenizer;

public class StringUtils {

    private static final String[] EMPTY_STRING_ARRAY = {};

    public static String[] tokenizeToStringArray(String str, String delimiters) {
        return tokenizeToStringArray(str, delimiters, true, true);
    }

    public static String[] tokenizeToStringArray(
            String str, String delimiters, boolean trimTokens, boolean ignoreEmptyTokens) {

        if (str == null) {
            return EMPTY_STRING_ARRAY;
        }

        StringTokenizer st = new StringTokenizer(str, delimiters);
        List tokens = new ArrayList<>();
        while (st.hasMoreTokens()) {
            String token = st.nextToken();
            if (trimTokens) {
                token = token.trim();
            }
            if (!ignoreEmptyTokens || token.length() > 0) {
                tokens.add(token);
            }
        }
        return toStringArray(tokens);
    }

    public static String[] toStringArray(Collection collection) {
        return (!CollUtil.isEmpty(collection) ? collection.toArray(EMPTY_STRING_ARRAY) : EMPTY_STRING_ARRAY);
    }
}