package com.leosam.tvbox.mv.utils;

import java.util.ArrayList;
import java.util.List;

/**
 * @author admin
 * @since 2023/6/12 21:32
 */
public class StringUtils {

    public static final String EMPTY = "";

    public static boolean isNotEmpty(final CharSequence cs) {
        return !isEmpty(cs);
    }

    public static boolean isEmpty(final CharSequence cs) {
        return cs == null || cs.length() == 0;
    }

    public static String defaultIfEmpty(final String str, String defaultStr) {
        return isNotEmpty(str) ? str : defaultStr;
    }

    public static String trimToEmpty(final String str) {
        return str == null ? EMPTY : str.trim();
    }

    public static List<String> reverseSplit(String s, String delimiter, int limit) {
        List<String> result = new ArrayList<>();
        if (s == null || delimiter == null || limit <= 0) {
            return result;
        }

        int lastIndex = s.lastIndexOf(delimiter);
        while (limit > 1 && lastIndex != -1) {
            result.add(0, s.substring(lastIndex + delimiter.length()));
            s = s.substring(0, lastIndex);
            lastIndex = s.lastIndexOf(delimiter);
            limit--;
        }
        result.add(0, s);
        return result;
    }

}