/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * 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 com.marianhello.utils;


import java.util.Iterator;

public class TextUtils {
    private static final String TAG = "TextUtils";

    /**
     * Returns a string containing the tokens joined by delimiters.
     * @param tokens an array objects to be joined. Strings will be formed from
     *     the objects by calling object.toString().
     */
    public static String join(CharSequence delimiter, Object[] tokens) {
        StringBuilder sb = new StringBuilder();
        boolean firstTime = true;
        for (Object token: tokens) {
            if (firstTime) {
                firstTime = false;
            } else {
                sb.append(delimiter);
            }
            sb.append(token);
        }
        return sb.toString();
    }

    /**
     * Returns a string containing the tokens joined by delimiters.
     * @param tokens an array objects to be joined. Strings will be formed from
     *     the objects by calling object.toString().
     */
    public static String join(CharSequence delimiter, Iterable tokens) {
        StringBuilder sb = new StringBuilder();
        Iterator<?> it = tokens.iterator();
        if (it.hasNext()) {
            sb.append(it.next());
            while (it.hasNext()) {
                sb.append(delimiter);
                sb.append(it.next());
            }
        }
        return sb.toString();
    }

    public static String removeLastChar(String str, String lastChar) {
        if (str == null) {
            return null;
        }
        int indexOfLastChar = str.length() - 1;
        if (lastChar == null || str.substring(indexOfLastChar).equals(lastChar)) {
            return str.substring(0, indexOfLastChar);
        }
        return str;
    }
}