fr.ms.lang.StringUtils Maven / Gradle / Ivy

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/*
 * This file is part of Log4Jdbc.
 *
 * Log4Jdbc is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Log4Jdbc is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Log4Jdbc.  If not, see .
 *
 */
package fr.ms.lang;

import fr.ms.lang.delegate.DefaultStringMakerFactory;
import fr.ms.lang.delegate.StringMaker;
import fr.ms.lang.delegate.StringMakerFactory;

/**
 *
 * @see Marco4J
 *
 *
 * @author Marco Semiao
 *
 */
public final class StringUtils {

    private final static StringMakerFactory stringMakerFactory = DefaultStringMakerFactory.getInstance();

    private StringUtils() {
    }

    /***
     * Add space to the provided String to match the provided width
     *
     * @param s
     *            the String we want to adjust
     * @param n
     *            the width of the returned String
     * @return a String matching the provided width
     */
    public static String padRight(final String s, final int n) {
	final StringMaker sb = stringMakerFactory.newString();

	for (int i = 0; i < n; i++) {
	    sb.append(s);
	}

	return sb.toString();
    }

    public static String padRight(final String start, final String s, final int n) {
	return start + padRight(s, n - start.length());
    }

    public static String replaceAll(final String str, final String replace, final String replacement) {
	final StringMaker sb = stringMakerFactory.newString(str);
	int firstOccurrence = sb.toString().indexOf(replace);

	while (firstOccurrence != -1) {
	    sb.replace(firstOccurrence, firstOccurrence + replace.length(), replacement);
	    final int position = firstOccurrence + replacement.length();
	    firstOccurrence = sb.toString().indexOf(replace, position);
	}

	return sb.toString();
    }

    public static String removePart(final String str, final String start, final String end) {
	if (str == null || str.isEmpty()) {
	    return null;
	}
	final int startComment = str.indexOf(start);
	final int endComment = str.indexOf(end);

	if (startComment == -1 || endComment == -1 || startComment >= endComment) {
	    return str;
	}

	final String e1 = str.substring(0, startComment);
	final String e2 = str.substring(endComment + 2, str.length());

	final String replace = e1 + e2;

	final String formatSql = removePart(replace, start, end);

	return formatSql;
    }
}