001///////////////////////////////////////////////////////////////////////////////////////////////
002// checkstyle: Checks Java source code and other text files for adherence to a set of rules.
003// Copyright (C) 2001-2026 the original author or authors.
004//
005// This library is free software; you can redistribute it and/or
006// modify it under the terms of the GNU Lesser General Public
007// License as published by the Free Software Foundation; either
008// version 2.1 of the License, or (at your option) any later version.
009//
010// This library is distributed in the hope that it will be useful,
011// but WITHOUT ANY WARRANTY; without even the implied warranty of
012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013// Lesser General Public License for more details.
014//
015// You should have received a copy of the GNU Lesser General Public
016// License along with this library; if not, write to the Free Software
017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
018///////////////////////////////////////////////////////////////////////////////////////////////
019
020package com.puppycrawl.tools.checkstyle.checks;
021
022import java.nio.charset.StandardCharsets;
023
024/**
025 * Represents the options for line ending settings.
026 *
027 * @see LineEndingCheck
028 */
029public enum LineEndingOption {
030
031    /** Unix-style line ending. **/
032    LF("\n"),
033
034    /** Windows-style line ending. **/
035    CRLF("\r\n"),
036
037    /** Mac-style line ending. **/
038    CR("\r");
039
040    /** The line ending representation. */
041    private final String lineEnding;
042
043    /**
044     * Creates a new {@code LineEndingOption} instance.
045     *
046     * @param end the line ending, e.g. "\n"
047     */
048    LineEndingOption(String end) {
049        lineEnding = end;
050    }
051
052    /**
053     * Checks that bytes is equal to the byte representation of this line ending.
054     *
055     * @param bytes a bytes array to check
056     * @return true if bytes is equal to the byte representation of this line ending.
057     */
058    public boolean matches(byte... bytes) {
059        return lineEnding.equals(new String(bytes, StandardCharsets.US_ASCII));
060    }
061
062}