| /* |
| * Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| @bug 4081733 |
| @summary Make sure LineNumberReader returns right line number |
| when mark and reset are used |
| */ |
| |
| |
| import java.io.*; |
| |
| public class MarkReset { |
| |
| /** |
| * This program creates a LineNumberReader and tries to find all |
| * the non-whitespace characters in the file. |
| */ |
| public static void main(String[] args) throws Exception { |
| int n, line; |
| |
| LineNumberReader reader = new LineNumberReader |
| (new StringReader("0\r\n1\r2\n3\r\n\r5\r\r7\n\n9")); |
| for (n = 0; n < 7; n++) { |
| skipWhiteSpace(reader); /* Skip all whitespace */ |
| int c = reader.read(); /* Read the non-whitespace character */ |
| if (c < 0) { /* Might be eof */ |
| break; /* It is. Get out of the loop */ |
| } |
| line = reader.getLineNumber(); |
| if(line != (c - 48)) { |
| throw new Exception("Failed test : Line number expected " |
| + (c - 48) + " got " + line ); |
| } |
| } |
| } |
| |
| /** |
| * Skip whitespace in the file. Mark and reset |
| */ |
| private static void skipWhiteSpace(LineNumberReader reader) throws IOException { |
| while (true) { |
| /* Mark in case the character is not whitespace */ |
| reader.mark(10); |
| /* Read the character */ |
| int c = reader.read(); |
| if (Character.isWhitespace((char) c)) { |
| /* Loop while in whitespace */ |
| continue; |
| } |
| |
| /* Return to the non-whitespace character */ |
| reader.reset(); |
| break; |
| } |
| } |
| } |