78 lines
2.7 KiB
Java
78 lines
2.7 KiB
Java
/*
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* Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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@bug 4081733
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@summary Make sure LineNumberReader returns right line number
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when mark and reset are used
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*/
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import java.io.*;
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public class MarkReset {
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/**
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* This program creates a LineNumberReader and tries to find all
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* the non-whitespace characters in the file.
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*/
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public static void main(String[] args) throws Exception {
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int n, line;
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LineNumberReader reader = new LineNumberReader
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(new StringReader("0\r\n1\r2\n3\r\n\r5\r\r7\n\n9"));
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for (n = 0; n < 7; n++) {
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skipWhiteSpace(reader); /* Skip all whitespace */
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int c = reader.read(); /* Read the non-whitespace character */
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if (c < 0) { /* Might be eof */
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break; /* It is. Get out of the loop */
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}
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line = reader.getLineNumber();
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if(line != (c - 48)) {
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throw new Exception("Failed test : Line number expected "
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+ (c - 48) + " got " + line );
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}
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}
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}
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/**
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* Skip whitespace in the file. Mark and reset
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*/
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private static void skipWhiteSpace(LineNumberReader reader) throws IOException {
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while (true) {
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/* Mark in case the character is not whitespace */
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reader.mark(10);
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/* Read the character */
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int c = reader.read();
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if (Character.isWhitespace((char) c)) {
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/* Loop while in whitespace */
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continue;
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}
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/* Return to the non-whitespace character */
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reader.reset();
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break;
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}
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}
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}
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