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/*
* Copyright (c) 1998, 2011, 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 4028605 4109069 4234207 4401122
@summary Make sure ZipInputStream/InflaterInputStream.available() will
return 0 after EOF has reached and 1 otherwise.
*/
import java.io.*;
import java.util.zip.*;
public class Available {
public static void main(String[] args) throws Exception {
// 4028605 4109069 4234207
test1();
// test 4401122
test2();
}
private static void test1() throws Exception {
File f = new File(System.getProperty("test.src", "."), "input.jar");
// test ZipInputStream
try (FileInputStream fis = new FileInputStream(f);
ZipInputStream z = new ZipInputStream(fis))
{
z.getNextEntry();
tryAvail(z);
}
// test InflaterInputStream
try (ZipFile zfile = new ZipFile(f)) {
tryAvail(zfile.getInputStream(zfile.getEntry("Available.java")));
}
}
static void tryAvail(InputStream in) throws Exception {
byte[] buf = new byte[1024];
int n;
while ((n = in.read(buf)) != -1);
if (in.available() != 0) {
throw new Exception("available should return 0 after EOF");
}
}
// To reproduce 4401122
private static void test2() throws Exception {
File f = new File(System.getProperty("test.src", "."), "input.jar");
try (ZipFile zf = new ZipFile(f)) {
InputStream in = zf.getInputStream(zf.getEntry("Available.java"));
int initialAvailable = in.available();
in.read();
if (in.available() != initialAvailable - 1)
throw new RuntimeException("Available not decremented.");
for(int j=0; j<initialAvailable-1; j++)
in.read();
if (in.available() != 0)
throw new RuntimeException();
in.close();
if (in.available() != 0)
throw new RuntimeException();
}
}
}
¤ Dauer der Verarbeitung: 0.31 Sekunden
(vorverarbeitet)
¤
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