author | ohair |
Wed, 06 Apr 2011 22:06:11 -0700 | |
changeset 9035 | 1255eb81cc2f |
parent 8553 | 46c2babb1e44 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, 2011, 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 4334846 |
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@summary Make sure zip file comments of various sizes can be written. |
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@author Martin Buchholz |
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*/ |
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import java.io.*; |
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import java.util.zip.ZipEntry; |
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import java.util.zip.ZipFile; |
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import java.util.zip.ZipOutputStream; |
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public class Comment { |
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private static final String entryName = "entryName"; |
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private static final String entryContents = "entryContents"; |
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private static final int commentMaxLength = 0xFFFF; |
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private static final int [] commentLengths |
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= { 0, 1, 32768, commentMaxLength - 1, commentMaxLength }; |
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public static void main(String argv[]) |
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throws Exception |
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{ |
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for (int i = 0; i < commentLengths.length; ++i) { |
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int commentLength = commentLengths[i]; |
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String comment = buildComment(commentLength); |
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String name = "Test" + commentLength + ".zip"; |
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writeZipFile(name, comment); |
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verifyZipFile(name, comment); |
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new File(name).delete(); |
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System.out.println(commentLength + ": successful"); |
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} |
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} |
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private static void writeZipFile(String name, String comment) |
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throws IOException |
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{ |
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try (FileOutputStream fos = new FileOutputStream(name); |
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ZipOutputStream zos = new ZipOutputStream(fos)) |
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{ |
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zos.setComment(comment); |
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ZipEntry ze = new ZipEntry(entryName); |
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ze.setMethod(ZipEntry.DEFLATED); |
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zos.putNextEntry(ze); |
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new DataOutputStream(zos).writeUTF(entryContents); |
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zos.closeEntry(); |
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} |
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} |
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private static void verifyZipFile(String name, String comment) |
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throws Exception |
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{ |
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// Check that Zip entry was correctly written. |
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try (ZipFile zipFile = new ZipFile(name)) { |
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ZipEntry zipEntry = zipFile.getEntry(entryName); |
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InputStream is = zipFile.getInputStream(zipEntry); |
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String result = new DataInputStream(is).readUTF(); |
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if (!result.equals(entryContents)) |
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throw new Exception("Entry contents corrupted"); |
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} |
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try (RandomAccessFile file = new RandomAccessFile(name, "r")) { |
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// Check that comment length was correctly written. |
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file.seek(file.length() - comment.length() |
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- ZipFile.ENDHDR + ZipFile.ENDCOM); |
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int b1 = file.readUnsignedByte(); |
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int b2 = file.readUnsignedByte(); |
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if (b1 + (b2 << 8) != comment.length()) |
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throw new Exception("Zip file comment length corrupted"); |
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// Check that comment was correctly written. |
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file.seek(file.length() - comment.length()); |
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byte [] bytes = new byte [comment.length()]; |
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file.readFully(bytes); |
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if (! comment.equals(new String(bytes, "UTF8"))) |
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throw new Exception("Zip file comment corrupted"); |
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} |
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} |
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private static String buildComment(int length) { |
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StringBuffer result = new StringBuffer(); |
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while (result.length() < length) { |
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/* Endhdr is 22 bytes long, so this pattern makes it easy |
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* to see if it is copied correctly */ |
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result.append("abcdefghijklmnopqrstuvABCDEFGHIJKLMNOPQRSTUV"); |
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} |
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String string = result.toString(); |
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string = string.substring(string.length() - length); |
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return string; |
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} |
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} |