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src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipCoder.java

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rev 53038 : 8215472: (zipfs) Cleanups in implementation classes of jdk.zipfs and tests
   1 /*
   2  * Copyright (c) 2009, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.nio.zipfs;
  27 
  28 import java.nio.ByteBuffer;
  29 import java.nio.CharBuffer;
  30 import java.nio.charset.Charset;
  31 import java.nio.charset.CharsetDecoder;
  32 import java.nio.charset.CharsetEncoder;
  33 import java.nio.charset.CoderResult;
  34 import java.nio.charset.CodingErrorAction;
  35 import java.util.Arrays;
  36 
  37 import static java.nio.charset.StandardCharsets.UTF_8;
  38 import static java.nio.charset.StandardCharsets.ISO_8859_1;

  39 
  40 /**
  41  * Utility class for zipfile name and comment decoding and encoding
  42  *
  43  * @author  Xueming Shen
  44  */
  45 
  46 class ZipCoder {
  47 
  48     static class UTF8 extends ZipCoder {
  49         UTF8() {
  50             super(UTF_8);
  51         }
  52 
  53         @Override
  54         byte[] getBytes(String s) {        // fast pass for ascii
  55             for (int i = 0; i < s.length(); i++) {
  56                 if (s.charAt(i) > 0x7f) return super.getBytes(s);
  57             }
  58             return s.getBytes(ISO_8859_1);
  59         }
  60 
  61         @Override
  62         String toString(byte[] ba) {
  63             for (byte b : ba) {
  64                 if (b < 0) return super.toString(ba);
  65             }


   1 /*
   2  * Copyright (c) 2009, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.nio.zipfs;
  27 
  28 import java.nio.ByteBuffer;
  29 import java.nio.CharBuffer;
  30 import java.nio.charset.Charset;
  31 import java.nio.charset.CharsetDecoder;
  32 import java.nio.charset.CharsetEncoder;
  33 import java.nio.charset.CoderResult;
  34 import java.nio.charset.CodingErrorAction;
  35 import java.util.Arrays;
  36 

  37 import static java.nio.charset.StandardCharsets.ISO_8859_1;
  38 import static java.nio.charset.StandardCharsets.UTF_8;
  39 
  40 /**
  41  * Utility class for zipfile name and comment decoding and encoding
  42  *
  43  * @author Xueming Shen
  44  */

  45 class ZipCoder {
  46 
  47     static class UTF8 extends ZipCoder {
  48         UTF8() {
  49             super(UTF_8);
  50         }
  51 
  52         @Override
  53         byte[] getBytes(String s) {        // fast pass for ascii
  54             for (int i = 0; i < s.length(); i++) {
  55                 if (s.charAt(i) > 0x7f) return super.getBytes(s);
  56             }
  57             return s.getBytes(ISO_8859_1);
  58         }
  59 
  60         @Override
  61         String toString(byte[] ba) {
  62             for (byte b : ba) {
  63                 if (b < 0) return super.toString(ba);
  64             }


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