| 1 | /* |
| 2 | |
| 3 | Derby - Class org.apache.derby.impl.services.reflect.JarFile |
| 4 | |
| 5 | Copyright 1998, 2004 The Apache Software Foundation or its licensors, as applicable. |
| 6 | |
| 7 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | you may not use this file except in compliance with the License. |
| 9 | You may obtain a copy of the License at |
| 10 | |
| 11 | http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | |
| 13 | Unless required by applicable law or agreed to in writing, software |
| 14 | distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | See the License for the specific language governing permissions and |
| 17 | limitations under the License. |
| 18 | |
| 19 | */ |
| 20 | |
| 21 | package org.apache.derby.impl.services.reflect; |
| 22 | |
| 23 | import java.util.zip.ZipFile; |
| 24 | import java.util.zip.ZipEntry; |
| 25 | import java.util.zip.ZipInputStream; |
| 26 | |
| 27 | import java.io.IOException; |
| 28 | import java.io.File; |
| 29 | import java.io.InputStream; |
| 30 | import java.io.ByteArrayOutputStream; |
| 31 | import org.apache.derby.iapi.util.IdUtil; |
| 32 | import org.apache.derby.iapi.services.io.InputStreamUtil; |
| 33 | |
| 34 | class JarFile { |
| 35 | final String[] name; |
| 36 | protected ZipFile zip; |
| 37 | boolean isStream; |
| 38 | |
| 39 | JarFile() { |
| 40 | name = null; |
| 41 | } |
| 42 | |
| 43 | JarFile(String[] name) { |
| 44 | this.name = name; |
| 45 | } |
| 46 | |
| 47 | JarFile newJarFile(String[] name) { |
| 48 | return new JarFile(name); |
| 49 | } |
| 50 | |
| 51 | final String getJarName() { |
| 52 | return IdUtil.mkQualifiedName(name); |
| 53 | } |
| 54 | |
| 55 | |
| 56 | final boolean isZip() { |
| 57 | return zip != null; |
| 58 | } |
| 59 | |
| 60 | final ZipFile getZip() { |
| 61 | return zip; |
| 62 | } |
| 63 | |
| 64 | void initialize(File jarFile) throws IOException { |
| 65 | zip = new ZipFile(jarFile); |
| 66 | } |
| 67 | |
| 68 | final void setInvalid() { |
| 69 | if (zip != null) { |
| 70 | try { |
| 71 | zip.close(); |
| 72 | } catch (IOException ioe) { |
| 73 | } |
| 74 | zip = null; |
| 75 | |
| 76 | } |
| 77 | isStream = false; |
| 78 | } |
| 79 | |
| 80 | ZipEntry getEntry(String entryName) { |
| 81 | return zip.getEntry(entryName); |
| 82 | } |
| 83 | ZipInputStream getZipOnStream(InputStream in) throws IOException { |
| 84 | return new ZipInputStream(in); |
| 85 | } |
| 86 | ZipEntry getNextEntry(ZipInputStream in) throws IOException { |
| 87 | return in.getNextEntry(); |
| 88 | } |
| 89 | |
| 90 | byte[] readData(ZipEntry ze, InputStream in, String className) throws IOException { |
| 91 | |
| 92 | int size = (int) ze.getSize(); |
| 93 | |
| 94 | if (size != -1) { |
| 95 | byte[] data = new byte[size]; |
| 96 | |
| 97 | InputStreamUtil.readFully(in, data, 0, size); |
| 98 | |
| 99 | return data; |
| 100 | } |
| 101 | |
| 102 | // unknown size |
| 103 | byte[] data = new byte[1024]; |
| 104 | ByteArrayOutputStream os = new ByteArrayOutputStream(1024); |
| 105 | int r; |
| 106 | while ((r = in.read(data)) != -1) { |
| 107 | os.write(data, 0, r); |
| 108 | } |
| 109 | |
| 110 | data = os.toByteArray(); |
| 111 | return data; |
| 112 | } |
| 113 | |
| 114 | Object[] getSigners(String className, ZipEntry ze) throws IOException { |
| 115 | return null; |
| 116 | } |
| 117 | } |