J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1995-2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.tools.java; |
| 27 | |
| 28 | import java.util.Enumeration; |
| 29 | import java.io.File; |
| 30 | import java.io.IOException; |
| 31 | |
| 32 | /** |
| 33 | * This class is used to represent the classes in a package. |
| 34 | * |
| 35 | * WARNING: The contents of this source file are not part of any |
| 36 | * supported API. Code that depends on them does so at its own risk: |
| 37 | * they are subject to change or removal without notice. |
| 38 | */ |
| 39 | public |
| 40 | class Package { |
| 41 | /** |
| 42 | * The path which we use to locate source files. |
| 43 | */ |
| 44 | ClassPath sourcePath; |
| 45 | |
| 46 | /** |
| 47 | * The path which we use to locate class (binary) files. |
| 48 | */ |
| 49 | ClassPath binaryPath; |
| 50 | |
| 51 | /** |
| 52 | * The path name of the package. |
| 53 | */ |
| 54 | String pkg; |
| 55 | |
| 56 | /** |
| 57 | * Create a package given a class path, and package name. |
| 58 | */ |
| 59 | public Package(ClassPath path, Identifier pkg) throws IOException { |
| 60 | this(path, path, pkg); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Create a package given a source path, binary path, and package |
| 65 | * name. |
| 66 | */ |
| 67 | public Package(ClassPath sourcePath, |
| 68 | ClassPath binaryPath, |
| 69 | Identifier pkg) |
| 70 | throws IOException { |
| 71 | if (pkg.isInner()) |
| 72 | pkg = Identifier.lookup(pkg.getQualifier(), pkg.getFlatName()); |
| 73 | this.sourcePath = sourcePath; |
| 74 | this.binaryPath = binaryPath; |
| 75 | this.pkg = pkg.toString().replace('.', File.separatorChar); |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Check if a class is defined in this package. |
| 80 | * (If it is an inner class name, it is assumed to exist |
| 81 | * only if its binary file exists. This is somewhat pessimistic.) |
| 82 | */ |
| 83 | public boolean classExists(Identifier className) { |
| 84 | return getBinaryFile(className) != null || |
| 85 | !className.isInner() && |
| 86 | getSourceFile(className) != null; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Check if the package exists |
| 91 | */ |
| 92 | public boolean exists() { |
| 93 | // Look for the directory on our binary path. |
| 94 | ClassFile dir = binaryPath.getDirectory(pkg); |
| 95 | if (dir != null && dir.isDirectory()) { |
| 96 | return true; |
| 97 | } |
| 98 | |
| 99 | if (sourcePath != binaryPath) { |
| 100 | // Look for the directory on our source path. |
| 101 | dir = sourcePath.getDirectory(pkg); |
| 102 | if (dir != null && dir.isDirectory()) { |
| 103 | return true; |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /* Accommodate ZIP files without CEN entries for directories |
| 108 | * (packages): look on class path for at least one binary |
| 109 | * file or one source file with the right package prefix |
| 110 | */ |
| 111 | String prefix = pkg + File.separator; |
| 112 | |
| 113 | return binaryPath.getFiles(prefix, ".class").hasMoreElements() |
| 114 | || sourcePath.getFiles(prefix, ".java").hasMoreElements(); |
| 115 | } |
| 116 | |
| 117 | private String makeName(String fileName) { |
| 118 | return pkg.equals("") ? fileName : pkg + File.separator + fileName; |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Get the .class file of a class |
| 123 | */ |
| 124 | public ClassFile getBinaryFile(Identifier className) { |
| 125 | className = Type.mangleInnerType(className); |
| 126 | String fileName = className.toString() + ".class"; |
| 127 | return binaryPath.getFile(makeName(fileName)); |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Get the .java file of a class |
| 132 | */ |
| 133 | public ClassFile getSourceFile(Identifier className) { |
| 134 | // The source file of an inner class is that of its outer class. |
| 135 | className = className.getTopName(); |
| 136 | String fileName = className.toString() + ".java"; |
| 137 | return sourcePath.getFile(makeName(fileName)); |
| 138 | } |
| 139 | |
| 140 | public ClassFile getSourceFile(String fileName) { |
| 141 | if (fileName.endsWith(".java")) { |
| 142 | return sourcePath.getFile(makeName(fileName)); |
| 143 | } |
| 144 | return null; |
| 145 | } |
| 146 | |
| 147 | public Enumeration getSourceFiles() { |
| 148 | return sourcePath.getFiles(pkg, ".java"); |
| 149 | } |
| 150 | |
| 151 | public Enumeration getBinaryFiles() { |
| 152 | return binaryPath.getFiles(pkg, ".class"); |
| 153 | } |
| 154 | |
| 155 | public String toString() { |
| 156 | if (pkg.equals("")) { |
| 157 | return "unnamed package"; |
| 158 | } |
| 159 | return "package " + pkg; |
| 160 | } |
| 161 | } |