1 /* |
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2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 package com.sun.tools.jdeps; |
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26 |
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27 import com.sun.tools.classfile.ClassFile; |
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28 import com.sun.tools.jdeps.ClassFileReader.ModuleClassReader; |
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29 import java.io.IOException; |
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30 import java.io.InputStream; |
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31 import java.io.BufferedInputStream; |
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32 import java.net.URI; |
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33 import java.nio.file.*; |
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34 import java.nio.file.attribute.BasicFileAttributes; |
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35 import java.util.*; |
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36 import java.util.stream.Collectors; |
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37 |
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38 /** |
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39 * ClassPath for Java SE and JDK |
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40 */ |
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41 class PlatformClassPath { |
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42 private static List<Archive> modules; |
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43 static synchronized List<Archive> getModules(Path mpath) throws IOException { |
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44 if (modules == null) { |
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45 initPlatformModules(mpath); |
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46 } |
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47 return modules; |
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48 } |
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49 |
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50 private static void initPlatformModules(Path mpath) throws IOException { |
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51 ImageHelper helper = ImageHelper.getInstance(mpath); |
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52 String fn = System.getProperty("jdeps.modules.xml"); |
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53 if (fn != null) { |
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54 Path p = Paths.get(fn); |
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55 try (InputStream in = new BufferedInputStream(Files.newInputStream(p))) { |
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56 modules = new ArrayList<>(ModulesXmlReader.load(helper, in)); |
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57 } |
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58 } else { |
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59 try (InputStream in = PlatformClassPath.class |
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60 .getResourceAsStream("resources/jdeps-modules.xml")) { |
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61 modules = new ArrayList<>(ModulesXmlReader.load(helper, in)); |
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62 } |
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63 } |
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64 if (findModule("java.base") != null) { |
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65 Profile.initProfiles(modules); |
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66 } |
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67 } |
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68 |
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69 /** |
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70 * Finds the module with the given name. Returns null |
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71 * if such module doesn't exist. |
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72 * |
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73 * @param mn module name |
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74 */ |
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75 static Module findModule(String mn) { |
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76 for (Archive a : modules) { |
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77 if (Module.class.isInstance(a)) { |
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78 Module m = (Module)a; |
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79 if (mn.equals(m.name())) { |
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80 return m; |
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81 } |
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82 } |
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83 } |
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84 return null; |
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85 } |
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86 |
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87 /** |
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88 * Returns JAR files in $java.home/lib. This is for transition until |
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89 * all components are linked into jimage. |
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90 */ |
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91 static List<Archive> getJarFiles() throws IOException { |
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92 Path home = Paths.get(System.getProperty("java.home"), "lib"); |
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93 return Files.find(home, 1, (Path p, BasicFileAttributes attr) |
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94 -> p.getFileName().toString().endsWith(".jar")) |
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95 .map(Archive::getInstance) |
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96 .collect(Collectors.toList()); |
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97 } |
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98 |
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99 static class ImageHelper { |
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100 static ImageHelper getInstance(Path mpath) throws IOException { |
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101 if (mpath != null) { |
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102 return new ImageHelper(mpath); |
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103 } |
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104 Path home = Paths.get(System.getProperty("java.home")); |
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105 Path mlib = home.resolve("lib").resolve("modules"); |
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106 if (Files.isDirectory(mlib)) { |
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107 // jimage |
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108 FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/")); |
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109 return new ImageHelper(fs, fs.getPath("/")); |
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110 } else { |
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111 // exploded modules |
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112 mlib = home.resolve("modules"); |
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113 if (!Files.isDirectory(mlib)) { |
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114 throw new InternalError(home + " not a modular image"); |
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115 } |
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116 return new ImageHelper(mlib); |
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117 } |
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118 } |
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119 |
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120 private final FileSystem fs; |
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121 private final Path mpath; |
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122 |
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123 ImageHelper(Path path) throws IOException { |
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124 this(FileSystems.getDefault(), path); |
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125 } |
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126 |
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127 ImageHelper(FileSystem fs, Path path) throws IOException { |
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128 this.fs = fs; |
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129 this.mpath = path; |
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130 } |
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131 |
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132 /** |
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133 * Returns a ModuleClassReader that only reads classes for the given modulename. |
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134 */ |
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135 public ModuleClassReader getModuleClassReader(String modulename) |
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136 throws IOException |
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137 { |
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138 Path mp = mpath.resolve(modulename); |
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139 if (Files.exists(mp) && Files.isDirectory(mp)) { |
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140 return new ModuleClassReader(fs, modulename, mp); |
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141 } else { |
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142 // aggregator module or os-specific module in jdeps-modules.xml |
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143 // mdir not exist |
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144 return new NonExistModuleReader(fs, modulename, mp); |
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145 } |
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146 } |
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147 |
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148 static class NonExistModuleReader extends ModuleClassReader { |
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149 private final List<ClassFile> classes = Collections.emptyList(); |
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150 |
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151 private NonExistModuleReader(FileSystem fs, String mn, Path mpath) |
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152 throws IOException |
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153 { |
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154 super(fs, mn, mpath); |
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155 } |
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156 |
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157 public ClassFile getClassFile(String name) throws IOException { |
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158 return null; |
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159 } |
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160 |
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161 public Iterable<ClassFile> getClassFiles() throws IOException { |
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162 return classes; |
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163 } |
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164 |
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165 public Set<String> packages() { |
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166 return Collections.emptySet(); |
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167 } |
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168 } |
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169 } |
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170 } |
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