1 /*

     2  * Copyright (c) 2009, 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.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 package com.sun.classanalyzer;

    25 

    26 import java.io.BufferedReader;

    27 import java.io.File;

    28 import java.io.IOException;

    29 import java.io.InputStream;

    30 import java.io.InputStreamReader;

    31 import java.util.ArrayList;

    32 import java.util.Collections;

    33 import java.util.List;

    34 import java.util.Set;

    35 import java.util.TreeSet;

    36 

    37 /**

    38  *

    39  * @author Mandy Chung

    40  */

    41 public class ResourceFile implements Comparable<ResourceFile> {

    42 

    43     private final String pathname;

    44     private Module module;

    45 

    46     ResourceFile(String pathname) {

    47         this.pathname = pathname.replace(File.separatorChar, '/');

    48     }

    49 

    50     Module getModule() {

    51         return module;

    52     }

    53 

    54     void setModule(Module m) {

    55         if (module != null) {

    56             throw new RuntimeException("Module for " + this + " already set");

    57         }

    58         this.module = m;

    59     }

    60 

    61     String getName() {

    62         return pathname;

    63     }

    64 

    65     String getPathname() {

    66         return pathname;

    67     }

    68 

    69     @Override

    70     public String toString() {

    71         return pathname;

    72     }

    73 

    74     @Override

    75     public int compareTo(ResourceFile o) {

    76         return pathname.compareTo(o.pathname);

    77     }

    78     static Set<ResourceFile> resources = new TreeSet<ResourceFile>();

    79 

    80     static boolean isResource(String pathname) {

    81         String name = pathname.replace(File.separatorChar, '/');

    82 

    83         if (name.endsWith("META-INF/MANIFEST.MF")) {

    84             return false;

    85         }

    86         if (name.contains("META-INF/JCE_RSA.")) {

    87             return false;

    88         }

    89 

    90         return true;

    91     }

    92 

    93     static void addResource(String name, InputStream in) {

    94         ResourceFile res;

    95         name = name.replace(File.separatorChar, '/');

    96         if (name.startsWith("META-INF/services")) {

    97             res = new ServiceProviderConfigFile(name, in);

    98         } else {

    99             res = new ResourceFile(name);

   100         }

   101         resources.add(res);

   102     }

   103 

   104     static Set<ResourceFile> getAllResources() {

   105         return Collections.unmodifiableSet(resources);

   106     }

   107 

   108     static class ServiceProviderConfigFile extends ResourceFile {

   109 

   110         private final List<String> providers = new ArrayList<String>();

   111         private final String service;

   112         ServiceProviderConfigFile(String pathname, InputStream in) {

   113             super(pathname);

   114             readServiceConfiguration(in, providers);

   115             this.service = pathname.substring("META-INF/services".length() + 1, pathname.length());

   116         }

   117 

   118         @Override

   119         String getName() {

   120             if (providers.isEmpty()) {

   121                 return service;

   122             } else {

   123                 // just use the first one for matching

   124                 return providers.get(0);

   125             }

   126         }

   127 

   128         @SuppressWarnings("empty-statement")

   129         void readServiceConfiguration(InputStream in, List<String> names) {

   130             BufferedReader br = null;

   131             try {

   132                 if (in != null) {

   133                     // Properties doesn't perserve the order of the input file

   134                     br = new BufferedReader(new InputStreamReader(in, "utf-8"));

   135                     int lc = 1;

   136                     while ((lc = parseLine(br, lc, names)) >= 0);

   137                 }

   138             } catch (IOException ex) {

   139                 throw new RuntimeException(ex);

   140             } finally {

   141                 if (br != null) {

   142                     try {

   143                         br.close();

   144                     } catch (IOException ex) {

   145                         throw new RuntimeException(ex);

   146                     }

   147                 }

   148             }

   149         }

   150 

   151         // Parse a single line from the given configuration file, adding the name

   152         // on the line to the names list.

   153         //

   154         private int parseLine(BufferedReader r, int lc, List<String> names) throws IOException {

   155             String ln = r.readLine();

   156             if (ln == null) {

   157                 return -1;

   158             }

   159             int ci = ln.indexOf('#');

   160             if (ci >= 0) {

   161                 ln = ln.substring(0, ci);

   162             }

   163             ln = ln.trim();

   164             int n = ln.length();

   165             if (n != 0) {

   166                 if ((ln.indexOf(' ') >= 0) || (ln.indexOf('\t') >= 0)) {

   167                     throw new RuntimeException("Illegal configuration-file syntax");

   168                 }

   169                 int cp = ln.codePointAt(0);

   170                 if (!Character.isJavaIdentifierStart(cp)) {

   171                     throw new RuntimeException("Illegal provider-class name: " + ln);

   172                 }

   173                 for (int i = Character.charCount(cp); i < n; i += Character.charCount(cp)) {

   174                     cp = ln.codePointAt(i);

   175                     if (!Character.isJavaIdentifierPart(cp) && (cp != '.')) {

   176                         throw new RuntimeException("Illegal provider-class name: " + ln);

   177                     }

   178                 }

   179                 if (!names.contains(ln)) {

   180                     names.add(ln);

   181                 }

   182             }

   183             return lc + 1;

   184         }

   185     }

   186 }