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 private final String pathname;
43 protected final String name;
44 private Module module;
45
46 ResourceFile(String fname) {
47 this.pathname = fname.replace('/', File.separatorChar);
48 this.name = fname.replace(File.separatorChar, '/');
49 }
50
51 Module getModule() {
52 return module;
53 }
54
55 void setModule(Module m) {
56 if (module != null) {
57 throw new RuntimeException("Module for " + this + " already set");
58 }
59 this.module = m;
60 }
61
62 String getName() {
63 return name;
64 }
65
66 String getPathname() {
67 return pathname;
68 }
69
70 @Override
71 public String toString() {
72 return name;
73 }
74
75 @Override
76 public int compareTo(ResourceFile o) {
77 return name.compareTo(o.name);
78 }
79
80 static Set<ResourceFile> resources = new TreeSet<ResourceFile>();
81
82 static boolean isResource(String pathname) {
83 String name = pathname.replace(File.separatorChar, '/');
84 if (name.endsWith("META-INF/MANIFEST.MF")) {
85 return false;
86 }
87 if (name.contains("META-INF/JCE_RSA.")) {
88 return false;
89 }
90
91 return true;
92 }
93
94 static ResourceFile addResource(String fname, InputStream in) {
95 ResourceFile res;
96 fname = fname.replace(File.separatorChar, '/');
97 if (fname.startsWith("META-INF/services")) {
98 res = new ServiceProviderConfigFile(fname, in);
99 } else {
100 res = new ResourceFile(fname);
101 }
102 resources.add(res);
103 return res;
104 }
105
106 static Set<ResourceFile> getAllResources() {
107 return Collections.unmodifiableSet(resources);
108 }
109
110 static class ServiceProviderConfigFile extends ResourceFile {
111 final List<String> providers = new ArrayList<String>();
112 final String service;
113 ServiceProviderConfigFile(String fname, InputStream in) {
114 super(fname);
115 readServiceConfiguration(in, providers);
116 this.service = name.substring("META-INF/services".length() + 1, name.length());
117 }
118
119 @Override
120 String getName() {
121 if (providers.isEmpty()) {
122 return service;
123 } else {
124 // just use the first one for matching
125 return providers.get(0);
126 }
127 }
128
129 @Override
130 public boolean equals(Object o) {
131 if (o instanceof ServiceProviderConfigFile) {
132 ServiceProviderConfigFile sp = (ServiceProviderConfigFile) o;
133 if (service.equals(sp.service) && providers.size() == sp.providers.size()) {
134 List<String> tmp = new ArrayList<String>(providers);
135 if (tmp.removeAll(sp.providers)) {
136 return tmp.size() == 0;
137 }
138 }
139 }
140 return false;
141 }
142
143 public int hashCode() {
144 int hash = 7;
145 hash = 73 * hash + (this.providers != null ? this.providers.hashCode() : 0);
146 hash = 73 * hash + (this.service != null ? this.service.hashCode() : 0);
147 return hash;
148 }
149
150 @Override
151 public int compareTo(ResourceFile o) {
152 if (this.equals(o)) {
153 return 0;
154 } else {
155 if (getName().compareTo(o.getName()) < 0) {
156 return -1;
157 } else {
158 return 1;
159 }
160 }
161 }
162
163 @SuppressWarnings("empty-statement")
164 void readServiceConfiguration(InputStream in, List<String> names) {
165 BufferedReader br = null;
166 try {
167 if (in != null) {
168 // Properties doesn't perserve the order of the input file
169 br = new BufferedReader(new InputStreamReader(in, "utf-8"));
170 int lc = 1;
171 while ((lc = parseLine(br, lc, names)) >= 0);
172 }
173 } catch (IOException ex) {
174 throw new RuntimeException(ex);
175 } finally {
176 if (br != null) {
177 try {
178 br.close();
179 } catch (IOException ex) {
180 throw new RuntimeException(ex);
181 }
182 }
183 }
184 }
185
186 // Parse a single line from the given configuration file, adding the name
187 // on the line to the names list.
188 //
189 private int parseLine(BufferedReader r, int lc, List<String> names) throws IOException {
190 String ln = r.readLine();
191 if (ln == null) {
192 return -1;
193 }
194 int ci = ln.indexOf('#');
195 if (ci >= 0) {
196 ln = ln.substring(0, ci);
197 }
198 ln = ln.trim();
199 int n = ln.length();
200 if (n != 0) {
201 if ((ln.indexOf(' ') >= 0) || (ln.indexOf('\t') >= 0)) {
202 throw new RuntimeException("Illegal configuration-file syntax");
203 }
204 int cp = ln.codePointAt(0);
205 if (!Character.isJavaIdentifierStart(cp)) {
206 throw new RuntimeException("Illegal provider-class name: " + ln);
207 }
208 for (int i = Character.charCount(cp); i < n; i += Character.charCount(cp)) {
209 cp = ln.codePointAt(i);
210 if (!Character.isJavaIdentifierPart(cp) && (cp != '.')) {
211 throw new RuntimeException("Illegal provider-class name: " + ln);
212 }
213 }
214 if (!names.contains(ln)) {
215 names.add(ln);
216 }
217 }
218 return lc + 1;
219 }
220 }
221 }