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 */
40 public class ResourceFile implements Comparable<ResourceFile> {
41 private final String pathname;
42 private final long filesize;
43 protected final String name;
44 private Module module;
45
46 ResourceFile(String fname) {
47 this(fname, 0);
48 }
49
50 ResourceFile(String fname, long size) {
51 this.pathname = fname.replace('/', File.separatorChar);
52 this.name = fname.replace(File.separatorChar, '/');
53 this.filesize = size;
54 }
55
56 Module getModule() {
57 return module;
58 }
59
60 void setModule(Module m) {
61 if (module != null) {
62 throw new RuntimeException("Module for " + this + " already set");
63 }
64 this.module = m;
65 }
66
67 String getName() {
68 return name;
69 }
70
71 String getPathname() {
72 return pathname;
73 }
74
75 long getFileSize() {
76 return filesize;
77 }
78
79 boolean isService() {
80 return pathname.startsWith("META-INF/services") ? true : false;
81 }
82
83 @Override
84 public String toString() {
85 return name;
86 }
87
88 @Override
89 public int compareTo(ResourceFile o) {
90 return name.compareTo(o.name);
91 }
92
93 private static Set<ResourceFile> resources = new TreeSet<ResourceFile>();
94
95 static boolean isResource(String pathname) {
96 // skip these files
97 String name = pathname.replace(File.separatorChar, '/');
98 if (name.endsWith("META-INF/MANIFEST.MF")) {
99 return false;
100 }
101 if (name.contains("META-INF/JCE_RSA.")) {
102 return false;
103 }
104 if (name.contains("META-INF/") &&
105 (name.endsWith(".RSA") || name.endsWith(".SF"))) {
106 return false;
107 }
108
109 return true;
110 }
111
112 static ResourceFile getResource(String fname, InputStream in, long size) {
113 ResourceFile res;
114 fname = fname.replace(File.separatorChar, '/');
115 if (fname.startsWith("META-INF/services")) {
116 res = new ServiceProviderConfigFile(fname, in, size);
117 } else {
118 res = new ResourceFile(fname, size);
119 }
120 return res;
121 }
122
123 static ResourceFile addResource(String fname, InputStream in, long size) {
124 ResourceFile res = getResource(fname, in, size);
125 resources.add(res);
126 return res;
127 }
128
129
130 static Set<ResourceFile> getAllResources() {
131 return Collections.unmodifiableSet(resources);
132 }
133
134 static class ServiceProviderConfigFile extends ResourceFile {
135 final List<String> providers = new ArrayList<String>();
136 final String service;
137
138 ServiceProviderConfigFile(String fname, InputStream in) {
139 this(fname, in, 0);
140 }
141
142 ServiceProviderConfigFile(String fname, InputStream in, long size) {
143 super(fname, size);
144 readServiceConfiguration(in, providers);
145 this.service = name.substring("META-INF/services".length() + 1, name.length());
146 }
147
148 @Override
149 boolean isService() {
150 return true;
151 }
152
153 @Override
154 String getName() {
155 if (providers.isEmpty()) {
156 return service;
157 } else {
158 // just use the first one for matching
159 return providers.get(0);
160 }
161 }
162
163 @Override
164 public boolean equals(Object o) {
165 if (o instanceof ServiceProviderConfigFile) {
166 ServiceProviderConfigFile sp = (ServiceProviderConfigFile) o;
167 if (service.equals(sp.service) && providers.size() == sp.providers.size()) {
168 List<String> tmp = new ArrayList<String>(providers);
169 if (tmp.removeAll(sp.providers)) {
170 return tmp.size() == 0;
171 }
172 }
173 }
174 return false;
175 }
176
177 public int hashCode() {
178 int hash = 7;
179 hash = 73 * hash + (this.providers != null ? this.providers.hashCode() : 0);
180 hash = 73 * hash + (this.service != null ? this.service.hashCode() : 0);
181 return hash;
182 }
183
184 @Override
185 public int compareTo(ResourceFile o) {
186 if (this.equals(o)) {
187 return 0;
188 } else {
189 if (getName().compareTo(o.getName()) < 0) {
190 return -1;
191 } else {
192 return 1;
193 }
194 }
195 }
196
197 @SuppressWarnings("empty-statement")
198 void readServiceConfiguration(InputStream in, List<String> names) {
199 BufferedReader br = null;
200 try {
201 if (in != null) {
202 // Properties doesn't perserve the order of the input file
203 br = new BufferedReader(new InputStreamReader(in, "utf-8"));
204 int lc = 1;
205 while ((lc = parseLine(br, lc, names)) >= 0);
206 }
207 } catch (IOException ex) {
208 throw new RuntimeException(ex);
209 } finally {
210 if (br != null) {
211 try {
212 br.close();
213 } catch (IOException ex) {
214 throw new RuntimeException(ex);
215 }
216 }
217 }
218 }
219
220 // Parse a single line from the given configuration file, adding the name
221 // on the line to the names list.
222 //
223 private int parseLine(BufferedReader r, int lc, List<String> names) throws IOException {
224 String ln = r.readLine();
225 if (ln == null) {
226 return -1;
227 }
228 int ci = ln.indexOf('#');
229 if (ci >= 0) {
230 ln = ln.substring(0, ci);
231 }
232 ln = ln.trim();
233 int n = ln.length();
234 if (n != 0) {
235 if ((ln.indexOf(' ') >= 0) || (ln.indexOf('\t') >= 0)) {
236 throw new RuntimeException("Illegal configuration-file syntax");
237 }
238 int cp = ln.codePointAt(0);
239 if (!Character.isJavaIdentifierStart(cp)) {
240 throw new RuntimeException("Illegal provider-class name: " + ln);
241 }
242 for (int i = Character.charCount(cp); i < n; i += Character.charCount(cp)) {
243 cp = ln.codePointAt(i);
244 if (!Character.isJavaIdentifierPart(cp) && (cp != '.')) {
245 throw new RuntimeException("Illegal provider-class name: " + ln);
246 }
247 }
248 if (!names.contains(ln)) {
249 names.add(ln);
250 }
251 }
252 return lc + 1;
253 }
254 }
255 }