1 /*
2 * Copyright (c) 2008, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package build.tools.logutil;
27
28 import java.io.BufferedReader;
29 import java.io.File;
30 import java.io.FileInputStream;
31 import java.io.FileNotFoundException;
32 import java.io.InputStreamReader;
33 import java.io.IOException;
34
35 import java.util.LinkedList;
36 import java.util.Queue;
37
38 import java.util.regex.Matcher;
39 import java.util.regex.Pattern;
40
41 public class Input {
42
43 /**
44 * The name of the package this class will inhabit.
45 */
46 private String packageName;
47
48 /**
49 * The name of the generated class.
50 */
51 private String className;
52
53 /**
54 * The name of the group of exceptions handled by the class.
55 */
56 private String groupName;
57
58 /**
59 * The group of exceptions.
60 */
61 private Queue<InputException> exceptions;
62
63 /**
64 * Represents the current state of parsing the input.
65 */
66 private enum State
67 {
68 OUTER,
69 IN_CLASS,
70 IN_EXCEPTION_LIST
71 };
72
73 /**
74 * Regular expression to match each code line.
75 */
76 private static final Pattern EXCEPTION_INFO_REGEX =
77 Pattern.compile("(\\w+)\\s*(\\d+)\\s*(\\w+)");
78
79 /**
80 * Parses the specified file to create a new {@link Input}
81 * object.
82 *
83 * @param filename the file to parse.
84 * @throws FileNotFoundException if the file can't be found.
85 * @throws IOException if an I/O error occurs.
86 */
87 public Input(final String filename)
88 throws FileNotFoundException, IOException {
89 BufferedReader r =
90 new BufferedReader(new InputStreamReader(new FileInputStream(filename)));
91 State state = State.OUTER;
92 InputException current = null;
93 exceptions = new LinkedList<InputException>();
94 String line;
95 while ((line = r.readLine()) != null) {
96 // Skip ; comments
97 if (line.startsWith(";"))
98 continue;
99
100 int index = line.indexOf("(");
101 if (index == -1)
102 continue;
103
104 switch (state) {
105 case OUTER:
106 state = State.IN_CLASS;
107 String[] classInfo = line.substring(index).split(" ");
108 packageName = classInfo[0].substring(2, classInfo[0].length() - 1);
109 className = classInfo[1].substring(1, classInfo[1].length() - 1);
110 groupName = classInfo[2];
111 break;
112 case IN_CLASS:
113 state = State.IN_EXCEPTION_LIST;
114 break;
115 case IN_EXCEPTION_LIST:
116 boolean inQuote = false;
117 boolean inCode = false;
118 boolean end = false;
119 int start = index + 1;
120 Queue<String> lines = new LinkedList<String>();
121 for (int a = start; a < line.length(); ++a) {
122 if (line.charAt(a) == '(' && !inCode && !inQuote) {
123 if (current == null)
124 current =
125 new InputException(line.substring(start, a).trim());
126 start = a + 1;
127 inCode = true;
128 }
129 if (line.charAt(a) == '"')
130 inQuote = !inQuote;
131 if (line.charAt(a) == ')' && !inQuote) {
132 if (inCode) {
133 lines.offer(line.substring(start, a));
134 inCode = false;
135 } else
136 end = true;
137 }
138 if (!end && a == line.length() - 1)
139 line += r.readLine();
140 }
141 for (String l : lines) {
142 int stringStart = l.indexOf("\"") + 1;
143 int stringEnd = l.indexOf("\"", stringStart);
144 Matcher matcher = EXCEPTION_INFO_REGEX.matcher(l.substring(0, stringStart));
145 if (matcher.find())
146 current.add(new InputCode(matcher.group(1),
147 Integer.parseInt(matcher.group(2)),
148 matcher.group(3),
149 l.substring(stringStart, stringEnd)));
150 }
151 exceptions.offer(current);
152 current = null;
153 break;
154 }
155 }
156 }
157
158 /**
159 * Returns the name of this group of exceptions.
160 *
161 * @return the name of this group of exceptions.
162 */
163 public String getGroupName()
164 {
165 return groupName;
166 }
167
168 /**
169 * Returns the name of the package this class will go in.
170 *
171 * @return the name of the package.
172 */
173 public String getPackageName()
174 {
175 return packageName;
176 }
177
178 /**
179 * Returns the name of the generated class.
180 *
181 * @return the name of the class.
182 */
183 public String getClassName()
184 {
185 return className;
186 }
187
188 /**
189 * Returns the exceptions contained in this class.
190 *
191 * @return the exceptions.
192 */
193 public Queue<InputException> getExceptions() {
194 return exceptions;
195 }
196
197 /**
198 * Returns a textual representation of this input.
199 *
200 * @return a textual representation.
201 */
202 public String toString() {
203 return getClass().getName() +
204 "[packageName=" + packageName +
205 ",className=" + className +
206 ",groupName=" + groupName +
207 ",exceptions=" + exceptions +
208 "]";
209 }
210
211 }