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Java > Open Source Codes > com > jeantessier > dependencyfinder > cli > ClassList


1 /*
2  * Copyright (c) 2001-2005, Jean Tessier
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * * Neither the name of Jean Tessier nor the names of his contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */

32
33 package com.jeantessier.dependencyfinder.cli;
34
35 import java.io.*;
36 import java.util.*;
37
38 import org.apache.log4j.*;
39
40 import com.jeantessier.classreader.*;
41 import com.jeantessier.commandline.*;
42 import com.jeantessier.dependencyfinder.*;
43
44 public class ClassList {
45     public static final String JavaDoc DEFAULT_LOGFILE = "System.out";
46
47     public static void showError(CommandLineUsage clu, String JavaDoc msg) {
48         System.err.println(msg);
49         showError(clu);
50     }
51
52     public static void showError(CommandLineUsage clu) {
53         System.err.println(clu);
54         System.err.println();
55         System.err.println("If no files are specified, it processes the current directory.");
56         System.err.println();
57     }
58
59     public static void showVersion() throws IOException {
60         Version version = new Version();
61         
62         System.err.print(version.getImplementationTitle());
63         System.err.print(" ");
64         System.err.print(version.getImplementationVersion());
65         System.err.print(" (c) ");
66         System.err.print(version.getCopyrightDate());
67         System.err.print(" ");
68         System.err.print(version.getCopyrightHolder());
69         System.err.println();
70         
71         System.err.print(version.getImplementationURL());
72         System.err.println();
73         
74         System.err.print("Compiled on ");
75         System.err.print(version.getImplementationDate());
76         System.err.println();
77     }
78
79     public static void main(String JavaDoc[] args) throws Exception JavaDoc {
80         // Parsing the command line
81
CommandLine commandLine = new CommandLine();
82         commandLine.addToggleSwitch("time");
83         commandLine.addSingleValueSwitch("out");
84         commandLine.addToggleSwitch("help");
85         commandLine.addOptionalValueSwitch("verbose", DEFAULT_LOGFILE);
86         commandLine.addToggleSwitch("version");
87
88         CommandLineUsage usage = new CommandLineUsage("ClassList");
89         commandLine.accept(usage);
90
91         try {
92             commandLine.parse(args);
93         } catch (IllegalArgumentException JavaDoc ex) {
94             showError(usage, ex.toString());
95             System.exit(1);
96         } catch (CommandLineException ex) {
97             showError(usage, ex.toString());
98             System.exit(1);
99         }
100
101         if (commandLine.getToggleSwitch("help")) {
102             showError(usage);
103         }
104         
105         if (commandLine.getToggleSwitch("version")) {
106             showVersion();
107         }
108
109         if (commandLine.getToggleSwitch("help") || commandLine.getToggleSwitch("version")) {
110             System.exit(1);
111         }
112
113         VerboseListener verboseListener = new VerboseListener();
114         if (commandLine.isPresent("verbose")) {
115             if ("System.out".equals(commandLine.getOptionalSwitch("verbose"))) {
116                 verboseListener.setWriter(System.out);
117             } else {
118                 verboseListener.setWriter(new FileWriter(commandLine.getOptionalSwitch("verbose")));
119             }
120         }
121
122         /*
123          * Beginning of main processing
124          */

125
126         Date start = new Date();
127
128         PrintWriter out;
129         if (commandLine.isPresent("out")) {
130             out = new PrintWriter(new FileWriter(commandLine.getSingleSwitch("out")));
131         } else {
132             out = new PrintWriter(new OutputStreamWriter(System.out));
133         }
134
135         List parameters = commandLine.getParameters();
136         if (parameters.size() == 0) {
137             parameters.add(".");
138         }
139
140         Iterator i = parameters.iterator();
141         while (i.hasNext()) {
142             String JavaDoc filename = (String JavaDoc) i.next();
143
144             out.println(filename + ":");
145             
146             ClassfileLoader loader = new AggregatingClassfileLoader();
147             loader.addLoadListener(verboseListener);
148             loader.load(Collections.singleton(filename));
149
150             Iterator j = loader.getAllClassfiles().iterator();
151             while (j.hasNext()) {
152                 out.println(j.next());
153             }
154
155             out.println();
156         }
157
158         Date end = new Date();
159
160         if (commandLine.getToggleSwitch("time")) {
161             System.err.println(ClassList.class.getName() + ": " + ((end.getTime() - (double) start.getTime()) / 1000) + " secs.");
162         }
163
164         out.close();
165
166         verboseListener.close();
167     }
168 }
169
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