1 /*
2 $Id: GroovyStarter.java,v 1.4 2005/08/29 10:49:42 blackdrag Exp $
3
4 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
5
6 Redistribution and use of this software and associated documentation
7 ("Software"), with or without modification, are permitted provided
8 that the following conditions are met:
9
10 1. Redistributions of source code must retain copyright
11 statements and notices. Redistributions must also contain a
12 copy of this document.
13
14 2. Redistributions in binary form must reproduce the
15 above copyright notice, this list of conditions and the
16 following disclaimer in the documentation and/or other
17 materials provided with the distribution.
18
19 3. The name "groovy" must not be used to endorse or promote
20 products derived from this Software without prior written
21 permission of The Codehaus. For written permission,
22 please contact info@codehaus.org.
23
24 4. Products derived from this Software may not be called "groovy"
25 nor may "groovy" appear in their names without prior written
26 permission of The Codehaus. "groovy" is a registered
27 trademark of The Codehaus.
28
29 5. Due credit should be given to The Codehaus -
30 http://groovy.codehaus.org/
31
32 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
33 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
34 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
35 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
36 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43 OF THE POSSIBILITY OF SUCH DAMAGE.
44
45 */
46 package org.codehaus.groovy.tools;
47
48 import java.lang.reflect .*;
49 import java.io.FileInputStream;
50
51
52
53 /***
54 * Helper class to help classworlds to load classes.
55 */
56 public class GroovyStarter {
57
58 static void printUsage() {
59 System.out.println("possible programs are 'groovyc','groovy','console','grok' and 'groovysh'");
60 System.exit(1);
61 }
62
63
64 public static void rootLoader(String args[]) {
65 String conf = System.getProperty("groovy.launcher.conf",null);
66 LoaderConfiguration lc = new LoaderConfiguration();
67
68 // evaluate parameters
69 boolean hadMain=false, hadConf=false, hadCP=false;
70 int argsOffset = 0;
71 while (args.length-argsOffset>0 && !(hadMain && hadConf && hadCP)) {
72 if (args[argsOffset].equals("--classpath")) {
73 if (hadCP) break;
74 if (args.length==argsOffset+1) {
75 exit("classpath parameter needs argument");
76 }
77 lc.addClassPath(args[argsOffset+1]);
78 argsOffset+=2;
79 } else if (args[argsOffset].equals("--main")) {
80 if (hadMain) break;
81 if (args.length==argsOffset+1) {
82 exit("main parameter needs argument");
83 }
84 lc.setMainClass(args[argsOffset+1]);
85 argsOffset+=2;
86 } else if (args[argsOffset].equals("--conf")) {
87 if (hadConf) break;
88 if (args.length==argsOffset+1) {
89 exit("conf parameter needs argument");
90 }
91 conf=args[argsOffset+1];
92 argsOffset+=2;
93 } else {
94 break;
95 }
96 }
97
98 // we need to know the class we want to start
99 if (lc.getMainClass()==null && conf==null) {
100 exit("no configuration file or main class specified");
101 }
102
103 // copy arguments for main class
104 String[] newArgs = new String[args.length-argsOffset];
105 for (int i=0; i<newArgs.length; i++) {
106 newArgs[i] = args[i+argsOffset];
107 }
108 // load configuration file
109 if (conf!=null) {
110 try {
111 lc.configure(new FileInputStream(conf));
112 } catch (Exception e) {
113 System.err.println("exception while configuring main class loader:");
114 exit(e);
115 }
116 }
117 // create loader and execute main class
118 ClassLoader loader = new RootLoader(lc);
119 Method m=null;
120 try {
121 Class c = loader.loadClass(lc.getMainClass());
122 m = c.getMethod("main", new Class[]{String[].class});
123 } catch (ClassNotFoundException e1) {
124 exit(e1);
125 } catch (SecurityException e2) {
126 exit(e2);
127 } catch (NoSuchMethodException e2) {
128 exit(e2);
129 }
130 try {
131 m.invoke(null, new Object[]{newArgs});
132 } catch (IllegalArgumentException e3) {
133 exit(e3);
134 } catch (IllegalAccessException e3) {
135 exit(e3);
136 } catch (InvocationTargetException e3) {
137 exit(e3);
138 }
139 }
140
141 private static void exit(Exception e) {
142 e.printStackTrace();
143 System.exit(1);
144 }
145
146 private static void exit(String msg) {
147 System.err.println(msg);
148 System.exit(1);
149 }
150
151 // after migration from classworlds to the rootloader rename
152 // the rootLoader method to main and remove this method as
153 // well as the classworlds method
154 /* public static void main(String args[],ClassWorld classWorld ) {
155 classworlds(args,classWorld);
156 }*/
157
158 public static void main(String args[]) {
159 try {
160 rootLoader(args);
161 } catch (Throwable t) {
162 t.printStackTrace();
163 }
164 }
165
166 /*public static void classworlds(String oldArgs[],ClassWorld classWorld ) {
167 try {
168 // Creates a realm with *just* the system classloader
169 ClassRealm system = classWorld.newRealm("system");
170
171 // Get the groovy realm
172 ClassRealm groovy = classWorld.getRealm("groovy");
173
174 // import everything from the system realm, because imports
175 // are searched *first* in Classworlds
176 groovy.importFrom("system", "");
177
178 //add tools.jar to classpath
179 String tools = System.getProperty("tools.jar");
180 if (tools!=null) {
181 URL ref = (new File(tools)).toURI().toURL();
182 groovy.addConstituent(ref);
183 }
184
185 if (oldArgs.length==0) {
186 printUsage();
187 System.exit(1);
188 }
189
190 String program = oldArgs[0].toLowerCase();
191 String[] args = new String[oldArgs.length-1];
192 for (int i=0; i<args.length; i++) {
193 args[i] = oldArgs[i+1];
194 }
195
196 if (program.equals("groovyc")) {
197 org.codehaus.groovy.tools.FileSystemCompiler.main(args);
198 } else if (program.equals("groovy")) {
199 GroovyMain.main(args);
200 } else if (program.equals("console")) {
201 // work around needed, because the console is compiled after this files
202 Class c = Class.forName("groovy.ui.Console");
203 Method m= c.getMethod("main", new Class[]{String[].class});
204 m.invoke(null, new Object[]{args});
205 } else if (program.equals("groovysh")) {
206 InteractiveShell.main(args);
207 } else if (program.equals("grok")) {
208 org.codehaus.groovy.tools.Grok.main(args);
209 } else {
210 System.out.println("unknown program "+program);
211 printUsage();
212 System.exit(1);
213 }
214
215 } catch (Exception e) {
216 e.printStackTrace();
217 System.exit(1);
218 }
219
220 }*/
221
222 }