001 /* 002 $Id: GroovyStarter.java,v 1.4 2005/08/29 10:49:42 blackdrag Exp $ 003 004 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved. 005 006 Redistribution and use of this software and associated documentation 007 ("Software"), with or without modification, are permitted provided 008 that the following conditions are met: 009 010 1. Redistributions of source code must retain copyright 011 statements and notices. Redistributions must also contain a 012 copy of this document. 013 014 2. Redistributions in binary form must reproduce the 015 above copyright notice, this list of conditions and the 016 following disclaimer in the documentation and/or other 017 materials provided with the distribution. 018 019 3. The name "groovy" must not be used to endorse or promote 020 products derived from this Software without prior written 021 permission of The Codehaus. For written permission, 022 please contact info@codehaus.org. 023 024 4. Products derived from this Software may not be called "groovy" 025 nor may "groovy" appear in their names without prior written 026 permission of The Codehaus. "groovy" is a registered 027 trademark of The Codehaus. 028 029 5. Due credit should be given to The Codehaus - 030 http://groovy.codehaus.org/ 031 032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS 033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT 034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 043 OF THE POSSIBILITY OF SUCH DAMAGE. 044 045 */ 046 package org.codehaus.groovy.tools; 047 048 import java.lang.reflect .*; 049 import java.io.FileInputStream; 050 051 052 053 /** 054 * Helper class to help classworlds to load classes. 055 */ 056 public class GroovyStarter { 057 058 static void printUsage() { 059 System.out.println("possible programs are 'groovyc','groovy','console','grok' and 'groovysh'"); 060 System.exit(1); 061 } 062 063 064 public static void rootLoader(String args[]) { 065 String conf = System.getProperty("groovy.launcher.conf",null); 066 LoaderConfiguration lc = new LoaderConfiguration(); 067 068 // evaluate parameters 069 boolean hadMain=false, hadConf=false, hadCP=false; 070 int argsOffset = 0; 071 while (args.length-argsOffset>0 && !(hadMain && hadConf && hadCP)) { 072 if (args[argsOffset].equals("--classpath")) { 073 if (hadCP) break; 074 if (args.length==argsOffset+1) { 075 exit("classpath parameter needs argument"); 076 } 077 lc.addClassPath(args[argsOffset+1]); 078 argsOffset+=2; 079 } else if (args[argsOffset].equals("--main")) { 080 if (hadMain) break; 081 if (args.length==argsOffset+1) { 082 exit("main parameter needs argument"); 083 } 084 lc.setMainClass(args[argsOffset+1]); 085 argsOffset+=2; 086 } else if (args[argsOffset].equals("--conf")) { 087 if (hadConf) break; 088 if (args.length==argsOffset+1) { 089 exit("conf parameter needs argument"); 090 } 091 conf=args[argsOffset+1]; 092 argsOffset+=2; 093 } else { 094 break; 095 } 096 } 097 098 // we need to know the class we want to start 099 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 }