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1
55
56 package org.apache.bsf;
57
58 import java.awt.Frame  ;
59 import java.awt.event.*;
60
61 import java.io.*;
62 import java.util.Hashtable ;
63
64 import org.apache.bsf.util.*;
65
66
74 public class Main {
75 private static String ARG_IN = "-in";
76 private static String ARG_LANG = "-lang";
77 private static String ARG_MODE = "-mode";
78 private static String ARG_OUT = "-out";
79 private static String ARG_VAL_EVAL = "eval";
80 private static String ARG_VAL_EXEC = "exec";
81 private static String ARG_VAL_COMPILE = "compile";
82 private static String DEFAULT_IN_FILE_NAME = "<STDIN>";
83 private static String DEFAULT_MODE = ARG_VAL_EVAL;
84 private static String DEFAULT_CLASS_NAME = "Test";
85
86
93 public static void main(String [] args) throws IOException {
94 try {
95 if ((args.length == 0) || (args.length % 2 != 0)) {
96 printHelp();
97 System.exit(1);
98 }
99
100 Hashtable argsTable = new Hashtable ();
101
102 argsTable.put(ARG_OUT, DEFAULT_CLASS_NAME);
103 argsTable.put(ARG_MODE, DEFAULT_MODE);
104
105 for (int i = 0; i < args.length; i += 2) {
106 argsTable.put(args[i], args[i + 1]);
107 }
108
109 String inFileName = (String ) argsTable.get(ARG_IN);
110 String language = (String ) argsTable.get(ARG_LANG);
111
112 if (language == null) {
113 if (inFileName != null) {
114 language = BSFManager.getLangFromFilename(inFileName);
115 } else {
116 throw new BSFException(
117 BSFException.REASON_OTHER_ERROR,
118 "unable to determine language");
119 }
120 }
121
122 Reader in;
123
124 if (inFileName != null) {
125 in = new FileReader(inFileName);
126 } else {
127 in = new InputStreamReader(System.in);
128 inFileName = "<STDIN>";
129 }
130
131 BSFManager mgr = new BSFManager();
132 String mode = (String ) argsTable.get(ARG_MODE);
133
134 if (mode.equals(ARG_VAL_COMPILE)) {
135 String outClassName = (String ) argsTable.get(ARG_OUT);
136 FileWriter out = new FileWriter(outClassName + ".java");
137 PrintWriter pw = new PrintWriter(out);
138
139 CodeBuffer cb = new CodeBuffer();
140 cb.setClassName(outClassName);
141 mgr.compileScript(
142 language,
143 inFileName,
144 0,
145 0,
146 IOUtils.getStringFromReader(in),
147 cb);
148 cb.print(pw, true);
149 out.close();
150 } else
151 if (mode.equals(ARG_VAL_EXEC)) {
152 mgr.exec(language, inFileName, 0, 0, IOUtils.getStringFromReader(in));
153 } else {
154 Object obj =
155 mgr.eval(language, inFileName, 0, 0, IOUtils.getStringFromReader(in));
156
157
159 if (obj instanceof java.awt.Component ) {
160 Frame f;
161
162 if (obj instanceof Frame ) {
163 f = (Frame ) obj;
164 } else {
165 f = new Frame ("BSF Result: " + inFileName);
166 f.add ((java.awt.Component ) obj);
167 }
168
169 f.addWindowListener(
171 new WindowAdapter () {
172 public void windowClosing (WindowEvent e) {
173 System.exit (0);
174 }
175 });
176 f.pack ();
177 f.show ();
178 } else {
179 System.err.println("Result: " +
180 obj);
181 }
182
183 System.err.println("Result: " + obj);
184 }
185 } catch (BSFException e) {
186 e.printStackTrace();
187 }
188 }
189 private static void printHelp() {
190 System.err.println("Usage:");
191 System.err.println();
192 System.err.println(" java " + Main.class.getName() + " [args]");
193 System.err.println();
194 System.err.println(" args:");
195 System.err.println();
196 System.err.println(
197 " [-in fileName] default: " + DEFAULT_IN_FILE_NAME);
198 System.err.println(
199 " [-lang languageName] default: "
200 + "<If -in is specified and -lang");
201 System.err.println(
202 " "
203 + " is not, attempt to determine");
204 System.err.println(
205 " "
206 + " language from file extension;");
207 System.err.println(
208 " "
209 + " otherwise, -lang is required.>");
210 System.err.println(
211 " [-mode (eval|exec|compile)] default: " + DEFAULT_MODE);
212 System.err.println();
213 System.err.println(
214 " Additional args used only if -mode is " + "set to \"compile\":");
215 System.err.println();
216 System.err.println(
217 " [-out className] default: " + DEFAULT_CLASS_NAME);
218 }
219 }
220 |
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