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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
GroovyMain.java | 0% | 0% | 0% | 0% |
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/*
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$Id: GroovyMain.java,v 1.1 2004/07/13 17:38:03 jstrachan Exp $
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Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
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Redistribution and use of this software and associated documentation
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("Software"), with or without modification, are permitted provided
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that the following conditions are met:
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1. Redistributions of source code must retain copyright
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statements and notices. Redistributions must also contain a
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copy of this document.
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2. Redistributions in binary form must reproduce the
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above copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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3. The name "groovy" must not be used to endorse or promote
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products derived from this Software without prior written
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permission of The Codehaus. For written permission,
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please contact info@codehaus.org.
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4. Products derived from this Software may not be called "groovy"
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nor may "groovy" appear in their names without prior written
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permission of The Codehaus. "groovy" is a registered
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trademark of The Codehaus.
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5. Due credit should be given to The Codehaus -
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http://groovy.codehaus.org/
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THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
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NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package groovy.ui;
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import groovy.lang.GroovyShell;
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import groovy.lang.MetaClass;
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import groovy.lang.Script;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.util.Iterator;
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import java.util.List;
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import org.apache.commons.cli.CommandLine;
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import org.apache.commons.cli.CommandLineParser;
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import org.apache.commons.cli.HelpFormatter;
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import org.apache.commons.cli.OptionBuilder;
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import org.apache.commons.cli.Options;
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import org.apache.commons.cli.ParseException;
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import org.apache.commons.cli.PosixParser;
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import org.codehaus.groovy.control.CompilationFailedException;
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/**
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* A Command line to execute groovy.
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*
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* @author Yuri Schimke
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* @version $Revision: 1.1 $
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*/
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public class GroovyMain { |
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// arguments to the script
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private List args;
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// is this a file on disk
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private boolean isScriptFile; |
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// filename or content of script
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private String script;
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// process args as input files
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private boolean processFiles; |
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// edit input files in place
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private boolean editFiles; |
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// automatically output the result of each script
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private boolean autoOutput; |
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// backup input files with extension
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private String backupExtension;
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/**
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* Main CLI interface.
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*
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* @param args
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* all command line args.
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*/
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106 | 0 |
public static void main(String args[]) { |
107 | 0 |
MetaClass.setUseReflection(true);
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109 | 0 |
Options options = buildOptions(); |
110 |
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111 | 0 |
try {
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CommandLine cmd = parseCommandLine(options, args); |
113 |
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if (cmd.hasOption('h')) {
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HelpFormatter formatter = new HelpFormatter();
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formatter.printHelp("groovy", options);
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} |
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else {
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process(cmd); |
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} |
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} |
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catch (ParseException pe) {
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System.out.println("error: " + pe.getMessage());
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System.out.println("usage: groovy [-e 'script'] [groovyScript] [arguments]");
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} |
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} |
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/**
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* Parse the command line.
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*
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* @param options
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* the options parser.
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* @param args
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* the command line args.
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* @return parsed command line.
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* @throws ParseException
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* if there was a problem.
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*/
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139 | 0 |
private static CommandLine parseCommandLine(Options options, String[] args) throws ParseException { |
140 | 0 |
CommandLineParser parser = new PosixParser();
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141 | 0 |
CommandLine cmd = parser.parse(options, args); |
142 | 0 |
return cmd;
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} |
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/**
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* Build the options parser.
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*
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* @return an options parser.
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*/
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150 | 0 |
private static Options buildOptions() { |
151 | 0 |
Options options = new Options();
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153 | 0 |
options.addOption(OptionBuilder.hasArg(false).withDescription("usage information").withLongOpt("help").create('h')); |
154 |
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155 | 0 |
options.addOption(OptionBuilder.withArgName("script").hasArg().withDescription("specify a command line script").create('e')); |
156 |
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157 | 0 |
options.addOption(OptionBuilder.withArgName("extension").hasOptionalArg().withDescription("modify files in place").create('i')); |
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options.addOption(OptionBuilder.hasArg(false).withDescription("process files line by line").create('n')); |
160 |
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161 | 0 |
options.addOption(OptionBuilder.hasArg(false).withDescription("process files line by line and print result").create('p')); |
162 | 0 |
return options;
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} |
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/**
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* Process the users request.
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*
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* @param line
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* the parsed command line.
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* @throws ParseException
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* if invalid options are chosen
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*/
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173 | 0 |
private static void process(CommandLine line) throws ParseException { |
174 | 0 |
GroovyMain main = new GroovyMain();
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176 | 0 |
List args = line.getArgList(); |
177 |
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178 | 0 |
main.isScriptFile = !line.hasOption('e'); |
179 | 0 |
main.processFiles = line.hasOption('p') || line.hasOption('n'); |
180 | 0 |
main.autoOutput = line.hasOption('p'); |
181 | 0 |
main.editFiles = line.hasOption('i'); |
182 | 0 |
if (main.editFiles) {
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main.backupExtension = line.getOptionValue('i'); |
184 |
} |
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186 | 0 |
if (main.isScriptFile) {
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187 | 0 |
if (args.isEmpty())
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188 | 0 |
throw new ParseException("neither -e or filename provided"); |
189 |
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190 | 0 |
main.script = (String) args.remove(0); |
191 | 0 |
if (main.script.endsWith(".java")) |
192 | 0 |
throw new ParseException("error: cannot compile file with .java extension: " + main.script); |
193 |
} |
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else {
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195 | 0 |
main.script = line.getOptionValue('e'); |
196 |
} |
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197 |
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198 | 0 |
main.args = args; |
199 |
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200 | 0 |
main.run(); |
201 |
} |
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203 | 0 |
public GroovyMain() {
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} |
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/**
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* Run the script.
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*/
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209 | 0 |
private void run() { |
210 | 0 |
try {
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211 | 0 |
if (processFiles) {
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212 | 0 |
processFiles(); |
213 |
} |
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else {
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215 | 0 |
processOnce(); |
216 |
} |
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} |
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catch (Exception e) {
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219 | 0 |
System.out.println("Caught: " + e);
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220 | 0 |
e.printStackTrace(); |
221 |
} |
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} |
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223 |
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224 |
/**
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* Process the input files.
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*/
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227 | 0 |
private void processFiles() throws CompilationFailedException, IOException { |
228 | 0 |
GroovyShell groovy = new GroovyShell();
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229 |
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230 | 0 |
Script s = null;
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231 |
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232 | 0 |
if (isScriptFile)
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233 | 0 |
s = groovy.parse(new File(script));
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else
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235 | 0 |
s = groovy.parse(script, "main");
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236 |
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237 | 0 |
if (args.isEmpty()) {
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238 | 0 |
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); |
239 | 0 |
PrintWriter writer = new PrintWriter(System.out);
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240 |
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241 | 0 |
processReader(s, reader, writer); |
242 |
} |
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243 |
else {
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244 | 0 |
Iterator i = args.iterator(); |
245 | 0 |
while (i.hasNext()) {
|
246 | 0 |
String filename = (String) i.next(); |
247 | 0 |
File file = new File(filename);
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248 | 0 |
processFile(s, file); |
249 |
} |
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250 |
} |
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251 |
} |
|
252 |
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253 |
/**
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254 |
* Process a single input file.
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|
255 |
*
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256 |
* @param s
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|
257 |
* the script to execute.
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* @param file
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* the input file.
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*/
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261 | 0 |
private void processFile(Script s, File file) throws IOException { |
262 | 0 |
if (!file.exists())
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263 | 0 |
throw new FileNotFoundException(file.getName()); |
264 |
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|
265 | 0 |
if (!editFiles) {
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266 | 0 |
BufferedReader reader = new BufferedReader(new FileReader(file)); |
267 | 0 |
try {
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268 | 0 |
PrintWriter writer = new PrintWriter(System.out);
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269 | 0 |
processReader(s, reader, writer); |
270 | 0 |
writer.flush(); |
271 |
} |
|
272 |
finally {
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273 | 0 |
reader.close(); |
274 |
} |
|
275 |
} |
|
276 |
else {
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|
277 | 0 |
File backup = null;
|
278 | 0 |
if (backupExtension == null) { |
279 | 0 |
backup = File.createTempFile("groovy_", ".tmp"); |
280 | 0 |
backup.deleteOnExit(); |
281 |
} |
|
282 |
else {
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|
283 | 0 |
backup = new File(file.getPath() + backupExtension);
|
284 | 0 |
backup.delete(); |
285 |
} |
|
286 | 0 |
if (!file.renameTo(backup))
|
287 | 0 |
throw new IOException("unable to rename " + file + " to " + backup); |
288 |
|
|
289 | 0 |
BufferedReader reader = new BufferedReader(new FileReader(backup)); |
290 | 0 |
try {
|
291 | 0 |
PrintWriter writer = new PrintWriter(new FileWriter(file)); |
292 | 0 |
try {
|
293 | 0 |
processReader(s, reader, writer); |
294 |
} |
|
295 |
finally {
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|
296 | 0 |
writer.close(); |
297 |
} |
|
298 |
} |
|
299 |
finally {
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|
300 | 0 |
reader.close(); |
301 |
} |
|
302 |
} |
|
303 |
} |
|
304 |
|
|
305 |
/**
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|
306 |
* Process a script against a single input file.
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|
307 |
*
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|
308 |
* @param s
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|
309 |
* script to execute.
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|
310 |
* @param reader
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|
311 |
* input file.
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312 |
* @param pw
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|
313 |
* output sink.
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314 |
*/
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315 | 0 |
private void processReader(Script s, BufferedReader reader, PrintWriter pw) throws IOException { |
316 | 0 |
String line = null;
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317 | 0 |
s.setProperty("out", pw);
|
318 | 0 |
while ((line = reader.readLine()) != null) { |
319 | 0 |
s.setProperty("line", line);
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320 | 0 |
Object o = s.run(); |
321 |
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|
322 | 0 |
if (autoOutput) {
|
323 | 0 |
pw.println(o); |
324 |
} |
|
325 |
} |
|
326 |
} |
|
327 |
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|
328 |
/**
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|
329 |
* Process the standard, single script with args.
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|
330 |
*/
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|
331 | 0 |
private void processOnce() throws CompilationFailedException, IOException { |
332 | 0 |
GroovyShell groovy = new GroovyShell();
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333 |
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|
334 | 0 |
if (isScriptFile)
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335 | 0 |
groovy.run(new File(script), args);
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336 |
else
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|
337 | 0 |
groovy.run(script, "main", args);
|
338 |
} |
|
339 |
} |
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