Source Code Cross Referenced for ShellLauncher.java in  » Scripting » jruby » org » jruby » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Scripting » jruby » org.jruby.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /***** BEGIN LICENSE BLOCK *****
002:         * Version: CPL 1.0/GPL 2.0/LGPL 2.1
003:         *
004:         * The contents of this file are subject to the Common Public
005:         * License Version 1.0 (the "License"); you may not use this file
006:         * except in compliance with the License. You may obtain a copy of
007:         * the License at http://www.eclipse.org/legal/cpl-v10.html
008:         *
009:         * Software distributed under the License is distributed on an "AS
010:         * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
011:         * implied. See the License for the specific language governing
012:         * rights and limitations under the License.
013:         *
014:         * Copyright (C) 2007 Nick Sieger <nicksieger@gmail.com>
015:         * 
016:         * Alternatively, the contents of this file may be used under the terms of
017:         * either of the GNU General Public License Version 2 or later (the "GPL"),
018:         * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
019:         * in which case the provisions of the GPL or the LGPL are applicable instead
020:         * of those above. If you wish to allow use of your version of this file only
021:         * under the terms of either the GPL or the LGPL, and not to allow others to
022:         * use your version of this file under the terms of the CPL, indicate your
023:         * decision by deleting the provisions above and replace them with the notice
024:         * and other provisions required by the GPL or the LGPL. If you do not delete
025:         * the provisions above, a recipient may use your version of this file under
026:         * the terms of any one of the CPL, the GPL or the LGPL.
027:         ***** END LICENSE BLOCK *****/package org.jruby.util;
028:
029:        import java.io.File;
030:        import java.io.IOException;
031:        import java.io.InputStream;
032:        import java.io.OutputStream;
033:        import java.io.PipedInputStream;
034:        import java.io.PipedOutputStream;
035:        import java.io.PrintStream;
036:        import java.util.HashMap;
037:        import java.util.Iterator;
038:        import java.util.List;
039:        import java.util.Map;
040:        import java.util.Stack;
041:        import java.util.StringTokenizer;
042:        import java.util.regex.Pattern;
043:
044:        import org.jruby.Main;
045:        import org.jruby.Ruby;
046:        import org.jruby.RubyHash;
047:        import org.jruby.RubyInstanceConfig;
048:        import org.jruby.runtime.builtin.IRubyObject;
049:
050:        /**
051:         *
052:         * @author nicksieger
053:         */
054:        public class ShellLauncher {
055:
056:            private static final Pattern PATH_SEPARATORS = Pattern
057:                    .compile("[/\\\\]");
058:
059:            private Ruby runtime;
060:
061:            /** Creates a new instance of ShellLauncher */
062:            public ShellLauncher(Ruby runtime) {
063:                this .runtime = runtime;
064:            }
065:
066:            private static class ScriptThreadProcess extends Process implements 
067:                    Runnable {
068:                private String[] argArray;
069:                private int result;
070:                private RubyInstanceConfig config;
071:                private Thread processThread;
072:                private PipedInputStream processOutput = new PipedInputStream();
073:                private PipedInputStream processError = new PipedInputStream();
074:                private PipedOutputStream processInput = new PipedOutputStream();
075:                private final String[] env;
076:                private final File pwd;
077:
078:                public ScriptThreadProcess(final String[] argArray,
079:                        final String[] env, final File dir) {
080:                    this .argArray = argArray;
081:                    this .env = env;
082:                    this .pwd = dir;
083:                }
084:
085:                public void run() {
086:                    this .result = new Main(config).run(argArray);
087:                    this .config.getOutput().close();
088:                    this .config.getError().close();
089:                }
090:
091:                private Map environmentMap(String[] env) {
092:                    Map m = new HashMap();
093:                    for (int i = 0; i < env.length; i++) {
094:                        String[] kv = env[i].split("=", 2);
095:                        m.put(kv[0], kv[1]);
096:                    }
097:                    return m;
098:                }
099:
100:                public void start() throws IOException {
101:                    this .config = new RubyInstanceConfig() {
102:                        {
103:                            setInput(new PipedInputStream(processInput));
104:                            setOutput(new PrintStream(new PipedOutputStream(
105:                                    processOutput)));
106:                            setError(new PrintStream(new PipedOutputStream(
107:                                    processError)));
108:                            setEnvironment(environmentMap(env));
109:                            setCurrentDirectory(pwd.toString());
110:                        }
111:                    };
112:                    processThread = new Thread(this , "ScriptThreadProcess: "
113:                            + argArray[0]);
114:                    processThread.start();
115:                }
116:
117:                public OutputStream getOutputStream() {
118:                    return processInput;
119:                }
120:
121:                public InputStream getInputStream() {
122:                    return processOutput;
123:                }
124:
125:                public InputStream getErrorStream() {
126:                    return processError;
127:                }
128:
129:                public int waitFor() throws InterruptedException {
130:                    closeStreams();
131:                    processThread.join();
132:                    return result;
133:                }
134:
135:                public int exitValue() {
136:                    return result;
137:                }
138:
139:                public void destroy() {
140:                    closeStreams();
141:                    processThread.interrupt();
142:                }
143:
144:                private void closeStreams() {
145:                    try {
146:                        processInput.close();
147:                    } catch (IOException io) {
148:                    }
149:                    try {
150:                        processOutput.close();
151:                    } catch (IOException io) {
152:                    }
153:                    try {
154:                        processError.close();
155:                    } catch (IOException io) {
156:                    }
157:                }
158:            }
159:
160:            private String[] getCurrentEnv() {
161:                RubyHash hash = (RubyHash) runtime.getObject().getConstant(
162:                        "ENV");
163:                String[] ret = new String[hash.size()];
164:                int i = 0;
165:
166:                for (Iterator iter = hash.directEntrySet().iterator(); iter
167:                        .hasNext(); i++) {
168:                    Map.Entry e = (Map.Entry) iter.next();
169:                    ret[i] = e.getKey().toString() + "="
170:                            + e.getValue().toString();
171:                }
172:
173:                return ret;
174:            }
175:
176:            public int runAndWait(IRubyObject[] rawArgs) {
177:                return runAndWait(rawArgs, runtime.getOutputStream());
178:            }
179:
180:            public int runAndWait(IRubyObject[] rawArgs, OutputStream output) {
181:                OutputStream error = runtime.getErrorStream();
182:                InputStream input = runtime.getInputStream();
183:                try {
184:                    Process aProcess = run(rawArgs);
185:                    handleStreams(aProcess, input, output, error);
186:                    return aProcess.waitFor();
187:                } catch (IOException e) {
188:                    throw runtime.newIOErrorFromException(e);
189:                } catch (InterruptedException e) {
190:                    throw runtime.newThreadError("unexpected interrupt");
191:                }
192:            }
193:
194:            public Process run(IRubyObject string) throws IOException {
195:                return run(new IRubyObject[] { string });
196:            }
197:
198:            public Process run(IRubyObject[] rawArgs) throws IOException {
199:                String shell = runtime.evalScript(
200:                        "require 'rbconfig'; Config::CONFIG['SHELL']")
201:                        .toString();
202:                rawArgs[0] = runtime.newString(repairDirSeps(rawArgs[0]
203:                        .toString()));
204:                Process aProcess = null;
205:                File pwd = new File(runtime.getCurrentDirectory());
206:
207:                if (shouldRunInProcess(rawArgs[0].toString())) {
208:                    List args = parseCommandLine(rawArgs);
209:                    String command = (String) args.get(0);
210:
211:                    // snip off ruby or jruby command from list of arguments
212:                    // leave alone if the command is the name of a script
213:                    int startIndex = command.endsWith(".rb") ? 0 : 1;
214:                    if (command.trim().endsWith("irb")) {
215:                        startIndex = 0;
216:                        args.set(0, runtime.getJRubyHome() + File.separator
217:                                + "bin" + File.separator + "jirb");
218:                    }
219:                    String[] argArray = (String[]) args.subList(startIndex,
220:                            args.size()).toArray(new String[0]);
221:                    ScriptThreadProcess ipScript = new ScriptThreadProcess(
222:                            argArray, getCurrentEnv(), pwd);
223:                    ipScript.start();
224:                    aProcess = ipScript;
225:                } else if (shouldRunInShell(shell, rawArgs)) {
226:                    // execute command with sh -c or cmd.exe /c
227:                    // this does shell expansion of wildcards
228:                    String shellSwitch = shell.endsWith("sh") ? "-c" : "/c";
229:                    String[] argArray = new String[3];
230:                    argArray[0] = shell;
231:                    argArray[1] = shellSwitch;
232:                    argArray[2] = rawArgs[0].toString();
233:                    aProcess = Runtime.getRuntime().exec(argArray,
234:                            getCurrentEnv(), pwd);
235:                } else {
236:                    // execute command directly, no wildcard expansion
237:                    if (rawArgs.length > 1) {
238:                        String[] argArray = new String[rawArgs.length];
239:                        for (int i = 0; i < rawArgs.length; i++) {
240:                            argArray[i] = rawArgs[i].toString();
241:                        }
242:                        aProcess = Runtime.getRuntime().exec(argArray,
243:                                getCurrentEnv(), pwd);
244:                    } else {
245:                        aProcess = Runtime.getRuntime().exec(
246:                                rawArgs[0].toString(), getCurrentEnv(), pwd);
247:                    }
248:                }
249:                return aProcess;
250:            }
251:
252:            private static class StreamCopier extends Thread {
253:                private InputStream in;
254:                private OutputStream out;
255:                private boolean onlyIfAvailable;
256:                private boolean quit;
257:
258:                StreamCopier(InputStream in, OutputStream out, boolean avail) {
259:                    this .in = in;
260:                    this .out = out;
261:                    this .onlyIfAvailable = avail;
262:                }
263:
264:                public void run() {
265:                    byte[] buf = new byte[128];
266:                    int numRead;
267:                    try {
268:                        while (true) {
269:                            if (quit) {
270:                                break;
271:                            }
272:                            Thread.sleep(10);
273:                            if (onlyIfAvailable && in.available() == 0) {
274:                                continue;
275:                            }
276:                            if ((numRead = in.read(buf)) == -1) {
277:                                break;
278:                            }
279:                            out.write(buf, 0, numRead);
280:                        }
281:                    } catch (Exception e) {
282:                    }
283:                }
284:
285:                public void quit() {
286:                    this .quit = true;
287:                }
288:            }
289:
290:            private void handleStreams(Process p, InputStream in,
291:                    OutputStream out, OutputStream err) throws IOException {
292:                InputStream pOut = p.getInputStream();
293:                InputStream pErr = p.getErrorStream();
294:                OutputStream pIn = p.getOutputStream();
295:
296:                StreamCopier t1 = new StreamCopier(pOut, out, false);
297:                StreamCopier t2 = new StreamCopier(pErr, err, false);
298:                StreamCopier t3 = new StreamCopier(in, pIn, true);
299:                t1.start();
300:                t2.start();
301:                t3.start();
302:
303:                try {
304:                    t1.join();
305:                } catch (InterruptedException ie) {
306:                }
307:                try {
308:                    t2.join();
309:                } catch (InterruptedException ie) {
310:                }
311:                t3.quit();
312:
313:                try {
314:                    err.flush();
315:                } catch (IOException io) {
316:                }
317:                try {
318:                    out.flush();
319:                } catch (IOException io) {
320:                }
321:
322:                try {
323:                    pIn.close();
324:                } catch (IOException io) {
325:                }
326:                try {
327:                    pOut.close();
328:                } catch (IOException io) {
329:                }
330:                try {
331:                    pErr.close();
332:                } catch (IOException io) {
333:                }
334:
335:            }
336:
337:            /**
338:             * For the first full token on the command, most likely the actual executable to run, replace
339:             * all dir separators with that which is appropriate for the current platform. Return the new
340:             * with this executable string at the beginning.
341:             *
342:             * @param command The all-forward-slashes command to be "fixed"
343:             * @return The "fixed" full command line
344:             */
345:            private String repairDirSeps(String command) {
346:                String executable = "", remainder = "";
347:                command = command.trim();
348:                if (command.startsWith("'")) {
349:                    String[] tokens = command.split("'", 3);
350:                    executable = "'" + tokens[1] + "'";
351:                    if (tokens.length > 2)
352:                        remainder = tokens[2];
353:                } else if (command.startsWith("\"")) {
354:                    String[] tokens = command.split("\"", 3);
355:                    executable = "\"" + tokens[1] + "\"";
356:                    if (tokens.length > 2)
357:                        remainder = tokens[2];
358:                } else {
359:                    String[] tokens = command.split(" ", 2);
360:                    executable = tokens[0];
361:                    if (tokens.length > 1)
362:                        remainder = " " + tokens[1];
363:                }
364:
365:                // Matcher.replaceAll treats backslashes in the replacement string as escaped characters
366:                String replacement = File.separator;
367:                if (File.separatorChar == '\\')
368:                    replacement = "\\\\";
369:
370:                return PATH_SEPARATORS.matcher(executable).replaceAll(
371:                        replacement)
372:                        + remainder;
373:            }
374:
375:            private List parseCommandLine(IRubyObject[] rawArgs) {
376:                String[] args = new String[rawArgs.length];
377:                for (int i = 0; i < rawArgs.length; i++) {
378:                    args[i] = rawArgs[i].toString();
379:                }
380:                return new RawArgParser(args).getArgs();
381:            }
382:
383:            /**
384:             * Only run an in-process script if the script name has "ruby", ".rb", or "irb" in the name
385:             */
386:            private boolean shouldRunInProcess(String command) {
387:                command = command.trim();
388:                String[] spaceDelimitedTokens = command.split(" ", 2);
389:                String[] slashDelimitedTokens = spaceDelimitedTokens[0]
390:                        .split("/");
391:                String finalToken = slashDelimitedTokens[slashDelimitedTokens.length - 1];
392:                return (finalToken.indexOf("ruby") != -1
393:                        || finalToken.endsWith(".rb") || finalToken
394:                        .endsWith("irb"));
395:            }
396:
397:            private boolean shouldRunInShell(String shell, IRubyObject[] rawArgs) {
398:                return shell != null && rawArgs.length == 1
399:                        && rawArgs[0].toString().indexOf(" ") >= 0;
400:            }
401:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.