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1 package net.suberic.pooka;
2
3 import javax.activation.*;
4 import java.io.*;
5 import java.util.StringTokenizer  ;
6
7
11 public class ExternalLauncher implements CommandObject, Runnable {
12
13 private String verb;
14 private DataHandler dh;
15
16 private net.suberic.util.swing.ProgressDialog mDialog;
18
19 private File mTmpFile = null;
20
21 public ExternalLauncher() {
22 };
23
24
32 public void setCommandContext(java.lang.String newVerb,
33 DataHandler newDh)
34 throws java.io.IOException {
35 verb = newVerb;
36 dh = newDh;
37 }
38
39
43 public void setProgressDialog(net.suberic.util.swing.ProgressDialog pDialog) {
44 mDialog = pDialog;
45 }
46
47
51 public net.suberic.util.swing.ProgressDialog getProgressDialog() {
52 return mDialog;
53 }
54
55
60 public void show() {
61 Thread t = new Thread (this, "External Viewer");
62 t.start();
63 }
64
65
71 public void run() {
72 try {
73 String extension = ".tmp";
74 String filename = dh.getName();
75 if (filename == null)
76 filename = "unavailable";
77 int dotLoc = filename.lastIndexOf('.');
78 if (dotLoc > 0) {
79 extension = filename.substring(dotLoc);
80 }
81 mTmpFile = File.createTempFile("pooka_", extension);
82
83 boolean cancelled = false;
84
85 if (mDialog == null) {
86 FileOutputStream fos = new FileOutputStream(mTmpFile);
87 dh.writeTo(fos);
88 fos.close();
89 } else {
90 mDialog.show();
91 InputStream decodedIS = dh.getInputStream();
92 BufferedOutputStream outStream = new BufferedOutputStream(new FileOutputStream(mTmpFile));
93 int b=0;
94 byte[] buf = new byte[32768];
95
96 b = decodedIS.read(buf);
97 while (b != -1 && ! cancelled) {
98 outStream.write(buf, 0, b);
99 mDialog.setValue(mDialog.getValue() + b);
100 if (mDialog.isCancelled())
101 cancelled = true;
102
103 b = decodedIS.read(buf);
104 }
105
106 outStream.close();
107 }
108
109 if (! cancelled) {
110 if (mDialog != null)
111 mDialog.dispose();
112
113 String fileHandler = Pooka.getProperty("ExternalLauncher.fileHandler." + java.io.File.separator, null);
114 String wrapper = Pooka.getProperty("ExternalLauncher.cmdWrapper." + java.io.File.separator, null);
115 String fileName = mTmpFile.getAbsolutePath();
116
117 String parsedVerb;
118 String [] cmdArray;
119
120 String origParsedCommand = substituteString(verb, "%s", fileName);
121
122 if (fileHandler != null && wrapper != null) {
123
124 parsedVerb = substituteString(fileHandler, "%v", verb);
125 parsedVerb = substituteString(parsedVerb, "%s", fileName);
126
127 StringTokenizer tok = new StringTokenizer (wrapper);
128 cmdArray = new String [tok.countTokens()];
129 for (int i = 0; tok.hasMoreTokens(); i++) {
130 String currentString = tok.nextToken();
131 if (currentString.equals("%v"))
132 cmdArray[i] = parsedVerb;
133 else
134 cmdArray[i]=currentString;
135 }
136 } else {
137 parsedVerb = substituteString(verb, "%s", fileName);
138
139 cmdArray = parseCommandString(parsedVerb);
140
141 mTmpFile.deleteOnExit();
142 }
143
144 try {
145 if (Pooka.isDebug()) {
146 System.out.println("running external command " + parsedVerb);
147 }
148
149 Process p = Runtime.getRuntime().exec(cmdArray);
150
151 long startTime = System.currentTimeMillis();
152
153 try {
154 p.waitFor();
155 } catch (InterruptedException ie) {
156 }
157
158 int exitValue = p.exitValue();
159
160 if (Pooka.isDebug()) {
161 System.out.println("finished external command " + parsedVerb);
162 }
163
164 if (exitValue != 0) {
165 long externalTimeoutMillis = 5000;
166 try {
167 externalTimeoutMillis = Long.parseLong(Pooka.getProperty("ExternalLauncher.externalTimeoutMillis", "5000"));
168 } catch (NumberFormatException nfe) {
169 }
171 if (System.currentTimeMillis() - startTime < externalTimeoutMillis) {
172 if (Pooka.isDebug())
173 System.out.println("external command " + parsedVerb + ": exitValue is " + exitValue + " and timeout < externalTimeoutMillis; showing error.");
174
175 showError(origParsedCommand, p);
176 }
177 }
178 } catch (java.io.IOException processIoe) {
179 Pooka.getUIFactory().showError("Error running process " + processIoe.getMessage());
180 processIoe.printStackTrace();
181 }
182 } } catch (java.io.IOException ioe) {
184 Pooka.getUIFactory().showError("Error opening temp file " + ioe.getMessage());
185 ioe.printStackTrace();
186 }
187 }
188
189
192 public void showError(String command, Process p) {
193
194 try {
196 StringWriter errorWriter = new StringWriter();
197 BufferedWriter bw = new BufferedWriter(errorWriter);
198 bw.write(Pooka.getProperty("ExternalLauncher.error.failedToRun", "Failed executing command:"));
199 bw.newLine();
200 bw.write(command);
201 bw.newLine();
202 bw.newLine();
203 bw.write(Pooka.getProperty("ExternalLauncher.error.output", "Output:"));
204 bw.newLine();
205
206 try {
207 InputStream errorStream = p.getErrorStream();
208 BufferedReader br = new BufferedReader(new InputStreamReader(errorStream));
209 for (String nextLine = br.readLine(); nextLine != null; nextLine = br.readLine()) {
210 bw.write(nextLine);
211 bw.newLine();
212 }
213 } catch (IOException ioe) {
214 bw.write("Error not available");
215 bw.newLine();
216 }
217 bw.flush();
218 bw.close();
219
220 String errorMessage = errorWriter.toString();
221 Pooka.getUIFactory().showError(errorMessage);
222 } catch (IOException ioe) {
223 Pooka.getUIFactory().showError(Pooka.getProperty("ExternalLauncher.error.failedToRun", "Failed executing command:"));
225 }
226 }
227
228
232 public static String substituteString(String original, String key, String value) {
233
236 StringBuffer modifiedString = new StringBuffer (original);
237 int current = original.lastIndexOf(key, original.length());
238 while (current != -1) {
239 modifiedString.replace(current, current + key.length(), value);
240 current = original.substring(0, current).lastIndexOf(key, current);
241 }
242
243 return modifiedString.toString();
244 }
245
246
249 public String [] parseCommandString(String cmdString) {
250 StringTokenizer tok = new StringTokenizer (cmdString);
251 String [] cmdArray = new String [tok.countTokens()];
252 for (int i = 0; tok.hasMoreTokens(); i++) {
253 String currentString = tok.nextToken();
254 cmdArray[i]=currentString;
255 }
256
257 return cmdArray;
258 }
259
260 public void cancelSave() {
261 try {
262 mTmpFile.delete();
263 } catch (Exception e) {}
264 if (mDialog != null)
265 mDialog.dispose();
266 }
267
268 }
269 |
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