public String execRecognizer() {
try {
String inputFile = new File(tmpdir, "input").getAbsolutePath();
String[] args =
new String[] {"java", "-classpath", tmpdir + pathSep + CLASSPATH, "Test", inputFile};
// String cmdLine = "java -classpath "+CLASSPATH+pathSep+tmpdir+" Test " + new File(tmpdir,
// "input").getAbsolutePath();
// System.out.println("execParser: "+cmdLine);
Process process = Runtime.getRuntime().exec(args, null, new File(tmpdir));
StreamVacuum stdoutVacuum = new StreamVacuum(process.getInputStream());
StreamVacuum stderrVacuum = new StreamVacuum(process.getErrorStream());
stdoutVacuum.start();
stderrVacuum.start();
process.waitFor();
stdoutVacuum.join();
stderrVacuum.join();
String output = null;
output = stdoutVacuum.toString();
if (stderrVacuum.toString().length() > 0) {
this.stderrDuringParse = stderrVacuum.toString();
System.err.println("exec stderrVacuum: " + stderrVacuum);
}
return output;
} catch (Exception e) {
System.err.println("can't exec recognizer");
e.printStackTrace(System.err);
}
return null;
}
public String execClass(String className) {
/* HOW TO GET STDOUT?
try {
ClassLoader cl_new = new DirectoryLoader(new File(tmpdir));
Class compiledClass = cl_new.loadClass(className);
Method m = compiledClass.getMethod("main");
m.invoke(null);
} catch (Exception ex) {
ex.printStackTrace(System.err);
}
*/
try {
String[] args =
new String[] {
"java",
"-classpath",
tmpdir + pathSep + CLASSPATH,
className,
new File(tmpdir, "input").getAbsolutePath()
};
// String cmdLine = "java -classpath "+CLASSPATH+pathSep+tmpdir+" Test " + new File(tmpdir,
// "input").getAbsolutePath();
// System.out.println("execParser: "+cmdLine);
Process process = Runtime.getRuntime().exec(args, null, new File(tmpdir));
StreamVacuum stdoutVacuum = new StreamVacuum(process.getInputStream());
StreamVacuum stderrVacuum = new StreamVacuum(process.getErrorStream());
stdoutVacuum.start();
stderrVacuum.start();
process.waitFor();
stdoutVacuum.join();
stderrVacuum.join();
String output = null;
output = stdoutVacuum.toString();
if (stderrVacuum.toString().length() > 0) {
this.stderrDuringParse = stderrVacuum.toString();
System.err.println("exec stderrVacuum: " + stderrVacuum);
}
return output;
} catch (Exception e) {
System.err.println("can't exec recognizer");
e.printStackTrace(System.err);
}
return null;
}
/** Return true if all is ok, no errors */
protected boolean antlr(
String fileName, String grammarFileName, String grammarStr, boolean debug) {
boolean allIsWell = true;
mkdir(tmpdir);
writeFile(tmpdir, fileName, grammarStr);
try {
final List options = new ArrayList();
if (debug) {
options.add("-debug");
}
options.add("-o");
options.add(tmpdir);
options.add("-lib");
options.add(tmpdir);
options.add(new File(tmpdir, grammarFileName).toString());
final String[] optionsA = new String[options.size()];
options.toArray(optionsA);
ErrorQueue equeue = new ErrorQueue();
Tool antlr = newTool(optionsA);
antlr.addListener(equeue);
antlr.processGrammarsOnCommandLine();
if (equeue.errors.size() > 0) {
allIsWell = false;
System.err.println("antlr reports errors from " + options);
for (int i = 0; i < equeue.errors.size(); i++) {
ANTLRMessage msg = (ANTLRMessage) equeue.errors.get(i);
System.err.println(msg);
}
System.out.println("!!!\ngrammar:");
System.out.println(grammarStr);
System.out.println("###");
}
} catch (Exception e) {
allIsWell = false;
System.err.println("problems building grammar: " + e);
e.printStackTrace(System.err);
}
return allIsWell;
}