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; }