public Class loadNewClass(String javaFile, String packageName) {
Class myClass = null;
String className = javaFile.replace(".java", ".class");
File inpFile = new File(className);
int idx = className.lastIndexOf(File.separatorChar);
String javaName = className.substring(idx + 1, className.indexOf("."));
int size = (int) inpFile.length();
byte[] ba = new byte[size];
try {
FileInputStream fis = new FileInputStream(className);
// read the entry
int bytes_read = 0;
while (bytes_read != size) {
int r = fis.read(ba, bytes_read, size - bytes_read);
if (r < 0) break;
bytes_read += r;
}
if (bytes_read != size) throw new IOException("cannot read entry");
} catch (FileNotFoundException fnfExc) {
System.out.println("File : " + className + " not found");
fnfExc.printStackTrace();
} catch (IOException ioExc) {
System.out.println("IO Exception in JavaCompile trying to read class: ");
ioExc.printStackTrace();
}
try {
String packageAppendedFileName = "";
if (packageName.isEmpty()) packageAppendedFileName = javaName;
else packageAppendedFileName = packageName + "." + javaName;
packageAppendedFileName.replace(File.separatorChar, '.');
myClass = defineClass(packageAppendedFileName, ba, 0, size);
// SOS-StergAutoCompletionScalaSci.upDateAutoCompletion(myClass);
String userClassName = myClass.getName();
JOptionPane.showMessageDialog(null, "Class " + userClassName + " loaded successfully !");
} catch (ClassFormatError exc) {
System.out.println("error defining class " + inpFile);
exc.printStackTrace();
} catch (Exception ex) {
System.out.println("some error defining class " + inpFile);
ex.printStackTrace();
}
return myClass;
}
// compile a Java file with the installed javac compiler
public boolean compileFile(String sourceFile) {
boolean compilationResult = true; // no errors
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
if (compiler == null) { // Sterg-SOS why not loaded?
System.out.println(
"ToolProvider.getSystemJavaCompiler: no compiler provided. Unable to compile");
}
DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, null);
StringWriter compileWriter = new StringWriter();
List<File> sourceFileList = new ArrayList<File>();
sourceFileList.add(new File(sourceFile));
Iterable<? extends JavaFileObject> compilationUnits =
fileManager.getJavaFileObjectsFromFiles(sourceFileList);
String pathOfFile = sourceFile.substring(0, sourceFile.lastIndexOf(File.separatorChar));
String classpath =
GlobalValues.jarFilePath
+ File.pathSeparatorChar
+ pathOfFile
+ File.pathSeparatorChar
+ ".";
Iterable<String> options = Arrays.asList("-cp", classpath);
CompilationTask task =
compiler.getTask(compileWriter, fileManager, null, options, null, compilationUnits);
boolean compileResult = task.call();
if (compileResult == false) {
compilationResult = false; // compilation errors
JFrame compResultsFrame = new JFrame("Compilation Results");
String diagnString = compileWriter.toString();
JTextArea compResultsArea = new JTextArea(diagnString);
compResultsArea.setFont(new Font("Arial", Font.BOLD, 16));
JPanel compResultsPanel = new JPanel();
compResultsPanel.add(compResultsArea);
compResultsFrame.add(compResultsPanel);
compResultsFrame.setSize(800, 200);
compResultsFrame.setLocation(100, 200);
compResultsFrame.setVisible(true);
int response =
JOptionPane.showOptionDialog(
null,
"File " + sourceFile + " has compilation errors ",
"Edit File? ",
JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE,
null,
null,
null);
if (response == JOptionPane.YES_OPTION) { // edit it with scalalabEditor
new scalalabEdit.EditorPaneEdit(sourceFile);
}
}
try {
fileManager.close();
} catch (IOException e) {
}
return compilationResult;
}