@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
PySystemState sys = Py.getSystemState();
ClassLoader sysClassLoader = sys.getClassLoader();
if (sysClassLoader != null) {
// sys.classLoader overrides this class loader!
return sysClassLoader.loadClass(name);
}
// Search the sys.path for a .class file matching the named class.
PyList path = sys.path;
for (int i = 0; i < path.__len__(); i++) {
byte[] buffer;
PyObject entry = replacePathItem(sys, i, path);
if (entry instanceof SyspathArchive) {
SyspathArchive archive = (SyspathArchive) entry;
buffer = getBytesFromArchive(archive, name);
} else {
if (!(entry instanceof PyUnicode)) {
entry = entry.__str__();
}
String dir = entry.toString();
buffer = getBytesFromDir(dir, name);
}
if (buffer != null) {
definePackageForClass(name);
return defineClass(name, buffer, 0, buffer.length);
}
}
// couldn't find the .class file on sys.path
throw new ClassNotFoundException(name);
}
@Override
protected Enumeration<URL> findResources(String res) throws IOException {
List<URL> resources = new ArrayList<URL>();
PySystemState sys = Py.getSystemState();
if (res.charAt(0) == SLASH_CHAR) {
res = res.substring(1);
}
String entryRes = res;
if (File.separatorChar != SLASH_CHAR) {
res = res.replace(SLASH_CHAR, File.separatorChar);
entryRes = entryRes.replace(File.separatorChar, SLASH_CHAR);
}
PyList path = sys.path;
for (int i = 0; i < path.__len__(); i++) {
PyObject entry = replacePathItem(sys, i, path);
if (entry instanceof SyspathArchive) {
SyspathArchive archive = (SyspathArchive) entry;
ZipEntry ze = archive.getEntry(entryRes);
if (ze != null) {
try {
resources.add(new URL("jar:file:" + archive.asUriCompatibleString() + "!/" + entryRes));
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
}
continue;
}
if (!(entry instanceof PyUnicode)) {
entry = entry.__str__();
}
String dir = sys.getPath(entry.toString());
try {
File resource = new File(dir, res);
if (!resource.exists()) {
continue;
}
resources.add(resource.toURI().toURL());
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
}
return Collections.enumeration(resources);
}
/**
* make sure post properties override pre properties
*
* @throws Exception
*/
public void testInitialize_PrePostProperties() throws Exception {
Properties preProps = createPreProperties();
preProps.setProperty(FIRST_PROP, PRE);
preProps.setProperty(SECOND_PROP, PRE);
Properties postProps = createPostProperties();
postProps.setProperty(SECOND_PROP, POST);
PySystemState.initialize(preProps, postProps);
Properties registry = PySystemState.registry;
String first = registry.getProperty(FIRST_PROP, ANY);
String second = registry.getProperty(SECOND_PROP, ANY);
assertEquals(PRE, first);
assertEquals(POST, second);
}
/**
* make sure a property from the user registry overrides the same property from the installed
* registry
*
* @throws Exception
*/
public void testInitialize_Registry_User() throws Exception {
// prepare both registry files
String installedContent = FIRST_PROP.concat("=").concat(INSTALLED);
appendToInstalledRegistry(installedContent);
String userContent = FIRST_PROP.concat("=").concat(USER);
addUserRegistry(userContent);
// test with empty pre an post properties
Properties preProps = createPreProperties();
Properties postProps = createPostProperties();
PySystemState.initialize(preProps, postProps);
Properties registry = PySystemState.registry;
String first = registry.getProperty(FIRST_PROP, ANY);
assertEquals(USER, first);
}
/**
* make sure a pre property overrides any registry properties with the same name
*
* @throws Exception
*/
public void testInitialize_Pre_Registries() throws Exception {
// prepare both registry files
String contentToAppend = FIRST_PROP.concat("=").concat(INSTALLED);
appendToInstalledRegistry(contentToAppend);
String userContent = FIRST_PROP.concat("=").concat(USER);
addUserRegistry(userContent);
// set same property on pre properties
Properties preProps = createPreProperties();
preProps.setProperty(FIRST_PROP, PRE);
Properties postProps = createPostProperties();
PySystemState.initialize(preProps, postProps);
Properties registry = PySystemState.registry;
String first = registry.getProperty(FIRST_PROP, ANY);
assertEquals(PRE, first);
}
static PyObject replacePathItem(PySystemState sys, int idx, PyList paths) {
PyObject path = paths.__getitem__(idx);
if (path instanceof SyspathArchive) {
// already an archive
return path;
}
try {
// this has the side affect of adding the jar to the PackageManager during the
// initialization of the SyspathArchive
path = new SyspathArchive(sys.getPath(path.toString()));
} catch (Exception e) {
return path;
}
paths.__setitem__(idx, path);
return path;
}
/** <i>Internal use only. Do not call this method explicit.</i> */
public static void classDictInit(PyObject dict) {
dict.invoke("clear");
dict.__setitem__("__name__", new PyString("exceptions"));
dict.__setitem__("__doc__", new PyString(__doc__));
ThreadState ts = Py.getThreadState();
if (ts.getSystemState() == null) { // TODO: is this check still useful??
ts.setSystemState(Py.defaultSystemState);
}
// Push frame
PyFrame frame = new PyFrame(null, new PyStringMap());
frame.f_back = ts.frame;
if (frame.f_builtins == null) {
if (frame.f_back != null) {
frame.f_builtins = frame.f_back.f_builtins;
} else {
frame.f_builtins = PySystemState.getDefaultBuiltins();
}
}
ts.frame = frame;
dict.__setitem__("BaseException", PyBaseException.TYPE);
buildClass(dict, "KeyboardInterrupt", "BaseException", "Program interrupted by user.");
buildClass(
dict, "SystemExit", "BaseException", SystemExit(), "Request to exit from the interpreter.");
buildClass(
dict, "Exception", "BaseException", "Common base class for all non-exit exceptions.");
buildClass(
dict,
"StandardError",
"Exception",
"Base class for all standard Python exceptions that do not represent\n"
+ "interpreter exiting.");
buildClass(dict, "SyntaxError", "StandardError", SyntaxError(), "Invalid syntax.");
buildClass(dict, "IndentationError", "SyntaxError", "Improper indentation.");
buildClass(dict, "TabError", "IndentationError", "Improper mixture of spaces and tabs.");
buildClass(
dict,
"EnvironmentError",
"StandardError",
EnvironmentError(),
"Base class for I/O related errors.");
buildClass(dict, "IOError", "EnvironmentError", "I/O operation failed.");
buildClass(dict, "OSError", "EnvironmentError", "OS system call failed.");
buildClass(dict, "RuntimeError", "StandardError", "Unspecified run-time error.");
buildClass(
dict,
"NotImplementedError",
"RuntimeError",
"Method or function hasn't been implemented yet.");
buildClass(
dict,
"SystemError",
"StandardError",
"Internal error in the Python interpreter.\n\n"
+ "Please report this to the Python maintainer, "
+ "along with the traceback,\n"
+ "the Python version, and the hardware/OS "
+ "platform and version.");
buildClass(
dict, "ReferenceError", "StandardError", "Weak ref proxy used after referent went away.");
buildClass(dict, "EOFError", "StandardError", "Read beyond end of file.");
buildClass(
dict,
"ImportError",
"StandardError",
"Import can't find module, or can't find name in module.");
buildClass(dict, "TypeError", "StandardError", "Inappropriate argument type.");
buildClass(
dict, "ValueError", "StandardError", "Inappropriate argument value (of correct type).");
buildClass(dict, "UnicodeError", "ValueError", "Unicode related error.");
buildClass(
dict,
"UnicodeEncodeError",
"UnicodeError",
UnicodeEncodeError(),
"Unicode encoding error.");
buildClass(
dict,
"UnicodeDecodeError",
"UnicodeError",
UnicodeDecodeError(),
"Unicode decoding error.");
buildClass(
dict,
"UnicodeTranslateError",
"UnicodeError",
UnicodeTranslateError(),
"Unicode translation error.");
buildClass(dict, "AssertionError", "StandardError", "Assertion failed.");
buildClass(dict, "ArithmeticError", "StandardError", "Base class for arithmetic errors.");
buildClass(dict, "OverflowError", "ArithmeticError", "Result too large to be represented.");
buildClass(dict, "FloatingPointError", "ArithmeticError", "Floating point operation failed.");
buildClass(
dict,
"ZeroDivisionError",
"ArithmeticError",
"Second argument to a division or modulo operation " + "was zero.");
buildClass(dict, "LookupError", "StandardError", "Base class for lookup errors.");
buildClass(dict, "IndexError", "LookupError", "Sequence index out of range.");
buildClass(dict, "KeyError", "LookupError", KeyError(), "Mapping key not found.");
buildClass(dict, "AttributeError", "StandardError", "Attribute not found.");
buildClass(dict, "NameError", "StandardError", "Name not found globally.");
buildClass(
dict, "UnboundLocalError", "NameError", "Local name referenced but not bound to a value.");
buildClass(dict, "MemoryError", "StandardError", "Out of memory.");
buildClass(dict, "BufferError", "StandardError", "Buffer error.");
buildClass(dict, "StopIteration", "Exception", "Signal the end from iterator.next().");
buildClass(dict, "GeneratorExit", "BaseException", "Request that a generator exit.");
buildClass(dict, "Warning", "Exception", "Base class for warning categories.");
buildClass(dict, "UserWarning", "Warning", "Base class for warnings generated by user code.");
buildClass(
dict,
"DeprecationWarning",
"Warning",
"Base class for warnings about deprecated features.");
buildClass(
dict,
"PendingDeprecationWarning",
"Warning",
"Base class for warnings about features which will be deprecated\n" + "in the future.");
buildClass(dict, "SyntaxWarning", "Warning", "Base class for warnings about dubious syntax.");
buildClass(
dict,
"RuntimeWarning",
"Warning",
"Base class for warnings about dubious runtime behavior.");
buildClass(
dict,
"FutureWarning",
"Warning",
"Base class for warnings about constructs that will change semantically\n"
+ "in the future.");
buildClass(
dict,
"ImportWarning",
"Warning",
"Base class for warnings about probable mistakes in module imports");
buildClass(
dict,
"UnicodeWarning",
"Warning",
"Base class for warnings about Unicode related problems, mostly\n"
+ "related to conversion problems.");
buildClass(
dict,
"BytesWarning",
"Warning",
"Base class for warnings about bytes and buffer related problems, mostly\n"
+ "related to conversion from str or comparing to str.");
// Initialize ZipImportError here, where it's safe to; it's
// needed immediately
zipimport.initClassExceptions(dict);
ts.frame = ts.frame.f_back;
}
public void setErr(PyObject outStream) {
systemState.stderr = outStream;
}
/**
* Set the Python object to use for the standard output stream
*
* @param outStream Python file-like object to use as output stream
*/
public void setOut(PyObject outStream) {
systemState.stdout = outStream;
}
/**
* Initializes the jython runtime. This should only be called once, and should be called before
* any other python objects are created (including a PythonInterpreter).
*
* @param preProperties A set of properties. Typically System.getProperties() is used.
* @param postProperties An other set of properties. Values like python.home, python.path and all
* other values from the registry files can be added to this property set. PostProperties will
* override system properties and registry properties.
* @param argv Command line argument. These values will assigned to sys.argv.
*/
public static void initialize(
Properties preProperties, Properties postProperties, String[] argv) {
PySystemState.initialize(preProperties, postProperties, argv);
}
public void cleanup() {
systemState.callExitFunc();
}
