org.freedesktop.dbus.bin.CreateInterface Maven / Gradle / Ivy
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Improved version of the DBus-Java library provided by freedesktop.org (https://dbus.freedesktop.org/doc/dbus-java/).
/*
D-Bus Java Implementation
Copyright (c) 2005-2006 Matthew Johnson
This program is free software; you can redistribute it and/or modify it
under the terms of either the GNU Lesser General Public License Version 2 or the
Academic Free Licence Version 2.1.
Full licence texts are included in the COPYING file with this program.
*/
package org.freedesktop.dbus.bin;
import static org.freedesktop.dbus.Gettext.t;
import static org.freedesktop.dbus.bin.IdentifierMangler.mangle;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.Reader;
import java.io.StringReader;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.text.MessageFormat;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import java.util.Vector;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.freedesktop.DBus.Introspectable;
import org.freedesktop.dbus.DBusConnection;
import org.freedesktop.dbus.Marshalling;
import org.freedesktop.dbus.exceptions.DBusException;
import org.freedesktop.dbus.exceptions.DBusExecutionException;
import org.freedesktop.dbus.types.DBusStructType;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Converts a DBus XML file into Java interface definitions.
*/
public class CreateInterface {
@SuppressWarnings("unchecked")
private static String collapseType(Type t, Set imports, Map structs, boolean container, boolean fullnames) throws DBusException {
if (t instanceof ParameterizedType) {
String s;
Class c = (Class) ((ParameterizedType) t).getRawType();
if (null != structs && t instanceof DBusStructType) {
int num = 1;
String name = "Struct";
while (null != structs.get(new StructStruct(name + num))) {
num++;
}
name = name + num;
structs.put(new StructStruct(name), ((ParameterizedType) t).getActualTypeArguments());
return name;
}
if (null != imports) {
imports.add(c.getName());
}
if (fullnames) {
return c.getName();
} else {
s = c.getSimpleName();
}
s += '<';
Type[] ts = ((ParameterizedType) t).getActualTypeArguments();
for (Type st : ts) {
s += collapseType(st, imports, structs, true, fullnames) + ',';
}
s = s.replaceAll(",$", ">");
return s;
} else if (t instanceof Class) {
Class c = (Class) t;
if (c.isArray()) {
return collapseType(c.getComponentType(), imports, structs, container, fullnames) + "[]";
} else {
Package p = c.getPackage();
if (null != imports && !"java.lang".equals(p.getName())) {
imports.add(c.getName());
}
if (container) {
if (fullnames) {
return c.getName();
} else {
return c.getSimpleName();
}
} else {
try {
Field f = c.getField("TYPE");
Class d = (Class) f.get(c);
return d.getSimpleName();
} catch (Exception e) {
return c.getSimpleName();
}
}
}
} else {
return "";
}
}
private static String getJavaType(String dbus, Set imports, Map structs, boolean container, boolean fullnames) throws DBusException {
if (null == dbus || "".equals(dbus)) {
return "";
}
Vector v = new Vector();
Marshalling.getJavaType(dbus, v, 1);
Type t = v.get(0);
return collapseType(t, imports, structs, container, fullnames);
}
// CHECKSTYLE:OFF
public String comment = "";
boolean builtin;
// CHECKSTYLE:ON
public CreateInterface(PrintStreamFactory _factory, boolean _builtin) {
this.factory = _factory;
this.builtin = _builtin;
}
@SuppressWarnings("fallthrough")
String parseReturns(Vector out, Set imports, Map tuples, Map structs) throws DBusException {
String[] names = new String[] {
"Pair", "Triplet", "Quad", "Quintuple", "Sextuple", "Septuple"
};
String sig = "";
String name = null;
switch (out.size()) {
case 0:
sig += "void ";
break;
case 1:
sig += getJavaType(out.get(0).getAttribute("type"), imports, structs, false, false) + " ";
break;
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
name = names[out.size() - 2];
default:
if (null == name) {
name = "NTuple" + out.size();
}
tuples.put(name, out.size());
sig += name + "<";
for (Element arg : out) {
sig += getJavaType(arg.getAttribute("type"), imports, structs, true, false) + ", ";
}
sig = sig.replaceAll(", $", "> ");
break;
}
return sig;
}
String parseMethod(Element meth, Set imports, Map tuples, Map structs, Set exceptions, Set anns) throws DBusException {
Vector in = new Vector();
Vector out = new Vector();
if (null == meth.getAttribute("name") || "".equals(meth.getAttribute("name"))) {
System.err.println(t("ERROR: Method name was blank, failed"));
System.exit(1);
}
String annotations = "";
String throwses = null;
for (Node a : new IterableNodeList(meth.getChildNodes())) {
if (Node.ELEMENT_NODE != a.getNodeType()) {
continue;
}
checkNode(a, "arg", "annotation");
if ("arg".equals(a.getNodeName())) {
Element arg = (Element) a;
// methods default to in
if ("out".equals(arg.getAttribute("direction"))) {
out.add(arg);
} else {
in.add(arg);
}
} else if ("annotation".equals(a.getNodeName())) {
Element e = (Element) a;
if (e.getAttribute("name").equals("org.freedesktop.DBus.Method.Error")) {
if (null == throwses) {
throwses = e.getAttribute("value");
} else {
throwses += ", " + e.getAttribute("value");
}
exceptions.add(e.getAttribute("value"));
} else {
annotations += parseAnnotation(e, imports, anns);
}
}
}
String sig = "";
comment = "";
sig += parseReturns(out, imports, tuples, structs);
sig += mangle(meth.getAttribute("name")) + "(";
char defaultname = 'a';
String params = "";
for (Element arg : in) {
String type = getJavaType(arg.getAttribute("type"), imports, structs, false, false);
String name = arg.getAttribute("name");
if (null == name || "".equals(name)) {
name = "" + (defaultname++);
}
params += type + " " + mangle(name) + ", ";
}
return ("".equals(comment) ? "" : " /**\n" + comment + " */\n") + annotations + " public " + sig + params.replaceAll("..$", "") + ")" + (null == throwses ? "" : " throws " + throwses) + ";";
}
String parseSignal(Element signal, Set imports, Map structs, Set anns) throws DBusException {
Map params = new HashMap();
Vector porder = new Vector();
char defaultname = 'a';
imports.add("org.freedesktop.dbus.DBusSignal");
imports.add("org.freedesktop.dbus.exceptions.DBusException");
String annotations = "";
for (Node a : new IterableNodeList(signal.getChildNodes())) {
if (Node.ELEMENT_NODE != a.getNodeType()) {
continue;
}
checkNode(a, "arg", "annotation");
if ("annotation".equals(a.getNodeName())) {
annotations += parseAnnotation((Element) a, imports, anns);
} else {
Element arg = (Element) a;
String type = getJavaType(arg.getAttribute("type"), imports, structs, false, false);
String name = arg.getAttribute("name");
if (null == name || "".equals(name)) {
name = "" + (defaultname++);
}
params.put(mangle(name), type);
porder.add(mangle(name));
}
}
String out = "";
out += annotations;
out += " public static class " + signal.getAttribute("name");
out += " extends DBusSignal\n {\n";
for (String name : porder) {
out += " public final " + params.get(name) + " " + name + ";\n";
}
out += " public " + signal.getAttribute("name") + "(String path";
for (String name : porder) {
out += ", " + params.get(name) + " " + name;
}
out += ") throws DBusException\n {\n super(path";
for (String name : porder) {
out += ", " + name;
}
out += ");\n";
for (String name : porder) {
out += " this." + name + " = " + name + ";\n";
}
out += " }\n";
out += " }\n";
return out;
}
String parseAnnotation(Element ann, Set imports, Set annotations) {
String s = " @" + ann.getAttribute("name").replaceAll(".*\\.([^.]*)$", "$1") + "(";
if (null != ann.getAttribute("value") && !"".equals(ann.getAttribute("value"))) {
s += '"' + ann.getAttribute("value") + '"';
}
imports.add(ann.getAttribute("name"));
annotations.add(ann.getAttribute("name"));
return s += ")\n";
}
void parseInterface(Element iface, PrintStream out, Map tuples, Map structs, Set exceptions, Set anns) throws DBusException {
if (null == iface.getAttribute("name") || "".equals(iface.getAttribute("name"))) {
System.err.println(t("ERROR: Interface name was blank, failed"));
System.exit(1);
}
out.println("package " + iface.getAttribute("name").replaceAll("\\.[^.]*$", "") + ";");
String methods = "";
String signals = "";
String annotations = "";
Set imports = new TreeSet();
imports.add("org.freedesktop.dbus.DBusInterface");
for (Node meth : new IterableNodeList(iface.getChildNodes())) {
if (Node.ELEMENT_NODE != meth.getNodeType()) {
continue;
}
checkNode(meth, "method", "signal", "property", "annotation");
if ("method".equals(meth.getNodeName())) {
methods += parseMethod((Element) meth, imports, tuples, structs, exceptions, anns) + "\n";
} else if ("signal".equals(meth.getNodeName())) {
signals += parseSignal((Element) meth, imports, structs, anns);
} else if ("property".equals(meth.getNodeName())) {
System.err.println("WARNING: Ignoring property");
} else if ("annotation".equals(meth.getNodeName())) {
annotations += parseAnnotation((Element) meth, imports, anns);
}
}
if (imports.size() > 0) {
for (String i : imports) {
out.println("import " + i + ";");
}
}
out.print(annotations);
out.print("public interface " + iface.getAttribute("name").replaceAll("^.*\\.([^.]*)$", "$1"));
out.println(" extends DBusInterface");
out.println("{");
out.println(signals);
out.println(methods);
out.println("}");
}
void createException(String name, String pack, PrintStream out) throws DBusException {
out.println("package " + pack + ";");
out.println("import org.freedesktop.dbus.DBusExecutionException;");
out.print("public class " + name);
out.println(" extends DBusExecutionException");
out.println("{");
out.println(" public " + name + "(String message)");
out.println(" {");
out.println(" super(message);");
out.println(" }");
out.println("}");
}
void createAnnotation(String name, String pack, PrintStream out) throws DBusException {
out.println("package " + pack + ";");
out.println("import java.lang.annotation.Retention;");
out.println("import java.lang.annotation.RetentionPolicy;");
out.println("@Retention(RetentionPolicy.RUNTIME)");
out.println("public @interface " + name);
out.println("{");
out.println(" String value();");
out.println("}");
}
void createStruct(String name, Type[] type, String pack, PrintStream out, Map existing) throws DBusException, IOException {
out.println("package " + pack + ";");
Set imports = new TreeSet();
imports.add("org.freedesktop.dbus.Position");
imports.add("org.freedesktop.dbus.Struct");
Map structs = new HashMap(existing);
String[] types = new String[type.length];
for (int i = 0; i < type.length; i++) {
types[i] = collapseType(type[i], imports, structs, false, false);
}
for (String im : imports) {
out.println("import " + im + ";");
}
out.println("public final class " + name + " extends Struct");
out.println("{");
int i = 0;
char c = 'a';
String params = "";
for (String t : types) {
out.println(" @Position(" + i++ + ")");
out.println(" public final " + t + " " + c + ";");
params += t + " " + c + ", ";
c++;
}
out.println(" public " + name + "(" + params.replaceAll("..$", "") + ")");
out.println(" {");
for (char d = 'a'; d < c; d++) {
out.println(" this." + d + " = " + d + ";");
}
out.println(" }");
out.println("}");
structs = StructStruct.fillPackages(structs, pack);
Map tocreate = new HashMap(structs);
for (StructStruct ss : existing.keySet()) {
tocreate.remove(ss);
}
createStructs(tocreate, structs);
}
void createTuple(String name, int num, String pack, PrintStream out) throws DBusException {
out.println("package " + pack + ";");
out.println("import org.freedesktop.dbus.Position;");
out.println("import org.freedesktop.dbus.Tuple;");
out.println("/** Just a typed container class */");
out.print("public final class " + name);
String types = " <";
for (char v = 'A'; v < 'A' + num; v++) {
types += v + ",";
}
out.print(types.replaceAll(",$", "> "));
out.println("extends Tuple");
out.println("{");
char t = 'A';
char n = 'a';
for (int i = 0; i < num; i++, t++, n++) {
out.println(" @Position(" + i + ")");
out.println(" public final " + t + " " + n + ";");
}
out.print(" public " + name + "(");
String sig = "";
t = 'A';
n = 'a';
for (int i = 0; i < num; i++, t++, n++) {
sig += t + " " + n + ", ";
}
out.println(sig.replaceAll(", $", ")"));
out.println(" {");
for (char v = 'a'; v < 'a' + num; v++) {
out.println(" this." + v + " = " + v + ";");
}
out.println(" }");
out.println("}");
}
void parseRoot(Element root) throws DBusException, IOException {
Map structs = new HashMap();
Set exceptions = new TreeSet();
Set annotations = new TreeSet();
for (Node iface : new IterableNodeList(root.getChildNodes())) {
if (Node.ELEMENT_NODE != iface.getNodeType()) {
continue;
}
checkNode(iface, "interface", "node");
if ("interface".equals(iface.getNodeName())) {
Map tuples = new HashMap();
String name = ((Element) iface).getAttribute("name");
String file = name.replaceAll("\\.", "/") + ".java";
String path = file.replaceAll("/[^/]*$", "");
String pack = name.replaceAll("\\.[^.]*$", "");
// don't create interfaces in org.freedesktop.DBus by default
if (pack.startsWith("org.freedesktop.DBus") && !builtin) {
continue;
}
factory.init(file, path);
parseInterface((Element) iface, factory.createPrintStream(file), tuples, structs, exceptions, annotations);
structs = StructStruct.fillPackages(structs, pack);
createTuples(tuples, pack);
} else if ("node".equals(iface.getNodeName())) {
parseRoot((Element) iface);
} else {
System.err.println(t("ERROR: Unknown node: ") + iface.getNodeName());
System.exit(1);
}
}
createStructs(structs, structs);
createExceptions(exceptions);
createAnnotations(annotations);
}
private void createAnnotations(Set annotations) throws DBusException, IOException {
for (String fqn : annotations) {
String name = fqn.replaceAll("^.*\\.([^.]*)$", "$1");
String pack = fqn.replaceAll("\\.[^.]*$", "");
// don't create things in org.freedesktop.DBus by default
if (pack.startsWith("org.freedesktop.DBus") && !builtin) {
continue;
}
String path = pack.replaceAll("\\.", "/");
String file = name.replaceAll("\\.", "/") + ".java";
factory.init(file, path);
createAnnotation(name, pack, factory.createPrintStream(path, name));
}
}
private void createExceptions(Set exceptions) throws DBusException, IOException {
for (String fqn : exceptions) {
String name = fqn.replaceAll("^.*\\.([^.]*)$", "$1");
String pack = fqn.replaceAll("\\.[^.]*$", "");
// don't create things in org.freedesktop.DBus by default
if (pack.startsWith("org.freedesktop.DBus") && !builtin) {
continue;
}
String path = pack.replaceAll("\\.", "/");
String file = name.replaceAll("\\.", "/") + ".java";
factory.init(file, path);
createException(name, pack, factory.createPrintStream(path, name));
}
}
private void createStructs(Map structs, Map existing) throws DBusException, IOException {
for (StructStruct ss : structs.keySet()) {
String file = ss.name.replaceAll("\\.", "/") + ".java";
String path = ss.pack.replaceAll("\\.", "/");
factory.init(file, path);
createStruct(ss.name, structs.get(ss), ss.pack, factory.createPrintStream(path, ss.name), existing);
}
}
private void createTuples(Map typeMap, String pack) throws DBusException, IOException {
for (String tname : typeMap.keySet()) {
createTuple(tname, typeMap.get(tname), pack, factory.createPrintStream(pack.replaceAll("\\.", "/"), tname));
}
}
public abstract static class PrintStreamFactory {
public abstract void init(String file, String path);
/**
* @param path path
* @param tname target name
* @return PrintStream
* @throws IOException may throw exception on failure
*/
public PrintStream createPrintStream(String path, String tname) throws IOException {
final String file = path + "/" + tname + ".java";
return createPrintStream(file);
}
/**
* @param file file to print to
* @return PrintStream
* @throws IOException may throw exception on failure
*/
public abstract PrintStream createPrintStream(final String file) throws IOException;
}
static class ConsoleStreamFactory extends PrintStreamFactory {
@Override
public void init(String file, String path) {
}
@Override
public PrintStream createPrintStream(String file) throws IOException {
System.out.println("/* File: " + file + " */");
return System.out;
}
@Override
public PrintStream createPrintStream(String path, String tname) throws IOException {
return super.createPrintStream(path, tname);
}
}
static class FileStreamFactory extends PrintStreamFactory {
@Override
public void init(String file, String path) {
new File(path).mkdirs();
}
/**
* @param file
* @return
* @throws IOException
*/
@Override
public PrintStream createPrintStream(final String file) throws IOException {
return new PrintStream(new FileOutputStream(file));
}
}
static void checkNode(Node n, String... names) {
String expected = "";
for (String name : names) {
if (name.equals(n.getNodeName())) {
return;
}
expected += name + " or ";
}
System.err.println(MessageFormat.format(t("ERROR: Expected {0}, got {1}, failed."), new Object[] {
expected.replaceAll("....$", ""), n.getNodeName()
}));
System.exit(1);
}
private final PrintStreamFactory factory;
static class Config {
// CHECKSTYLE:OFF
int bus = DBusConnection.SESSION;
String busname = null;
String object = null;
File datafile = null;
boolean printtree = false;
boolean fileout = false;
boolean builtin = false;
// CHECKSTYLE:ON
}
static void printSyntax() {
printSyntax(System.err);
}
static void printSyntax(PrintStream o) {
o.println("Syntax: CreateInterface [file | busname object]");
o.println(" Options: --no-ignore-builtin --system -y --session -s --create-files -f --help -h --version -v");
}
public static void version() {
System.out.println("Java D-Bus Version " + System.getProperty("Version"));
System.exit(1);
}
static Config parseParams(String[] args) {
Config config = new Config();
for (String p : args) {
if ("--system".equals(p) || "-y".equals(p)) {
config.bus = DBusConnection.SYSTEM;
} else if ("--session".equals(p) || "-s".equals(p)) {
config.bus = DBusConnection.SESSION;
} else if ("--no-ignore-builtin".equals(p)) {
config.builtin = true;
} else if ("--create-files".equals(p) || "-f".equals(p)) {
config.fileout = true;
} else if ("--print-tree".equals(p) || "-p".equals(p)) {
config.printtree = true;
} else if ("--help".equals(p) || "-h".equals(p)) {
printSyntax(System.out);
System.exit(0);
} else if ("--version".equals(p) || "-v".equals(p)) {
version();
System.exit(0);
} else if (p.startsWith("-")) {
System.err.println(t("ERROR: Unknown option: ") + p);
printSyntax();
System.exit(1);
} else {
if (null == config.busname) {
config.busname = p;
} else if (null == config.object) {
config.object = p;
} else {
printSyntax();
System.exit(1);
}
}
}
if (null == config.busname) {
printSyntax();
System.exit(1);
} else if (null == config.object) {
config.datafile = new File(config.busname);
config.busname = null;
}
return config;
}
public static void main(String[] args) throws Exception {
Config config = parseParams(args);
Reader introspectdata = null;
if (null != config.busname) {
try {
DBusConnection conn = DBusConnection.getConnection(config.bus);
Introspectable in = conn.getRemoteObject(config.busname, config.object, Introspectable.class);
String id = in.Introspect();
if (null == id) {
System.err.println(t("ERROR: Failed to get introspection data"));
System.exit(1);
}
introspectdata = new StringReader(id);
conn.disconnect();
} catch (DBusException exD) {
System.err.println(t("ERROR: Failure in DBus Communications: ") + exD.getMessage());
System.exit(1);
} catch (DBusExecutionException exDee) {
System.err.println(t("ERROR: Failure in DBus Communications: ") + exDee.getMessage());
System.exit(1);
}
} else if (null != config.datafile) {
try {
introspectdata = new InputStreamReader(new FileInputStream(config.datafile));
} catch (FileNotFoundException exFnf) {
System.err.println(t("ERROR: Could not find introspection file: ") + exFnf.getMessage());
System.exit(1);
}
}
try {
PrintStreamFactory factory = config.fileout ? new FileStreamFactory() : new ConsoleStreamFactory();
CreateInterface createInterface = new CreateInterface(factory, config.builtin);
createInterface.createInterface(introspectdata);
} catch (DBusException exD) {
System.err.println("ERROR: " + exD.getMessage());
System.exit(1);
}
}
/** Output the interface for the supplied xml reader
* @param introspectdata The introspect data reader
* @throws ParserConfigurationException If the xml parser could not be configured
* @throws SAXException If a problem occurs reading the xml data
* @throws IOException If an IO error occurs
* @throws DBusException If the dbus related error occurs
*/
public void createInterface(Reader introspectdata) throws ParserConfigurationException, SAXException, IOException, DBusException {
DocumentBuilderFactory lfactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = lfactory.newDocumentBuilder();
Document document = builder.parse(new InputSource(introspectdata));
Element root = document.getDocumentElement();
checkNode(root, "node");
parseRoot(root);
}
}