FileDescriptorIO.java
- /***** BEGIN LICENSE BLOCK *****
- * Version: EPL 1.0/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Eclipse Public
- * License Version 1.0 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.eclipse.org/legal/epl-v10.html
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * Copyright (C) 2008 JRuby project
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
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- * use your version of this file under the terms of the EPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the EPL, the GPL or the LGPL.
- ***** END LICENSE BLOCK *****/
- package org.jruby.ext.ffi.io;
- import jnr.posix.FileStat;
- import org.jruby.Ruby;
- import org.jruby.RubyClass;
- import org.jruby.RubyIO;
- import org.jruby.RubyModule;
- import org.jruby.RubyNumeric;
- import org.jruby.anno.JRubyClass;
- import org.jruby.anno.JRubyMethod;
- import org.jruby.runtime.ObjectAllocator;
- import org.jruby.runtime.ThreadContext;
- import org.jruby.runtime.builtin.IRubyObject;
- import org.jruby.util.io.ModeFlags;
- import java.nio.channels.ByteChannel;
- /**
- * An IO implementation that reads/writes to a native file descriptor.
- */
- @JRubyClass(name="FFI::" + FileDescriptorIO.CLASS_NAME, parent="IO")
- public class FileDescriptorIO extends RubyIO {
- public static final String CLASS_NAME = "FileDescriptorIO";
- private static final class Allocator implements ObjectAllocator {
- public final IRubyObject allocate(Ruby runtime, RubyClass klass) {
- return new FileDescriptorIO(runtime, klass);
- }
- private static final ObjectAllocator INSTANCE = new Allocator();
- }
- public FileDescriptorIO(Ruby runtime, RubyClass klass) {
- super(runtime, klass);
- MakeOpenFile();
- }
- public FileDescriptorIO(Ruby runtime, IRubyObject fd) {
- super(runtime, runtime.getModule("FFI").getClass(CLASS_NAME));
- MakeOpenFile();
- ModeFlags modes = newModeFlags(runtime, ModeFlags.RDWR);
- int fileno = RubyNumeric.fix2int(fd);
- FileStat stat = runtime.getPosix().fstat(fileno);
- ByteChannel channel;
- if (stat.isSocket()) {
- channel = new jnr.enxio.channels.NativeSocketChannel(fileno);
- } else if (stat.isBlockDev() || stat.isCharDev()) {
- channel = new jnr.enxio.channels.NativeDeviceChannel(fileno);
- } else {
- channel = new FileDescriptorByteChannel(runtime, fileno);
- }
- // openFile.setMainStream(ChannelStream.open(getRuntime(), new ChannelDescriptor(channel, modes, FileDescriptorHelper.wrap(fileno))));
- openFile.setChannel(channel);
- openFile.setMode(modes.getOpenFileFlags());
- openFile.setMode(modes.getOpenFileFlags());
- openFile.setSync(true);
- }
- public static RubyClass createFileDescriptorIOClass(Ruby runtime, RubyModule module) {
- RubyClass result = runtime.defineClassUnder(CLASS_NAME, runtime.getClass("IO"),
- Allocator.INSTANCE, module);
- result.defineAnnotatedMethods(FileDescriptorIO.class);
- result.defineAnnotatedConstants(FileDescriptorIO.class);
- return result;
- }
- @JRubyMethod(name = "new", meta = true)
- public static FileDescriptorIO newInstance(ThreadContext context, IRubyObject recv, IRubyObject fd) {
- return new FileDescriptorIO(context.runtime, fd);
- }
- @JRubyMethod(name = "wrap", required = 1, meta = true)
- public static RubyIO wrap(ThreadContext context, IRubyObject recv, IRubyObject fd) {
- return new FileDescriptorIO(context.runtime, fd);
- }
- static class FileDescriptorHelper {
- static java.lang.reflect.Constructor<java.io.FileDescriptor> CONSTRUCTOR;
- static {
- java.lang.reflect.Constructor<java.io.FileDescriptor> constructor;
- try {
- constructor = java.io.FileDescriptor.class.getDeclaredConstructor(int.class);
- constructor.setAccessible(true);
- } catch (Throwable t) {
- constructor = null;
- }
- CONSTRUCTOR = constructor;
- }
- public static java.io.FileDescriptor wrap(int fileno) {
- try {
- return CONSTRUCTOR != null ? CONSTRUCTOR.newInstance(fileno) : new java.io.FileDescriptor();
- } catch (IllegalAccessException iae) {
- return new java.io.FileDescriptor();
- } catch (InstantiationException ie) {
- return new java.io.FileDescriptor();
- } catch (java.lang.reflect.InvocationTargetException ite) {
- return new java.io.FileDescriptor();
- }
- }
- }
- }