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RubyIO.java
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RubyIO.java
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/*
**** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common 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/cpl-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) 2001-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
* Copyright (C) 2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
* Copyright (C) 2002-2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
* Copyright (C) 2002-2006 Thomas E Enebo <enebo@acm.org>
* Copyright (C) 2004-2006 Charles O Nutter <headius@headius.com>
* Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
* Copyright (C) 2006 Evan Buswell <ebuswell@gmail.com>
* Copyright (C) 2007 Miguel Covarrubias <mlcovarrubias@gmail.com>
*
* 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
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the CPL, 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 CPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby;
import static java.lang.System.out;
import org.jruby.util.io.FileExistsException;
import org.jruby.util.io.STDIO;
import org.jruby.util.io.OpenFile;
import org.jruby.util.io.ChannelDescriptor;
import java.io.EOFException;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.ref.Reference;
import java.lang.ref.WeakReference;
import java.nio.channels.Channel;
import java.nio.channels.Channels;
import java.nio.channels.Pipe;
import java.nio.channels.SelectableChannel;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.jruby.anno.JRubyMethod;
import org.jruby.runtime.Block;
import org.jruby.runtime.CallbackFactory;
import org.jruby.runtime.MethodIndex;
import org.jruby.runtime.ObjectAllocator;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.Visibility;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.util.ByteList;
import org.jruby.util.io.Stream;
import org.jruby.util.io.ModeFlags;
import org.jruby.util.ShellLauncher;
import org.jruby.util.TypeConverter;
import org.jruby.util.io.BadDescriptorException;
import org.jruby.util.io.ChannelStream;
import org.jruby.util.io.InvalidValueException;
import org.jruby.util.io.PipeException;
/**
*
* @author jpetersen
*/
public class RubyIO extends RubyObject {
protected OpenFile openFile;
public void registerDescriptor(ChannelDescriptor descriptor) {
getRuntime().getDescriptors().put(new Integer(descriptor.getFileno()), new WeakReference<ChannelDescriptor>(descriptor));
}
public void unregisterDescriptor(int aFileno) {
getRuntime().getDescriptors().remove(new Integer(aFileno));
}
public ChannelDescriptor getDescriptorByFileno(int aFileno) {
Reference<ChannelDescriptor> reference = getRuntime().getDescriptors().get(new Integer(aFileno));
if (reference == null) {
return null;
}
return (ChannelDescriptor) reference.get();
}
// FIXME can't use static; would interfere with other runtimes in the same JVM
protected static int filenoIndex = 2;
public static int getNewFileno() {
filenoIndex++;
return filenoIndex;
}
// This should only be called by this and RubyFile.
// It allows this object to be created without a IOHandler.
public RubyIO(Ruby runtime, RubyClass type) {
super(runtime, type);
openFile = new OpenFile();
}
public RubyIO(Ruby runtime, OutputStream outputStream) {
super(runtime, runtime.getIO());
// We only want IO objects with valid streams (better to error now).
if (outputStream == null) {
throw runtime.newIOError("Opening invalid stream");
}
openFile = new OpenFile();
try {
openFile.setMainStream(new ChannelStream(runtime, new ChannelDescriptor(Channels.newChannel(outputStream), getNewFileno(), new FileDescriptor())));
} catch (InvalidValueException e) {
throw getRuntime().newErrnoEINVALError();
}
openFile.setMode(OpenFile.WRITABLE | OpenFile.APPEND);
registerDescriptor(openFile.getMainStream().getDescriptor());
}
public RubyIO(Ruby runtime, InputStream inputStream) {
super(runtime, runtime.getIO());
if (inputStream == null) {
throw runtime.newIOError("Opening invalid stream");
}
openFile = new OpenFile();
try {
openFile.setMainStream(new ChannelStream(runtime, new ChannelDescriptor(Channels.newChannel(inputStream), getNewFileno(), new FileDescriptor())));
} catch (InvalidValueException e) {
throw getRuntime().newErrnoEINVALError();
}
openFile.setMode(OpenFile.READABLE);
registerDescriptor(openFile.getMainStream().getDescriptor());
}
public RubyIO(Ruby runtime, Channel channel) {
super(runtime, runtime.getIO());
// We only want IO objects with valid streams (better to error now).
if (channel == null) {
throw runtime.newIOError("Opening invalid stream");
}
openFile = new OpenFile();
try {
openFile.setMainStream(new ChannelStream(runtime, new ChannelDescriptor(channel, getNewFileno(), new FileDescriptor())));
} catch (InvalidValueException e) {
throw getRuntime().newErrnoEINVALError();
}
openFile.setMode(openFile.getMainStream().getModes().getOpenFileFlags());
registerDescriptor(openFile.getMainStream().getDescriptor());
}
public RubyIO(Ruby runtime, Process process, ModeFlags modes) {
super(runtime, runtime.getIO());
openFile = new OpenFile();
openFile.setMode(modes.getOpenFileFlags() | OpenFile.SYNC);
openFile.setProcess(process);
try {
InputStream pipeIn = process.getInputStream();
ChannelDescriptor main = new ChannelDescriptor(
Channels.newChannel(pipeIn),
getNewFileno(),
new FileDescriptor());
OutputStream pipeOut = process.getOutputStream();
ChannelDescriptor pipe = new ChannelDescriptor(
Channels.newChannel(pipeOut),
getNewFileno(),
new FileDescriptor());
if (!openFile.isReadable()) {
main.close();
pipeIn.close();
} else {
openFile.setMainStream(new ChannelStream(getRuntime(), main));
}
if (!openFile.isWritable()) {
pipe.close();
pipeOut.close();
} else {
if (openFile.getMainStream() != null) {
openFile.setPipeStream(new ChannelStream(getRuntime(), pipe));
} else {
openFile.setMainStream(new ChannelStream(getRuntime(), pipe));
}
}
registerDescriptor(main);
registerDescriptor(pipe);
} catch (BadDescriptorException ex) {
throw getRuntime().newErrnoEBADFError();
} catch (IOException ex) {
throw getRuntime().newIOErrorFromException(ex);
} catch (InvalidValueException e) {
throw getRuntime().newErrnoEINVALError();
}
}
public RubyIO(Ruby runtime, STDIO stdio) {
super(runtime, runtime.getIO());
openFile = new OpenFile();
try {
switch (stdio) {
case IN:
openFile.setMainStream(
new ChannelStream(
runtime,
new ChannelDescriptor(Channels.newChannel(runtime.getIn()), 0, new ModeFlags(ModeFlags.RDONLY), FileDescriptor.in),
FileDescriptor.in));
break;
case OUT:
openFile.setMainStream(
new ChannelStream(
runtime,
new ChannelDescriptor(Channels.newChannel(runtime.getOut()), 1, new ModeFlags(ModeFlags.WRONLY | ModeFlags.APPEND), FileDescriptor.out),
FileDescriptor.out));
openFile.getMainStream().setSync(true);
break;
case ERR:
openFile.setMainStream(
new ChannelStream(
runtime,
new ChannelDescriptor(Channels.newChannel(runtime.getErr()), 2, new ModeFlags(ModeFlags.WRONLY | ModeFlags.APPEND), FileDescriptor.out),
FileDescriptor.err));
openFile.getMainStream().setSync(true);
break;
}
} catch (InvalidValueException ex) {
throw getRuntime().newErrnoEINVALError();
}
openFile.setMode(openFile.getMainStream().getModes().getOpenFileFlags());
registerDescriptor(openFile.getMainStream().getDescriptor());
}
public OpenFile getOpenFile() {
return openFile;
}
private static ObjectAllocator IO_ALLOCATOR = new ObjectAllocator() {
public IRubyObject allocate(Ruby runtime, RubyClass klass) {
return new RubyIO(runtime, klass);
}
};
public static RubyClass createIOClass(Ruby runtime) {
RubyClass ioClass = runtime.defineClass("IO", runtime.getObject(), IO_ALLOCATOR);
CallbackFactory callbackFactory = runtime.callbackFactory(RubyIO.class);
ioClass.kindOf = new RubyModule.KindOf() {
@Override
public boolean isKindOf(IRubyObject obj, RubyModule type) {
return obj instanceof RubyIO;
}
};
ioClass.includeModule(runtime.getEnumerable());
// TODO: Implement tty? and isatty. We have no real capability to
// determine this from java, but if we could set tty status, then
// we could invoke jruby differently to allow stdin to return true
// on this. This would allow things like cgi.rb to work properly.
ioClass.defineAnnotatedMethods(RubyIO.class);
// Constants for seek
ioClass.fastSetConstant("SEEK_SET", runtime.newFixnum(Stream.SEEK_SET));
ioClass.fastSetConstant("SEEK_CUR", runtime.newFixnum(Stream.SEEK_CUR));
ioClass.fastSetConstant("SEEK_END", runtime.newFixnum(Stream.SEEK_END));
ioClass.dispatcher = callbackFactory.createDispatcher(ioClass);
return ioClass;
}
public OutputStream getOutStream() {
return openFile.getMainStream().newOutputStream();
}
public InputStream getInStream() {
return openFile.getMainStream().newInputStream();
}
public Channel getChannel() {
if (openFile.getMainStream() instanceof ChannelStream) {
return ((ChannelStream) openFile.getMainStream()).getDescriptor().getChannel();
} else {
return null;
}
}
public Stream getHandler() {
return openFile.getMainStream();
}
@JRubyMethod(name = "reopen", required = 1, optional = 1)
public IRubyObject reopen(IRubyObject[] args) throws InvalidValueException {
if (args.length < 1) {
throw getRuntime().newArgumentError("wrong number of arguments");
}
IRubyObject tmp = TypeConverter.convertToTypeWithCheck(args[0],
getRuntime().getIO(), MethodIndex.getIndex("to_io"), "to_io");
if (!tmp.isNil()) {
try {
RubyIO ios = (RubyIO) tmp;
if (ios.openFile == this.openFile) {
return this;
}
OpenFile originalFile = ios.openFile;
OpenFile selfFile = openFile;
long pos = 0;
if (originalFile.isReadable()) {
pos = originalFile.getMainStream().fgetpos();
}
if (originalFile.getPipeStream() != null) {
originalFile.getPipeStream().fflush();
} else if (originalFile.isWritable()) {
originalFile.getMainStream().fflush();
}
if (selfFile.isWritable()) {
selfFile.getWriteStream().fflush();
}
selfFile.setMode(originalFile.getMode());
selfFile.setProcess(originalFile.getProcess());
selfFile.setLineNumber(originalFile.getLineNumber());
selfFile.setPath(originalFile.getPath());
selfFile.setFinalizer(originalFile.getFinalizer());
ChannelDescriptor selfDescriptor = selfFile.getMainStream().getDescriptor();
ChannelDescriptor originalDescriptor = originalFile.getMainStream().getDescriptor();
// confirm we're not reopening self's channel
if (selfDescriptor.getChannel() != originalDescriptor.getChannel()) {
// check if we're a stdio IO, and ensure we're not badly mutilated
if (selfDescriptor.getFileno() >=0 && selfDescriptor.getFileno() <= 2) {
selfFile.getMainStream().clearerr();
// dup2 new fd into self to preserve fileno and references to it
originalDescriptor.dup2(selfDescriptor);
// re-register, since fileno points at something new now
registerDescriptor(selfFile.getMainStream().getDescriptor());
} else {
Stream pipeFile = selfFile.getPipeStream();
int mode = selfFile.getMode();
selfFile.getMainStream().fclose();
selfFile.setPipeStream(null);
// TODO: turn off readable? am I reading this right?
// This only seems to be used while duping below, since modes gets
// reset to actual modes afterward
//fptr->mode &= (m & FMODE_READABLE) ? ~FMODE_READABLE : ~FMODE_WRITABLE;
if (pipeFile != null) {
selfFile.setMainStream(ChannelStream.fdopen(getRuntime(), originalDescriptor, new ModeFlags()));
selfFile.setPipeStream(pipeFile);
} else {
selfFile.setMainStream(
new ChannelStream(
getRuntime(),
originalDescriptor.dup2(selfDescriptor.getFileno())));
// re-register the descriptor
registerDescriptor(selfFile.getMainStream().getDescriptor());
// since we're not actually duping the incoming channel into our handler, we need to
// copy the original sync behavior from the other handler
selfFile.getMainStream().setSync(selfFile.getMainStream().isSync());
}
selfFile.setMode(mode);
}
// TODO: anything threads attached to original fd are notified of the close...
// see rb_thread_fd_close
if (originalFile.isReadable() && pos >= 0) {
selfFile.seek(pos, Stream.SEEK_SET);
originalFile.seek(pos, Stream.SEEK_SET);
}
}
// TODO: more pipe logic
// if (fptr->f2 && fd != fileno(fptr->f2)) {
// fd = fileno(fptr->f2);
// if (!orig->f2) {
// fclose(fptr->f2);
// rb_thread_fd_close(fd);
// fptr->f2 = 0;
// }
// else if (fd != (fd2 = fileno(orig->f2))) {
// fclose(fptr->f2);
// rb_thread_fd_close(fd);
// if (dup2(fd2, fd) < 0)
// rb_sys_fail(orig->path);
// fptr->f2 = rb_fdopen(fd, "w");
// }
// }
// TODO: restore binary mode
// if (fptr->mode & FMODE_BINMODE) {
// rb_io_binmode(io);
// }
// TODO: set our metaclass to target's class (i.e. scary!)
} catch (IOException ex) { // TODO: better error handling
throw getRuntime().newIOError("could not reopen: " + ex.getMessage());
} catch (BadDescriptorException ex) {
throw getRuntime().newIOError("could not reopen: " + ex.getMessage());
} catch (PipeException ex) {
throw getRuntime().newIOError("could not reopen: " + ex.getMessage());
}
} else {
IRubyObject pathString = args[0].convertToString();
// TODO: check safe, taint on incoming string
if (openFile == null) {
openFile = new OpenFile();
}
try {
ModeFlags modes;
if (args.length > 1) {
IRubyObject modeString = args[1].convertToString();
modes = getIOModes(getRuntime(), modeString.toString());
openFile.setMode(modes.getOpenFileFlags());
} else {
modes = getIOModes(getRuntime(), "r");
}
String path = pathString.toString();
// Ruby code frequently uses a platform check to choose "NUL:" on windows
// but since that check doesn't work well on JRuby, we help it out
if ("/dev/null".equals(path) || System.getProperty("os.name").contains("Windows")) {
path = "NUL:";
}
openFile.setPath(path);
if (openFile.getMainStream() == null) {
try {
openFile.setMainStream(ChannelStream.fopen(getRuntime(), path, modes));
} catch (FileExistsException fee) {
throw getRuntime().newErrnoEEXISTError(path);
}
registerDescriptor(openFile.getMainStream().getDescriptor());
if (openFile.getPipeStream() != null) {
openFile.getPipeStream().fclose();
unregisterDescriptor(openFile.getPipeStream().getDescriptor().getFileno());
openFile.setPipeStream(null);
}
return this;
} else {
// TODO: This is an freopen in MRI, this is close, but not quite the same
openFile.getMainStream().freopen(path, getIOModes(getRuntime(), openFile.getModeAsString(getRuntime())));
// re-register
registerDescriptor(openFile.getMainStream().getDescriptor());
if (openFile.getPipeStream() != null) {
// TODO: pipe handler to be reopened with path and "w" mode
}
}
} catch (PipeException pe) {
throw getRuntime().newErrnoEPIPEError();
} catch (IOException ex) {
throw getRuntime().newIOErrorFromException(ex);
} catch (BadDescriptorException ex) {
throw getRuntime().newErrnoEBADFError();
} catch (InvalidValueException e) {
throw getRuntime().newErrnoEINVALError();
}
}
// A potentially previously close IO is being 'reopened'.
return this;
}
public static ModeFlags getIOModes(Ruby runtime, String modesString) throws InvalidValueException {
return new ModeFlags(getIOModesIntFromString(runtime, modesString));
}
public static int getIOModesIntFromString(Ruby runtime, String modesString) {
int modes = 0;
int length = modesString.length();
if (length == 0) {
throw runtime.newArgumentError("illegal access mode");
}
switch (modesString.charAt(0)) {
case 'r' :
modes |= ModeFlags.RDONLY;
break;
case 'a' :
modes |= ModeFlags.APPEND | ModeFlags.WRONLY | ModeFlags.CREAT;
break;
case 'w' :
modes |= ModeFlags.WRONLY | ModeFlags.TRUNC | ModeFlags.CREAT;
break;
default :
throw runtime.newArgumentError("illegal access mode " + modes);
}
for (int n = 1; n < length; n++) {
switch (modesString.charAt(n)) {
case 'b':
modes |= ModeFlags.BINARY;
break;
case '+':
modes = (modes & ~ModeFlags.ACCMODE) | ModeFlags.RDWR;
break;
default:
throw runtime.newArgumentError("illegal access mode " + modes);
}
}
return modes;
}
private ByteList getSeparatorForGets(IRubyObject[] args) {
IRubyObject sepVal;
if (args.length > 0) {
sepVal = args[0];
} else {
sepVal = getRuntime().getRecordSeparatorVar().get();
}
ByteList separator = sepVal.isNil() ? null : ((RubyString) sepVal).getByteList();
if (separator != null && separator.realSize == 0) {
separator = Stream.PARAGRAPH_DELIMETER;
}
return separator;
}
public IRubyObject getline(ByteList separator) {
try {
openFile.checkReadable(getRuntime());
boolean isParagraph = separator == Stream.PARAGRAPH_DELIMETER;
if (isParagraph) {
swallow('\n');
}
if (separator == null) {
IRubyObject str = readAll(null);
if (((RubyString)str).getByteList().length() == 0) {
return getRuntime().getNil();
}
return str;
} else if (separator.length() == 1) {
return getlineFast(separator.get(0));
} else {
Stream readStream = openFile.getMainStream();
int c = -1;
int newline = separator.get(separator.length() - 1);
ByteList buf = new ByteList(1024);
boolean update = false;
while (true) {
do {
readCheck(readStream);
readStream.clearerr();
try {
c = readStream.fgetc();
} catch (EOFException e) {
c = -1;
}
if (c == -1) {
// TODO: clear error, wait for it to become readable
if (c == -1) {
if (update) {
return RubyString.newString(getRuntime(), buf);
}
break;
}
}
buf.append(c);
update = true;
} while (c != newline); // loop until we see the nth separator char
// if we hit EOF, we're done
if (c == -1) {
break;
}
// if we've found the last char of the separator,
// and we've found at least as many characters as separator length,
// and the last n characters of our buffer match the separator, we're done
if (c == newline && buf.length() >= separator.length() &&
0 == ByteList.memcmp(buf.unsafeBytes(), buf.begin + buf.realSize - separator.length(), separator.unsafeBytes(), separator.begin, separator.realSize)) {
break;
}
}
if (isParagraph) {
if (c != -1) {
swallow('\n');
}
}
if (!update) {
return getRuntime().getNil();
} else {
openFile.setLineNumber(openFile.getLineNumber() + 1);
// this is for a range check, near as I can tell
RubyNumeric.int2fix(getRuntime(), openFile.getLineNumber());
RubyString str = RubyString.newString(getRuntime(), buf);
str.setTaint(true);
return str;
}
}
} catch (PipeException ex) {
throw getRuntime().newErrnoEPIPEError();
} catch (InvalidValueException ex) {
throw getRuntime().newErrnoEINVALError();
} catch (EOFException e) {
return getRuntime().getNil();
} catch (BadDescriptorException e) {
throw getRuntime().newErrnoEBADFError();
} catch (IOException e) {
throw getRuntime().newIOError(e.getMessage());
}
}
protected boolean swallow(int term) throws IOException, BadDescriptorException {
Stream readStream = openFile.getMainStream();
int c;
do {
readCheck(readStream);
try {
c = readStream.fgetc();
} catch (EOFException e) {
c = -1;
}
if (c != term) {
return true;
}
} while (c != -1);
return false;
}
public IRubyObject getlineFast(int delim) throws IOException, BadDescriptorException {
Stream readStream = openFile.getMainStream();
int c = -1;
ByteList buf = new ByteList(1024);
boolean update = false;
do {
readCheck(readStream);
readStream.clearerr();
try {
c = readStream.fgetc();
} catch (EOFException e) {
c = -1;
}
if (c == -1) {
// TODO: clear error, wait for it to become readable
if (c == -1) {
if (update) {
return RubyString.newString(getRuntime(), buf);
}
break;
}
}
buf.append(c);
update = true;
} while (c != delim);
if (!update) {
return getRuntime().getNil();
} else {
openFile.setLineNumber(openFile.getLineNumber() + 1);
// this is for a range check, near as I can tell
RubyNumeric.int2fix(getRuntime(), openFile.getLineNumber());
RubyString str = RubyString.newString(getRuntime(), buf);
str.setTaint(true);
return str;
}
}
// IO class methods.
@JRubyMethod(name = {"new"}, rest = true, frame = true, meta = true)
public static IRubyObject newInstance(IRubyObject recv, IRubyObject[] args, Block block) {
RubyClass klass = (RubyClass)recv;
if (block.isGiven()) {
String className = klass.getName();
recv.getRuntime().getWarnings().warn(className + "::new() does not take block; use " + className + "::open() instead");
}
return klass.newInstance(args, block);
}
@JRubyMethod(name = "initialize", required = 1, optional = 1, frame = true, visibility = Visibility.PRIVATE)
public IRubyObject initialize(IRubyObject[] args, Block unusedBlock) {
int argCount = args.length;
ModeFlags modes;
int fileno = RubyNumeric.fix2int(args[0]);
try {
ChannelDescriptor descriptor = getDescriptorByFileno(fileno);
if (descriptor == null) {
throw getRuntime().newErrnoEBADFError();
}
descriptor.checkOpen();
if (argCount == 2) {
if (args[1] instanceof RubyFixnum) {
modes = new ModeFlags(RubyFixnum.fix2long(args[1]));
} else {
modes = getIOModes(getRuntime(), (args[1].convertToString().toString()));
}
} else {
// use original modes
modes = descriptor.getOriginalModes();
}
openFile.setMode(modes.getOpenFileFlags());
openFile.setMainStream(fdopen(descriptor, modes));
} catch (BadDescriptorException ex) {
throw getRuntime().newErrnoEBADFError();
} catch (InvalidValueException ive) {
throw getRuntime().newErrnoEINVALError();
}
return this;
}
protected Stream fdopen(ChannelDescriptor existingDescriptor, ModeFlags modes) throws InvalidValueException {
// See if we already have this descriptor open.
// If so then we can mostly share the handler (keep open
// file, but possibly change the mode).
if (existingDescriptor == null) {
// redundant, done above as well
// this seems unlikely to happen unless it's a totally bogus fileno
// ...so do we even need to bother trying to create one?
// IN FACT, we should probably raise an error, yes?
throw getRuntime().newErrnoEBADFError();
// if (mode == null) {
// mode = "r";
// }
//
// try {
// openFile.setMainStream(streamForFileno(getRuntime(), fileno));
// } catch (BadDescriptorException e) {
// throw getRuntime().newErrnoEBADFError();
// } catch (IOException e) {
// throw getRuntime().newErrnoEBADFError();
// }
// //modes = new IOModes(getRuntime(), mode);
//
// registerStream(openFile.getMainStream());
} else {
// We are creating a new IO object that shares the same
// IOHandler (and fileno).
return ChannelStream.fdopen(getRuntime(), existingDescriptor, modes);
}
}
@JRubyMethod(name = "open", required = 1, optional = 2, frame = true, meta = true)
public static IRubyObject open(IRubyObject recv, IRubyObject[] args, Block block) {
Ruby runtime = recv.getRuntime();
RubyClass klass = (RubyClass)recv;
RubyIO io = (RubyIO)klass.newInstance(args, block);
if (block.isGiven()) {
try {
return block.yield(runtime.getCurrentContext(), io);
} finally {
if (io.openFile.isOpen()) {
io.close();
}
}
}
return io;
}
// This appears to be some windows-only mode. On a java platform this is a no-op
@JRubyMethod(name = "binmode")
public IRubyObject binmode() {
return this;
}
protected void checkInitialized() {
if (openFile == null) {
throw getRuntime().newIOError("uninitialized stream");
}
}
protected void checkClosed() {
if (openFile.getMainStream() == null && openFile.getPipeStream() == null) {
throw getRuntime().newIOError("closed stream");
}
}
@JRubyMethod(name = "syswrite", required = 1)
public IRubyObject syswrite(IRubyObject obj) {
try {
RubyString string = obj.convertToString();
openFile.checkWritable(getRuntime());
Stream writeStream = openFile.getWriteStream();
if (openFile.isWriteBuffered()) {
getRuntime().getWarnings().warn("syswrite for buffered IO");
}
if (!writeStream.getDescriptor().isWritable()) {
openFile.checkClosed(getRuntime());
}
int read = writeStream.getDescriptor().write(string.getByteList());
if (read == -1) {
// TODO? I think this ends up propagating from normal Java exceptions
// sys_fail(openFile.getPath())
}
return getRuntime().newFixnum(read);
} catch (InvalidValueException ex) {
throw getRuntime().newErrnoEINVALError();
} catch (PipeException ex) {
throw getRuntime().newErrnoEPIPEError();
} catch (BadDescriptorException e) {
throw getRuntime().newErrnoEBADFError();
} catch (IOException e) {
e.printStackTrace();
throw getRuntime().newSystemCallError(e.getMessage());
}
}
/** io_write
*
*/
@JRubyMethod(name = "write", required = 1)
public IRubyObject write(IRubyObject obj) {
getRuntime().secure(4);
RubyString str;
if (obj instanceof RubyString) {
str = (RubyString)obj;
} else {
str = (RubyString)obj.asString();
}
// TODO: Ruby reuses this logic for other "write" behavior by checking if it's an IO and calling write again
if (str.getByteList().length() == 0) {
return getRuntime().newFixnum(0);
}
try {
openFile.checkWritable(getRuntime());
int written = fwrite(str.getByteList());
if (written == -1) {
// TODO: sys fail
}
// if not sync, we switch to write buffered mode
if (!openFile.isSync()) {
openFile.setWriteBuffered();
}
return getRuntime().newFixnum(written);
} catch (IOException ex) {
throw getRuntime().newIOErrorFromException(ex);
} catch (BadDescriptorException ex) {
throw getRuntime().newErrnoEBADFError();
} catch (InvalidValueException ex) {
throw getRuntime().newErrnoEINVALError();
} catch (PipeException ex) {
throw getRuntime().newErrnoEPIPEError();
}
}
protected int fwrite(ByteList buffer) {
int n, r, l, offset = 0;
Stream writeStream = openFile.getWriteStream();
int len = buffer.length();
// if ((n = len) <= 0) return n;
if (len == 0) return 0;
try {
if (openFile.isSync()) {
openFile.fflush(writeStream);
// TODO: why is this guarded?
// if (!rb_thread_fd_writable(fileno(f))) {
// rb_io_check_closed(fptr);
// }
// TODO: loop until it's all written
//while (offset < len) {
writeStream.getDescriptor().write(buffer);
//}
return len;
// TODO: all this stuff...some pipe logic, some async thread stuff
// retry:
// l = n;
// if (PIPE_BUF < l &&
// !rb_thread_critical &&
// !rb_thread_alone() &&
// wsplit_p(fptr)) {
// l = PIPE_BUF;
// }
// TRAP_BEG;
// r = write(fileno(f), RSTRING(str)->ptr+offset, l);
// TRAP_END;
// if (r == n) return len;
// if (0 <= r) {
// offset += r;
// n -= r;
// errno = EAGAIN;
// }
// if (rb_io_wait_writable(fileno(f))) {
// rb_io_check_closed(fptr);
// if (offset < RSTRING(str)->len)
// goto retry;
// }
// return -1L;
}