/*
* Copyright (c) 1998-2007 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Nam Nguyen
*/
package com.caucho.quercus.lib;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.EnvCleanup;
import com.caucho.quercus.lib.file.BinaryInput;
import com.caucho.quercus.lib.file.FileInput;
import com.caucho.quercus.lib.file.FileOutput;
import com.caucho.quercus.lib.file.ReadStreamInput;
import com.caucho.vfs.ReadStream;
import com.caucho.vfs.VfsStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Represents an input stream for a proc_open process.
*/
public class ProcOpenInput extends ReadStreamInput
implements EnvCleanup
{
private static final Logger log
= Logger.getLogger(FileInput.class.getName());
private Env _env;
private InputStream _in;
private FileOutput _out;
public ProcOpenInput(Env env, InputStream in)
throws IOException
{
super(env);
_env = env;
_in = in;
env.addCleanup(this);
init(new ReadStream(new VfsStream(in, null)));
}
public ProcOpenInput(Env env, InputStream in, FileOutput out)
{
super(env);
_env = env;
_in = in;
// Invoke removeCleanup() to ensure that out is not closed
// before cleanup() is invoked for this object.
env.removeCleanup(out);
_out = out;
env.addCleanup(this);
init(new ReadStream(new VfsStream(in, null)));
}
/**
* Opens a copy.
*/
public BinaryInput openCopy()
throws IOException
{
return new ProcOpenInput(_env, _in, _out);
}
/**
* Returns the number of bytes available to be read, 0 if no known.
*/
public long getLength()
{
return 0;
}
/**
* Converts to a string.
*/
public String toString()
{
if (_out != null)
return "ProcOpenInput[" + _out + "]";
else
return "ProcOpenInput[pipe]";
}
public void close()
{
_env.removeCleanup(this);
cleanup();
}
/**
* Implements the EnvCleanup interface.
*/
public void cleanup()
{
try {
if (_out != null) {
int ch;
while ((ch = _in.read()) >= 0) {
_out.write(ch);
}
_out.close();
}
_in.close();
}
catch (IOException e) {
log.log(Level.FINE, e.toString(), e);
_env.warning(e);
}
}
}