/*
* Copyright (c) 1998-2010 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 Emil Ong
*/
package com.caucho.quercus.lib.file;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.EnvCleanup;
import com.caucho.vfs.ReadStream;
import com.caucho.vfs.VfsStream;
import java.io.IOException;
import java.util.logging.Logger;
/**
* Represents an input stream for a popen'ed process.
*/
public class PopenInput extends ReadStreamInput
implements EnvCleanup
{
private static final Logger log
= Logger.getLogger(FileInput.class.getName());
private Env _env;
private Process _process;
public PopenInput(Env env, Process process)
throws IOException
{
super(env);
_env = env;
_env.addCleanup(this);
_process = process;
init(new ReadStream(new VfsStream(_process.getInputStream(), null)));
_process.getOutputStream().close();
}
/**
* Opens a copy.
*/
public BinaryInput openCopy()
throws IOException
{
return new PopenInput(_env, _process);
}
/**
* 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()
{
return "PopenInput[" + _process + "]";
}
public int pclose()
{
super.close();
try {
return _process.waitFor();
} catch (Exception e) {
return -1;
} finally {
_env.removeCleanup(this);
}
}
public void close()
{
pclose();
}
/**
* Implements the EnvCleanup interface.
*/
public void cleanup()
{
pclose();
}
}