Package com.caucho.eswrap.com.caucho.vfs

Source Code of com.caucho.eswrap.com.caucho.vfs.PathEcmaWrap

/*
* Copyright (c) 1998-2006 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 SoftwareFoundation, Inc.
*   59 Temple Place, Suite 330
*   Boston, MA 02111-1307  USA
*
* @author Scott Ferguson
*/

package com.caucho.eswrap.com.caucho.vfs;

import com.caucho.es.Call;
import com.caucho.es.ESBase;
import com.caucho.es.ESException;
import com.caucho.util.Exit;
import com.caucho.util.ExitListener;
import com.caucho.vfs.Path;
import com.caucho.vfs.ReadStream;
import com.caucho.vfs.ReadWritePair;
import com.caucho.vfs.WriteStream;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Iterator;

public class PathEcmaWrap {
  public static ReadStream openRead(Path p)
    throws IOException
  {
    ReadStream s = p.openRead();
    Exit.addExit(exitInputStream, s);
    return s;
  }

  public static WriteStream openWrite(Path p)
    throws IOException
  {
    WriteStream s = p.openWrite();
    Exit.addExit(exitOutputStream, s);
    return s;
  }

  public static ReadWritePair openReadWrite(Path p)
    throws IOException
  {
    ReadWritePair s = p.openReadWrite();
    Exit.addExit(exitStream, s);
    return s;
  }

  public static WriteStream openAppend(Path p)
    throws IOException
  {
    WriteStream s = p.openAppend();
    Exit.addExit(exitOutputStream, s);
    return s;
  }

  public static boolean remove(Path p)
    throws IOException
  {
    return p.remove();
  }

  public static boolean renameTo(Path p, ESBase dst)
    throws IOException
  {
    Object value;

    try {
      value = dst.toJavaObject();
    } catch (ESException e) {
      return false;
    }

    if (value == null)
      return false;

    if (value instanceof Path)
      return p.renameTo((Path) value);
    else {
      Path top = p.getParent().lookup(value.toString());
      return p.renameTo(top);
    }
  }

  // XXX: bogus for javascript
  public static Path call(Path p, String name)
    throws IOException
  {
    Path path = p.lookup(name);

    return path;
  }

  public static Path call(Path p)
    throws IOException
  {
    return p;
  }

  public static Iterator keys(Path p)
  {
    try {
      return p.iterator();
    } catch (IOException e) {
      return null;
    }
  }

  public static void write(Path path, Call call, int length)
    throws Throwable
  {
    WriteStream s = path.openWrite();

    try {
      for (int i = 0; i < length; i++) {
  String string = call.getArgString(i, length);

  s.print(string);
      }
    } finally {
      s.close();
    }
  }

  public static void writeln(Path path, Call call, int length)
  throws Throwable
  {
    WriteStream s = path.openWrite();

    try {
      for (int i = 0; i < length; i++) {
  String string = call.getArgString(i, length);

  s.print(string);
      }

      s.print('\n');
    } finally {
      s.close();
    }
  }

  public static void writeStream(Path path, InputStream is)
  throws Throwable
  {
    WriteStream s = path.openWrite();

    try {
      s.writeStream(is);
    } finally {
      s.close();
    }
  }

  public static void writeFile(Path path, Path file)
  throws Throwable
  {
    WriteStream s = path.openWrite();

    try {
      s.writeFile(file);
    } finally {
      s.close();
    }
  }

  public static void append(Path path, Call call, int length)
  throws Throwable
  {
    WriteStream s = path.openAppend();

    try {
      for (int i = 0; i < length; i++) {
  String string = call.getArgString(i, length);

  s.print(string);
      }
    } finally {
      s.close();
    }
  }

  public static void appendln(Path path, Call call, int length)
  throws Throwable
  {
    WriteStream s = path.openAppend();

    try {
      for (int i = 0; i < length; i++) {
  String string = call.getArgString(i, length);

  s.print(string);
      }

      s.print('\n');
    } finally {
      s.close();
    }
  }

  public static void appendStream(Path path, InputStream is)
  throws Throwable
  {
    WriteStream s = path.openAppend();

    try {
      s.writeStream(is);
    } finally {
      s.close();
    }
  }

  public static void appendFile(Path path, Path file)
  throws Throwable
  {
    WriteStream s = path.openAppend();

    try {
      s.writeFile(file);
    } finally {
      s.close();
    }
  }

  private static ExitListener exitStream = new ExitListener() {
    public void handleExit(Object o)
    {
      ReadWritePair pair = (ReadWritePair) o;

      pair.getReadStream().close();

      try {
  pair.getWriteStream().close();
      } catch (IOException e) {
      }
    }
  };

  private static ExitListener exitInputStream = new ExitListener() {
    public void handleExit(Object o)
    {
      InputStream stream = (InputStream) o;

      try {
  stream.close();
      } catch (IOException e) {
      }
    }
  };

  private static ExitListener exitOutputStream = new ExitListener() {
    public void handleExit(Object o)
    {
      OutputStream stream = (OutputStream) o;

      try {
  stream.close();
      } catch (IOException e) {
      }
    }
  };
}
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