/**
 * $Id: xcat.java 388 2010-03-08 12:27:19Z daldei $
 * $Date: 2010-03-08 07:27:19 -0500 (Mon, 08 Mar 2010) $
 *
 */

package org.xmlsh.internal.commands;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.zip.GZIPOutputStream;
import org.xmlsh.core.InputPort;
import org.xmlsh.core.Options;
import org.xmlsh.core.XCommand;
import org.xmlsh.core.XValue;
import org.xmlsh.sh.shell.SerializeOpts;

public class xgzip extends XCommand {

  @Override
  public int run(List<XValue> args) throws Exception {

    Options opts = new Options("f=file:", SerializeOpts.getOptionDefs());
    opts.parse(args);

    XValue zipfile = opts.getOptValue("f");

    args = opts.getRemainingArgs();

    SerializeOpts serializeOpts = getSerializeOpts(opts);

    try (
        GZIPOutputStream zos = new GZIPOutputStream(
            zipfile == null ? getStdout().asOutputStream(serializeOpts)
                : getOutputStream(zipfile.toString(), false, serializeOpts))) {

      XValue xin = args.size() > 0 ? args.get(0) : null;

      InputPort iport = this.getInput(xin);

      int ret = 0;
      ret = gzip(iport.asInputStream(serializeOpts), zos);

      zos.finish();
      return ret;

    }

  }

  private int gzip(InputStream is, GZIPOutputStream zos) throws IOException {
    int ret = 0;

    byte[] buf = new byte[1024];
    int len;
    while((len = is.read(buf)) > 0)
      zos.write(buf, 0, len);

    is.close();
    zos.close();
    return ret;

  }
}

//
//
// Copyright (C) 2008-2014 David A. Lee.
//
// The contents of this file are subject to the "Simplified BSD License" (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.opensource.org/licenses/bsd-license.php
//
// 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.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is David A. Lee
//
// Portions created by (your name) are Copyright (C) (your legal entity). All
// Rights Reserved.
//
// Contributor(s): none.
//