IORedirect.java

/**
 * $Id$
 * $Date$
 *
 */

package org.xmlsh.sh.core;

import java.io.PrintWriter;
import org.xmlsh.core.EvalEnv;
import org.xmlsh.sh.grammar.Token;
import org.xmlsh.sh.shell.Shell;
import lombok.extern.log4j.Log4j2;

@Log4j2
public class IORedirect {
  private static final EvalEnv mPortEnv = EvalEnv.basicInstance();
  private String mPortname;	// (port)
  private IOFile mFile;		// < file
  private IOHere mHere;		// <<tag ...tag
  private Token mFirstToken;

  // <port>op -> (port) op

  /* (port)>(port) */
  public IORedirect(Token t, String portstring) {
    mLogger.entry(t,portstring);
    mFirstToken = t;
    // OP(POT)
    if(portstring.startsWith("<(") ||
        portstring.startsWith(">(")) {
      String op = portstring.substring(0, 1);
      String port = portstring.substring(1);
      mLogger.debug("OP(PORT) {} {}", op, port);

      mFile = new IOFile(op, port);

    }
    else
    // (port)OP<port)
    if(portstring.startsWith("(")) {
      mPortname = portstring.substring(0, portstring.indexOf(')') + 1);
      String op = portstring.substring(mPortname.length(),
          portstring.lastIndexOf('('));
      String port2 = portstring.substring(mPortname.length() + op.length());
      mLogger.debug("mPortname: {} (port)OP<port {} {}", mPortname, op, port2);

      mFile = new IOFile(op, port2);
    }

  }

  /* (port)OP fileWord */
  public IORedirect(Token t, String portstring, Word file) {
    mLogger.entry(t,portstring,file);
    mFirstToken = t;
    if(portstring.startsWith("(")) {
      mPortname = portstring.substring(0, portstring.indexOf(')') + 1);
      String op = portstring.substring(mPortname.length());
      mLogger.debug("mPortname: {} OP {}", mPortname, op);

      mFile = new IOFile(op, file);
    }
    else
      mFile = new IOFile(portstring, file);
  }

  // <port> op file
  public IORedirect(Token t, String portstring, String op, Word file) { 
    mLogger.entry(t,portstring,op,file);
    mFirstToken = t;

    mPortname = portstring;
    mFile = new IOFile(op, file);
  }

  public IORedirect(Token t, String portname, IOHere here) {
    mLogger.entry(t,portname,here);
    mFirstToken = t;
    mPortname = portname;
    mFile = null;
    mHere = here;
  }

  public void print(PrintWriter out) {

    if(mPortname != null) {
      out.print(mPortname);

    }

    if(mFile != null)
      mFile.print(out);
    if(mHere != null)
      mHere.print(out);

  }

  public void exec(Shell shell, SourceLocator loc) throws Exception {

    mLogger.entry(loc);
    String port = null;
    if(mPortname != null)
      port = mPortname.substring(
          mPortname.indexOf('(') + 1,
          mPortname.indexOf(')'));
    mLogger.trace("port",port);
    if(mFile != null){
      mFile.exec(shell, port, loc);
      mLogger.trace("to redirect to file. file{} port {} loc {}", mFile , port,loc);
    }
    if(mHere != null){
      mLogger.trace("to redirect to heredocc port: {}", port,loc);
      mHere.exec(shell, port);
    }
  }
}
//
//
// 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.
//