/**
 * $Id: IfClause.java 209 2009-04-11 16:32:13Z daldei $
 * $Date: 2009-04-11 12:32:13 -0400 (Sat, 11 Apr 2009) $
 *
 */

package org.xmlsh.sh.core;

import java.io.PrintWriter;
import org.xmlsh.core.ExitOnErrorException;
import org.xmlsh.core.ThrowException;
import org.xmlsh.core.XValue;
import org.xmlsh.sh.shell.Shell;

public class TryCatchFinally extends CompoundCommandExpr {
  private CommandExpr mTryPart;
  private String mCatchVar;
  private CommandExpr mCatchPart;
  private CommandExpr mFinallyPart;

  public TryCatchFinally(CommandExpr tryPart, String catchVar,
      CommandExpr catchPart, CommandExpr finallyPart) {
    super();
    mTryPart = tryPart;
    mCatchVar = catchVar;
    mCatchPart = catchPart;
    mFinallyPart = finallyPart;
    setLocation(tryPart);
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.xmlsh.sh.core.Command#print(java.io.PrintWriter)
   */
  @Override
  public void print(PrintWriter out, boolean bExec) {
    out.print("try ");
    mTryPart.print(out, bExec);

    out.print("catch ");

    out.println(mCatchVar);

    mCatchPart.print(out, bExec);

    if(mFinallyPart != null) {
      out.println("finally");
      mFinallyPart.print(out, bExec);
    }
    out.println("fi");

  }

  @Override
  public int exec(Shell shell) throws Exception {
    shell.getEnv().saveIO();
    try {
      applyRedirect(shell);

      int ret = 0;
      try {
        ret = shell.exec(mTryPart);
      } catch (ThrowException e) {
        shell.getEnv().setVar(mCatchVar, e.getValue());

        ret = shell.exec(mCatchPart);

      } catch (ExitOnErrorException e) {
        shell.getEnv().setVar(mCatchVar, XValue.newXValue(e.getValue()));

        ret = shell.exec(mCatchPart);

      }

      finally {

        if(shell.keepRunning() && mFinallyPart != null)
          ret = shell.exec(mFinallyPart);
      }

      return ret;
    } finally {
      shell.getEnv().restoreIO();
    }
  }
}

//
//
// 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.
//