/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package org.apache.tools.ant.taskdefs.optional.ide;


import com.ibm.ivj.util.base.IvjException;
import com.ibm.ivj.util.base.ToolEnv;
import com.ibm.ivj.util.base.Workspace;
import org.apache.tools.ant.BuildException;

/**
 * Helper class for VAJ tasks. Holds Workspace singleton and
 * wraps IvjExceptions into BuildExceptions
 *
 * @author Wolf Siberski, TUI Infotec GmbH
 */
class VAJUtil {
    static private Workspace workspace;
        
    /**
     * Wraps IvjException into a BuildException
     *
     * @return org.apache.tools.ant.BuildException
     * @param errMsg Additional error message
     * @param e IvjException which is wrapped
     */
    public static BuildException createBuildException(
                                                      String errMsg, 
                                                      IvjException e) {
        errMsg = errMsg + "\n" + e.getMessage();
        String[] errors = e.getErrors();
        if (errors != null) {
            for (int i = 0; i < errors.length; i++) {
                errMsg = errMsg + "\n" + errors[i];
            }
        }
        return new BuildException(errMsg);
    }
        
    /**
     * Insert the method's description here.
     * Creation date: (19.09.2000 13:41:21)
     * @return com.ibm.ivj.util.base.Workspace
     */
    public static Workspace getWorkspace() {
        if (workspace == null) {
            workspace = ToolEnv.connectToWorkspace();
            if (workspace == null) {
                throw new BuildException(
                                         "Unable to connect to Workspace! "
                                         + "Make sure you are running in VisualAge for Java."); 
            }
        }

        return workspace;
    }
}