source: other-projects/trunk/realistic-books/packages/AntInstaller/src/org/tp23/antinstaller/runtime/exe/CreateLoggerFilter.java@ 19253

/* 
 * Copyright 2005 Paul Hinds
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.tp23.antinstaller.runtime.exe;

import java.io.File;

import org.tp23.antinstaller.InstallerContext;
import org.tp23.antinstaller.runtime.SimpleLogger;


/**
 * Creates a suitable logger for the install.  The logging does not
 * throw exceptions since it is mainly for debug and we dont want to 
 * stop an install just because logging is not working
 * @author Paul Hinds
 * @version $Id: CreateLoggerFilter.java,v 1.3 2007/01/09 22:41:40 teknopaul Exp $
 */
public class CreateLoggerFilter implements ExecuteFilter {

    public static final String LOG_FILE_NAME = "ant.install.log";
    
    /**
     */
    public void exec(InstallerContext ctx){
        SimpleLogger logger = new SimpleLogger();
        ctx.setLogger( logger );
        try {
            String defaultName = "./ant.install.log";
            // @since 0.7.1 RFE-1154368 for installs from CD where ./ is not writable
            File defaultFile = new File(defaultName);
            try {
                if( !defaultFile.exists() ){
                    defaultFile.createNewFile();
                }
            }
            catch(Exception e) {
                ;// ignore canWrite() will return false
            }
            if(defaultFile.canWrite()) {
                logger.setFileName(defaultName);
            }
            else {
                String tempDir = ctx.getFileRoot().getAbsolutePath();
                logger.setFileName(tempDir+System.getProperty("file.separator") + LOG_FILE_NAME);
            }
            ctx.log("Ant basedir:" + ctx.getFileRoot().getCanonicalPath());
        }
        catch (Throwable ex1) {
            ex1.printStackTrace();
            logger.close();
            // swallow exceptions
        }
    }

}