Logging.java

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

package org.xmlsh.sh.shell;

import java.io.File;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.config.ConfigurationFactory;
import org.apache.logging.log4j.core.config.LoggerConfig;

class Logging {

  static {

    String log4jpath = Shell.getSystemProperty(ShellConstants.XLOG4JPATH);

    if(log4jpath != null) {
      File f = new File(log4jpath);
      if(f.isFile() && f.canRead()) {
        System.setProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY,
            log4jpath);
      }
    }

    // XLOGFILE and HOME are handled by the log4j config itself

  }

  static void configureLogger(boolean bDisabled) {
    // Only configure logger if it has not already been configured
    // This avoids adding appenders to embedded invocations of xmlsh
    if(bDisabled)
      disableLogging();

  }

  public static void disableLogging() {
    @SuppressWarnings("unchecked")
    org.apache.logging.log4j.core.LoggerContext ctx = (org.apache.logging.log4j.core.LoggerContext) LogManager
        .getContext(false);
    Configuration conf = ctx.getConfiguration();
    for(LoggerConfig logger : conf.getLoggers().values()) {
      if(logger.getName().startsWith("xmlsh"))
        logger.setLevel(Level.OFF);
    }

  }

}