home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code


package com.ice.syslogd;

import com.ice.syslog.SyslogDefs;
import com.ice.util.StringUtilities;

import java.lang.*;
import java.text.*;
import java.util.*;


/**
 * The ConfigFormat class implements the code necessary
 * to format and parse syslog configuration entries.
 *
 * @version $Revision: 1.1.1.1 $
 * @author Timothy Gerard Endres,
 *   <a href="mailto:time@ice.com">time@ice.com.
 * @see SyslogServer
 */

public class
ConfigFormat extends Format
	{																
	public static final String		RCS_ID = "$Id: ConfigFormat.java,v 1.1.1.1 1998/02/22 05:47:54 time Exp $";
	public static final String		RCS_REV = "$Revision: 1.1.1.1 $";
	public static final String		RCS_NAME = "$Name:  $";

	static public final char		configSeparator = '.';
	static public final String		paramSeparator = " \t";
	static public final String		facilitySeparator = ",";


    static public final ConfigFormat
	getInstance()
		{
		return new ConfigFormat();
		}

	public
	ConfigFormat()
		{
		super();
		}

	public String
	format( ConfigEntry entry )
		throws IllegalArgumentException
		{
		StringBuffer result =
			new StringBuffer();

		result.append
			( "UNIMPLEMENTED: ConfigFormat.format( ConfigEntry )" );

		return result.toString();
		}

	public StringBuffer
	format( Object entry, StringBuffer appendTo, FieldPosition fieldPos )
		throws IllegalArgumentException
		{
		// UNDONE - handle fieldPos!
		String tmpFormat = this.format( (ConfigEntry)entry );
		appendTo.append( tmpFormat );
		return appendTo;
		}

	public ConfigEntry
	parse( String source )
		throws ParseException
		{
		return this.parseEntry( source );
		}

	public Object
	parseObject( String source, ParsePosition pos )
		{
		ConfigEntry entry = null;

		try {
			entry = this.parseEntry( source );
			}
		catch ( ParseException ex )
			{
			entry = null;
			}

		return (Object) entry;
		}

	// UNDONE - all the positions in ParseExceptions are zero.

	public ConfigEntry
	parseEntry( String source )  
		throws ParseException
		{
		String			entryStr = source;
		String			facilityStr = null;
		String			priorityStr = null;
		String			actionStr = null;
		String			matchStr = null;
		String			parameterStr = null;
		String[]		params = null;
		int				index, tabIdx, slashIdx;
		int				facility, priority;
		int				tokeCount;
		StringTokenizer	toker;

		boolean hasMatch = false;

		index = entryStr.indexOf( ConfigFormat.configSeparator );
		if ( index < 0 )
			{
			throw new ParseException
				( "configuration entry has no facility field", 0 );
			}

		facilityStr = entryStr.substring( 0, index );
		entryStr = entryStr.substring( index + 1 );

		index = entryStr.indexOf( ConfigFormat.configSeparator );
		if ( index < 0 )
			{
			throw new ParseException
				( "configuration entry has no priority field", 0 );
			}

		priorityStr = entryStr.substring( 0, index );
		entryStr = entryStr.substring( index + 1 );

		index = entryStr.indexOf( ' ' );
		tabIdx = entryStr.indexOf( '\t' );
		slashIdx = entryStr.indexOf( '/' );

		if ( slashIdx > 0
				&& ( index < 0 || slashIdx < index )
				&& ( tabIdx < 0 || slashIdx < tabIdx ) )
			{
			// We have a regeular expression to match...
			actionStr = entryStr.substring( 0, slashIdx );
			entryStr = entryStr.substring( slashIdx + 1 );
			slashIdx = entryStr.indexOf( '/' );
			if ( slashIdx < 0 )
				{
				throw new ParseException
					( "configuration entry has bad match expression", 0 );
				}
			else
				{
				hasMatch = true;
				matchStr = entryStr.substring( 0, slashIdx );
				if ( (slashIdx + 1) < entryStr.length() )
					parameterStr = entryStr.substring( slashIdx + 1 );
				else
					parameterStr = null;
				}
			}
		else if ( index < 0 && tabIdx < 0 )
			{
			actionStr = entryStr;
			parameterStr = null;
			}
		else
			{
			if ( tabIdx >= 0 && tabIdx < index )
				index = tabIdx;
			actionStr = entryStr.substring( 0, index );
			parameterStr = entryStr.substring( index + 1 );
			}

		if ( parameterStr != null )
			{
			params =
				com.ice.util.StringUtilities.parseArgumentString
					( parameterStr );
			}

		ConfigEntry result = new ConfigEntry();

		SyslogAction action =
			new SyslogAction( actionStr, params );

		result.setAction( action );

		if ( hasMatch )
			{
			result.setMatchExpr( matchStr );
			}

		if ( priorityStr.equals( "*" ) )
			{
			priority = SyslogDefs.LOG_ALL;
			}
		else
			{
			priority = SyslogDefs.getPriority( priorityStr );
			}

		for ( int i = 0 ; i < SyslogDefs.LOG_NFACILITIES ; ++i )
			{
			result.setFacilityLevel( i, -1 ); // UNDONE !!!
			}

		if ( facilityStr.equals( "*" ) )
			{
			for ( int i = 0 ; i < SyslogDefs.LOG_NFACILITIES ; ++i )
				{
				result.setFacilityLevel( i, priority );
				}
			}
		else
			{
			toker = new StringTokenizer
						( facilityStr, ConfigFormat.facilitySeparator );

			tokeCount = toker.countTokens();

			if ( tokeCount > 0 )
				{
				for ( int pIdx = 0 ; pIdx < tokeCount ; ++pIdx )
					{
					String facilityName = null;

					try { facilityName = toker.nextToken(); }
						catch ( NoSuchElementException ex )
							{ break; }

					facility = SyslogDefs.getFacility( facilityName );

					result.setFacilityLevel( facility, priority );
					}
				}
			}

		return result;
		}

	}



my book on functional programming

 

new blog posts

 

Copyright 1998-2019 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.