rrdtoolgraph.java

httptunnel.jar httptunnel java 源码

package net.jumperz.ext.org.jrobin.graph;

import net.jumperz.ext.org.jrobin.core.RrdException;

import java.awt.*;

/**
 * Created by IntelliJ IDEA.
 * User: cbld
 * Date: 25-mei-2004
 * Time: 21:02:56
 * To change this template use File | Settings | File Templates.
 */
public class RrdtoolGraph
{
	// ================================================================
	// -- Constants
	// ================================================================
	private static final int SAVE_PNG		= 0;
	private static final int SAVE_GIF		= 1;

	private static final int DS_DEF			= 0;
	private static final int DS_CDEF		= 1;

	private static final int TXT_COMMENT	= 0;
	private static final int TXT_GPRINT		= 1;

	private static final int GRAPH_LINE		= 0;
	private static final int GRAPH_AREA		= 1;
	private static final int GRAPH_STACK	= 2;

	private static final int TKN_IGNORE		= -2;
	private static final int TKN_UNKNOWN	= -1;
	private static final int TKN_RRDTOOL	= 0;
	private static final int TKN_GRAPH		= 1;
	private static final int TKN_START		= 2;
	private static final int TKN_END		= 3;
	private static final int TKN_COMMENT	= 4;
	private static final int TKN_LINE		= 5;
	private static final int TKN_AREA		= 6;
	private static final int TKN_STACK		= 7;
	private static final int TKN_CDEF		= 8;
	private static final int TKN_DEF		= 9;
	private static final int TKN_GPRINT		= 11;
	private static final int TKN_HRULE		= 12;
	private static final int TKN_VRULE		= 13;
	private static final int TKN_STEP		= 14;
	private static final int TKN_TITLE		= 15;
	private static final int TKN_NOLEGEND	= 16;
	private static final int TKN_COLOR		= 17;
	private static final int TKN_RIGID		= 18;
	private static final int TKN_LOWERLIMIT	= 19;
	private static final int TKN_UPPERLIMIT	= 20;
	private static final int TKN_LAZY		= 21;
	private static final int TKN_OVERLAY	= 23;
	private static final int TKN_BACKGROUND	= 24;
	private static final int TKN_IMGFORMAT	= 25;
	private static final int TKN_WIDTH		= 26;
	private static final int TKN_HEIGHT		= 27;
	private static final int TKN_VERT_LABEL	= 28;
	private static final int TKN_UNITS_EXP	= 29;
	private static final int TKN_NOMINOR	= 30;
	private static final int TKN_XGRID		= 31;
	private static final int TKN_YGRID		= 32;
	private static final int TKN_BASE		= 33;


	// ================================================================
	// -- Members
	// ================================================================
	private String token			= "";
	private String script 			= null;
	private RrdGraphDef graphDef	= null;

	private int tokenPos			= 0;
	private char[] parseCmd			= new char[0];

	private boolean gridRigid		= false;
	private double gridLower		= Double.MAX_VALUE;
	private double gridUpper		= Double.MIN_VALUE;

	private int width				= 0;
	private int height				= 0;
	private int fileType			= SAVE_PNG;
	private String fileName			= "";

	// ================================================================
	// -- Constructors
	// ================================================================
	public RrdtoolGraph( String script )
	{
		this.script		= script;
	}


	// ================================================================
	// -- Public methods
	// ================================================================
	public RrdGraphDef getRrdGraphDef() throws RrdException
	{
		parseRrdtoolScript();

		return graphDef;
	}


	// ================================================================
	// -- Private methods
	// ================================================================
	/**
	 *
	 * @return
	 * @throws RrdException
	 */
	private boolean parseRrdtoolScript() throws RrdException
	{
		long startTime	= 0, stopTime = 0;

		graphDef	= new RrdGraphDef();

		// First replace all special whitespace chars by a space
		parseCmd 	= script.replace( '\n', ' ' ).replace( '\r', ' ' ).replace( '\t', ' ' ).toCharArray();

		while ( nextToken() > 0 )
		{
			System.err.println( token );
			switch ( parseToken( token ) )
			{
				case TKN_RRDTOOL:					// We don't care about this token
					break;

				case TKN_GRAPH:						// Next token is the filename
					nextToken();
					break;

				case TKN_START:						// Next token is the start time
					nextToken();
					startTime	= Long.parseLong( token );
					break;

				case TKN_END:						// Next token is the end time
					nextToken();
					stopTime	= Long.parseLong( token );
					break;

				case TKN_NOMINOR:					// Hide the entire minor grid
					graphDef.setMinorGridX( false );
					graphDef.setMinorGridY( false );
					break;

				case TKN_WIDTH:						// Next token is graph pixel width
					nextToken();
					width		= Integer.parseInt( token );
					break;

				case TKN_HEIGHT:					// Next token is graph pixel height
					nextToken();
					height		= Integer.parseInt( token );
					break;

				case TKN_UNITS_EXP:					// Next token is the units exponent value
					nextToken();
					graphDef.setUnitsExponent( Integer.parseInt( token ) );
					break;

				case TKN_VERT_LABEL:				// Next token is the actual vertical label text
					nextToken();
					graphDef.setVerticalLabel( unescape(token) );
					break;

				case TKN_TITLE:						// Next token is the actual title text
					nextToken();
					graphDef.setTitle( unescape(token) );
					break;

				case TKN_IMGFORMAT:					// Next token is the file type
					nextToken();
					if ( token.equalsIgnoreCase("gif") )
						fileType = SAVE_GIF;
					break;

				case TKN_BACKGROUND:				// Next token is the filename of background image
					nextToken();
					graphDef.setBackground( unescape(token) );
					break;

				case TKN_OVERLAY:					// Next token is the filename of background image
					nextToken();
					graphDef.setOverlay( unescape(token) );
					break;

				case TKN_NOLEGEND:					// Hide the legend
					graphDef.setShowLegend( false );
					break;

				case TKN_LOWERLIMIT:				// Next token is the lower limit value
					nextToken();
					gridLower	= Double.parseDouble(token);
					break;

				case TKN_UPPERLIMIT:				// Next token is the upper limit value
					nextToken();
					gridUpper	= Double.parseDouble(token);
					break;

				case TKN_RIGID:						// Set rigid grid
					gridRigid 	= true;
					break;

				case TKN_BASE:						// Set base value
					nextToken();
					graphDef.setBaseValue( Double.parseDouble(token) );
					break;

				case TKN_COMMENT:
					parseTextCommand( TXT_COMMENT );
					break;

				case TKN_GPRINT:
					parseTextCommand( TXT_GPRINT );
					break;

				case TKN_LINE:
					parseGraphCommand( GRAPH_LINE );
					break;

				case TKN_AREA:
					parseGraphCommand( GRAPH_AREA );
					break;

				case TKN_STACK:
					parseGraphCommand( GRAPH_STACK );
					break;

				case TKN_DEF:
					parseDatasource( DS_DEF );
					break;

				case TKN_CDEF:
					parseDatasource( DS_CDEF );
					break;

				case TKN_IGNORE:					// Do nothing
					break;

				case TKN_UNKNOWN:
					throw new RrdException( "Unknown token: " + token );
			}
		}

		// Set grid range if necessary
		if ( gridRigid || ( gridLower == Double.MAX_VALUE ) || ( gridUpper == Double.MIN_VALUE ) )
			graphDef.setGridRange( gridLower, gridUpper, gridRigid );

		return true;
	}

	/**
	 *
	 * @param type
	 * @throws RrdException
	 */
	private void parseGraphCommand( int type ) throws RrdException
	{
		if ( type == GRAPH_LINE )
		{
			int w	= Integer.parseInt( "" + token.charAt( 4 ) );

			// Get the datasource
			int pos		= token.indexOf( '#', 6 );
			int npos	= token.indexOf( ':', 6 );
			if ( pos < 0 ) pos = npos;

			String ds		= ( pos > 0 ? token.substring( 6, pos ) : token.substring( 6 ) );
			Color color		= null;
			String legend	= null;

			// Get the color
			if ( pos > 0 && token.charAt(pos) == '#' )
				color	= Color.decode(  npos > 0 ? token.substring( pos, npos ) : token.substring( pos ) );

			// Get the legend (if there is one)
			if ( npos > 0 )
				legend	= unescape( token.substring( npos + 1 ) );