From c68ad0ec056b37c82debebcecfcde1866d61b4d9 Mon Sep 17 00:00:00 2001
From: tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Tue, 25 Nov 2008 12:03:13 +0000
Subject: Removing pdfbox from source.

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@301 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 src/main/java/org/pdfbox/util/PDFStreamEngine.java | 622 ---------------------
 1 file changed, 622 deletions(-)
 delete mode 100644 src/main/java/org/pdfbox/util/PDFStreamEngine.java

(limited to 'src/main/java/org/pdfbox/util/PDFStreamEngine.java')

diff --git a/src/main/java/org/pdfbox/util/PDFStreamEngine.java b/src/main/java/org/pdfbox/util/PDFStreamEngine.java
deleted file mode 100644
index 1e05f8a..0000000
--- a/src/main/java/org/pdfbox/util/PDFStreamEngine.java
+++ /dev/null
@@ -1,622 +0,0 @@
-/**
- * Copyright (c) 2003-2005, www.pdfbox.org
- * 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. Neither the name of pdfbox; nor the names of its
- *    contributors may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS 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 REGENTS OR 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.
- *
- * http://www.pdfbox.org
- *
- */
-package org.pdfbox.util;
-
-import java.io.IOException;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Properties;
-import java.util.Stack;
-
-import org.pdfbox.cos.COSObject;
-import org.pdfbox.cos.COSStream;
-import org.pdfbox.exceptions.WrappedIOException;
-
-import org.pdfbox.pdmodel.PDPage;
-import org.pdfbox.pdmodel.PDResources;
-
-import org.pdfbox.pdmodel.font.PDFont;
-
-import org.pdfbox.pdmodel.graphics.PDGraphicsState;
-
-import org.pdfbox.util.operator.OperatorProcessor;
-
-import org.apache.log4j.Logger;
-
-/**
- * This class will run through a PDF content stream and execute certain operations
- * and provide a callback interface for clients that want to do things with the stream.
- * See the PDFTextStripper class for an example of how to use this class.
- *
- * @author Ben Litchfield (ben@benlitchfield.com)
- * @version $Revision: 1.29 $
- */
-public class PDFStreamEngine
-{
-  private static Logger log = Logger.getLogger(PDFStreamEngine.class);
-
-    static protected final byte[] SPACE_BYTES = { (byte)32 };
-
-    private PDGraphicsState graphicsState = null;
-
-    protected Matrix textMatrix = null;
-    protected Matrix textLineMatrix = null;
-    protected Stack graphicsStack = new Stack();
-    //private PDResources resources = null;
-    
-    protected Map operators = new HashMap();
-    
-    protected Map fontToAverageWidths = new HashMap();
-    
-    protected Stack streamResourcesStack = new Stack();
-    
-    protected PDPage page;
-    
-    /**
-     * This is a simple internal class used by the Stream engine to handle the 
-     * resources stack.
-     */
-    protected static class StreamResources
-    {
-      protected Map fonts;
-      protected Map colorSpaces;
-      protected Map xobjects;
-      protected Map graphicsStates;
-      protected PDResources resources;
-    }
-
-    /**
-     * Constructor.
-     */
-    public PDFStreamEngine()
-    {
-        //default constructor
-    }
-    
-    /**
-     * Constructor with engine properties.  The property keys are all
-     * PDF operators, the values are class names used to execute those
-     * operators.
-     * 
-     * @param properties The engine properties.
-     * 
-     * @throws IOException If there is an error setting the engine properties.
-     */
-    public PDFStreamEngine( Properties properties ) throws IOException
-    {
-        try
-        {
-            Iterator keys = properties.keySet().iterator();
-            while( keys.hasNext() )
-            {
-                String operator = (String)keys.next();
-                String operatorClass = properties.getProperty( operator );
-                if( log.isDebugEnabled() )
-                {
-                    log.debug( "Operator Class: " + operator + "=" + operatorClass );
-                }
-                OperatorProcessor op = (OperatorProcessor)Class.forName( operatorClass ).newInstance();
-                op.setContext( this );
-                operators.put( operator, op );
-            }
-        }
-        catch( Exception e )
-        {
-            throw new WrappedIOException( e );
-        }
-    }
-
-    /**
-     * This will process the contents of the stream.
-     *
-     * @param aPage The page.
-     * @param resources The location to retrieve resources.
-     * @param cosStream the Stream to execute.
-     * 
-     *
-     * @throws IOException if there is an error accessing the stream.
-     */
-    public void processStream( PDPage aPage, PDResources resources, COSStream cosStream ) throws IOException
-    {
-        graphicsState = new PDGraphicsState();
-        textMatrix = null;
-        textLineMatrix = null;
-        graphicsStack.clear();
-        streamResourcesStack.clear();
-        fontToAverageWidths.clear();
-        
-        processSubStream( aPage, resources, cosStream );
-    }
-    
-    /**
-     * Process a sub stream of the current stream.
-     * 
-     * @param aPage The page used for drawing.
-     * @param resources The resources used when processing the stream.
-     * @param cosStream The stream to process.
-     * 
-     * @throws IOException If there is an exception while processing the stream.
-     */
-    public void processSubStream( PDPage aPage, PDResources resources, COSStream cosStream ) throws IOException
-    {
-        page = aPage;
-        if( resources != null )
-        {
-            StreamResources sr = new StreamResources();
-            sr.fonts = resources.getFonts();
-            sr.colorSpaces = resources.getColorSpaces();
-            sr.xobjects = resources.getXObjects();
-            sr.graphicsStates = resources.getGraphicsStates();
-            sr.resources = resources;
-            streamResourcesStack.push(sr);
-        }
-        try
-        {
-            List arguments = new ArrayList();
-            long startTokens = System.currentTimeMillis();
-            List tokens = cosStream.getStreamTokens();
-            long stopTokens = System.currentTimeMillis();
-            if( log.isDebugEnabled() )
-            {
-                log.debug( "Getting tokens time=" + (stopTokens-startTokens) );
-            }
-            if( tokens != null )
-            {
-                Iterator iter = tokens.iterator();
-                while( iter.hasNext() )
-                {
-                    Object next = iter.next();
-                    if( next instanceof COSObject )
-                    {
-                        arguments.add( ((COSObject)next).getObject() );
-                    }
-                    else if( next instanceof PDFOperator )
-                    {
-                        processOperator( (PDFOperator)next, arguments );
-                        arguments = new ArrayList();
-                    }
-                    else
-                    {
-                        arguments.add( next );
-                    }
-                }
-            }
-        }
-        finally
-        {
-            if( resources != null )
-            {
-                streamResourcesStack.pop();
-            }
-        }
-        
-    }
-
-    /**
-     * A method provided as an event interface to allow a subclass to perform
-     * some specific functionality when a character needs to be displayed.
-     *
-     * @param text The character to be displayed.
-     */
-    protected void showCharacter( TextPosition text )
-    {
-        //subclasses can override to provide specific functionality.
-    }
-
-    /**
-     * You should override this method if you want to perform an action when a
-     * string is being shown.
-     *
-     * @param string The string to display.
-     *
-     * @throws IOException If there is an error showing the string
-     */
-    public void showString( byte[] string ) throws IOException
-    {
-        float spaceWidth = 0;
-        float spacing = 0;
-        StringBuffer stringResult = new StringBuffer(string.length);
-        
-        float characterDisplacement = 0;
-        float spaceDisplacement = 0;
-        float fontSize = graphicsState.getTextState().getFontSize();
-        float horizontalScaling = graphicsState.getTextState().getHorizontalScalingPercent()/100f;
-        float rise = graphicsState.getTextState().getRise();
-        final float wordSpacing = graphicsState.getTextState().getWordSpacing();
-        final float characterSpacing = graphicsState.getTextState().getCharacterSpacing();
-        float wordSpacingDisplacement = 0;
-        
-        PDFont font = graphicsState.getTextState().getFont();
-        
-        //This will typically be 1000 but in the case of a type3 font
-        //this might be a different number
-        float glyphSpaceToTextSpaceFactor = 1f/font.getFontMatrix().getValue( 0, 0 );
-        Float averageWidth = (Float)fontToAverageWidths.get( font );
-        if( averageWidth == null )
-        {
-            averageWidth = new Float( font.getAverageFontWidth() );
-            fontToAverageWidths.put( font, averageWidth );
-        }
-
-        Matrix initialMatrix = new Matrix();
-        initialMatrix.setValue(0,0,1);
-        initialMatrix.setValue(0,1,0);
-        initialMatrix.setValue(0,2,0);
-        initialMatrix.setValue(1,0,0);
-        initialMatrix.setValue(1,1,1);
-        initialMatrix.setValue(1,2,0);
-        initialMatrix.setValue(2,0,0);
-        initialMatrix.setValue(2,1,rise);
-        initialMatrix.setValue(2,2,1);
-
-
-        //this
-        int codeLength = 1;
-        Matrix ctm = graphicsState.getCurrentTransformationMatrix();
-        
-        //lets see what the space displacement should be
-        spaceDisplacement = (font.getFontWidth( SPACE_BYTES, 0, 1 )/glyphSpaceToTextSpaceFactor);
-        if( spaceDisplacement == 0 )
-        {
-            spaceDisplacement = (averageWidth.floatValue()/glyphSpaceToTextSpaceFactor);
-            //The average space width appears to be higher than necessary
-            //so lets make it a little bit smaller.
-            spaceDisplacement *= .80f;
-            if( log.isDebugEnabled() )
-            {
-                log.debug( "Font: Space From Average=" + spaceDisplacement );
-            }
-        }
-        int pageRotation = page.findRotation();
-        Matrix trm = initialMatrix.multiply( textMatrix ).multiply( ctm );
-        float x = trm.getValue(2,0);
-        float y = trm.getValue(2,1);
-        if( pageRotation == 0 )
-        {
-            trm.setValue( 2,1, -y + page.findMediaBox().getHeight() );
-        }
-        else if( pageRotation == 90 )
-        {
-            trm.setValue( 2,0, y );
-            trm.setValue( 2,1, x );
-        }
-        else if( pageRotation == 270 )
-        {
-            trm.setValue( 2,0, -y  + page.findMediaBox().getHeight() );
-            trm.setValue( 2,1, x );
-        }
-        for( int i=0; i<string.length; i+=codeLength )
-        {
-            if( log.isDebugEnabled() )
-            {
-                log.debug( "initialMatrix=" + initialMatrix );
-                log.debug( "textMatrix=" + textMatrix );
-                log.debug( "initialMatrix.multiply( textMatrix )=" + initialMatrix.multiply( textMatrix ) );
-                log.debug( "ctm=" + ctm );
-                log.debug( "trm=" + initialMatrix.multiply( textMatrix ).multiply( ctm ) );
-            }
-            codeLength = 1;
-
-            String c = font.encode( string, i, codeLength );
-
-            if( log.isDebugEnabled() )
-            {
-                log.debug( "Character Code=" + string[i] + "='" + c + "'" );
-            }
-            if( c == null && i+1<string.length)
-            {
-                //maybe a multibyte encoding
-                codeLength++;
-                if( log.isDebugEnabled() )
-                {
-                    log.debug( "Multibyte Character Code=" + string[i] + string[i+1] );
-                }
-                c = font.encode( string, i, codeLength );
-            }
-            stringResult.append( c );
-
-            //todo, handle horizontal displacement
-            characterDisplacement += (font.getFontWidth( string, i, codeLength )/glyphSpaceToTextSpaceFactor);
-
-
-            // PDF Spec - 5.5.2 Word Spacing
-            //
-            // Word spacing works the same was as character spacing, but applies
-            // only to the space character, code 32.
-            //
-            // Note: Word spacing is applied to every occurrence of the single-byte
-            // character code 32 in a string.  This can occur when using a simple
-            // font or a composite font that defines code 32 as a single-byte code.
-            // It does not apply to occurrences of the byte value 32 in multiple-byte
-            // codes.
-            //
-            // RDD - My interpretation of this is that only character code 32's that
-            // encode to spaces should have word spacing applied.  Cases have been
-            // observed where a font has a space character with a character code
-            // other than 32, and where word spacing (Tw) was used.  In these cases,
-            // applying word spacing to either the non-32 space or to the character
-            // code 32 non-space resulted in errors consistent with this interpretation.
-            //
-            
-            boolean withCS = false;
-            if( (string[i] == 0x20) && c.equals( " " ) )
-            {
-                spacing += wordSpacing + characterSpacing;
-                withCS = true;
-            }
-            else
-            {
-                spacing += characterSpacing;
-            }
-
-            if( log.isDebugEnabled() )
-            {
-                log.debug( "Checking code '" + c + "' font=" + graphicsState.getTextState().getFont() +
-                     " Tc=" + characterSpacing +
-                     " Tw=" + wordSpacing +
-                     " fontSize=" + fontSize +
-                     " horizontalScaling=" + horizontalScaling +
-                     " totalDisp=" + characterDisplacement +  
-                     " spacing=" + spacing + "(" + withCS + ")" );
-            }
-            // We want to update the textMatrix using the width, in text space units.
-            //
-            
-        }
-        
-        //The adjustment will always be zero.  The adjustment as shown in the
-        //TJ operator will be handled separately.
-        float adjustment=0;
-        //todo, need to compute the horizontal displacement
-        float ty = 0;
-        float tx = ((characterDisplacement-adjustment/glyphSpaceToTextSpaceFactor)*fontSize + spacing)
-                   *horizontalScaling;
-        
-        if( log.isDebugEnabled() )
-        {
-            log.debug( "disp=" + characterDisplacement + " adj=" + adjustment +
-                       " fSize=" + fontSize + " tx=" + tx );
-        }
-        
-        float xScale = trm.getXScale();
-        float yScale = trm.getYScale(); 
-        float xPos = trm.getXPosition();
-        float yPos = trm.getYPosition();
-        spaceWidth = spaceDisplacement * xScale * fontSize;
-        wordSpacingDisplacement = wordSpacing*xScale * fontSize;
-        Matrix td = new Matrix();
-        td.setValue( 2, 0, tx );
-        td.setValue( 2, 1, ty );            
-        
-        if( log.isDebugEnabled() )
-        {
-            log.debug( "TRM=" + trm );
-            log.debug( "TextMatrix before " + textMatrix );
-        }
-        float xPosBefore = textMatrix.getXPosition();
-        float yPosBefore = textMatrix.getYPosition();
-        textMatrix = td.multiply( textMatrix );
-        if( log.isDebugEnabled() )
-        {
-            log.debug( "TextMatrix after " + textMatrix );
-        }
-        float totalStringDisplacement = 0;
-        if( pageRotation == 0 )
-        {
-            totalStringDisplacement = (textMatrix.getXPosition() - xPosBefore);
-        }
-        else if( pageRotation == 90 )
-        {
-            totalStringDisplacement = (textMatrix.getYPosition() - yPosBefore);
-        }
-        else if( pageRotation == 270 )
-        {
-            totalStringDisplacement = (yPosBefore - textMatrix.getYPosition());
-        }
-        showCharacter(
-                new TextPosition(
-                    xPos,
-                    yPos,
-                    xScale,
-                    yScale,
-                    totalStringDisplacement,
-                    spaceWidth,
-                    stringResult.toString(),
-                    graphicsState.getTextState().getFont(),
-                    graphicsState.getTextState().getFontSize(),
-                    wordSpacingDisplacement ));
-    }
-    
-    /**
-     * This is used to handle an operation.
-     *
-     * @param operation The operation to perform.
-     * @param arguments The list of arguments.
-     *
-     * @throws IOException If there is an error processing the operation.
-     */
-    public void processOperator( String operation, List arguments ) throws IOException
-    {
-        PDFOperator oper = PDFOperator.getOperator( operation );
-        processOperator( oper, arguments );
-    }
-
-    /**
-     * This is used to handle an operation.
-     *
-     * @param operator The operation to perform.
-     * @param arguments The list of arguments.
-     *
-     * @throws IOException If there is an error processing the operation.
-     */
-    protected void processOperator( PDFOperator operator, List arguments ) throws IOException
-    {
-        String operation = operator.getOperation();
-        if( log.isDebugEnabled() )
-        {
-            log.debug( "processOperator( '" + operation + "' )" );
-        }
-        OperatorProcessor processor = (OperatorProcessor)operators.get( operation );
-        if( processor != null )
-        {
-            processor.process( operator, arguments );
-        }
-    } 
-   
-    /**
-     * @return Returns the colorSpaces.
-     */
-    public Map getColorSpaces() 
-    {
-        return ((StreamResources) streamResourcesStack.peek()).colorSpaces;
-    }
-    
-    /**
-     * @return Returns the colorSpaces.
-     */
-    public Map getXObjects() 
-    {
-        return ((StreamResources) streamResourcesStack.peek()).xobjects;
-    }
-    
-    /**
-     * @param value The colorSpaces to set.
-     */
-    public void setColorSpaces(Map value) 
-    {
-        ((StreamResources) streamResourcesStack.peek()).colorSpaces = value;
-    }
-    /**
-     * @return Returns the fonts.
-     */
-    public Map getFonts() 
-    {
-        return ((StreamResources) streamResourcesStack.peek()).fonts;
-    }
-    /**
-     * @param value The fonts to set.
-     */
-    public void setFonts(Map value) 
-    {
-        ((StreamResources) streamResourcesStack.peek()).fonts = value;
-    }
-    /**
-     * @return Returns the graphicsStack.
-     */
-    public Stack getGraphicsStack() 
-    {
-        return graphicsStack;
-    }
-    /**
-     * @param value The graphicsStack to set.
-     */
-    public void setGraphicsStack(Stack value) 
-    {
-        graphicsStack = value;
-    }
-    /**
-     * @return Returns the graphicsState.
-     */
-    public PDGraphicsState getGraphicsState() 
-    {
-        return graphicsState;
-    }
-    /**
-     * @param value The graphicsState to set.
-     */
-    public void setGraphicsState(PDGraphicsState value) 
-    {
-        graphicsState = value;
-    }
-    /**
-     * @return Returns the graphicsStates.
-     */
-    public Map getGraphicsStates() 
-    {
-        return ((StreamResources) streamResourcesStack.peek()).graphicsStates;
-    }
-    /**
-     * @param value The graphicsStates to set.
-     */
-    public void setGraphicsStates(Map value) 
-    {
-        ((StreamResources) streamResourcesStack.peek()).graphicsStates = value;
-    }
-    /**
-     * @return Returns the textLineMatrix.
-     */
-    public Matrix getTextLineMatrix() 
-    {
-        return textLineMatrix;
-    }
-    /**
-     * @param value The textLineMatrix to set.
-     */
-    public void setTextLineMatrix(Matrix value) 
-    {
-        textLineMatrix = value;
-    }
-    /**
-     * @return Returns the textMatrix.
-     */
-    public Matrix getTextMatrix() 
-    {
-        return textMatrix;
-    }
-    /**
-     * @param value The textMatrix to set.
-     */
-    public void setTextMatrix(Matrix value) 
-    {
-        textMatrix = value;
-    }
-    /**
-     * @return Returns the resources.
-     */
-    public PDResources getResources()
-    {
-        return ((StreamResources) streamResourcesStack.peek()).resources;
-    }
-    
-    /**
-     * Get the current page that is being processed.
-     * 
-     * @return The page being processed.
-     */
-    public PDPage getCurrentPage()
-    {
-        return page;
-    }
-}
\ No newline at end of file
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