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diff --git a/src/main/java/org/pdfbox/util/operator/SetTextFont.java b/src/main/java/org/pdfbox/util/operator/SetTextFont.java
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+++ b/src/main/java/org/pdfbox/util/operator/SetTextFont.java
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+/**
+ * Copyright (c) 2004, 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.operator;
+
+import java.util.List;
+import org.apache.log4j.Logger;
+import org.pdfbox.cos.COSName;
+import org.pdfbox.cos.COSNumber;
+import org.pdfbox.pdmodel.font.PDFont;
+import org.pdfbox.util.PDFOperator;
+
+import java.io.IOException;
+
+/**
+ * <p>Titre : PDFEngine Modification.</p>
+ * <p>Description : Structal modification of the PDFEngine class :
+ * the long sequence of conditions in processOperator is remplaced by
+ * this strategy pattern</p>
+ * <p>Copyright : Copyright (c) 2004</p>
+ * <p>Société : DBGS</p>
+ * @author Huault : huault@free.fr
+ * @version $Revision: 1.4 $
+ */
+
+public class SetTextFont extends OperatorProcessor 
+{
+    private static final Logger LOG = Logger.getLogger(SetTextFont.class);
+
+    /**
+     * Tf selectfont Set text font and size.
+     * @param operator The operator that is being executed.
+     * @param arguments List
+     * @throws IOException If an error occurs while processing the font.
+     */
+    public void process(PDFOperator operator, List arguments) throws IOException
+    {
+        //there are some documents that are incorrectly structured and 
+        //arguments are in the wrong spot, so we will silently ignore them
+        //if there are no arguments
+        if( arguments.size() >= 2 )
+        {
+            //set font and size
+            COSName fontName = (COSName)arguments.get( 0 );
+            float fontSize = ((COSNumber)arguments.get( 1 ) ).floatValue();
+            context.getGraphicsState().getTextState().setFontSize( fontSize );
+    
+            if (LOG.isDebugEnabled())
+            {
+                LOG.debug("<Tf font=\"" + fontName.getName() + "\" size=\"" +
+                          context.getGraphicsState().getTextState().getFontSize() + "\">");
+            }
+    
+            //old way
+            //graphicsState.getTextState().getFont() = (COSObject)stream.getDictionaryObject( fontName );
+            //if( graphicsState.getTextState().getFont() == null )
+            //{
+            //    graphicsState.getTextState().getFont() = (COSObject)graphicsState.getTextState().getFont()
+            //                                           Dictionary.getItem( fontName );
+            //}
+            context.getGraphicsState().getTextState().setFont( (PDFont)context.getFonts().get( fontName.getName() ) );
+            if( context.getGraphicsState().getTextState().getFont() == null )
+            {
+                throw new IOException( "Error: Could not find font(" + fontName + ") in map=" + context.getFonts() );
+            }
+        }
+    }
+
+}