From 6025b6016517c6d898d8957d1d7e03ba71431912 Mon Sep 17 00:00:00 2001
From: tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Fri, 1 Dec 2006 12:20:24 +0000
Subject: Initial import of release 2.2.

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../org/pdfbox/pdfwriter/ContentStreamWriter.java  | 200 +++++++++++++++++++++
 1 file changed, 200 insertions(+)
 create mode 100644 src/main/java/org/pdfbox/pdfwriter/ContentStreamWriter.java

(limited to 'src/main/java/org/pdfbox/pdfwriter/ContentStreamWriter.java')

diff --git a/src/main/java/org/pdfbox/pdfwriter/ContentStreamWriter.java b/src/main/java/org/pdfbox/pdfwriter/ContentStreamWriter.java
new file mode 100644
index 0000000..97b41b1
--- /dev/null
+++ b/src/main/java/org/pdfbox/pdfwriter/ContentStreamWriter.java
@@ -0,0 +1,200 @@
+/**
+ * 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.pdfwriter;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+import java.util.Iterator;
+import java.util.List;
+
+import org.pdfbox.cos.COSArray;
+import org.pdfbox.cos.COSBase;
+import org.pdfbox.cos.COSBoolean;
+import org.pdfbox.cos.COSDictionary;
+import org.pdfbox.cos.COSFloat;
+import org.pdfbox.cos.COSInteger;
+import org.pdfbox.cos.COSName;
+import org.pdfbox.cos.COSString;
+
+import org.pdfbox.util.ImageParameters;
+import org.pdfbox.util.PDFOperator;
+
+/**
+ * A class that will take a list of tokens and write out a stream with them.
+ * 
+ * @author Ben Litchfield (ben@benlitchfield.com)
+ * @version $Revision: 1.7 $
+ */
+public class ContentStreamWriter
+{
+    private OutputStream output;
+    /**
+     * space character.
+     */
+    public static final byte[] SPACE = new byte[] { 32 };
+    
+    /**
+     * standard line separator on this platform.
+     */
+    public static final byte[] EOL = System.getProperty("line.separator").getBytes();
+    
+    /**
+     * This will create a new content stream writer.
+     * 
+     * @param out The stream to write the data to. 
+     */
+    public ContentStreamWriter( OutputStream out )
+    {
+        output = out;
+    }
+    
+    /**
+     * This will write out the list of tokens to the stream.
+     *  
+     * @param tokens The tokens to write to the stream.
+     * @param start The start index into the list of tokens.
+     * @param end The end index into the list of tokens.
+     * @throws IOException If there is an error writing to the stream.
+     */
+    public void writeTokens( List tokens, int start, int end ) throws IOException
+    {
+        for( int i=start; i<end; i++ )
+        {
+            Object o = tokens.get( i );
+            writeObject( o );
+            //write a space between each object.
+            output.write( 32 );
+        }
+        output.flush();
+    }
+    
+    private void writeObject( Object o ) throws IOException
+    {
+        if( o instanceof COSString )
+        {
+            ((COSString)o).writePDF( output );
+        }
+        else if( o instanceof COSFloat )
+        {
+            ((COSFloat)o).writePDF( output );
+        }
+        else if( o instanceof COSInteger )
+        {
+            ((COSInteger)o).writePDF( output );
+        }
+        else if( o instanceof COSBoolean )
+        {
+            ((COSBoolean)o).writePDF( output );
+        }
+        else if( o instanceof COSName )
+        {
+            ((COSName)o).writePDF( output );
+        }
+        else if( o instanceof COSArray )
+        {
+            COSArray array = (COSArray)o;
+            output.write(COSWriter.ARRAY_OPEN);
+            for( int i=0; i<array.size(); i++ )
+            {
+                writeObject( array.get( i ) );
+                output.write( SPACE );
+            }
+            
+            output.write( COSWriter.ARRAY_CLOSE );
+        }
+        else if( o instanceof COSDictionary ) 
+        {
+            COSDictionary obj = (COSDictionary)o;
+            output.write( COSWriter.DICT_OPEN );
+            for (Iterator i = obj.keyList().iterator(); i.hasNext();)
+            {
+                COSName name = (COSName) i.next();
+                COSBase value = obj.getItem(name);
+                if (value != null)
+                {
+                    writeObject( name );
+                    output.write( SPACE );
+
+                    writeObject( value );
+
+                    output.write( SPACE );
+
+                }
+            }
+            output.write( COSWriter.DICT_CLOSE );
+            output.write( SPACE );
+        }
+        else if( o instanceof PDFOperator )
+        {
+            PDFOperator op = (PDFOperator)o;
+            if( op.getOperation().equals( "BI" ) )
+            {
+                output.write( "BI".getBytes() );
+                ImageParameters params = op.getImageParameters();
+                COSDictionary dic = params.getDictionary();
+                Iterator iter = dic.keyList().iterator();
+                while( iter.hasNext() )
+                {
+                    COSName key = (COSName)iter.next();
+                    Object value = dic.getDictionaryObject( key );
+                    key.writePDF( output );
+                    output.write( SPACE );
+                    writeObject( value );
+                    output.write( EOL );
+                }
+                output.write( "ID".getBytes() );
+                output.write( EOL );
+                output.write( op.getImageData() );
+            }
+            else
+            {
+                output.write( op.getOperation().getBytes() );
+                output.write( EOL );
+            }
+        }
+        else
+        {
+            throw new IOException( "Error:Unknown type in content stream:" + o );
+        }
+    }
+    
+    /**
+     * This will write out the list of tokens to the stream.
+     *  
+     * @param tokens The tokens to write to the stream.
+     * @throws IOException If there is an error writing to the stream.
+     */
+    public void writeTokens( List tokens ) throws IOException
+    {
+        writeTokens( tokens, 0, tokens.size() );
+    }
+}
-- 
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