diff options
Diffstat (limited to 'src/main/java/org/pdfbox/pdfwriter/ContentStreamWriter.java')
| -rw-r--r-- | src/main/java/org/pdfbox/pdfwriter/ContentStreamWriter.java | 200 |
1 files changed, 200 insertions, 0 deletions
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() );
+ }
+}
|