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+/**
+ * Copyright (c) 2003, 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.filter;
+
+import java.io.IOException;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.pdfbox.cos.COSName;
+
+/**
+ * This will contain manage all the different types of filters that are available.
+ *
+ * @author Ben Litchfield
+ * @version $Revision: 1.12 $
+ */
+public class FilterManager
+{
+ private Map filters = new HashMap();
+
+ /**
+ * Constructor.
+ */
+ public FilterManager()
+ {
+ Filter flateFilter = new FlateFilter();
+ Filter dctFilter = new DCTFilter();
+ Filter ccittFaxFilter = new CCITTFaxDecodeFilter();
+ Filter lzwFilter = new LZWFilter();
+ Filter asciiHexFilter = new ASCIIHexFilter();
+ Filter ascii85Filter = new ASCII85Filter();
+ Filter runLengthFilter = new RunLengthDecodeFilter();
+
+ addFilter( COSName.FLATE_DECODE, flateFilter );
+ addFilter( COSName.FLATE_DECODE_ABBREVIATION, flateFilter );
+ addFilter( COSName.DCT_DECODE, dctFilter );
+ addFilter( COSName.DCT_DECODE_ABBREVIATION, dctFilter );
+ addFilter( COSName.CCITTFAX_DECODE, ccittFaxFilter );
+ addFilter( COSName.CCITTFAX_DECODE_ABBREVIATION, ccittFaxFilter );
+ addFilter( COSName.LZW_DECODE, lzwFilter );
+ addFilter( COSName.LZW_DECODE_ABBREVIATION, lzwFilter );
+ addFilter( COSName.ASCII_HEX_DECODE, asciiHexFilter );
+ addFilter( COSName.ASCII_HEX_DECODE_ABBREVIATION, asciiHexFilter );
+ addFilter( COSName.ASCII85_DECODE, ascii85Filter );
+ addFilter( COSName.ASCII85_DECODE_ABBREVIATION, ascii85Filter );
+ addFilter( COSName.RUN_LENGTH_DECODE, runLengthFilter );
+ addFilter( COSName.RUN_LENGTH_DECODE_ABBREVIATION, runLengthFilter );
+
+ }
+
+ /**
+ * This will get all of the filters that are available in the system.
+ *
+ * @return All available filters in the system.
+ */
+ public Collection getFilters()
+ {
+ return filters.values();
+ }
+
+ /**
+ * This will add an available filter.
+ *
+ * @param filterName The name of the filter.
+ * @param filter The filter to use.
+ */
+ public void addFilter( COSName filterName, Filter filter )
+ {
+ filters.put( filterName, filter );
+ }
+
+ /**
+ * This will get a filter by name.
+ *
+ * @param filterName The name of the filter to retrieve.
+ *
+ * @return The filter that matches the name.
+ *
+ * @throws IOException If the filter could not be found.
+ */
+ public Filter getFilter( COSName filterName ) throws IOException
+ {
+ Filter filter = (Filter)filters.get( filterName );
+ if( filter == null )
+ {
+ throw new IOException( "Unknown stream filter:" + filterName );
+ }
+
+ return filter;
+ }
+
+ /**
+ * This will get a filter by name.
+ *
+ * @param filterName The name of the filter to retrieve.
+ *
+ * @return The filter that matches the name.
+ *
+ * @throws IOException If the filter could not be found.
+ */
+ public Filter getFilter( String filterName ) throws IOException
+ {
+ return getFilter( COSName.getPDFName( filterName ) );
+ }
+} \ No newline at end of file