1 files changed, 161 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/cmaptypes/CMap.java b/src/main/java/org/pdfbox/cmaptypes/CMap.java
new file mode 100644
index 0000000..a8f7fec
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+++ b/src/main/java/org/pdfbox/cmaptypes/CMap.java
@@ -0,0 +1,161 @@
+/**
+ * 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.cmaptypes;
+
+import java.io.IOException;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * This class represents a CMap file.
+ *
+ * @author  Ben Litchfield (ben@csh.rit.edu)
+ * @version $Revision: 1.6 $
+ */
+public class CMap
+{
+    private List codeSpaceRanges = new ArrayList();
+    private Map singleByteMappings = new HashMap();
+    private Map doubleByteMappings = new HashMap();
+
+    /**
+     * Creates a new instance of CMap.
+     */
+    public CMap()
+    {
+        //default constructor
+    }
+    
+    /**
+     * This will tell if this cmap has any one byte mappings.
+     * 
+     * @return true If there are any one byte mappings, false otherwise.
+     */
+    public boolean hasOneByteMappings()
+    {
+        return singleByteMappings.size() > 0;
+    }
+    
+    /**
+     * This will tell if this cmap has any two byte mappings.
+     * 
+     * @return true If there are any two byte mappings, false otherwise.
+     */
+    public boolean hasTwoByteMappings()
+    {
+        return doubleByteMappings.size() > 0;
+    }
+
+    /**
+     * This will perform a lookup into the map.
+     *
+     * @param code The code used to lookup.
+     * @param offset The offset into the byte array.
+     * @param length The length of the data we are getting.
+     *
+     * @return The string that matches the lookup.
+     */
+    public String lookup( byte[] code, int offset, int length )
+    {
+
+        String result = null;
+        Integer key = null;
+        if( length == 1 )
+        {
+            
+            key = new Integer( (code[offset]+256)%256 );
+            result = (String)singleByteMappings.get( key );
+        }
+        else if( length == 2 )
+        {
+            int intKey = (code[offset]+256)%256;
+            intKey <<= 8;
+            intKey += (code[offset+1]+256)%256;
+            key = new Integer( intKey );
+
+            result = (String)doubleByteMappings.get( key );
+        }
+
+        return result;
+    }
+
+    /**
+     * This will add a mapping.
+     *
+     * @param src The src to the mapping.
+     * @param dest The dest to the mapping.
+     *
+     * @throws IOException if the src is invalid.
+     */
+    public void addMapping( byte[] src, String dest ) throws IOException
+    {
+        if( src.length == 1 )
+        {
+            singleByteMappings.put( new Integer( src[0] ), dest );
+        }
+        else if( src.length == 2 )
+        {
+            int intSrc = src[0];
+            intSrc <<= 8;
+            intSrc |= (src[1]&0xFF);
+            doubleByteMappings.put( new Integer( intSrc ), dest );
+        }
+        else
+        {
+            throw new IOException( "Mapping code should be 1 or two bytes and not " + src.length );
+        }
+    }
+
+
+    /**
+     * This will add a codespace range.
+     *
+     * @param range A single codespace range.
+     */
+    public void addCodespaceRange( CodespaceRange range )
+    {
+        codeSpaceRanges.add( range );
+    }
+
+    /**
+     * Getter for property codeSpaceRanges.
+     *
+     * @return Value of property codeSpaceRanges.
+     */
+    public List getCodeSpaceRanges()
+    {
+        return codeSpaceRanges;
+    }
+
+}
+\ No newline at end of file