1 files changed, 231 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/ttf/MemoryTTFDataStream.java b/src/main/java/org/pdfbox/ttf/MemoryTTFDataStream.java
new file mode 100644
index 0000000..17f4455
--- /dev/null
+++ b/src/main/java/org/pdfbox/ttf/MemoryTTFDataStream.java
@@ -0,0 +1,231 @@
+/**
+ * Copyright (c) 2005, 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.ttf;
+
+import java.io.ByteArrayOutputStream;
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.pdfbox.pdmodel.common.PDMemoryStream;
+import org.pdfbox.pdmodel.common.PDStream;
+
+/**
+ * An interface into a data stream.
+ * 
+ * @author Ben Litchfield (ben@benlitchfield.com)
+ * @version $Revision: 1.3 $
+ */
+public class MemoryTTFDataStream extends TTFDataStream 
+{
+    private byte[] data = null;
+    private int currentPosition = 0;
+    
+    /**
+     * Constructor from a stream. 
+     * @param is The stream of read from.
+     * @throws IOException If an error occurs while reading from the stream.
+     */
+    public MemoryTTFDataStream( InputStream is ) throws IOException
+    {
+        try
+        {
+            ByteArrayOutputStream output = new ByteArrayOutputStream( is.available() );
+            byte[] buffer = new byte[1024];
+            int amountRead = 0;
+            while( (amountRead = is.read( buffer ) ) != -1 )
+            {
+                output.write( buffer, 0, amountRead );
+            }
+            data = output.toByteArray();
+        }
+        finally
+        {
+            if( is != null )
+            {
+                is.close();
+            }
+        }
+    }
+    
+
+    
+    /**
+     * Read an unsigned byte.
+     * @return An unsigned byte.
+     * @throws IOException If there is an error reading the data.
+     */
+    public long readLong() throws IOException
+    {
+        return ((long)(readSignedInt()) << 32) + (readSignedInt() & 0xFFFFFFFFL);
+    }
+    
+    /**
+     * Read a signed integer.
+     * 
+     * @return A signed integer.
+     * @throws IOException If there is a problem reading the file.
+     */
+    public int readSignedInt() throws IOException
+    {
+        int ch1 = read();
+        int ch2 = read();
+        int ch3 = read();
+        int ch4 = read();
+        if( (ch1 | ch2 | ch3 | ch4) < 0)
+        {
+            throw new EOFException();
+        }
+        return ((ch1 << 24) + (ch2 << 16) + (ch3 << 8) + (ch4 << 0));
+    }
+    
+    /**
+     * Read an unsigned byte.
+     * @return An unsigned byte.
+     * @throws IOException If there is an error reading the data.
+     */
+    public int read() throws IOException
+    {
+        int retval = -1;
+        if( currentPosition < data.length )
+        {
+            retval = data[currentPosition];
+        }
+        currentPosition++;
+        return (retval+256)%256;
+    }
+    
+    /**
+     * Read an unsigned short.
+     * 
+     * @return An unsigned short.
+     * @throws IOException If there is an error reading the data.
+     */
+    public int readUnsignedShort() throws IOException
+    {
+        int ch1 = this.read();
+        int ch2 = this.read();
+        if ((ch1 | ch2) < 0)
+        {
+            throw new EOFException();
+        }
+        return (ch1 << 8) + (ch2 << 0);
+    }
+    
+    /**
+     * Read an signed short.
+     * 
+     * @return An signed short.
+     * @throws IOException If there is an error reading the data.
+     */
+    public short readSignedShort() throws IOException
+    {
+        int ch1 = this.read();
+        int ch2 = this.read();
+        if ((ch1 | ch2) < 0)
+        {
+            throw new EOFException();
+        }
+        return (short)((ch1 << 8) + (ch2 << 0));
+    }
+    
+    /**
+     * Close the underlying resources.
+     * 
+     * @throws IOException If there is an error closing the resources.
+     */
+    public void close() throws IOException
+    {
+        data = null;
+    }
+    
+    /**
+     * Seek into the datasource.
+     * 
+     * @param pos The position to seek to.
+     * @throws IOException If there is an error seeking to that position.
+     */
+    public void seek(long pos) throws IOException
+    {
+        currentPosition = (int)pos;
+    }
+    
+    /**
+     * @see java.io.InputStream#read( byte[], int, int )
+     * 
+     * @param b The buffer to write to.
+     * @param off The offset into the buffer.
+     * @param len The length into the buffer.
+     * 
+     * @return The number of bytes read.
+     * 
+     * @throws IOException If there is an error reading from the stream.
+     */
+    public int read(byte[] b,
+            int off,
+            int len)
+     throws IOException
+     {
+        int amountRead = Math.min( len, data.length-currentPosition );
+        System.arraycopy(data,currentPosition,b, off, amountRead );
+        currentPosition+=amountRead;
+        
+        return amountRead;
+     }
+    
+    /**
+     * Get the current position in the stream.
+     * @return The current position in the stream.
+     * @throws IOException If an error occurs while reading the stream.
+     */
+    public long getCurrentPosition() throws IOException
+    {
+        return currentPosition;
+    }
+    
+    /**
+     * Get a COSStream from this TTFDataStream
+     * This permit to pass the data read from an
+     * external source to the COSObjects to keep
+     * a certain persistence layer between specialized
+     * objects like the TTF package and the pdmodel package.
+     *
+     * Created by Pascal Allain
+     * Vertical7 Inc.
+     *
+     * @return COSStream describing this stream
+     */
+    public PDStream getPDStream()
+    {
+        return new PDMemoryStream( data );
+    }
+
+}
+\ No newline at end of file