1 files changed, 90 insertions, 0 deletions
diff --git a/src/main/java/com/kitfox/svg/xml/Base64OutputStream.java b/src/main/java/com/kitfox/svg/xml/Base64OutputStream.java
new file mode 100755
index 0000000..db167de
--- /dev/null
+++ b/src/main/java/com/kitfox/svg/xml/Base64OutputStream.java
@@ -0,0 +1,90 @@
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package com.kitfox.svg.xml;
+
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ *
+ * @author kitfox
+ */
+public class Base64OutputStream extends FilterOutputStream
+{
+    int buf;
+    int numBytes;
+    int numChunks;
+    
+    public Base64OutputStream(OutputStream out)
+    {
+        super(out);
+    }
+    
+    public void flush() throws IOException
+    {
+        out.flush();
+    }
+    
+    public void close() throws IOException
+    {
+        switch (numBytes)
+        {
+            case 1:
+                buf <<= 4;
+                out.write(getBase64Byte(1));
+                out.write(getBase64Byte(0));
+                out.write('=');
+                out.write('=');
+                break;
+            case 2:
+                buf <<= 2;
+                out.write(getBase64Byte(2));
+                out.write(getBase64Byte(1));
+                out.write(getBase64Byte(0));
+                out.write('=');
+                break;
+            case 3:
+                out.write(getBase64Byte(3));
+                out.write(getBase64Byte(2));
+                out.write(getBase64Byte(1));
+                out.write(getBase64Byte(0));
+                break;
+            default:
+                assert false;
+        }
+        
+        out.close();
+    }
+    
+    public void write(int b) throws IOException
+    {
+        buf = (buf << 8) | (0xff & b);
+        numBytes++;
+        
+        if (numBytes == 3)
+        {
+            out.write(getBase64Byte(3));
+            out.write(getBase64Byte(2));
+            out.write(getBase64Byte(1));
+            out.write(getBase64Byte(0));
+            
+            numBytes = 0;
+            numChunks++;
+            if (numChunks == 16)
+            {
+//                out.write('\r');
+//                out.write('\n');
+                numChunks = 0;
+            }
+        }
+    }
+    
+    public byte getBase64Byte(int index)
+    {
+        return Base64Util.encodeByte((buf >> (index * 6)) & 0x3f);
+    }
+}