Added simple hex encoder/decoder filter.

1 files changed, 57 insertions, 0 deletions

diff --git a/src/hex.h b/src/hex.h
new file mode 100644
index 0000000..3595fae
--- /dev/null
+++ b/src/hex.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2007-2011 Xagasoft, All rights reserved.
+ *
+ * This file is part of the libbu++ library and is released under the
+ * terms of the license contained in the file LICENSE.
+ */
+
+#ifndef BU_HEX_H
+#define BU_HEX_H
+
+#include "bu/filter.h"
+
+namespace Bu
+{
+        /**
+         * This very simple filter encodes to/decodes from hex encoded string data.
+         * The primary use of this filter is in debugging, use it with
+         * Bu::encodeStr to easily create hex dumps of string data, even other raw
+         * structures.
+         *
+         *@code
+         Bu::println("Hexdump: " + Bu::encodeStr<Bu::Hex>("Test data ;)") );
+         @endcode
+         * Or...
+         *@code
+         complex_struct data;
+         ...
+         Bu::println("Hexdump: " +
+                Bu::encodeStr<Bu::Hex>(
+                        Bu::String( &data, sizeof(data) )
+                        )
+                );
+         @endcode
+         **/
+        class Hex : public Bu::Filter
+        {
+        public:
+                Hex( Bu::Stream &rNext, bool bUpperCase=false, int iChunk=-1 );
+                virtual ~Hex();
+
+                virtual void start();
+                virtual Bu::size stop();
+
+                virtual Bu::size read( void *pBuf, Bu::size iBytes );
+                virtual Bu::size write( const void *pBuf, Bu::size iBytes );
+                using Bu::Stream::write;
+
+        private:
+                int iChunk;
+                Bu::size iPos;
+                char cIn[2];
+                int iIn;
+                const char *sChrs;
+        };
+};
+
+#endif