Imported existing code

indra/llcommon/llbase64.cpp

@@ -0,0 +1,67 @@
+/** 
+ * @file llbase64.cpp
+ * @brief Wrapper for apr base64 encoding that returns a std::string
+ * @author James Cook
+ *
+ * $LicenseInfo:firstyear=2007&license=viewergpl$
+ * 
+ * Copyright (c) 2007-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llbase64.h"
+
+#include <string>
+
+#include "apr_base64.h"
+
+
+// static
+std::string LLBase64::encode(const U8* input, size_t input_size)
+{
+	std::string output;
+	if (input
+		&& input_size > 0)
+	{
+		// Yes, it returns int.
+		int b64_buffer_length = apr_base64_encode_len(input_size);
+		char* b64_buffer = new char[b64_buffer_length];
+		
+		// This is faster than apr_base64_encode() if you know
+		// you're not on an EBCDIC machine.  Also, the output is
+		// null terminated, even though the documentation doesn't
+		// specify.  See apr_base64.c for details. JC
+		b64_buffer_length = apr_base64_encode_binary(
+			b64_buffer,
+			input,
+			input_size);
+		output.assign(b64_buffer);
+		delete[] b64_buffer;
+	}
+	return output;
+}
+