Repo restructuring

1 files changed, 119 insertions, 0 deletions

diff --git a/ACE/ace/Codecs.h b/ACE/ace/Codecs.h
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+++ b/ACE/ace/Codecs.h
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+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file   Codecs.h
+ *
+ *  $Id$
+ *
+ *  @author Krishnakumar B <kitty@cs.wustl.edu>
+ *
+ *  Codecs is a generic wrapper for various encoding and decoding
+ *  mechanisms. Currently it includes Base64 content transfer-encoding as
+ *  specified by RFC 2045, Multipurpose Internet Mail Extensions (MIME) Part
+ *  One: Format of Internet Message Bodies.
+ *
+ */
+//=============================================================================
+
+#ifndef ACE_CODECS_H
+#define ACE_CODECS_H
+
+#include /**/ "ace/pre.h"
+
+#include "ace/ACE_export.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "ace/Basic_Types.h"
+#include "ace/Global_Macros.h"
+
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+/**
+ * @class ACE_Base64
+ *
+ * @brief Encode/Decode a stream of bytes according to Base64 encoding.
+ *
+ * This class provides methods to encode or decode a stream of bytes
+ * to/from Base64 encoding. It doesn't convert the input stream to a
+ * canonical form before encoding.
+ *
+ */
+class ACE_Export ACE_Base64
+{
+public:
+
+  //@{
+
+  /**
+   * Encodes a stream of bytes to Base64 data
+   *
+   * @param input Binary data in byte stream.
+   * @param input_len Length of the byte stream.
+   * @param output_len Length of the encoded Base64 byte stream.
+   * @return Encoded Base64 data in byte stream or NULL if input data cannot
+   *         be encoded.
+   */
+
+  static ACE_Byte* encode (const ACE_Byte* input,
+                           const size_t input_len,
+                           size_t* output_len);
+  /**
+   * Decodes a stream of Base64 to bytes data
+   *
+   * @param input Encoded Base64 data in byte stream.
+   * @param output_len Length of the binary byte stream.
+   * @return Binary data in byte stream or NULL if input data cannot
+   *         be encoded.
+   */
+  static ACE_Byte* decode (const ACE_Byte* input,
+                           size_t* output_len);
+
+  /**
+   * Return the length of the encoded input data
+   *
+   * @param input Encoded Base64 data in byte stream.
+   * @return Length of the encoded Base64 data.
+   *
+   */
+  static size_t length (const ACE_Byte* input);
+
+  //@}
+
+protected:
+
+  // Prevent default construction.
+  ACE_Base64 (void) {}
+
+private:
+
+  // Preventing copying and assignment.
+  ACE_Base64 (ACE_Base64 const &);
+  ACE_Base64 & operator= (ACE_Base64 const &);
+
+  /// Initialize the tables for encoding/decoding.
+  static void init (void);
+
+private:
+
+  /// Alphabet used for decoding i.e decoder_[alphabet_[i = 0..63]] = i
+  static ACE_Byte decoder_[];
+
+  /// Alphabet used to check valid range of encoded input i.e
+  /// member_[alphabet_[0..63]] = 1
+  static ACE_Byte member_[];
+
+  /// Boolean to denote whether initialization is complete
+  static bool init_;
+
+};
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#include /**/ "ace/post.h"
+
+#endif /* ACE_CODECS_H */