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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 COPYRIGHT
* OWNER 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.
*/
// This file contains the declaration of functions for dealing with base64
// encoding and decoding
#ifndef O3D_UTILS_CROSS_BASE64_H_
#define O3D_UTILS_CROSS_BASE64_H_
#include <stddef.h>
namespace o3d {
namespace base64 {
// The possible error codes that can occur during a decoding.
enum DecodeStatus {
kSuccess,
kPadError,
kBadCharError,
kOutputOverflowError
};
// Returns the number of bytes needed to encode length bytes in base64.
size_t GetEncodeLength(size_t length);
// Encodes the src into base64 into the dst. The dst must have enough
// space to hold the result.
// Parameters:
// src: pointer to source data.
// length: the length of the source data
// dst: pointer to place to store result.
void Encode(const void* src, size_t length, void* dst);
// Used to obtain the number of bytes needed to decode the src data
// from base64.
// Parameters:
// src: pointer to the source data.
// input_length: the length of the source data
// decode_length: the length in bytes of the decoded data will be
// placed here.
DecodeStatus GetDecodeLength(const void* src,
size_t input_length,
size_t* decode_length);
// Decodes the src, which should be encoded in base64, into the dst.
// dst must have enough space to hold the result. The number of bytes
// necessary can be obtained by calling GetDecodeLength()
// Parameters:
// src: pointer to the source data
// input_length: the length of the source data
// dst: pointer to where the result should be stored.
// dst_buffer_length: the size in bytes of the dst buffer. This is
// used to check for buffer overflow.
// Returns an error code (of type DecodeStatus)
DecodeStatus Decode(const void* src,
size_t input_length,
void* dst,
size_t dst_buffer_length);
} // namespace base64
} // namespace o3d
#endif // O3D_UTILS_CROSS_BASE64_H_
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