chromium/third_party/crashpad/crashpad/util/stream/base94_output_stream.h

// Copyright 2019 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef CRASHPAD_UTIL_STREAM_BASE94_OUTPUT_STREAM_H_
#define CRASHPAD_UTIL_STREAM_BASE94_OUTPUT_STREAM_H_

#include <stddef.h>
#include <stdint.h>

#include <memory>
#include <vector>

#include "util/stream/output_stream_interface.h"

namespace crashpad {

//! \brief This class implements Base94 encoding/decoding, it uses all
//! printable characters except space for encoding, and no padding is required.
//!
//! This implementation uses two base94 symbols to encoding 13 or 14 bit data,
//! To maximize encoding efficiency, 14-bit data is encoded into two base94
//! symbols if its low 13-bit is less than 644 ( = 94^2 - 2^13), otherwise
//! 13-bit data is encoded.
class Base94OutputStream : public OutputStreamInterface { … };

}  // namespace crashpad

#endif  // CRASHPAD_UTIL_STREAM_BASE94_OUTPUT_STREAM_H_