/** @file

  LiteSpeed function declarations used by ATS for hpack.

  @section license License

  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you 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.
 */

/*
MIT License

Copyright (c) 2018 - 2023 LiteSpeed Technologies Inc

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

/** ATS
 *
 * These two function signatures are taken from lshpack.c with their parameter
 * types modified slightly:
 * - uint8_t* instead of unsigned char*
 * - int64_t or uint32_t instead of int.
 */

#pragma once

#include <cstdint>

namespace litespeed {

// Matches upstream lshpack.h's LSHPACK_ERR_MORE_BUF.
constexpr int64_t LSHPACK_ERR_MORE_BUF = -3;

int64_t lshpack_enc_huff_encode(uint8_t const *src,
    uint8_t const *const src_end, uint8_t *dst, uint32_t dst_len);

int64_t lshpack_dec_huff_decode_full(uint8_t const *src, uint32_t src_len,
                                 char *dst, uint32_t dst_len);

int64_t lshpack_dec_huff_decode(uint8_t const *src, uint32_t src_len,
                                 char *dst, uint32_t dst_len);

} // namespace litespeed
