ArmoredInputStream.h

/*
 * Copyright 2016-2024 Luca Zanconato
 *
 * 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 SALTPACK_ARMOREDINPUTSTREAM_H
#define SALTPACK_ARMOREDINPUTSTREAM_H
 
#include <iostream>
#include <sstream>
#include "types.h"
 
namespace saltpack {
 
    class ArmoredInputStream : public std::istream, std::streambuf {
 
    public:
        ArmoredInputStream(std::istream &in, const std::string& app);
 
        explicit ArmoredInputStream(std::istream &in);
 
        ~ArmoredInputStream() override;
 
        int underflow() override;
 
    private:
        char ch{};
        std::string app;
        std::istream &input;
        std::stringstream buffer;
        BYTE_ARRAY dataBuffer;
        size_t index;
        bool dataReady;
        bool footerReached;
        bool footerVerified;
        std::string mode;
    };
}
 
#endif //SALTPACK_ARMOREDINPUTSTREAM_H