emdedded_resource_reader.h

/*
 * Copyright (c) 2023 by Mark Tarrabain 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 the 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 HOLDER 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.
 */
#pragma once

#include "encoding_utils.h"
#include <string>
#include <unordered_map>
#include <vector>

class IResourceReader {
public:
    virtual std::vector<std::string> readLines() = 0;
};

class EmbeddedResourceReader : public IResourceReader {
public:
    EmbeddedResourceReader(const std::string& resourceName);
    std::vector<std::string> readLines() override;
private:
    std::string resourceName_;
};

class EmbeddedResourceLoader {
public:
    EmbeddedResourceLoader(
        const std::string& dataSourceName,
        IResourceReader* reader = nullptr
    );
    
    std::unordered_map<std::vector<uint8_t>, int, VectorHash>
    loadTokenBytePairEncoding();

private:
    std::vector<std::string> readEmbeddedResourceAsLines();

private:
    IResourceReader* resourceReader_;
    std::string dataSourceName_;
};