FileHelpers.hpp

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#pragma once
 
#include <fstream>
#include <regex>
#include <string>
#include <vector>
 
inline std::vector<std::string> findFromFile(const std::string &filePath, const std::string &pattern,
                                             std::string &lastWord)
{
    const std::regex regExp(pattern);
    std::ifstream inFile(filePath);
    std::vector<std::string> matchedLines;
 
    std::string readLine;
    while (getline(inFile, readLine))
    {
        if (std::regex_search(readLine, regExp))
        {
            matchedLines.push_back(readLine);
        }
    }
 
    if (!matchedLines.empty())
    {
        auto pos = matchedLines.front().find_last_of(' ');
        if (pos != std::string::npos && pos != matchedLines.front().size())
        {
            lastWord = matchedLines.front().substr(pos + 1);
        }
    }
 
    return matchedLines;
}
 
inline std::vector<std::string> findFromFile(const std::string &filePath, const std::string &pattern)
{
    std::string lastWord;
    return findFromFile(filePath, pattern, lastWord);
}