shell_var.h

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#pragma once
 
#include <string>
 
#include "BashSpark/tools/shell_hash.h"
 
namespace bs {
    class shell_var {
    public:
        shell_var() = default;
 
    public:
        [[nodiscard]] std::string get_var(const std::string &sVar) const {
            const auto pIter = this->m_mVariables.find(sVar);
            return pIter != this->m_mVariables.end() ? pIter->second : "";
        }
 
        [[nodiscard]] std::string get_var_hop2(const std::string &sVar) const {
            const auto pIter1 = this->m_mVariables.find(sVar);
            if (pIter1 == this->m_mVariables.end()) return "";
            const auto pIter2 = this->m_mVariables.find(pIter1->second);
            return pIter2 != this->m_mVariables.end() ? pIter2->second : "";
        }
 
        void set_var(std::string sVar, std::string sValue) {
            this->m_mVariables.insert_or_assign(std::move(sVar), std::move(sValue));
        }
 
        [[nodiscard]] bool has_var(const std::string &sVar) const noexcept {
            return this->m_mVariables.contains(sVar);
        }
 
        [[nodiscard]] std::size_t get_var_size() const noexcept {
            return this->m_mVariables.size();
        }
 
        [[nodiscard]] const std::unordered_map<std::string, std::string, shell_hash> &get_var() const noexcept {
            return this->m_mVariables;
        }
 
    private:
        std::unordered_map<std::string, std::string, shell_hash> m_mVariables;
 
    };
} // namespace bs