ArgumentValidation.h

/*++

Copyright (c) Microsoft. All rights reserved.

Module Name:

    ArgumentValidation.h

Abstract:

    Declaration of argument validation functions.

--*/
#pragma once

#include "Exceptions.h"
#include "ContainerModel.h"
#include <string>
#include <vector>
#include <charconv>
#include <format>
#include <wslc.h>
#include <string.hpp>

using namespace wsl::windows::wslc::models;

namespace wsl::windows::wslc::validation {

template <typename T>
void ValidateIntegerFromString(const std::vector<std::wstring>& values, const std::wstring& argName)
{
    for (const auto& value : values)
    {
        std::ignore = GetIntegerFromString<T>(value, argName);
    }
}

template <typename T>
T GetIntegerFromString(const std::wstring& value, const std::wstring& argName = {})
{
    std::string narrowValue = wsl::windows::common::string::WideToMultiByte(value);

    T convertedValue{};
    const char* begin = narrowValue.c_str();
    const char* end = begin + narrowValue.size();
    auto result = std::from_chars(begin, end, convertedValue);

    // Reject conversion errors and partial parses (e.g. "1.5", "9abc")
    if (result.ec != std::errc() || result.ptr != end)
    {
        throw ArgumentException(std::format(L"Invalid {} argument value: {}", argName, value));
    }

    return convertedValue;
}

void ValidateWSLCSignalFromString(const std::vector<std::wstring>& values, const std::wstring& argName);
WSLCSignal GetWSLCSignalFromString(const std::wstring& input, const std::wstring& argName = {});

void ValidateFormatTypeFromString(const std::vector<std::wstring>& values, const std::wstring& argName);
FormatType GetFormatTypeFromString(const std::wstring& input, const std::wstring& argName = {});

void ValidateVolumeMount(const std::vector<std::wstring>& values);

void ValidateCidFile(const std::wstring& cidFile);

} // namespace wsl::windows::wslc::validation