在普通的C Windows API中将命令行解析为参数的规范方法

在Windows程序中,将从GetCommandLine获取的命令行解析为多个参数的规范方法是什么,类似于Unix中的argv数组？似乎CommandLineToArgvW为Unicode命令行执行此操作,但我找不到非Unicode等效项.我应该使用Unicode吗？如果没有,我该如何解析命令行？

这是CommandLineToArgvA的一个实现,它将工作委托给CommandLineToArgvW,MultiByteToWideChar和WideCharToMultiByte.

LPSTR* CommandLineToArgvA(LPSTR lpCmdLine, INT *pNumArgs)
{
    int retval;
    retval = MultiByteToWideChar(CP_ACP, MB_ERR_INVALID_CHARS, lpCmdLine, -1, NULL, 0);
    if (!SUCCEEDED(retval))
        return NULL;

    LPWSTR lpWideCharStr = (LPWSTR)malloc(retval * sizeof(WCHAR));
    if (lpWideCharStr == NULL)
        return NULL;

    retval = MultiByteToWideChar(CP_ACP, MB_ERR_INVALID_CHARS, lpCmdLine, -1, lpWideCharStr, retval);
    if (!SUCCEEDED(retval))
    {
        free(lpWideCharStr);
        return NULL;
    }

    int numArgs;
    LPWSTR* args;
    args = CommandLineToArgvW(lpWideCharStr, &numArgs);
    free(lpWideCharStr);
    if (args == NULL)
        return NULL;

    int storage = numArgs * sizeof(LPSTR);
    for (int i = 0; i < numArgs; ++ i)
    {
        BOOL lpUsedDefaultChar = FALSE;
        retval = WideCharToMultiByte(CP_ACP, 0, args[i], -1, NULL, 0, NULL, &lpUsedDefaultChar);
        if (!SUCCEEDED(retval))
        {
            LocalFree(args);
            return NULL;
        }

        storage += retval;
    }

    LPSTR* result = (LPSTR*)LocalAlloc(LMEM_FIXED, storage);
    if (result == NULL)
    {
        LocalFree(args);
        return NULL;
    }

    int bufLen = storage - numArgs * sizeof(LPSTR);
    LPSTR buffer = ((LPSTR)result) + numArgs * sizeof(LPSTR);
    for (int i = 0; i < numArgs; ++ i)
    {
        assert(bufLen > 0);
        BOOL lpUsedDefaultChar = FALSE;
        retval = WideCharToMultiByte(CP_ACP, 0, args[i], -1, buffer, bufLen, NULL, &lpUsedDefaultChar);
        if (!SUCCEEDED(retval))
        {
            LocalFree(result);
            LocalFree(args);
            return NULL;
        }

        result[i] = buffer;
        buffer += retval;
        bufLen -= retval;
    }

    LocalFree(args);

    *pNumArgs = numArgs;
    return result;
}

显然你可以在main()之外使用__argv来访问预先解析的参数向量...