C++ (Cpp) _add_history Examples

Example #1

File: console.cpp Project: CheneyWong/fibjs

result_t console_base::readLine(const char *msg, std::string &retVal,
                                exlib::AsyncEvent *ac)
{
#ifndef _WIN32
    static bool _init = false;
    static char *(*_readline)(const char *);
    static void (*_add_history)(char *);

    if (!_init)
    {
        _init = true;

#ifdef MacOS
        void *handle = dlopen("libreadline.dylib", RTLD_LAZY);
#else
        const char *readline_dylib_names[] =
        {
            "libreadline.so.6",
            "libreadline.so.5",
            "libreadline.so"
        };
        const size_t readline_dylib_names_size = ARRAYSIZE(readline_dylib_names);
        void *handle = 0;

        for (size_t i = 0; i < readline_dylib_names_size; i++)
        {
            handle = dlopen(readline_dylib_names[i], RTLD_LAZY);
            if (handle) break;
        }
#endif

        if (handle)
        {
            _readline = (char *(*)(const char *))dlsym(handle, "readline");
            _add_history = (void (*)(char *))dlsym(handle, "add_history");
        }
    }
#endif

    if (!ac)
    {
        flushLog();
        return CHECK_ERROR(CALL_E_NOSYNC);
    }

#ifndef _WIN32
    if (_readline && _add_history)
    {
        char *line = _readline(msg);

        if (!line)
            return CHECK_ERROR(LastError());

        if (*line)
        {
            _add_history(line);
            retVal = line;
        }
        free(line);
    }
    else
#endif
    {
        s_std.out(msg);
        char *line = read_line();

        if (!line)
            return CHECK_ERROR(LastError());

        retVal = line;
        free(line);
    }

    return 0;
}

Example #2

File: console.cpp Project: jonesgithub/fibjs

result_t console_base::readLine(const char *msg, std::string &retVal,
                                exlib::AsyncEvent *ac)
{
#ifndef _WIN32
    static bool _init = false;
    static char *(*_readline)(const char *);
    static void (*_add_history)(char *);

    if (!_init)
    {
        _init = true;

#ifdef MacOS
        void *handle = dlopen("libreadline.dylib", RTLD_LAZY);
#else
        void *handle = dlopen("libreadline.so", RTLD_LAZY);
#endif

        if (handle)
        {
            _readline = (char *(*)(const char *))dlsym(handle, "readline");
            _add_history = (void (*)(char *))dlsym(handle, "add_history");
        }
    }
#endif

    if (!ac)
    {
        flushLog();
        return CALL_E_NOSYNC;
    }

#ifndef _WIN32
    if (_readline && _add_history)
    {
        char *line;

        if ((line = _readline(msg)) != NULL)
        {
            if (*line)
            {
                _add_history(line);
                retVal = line;
            }
            free(line);
        }
    }
    else
#endif
    {
        char *line;

        logger::std_out(msg);

        if ((line = read_line()) != NULL)
        {
            retVal = line;
            free(line);
        }
    }

    return 0;
}

Example #3

File: console.cpp Project: ngot/fibjs

result_t console_base::readLine(exlib::string msg, exlib::string &retVal,
                                AsyncEvent *ac)
{
    if (!ac)
        return CHECK_ERROR(CALL_E_LONGSYNC);

    flushLog();

#ifndef _WIN32
    static bool _init = false;
    static char *(*_readline)(const char *);
    static void (*_add_history)(char *);

#ifdef DEBUG
#ifdef __clang__
    static void (*_free)(void*);

    if (_free == 0)
        _free = (void (*)(void*))dlsym(RTLD_NEXT, "free");
#else
#define _free __real_free
#endif
#else
#define _free free
#endif

    if (!_init)
    {
        _init = true;

#ifdef __clang__
        void *handle = dlopen("libreadline.dylib", RTLD_LAZY);
#else
        const char *readline_dylib_names[] =
        {
            "libreadline.so.6",
            "libreadline.so.5",
            "libreadline.so"
        };
        const size_t readline_dylib_names_size = ARRAYSIZE(readline_dylib_names);
        void *handle = 0;

        for (size_t i = 0; i < readline_dylib_names_size; i++)
        {
            handle = dlopen(readline_dylib_names[i], RTLD_LAZY);
            if (handle) break;
        }
#endif

        if (handle)
        {
            _readline = (char *(*)(const char *))dlsym(handle, "readline");
            _add_history = (void (*)(char *))dlsym(handle, "add_history");
        } else
        {
            _readline = readline;
            _add_history = add_history;
        }
    }

    if (isatty(fileno(stdin)))
    {
        char *line;
        const char* lfptr = qstrrchr(msg.c_str(), '\n');

        if (lfptr != NULL)
        {
            puts(msg.substr(0, lfptr - msg.c_str()).c_str());
            line = _readline(lfptr + 1);
        }
        else
            line = _readline(msg.c_str());

        if (!line)
            return CHECK_ERROR(LastError());

        if (*line)
        {
            _add_history(line);
            retVal = line;
        }
        _free(line);
    } else
#endif
    {
        std_logger::out(msg);
        char *line = read_line();

        if (!line)
            return CHECK_ERROR(LastError());

        retVal = line;
        free(line);
    }

    return 0;
}