source: mainline/uspace/app/msim/arch_helenos/input.c@ 07b7c48

/*
 * Copyright (c) 2012 Vojtech Horky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup msim
 * @{
 */
/** @file HelenOS specific functions for MSIM simulator.
 */

/* Because of asprintf. */
#define _GNU_SOURCE
#include "../../io/input.h"
#include "../../io/output.h"
#include "../../fault.h"
#include "helenos.h"
#include <tinput.h>
#include <errno.h>
#include <stdlib.h>

static tinput_t *input_prompt;

/** Terminal and readline initialization
 *
 */
void input_init(void)
{
        input_prompt = tinput_new();
        if (input_prompt == NULL) {
                die(1, "Failed to intialize input.");
        }
        helenos_dprinter_init();
}

void input_inter(void)
{
}

void input_shadow( void)
{
}

void input_back( void)
{
}

char *helenos_input_get_next_command(void)
{
        tinput_set_prompt(input_prompt, "[msim] ");

        char *commline = NULL;
        int rc = tinput_read(input_prompt, &commline);

        if (rc == ENOENT) {
                rc = asprintf(&commline, "quit");
                mprintf("Quit\n");
                if (rc != EOK) {
                        exit(1);
                }
        }

        /* On error, it remains NULL. */
        return commline;
}


bool stdin_poll(char *key)
{
        cons_event_t ev;
        suseconds_t timeout = 0;
        errno = EOK;
        console_flush(input_prompt->console);
        bool has_input = console_get_event_timeout(input_prompt->console, &ev, &timeout);
        if (!has_input) {
                return false;
        }

        if (ev.type != CEV_KEY || ev.ev.key.type != KEY_PRESS)
                return false;

        *key = ev.ev.key.c;

        return true;
}