/*
 * msg
 * Copyright (C) 2025  Raghuram Subramani <raghus2247@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#define _GNU_SOURCE

#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <util.h>

int
msleep(long msec)
{
    struct timespec ts;
    int res;

    if (msec < 0) {
        errno = EINVAL;
        return -1;
    }

    ts.tv_sec = msec / 1000;
    ts.tv_nsec = (msec % 1000) * 1000000;

    do {
        res = nanosleep(&ts, &ts);
    } while (res && errno == EINTR);

    return res;
}

char *
ltrim(char *s)
{
    while (isspace(*s))
        s++;
    return s;
}

char *
rtrim(char *s)
{
    char *back = s + strlen(s);
    while (isspace(*--back))
        ;
    *(back + 1) = '\0';
    return s;
}

char *
trim(char *s)
{
    return rtrim(ltrim(s));
}

ptr_wrapper_t *
wrap_ptr(void *ptr)
{
    ptr_wrapper_t *wrapper = malloc(sizeof(ptr_wrapper_t));
    wrapper->ptr = ptr;
    return wrapper;
}

void *
unwrap(ptr_wrapper_t *wrapper)
{
    if (wrapper == NULL)
        return NULL;

    return wrapper->ptr;
}