put_error_msg.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   put_error_msg.c                                    :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: hnagasak <hnagasak@student.42tokyo.jp>     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/11/15 00:42:41 by kamitsui          #+#    #+#             */
/*   Updated: 2024/12/29 18:18:03 by kamitsui         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "cub3d.h"
 
static bool is_entry_char(const char c)
{
    return (c != ' ' && c != '\0' && c != '\n');
}
 
void    put_error_msg(const char *entry, const char *msg)
{
    size_t  len;
    ssize_t result;
 
    ft_eprintf("%s", ERR_PROMPT);
    len = 0;
    while (is_entry_char(entry[len]) == true)
        len++;
    result = write(STDERR_FILENO, entry, len);
    if (result == -1)
    {
        perror("write failed");
        exit(EXIT_FAILURE);
    }
    else if ((size_t)result != len)
    {
        ft_eprintf("Partial write. Only %lu bytes out of %lu were written.\n",
            (size_t)result, len);
        exit(EXIT_FAILURE);
    }
    ft_eprintf(": %s\n", msg);
}