drawing_text.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   drawing_text.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: baelgadi <baelgadi@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/02/17 17:49:05 by zotaj-di          #+#    #+#             */
/*   Updated: 2026/03/04 03:31:20 by baelgadi         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "minishell_ui.h"
 
static int  utf8_byte_len(unsigned char c)
{
    if (c >= 0xF0)
        return (4);
    if (c >= 0xE0)
        return (3);
    if (c >= 0xC0)
        return (2);
    return (1);
}
 
char    *truncate_line(const char *line, int max_width)
{
    static char buf[BUF_SIZE];
    int         i;
    int         visual_w;
    int         char_len;
 
    if (!line)
        return ("");
    ft_memset(buf, 0, sizeof(buf));
    i = 0;
    visual_w = 0;
    while (line[i] && visual_w < max_width)
    {
        char_len = utf8_byte_len((unsigned char)line[i]);
        if (i + char_len > BUF_SIZE - 1)
            break ;
        ft_memcpy(buf + i, line + i, char_len);
        i += char_len;
        visual_w++;
    }
    buf[i] = '\0';
    return (buf);
}
 
int visual_strlen(const char *s)
{
    int len;
 
    len = 0;
    while (*s)
    {
        if ((unsigned char)*s >= 0xF0)
            len += 2;
        else
            len++;
        s += utf8_byte_len((unsigned char)*s);
    }
    return (len);
}