input.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   input.c                                            :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: baelgadi <baelgadi@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/02/17 17:49:28 by zotaj-di          #+#    #+#             */
/*   Updated: 2026/03/04 03:52:58 by baelgadi         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "minishell_ui.h"
 
int read_key(void)
{
    char    c;
    char    seq[3];
 
    if (read(STDIN_FILENO, &c, 1) != 1)
        return (-1);
    if (c == KEY_ESC)
    {
        if (read(STDIN_FILENO, &seq[0], 1) != 1)
            return (KEY_ESC);
        if (read(STDIN_FILENO, &seq[1], 1) != 1)
            return (KEY_ESC);
        if (seq[0] == '[')
        {
            if (seq[1] == 'A')
                return (KEY_UP);
            else if (seq[1] == 'B')
                return (KEY_DOWN);
            else if (seq[1] == 'C')
                return (KEY_RIGHT);
            else if (seq[1] == 'D')
                return (KEY_LEFT);
        }
        return (KEY_ESC);
    }
    return (c);
}
 
void    cmd_add_char(t_cmd *cmd, char c)
{
    if (cmd->len < MAX_CMD_LEN - 1)
    {
        cmd->buf[cmd->len] = c;
        cmd->len++;
        cmd->buf[cmd->len] = '\0';
    }
}
 
void    cmd_del_char(t_cmd *cmd)
{
    if (cmd->len > 0)
    {
        cmd->len--;
        cmd->buf[cmd->len] = '\0';
    }
}
 
static void handle_scroll(t_ui *ui, int key)
{
    if (key == KEY_UP && ui->out.scroll > 0)
    {
        ui->out.scroll--;
        redraw_output_only(ui);
    }
    else if (key == KEY_DOWN && ui->out.scroll < ui->out.count - 10)
    {
        ui->out.scroll++;
        redraw_output_only(ui);
    }
}
 
void    handle_key(t_shell *shell, int key)
{
    t_ui    *ui;
 
    if (!shell || !shell->ui)
        return ;
    ui = shell->ui;
    if (key == KEY_ENTER)
        cmd_execute(shell);
    else if (key == KEY_BACKSPACE)
        cmd_del_char(&ui->cmd);
    else if (key == KEY_CTRL_D)
        ui->running = 0;
    else if (key == KEY_CTRL_C)
    {
        ft_memset(ui->cmd.buf, 0, MAX_CMD_LEN);
        ui->cmd.len = 0;
    }
    else if (key == KEY_UP || key == KEY_DOWN)
        handle_scroll(ui, key);
    else if (key >= 32 && key <= 126)
        cmd_add_char(&ui->cmd, (char)key);
}