42-Alcu/check_input.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   parsing.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: dgaillet <dgaillet@student.42lyon.fr>      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/03/28 13:01:37 by dgaillet          #+#    #+#             */
/*   Updated: 2026/03/28 13:01:38 by dgaillet         ###   ########lyon.fr   */
/*                                                                            */
/* ************************************************************************** */

#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>

#include "./libft/libft.h"

char *str_append(char *str, char *to_append) {
  char *new_str;
  int i;
  int j;

  if (!str)
    return to_append;
  new_str = malloc(sizeof(char) * (ft_strlen(str) + ft_strlen(to_append) + 1));
  if (!new_str)
    return NULL;
  i = -1;
  while (str[++i])
    new_str[i] = str[i];
  j = -1;
  while (to_append[++j])
    new_str[i + j] = to_append[j];
  new_str[i + j] = '\0';
  free(str);
  return (new_str);
}

char *read_file(int fd) {
  char *buf;
  int char_readed;
  char *content;

  content = NULL;
  buf = malloc(sizeof(char) * 2);
  if (!buf)
    return (NULL);
  buf[1] = '\0';
  char_readed = read(fd, buf, 1);
  while (char_readed > 0) {
    str_append(content, buf);
    char_readed = read(fd, buf, 1);
  }
  free(buf);
  return (content);
}

void free_split(char **tab) {
  int i;

  i = 0;
  while (tab[i]) {
    free(tab[i]);
    i++;
  }
  free(tab);
}

int check_input(int fd) {
  char **content;
  int i;
  int j;

  content = ft_split(read_file(fd), '\n');
  if (!content)
    return (-2);
  i = -1;
  while (content[++i]) {
    j = -1;
    while (content[i][++j]) {
      if (content[i][j] >= '0' && content[i][j] <= '9') {
        free_split(content);
        return (-1);
      }
    }
  }
  free_split(content);
  return (i);
}