1 files changed, 106 insertions, 0 deletions
diff --git a/rush02/ex00/helper.c b/rush02/ex00/helper.c
new file mode 100644
index 0000000..e29eb47
--- /dev/null
+++ b/rush02/ex00/helper.c
@@ -0,0 +1,106 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   helper.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <cacharle@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/07/20 07:25:21 by cacharle          #+#    #+#             */
+/*   Updated: 2019/07/21 08:23:41 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include "include.h"
+
+/*
+** Read an already openned file in `file`
+** return the file_size (-1 if a error occurs)
+*/
+
+int		read_file(int fildes, char **file_ptr)
+{
+	char	buf[BUF_SIZE];
+	int		file_size;
+	int		read_size;
+
+	file_size = 0;
+	while ((read_size = read(fildes, buf, BUF_SIZE)))
+	{
+		if (read_size < 0)
+			return (-1);
+		*file_ptr = ft_memcat(*file_ptr, buf, file_size, read_size);
+		file_size += read_size;
+	}
+	return (file_size);
+}
+
+/*
+** Concatenate buf[buf_size] into file[file_size]
+** Create a copy of the file, free file,
+** reallocate it with sufficient memory for the concatenation
+** copy each character of file_copy then buf into file
+** free file_copy
+*/
+
+char	*ft_memcat(char *file, char buf[BUF_SIZE], int file_size,
+					int buf_size)
+{
+	int		i;
+	char	*file_copy;
+
+	if ((file_copy = malloc(sizeof(char) * (file_size + 1))) == NULL)
+		return (NULL);
+	i = -1;
+	while (++i < file_size)
+		file_copy[i] = file[i];
+	free(file);
+	if ((file = malloc(sizeof(char) * (file_size + buf_size + 1))) == NULL)
+		return (NULL);
+	i = 0;
+	while (i < file_size)
+	{
+		file[i] = file_copy[i];
+		i++;
+	}
+	free(file_copy);
+	while (i < file_size + buf_size)
+	{
+		file[i] = buf[i - file_size];
+		i++;
+	}
+	return (file);
+}
+
+char	*ft_strndup(char *src, int n)
+{
+	int		i;
+	char	*dup_ptr;
+
+	dup_ptr = (char*)malloc(sizeof(char) * (n + 1));
+	if (dup_ptr == NULL)
+		return (NULL);
+	i = 0;
+	while (src[i] && i < n)
+	{
+		dup_ptr[i] = src[i];
+		i++;
+	}
+	dup_ptr[i] = '\0';
+	return (dup_ptr);
+}
+
+/*
+** Print a string char by char on the standard output
+*/
+
+void	ft_putstr(char *str)
+{
+	while (*str)
+	{
+		write(1, str, 1);
+		str++;
+	}
+}