c10 tail stuff, c11 start, c12/c13 files

1 files changed, 85 insertions, 0 deletions

diff --git a/c10/ex02/file.c b/c10/ex02/file.c
new file mode 100644
index 0000000..e7f0d29
--- /dev/null
+++ b/c10/ex02/file.c
@@ -0,0 +1,85 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   file.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <charles.cabergs@gmail.com>       +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/07/17 09:04:03 by cacharle          #+#    #+#             */
+/*   Updated: 2019/07/17 15:49:06 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include "include.h"
+
+int	print_tail(char *filename, int tail_size)
+{
+	char	*file;
+	int		fildes;
+	int		file_len;
+
+	if ((fildes = open(filename, O_RDONLY)) == -1)
+	{
+		close(fildes);
+		return (-1);
+	}
+	file = NULL;
+	if ((file_len = read_file(fildes, &file)) == -1)
+		return (-1);
+	/*printf("%s \n %d", file + 29000, ft_strlen(file));*/
+	/*for (int i = 0; i < 100; i++)*/
+		/*printf("%c", file[i]);*/
+	if (write(STDOUT_FILENO, &file[file_len - tail_size], tail_size) == -1)
+		return (-1);
+	free(file);
+	if (close(fildes) == -1)
+		return (-1);
+	return (0);
+}
+
+int	read_file(int fildes, char **file)
+{
+	size_t	size;
+	size_t	read_size;
+	int	file_len;
+
+	/**file = malloc(sizeof(char) * 100);*/
+	file_len = 0;
+	size = BUF_SIZE;
+	read_size = BUF_SIZE;
+	while (!(read_size < BUF_SIZE))
+	{
+		/*printf("size %d\n", size);*/
+		*file = char_realloc(*file, size);
+		read_size = read(fildes, *file, BUF_SIZE);
+		/*printf("%s", *file);*/
+		if (read_size < BUF_SIZE)
+			file_len += ft_strlen(*file + BUF_SIZE - read_size);
+		else
+			file_len += BUF_SIZE;
+		size += BUF_SIZE;
+		/*size *= 2;*/
+	}
+	printf("file_len %d\n", file_len);
+	return (file_len);
+}
+
+char	*char_realloc(char *ptr, int size)
+{
+	int		i;
+	char	*reallocated_ptr;
+
+	reallocated_ptr = (char*)malloc(sizeof(char) * size);
+	i = 0;
+	while (i < size - BUF_SIZE)
+	{
+	reallocated_ptr[i] = ptr[i];
+	i++;
+	}
+	reallocated_ptr[i] = '\0';
+	free(ptr);
+	return (reallocated_ptr);
+}