Firstcommit

gnl/srcs/get_next_line.c

@@ -0,0 +1,102 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: abelghou <[email protected]>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/17 21:31:24 by abelghou          #+#    #+#             */
+/*   Updated: 2024/07/24 18:17:55 by abelghou         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../include/get_next_line.h"
+
+static char	*sort_and_store(int fd, char *buf, char *backup)
+{
+	int		read_line;
+	char	*char_temp;
+
+	read_line = 1;
+	while (read_line != 0)
+	{
+		read_line = read(fd, buf, BUFFER_SIZE);
+		if (read_line == -1)
+			return (0);
+		else if (read_line == 0)
+			break ;
+		buf[read_line] = '\0';
+		if (!backup)
+			backup = ft_strdup_g("");
+		if (!backup)
+			return (NULL);
+		char_temp = backup;
+		backup = ft_strjoin(char_temp, buf);
+		free(char_temp);
+		char_temp = NULL;
+		if (ft_strchr_gnl (buf, '\n'))
+			break ;
+	}
+	return (backup);
+}
+
+static char	*extract(char *line)
+{
+	size_t	count;
+	char	*backup;
+
+	count = 0;
+	while (line[count] != '\n' && line[count] != '\0')
+		count++;
+	if (line[count] == '\0' || line[1] == '\0')
+		return (0);
+	backup = ft_substr(line, count + 1, ft_strlen_g(line) - count);
+	if (!backup)
+		return (NULL);
+	if (*backup == '\0')
+	{
+		free (backup);
+		backup = NULL;
+	}
+	line[count + 1] = '\0';
+	return (backup);
+}
+
+char	*get_next_line(int fd)
+{
+	char		*line;
+	char		*buf;
+	char		*temp;
+	static char	*backup;
+
+	if (fd < 0 || BUFFER_SIZE <= 0)
+		return (free(backup), backup = NULL, NULL);
+	buf = (char *)malloc(sizeof(char) * (BUFFER_SIZE + 1));
+	if (!buf)
+		return (free(backup), backup = NULL, NULL);
+	line = sort_and_store(fd, buf, backup);
+	free(buf);
+	buf = NULL;
+	if (!line)
+		return (free(backup), backup = NULL, NULL);
+	backup = extract(line);
+	temp = ft_strdup_g(line);
+	free(line);
+	if (!temp)
+		return (free(backup), backup = NULL, NULL);
+	return (temp);
+}
+
+// int main()
+// {
+// 	int fd;
+// 	char *line;
+// 	fd = open("fd.txt", O_RDONLY);
+// 	while((line = get_next_line(fd)) != NULL)
+// 	{
+// 		printf("%s", line);
+// 		free(line);
+// 	}
+// 	line = get_next_line(fd);
+// 	close(fd);
+// }

gnl/srcs/get_next_line_utils.c

@@ -0,0 +1,106 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line_utils.c                              :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: abelghou <[email protected]>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/07/21 19:34:18 by abelghou          #+#    #+#             */
+/*   Updated: 2024/07/23 20:06:41 by abelghou         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../include/get_next_line.h"
+
+char	*ft_substr(char const *s, unsigned int start, size_t len)
+{
+	size_t	i;
+	size_t	j;
+	char	*str;
+
+	str = (char *)malloc(sizeof(*s) * (len + 1));
+	if (str == 0)
+		return (NULL);
+	i = 0;
+	j = 0;
+	while (s[i])
+	{
+		if (i >= start && j < len)
+		{
+			str[j] = s[i];
+			j++;
+		}
+		i++;
+	}
+	str[j] = '\0';
+	return (str);
+}
+
+int	ft_strlen_g(const char *str)
+{
+	int	i;
+
+	i = 0;
+	while (str[i])
+		i++;
+	return (i);
+}
+
+char	*ft_strchr_gnl(const char *s, int i)
+{
+	while (*s)
+	{
+		if (*s == i)
+			return ((char *)s);
+		s++;
+	}
+	if (i == '\0')
+		return ((char *)s);
+	return (0);
+}
+
+char	*ft_strdup_g(const char *s)
+{
+	int		i;
+	int		j;
+	char	*str;
+
+	i = 0;
+	j = ft_strlen_g(s);
+	str = (char *)malloc(sizeof(*str) * (j + 1));
+	if (!str)
+		return (NULL);
+	while (i < j)
+	{
+		str[i] = s[i];
+		i++;
+	}
+	str[i] = '\0';
+	return (str);
+}
+
+char	*ft_strjoin(char const *s1, char const *s2)
+{
+	int		i;
+	int		j;
+	char	*str;
+
+	i = 0;
+	j = 0;
+	str = (char *)malloc(sizeof(char) * (ft_strlen_g(s1) \
+		+ ft_strlen_g(s2) + 1));
+	if (str == NULL)
+		return (NULL);
+	while (s1[i] != '\0')
+	{
+		str[i] = s1[i];
+		i++;
+	}
+	while (s2[j] != '\0')
+	{
+		str[i + j] = s2[j];
+		j++;
+	}
+	str[i + j] = '\0';
+	return (str);
+}