102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* get_next_line.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: abelghou <abelghou@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/07/17 21:31:24 by abelghou #+# #+# */
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/* Updated: 2024/07/24 18:17:55 by abelghou ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../include/get_next_line.h"
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static char *sort_and_store(int fd, char *buf, char *backup)
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{
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int read_line;
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char *char_temp;
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read_line = 1;
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while (read_line != 0)
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{
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read_line = read(fd, buf, BUFFER_SIZE);
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if (read_line == -1)
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return (0);
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else if (read_line == 0)
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break ;
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buf[read_line] = '\0';
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if (!backup)
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backup = ft_strdup_g("");
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if (!backup)
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return (NULL);
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char_temp = backup;
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backup = ft_strjoin(char_temp, buf);
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free(char_temp);
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char_temp = NULL;
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if (ft_strchr_gnl (buf, '\n'))
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break ;
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}
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return (backup);
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}
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static char *extract(char *line)
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{
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size_t count;
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char *backup;
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count = 0;
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while (line[count] != '\n' && line[count] != '\0')
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count++;
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if (line[count] == '\0' || line[1] == '\0')
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return (0);
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backup = ft_substr(line, count + 1, ft_strlen_g(line) - count);
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if (!backup)
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return (NULL);
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if (*backup == '\0')
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{
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free (backup);
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backup = NULL;
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}
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line[count + 1] = '\0';
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return (backup);
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}
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char *get_next_line(int fd)
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{
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char *line;
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char *buf;
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char *temp;
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static char *backup;
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if (fd < 0 || BUFFER_SIZE <= 0)
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return (free(backup), backup = NULL, NULL);
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buf = (char *)malloc(sizeof(char) * (BUFFER_SIZE + 1));
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if (!buf)
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return (free(backup), backup = NULL, NULL);
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line = sort_and_store(fd, buf, backup);
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free(buf);
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buf = NULL;
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if (!line)
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return (free(backup), backup = NULL, NULL);
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backup = extract(line);
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temp = ft_strdup_g(line);
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free(line);
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if (!temp)
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return (free(backup), backup = NULL, NULL);
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return (temp);
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}
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// int main()
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// {
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// int fd;
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// char *line;
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// fd = open("fd.txt", O_RDONLY);
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// while((line = get_next_line(fd)) != NULL)
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// {
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// printf("%s", line);
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// free(line);
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// }
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// line = get_next_line(fd);
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// close(fd);
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// }
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