121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* pipex_parsing.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: erey-bet <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/01/19 17:03:01 by erey-bet #+# #+# */
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/* Updated: 2023/03/23 17:04:19 by erey-bet ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "pipex.h"
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int parsing(char *argv[], t_data *data)
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{
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data->fd2 = open(argv[4], O_WRONLY | O_TRUNC | O_CREAT, 0644);
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if (data->fd2 < 0)
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return (print_error(0, argv[4]));
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data->fd1 = open(argv[1], O_RDONLY);
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if (data->fd1 < 0)
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print_error(0, argv[1]);
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data->cmd1 = get_command(argv[2]);
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if (!data->cmd1)
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print_error(2, argv[2]);
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data->cmd2 = get_command(argv[3]);
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if (!data->cmd2)
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{
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if (data->fd1 > 0)
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close(data->fd1);
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close(data->fd2);
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if (data->cmd1)
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free(data->cmd1);
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print_error(2, argv[3]);
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return (1);
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}
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data->flg1 = ft_split(argv[2], ' ');
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data->flg2 = ft_split(argv[3], ' ');
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return (0);
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}
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char *test_acces(char **s, char **cmd, char **path, int *y)
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{
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*s = ft_strjoin_free(*s, "/", 1);
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if (*s == NULL)
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return (NULL);
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*path = ft_strjoin_free(*s, *cmd, 1);
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if (*path == NULL)
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return (NULL);
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if (access(*path, X_OK) == 0)
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{
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free(*cmd);
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return (*path);
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}
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free(*path);
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*path = NULL;
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*y = 0;
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return (NULL);
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}
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char *cmd_exist(char **env, char **cmd, int y, char **s)
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{
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char *path;
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size_t i;
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size_t len;
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i = 4;
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len = ft_strlen(*env);
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while (i < len)
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{
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test_acces(s, cmd, &path, &y);
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if (path)
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return (path);
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*s = ft_calloc(ft_strlen(*env) + 1, 1);
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if (*s == NULL)
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return (NULL);
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while ((*env)[++i] != ':' && i < len)
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(*s)[y++] = (*env)[i];
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}
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free(*s);
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free(*cmd);
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return (NULL);
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}
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char *find_command(char **env, char *cmd)
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{
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char *s;
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int y;
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while (*env != NULL)
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{
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if (ft_strnstr(*env, "PATH=", 6))
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break ;
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env++;
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}
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if (ft_strlen(*env) == 0)
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env--;
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y = 0;
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s = ft_calloc(ft_strlen(*env) + 1, 1);
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if (s == NULL)
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return (NULL);
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return (cmd_exist(env, &cmd, y, &s));
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}
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int finds_commands(char *argv[], char **env, char **cmd1, char **cmd2)
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{
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if (*cmd1)
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{
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*cmd1 = find_command(env, *cmd1);
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if (*cmd1 == NULL)
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print_error(1, argv[2]);
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}
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*cmd2 = find_command(env, *cmd2);
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if (*cmd2 == NULL)
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{
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print_error(1, argv[3]);
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return (1);
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}
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return (0);
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}
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