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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* env_utils.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dkaiser <dkaiser@student.42heilbronn.de +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/05/02 16:19:31 by dkaiser #+# #+# */
/* Updated: 2024/05/07 16:36:32 by dkaiser ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
#include "pipex.h"
char **get_split_path(char *envp[])
{
char *path;
while (!ft_strnstr(*envp, "PATH=", 5))
envp++;
if (!*envp)
return (NULL);
path = *envp + 5;
return (ft_split(path, ':'));
}
char *get_pwd(char *envp[])
{
while (!ft_strnstr(*envp, "PWD=", 4))
envp++;
if (!*envp)
return (NULL);
return (*envp + 4);
}
char *find_in_path(char *cmd, char **path)
{
char *cur_path;
char *cmd_path;
cmd_path = NULL;
while (*path)
{
if (cmd_path)
free(cmd_path);
cur_path = ft_strjoin(*path, "/");
if (!cur_path)
return (NULL);
cmd_path = ft_strjoin(cur_path, cmd);
free(cur_path);
if (!cmd_path)
return (NULL);
if (access(cmd_path, X_OK) != -1)
return (cmd_path);
path++;
}
return (NULL);
}
char *get_cmd_path(char *cmd, char **path, char *pwd)
{
char *cur_dir;
char *lone_cmd;
int len;
char *res;
if (cmd[0] == '/')
return (cmd);
// TODO: Maybe use duplicate instead, so there will be no problem on free()
else if (ft_strchr(cmd, '/'))
{
cur_dir = ft_strjoin(pwd, "/");
// TODO: Free on fail
// TODO: Maybe check if executable, else there might be a problem...
return (ft_strjoin(cur_dir, cmd));
}
else if (ft_strchr(cmd, ' '))
{
len = ft_strchr(cmd, ' ') - cmd + 1;
lone_cmd = malloc(len * sizeof(char));
// TODO: Free on fail
ft_strlcpy(lone_cmd, cmd, len);
res = find_in_path(lone_cmd, path);
if (!res)
return (NULL);
return (ft_strjoin(res, ft_strchr(cmd, ' ')));
}
else
{
return (find_in_path(cmd, path));
}
}
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