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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* built-in.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: mea <mea@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/01/06 09:02:57 by narnaud #+# #+# */
/* Updated: 2022/05/27 08:46:51 by narnaud ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
int is_builtin(char *cmd)
{
int cmd_len;
cmd_len = ft_strlen(cmd) + 1;
if (!ft_strncmp(cmd, "echo", ft_min(cmd_len, 5))
|| !ft_strncmp(cmd, "pwd", ft_min(cmd_len, 4))
|| !ft_strncmp(cmd, "cd", ft_min(cmd_len, 3))
|| !ft_strncmp(cmd, "export", ft_min(cmd_len, 7))
|| !ft_strncmp(cmd, "unset", ft_min(cmd_len, 6))
|| !ft_strncmp(cmd, "env", ft_min(cmd_len, 4))
|| !ft_strncmp(cmd, "exit", ft_min(cmd_len, 5)))
return (1);
else
return (0);
}
int ft_echo(t_command *cmd)
{
int no_nl;
int fd_out;
int i;
if (cmd->fd[1])
fd_out = cmd->fd[1];
else
fd_out = 1;
no_nl = 0;
i = 1;
while (cmd->argv[i])
{
if (ft_strncmp(cmd->argv[i], "-n", 2) == 0 && i++)
{
no_nl = 1;
continue ;
}
ft_putstr_fd(cmd->argv[i], fd_out);
if (cmd->argv[++i])
ft_putstr_fd(" ", fd_out);
}
if (!no_nl)
ft_putstr_fd("\n", fd_out);
return (0);
}
int ft_pwd(t_command *cmd)
{
char *dir;
int fd_out;
if (cmd->fd[1])
fd_out = cmd->fd[1];
else
fd_out = 1;
dir = ft_calloc(PATHS_MAX_SIZE, sizeof(char));
getcwd(dir, PATHS_MAX_SIZE);
ft_putstr_fd(dir, fd_out);
ft_putstr_fd("\n", fd_out);
free(dir);
return (0);
}
int ft_cd(t_datas *datas, t_command *cmd)
{
char *home;
if (cmd->argc > 2)
return (cmd_error("cd", "too many arguments\n", NULL));
if (cmd->argv[1])
{
if (access(cmd->argv[1], X_OK))
return (cmd_error(cmd->argv[0], cmd->argv[1],
": Permission denied\n"));
else if (access(cmd->argv[1], F_OK))
return (cmd_error(cmd->argv[0], cmd->argv[1],
": Not a directory\n"));
chdir(cmd->argv[1]);
return (0);
}
else
{
home = get_var_value(datas, "HOME", 5);
if (*home)
chdir(home);
else
return (cmd_error("cd", "HOME not set\n", NULL));
}
return (0);
}
int ft_exit(t_datas *datas, t_command *cmd)
{
if (cmd->argc == 1)
halt(datas, EXIT_SUCCESS, 0);
else if (cmd->argc == 2)
{
if (!ft_isnumber(cmd->argv[1]))
{
cmd_error("exit", "numeric argument required\n", NULL);
halt(datas, 2, 0);
}
halt(datas, ft_atoi(cmd->argv[1]) % 255, 0);
}
cmd_error("exit", "too many arguments\n", NULL);
return (EXIT_FAILURE);
}