42_minishell/parse/parse.c

#include "./parse_private.h"

static int	ft_redirection_parse(t_data *data, char *cmd_str, t_cmd *cmd)
{
	int		fd_in;
	int		fd_out;

	fd_in = ft_infile(data, cmd_str);
	if (fd_in == -2)
		return (1);
	fd_out = ft_outfile(data, cmd_str);
	if (fd_out == -2)
	{
		close(fd_in);
		return (1);
	}
	cmd->fd_in[0] = fd_in;
	cmd->fd_in[1] = -1;
	cmd->fd_out[0] = fd_out;
	cmd->fd_out[1] = -1;
	return (0);
}

int	ft_args_parse(t_data *data, char *cmd_str, t_cmd *cmd)
{
	char	**tab;
	char	*str;
	size_t	i;

	tab = ft_split_quoted(cmd_str, ' ');
	if (tab == NULL)
		return (1);
	i = 0;
	while (tab[i] != NULL)
	{
		str = ft_env_filler(data, tab[i]);
		if (str == NULL)
		{
			ft_freer_tab_ultimate(1, tab);
			return (1);
		}
		free(tab[i]);
		tab[i] = str;
		i++;
	}
	cmd->args = tab;
	return (0);
}

int	ft_executable_parse(t_data *data, t_cmd *cmd)
{
	bool	own;
	char	*path;

	path = cmd->args[0];
	own = 0;
	if (ft_strcmp(cmd->args[0], "env") == 0)
		own = 1;
	else if (ft_strcmp(cmd->args[0], "export") == 0)
		own = 1;
	else if (ft_strcmp(cmd->args[0], "echo") == 0)
		own = 1;
	else if (ft_strcmp(cmd->args[0], "unset") == 0)
		own = 1;
	else if (ft_strcmp(cmd->args[0], "exit") == 0)
		own = 1;
	else if (ft_strcmp(cmd->args[0], "pwd") == 0)
		own = 1;
	else if (ft_strcmp(cmd->args[0], "cd") == 0)
		own = 1;
	if (own == 0)
		path = ft_get_executable(data->env, cmd->args[0]);
	cmd->own_cmd = own;
	cmd->executable = path;
	return (own);
}

int	ft_cmd_parser(t_data *data, char *cmd_str)
{
	t_cmd	*cmd;
	t_list	*element;

	cmd = ft_calloc(sizeof(t_cmd), 1);
	if (cmd == NULL)
	{
		ft_eprintf("minishell: malloc failed\n");
		return (1);
	}
	if (ft_redirection_parse(data, cmd_str, cmd))
		return (1);
	if (ft_args_parse(data, cmd_str, cmd))
	{
		ft_cmddel(cmd);
		return (1);
	}
	ft_executable_parse(data, cmd);
	element = ft_lstnew(cmd);
	if (element == NULL)
	{
		ft_cmddel(cmd);
		return (1);
	}
	ft_lstadd_back(data->cmds, element);
	return (0);
}

int	ft_cmds_parser(t_data *data, const char *line)
{
	char	**tab;
	size_t	i;

	tab = ft_split_quoted(line, '|');
	if (tab == NULL)
	{
		ft_eprintf("minishell: malloc failed\n");
		return (1);
	}
	i = 0;
	while (tab[i] != NULL)
	{
		ft_cmd_parser(data, tab[i]);
		i++;
	}
	ft_add_fd(((t_cmd *) (*data->cmds)->content)->fd_in, 0);
	ft_add_fd(((t_cmd *) ((ft_lstlast(*data->cmds))->content))->fd_out, 1);
	ft_freer_tab_ultimate(1, tab);
	return (0);
}