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minishell.c
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minishell.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* minishell.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: bsyvasal <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/01/25 18:40:25 by vshchuki #+# #+# */
/* Updated: 2024/03/01 11:29:41 by bsyvasal ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
static void run_command(char *line, t_pipe *data)
{
int count;
count = replace_pipes(line);
if (count == -1)
{
free(line);
msg_freeall_exit("syntax error: unexpected end of file", NULL, 2, data);
}
data->cmds = ft_split(line, 31);
free(line);
if (!data->cmds)
msg_freeall_exit("malloc error", NULL, 1, data);
data->cmdc = sizeof_arraylist(data->cmds);
if (count + 1 != data->cmdc)
msg_freeall_exit("syntax error: unexpected end of file", NULL, 2, data);
data->exit_status = pipex(data);
freeall(data->cmds);
}
/**
* @return -2 if memory allocating function failed
*/
static void minishell_command(char *argv[], t_pipe *data)
{
char *line;
line = ft_strdup(argv[2]);
if (!line)
{
data->exit_status = -2;
return ;
}
run_command(line, data);
}
static void minishell_files(char *argv[], t_pipe *data)
{
char *line;
data->fd[0] = open(argv[1], O_RDONLY);
if (data->fd[0] < 0)
errormsg_exit(argv[1], -1, data);
line = get_next_line(data->fd[0]);
while (data->exit_status != -2 && line)
{
if (line[ft_strlen(line) - 1] == '\n')
line[ft_strlen(line) - 1] = 0;
run_command(line, data);
if (data->exit_status != -2)
line = get_next_line(data->fd[0]);
}
close(data->fd[0]);
}
static void initialize(t_pipe *data, char **envp)
{
struct termios new_attr;
tcgetattr(STDIN_FILENO, &new_attr);
new_attr.c_lflag &= ~ECHOCTL;
tcsetattr(STDIN_FILENO, TCSANOW, &new_attr);
data->exit_status = 0;
data->fd[0] = -1;
data->fd[1] = -1;
data->cmds = NULL;
data->pid = NULL;
data->envp = NULL;
data->history_path = ft_strdup("/tmp/.bvsh_history");
if (!data->history_path)
msg_freeall_exit("malloc error", NULL, 1, data);
data->envp = copy_arraylist(envp, 0);
if (!data->envp)
msg_freeall_exit("malloc error", NULL, 1, data);
unset_var(data, "OLDPWD");
if (getenv("PATH") == NULL)
if (export(data, ft_strjoin("PATH=", PATH)) == -2)
msg_freeall_exit("malloc error", NULL, 1, data);
if (shlvl_increment(data) == -2)
msg_freeall_exit("malloc error", NULL, 1, data);
}
int main(int argc, char *argv[], char *envp[])
{
t_pipe data;
initialize(&data, envp);
if (argc < 2)
minishell_prompt(&data);
else if (ft_strnstr(argv[1], "-c", 2))
minishell_command(argv, &data);
else
minishell_files(argv, &data);
free(data.history_path);
freeall(data.envp);
if (data.exit_status == -2)
ft_putstr_fd("bvsh: malloc error\n", 2);
if (data.exit_status < 0)
return (EXIT_FAILURE);
if (g_last_signal)
return (1);
return (data.exit_status);
}