int simple_left(t_cmd *cmd, t_list *list, char **env, int builtin)
{
t_red var;
int fd;
int reset;
(void)builtin;
init_simpleleft(cmd, &var);
if (!(cmd->go_on))
return (FAILURE);
if (cmd->prev && cmd->prev->token == PIPE)
return (FAILURE + 0 * fprintf(stderr, "Ambiguous output redirect.\n"));
var.is_builtin = builtin;
if ((fd = open(var.name, O_RDONLY)) == -1)
return (fprintf(stderr, "%s: %s\n",
var.name, strerror(errno)) * 0 + FAILURE);
if (!var.cmd[0])
return (SUCCESS);
reset = dup(0);
dup2(fd, 0);
if (exec_left(list, env, cmd) == FAILURE)
check_go_on(cmd);
dup2(reset, 0);
close(fd);
xfree(var.name);
free_tab(var.cmd);
return (SUCCESS);
}
t_bool exec_pipe(t_lexem *node, t_shell *shell)
{
pid_t pid;
int pipefd[2];
if (!(node->left) || !(node->right))
return ((node->is_pipe) ? (TRUE) : (CONTINUE));
if (pipe(pipefd) != EXIT_SUCCESS)
return (FALSE);
node->right->fd[STDIN_FILENO] = pipefd[0];
node->left->fd[STDOUT_FILENO] = pipefd[1];
node->left->fd[STDERR_FILENO] = (node->type == PIPE_ERR)
? (pipefd[1]) : (STDERR_FILENO);
if ((pid = fork()) == -1)
return (FALSE);
return ((pid == 0) ? (exec_left(node, shell, pipefd))
: (exec_right(node, shell, pipefd)));
}
