/// Execute a builtin command
proc_status_t builtin_run(parser_t &parser, int job_pgid, wchar_t **argv, io_streams_t &streams) {
UNUSED(parser);
UNUSED(streams);
if (argv == NULL || argv[0] == NULL) return proc_status_t::from_exit_code(STATUS_INVALID_ARGS);
// We can be handed a keyword by the parser as if it was a command. This happens when the user
// follows the keyword by `-h` or `--help`. Since it isn't really a builtin command we need to
// handle displaying help for it here.
if (argv[1] && !argv[2] && parse_util_argument_is_help(argv[1]) && cmd_needs_help(argv[0])) {
builtin_print_help(parser, streams, argv[0], streams.out);
return proc_status_t::from_exit_code(STATUS_CMD_OK);
}
if (const builtin_data_t *data = builtin_lookup(argv[0])) {
// If we are interactive, save the foreground pgroup and restore it after in case the
// builtin needs to read from the terminal. See #4540.
bool grab_tty = is_interactive_session && isatty(streams.stdin_fd);
pid_t pgroup_to_restore = grab_tty ? terminal_acquire_before_builtin(job_pgid) : -1;
int ret = data->func(parser, streams, argv);
if (pgroup_to_restore >= 0) {
tcsetpgrp(STDIN_FILENO, pgroup_to_restore);
}
return proc_status_t::from_exit_code(ret);
}
debug(0, UNKNOWN_BUILTIN_ERR_MSG, argv[0]);
return proc_status_t::from_exit_code(STATUS_CMD_ERROR);
}
// Check if the first argument under the given node is --help
static bool first_argument_is_help(const parse_node_tree_t &node_tree, const parse_node_t &node, const wcstring &src)
{
bool is_help = false;
const parse_node_tree_t::parse_node_list_t arg_nodes = node_tree.find_nodes(node, symbol_argument, 1);
if (! arg_nodes.empty())
{
// Check the first argument only
const parse_node_t &arg = *arg_nodes.at(0);
const wcstring first_arg_src = arg.get_source(src);
is_help = parse_util_argument_is_help(first_arg_src.c_str(), 3);
}
return is_help;
}
