Function initializeInput

src/bin/psql/input.c:345–395

* Put any startup stuff related to input in here. It's good to maintain * abstraction this way. * * The only "flag" right now is 1 for use readline & history. */

 * The only "flag" right now is 1 for use readline & history.
 */
void
initializeInput(int flags)
{
#ifdef USE_READLINE
	if (flags & 1)
	{
		const char *histfile;
		char		home[MAXPGPATH];

		useReadline = true;

		/* these two things must be done in this order: */
		initialize_readline();
		rl_initialize();

		useHistory = true;
		using_history();
		history_lines_added = 0;

		histfile = GetVariable(pset.vars, "HISTFILE");

		if (histfile == NULL)
		{
			char	   *envhist;

			envhist = getenv("PSQL_HISTORY");
			if (envhist != NULL && strlen(envhist) > 0)
				histfile = envhist;
		}

		if (histfile == NULL)
		{
			if (get_home_path(home))
				psql_history = psprintf("%s/%s", home, PSQLHISTORY);
		}
		else
		{
			psql_history = pg_strdup(histfile);
			expand_tilde(&psql_history);
		}

		if (psql_history)
		{
			read_history(psql_history);
			decode_history();
		}
	}
#endif

	atexit(finishInput);
}


/*