/*-
 * Copyright (c) 2014-2018 MongoDB, Inc.
 * Copyright (c) 2008-2014 WiredTiger, Inc.
 *	All rights reserved.
 *
 * See the file LICENSE for redistribution information.
 */

#include "wt_internal.h"

/*
 * __wt_ext_config_get --
 *	Given a NULL-terminated list of configuration strings, find the final
 *	value for a given string key (external API version).
 */
int
__wt_ext_config_get(WT_EXTENSION_API *wt_api,
    WT_SESSION *wt_session, WT_CONFIG_ARG *cfg_arg, const char *key,
    WT_CONFIG_ITEM *cval)
{
	WT_CONNECTION_IMPL *conn;
	WT_SESSION_IMPL *session;
	const char **cfg;

	conn = (WT_CONNECTION_IMPL *)wt_api->conn;
	if ((session = (WT_SESSION_IMPL *)wt_session) == NULL)
		session = conn->default_session;

	if ((cfg = (const char **)cfg_arg) == NULL)
		return (WT_NOTFOUND);
	return (__wt_config_gets(session, cfg, key, cval));
}

/*
 * __wt_ext_config_get_string --
 *	Given a configuration string, find the value for a given string key
 *	(external API version).
 */
int
__wt_ext_config_get_string(WT_EXTENSION_API *wt_api,
    WT_SESSION *wt_session, const char *config, const char *key,
    WT_CONFIG_ITEM *cval)
{
	WT_CONNECTION_IMPL *conn;
	WT_SESSION_IMPL *session;

	conn = (WT_CONNECTION_IMPL *)wt_api->conn;
	if ((session = (WT_SESSION_IMPL *)wt_session) == NULL)
		session = conn->default_session;

	return (__wt_config_getones(session, config, key, cval));
}

/*
 * __wt_ext_config_parser_open --
 *	WT_EXTENSION_API->config_parser_open implementation
 */
int
__wt_ext_config_parser_open(WT_EXTENSION_API *wt_ext, WT_SESSION *wt_session,
    const char *config, size_t len, WT_CONFIG_PARSER **config_parserp)
{
	WT_UNUSED(wt_ext);
	return (wiredtiger_config_parser_open(
	    wt_session, config, len, config_parserp));
}

/*
 * __wt_ext_config_parser_open_arg --
 *	WT_EXTENSION_API->config_parser_open_arg implementation
 */
int
__wt_ext_config_parser_open_arg(WT_EXTENSION_API *wt_ext,
    WT_SESSION *wt_session, WT_CONFIG_ARG *cfg_arg,
    WT_CONFIG_PARSER **config_parserp)
{
	size_t len;
	const char **cfg, *p;

	WT_UNUSED(wt_ext);

	/* Find the last non-NULL entry in the configuration stack. */
	if ((cfg = (const char **)cfg_arg) == NULL || *cfg == NULL) {
		p = NULL;
		len = 0;
	} else {
		while (cfg[1] != NULL)
			++cfg;
		p = *cfg;
		len = strlen(p);
	}

	return (wiredtiger_config_parser_open(
	    wt_session, p, len, config_parserp));
}
