1/* Copyright (c) 2014, Vsevolod Stakhov
2 * All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *       * Redistributions of source code must retain the above copyright
7 *         notice, this list of conditions and the following disclaimer.
8 *       * Redistributions in binary form must reproduce the above copyright
9 *         notice, this list of conditions and the following disclaimer in the
10 *         documentation and/or other materials provided with the distribution.
11 *
12 * THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
13 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
14 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
15 * DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
16 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
17 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
18 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
19 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
21 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 */
23#ifndef LUA_UCL_H_
24#define LUA_UCL_H_
25
26#ifdef HAVE_CONFIG_H
27#include "config.h"
28#endif
29
30#include <lua.h>
31#include <lauxlib.h>
32#include <lualib.h>
33#include "ucl.h"
34
35/**
36 * Closure structure for lua function storing inside UCL
37 */
38struct ucl_lua_funcdata {
39	lua_State *L;
40	int idx;
41	char *ret;
42};
43
44/**
45 * Initialize lua UCL API
46 */
47UCL_EXTERN int luaopen_ucl (lua_State *L);
48
49/**
50 * Import UCL object from lua state
51 * @param L lua state
52 * @param idx index of object at the lua stack to convert to UCL
53 * @return new UCL object or NULL, the caller should unref object after using
54 */
55UCL_EXTERN ucl_object_t* ucl_object_lua_import (lua_State *L, int idx);
56
57/**
58 * Import UCL object from lua state, escaping JSON strings
59 * @param L lua state
60 * @param idx index of object at the lua stack to convert to UCL
61 * @return new UCL object or NULL, the caller should unref object after using
62 */
63UCL_EXTERN ucl_object_t* ucl_object_lua_import_escape (lua_State *L, int idx);
64
65/**
66 * Push an object to lua
67 * @param L lua state
68 * @param obj object to push
69 * @param allow_array traverse over implicit arrays
70 */
71UCL_EXTERN int ucl_object_push_lua (lua_State *L,
72		const ucl_object_t *obj, bool allow_array);
73/**
74 * Push an object to lua replacing all ucl.null with `false`
75 * @param L lua state
76 * @param obj object to push
77 * @param allow_array traverse over implicit arrays
78 */
79UCL_EXTERN int ucl_object_push_lua_filter_nil (lua_State *L,
80											   const ucl_object_t *obj,
81											   bool allow_array);
82
83UCL_EXTERN struct ucl_lua_funcdata* ucl_object_toclosure (const ucl_object_t *obj);
84
85#endif /* LUA_UCL_H_ */
86