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/*
* Copyright 2024 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* Copyright (c) 2014, Vsevolod Stakhov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LUA_UCL_H_
#define LUA_UCL_H_
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ucl.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Include C++ guard as Lua headers miss one */
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
/**
* Closure structure for lua function storing inside UCL
*/
struct ucl_lua_funcdata {
lua_State *L;
int idx;
char *ret;
};
/**
* Initialize lua UCL API
*/
UCL_EXTERN int luaopen_ucl(lua_State *L);
/**
* Import UCL object from lua state
* @param L lua state
* @param idx index of object at the lua stack to convert to UCL
* @return new UCL object or NULL, the caller should unref object after using
*/
UCL_EXTERN ucl_object_t *ucl_object_lua_import(lua_State *L, int idx);
/**
* Import UCL object from lua state, escaping JSON strings
* @param L lua state
* @param idx index of object at the lua stack to convert to UCL
* @return new UCL object or NULL, the caller should unref object after using
*/
UCL_EXTERN ucl_object_t *ucl_object_lua_import_escape(lua_State *L, int idx);
/**
* Push an object to lua
* @param L lua state
* @param obj object to push
* @param allow_array traverse over implicit arrays
*/
UCL_EXTERN int ucl_object_push_lua(lua_State *L,
const ucl_object_t *obj, bool allow_array);
/**
* Push an object to lua as userdata object (handling one refcount)
* @param L
* @param obj
*/
UCL_EXTERN void ucl_object_push_lua_unwrapped(lua_State *L, const ucl_object_t *obj);
/**
* Push an object to lua replacing all ucl.null with `false`
* @param L lua state
* @param obj object to push
* @param allow_array traverse over implicit arrays
*/
UCL_EXTERN int ucl_object_push_lua_filter_nil(lua_State *L,
const ucl_object_t *obj,
bool allow_array);
UCL_EXTERN struct ucl_lua_funcdata *ucl_object_toclosure(const ucl_object_t *obj);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* LUA_UCL_H_ */
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