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77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
/*
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Copyright (C) 2019 The Falco Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "falco_common.h"
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std::vector<std::string> falco_common::priority_names = {
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"Emergency",
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"Alert",
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"Critical",
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"Error",
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"Warning",
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"Notice",
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"Informational",
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"Debug"};
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falco_common::falco_common()
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{
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m_ls = lua_open();
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if(!m_ls)
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{
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throw falco_exception("Cannot open lua");
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}
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luaL_openlibs(m_ls);
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}
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falco_common::~falco_common()
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{
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if(m_ls)
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{
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lua_close(m_ls);
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}
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}
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void falco_common::init()
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{
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// Strings in the list lua_module_strings need to be loaded as
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// lua modules, which also involves adding them to the
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// package.module table.
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for(const auto &pair : lua_module_strings)
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{
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lua_getglobal(m_ls, "package");
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lua_getfield(m_ls, -1, "preload");
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if(luaL_loadstring(m_ls, pair.first))
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{
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throw falco_exception("Failed to load embedded lua code " +
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string(pair.second) + ": " + lua_tostring(m_ls, -1));
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}
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lua_setfield(m_ls, -2, pair.second);
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}
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// Strings in the list lua_code_strings need to be loaded and
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// evaluated so any public functions can be directly called.
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for(const auto &str : lua_code_strings)
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{
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if(luaL_loadstring(m_ls, str) || lua_pcall(m_ls, 0, 0, 0))
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{
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throw falco_exception("Failed to load + evaluate embedded lua code " +
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string(str) + ": " + lua_tostring(m_ls, -1));
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}
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}
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}
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