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Diffstat (limited to 'libs/misc/include/misc/EnvVar.h')
-rw-r--r-- | libs/misc/include/misc/EnvVar.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/libs/misc/include/misc/EnvVar.h b/libs/misc/include/misc/EnvVar.h new file mode 100644 index 000000000..47206d4c0 --- /dev/null +++ b/libs/misc/include/misc/EnvVar.h @@ -0,0 +1,107 @@ +/* + * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved + * + * 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. + */ + +/** + * @file EnvVar.h + * @ingroup COM_AI_RUNTIME + * @brief This file contains nnfw::misc::EnvVar class + */ + +#ifndef __NNFW_MISC_ENV_VAR__ +#define __NNFW_MISC_ENV_VAR__ + +#include <algorithm> +#include <array> +#include <cstdlib> +#include <string> + +namespace nnfw +{ +namespace misc +{ +/** + * @brief Class to access environment variable + */ +class EnvVar +{ +public: + /** + * @brief Construct a new EnvVar object + * @param[in] key environment variable + */ + EnvVar(const std::string &key) + { + const char *value = std::getenv(key.c_str()); + if (value == nullptr) + { + // An empty string is considered as an empty value + _value = ""; + } + else + { + _value = value; + } + } + + /** + * @brief Get environment variable of string type + * @param[in] def Default value of environment variable + * @return Defaut value passed as a parameter when there is no environment variable, + * otherwise the value of environment variable passed into constructor + */ + std::string asString(const std::string &def) const + { + if (_value.empty()) + return def; + return _value; + } + + /** + * @brief Get environment variable of boolean type + * @param[in] def Default value of environment variable + * @return Defaut value passed as a parameter when there is no environment variable, + * otherwise the value of environment variable passed into constructor + */ + bool asBool(bool def) const + { + if (_value.empty()) + return def; + static const std::array<std::string, 5> false_list{"0", "OFF", "FALSE", "N", "NO"}; + auto false_found = std::find(false_list.begin(), false_list.end(), _value); + return (false_found == false_list.end()); + } + + /** + * @brief Get environment variable of int type + * @param[in] def Default value of environment variable + * @return Defaut value passed as a parameter when there is no environment variable, + * otherwise the value of environment variable passed into constructor + */ + int asInt(int def) const + { + if (_value.empty()) + return def; + return std::stoi(_value); + } + +private: + std::string _value; +}; + +} // namespace misc +} // namespace nnfw + +#endif // __NNFW_MISC_ENV_VAR__ |