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Diffstat (limited to 'CAN-binder/libs/ini-config/ini-config.cpp')
-rw-r--r-- | CAN-binder/libs/ini-config/ini-config.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/CAN-binder/libs/ini-config/ini-config.cpp b/CAN-binder/libs/ini-config/ini-config.cpp new file mode 100644 index 0000000..b670e76 --- /dev/null +++ b/CAN-binder/libs/ini-config/ini-config.cpp @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2015, 2016 ,2017 "IoT.bzh" + * Author "Loïc Collignon" <loic.collignon@iot.bzh> + * + * 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. + */ + +#include "ini-config.hpp" + +bool starts_with(const std::string& text, const std::string& token) +{ + if(text.length() < token.length()) return false; + return (text.compare(0, token.length(), token) == 0); +} + +void ini_config::read_file(const std::string& filename) +{ + std::ifstream f(filename); + if (f) + { + std::regex r_section("^\\s*\\[([^\\]]+)\\]\\s*(#.*)?$"); + std::regex r_key("^\\s*([^\\s]+)\\s*=\\s*\"([^\"]+)\"\\s*(#.*)?$"); + std::string current_section; + std::string line; + while (std::getline(f, line)) + { + std::smatch mr; + + switch (qualify(line)) + { + case line_type::section: + if (std::regex_match(line, mr, r_section) && mr.size() >= 2 && mr[1].matched) + { + current_section = mr[1].str(); + } + break; + case line_type::key: + if(std::regex_match(line, mr, r_key) && mr.size() >= 2 && mr[1].matched) + { + std::string key = current_section + '/' + mr[1].str(); + config_[key] = (mr.size() >= 3 && mr[2].matched) ? mr[2].str() : ""; + } + break; + } + } + } +} + +std::map<std::string, std::string> ini_config::get_keys(const std::string& section) +{ + std::map<std::string, std::string> ret; + + std::string prefix = section + '/'; + for(auto i = config_.begin(); + i != config_.end(); + ++i) + { + if (starts_with(i->first, prefix)) + { + ret[i->first] = i->second; + } + } + return ret; +} + +std::string ini_config::get_value(const std::string& section, const std::string& key) +{ + return config_[section + '/' + key]; +} + +ini_config::line_type ini_config::qualify(std::string& line) +{ + if (line.size()) + { + for (std::string::value_type c : line) + { + if (c == '#') return line_type::ignore; + if (c == '[') return line_type::section; + if (!std::isspace(c, std::locale("C"))) return line_type::key; + } + } + return line_type::ignore; +}
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