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-rw-r--r--libs/ini-config/ini-config.cpp100
1 files changed, 100 insertions, 0 deletions
diff --git a/libs/ini-config/ini-config.cpp b/libs/ini-config/ini-config.cpp
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+++ b/libs/ini-config/ini-config.cpp
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+/*
+ * 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;
+ case line_type::ignore:
+ break;
+ }
+ }
+ }
+}
+
+ini_config::map ini_config::get_keys(const std::string& section, bool wo_prefix)
+{
+ map ret;
+ std::string key;
+
+ std::string prefix = section + '/';
+ for(auto i = config_.begin();
+ i != config_.end();
+ ++i)
+ {
+ if (starts_with(i->first, prefix))
+ {
+ if(wo_prefix)
+ key = i->first.substr(section.size()+1);
+ else
+ key = i->first;
+ ret[key] = 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;
+} \ No newline at end of file