ConfigManager.cpp

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#include <ConfigManager.h>

#include <iostream>
#include <fstream>
#include <sstream>

#include <utils.h>

ConfigManager & ConfigManager::getInstance() {
    static ConfigManager instance;
    return instance;
}

const Json::Value & ConfigManager::operator[](const std::string & name) const {
    for(auto & root: roots) {
        const Json::Value & ret = getValue(root, name);
        std::cout << "searched for " << name << std::endl;
        std::cout << "got: " << ret << std::endl;
        if(ret == Json::Value::null)
            continue;
        return ret;
    }
    return Json::Value::null;
}

const Json::Value & ConfigManager::getValue(const Json::Value & root, const std::string & name) const {
    auto dot = name.find_first_of(".");
    if(dot == std::string::npos)
        return root[name];
    return getValue(root[name.substr(0, dot)], name.substr(dot+1));
}

void ConfigManager::addConfigDir(const std::string & dirname) {
    std::stringstream ss;
    ss << dirname << "/capture.json";
    addConfigFile(ss.str());
}

void ConfigManager::addConfigFile(const std::string & filename) {
    Json::Value root;
    Json::Reader reader;
    std::ifstream ifs(filename);
    if(!reader.parse(ifs, root)) {
        std::cout << "Error parsing " << filename << "!" << std::endl;
        std::cout << reader.getFormattedErrorMessages() << std::endl;
        ifs.close();
        return;
    }
    ifs.close();
    roots.push_front(root);
}

// PRIVATE

ConfigManager::ConfigManager() {
    std::stringstream captureConfig;
    captureConfig << getHome() << "/.macs/capture.json";
    init({captureConfig.str()});
}

void ConfigManager::init(const std::list<std::string> & config_files) {
    for(auto filename: config_files) {
            addConfigFile(filename);
    }
}

ConfigManager::~ConfigManager() {
}