From 92a14d375c8cd9dabc32ccb6dcbdf83321af535f Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sat, 11 Feb 2023 16:04:35 +0100
Subject: Added config

---
 config.cpp | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 config.cpp

(limited to 'config.cpp')

diff --git a/config.cpp b/config.cpp
new file mode 100644
index 0000000..44e0d36
--- /dev/null
+++ b/config.cpp
@@ -0,0 +1,73 @@
+#include "config.h"
+
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/xml_parser.hpp>
+
+#include <iostream>
+#include <string>
+
+namespace pt = boost::property_tree;
+using namespace std::string_literals;
+
+namespace {
+ const std::string default_datapath {"/var/lib/blog"};
+ const std::string default_listen {"::1:9000"};
+ const std::string default_name{"blog"};
+ const std::string default_keywords{"blog, reichwein.it, weblog"};
+}
+
+Config::Config(const std::string& config_filename):
+ m_dataPath{default_datapath},
+ m_listenAddress{"::1"},
+ m_listenPort{9000},
+ m_name{default_name},
+ m_keywords{default_keywords}
+{
+
+ try {
+  pt::ptree tree;
+
+  pt::read_xml(config_filename, tree, pt::xml_parser::no_comments | pt::xml_parser::trim_whitespace);
+
+  m_dataPath = tree.get<std::string>("config.datapath", default_datapath);
+  m_name = tree.get<std::string>("config.name", default_name);
+  std::string listen {tree.get<std::string>("config.port", default_listen)};
+  auto pos{listen.find_last_of(':')};
+  if (pos == std::string::npos)
+   throw std::runtime_error("Bad port address: "s + listen);
+
+  m_listenAddress = listen.substr(0, pos);
+  m_listenPort = std::stoi(listen.substr(pos + 1));
+  if (m_listenPort < 0 || m_listenPort > 65535)
+   throw std::runtime_error("Bad listen port: "s + std::to_string(m_listenPort));
+
+  m_keywords = tree.get<int>("config.keywords", default_keywords);
+ } catch (const std::exception& ex) {
+  std::cerr << "Error reading config file " << config_filename << ". Using defaults." << std::endl;
+ }
+}
+
+std::string Config::getDataPath() const
+{
+ return m_dataPath;
+}
+
+std::string Config::getListenAddress() const
+{
+ return m_listenAddress;
+}
+
+int Config::getListenPort() const
+{
+ return m_listenPort;
+}
+
+std::string Config::getName() const
+{
+ return m_name;
+}
+
+std::string Config::getKeywords() const
+{
+ return m_keywords;
+}
-- 
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