Moved Configuration class into library

1 files changed, 76 insertions, 0 deletions

diff --git a/lib/configuration/configuration.h b/lib/configuration/configuration.h
new file mode 100644
index 0000000..4d58a90
--- /dev/null
+++ b/lib/configuration/configuration.h
@@ -0,0 +1,76 @@
+/*
+ * This file is part of smolbote. It's copyrighted by the contributors recorded
+ * in the version control history of the file, available from its original
+ * location: https://neueland.iserlohn-fortress.net/smolbote.hg
+ *
+ * SPDX-License-Identifier: GPL-3.0
+ */
+
+#ifndef SMOLBOTE_CONFIGURATION_H
+#define SMOLBOTE_CONFIGURATION_H
+
+#include <optional>
+#include <string>
+#include <vector>
+#include <QString>
+#include <boost/program_options.hpp>
+#include <QStringList>
+
+class Configuration
+{
+public:
+    explicit Configuration();
+    ~Configuration();
+
+    bool read(const QString &path);
+    bool parse(int argc, const char **argv);
+
+    template <typename T>
+    std::optional<T> value(const char *path) const
+    {
+        // if setting doesn't exist, we crash
+        // in debug builds, check if setting exists
+#ifdef QT_DEBUG
+        if(vm.count(path) == 0) {
+            qWarning("value(%s) does not exist, probably crashing now", path);
+        }
+#endif
+
+        if constexpr(std::is_same_v<T, std::string>) {
+            std::string r;
+            try {
+                r = vm[path].as<std::string>();
+            } catch (boost::bad_any_cast &) {
+                // try int
+                try {
+                    r = std::to_string(vm[path].as<int>());
+                } catch (boost::bad_any_cast &) {
+
+                    // try bool, and crash if not that either
+                    r = vm[path].as<bool>() ? "true" : "false";
+                }
+
+            }
+
+            // check if it's a path
+            if(r.front() == '~') {
+                r.replace(0, 1, m_homePath);
+            }
+
+            return std::optional<std::string>(r);
+        } else
+            return std::optional<T>(vm[path].as<T>());
+    }
+
+    const std::vector<boost::shared_ptr<boost::program_options::option_description>> & options() {
+        return desc.options();
+    }
+
+private:
+    boost::program_options::options_description desc;
+    boost::program_options::variables_map vm;
+
+    std::string m_homePath;
+};
+
+#endif // SMOLBOTE_CONFIGURATION_H