1 files changed, 136 insertions, 0 deletions
diff --git a/src/core/io/config_map.cc b/src/core/io/config_map.cc
new file mode 100644
index 0000000..57692a7
--- /dev/null
+++ b/src/core/io/config_map.cc
@@ -0,0 +1,136 @@
+#include "core/pch.hh"
+
+#include "core/io/config_map.hh"
+
+#include "core/config/ivalue.hh"
+
+#include "core/io/cmdline.hh"
+
+#include "core/utils/string.hh"
+
+#include "core/version.hh"
+
+void io::ConfigMap::load_cmdline(void)
+{
+    for(auto it : m_values) {
+        if(auto value = io::cmdline::get_cstr(it.first.c_str())) {
+            it.second->set(value);
+        }
+    }
+}
+
+bool io::ConfigMap::load_file(std::string_view path)
+{
+    if(auto file = PHYSFS_openRead(std::string(path).c_str())) {
+        auto source = std::string(PHYSFS_fileLength(file), char(0x00));
+        PHYSFS_readBytes(file, source.data(), source.size());
+        PHYSFS_close(file);
+
+        std::string line;
+        std::string kv_string;
+        std::istringstream stream(source);
+
+        while(std::getline(stream, line)) {
+            auto comment = line.find_first_of('#');
+
+            if(comment == std::string::npos) {
+                kv_string = utils::trim_whitespace(line);
+            }
+            else {
+                kv_string = utils::trim_whitespace(line.substr(0, comment));
+            }
+
+            if(utils::is_whitespace(kv_string)) {
+                // Ignore empty or commented out lines
+                continue;
+            }
+
+            auto separator = kv_string.find('=');
+
+            if(separator == std::string::npos) {
+                spdlog::warn("config: {}: invalid line: {}", path, line);
+                continue;
+            }
+
+            auto kv_name = utils::trim_whitespace(kv_string.substr(0, separator));
+            auto kv_value = utils::trim_whitespace(kv_string.substr(separator + 1));
+
+            auto kv_pair = m_values.find(kv_name);
+
+            if(kv_pair == m_values.cend()) {
+                spdlog::warn("config: {}: unknown key: {}", path, kv_name);
+                continue;
+            }
+
+            kv_pair->second->set(kv_value.c_str());
+        }
+
+        return true;
+    }
+
+    return false;
+}
+
+bool io::ConfigMap::save_file(std::string_view path) const
+{
+    std::ostringstream stream;
+
+    auto curtime = std::time(nullptr);
+
+    stream << "# Voxelius " << version::triplet << " configuration file" << std::endl;
+    stream << "# Generated at: " << std::put_time(std::gmtime(&curtime), "%Y-%m-%d %H:%M:%S %z") << std::endl << std::endl;
+
+    for(const auto& it : m_values) {
+        stream << it.first << "=";
+        stream << it.second->get();
+        stream << std::endl;
+    }
+
+    if(auto file = PHYSFS_openWrite(std::string(path).c_str())) {
+        auto source = stream.str();
+        PHYSFS_writeBytes(file, source.data(), source.size());
+        PHYSFS_close(file);
+        return true;
+    }
+
+    return false;
+}
+
+bool io::ConfigMap::set_value(std::string_view name, std::string_view value)
+{
+    auto kv_pair = m_values.find(std::string(name));
+
+    if(kv_pair != m_values.cend()) {
+        kv_pair->second->set(value);
+        return true;
+    }
+
+    return false;
+}
+
+std::string_view io::ConfigMap::get_value(std::string_view name) const
+{
+    auto kv_pair = m_values.find(std::string(name));
+    if(kv_pair != m_values.cend()) {
+        return kv_pair->second->get();
+    }
+
+    return std::string_view();
+}
+
+void io::ConfigMap::add_value(std::string_view name, config::IValue& vref)
+{
+    m_values.insert_or_assign(std::string(name), &vref);
+}
+
+const config::IValue* io::ConfigMap::find(std::string_view name) const
+{
+    auto kv_pair = m_values.find(std::string(name));
+
+    if(kv_pair != m_values.cend()) {
+        return kv_pair->second;
+    }
+    else {
+        return nullptr;
+    }
+}