diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index a0ff3d5f4..eceb4e251 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -30,6 +30,7 @@ add_library(common
   gl/texture.h
   hash_combine.h
   heap_array.h
+  heterogeneous_containers.h
   layered_settings_interface.cpp
   layered_settings_interface.h
   log.cpp
@@ -37,6 +38,8 @@ add_library(common
   make_array.h
   md5_digest.cpp
   md5_digest.h
+  memory_settings_interface.cpp
+  memory_settings_interface.h
   minizip_helpers.cpp
   minizip_helpers.h
   path.h
diff --git a/src/common/common.vcxproj b/src/common/common.vcxproj
index 8623a9b67..e9e5935ff 100644
--- a/src/common/common.vcxproj
+++ b/src/common/common.vcxproj
@@ -49,6 +49,7 @@
     <ClInclude Include="log.h" />
     <ClInclude Include="lru_cache.h" />
     <ClInclude Include="make_array.h" />
+    <ClInclude Include="memory_settings_interface.h" />
     <ClInclude Include="md5_digest.h" />
     <ClInclude Include="path.h" />
     <ClInclude Include="pbp_types.h" />
@@ -58,6 +59,7 @@
     <ClInclude Include="scope_guard.h" />
     <ClInclude Include="settings_interface.h" />
     <ClInclude Include="string.h" />
+    <ClInclude Include="heterogeneous_containers.h" />
     <ClInclude Include="string_util.h" />
     <ClInclude Include="thirdparty\StackWalker.h">
       <ExcludedFromBuild Condition="'$(BuildingForUWP)'=='true'">true</ExcludedFromBuild>
@@ -120,6 +122,7 @@
     <ClCompile Include="image.cpp" />
     <ClCompile Include="layered_settings_interface.cpp" />
     <ClCompile Include="log.cpp" />
+    <ClCompile Include="memory_settings_interface.cpp" />
     <ClCompile Include="md5_digest.cpp" />
     <ClCompile Include="minizip_helpers.cpp" />
     <ClCompile Include="progress_callback.cpp" />
diff --git a/src/common/common.vcxproj.filters b/src/common/common.vcxproj.filters
index 85eb5dc60..22d0cf5a2 100644
--- a/src/common/common.vcxproj.filters
+++ b/src/common/common.vcxproj.filters
@@ -135,6 +135,8 @@
     </ClInclude>
     <ClInclude Include="settings_interface.h" />
     <ClInclude Include="layered_settings_interface.h" />
+    <ClInclude Include="heterogeneous_containers.h" />
+    <ClInclude Include="memory_settings_interface.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="gl\program.cpp">
@@ -247,6 +249,7 @@
       <Filter>vulkan</Filter>
     </ClCompile>
     <ClCompile Include="layered_settings_interface.cpp" />
+    <ClCompile Include="memory_settings_interface.cpp" />
   </ItemGroup>
   <ItemGroup>
     <Natvis Include="bitfield.natvis" />
diff --git a/src/common/heterogeneous_containers.h b/src/common/heterogeneous_containers.h
new file mode 100644
index 000000000..c6637786d
--- /dev/null
+++ b/src/common/heterogeneous_containers.h
@@ -0,0 +1,97 @@
+/**
+ * Provides a map template which doesn't require heap allocations for lookups.
+ */
+
+#pragma once
+
+#include "types.h"
+#include <map>
+#include <set>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+
+namespace detail {
+struct transparent_string_hash
+{
+  using is_transparent = void;
+
+  std::size_t operator()(const std::string_view& v) const { return std::hash<std::string_view>{}(v); }
+  std::size_t operator()(const std::string& s) const { return std::hash<std::string>{}(s); }
+  std::size_t operator()(const char* s) const { return operator()(std::string_view(s)); }
+};
+
+struct transparent_string_equal
+{
+  using is_transparent = void;
+
+  bool operator()(const std::string& lhs, const std::string_view& rhs) const { return lhs == rhs; }
+  bool operator()(const std::string& lhs, const std::string& rhs) const { return lhs == rhs; }
+  bool operator()(const std::string& lhs, const char* rhs) const { return lhs == rhs; }
+  bool operator()(const std::string_view& lhs, const std::string& rhs) const { return lhs == rhs; }
+  bool operator()(const char* lhs, const std::string& rhs) const { return lhs == rhs; }
+};
+
+struct transparent_string_less
+{
+  using is_transparent = void;
+
+  bool operator()(const std::string& lhs, const std::string_view& rhs) const { return lhs < rhs; }
+  bool operator()(const std::string& lhs, const std::string& rhs) const { return lhs < rhs; }
+  bool operator()(const std::string& lhs, const char* rhs) const { return lhs < rhs; }
+  bool operator()(const std::string_view& lhs, const std::string& rhs) const { return lhs < rhs; }
+  bool operator()(const char* lhs, const std::string& rhs) const { return lhs < rhs; }
+};
+} // namespace detail
+
+// This requires C++20, so fallback to ugly heap allocations if we don't have it.
+#if __cplusplus >= 202002L
+template<typename ValueType>
+using UnorderedStringMap =
+  std::unordered_map<std::string, ValueType, detail::transparent_string_hash, detail::transparent_string_equal>;
+template<typename ValueType>
+using UnorderedStringMultimap =
+  std::unordered_multimap<std::string, ValueType, detail::transparent_string_hash, detail::transparent_string_equal>;
+using UnorderedStringSet =
+  std::unordered_set<std::string, detail::transparent_string_hash, detail::transparent_string_equal>;
+using UnorderedStringMultiSet =
+  std::unordered_multiset<std::string, detail::transparent_string_hash, detail::transparent_string_equal>;
+
+template<typename KeyType, typename ValueType>
+ALWAYS_INLINE typename UnorderedStringMap<ValueType>::const_iterator
+UnorderedStringMapFind(const UnorderedStringMap<ValueType>& map, const KeyType& key)
+{
+  return map.find(key);
+}
+template<typename KeyType, typename ValueType>
+ALWAYS_INLINE typename UnorderedStringMap<ValueType>::iterator
+UnorderedStringMapFind(UnorderedStringMap<ValueType>& map, const KeyType& key)
+{
+  return map.find(key);
+}
+#else
+template<typename ValueType>
+using UnorderedStringMap = std::unordered_map<std::string, ValueType>;
+template<typename ValueType>
+using UnorderedStringMultimap = std::unordered_multimap<std::string, ValueType>;
+using UnorderedStringSet = std::unordered_set<std::string>;
+using UnorderedStringMultiSet = std::unordered_multiset<std::string>;
+
+template<typename KeyType, typename ValueType>
+ALWAYS_INLINE typename UnorderedStringMap<ValueType>::const_iterator UnorderedStringMapFind(const UnorderedStringMap<ValueType>& map, const KeyType& key)
+{
+  return map.find(std::string(key));
+}
+template<typename KeyType, typename ValueType>
+ALWAYS_INLINE typename UnorderedStringMap<ValueType>::iterator UnorderedStringMapFind(UnorderedStringMap<ValueType>& map, const KeyType& key)
+{
+  return map.find(std::string(key));
+}
+#endif
+
+template<typename ValueType>
+using StringMap = std::map<std::string, ValueType, detail::transparent_string_less>;
+template<typename ValueType>
+using StringMultiMap = std::multimap<std::string, ValueType, detail::transparent_string_less>;
+using StringSet = std::set<std::string, detail::transparent_string_less>;
+using StringMultiSet = std::multiset<std::string, detail::transparent_string_less>;
diff --git a/src/common/memory_settings_interface.cpp b/src/common/memory_settings_interface.cpp
new file mode 100644
index 000000000..586c00bf5
--- /dev/null
+++ b/src/common/memory_settings_interface.cpp
@@ -0,0 +1,276 @@
+#include "memory_settings_interface.h"
+#include "common/assert.h"
+#include "common/string_util.h"
+
+MemorySettingsInterface::MemorySettingsInterface() = default;
+
+MemorySettingsInterface::~MemorySettingsInterface() = default;
+
+bool MemorySettingsInterface::Save()
+{
+  return false;
+}
+
+void MemorySettingsInterface::Clear()
+{
+  m_sections.clear();
+}
+
+bool MemorySettingsInterface::GetIntValue(const char* section, const char* key, s32* value) const
+{
+  const auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return false;
+
+  const auto iter = sit->second.find(key);
+  if (iter == sit->second.end())
+    return false;
+
+  std::optional<s32> parsed = StringUtil::FromChars<s32>(iter->second, 10);
+  if (!parsed.has_value())
+    return false;
+
+  *value = parsed.value();
+  return true;
+}
+
+bool MemorySettingsInterface::GetUIntValue(const char* section, const char* key, u32* value) const
+{
+  const auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return false;
+
+  const auto iter = sit->second.find(key);
+  if (iter == sit->second.end())
+    return false;
+
+  std::optional<u32> parsed = StringUtil::FromChars<u32>(iter->second, 10);
+  if (!parsed.has_value())
+    return false;
+
+  *value = parsed.value();
+  return true;
+}
+
+bool MemorySettingsInterface::GetFloatValue(const char* section, const char* key, float* value) const
+{
+  const auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return false;
+
+  const auto iter = sit->second.find(key);
+  if (iter == sit->second.end())
+    return false;
+
+  std::optional<float> parsed = StringUtil::FromChars<float>(iter->second);
+  if (!parsed.has_value())
+    return false;
+
+  *value = parsed.value();
+  return true;
+}
+
+bool MemorySettingsInterface::GetDoubleValue(const char* section, const char* key, double* value) const
+{
+  const auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return false;
+
+  const auto iter = sit->second.find(key);
+  if (iter == sit->second.end())
+    return false;
+
+  std::optional<double> parsed = StringUtil::FromChars<double>(iter->second);
+  if (!parsed.has_value())
+    return false;
+
+  *value = parsed.value();
+  return true;
+}
+
+bool MemorySettingsInterface::GetBoolValue(const char* section, const char* key, bool* value) const
+{
+  const auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return false;
+
+  const auto iter = sit->second.find(key);
+  if (iter == sit->second.end())
+    return false;
+
+  std::optional<bool> parsed = StringUtil::FromChars<bool>(iter->second);
+  if (!parsed.has_value())
+    return false;
+
+  *value = parsed.value();
+  return true;
+}
+
+bool MemorySettingsInterface::GetStringValue(const char* section, const char* key, std::string* value) const
+{
+  const auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return false;
+
+  const auto iter = sit->second.find(key);
+  if (iter == sit->second.end())
+    return false;
+
+  *value = iter->second;
+  return true;
+}
+
+void MemorySettingsInterface::SetIntValue(const char* section, const char* key, s32 value)
+{
+  SetValue(section, key, std::to_string(value));
+}
+
+void MemorySettingsInterface::SetUIntValue(const char* section, const char* key, u32 value)
+{
+  SetValue(section, key, std::to_string(value));
+}
+
+void MemorySettingsInterface::SetFloatValue(const char* section, const char* key, float value)
+{
+  SetValue(section, key, std::to_string(value));
+}
+
+void MemorySettingsInterface::SetDoubleValue(const char* section, const char* key, double value)
+{
+  SetValue(section, key, std::to_string(value));
+}
+
+void MemorySettingsInterface::SetBoolValue(const char* section, const char* key, bool value)
+{
+  SetValue(section, key, std::to_string(value));
+}
+
+void MemorySettingsInterface::SetStringValue(const char* section, const char* key, const char* value)
+{
+  SetValue(section, key, value);
+}
+
+void MemorySettingsInterface::SetValue(const char* section, const char* key, std::string value)
+{
+  auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    sit = m_sections.emplace(std::make_pair(std::string(section), KeyMap())).first;
+
+  const auto range = sit->second.equal_range(key);
+  if (range.first == sit->second.end())
+  {
+    sit->second.emplace(std::string(key), std::move(value));
+    return;
+  }
+
+  auto iter = range.first;
+  iter->second = std::move(value);
+  ++iter;
+
+  // remove other values
+  while (iter != range.second)
+  {
+    auto remove = iter++;
+    sit->second.erase(remove);
+  }
+}
+
+std::vector<std::string> MemorySettingsInterface::GetStringList(const char* section, const char* key) const
+{
+  std::vector<std::string> ret;
+
+  const auto sit = m_sections.find(section);
+  if (sit != m_sections.end())
+  {
+    const auto range = sit->second.equal_range(key);
+    for (auto iter = range.first; iter != range.second; ++iter)
+      ret.emplace_back(iter->second);
+  }
+
+  return ret;
+}
+
+void MemorySettingsInterface::SetStringList(const char* section, const char* key, const std::vector<std::string>& items)
+{
+  auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    sit = m_sections.emplace(std::make_pair(std::string(section), KeyMap())).first;
+
+  const auto range = sit->second.equal_range(key);
+  for (auto iter = range.first; iter != range.second;)
+    sit->second.erase(iter++);
+
+  std::string_view keysv(key);
+  for (const std::string& value : items)
+    sit->second.emplace(keysv, value);
+}
+
+bool MemorySettingsInterface::RemoveFromStringList(const char* section, const char* key, const char* item)
+{
+  auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    sit = m_sections.emplace(std::make_pair(std::string(section), KeyMap())).first;
+
+  const auto range = sit->second.equal_range(key);
+  bool result = false;
+  for (auto iter = range.first; iter != range.second;)
+  {
+    if (iter->second == item)
+    {
+      sit->second.erase(iter++);
+      result = true;
+    }
+    else
+    {
+      ++iter;
+    }
+  }
+
+  return result;
+}
+
+bool MemorySettingsInterface::AddToStringList(const char* section, const char* key, const char* item)
+{
+  auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    sit = m_sections.emplace(std::make_pair(std::string(section), KeyMap())).first;
+
+  const auto range = sit->second.equal_range(key);
+  for (auto iter = range.first; iter != range.second; ++iter)
+  {
+    if (iter->second == item)
+      return false;
+  }
+
+  sit->second.emplace(std::string(key), std::string(item));
+  return true;
+}
+
+bool MemorySettingsInterface::ContainsValue(const char* section, const char* key) const
+{
+  const auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return false;
+
+  return (sit->second.find(key) != sit->second.end());
+}
+
+void MemorySettingsInterface::DeleteValue(const char* section, const char* key)
+{
+  auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return;
+
+  const auto range = sit->second.equal_range(key);
+  for (auto iter = range.first; iter != range.second;)
+    sit->second.erase(iter++);
+}
+
+void MemorySettingsInterface::ClearSection(const char* section)
+{
+  auto sit = m_sections.find(section);
+  if (sit == m_sections.end())
+    return;
+
+  m_sections.erase(sit);
+}
diff --git a/src/duckstation-regtest/regtest_settings_interface.h b/src/common/memory_settings_interface.h
similarity index 83%
rename from src/duckstation-regtest/regtest_settings_interface.h
rename to src/common/memory_settings_interface.h
index ccbf6930b..787fb794e 100644
--- a/src/duckstation-regtest/regtest_settings_interface.h
+++ b/src/common/memory_settings_interface.h
@@ -1,13 +1,13 @@
 #pragma once
-#include "core/settings.h"
+#include "heterogeneous_containers.h"
+#include "settings_interface.h"
 #include <string>
-#include <unordered_map>
 
-class RegTestSettingsInterface final : public SettingsInterface
+class MemorySettingsInterface final : public SettingsInterface
 {
 public:
-  RegTestSettingsInterface();
-  ~RegTestSettingsInterface();
+  MemorySettingsInterface();
+  ~MemorySettingsInterface();
 
   bool Save() override;
 
@@ -44,6 +44,10 @@ public:
   using SettingsInterface::GetUIntValue;
 
 private:
-  using KeyMap = std::unordered_map<std::string, std::string>;
-  KeyMap m_keys;
+  using KeyMap = UnorderedStringMultimap<std::string>;
+  using SectionMap = UnorderedStringMap<KeyMap>;
+
+  void SetValue(const char* section, const char* key, std::string value);
+
+  SectionMap m_sections;
 };
\ No newline at end of file
diff --git a/src/duckstation-regtest/CMakeLists.txt b/src/duckstation-regtest/CMakeLists.txt
index 89fbc4969..0cbe8236a 100644
--- a/src/duckstation-regtest/CMakeLists.txt
+++ b/src/duckstation-regtest/CMakeLists.txt
@@ -3,8 +3,6 @@ add_executable(duckstation-regtest
   regtest_host_display.h
   regtest_host_interface.cpp
   regtest_host_interface.h
-  regtest_settings_interface.cpp
-  regtest_settings_interface.h
 )
 
 target_link_libraries(duckstation-regtest PRIVATE core common frontend-common scmversion)
diff --git a/src/duckstation-regtest/duckstation-regtest.vcxproj b/src/duckstation-regtest/duckstation-regtest.vcxproj
index 37b1824b0..4752d5266 100644
--- a/src/duckstation-regtest/duckstation-regtest.vcxproj
+++ b/src/duckstation-regtest/duckstation-regtest.vcxproj
@@ -7,12 +7,10 @@
   <ItemGroup>
     <ClCompile Include="regtest_host_display.cpp" />
     <ClCompile Include="regtest_host_interface.cpp" />
-    <ClCompile Include="regtest_settings_interface.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="regtest_host_display.h" />
     <ClInclude Include="regtest_host_interface.h" />
-    <ClInclude Include="regtest_settings_interface.h" />
   </ItemGroup>
   <Import Project="..\..\dep\msvc\vsprops\ConsoleApplication.props" />
   <Import Project="..\frontend-common\frontend-common.props" />
diff --git a/src/duckstation-regtest/duckstation-regtest.vcxproj.filters b/src/duckstation-regtest/duckstation-regtest.vcxproj.filters
index 79aad0c97..667d931ba 100644
--- a/src/duckstation-regtest/duckstation-regtest.vcxproj.filters
+++ b/src/duckstation-regtest/duckstation-regtest.vcxproj.filters
@@ -3,11 +3,9 @@
   <ItemGroup>
     <ClCompile Include="regtest_host_interface.cpp" />
     <ClCompile Include="regtest_host_display.cpp" />
-    <ClCompile Include="regtest_settings_interface.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="regtest_host_interface.h" />
     <ClInclude Include="regtest_host_display.h" />
-    <ClInclude Include="regtest_settings_interface.h" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/duckstation-regtest/regtest_host_interface.h b/src/duckstation-regtest/regtest_host_interface.h
index 6631cdc3f..954196356 100644
--- a/src/duckstation-regtest/regtest_host_interface.h
+++ b/src/duckstation-regtest/regtest_host_interface.h
@@ -1,6 +1,6 @@
 #pragma once
 #include "core/host_interface.h"
-#include "regtest_settings_interface.h"
+#include "common/memory_settings_interface.h"
 
 class RegTestHostInterface final : public HostInterface
 {
@@ -60,6 +60,6 @@ private:
   void InitializeSettings();
   void UpdateSettings();
 
-  RegTestSettingsInterface m_settings_interface;
+  MemorySettingsInterface m_settings_interface;
   std::recursive_mutex m_settings_mutex;
 };
diff --git a/src/duckstation-regtest/regtest_settings_interface.cpp b/src/duckstation-regtest/regtest_settings_interface.cpp
deleted file mode 100644
index c7d210d85..000000000
--- a/src/duckstation-regtest/regtest_settings_interface.cpp
+++ /dev/null
@@ -1,198 +0,0 @@
-#include "regtest_settings_interface.h"
-#include "common/assert.h"
-#include "common/log.h"
-#include "common/string_util.h"
-Log_SetChannel(RegTestSettingsInterface);
-
-RegTestSettingsInterface::RegTestSettingsInterface() = default;
-
-RegTestSettingsInterface::~RegTestSettingsInterface() = default;
-
-bool RegTestSettingsInterface::Save()
-{
-  return false;
-}
-
-void RegTestSettingsInterface::Clear()
-{
-  m_keys.clear();
-}
-
-static std::string GetFullKey(const char* section, const char* key)
-{
-  return StringUtil::StdStringFromFormat("%s/%s", section, key);
-}
-
-bool RegTestSettingsInterface::GetIntValue(const char* section, const char* key, s32* value) const
-{
-  const std::string fullkey(GetFullKey(section, key));
-  auto iter = m_keys.find(fullkey);
-  if (iter == m_keys.end())
-    return false;
-
-  std::optional<s32> parsed = StringUtil::FromChars<s32>(iter->second, 10);
-  if (!parsed.has_value())
-    return false;
-
-  *value = parsed.value();
-  return true;
-}
-
-bool RegTestSettingsInterface::GetUIntValue(const char* section, const char* key, u32* value) const
-{
-  const std::string fullkey(GetFullKey(section, key));
-  auto iter = m_keys.find(fullkey);
-  if (iter == m_keys.end())
-    return false;
-
-  std::optional<u32> parsed = StringUtil::FromChars<u32>(iter->second, 10);
-  if (!parsed.has_value())
-    return false;
-
-  *value = parsed.value();
-  return true;
-}
-
-bool RegTestSettingsInterface::GetFloatValue(const char* section, const char* key, float* value) const
-{
-  const std::string fullkey(GetFullKey(section, key));
-  auto iter = m_keys.find(fullkey);
-  if (iter == m_keys.end())
-    return false;
-
-  std::optional<float> parsed = StringUtil::FromChars<float>(iter->second);
-  if (!parsed.has_value())
-    return false;
-
-  *value = parsed.value();
-  return true;
-}
-
-bool RegTestSettingsInterface::GetDoubleValue(const char* section, const char* key, double* value) const
-{
-  const std::string fullkey(GetFullKey(section, key));
-  auto iter = m_keys.find(fullkey);
-  if (iter == m_keys.end())
-    return false;
-
-  std::optional<double> parsed = StringUtil::FromChars<double>(iter->second);
-  if (!parsed.has_value())
-    return false;
-
-  *value = parsed.value();
-  return true;
-}
-
-bool RegTestSettingsInterface::GetBoolValue(const char* section, const char* key, bool* value) const
-{
-  const std::string fullkey(GetFullKey(section, key));
-  auto iter = m_keys.find(fullkey);
-  if (iter == m_keys.end())
-    return false;
-
-  std::optional<bool> parsed = StringUtil::FromChars<bool>(iter->second);
-  if (!parsed.has_value())
-    return false;
-
-  *value = parsed.value();
-  return true;
-}
-
-bool RegTestSettingsInterface::GetStringValue(const char* section, const char* key, std::string* value) const
-{
-  const std::string fullkey(GetFullKey(section, key));
-  auto iter = m_keys.find(fullkey);
-  if (iter == m_keys.end())
-    return false;
-
-  *value = iter->second;
-  return true;
-}
-
-void RegTestSettingsInterface::SetIntValue(const char* section, const char* key, s32 value)
-{
-  const std::string fullkey(GetFullKey(section, key));
-  m_keys[std::move(fullkey)] = std::to_string(value);
-}
-
-void RegTestSettingsInterface::SetUIntValue(const char* section, const char* key, u32 value)
-{
-  const std::string fullkey(GetFullKey(section, key));
-  m_keys[std::move(fullkey)] = std::to_string(value);
-}
-
-void RegTestSettingsInterface::SetFloatValue(const char* section, const char* key, float value)
-{
-  const std::string fullkey(GetFullKey(section, key));
-  m_keys[std::move(fullkey)] = std::to_string(value);
-}
-
-void RegTestSettingsInterface::SetDoubleValue(const char* section, const char* key, double value)
-{
-  const std::string fullkey(GetFullKey(section, key));
-  m_keys[std::move(fullkey)] = std::to_string(value);
-}
-
-void RegTestSettingsInterface::SetBoolValue(const char* section, const char* key, bool value)
-{
-  const std::string fullkey(GetFullKey(section, key));
-  m_keys[std::move(fullkey)] = std::string(value ? "true" : "false");
-}
-
-void RegTestSettingsInterface::SetStringValue(const char* section, const char* key, const char* value)
-{
-  const std::string fullkey(GetFullKey(section, key));
-  m_keys[std::move(fullkey)] = value;
-}
-
-std::vector<std::string> RegTestSettingsInterface::GetStringList(const char* section, const char* key) const
-{
-  std::vector<std::string> ret;
-  Panic("Not implemented");
-  return ret;
-}
-
-void RegTestSettingsInterface::SetStringList(const char* section, const char* key,
-                                             const std::vector<std::string>& items)
-{
-  Panic("Not implemented");
-}
-
-bool RegTestSettingsInterface::RemoveFromStringList(const char* section, const char* key, const char* item)
-{
-  Panic("Not implemented");
-  return false;
-}
-
-bool RegTestSettingsInterface::AddToStringList(const char* section, const char* key, const char* item)
-{
-  Panic("Not implemented");
-  return false;
-}
-
-bool RegTestSettingsInterface::ContainsValue(const char* section, const char* key) const
-{
-  const std::string fullkey(GetFullKey(section, key));
-  return (m_keys.find(fullkey) != m_keys.end());
-}
-
-void RegTestSettingsInterface::DeleteValue(const char* section, const char* key)
-{
-  const std::string fullkey(GetFullKey(section, key));
-
-  auto iter = m_keys.find(fullkey);
-  if (iter != m_keys.end())
-    m_keys.erase(iter);
-}
-
-void RegTestSettingsInterface::ClearSection(const char* section)
-{
-  const std::string start(StringUtil::StdStringFromFormat("%s/", section));
-  for (auto iter = m_keys.begin(); iter != m_keys.end();)
-  {
-    if (StringUtil::StartsWith(iter->first, start.c_str()))
-      iter = m_keys.erase(iter);
-    else
-      ++iter;
-  }
-}