Release v0.3.0: move settings into an on-demand single-instance configurator

src/storage.cpp

@@ -102,6 +102,10 @@ void validateSettings(const Settings &s)
     }
 }
 Settings loadSettings(const std::filesystem::path &path, const std::vector<Layout> &layouts)
+{
+    return decodeSettings(std::filesystem::exists(path) ? readFile(path, 4 * 1024 * 1024) : Bytes{}, layouts);
+}
+Settings decodeSettings(const Bytes &bytes, const std::vector<Layout> &layouts)
 {
     Settings s;
     for (size_t i = 0; i < layouts.size(); ++i)
@@ -111,9 +115,9 @@ Settings loadSettings(const std::filesystem::path &path, const std::vector<Layou
         s.direct.push_back(i < 3 ? L"Ctrl+Alt+Shift+" + std::to_wstring(i + 1) : L"");
         s.directIds.push_back(layouts[i].id);
     }
-    if (!std::filesystem::exists(path))
+    if (bytes.empty())
         return s;
-    auto j = parse(readFile(path, 4 * 1024 * 1024));
+    auto j = parse(bytes);
     auto format = j.value("format", std::string());
     if (format != "kswitcher-settings" && format != "typlo-settings")
         throw std::runtime_error("Not a KSwitcher or Typlo settings file");
@@ -177,6 +181,10 @@ Settings loadSettings(const std::filesystem::path &path, const std::vector<Layou
     return s;
 }
 void saveSettings(const std::filesystem::path &path, const Settings &s)
+{
+    atomicWrite(path, encodeSettings(s));
+}
+Bytes encodeSettings(const Settings &s)
 {
     validateSettings(s);
     Json j = {{"format", "kswitcher-settings"},
@@ -221,7 +229,7 @@ void saveSettings(const std::filesystem::path &path, const Settings &s)
     j["excludedApps"] = Json::array();
     for (auto &name : s.excluded)
         j["excludedApps"].push_back(utf8(name));
-    atomicWrite(path, jsonBytes(j));
+    return jsonBytes(j);
 }
 Bytes encodeClip(const Clip &clip)
 {