Use unit in config for memory module tooltip

include/modules/memory.hpp

@@ -19,8 +19,6 @@ class Memory : public ALabel {
  private:
   void parseMeminfo();
 
-  static float calc_divisor(const std::string& divisor);
-
   std::unordered_map<std::string, unsigned long> meminfo_;
 
   util::SleeperThread thread_;

src/modules/memory/common.cpp

@@ -1,5 +1,18 @@
 #include "modules/memory.hpp"
 
+namespace {
+const std::unordered_map<std::string, float> kUnits = {
+  {"kB", 1.000},
+  {"kiB", 1.024},
+  {"MB", 1.000 * 1000.0},
+  {"MiB", 1.024 * 1024.0},
+  {"GB", 1.000 * 1000.0 * 1000.0},
+  {"GiB", 1.024 * 1024.0 * 1024.0},
+  {"TB", 1.000 * 1000.0 * 1000.0 * 1000.0},
+  {"TiB", 1.024 * 1024.0 * 1024.0 * 1024.0}
+};
+}
+
 waybar::modules::Memory::Memory(const std::string& id, const Json::Value& config)
     : ALabel(config, "memory", id, "{}%", 30) {
   thread_ = [this] {
@@ -8,6 +21,11 @@ waybar::modules::Memory::Memory(const std::string& id, const Json::Value& config
   };
   if (config["unit"].isString()) {
     unit_ = config["unit"].asString();
+    if (!kUnits.contains(unit_)) {
+      unit_ = "GiB";
+    }
+  } else {
+    unit_ = "GiB";
   }
 }
 
@@ -40,7 +58,7 @@ auto waybar::modules::Memory::update() -> void {
       used_swap_percentage = 100 * (swaptotal - swapfree) / swaptotal;
     }
 
-    float divisor = calc_divisor(unit_);
+    float divisor = kUnits.at(unit_);
     float total_ram = memtotal / divisor;
     float total_swap = swaptotal / divisor;
     float used_ram = (memtotal - memfree) / divisor;
@@ -82,7 +100,7 @@ auto waybar::modules::Memory::update() -> void {
             fmt::arg("swapUsed", used_swap), fmt::arg("avail", available_ram),
             fmt::arg("swapAvail", available_swap)));
       } else {
-        label_.set_tooltip_markup(fmt::format("{:.{}f}GiB used", used_ram, 1));
+        label_.set_tooltip_markup(fmt::format("{:.{}f}{} used", used_ram, 1, unit_));
       }
     }
   } else {
@@ -91,25 +109,3 @@ auto waybar::modules::Memory::update() -> void {
   // Call parent update
   ALabel::update();
 }
-
-float waybar::modules::Memory::calc_divisor(const std::string& divisor) {
-  if (divisor == "kB") {
-    return 1.0;
-  } else if (divisor == "kiB") {
-    return 1.024;
-  } else if (divisor == "MB") {
-    return 1.000 * 1000.0;
-  } else if (divisor == "MiB") {
-    return 1.024 * 1024.0;
-  } else if (divisor == "GB") {
-    return 1.000 * 1000.0 * 1000.0;
-  } else if (divisor == "GiB") {
-    return 1.024 * 1024.0 * 1024.0;
-  } else if (divisor == "TB") {
-    return 1.000 * 1000.0 * 1000.0 * 1000.0;
-  } else if (divisor == "TiB") {
-    return 1.024 * 1024.0 * 1024.0 * 1024.0;
-  } else {  // default to GiB if it is anything that we don't recongnise
-    return 1.024 * 1024.0 * 1024.0;
-  }
-}