feat(net): %netspeed% token to show combined up+download speed (#2590)

Closes #1083 

* Add netspeed parameter (#1083)

* Update net.cpp

* Update net.hpp

* Update network.cpp

* Update CHANGELOG.md

CHANGELOG.md

@@ -154,6 +154,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
     - For module actions, you can now also specify the module name,
       action name, and optional data as separate arguments.
     - Added man page
+- `internal/network`: New token `%netspeed%` that provides the total speed of the internet (up + down speed) ([#2590](https://github.com/polybar/polybar/issues/2590))
 
 ### Changed
 - Polybar now also reads `config.ini` when searching for config files.

include/adapters/net.hpp

@@ -90,6 +90,7 @@ namespace net {
     string mac() const;
     string downspeed(int minwidth = 3, const string& unit = "B/s") const;
     string upspeed(int minwidth = 3, const string& unit = "B/s") const;
+    string netspeed(int minwidth = 3, const string& unit = "B/s") const;
     void set_unknown_up(bool unknown = true);
 
    protected:

src/adapters/net.cpp

@@ -275,6 +275,15 @@ namespace net {
     return format_speedrate(bytes_diff, minwidth, unit);
   }
   
+  /**
+   * Get total net speed rate
+   */
+  string network::netspeed(int minwidth, const string& unit) const {
+    float bytes_diff = m_status.current.received - m_status.previous.received
+                     + m_status.current.transmitted - m_status.previous.transmitted;
+    return format_speedrate(bytes_diff, minwidth, unit);
+  }
+
   /**
    * Set if unknown counts as up
    */

src/modules/network.cpp

@@ -148,6 +148,7 @@ namespace modules {
 
     auto upspeed = network->upspeed(m_udspeed_minwidth, m_udspeed_unit);
     auto downspeed = network->downspeed(m_udspeed_minwidth, m_udspeed_unit);
+    auto netspeed = network->netspeed(m_udspeed_minwidth, m_udspeed_unit);
 
     // Update label contents
     const auto replace_tokens = [&](label_t& label) {
@@ -158,6 +159,7 @@ namespace modules {
       label->replace_token("%local_ip6%", network->ip6());
       label->replace_token("%upspeed%", upspeed);
       label->replace_token("%downspeed%", downspeed);
+      label->replace_token("%netspeed%", netspeed);
 
       if (m_wired) {
         label->replace_token("%linkspeed%", m_wired->linkspeed());