Add average choice to load extension

This commit adds a functionality to choose if one wants to see 1, 5 or
15 minutes average.

Resolves issue #604

README.md

@@ -96,7 +96,7 @@ The segments that are currently available are:
 * [`ip`](#ip) - Shows the current IP address.
 * [`vpn`](#vpn) - Shows the current VPN IP address.
 * [`public_ip`](#public_ip) - Shows your public IP address.
-* `load` - Your machine's load averages.
+* [`load`](#load) - Your machine's load averages.
 * `os_icon` - Display a nice little icon, depending on your operating system.
 * `ram` - Show free RAM.
 * `root_indicator` - An indicator if the user has superuser status.
@@ -482,6 +482,17 @@ segment will not be displayed.
 |`POWERLEVEL9K_PUBLIC_IP_METHODS`|(dig curl wget)| These methods in that order are used to refresh your IP.|
 |`POWERLEVEL9K_PUBLIC_IP_NONE`|None|The string displayed when an IP was not obtained|
 
+##### load
+
+Displays one of your load averages with appropriate state coloring. The thresholds are:
+- `0.7 * NUM_CORES <`: critical
+- `0.5 * NUM_CORES <`: warning
+- `less`: normal
+
+| Variable | Default Value | Description |
+|----------|---------------|-------------|
+|`POWERLEVEL9K_LOAD_WHICH`|5|Which average to show. Possible values: 1, 5 or 15|
+
 ##### newline
 
 Puts a newline in your prompt so you can continue using segments on the next

powerlevel9k.zsh-theme

@@ -937,6 +937,8 @@ prompt_load() {
   local current_state="unknown"
   local cores
 
+  set_default POWERLEVEL9K_LOAD_WHICH 5
+
   typeset -AH load_states
   load_states=(
     'critical'      'red'
@@ -945,31 +947,40 @@ prompt_load() {
   )
 
   if [[ "$OS" == "OSX" ]] || [[ "$OS" == "BSD" ]]; then
-    load_avg_1min=$(sysctl vm.loadavg | grep -o -E '[0-9]+(\.|,)[0-9]+' | head -n 1)
+
+    if [[ "$POWERLEVEL9K_LOAD_WHICH" -eq 1 ]]; then
+     load_avg=$(sysctl vm.loadavg | grep -o -E '[0-9]+(\.|,)[0-9]+' | head -n 3 | sed -n 1p)
+    elif [[ "$POWERLEVEL9K_LOAD_WHICH" -eq 5 ]]; then
+     load_avg=$(sysctl vm.loadavg | grep -o -E '[0-9]+(\.|,)[0-9]+' | head -n 3 | sed -n 2p)
+    else
+     load_avg=$(sysctl vm.loadavg | grep -o -E '[0-9]+(\.|,)[0-9]+' | head -n 3 | sed -n 3p)
+    fi
+
     if [[ "$OS" == "OSX" ]]; then
       cores=$(sysctl -n hw.logicalcpu)
     else
       cores=$(sysctl -n hw.ncpu)
     fi
   else
-    load_avg_1min=$(grep -o "[0-9.]*" /proc/loadavg | head -n 1)
+    load_avg=$(grep -o "[0-9.]*" /proc/loadavg | head -n 1)
     cores=$(nproc)
   fi
 
   # Replace comma
-  load_avg_1min=${load_avg_1min//,/.}
+  load_avg=${load_avg//,/.}
 
-  if [[ "$load_avg_1min" -gt $(bc -l <<< "${cores} * 0.7") ]]; then
+  if [[ "$load_avg" -gt $(bc -l <<< "${cores} * 0.7") ]]; then
     current_state="critical"
-  elif [[ "$load_avg_1min" -gt $(bc -l <<< "${cores} * 0.5") ]]; then
+elif [[ "$load_avg" -gt $(bc -l <<< "${cores} * 0.5") ]]; then
     current_state="warning"
   else
     current_state="normal"
   fi
 
-  "$1_prompt_segment" "${0}_${current_state}" "$2" "${load_states[$current_state]}" "$DEFAULT_COLOR" "$load_avg_1min" 'LOAD_ICON'
+  "$1_prompt_segment" "${0}_${current_state}" "$2" "${load_states[$current_state]}" "$DEFAULT_COLOR" "$load_avg" 'LOAD_ICON'
 }
 
+
 # Node version
 prompt_node_version() {
   local node_version=$(node -v 2>/dev/null)