Add status bar script

1 files changed, 276 insertions, 0 deletions

diff --git a/dwm-statusbar b/dwm-statusbar
new file mode 100755
index 0000000..6ebd11c
--- /dev/null
+++ b/dwm-statusbar
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+#!/usr/bin/env bash
+#
+# Status bar for dwm. Adapted from:
+# https://github.com/w0ng/bin/blob/master/dwm-statusbar
+#
+# The functions are fairly system-dependent, so it is recommended to copy this file to your ~/bin (or equivalent) and make the adjustments there.
+
+# Colour codes from dwm/config.h
+colour_faded="\x01" # grey on black
+colour_neutral="\x02" # blue on black
+colour_warning="\x03" # yellow on black
+colour_critical="\x04" # red on black
+colour_normal="\x05" # grey on black
+
+# The amount of spacing to use (or a spacer character, like |)
+space="  "
+
+# Time to wait between refreshes, in seconds
+refresh="5"
+
+# Name of the network adapters, like enp3s0
+eth_adapter=""
+wlan_adapter="wlp1s0"
+
+print_date() {
+  echo -ne "${colour_normal}$(date "+%d.%m.%y")"
+}
+
+print_time() {
+  time_local="$(date "+%H:%M")"
+  #time_us="$(TZ='US/Central' date "+%H:%M")"
+  time_br="$(TZ='America/Sao_Paulo' date "+%H:%M")"
+
+  echo -ne "${colour_neutral}\uE3D2${colour_normal}${time_local}${colour_faded}${time_br}"
+  #echo -ne "${colour_neutral}\uE3D2${colour_normal}${time_local}"
+}
+
+print_volume() {
+  # empty E022, low E023, full E024, mid E03B
+  volume=$(amixer get Master -M | tail -n1 | sed -r 's/.*\[(.*)%\].*/\1/')
+  mute="$(amixer get Master | tail -n1 | sed -r 's/.*\[(on|off)\].*/\1/')"
+  
+  if [ "$mute" == "off" ]; then
+    vol_colour=$colour_warning
+    icon_colour=$colour_warning
+    icon="\uE022"
+  else
+    vol_colour=$colour_normal
+    icon_colour=$colour_neutral
+    if [ $volume -eq 0 ]; then
+      icon="\uE022"
+    elif [ $volume -lt 33 ]; then
+      icon="\uE023"
+    elif [ $volume -lt 66 ]; then
+      icon="\uE03B"
+    else
+      icon="\uE024"
+    fi
+  fi
+  
+  echo -ne "${icon_colour}${icon}${vol_colour}${volume}%"
+}
+
+# This is very system-dependent
+print_backlight() {
+  # E3D8
+  max_backlight=$(cat /sys/class/backlight/amdgpu_bl1/max_brightness)
+  let backlight="100 * $(cat /sys/class/backlight/amdgpu_bl1/brightness) / $max_backlight"
+
+  echo -ne "${colour_neutral}\uE3D8${colour_normal}${backlight}%"
+}
+
+# This will probably need tweaking
+print_battery() {
+  # charging E20D, empty E20E, full E20F, 2/3 E210, 1/3 E211
+  # 1 or 0
+  ac_status=$(cat /sys/class/power_supply/ACAD/online)
+  
+  if [ $ac_status -eq 1 ]; then
+    icon_colour=$colour_neutral
+    if [ -d "/sys/class/power_supply/BAT1" ]; then
+      icon="\uE20D"
+      bat_colour=$colour_normal
+      bat_capacity="$(cat /sys/class/power_supply/BAT1/capacity)%"
+    else
+      icon="\uE257"
+    fi
+  else
+    bat_capacity=$(cat /sys/class/power_supply/BAT1/capacity)
+    if [ $bat_capacity -lt 10 ]; then
+      bat_colour=$colour_critical
+      icon_colour=$colour_critical
+      icon="\uE20E"
+    elif [ $bat_capacity -lt 35 ]; then
+      bat_colour=$colour_warning
+      icon_colour=$colour_warning
+      icon="\uE211"
+    elif [ $bat_capacity -lt 65 ]; then
+      bat_colour=$colour_normal
+      icon_colour=$colour_neutral
+      icon="\uE1FB"
+    elif [ $bat_capacity -lt 85 ]; then
+      bat_colour=$colour_normal
+      icon_colour=$colour_neutral
+      icon="\uE210"
+    else
+      bat_colour=$colour_normal
+      icon_colour=$colour_neutral
+      icon="\uE20F"
+    fi
+    bat_capacity="${bat_capacity}%"
+  fi
+  
+  echo -ne "${icon_colour}${icon}${bat_colour}${bat_capacity}"
+}
+
+# This should work out of the box
+print_root_free() {
+  # floppy E0C3 
+  root_free=$(df -kh / | awk 'NR==2 {print $4}')
+  root_percent=$(df -kh / | awk 'NR==2 {print $5}' | sed 's/%//g')
+  
+  if [ $root_percent -gt 90 ]; then
+    icon_colour=$colour_critical
+    root_colour=$colour_critical
+  elif [ $root_percent -gt 75 ]; then
+    icon_colour=$colour_warning
+    root_colour=$colour_warning
+  else
+    icon_colour=$colour_neutral
+    root_colour=$colour_normal
+  fi
+  
+  echo -ne "${icon_colour}\uE0C3${root_colour}/: ${root_free} (${root_percent}%)"
+}
+
+# This should also work out of the box, but only makes sense if your /home is on a different partition
+print_home_free() {
+  # floppy E0C3 
+  home_free=$(df -kh /home | awk 'NR==2 {print $4}')
+  home_percent=$(df -kh /home | awk 'NR==2 {print $5}' | sed 's/%//g')
+  
+  if [ $home_percent -gt 90 ]; then
+    icon_colour=$colour_critical
+    home_colour=$colour_critical
+  elif [ $home_percent -gt 75 ]; then
+    icon_colour=$colour_warning
+    home_colour=$colour_warning
+  else
+    icon_colour=$colour_neutral
+    home_colour=$colour_normal
+  fi
+  
+  echo -ne "${icon_colour}\uE0C3${home_colour}/home: ${home_free} (${home_percent}%)"
+}
+
+# This is highly system-dependent, so use it as a template only
+print_shared_free() {
+  # floppy E0C3 
+  shared_free=$(df -kh /home/eddy/shared | awk 'NR==2 {print $4}')
+  shared_percent=$(df -kh /home/eddy/shared | awk 'NR==2 {print $5}' | sed 's/%//g')
+  
+  if [ $shared_percent -gt 90 ]; then
+    icon_colour=$colour_critical
+    shared_colour=$colour_critical
+  elif [ $shared_percent -gt 75 ]; then
+    icon_colour=$colour_warning
+    shared_colour=$colour_warning
+  else
+    icon_colour=$colour_neutral
+    shared_colour=$colour_normal
+  fi
+  
+  echo -ne "${icon_colour}\uE0C3${shared_colour}/mnt/shared: ${shared_free} (${shared_percent}%)"
+}
+
+# This should work out of the box
+print_mem_free() {
+  mem_free="$(free -m | awk '/Mem:/ {print $7}')"
+  
+  mem_colour=$colour_normal
+  icon_colour=$colour_neutral
+  if [ $mem_free -lt 250 ]; then
+    mem_colour=$colour_critical
+    icon_colour=$colour_critical
+  elif [ $mem_free -lt 500 ]; then
+    mem_colour=$colour_warning
+    icon_colour=$colour_warning
+  fi
+  
+  echo -ne "${icon_colour}\uE28B${mem_colour}${mem_free}M"
+}
+
+# This depends on lm_sensors and will likely need configuring
+print_cpu_temp() {
+  cpu_temp=$(sensors -u | awk '/edge/ {getline; print $2}' | sed -r 's/([0-9]*)\.[0-9]*/\1/')
+  
+  temp_colour=$colour_normal
+  icon_colour=$colour_neutral
+  if [ $cpu_temp -gt 83 ]; then
+    temp_colour=$colour_critical
+    icon_colour=$colour_critical
+  elif [ $cpu_temp -gt 99 ]; then
+    temp_colour=$colour_warning
+    icon_colour=$colour_warning
+  fi
+  
+  echo -ne "${icon_colour}\uE3B2${temp_colour}${cpu_temp}°"
+}
+
+# cpu (from: https://bbs.archlinux.org/viewtopic.php?pid=661641#p661641)
+print_cpu_used() {
+  echo -ne "${colour_neutral}\uE3AF${colour_normal}${cpu_used}%"
+}
+
+# Configure the adapter to display above
+print_eth() {
+  eth_status=$(ip addr show dev ${eth_adapter} | awk 'NR==1 {print $9}')
+  
+  if [ "$eth_status" == "UP" ]; then
+    eth_ip=$(ip addr show dev ${eth_adapter} | awk 'NR==3 {print $2}' | sed -r 's/\/.*//')
+    icon_colour=${colour_neutral}
+    eth_colour=${colour_normal}
+  else
+    icon_colour=${colour_faded}
+  fi
+
+  echo -ne "${icon_colour}\uE0E4${eth_colour}${eth_ip}"
+}
+
+# Configure the adapter to display above, strength might need to be tweaked
+print_wlan() {
+  wlan_status=$(ip addr show dev ${wlan_adapter} | awk 'NR==1 {print $9}')
+  
+  if [ "$wlan_status" == "UP" ]; then
+    wlan_ip=$(ip addr show dev ${wlan_adapter} | awk 'NR==3 {print $2}' | sed -r 's/\/.*//')
+    
+    let wlan_strength="10 * $(cat /proc/net/wireless | awk 'NR==3 {print substr($3, 1, 2)}') / 7"
+    if [ $wlan_strength -lt 25 ]; then
+      icon_colour=${colour_critical}
+      wlan_colour=${colour_critical}
+    elif [ $wlan_strength -lt 50 ]; then
+      icon_colour=${colour_warning}
+      wlan_colour=${colour_warning}
+    else
+      icon_colour=${colour_neutral}
+      wlan_colour=${colour_normal}
+    fi
+    
+    wlan_strength="${wlan_strength}%"
+
+  else
+    icon_colour=${colour_faded}
+  fi
+
+  echo -ne "${icon_colour}\uE401${wlan_colour}${wlan_ip} ${wlan_strength}"
+}
+
+while true; do
+  # get new cpu idle and total usage
+  eval $(awk '/^cpu /{print "cpu_idle_now=" $5 "; cpu_total_now=" $2+$3+$4+$5 }' /proc/stat)
+  cpu_interval=$((cpu_total_now-${cpu_total_old:-0}))
+  # calculate cpu usage (%)
+  let cpu_used="100 * ($cpu_interval - ($cpu_idle_now-${cpu_idle_old:-0})) / $cpu_interval"
+
+  # Pipe to status bar
+  # This is where you can adjust what gets shown by adding the desired function calls
+  xsetroot -name "$(print_wlan)${space}$(print_root_free)${space}$(print_home_free)${space}$(print_cpu_used)${space}$(print_cpu_temp)${space}$(print_mem_free)${space}$(print_battery)${space}$(print_backlight)${space}$(print_volume)${space}$(print_time)$(print_date)"
+
+  # reset old rate
+  cpu_idle_old=$cpu_idle_now
+  cpu_total_old=$cpu_total_now
+  
+  # loop stats every so many seconds
+  sleep "${refresh}"
+done