Add community scripts for i3blocks

.local/bin/i3scripts/contrib/README.md

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+# i3-blocks-contrib
+
+A collection of useful blocks for [i3blocks](https://github.com/vivien/i3blocks), for the amazing [i3](https://i3wm.org) window manager.
+
+
+## Configuration
+
+Some examples on how to configure these in your `i3blocks` config file:
+
+- @rosshadden's [i3blocks.conf](https://github.com/rosshadden/dotfiles/blob/master/src/.config/i3/i3blocks.conf)
+- @oppenlander's [i3blocks.conf](https://github.com/oppenlander/dotfiles/blob/master/i3/i3blocks.conf)
+
+
+## Contributing
+
+As hinted by the name, this is intended to be openly contributed to by the community.
+There is no official contributing guide, but please try to fit in to the style and themes found in our existing blocks.
+We use a somewhat ad-hock [YUIDoc](http://yui.github.io/yuidoc/) documentation syntax.

.local/bin/i3scripts/contrib/bandwidth

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+#!/bin/bash
+
+################################
+# Shows bandwidth
+#
+# @param {String(tx|rx)} type: The bandwidth type to check
+# @return {Number(kB/s)}: Speed of the interface
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+type=$BLOCK_INSTANCE
+
+file=/tmp/i3blocks_bandwidth_$type
+touch $file
+
+prev=$(cat $file)
+cur=0
+
+netdir=/sys/class/net
+for iface in $(ls -1 $netdir); do
+	# Skip the loopback interface
+	if [ "$iface" == "lo" ]; then continue; fi
+
+	f=$netdir/$iface/statistics/${type}_bytes
+	n=$(cat $f)
+	cur=$(expr $cur + $n)
+done
+
+delta=$(calc "$cur - $prev")
+echo "$(calc "$delta / 1000") kB/s"
+
+# store result
+echo $cur > $file

.local/bin/i3scripts/contrib/battery

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+#!/usr/bin/env bash
+
+################################
+# Shows info about connected batteries.
+#
+# Dependencies:
+# - acpi
+#
+# @return {Number(%)}: Current battery charge
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+# Exit if no battery was found
+if [ "$(acpi)" == "" ]; then exit 0; fi
+
+state=$(acpi | sed -n 's/Battery [0-9]: \([A-Z]\).*, .*/\1/p')
+chg=$(acpi | sed -n 's/Battery [0-9]:.*, \([0-9]\{1,3\}\)%.*/\1/p')
+
+# Charging or Unknown
+if [ $state = "C" ] || [ $state = "U" ]; then
+	icon=""
+else
+	if [ $chg -le 10 ]; then
+		icon=""
+		status=33
+	else
+		icon=""
+	fi
+fi
+
+full="$icon $chg%"
+short="$chg%"
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/bauerbill

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+#!/usr/bin/env bash
+
+################################
+# Shows AUR packages that need updated.
+#
+# Dependencies:
+# - checkupdates
+# - bauerbill
+# - [notify-send]
+#
+# @return {Number}: Outdated packages
+################################
+
+dir=$(dirname "$0")
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+archPackages=$(checkupdates)
+allPackages=$(bauerbill -Quq --aur)
+numArchPackages=$(numLines "$archPackages")
+numAllPackages=$(numLines "$allPackages")
+numAurPackages=$(calc "$numAllPackages - $numArchPackages")
+
+if [ "$numAllPackages" -le "$numArchPackages" ]; then
+	numAurPackages=$numAllPackages
+fi
+
+full=$numAurPackages
+short=$full
+
+case $BLOCK_BUTTON in
+	# right click: show packages
+	3)
+		aurPackages=$(diff -y <(echo "$archPackages") <(echo "$allPackages") | awk -p '{ print $3 }')
+		notify-send "AUR packages" "$aurPackages"
+	;;
+esac
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/brightness

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+#!/usr/bin/env bash
+
+################################
+# Shows current brightness
+#
+# dependencies:
+# - xbacklight
+#
+# @return {Number}: Current brightness
+################################
+
+case $BLOCK_BUTTON in
+	# right click
+	# set to `20
+	3) xbacklight -set 20 ;;
+
+	# scroll up
+	# raise brightness
+	4) xbacklight -inc 10 ;;
+
+	# scroll down
+	# lower brightness
+	5) xbacklight -dec 10 ;;
+esac
+
+printf "%.0f" "$(xbacklight -get)"

.local/bin/i3scripts/contrib/cpu

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+#!/usr/bin/env bash
+
+################################
+# Shows info about the CPU
+#
+# Dependencies:
+# - [notify-send]
+#
+# @return {Number(%)}: CPU usage
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+read cpu a b c previdle rest < /proc/stat
+prevtotal=$(calc "$a + $b + $c + $previdle")
+sleep 0.5
+read cpu a b c idle rest < /proc/stat
+total=$(calc "$a + $b + $c + $idle")
+
+CPU=$(calc "100 * (($total - $prevtotal) - ($idle - $previdle)) / ($total - $prevtotal)")
+
+full="$CPU%"
+short=$full
+
+if [ $CPU -ge 90 ]; then
+	status=33
+fi
+
+case $BLOCK_BUTTON in
+
+	# right click: show packages
+	3)
+		n=16
+		summary=$(ps -eo pcpu,pmem,pid,comm --sort=-pcpu | head -$n)
+		notify-send "Top $n CPU-eaters" "$summary"
+	;;
+
+esac
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/date

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+#!/usr/bin/env bash
+
+################################
+# Shows current date
+#
+# @param {String} format: The format of the date
+# @return {Date}: Current date
+################################
+
+format=${BLOCK_INSTANCE:-"%Y-%m-%d"}
+
+date +"$format"
+date +"%m-%d"

.local/bin/i3scripts/contrib/disk

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+#!/usr/bin/env bash
+
+################################
+# Shows info about a specified mount point
+#
+# Dependencies:
+# - [notify-send]
+#
+# @param {String} disk: The mount point to check
+# @return {Number(%)}: Space used on the disk
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+disks=$(lsblk | tail -n +2 | awk '{ print $7 }' | sed '/^\s*$/d' | sort)
+let numDisks=$(echo "$disks" | wc -l)
+let diskNum=$(getCache 1)
+
+getDisk() {
+	echo "$disks" | sed -n "$diskNum p"
+}
+disk=$(getDisk)
+
+case $BLOCK_BUTTON in
+	# right click: show details
+	# TODO: fix
+	3)
+		local summary=$(du -h --max-depth=1 $disk)
+		notify-send "Disk usage" "$summary"
+	;;
+	# scroll up: cycle disks
+	4)
+		diskNum=$[$(getCache) - 1]
+		if (( diskNum <= 0 )); then
+			diskNum=$numDisks
+		fi
+		setCache $diskNum
+		disk=$(getDisk)
+	;;
+	5)
+	# scroll down: cycle disks
+		diskNum=$[$(getCache) + 1]
+		if (( diskNum >= numDisks + 1 )); then
+			diskNum=1
+		fi
+		setCache $diskNum
+		disk=$(getDisk)
+	;;
+esac
+
+usage=$(df -h $disk | sed -n '2 p')
+usage=($usage)
+
+if [ ${usage[4]%?} -ge 90 ]; then
+	status=33
+fi
+
+full="$disk ${usage[4]}"
+short="$full"
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/keyboard

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+#!/usr/bin/env bash
+
+################################
+# Shows current keyboard layout.
+# Allows layout toggling.
+#
+# Dependencies:
+# - [Ross' key script](https://github.com/rosshadden/dotfiles/blob/master/src/lib/keys.sh)
+#
+# @return {String}: Current keyboard layout
+################################
+
+keys=$HOME/bin/keys
+
+full=""
+short=""
+status=0
+
+case $BLOCK_BUTTON in
+	# right click: toggle key variant
+	3) $keys toggle ;;
+esac
+
+layout=$($keys get)
+
+full=$layout
+short=${layout:0:1}
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/memory

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+#!/usr/bin/env bash
+
+################################
+# Shows info about the RAM
+#
+# Dependencies:
+# - [notify-send]
+#
+# @return {Number(%)}: RAM usage
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+exec 6< /proc/meminfo
+read a total b <&6
+read a free b <&6
+read a b c <&6
+read a buffer b <&6
+read a cached b <&6
+
+MEM=$(calc "100 * ($total - ($free + $buffer + $cached)) / $total")
+
+full="$MEM%"
+short=$full
+
+if [ $MEM -ge 80 ]; then
+	status=33
+fi
+
+case $BLOCK_BUTTON in
+	# right click: show packages
+	3)
+		n=16
+		summary=$(ps -eo pmem,pcpu,pid,comm --sort=-pmem | head -$n)
+		notify-send "Top $n RAM-eaters" "$summary"
+	;;
+esac
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/mpc

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+#!/usr/bin/env bash
+
+################################
+# Shows info from media players.
+#
+# Dependencies:
+# - mpc
+#
+# @return {String}: Current media info
+################################
+
+full=""
+short=""
+status=0
+
+format=${BLOCK_INSTANCE:-'[[%artist% - ]%title%[ \[%album%\]]]|[%file%]'}
+
+current=$(mpc current)
+currentLong=$(mpc current -f "$format")
+state=playing
+
+if [[ "$current" ]]; then
+	# Make icon mapping
+	declare -A icons
+	icons["playing"]=""
+	icons["paused"]=""
+	icons["stopped"]=""
+
+	# Determine which icon to use
+	icon=${icons[$state]}
+
+	full="$currentLong $icon"
+	short="$current $icon"
+fi
+
+echo "$full"
+echo "$short"
+exit "$status"

.local/bin/i3scripts/contrib/network

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+#!/usr/bin/env bash
+
+################################
+# Shows IP address of a given interface
+#
+# @param {String} interface: The network interface to check
+# @return {String(IP)}: IP address of the interface
+################################
+
+dir=$(dirname $0)
+source "$dir/util.sh"
+
+full=""
+short=""
+status=0
+
+interface=${BLOCK_INSTANCE:-eth0}
+
+netPath=/sys/class/net
+interfacePath=$(echo $netPath/$interface)
+# Expand wildcard interfaces
+interface=${interfacePath#$netPath/}
+
+state=$(cat $interfacePath/operstate)
+
+if [ $state == "up" ]; then
+	ips=$(ip addr show $interface | perl -n -e'/inet (.+)\// && print $1')
+	ip=${ips:-0.0.0.0}
+
+	full=$ip
+	short=$full
+fi
+
+echo "$full"
+echo "$short"
+exit $status

.local/bin/i3scripts/contrib/pacman

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+#!/usr/bin/env bash
+
+################################
+# Shows pacman packages that need updated.
+#
+# dependencies:
+# - checkupdates
+# - [notify-send]
+#
+# @return {Number}: Outdated packages
+################################
+
+dir=$(dirname "$0")
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+packages=$(checkupdates)
+numPackages=$(numLines "$packages")
+
+full=$numPackages
+short=$full
+
+echo "$full"
+echo "$short"
+
+case $BLOCK_BUTTON in
+	# right click: show packages
+	3) notify-send "Pacman packages" "$packages" ;;
+esac
+
+exit $status

.local/bin/i3scripts/contrib/playerctl

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+#!/usr/bin/env bash
+
+################################
+# Shows info from media players.
+#
+# TODO: make output format configurable
+#
+# Dependencies:
+# - playerctl
+#
+# @return {String}: Current media info
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+# Exit if no player found
+players=$(playerctl -l)
+if [[ ! $players ]]; then exit 0; fi
+
+artist=$(playerctl metadata artist)
+title=$(playerctl metadata title)
+album=$(playerctl metadata album)
+state=$(playerctl status)
+
+if [[ "$title" ]]; then
+	# Make icon mapping
+	declare -A icons
+	icons["Playing"]=""
+	icons["Paused"]=""
+	icons["Stopped"]=""
+
+	# Determine which icon to use
+	icon=${icons[$state]}
+
+	full="$title"
+	if [[ "$artist" ]]; then full="$artist - $full"; fi
+
+	short="$full $icon"
+	if [[ "$album" ]]; then full="$full [$album]"; fi
+	full="$full $icon"
+fi
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/sound

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+#!/usr/bin/env bash
+
+################################
+# Shows info about sound/volume.
+# Allows simple volume controls.
+#
+# Thanks to [@EliteTK](https://gist.github.com/EliteTK/36d061fa24372fb70312),
+# for the big speed gain when switching to `ponymix`
+#
+# Dependencies:
+# - ponymix
+# - ttf-font-icons
+#
+# @return {Number}: Current volume
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+step=${BLOCK_INSTANCE:-5}
+
+getVolume() {
+	ponymix get-volume
+}
+
+isMuted() {
+	ponymix is-muted
+}
+
+case $BLOCK_BUTTON in
+	# right click
+	# mute/unmute
+	3) ponymix toggle >/dev/null ;;
+
+	# scroll up
+	# raise volume
+	4) ponymix increase $step >/dev/null ;;
+
+	# scroll down
+	# lower volume
+	5) ponymix decrease $step >/dev/null ;;
+esac
+
+vol=$(getVolume)
+
+# level-based icon
+if (( $vol == 0 )); then
+	icon=""
+elif (( $vol < 34 )); then
+	icon=""
+elif (( $vol < 67 )); then
+	icon=""
+else
+	icon=""
+fi
+
+# determine mute status
+if isMuted; then
+	status=33
+fi
+
+full="$icon $vol%"
+short=$vol
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/time

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+#!/usr/bin/env bash
+
+################################
+# Shows current time
+#
+# @param {String} format: The format of the time
+# @return {Time}: Current time
+################################
+
+format=${BLOCK_INSTANCE:-"%H:%M:%S"}
+
+date +"$format"
+date +"%H:%M"

.local/bin/i3scripts/contrib/util.sh

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+################################
+# Calculates a given expression
+#
+# Dependencies:
+# - bc
+#
+# @param {String} 1: The expression to calculate
+# @return {Number}: The result of the expression
+################################
+calc() {
+	echo "$1" | bc
+}
+
+################################
+# Counts lines in text, accounting for empty values
+#
+# @param {String} 1: The input text
+# @return {Number}: The number of lines
+################################
+numLines() {
+	if [[ "$1" == "" ]]; then
+		echo 0
+	else
+		echo "$1" | wc -l
+	fi
+}
+
+cacheDir=".cache"
+cacheFile="$cacheDir/i3-blocks-contrib-${BLOCK_NAME}"
+
+if [[ -z $cacheDir ]]; then
+	mkdir $cacheDir
+fi
+
+getCache() {
+	cat $cacheFile || echo $1
+}
+
+setCache() {
+	echo "$1" > $cacheFile
+}

.local/bin/i3scripts/contrib/weather

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+#!/usr/bin/env bash
+
+################################
+# Shows info about the weather (in Cincinnati) from accuweather.com
+#
+# TODO: completely rewrite, probably using openweather APIs
+# TODO: make location configurable
+# TODO: make temperature unit configurable
+#
+# @return {Number(degrees Fahrenheit)}: Current temperature in Cincinnati
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+URL='http://www.accuweather.com/en/us/cincinnati-oh/45212/weather-forecast/350126'
+SITE="$(curl -s "$URL")"
+
+weather="$(echo "$SITE" | awk -F\' '/acm_RecentLocationsCarousel\.push/{print $13 }'| head -1)"
+temp="$(echo "$SITE" | awk -F\' '/acm_RecentLocationsCarousel\.push/{print $10 }'| head -1)"
+
+if [[ $weather == *thunder* || $weather == *Thunder* ]]; then
+    icon=""
+else
+    if [[ $weather == *rain* || $weather == *Rain* ]]; then
+        icon=""
+    else
+        if [[ $weather == *snow* || $weather == *Snow* ]]; then
+                icon="❄"
+        else
+            if [[ $weather == *cloud* || $weather == *Cloud* ]]; then
+                icon=""
+            else
+                icon=""
+            fi
+        fi
+    fi
+fi
+
+full="$icon $temp°"
+short="$temp°"
+
+echo $full
+echo $short
+exit $status

.local/bin/i3scripts/contrib/yaourt

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+#!/usr/bin/env bash
+
+################################
+# Shows AUR packages that need updated.
+#
+# Dependencies:
+# - checkupdates
+# - yaourt
+# - [notify-send]
+#
+# @return {Number}: Outdated packages
+################################
+
+dir=$(dirname $0)
+source $dir/util.sh
+
+full=""
+short=""
+status=0
+
+archPackages=$(checkupdates)
+allPackages=$(yaourt -Quaq)
+numArchPackages=$(numLines "$archPackages")
+numAllPackages=$(numLines "$allPackages")
+numAurPackages=$(calc "$numAllPackages - $numArchPackages")
+
+if [ $numAllPackages -le $numArchPackages ]; then
+	numAurPackages=$numAllPackages
+fi
+
+full=$numAurPackages
+short=$full
+
+case $BLOCK_BUTTON in
+	# right click: show packages
+	3)
+		aurPackages=$(diff -y <(echo "$archPackages") <(echo "$allPackages") | awk -p '{ print $3 }')
+		notify-send "AUR packages" "$aurPackages"
+	;;
+esac
+
+echo $full
+echo $short
+exit $status