wordmoji.sh

#!/bin/bash


convert='/usr/local/bin/convert'

# flight check: must have imagemagick
if [ ! $(which $convert) ]; then
	echo 'Error: `convert` required'
	exit;
fi;

# flight check: must pass arg
if [ $# -eq 0 ]; then
	echo "Usage:"
	echo "bash ${0} <word>"
	exit;
fi

while [ ! $# -eq 0 ]
do
	case "$1" in
		--help | -h)
			echo "Usage:"
			echo "${0} <filename>"
			echo "--help | -h  Show this"
			echo "--debug      Print some extra info"
			echo "--circle     Enlarge border radius"
			exit;
			;;
		--debug)
			shift
			debug=true
			;;
		--circle)
			shift
			circle=true
			;;
		*)
			word="$1"
			shift
			;;
	esac
done


if [ -z "$word" ]; then
	echo 'Error: input not valid'
	exit;
fi;

wordescape="${word//[[:space:]]/-}"
wordimage="base-$wordescape.png"
wordoutput="$wordescape.png"

if [ ! -z $debug ]; then
	echo "What are we making:"
	echo 'word: ' "$word"
	echo 'wordescape: ' "$wordescape"
	echo 'wordimage: ' "$wordimage"
	echo 'wordoutput: ' "$wordoutput"
	echo
fi


fontpath=$HOME'/Library/Fonts/SourceSansPro-Bold.otf'
if [ -f $fontpath ]; then
	fontparam="-font $fontpath";
else
	fontparam=''
fi


# gen image
$convert -size 128x128 -gravity center -background white -fill black $fontparam label:"\ $word " $wordimage

# remove excess
$convert $wordimage -trim $wordimage


padding=10

# add uniform padding to ensure space for background
$convert $wordimage -bordercolor none -border $padding $wordimage

# extract dimensions
dims=$(convert $wordimage -print "%wx%h\n" /dev/null)
imgw="$(cut -d'x' -f1 <<<$dims)"
imgh="$(cut -d'x' -f2 <<<$dims)"

# calc new size
newimgw=$(expr $imgw + $padding) # we don't need to account for padding on both sides, we're just creating some buffer
newimgh=$(expr $imgh + $padding)

# top left corner from 0x0
topleftx=5
toplefty=5

# bottom right corner from 0x0
bottomrightx=$(expr $newimgw - $topleftx)
bottomrighty=$(expr $newimgh - $toplefty)

radius=10

if [ ! -z $circle ]; then
	radius=$(expr $newimgw / 2)
fi

if [ ! -z $debug ]; then
	echo "Image specs:"
	echo 'trimmed w: ' $imgw
	echo 'trimmed h: ' $imgh
	echo 'new w: ' $newimgw
	echo 'new h: ' $newimgh
	echo 'topleftx: ' $topleftx
	echo 'toplefty: ' $toplefty
	echo 'bottomrightx: ' $bottomrightx
	echo 'bottomrighty: ' $bottomrighty
	echo 'radius: ' $radius
	echo
fi

output="final-$word.png";
$convert -size "${newimgw}x${newimgh}" xc:none -fill white -gravity center \
    -draw "roundrectangle ${topleftx},${toplefty} $bottomrightx,$bottomrighty ${radius},${radius}" \
	-draw "image over 0,0 0,0 '$wordimage'" \
	-resize '128x128>'  $wordoutput

echo $wordoutput

# clean up
rm $wordimage