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create_sprites.sh
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#!/usr/bin/env bash
#
# (C) Copyright 2017, Anthony Gaudino
# (C) Copyright 2022, Matt Topper <[email protected]> and UberEther contributors
#
# The following script is derivative work of Anthony's sprite generator script found at:
# https://github.com/Piotr1215/sprites/blob/master/sprites/create_sprites.sh
# which is licensed via the GPL. This code therefore is also licensed under the terms
# of the GNU General Public License.
#
#
# Batch creates sprite files for PlantUml
#
# Given a directory can convert all PNG files to PlantUml sprite files.
#
# The generated sprites files formats are based on the ones introduced in
# PlantUml 1.2017.19.
#
# This script assumes plantuml is in PATH.
#
# Help usage message
usage="Batch creates sprite files for PlantUml.
$(basename "$0") [options] prefix
options:
-p directory path to process Default: ./
-g sprite graylevel Default: 16
prefix: a prefix that is added to the sprite name"
# Default arguments values
dir="./" # Directory path to process Default: ./
graylevel=16 # Number of grayscale colors Default: 16
prefix="" # Prefix for sprites names, avoids having
prefixupper="" # two sprites with same name on STDLIB
########################################
#
# Main function
#
########################################
main () {
# Get arguments
while getopts p:w:h:g:s option
do
case "$option" in
p) dir="$OPTARG";;
w) width="$OPTARG";;
h) height="$OPTARG";;
g) graylevel="$OPTARG";;
:) echo "$usage"
exit 1
;;
\?) echo "$usage"
exit 1
;;
esac
done
# Get mandatory argument
shift $(($OPTIND-1))
prefix=$( echo $1 | tr '[:upper:]' '[:lower:]')
prefixupper=$(echo $1 | tr '[:lower:]' '[:upper:]')
# Check mandatory argument
if [ -z "$prefix" ]
then
echo "Please specify a prefix!"
echo "$usage"
exit 1
fi
# Change dir to where images are
if [ ! -d "${dir}" ]
then
echo "Please specify a valid directory"
echo "$usage"
exit 1
fi
cd "$dir"
# Setup Index Generation
echo "# $dir" > index.md
echo "### Overview" >> index.md
echo "| Name | Macro | Image | Url |" >>index.md;
echo "|-------|--------|-------|-----|" >>index.md;
process_png
}
########################################
#
# Generate PlantUml sprite
#
########################################
process_png () {
for i in *.png
do
[ -f "$i" ] || continue
convert "$i" -resize 48x48 -channel RGBA -matte -colorspace gray -transparent none -average "$i"
mv "$i" "${i//-/_}"
done
for i in *.png
do
[ -f "$i" ] || continue
filename=$(echo $i | sed -e 's/.png$//') # Filename without extension
filenameupper=$(echo $filename | tr '[:lower:]' '[:upper:]') # Filename without extension in uppercase
spritename="${prefix}_$filename" # Sprite name is composed by prefix_filename
spritenameupper="${prefixupper}_$filenameupper" # Sprite name in uppercase
spritestereo="$prefixupper $filenameupper" # Sprite stereotype is uppercase prefix followed by uppercase filename
stereowhites=$(echo $spritestereo | sed -e 's/./ /g') # This is just whitespace to make output nicer
echo "@startuml" > $filename.puml
echo -e "$(plantuml -encodesprite $graylevel $i | sed -e '1!b' -e 's/\$/$'${prefix}_'/')\n" >> $filename.puml
echo "!define $spritenameupper(_color) SPRITE_PUT( $stereowhites $spritename, _color)" >> $filename.puml
echo "!define $spritenameupper(_color, _scale) SPRITE_PUT( $stereowhites $spritename, _color, _scale)" >> $filename.puml
echo "!define $spritenameupper(_color, _scale, _alias) SPRITE_ENT( _alias, $spritestereo, $spritename, _color, _scale)" >> $filename.puml
echo "!define $spritenameupper(_color, _scale, _alias, _shape) SPRITE_ENT( _alias, $spritestereo, $spritename, _color, _scale, _shape)" >> $filename.puml
echo "!define $spritenameupper(_color, _scale, _alias, _shape, _label) SPRITE_ENT_L(_alias, $spritestereo, _label, $spritename, _color, _scale, _shape)" >> $filename.puml
echo "!define $spritenameupper(_alias) ENTITY(rectangle,black,$spritename,_alias,$spritenameupper)" >> $filename.puml
echo "!define $spritenameupper(_alias, _label) ENTITY(rectangle,black,$spritename,_label, _alias,$spritenameupper)" >> $filename.puml
echo "!define $spritenameupper(_alias, _label, _shape) ENTITY(_shape,black,$spritename,_label, _alias,$spritenameupper)" >> $filename.puml
echo "!define $spritenameupper(_alias, _label, _shape, _color) ENTITY(_shape,_color,$spritename,_label, _alias,$spritenameupper" >> $filename.puml
echo "skinparam folderBackgroundColor<<$prefixupper $filenameupper>> White" >> $filename.puml
echo "@enduml" >> $filename.puml
# Populate the index.md
echo "| $filename | ${prefixupper}_$filenameupper |  |$filename.puml |" >> index.md
done
}
main "$@"