Export PlantUML diagrams using Docker PlantUML Server

exportPlantuml.sh

#!/usr/bin/env bash
########################
# Exports PlantUML diagrams using a Docker PlantUML Server.
# ARGS:
# 	$1 : Target directory to recursively search 
# CONFIG:
# 	$port 		: Port to bind the PlantUML Server to
#	$dockerName	: Name of the Docker container
# 	$fileExt 	: File extensions that belong to PlantUML
# 	$dryRun 	: Detect files but not process them
########################
set -e

port=7985
dockerName=plantuml-exporter
fileExt="puml|pu|plantuml"
targetDir=${1:-.}
dryRun=false

function setup {
	if ! $dryRun ; then
		echo "Starting Docker" > /dev/tty
		docker run -d --rm -p $port:8080 --name $dockerName plantuml/plantuml-server:jetty
		sleep 5
	fi
}

function shutdown {
	if ! $dryRun ; then
		echo "Stopping Docker" > /dev/tty
		docker stop $dockerName
	fi
}

function run_file {
	hexValue=$(hexdump -e '16/1 "%02x"' "$1")
	url="http://localhost:$port/png/~h$hexValue"

	filename="$(echo "$1" | sed -r "s/(.+)\..+/\1/").png"
	if ! $dryRun ; then
		wget $url -O "$filename"
	else
		echo $url $filename > /dev/tty
	fi
}

echo -e "Target Directory: $targetDir\n"
setup

for fp in $(find $targetDir -regextype posix-extended -regex ".*\.($fileExt)" -type f)
do
	echo "=================="
	echo $fp
	echo "=================="

	run_file $(realpath $fp)
done

shutdown