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#!/usr/bin/env bash
####
# Save as openapi-generator-cli on your PATH. chmod u+x. Enjoy.
#
# This script will query github on every invocation to pull the latest released version
# of openapi-generator.
#
# If you want repeatable executions, you can explicitly set a version via
# OPENAPI_GENERATOR_VERSION
# e.g. (in Bash)
# export OPENAPI_GENERATOR_VERSION=3.1.0
# openapi-generator-cli.sh
# or
# OPENAPI_GENERATOR_VERSION=3.1.0 openapi-generator-cli.sh
#
# This is also helpful, for example, if you want want to evaluate a SNAPSHOT version.
#
# NOTE: Jars are downloaded on demand from maven into the same directory as this script
# for every 'latest' version pulled from github. Consider putting this under its own directory.
####
set -o pipefail
for cmd in {mvn,jq,curl}; do
if ! command -v ${cmd} > /dev/null; then
>&2 echo "This script requires '${cmd}' to be installed."
exit 1
fi
done
function latest.tag {
local uri="https://api.github.com/repos/${1}/releases"
local ver=$(curl -s ${uri} | jq -r 'first(.[]|select(.prerelease==false)).tag_name')
if [[ $ver == v* ]]; then
ver=${ver:1}
fi
echo $ver
}
ghrepo=openapitools/openapi-generator
groupid=org.openapitools
artifactid=openapi-generator-cli
ver=${OPENAPI_GENERATOR_VERSION:-$(latest.tag $ghrepo)}
jar=${artifactid}-${ver}.jar
cachedir=${OPENAPI_GENERATOR_DOWNLOAD_CACHE_DIR}
DIR=${cachedir:-"$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"}
if [ ! -d "${DIR}" ]; then
mkdir -p "${DIR}"
fi
if [ ! -f ${DIR}/${jar} ]; then
repo="central::default::https://repo1.maven.org/maven2/"
if [[ ${ver} =~ ^.*-SNAPSHOT$ ]]; then
repo="central::default::https://oss.sonatype.org/content/repositories/snapshots"
fi
mvn org.apache.maven.plugins:maven-dependency-plugin:2.9:get \
-DremoteRepositories=${repo} \
-Dartifact=${groupid}:${artifactid}:${ver} \
-Dtransitive=false \
-Ddest=${DIR}/${jar}
fi
java -ea \
${JAVA_OPTS} \
-Xms512M \
-Xmx1024M \
-server \
-jar ${DIR}/${jar} "$@"
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