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-rwxr-xr-xrust/openapi-generator-cli.sh70
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diff --git a/rust/openapi-generator-cli.sh b/rust/openapi-generator-cli.sh
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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} "$@"