homebrew doesn't exist about openapi-generator HOT 9 CLOSED

#!/usr/bin/env bash

set -io pipefail

ver=${version:-3.0.0-SNAPSHOT}
groupid=org.openapitools
artifactid=openapi-generator-cli
jar=openapi-generator-cli-${ver}.jar
repo="https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli"
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

if [[ ${ver} =~ ^.*-SNAPSHOT$ ]]; then
    repo="https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli"
fi

if [ ! -f ${DIR}/${jar} ]; then
  if ! command -v mvn > /dev/null; then
	>&2 echo "This script requires maven to be installed."
    exit 1
  fi
  mvn org.apache.maven.plugins:maven-dependency-plugin:2.8:get \
    -DrepoUrl=${repo} \
    -Dartifact=${groupid}:${artifactid}:${ver} \
    -Dtransitive=false \
    -Ddest=${DIR}/${jar}
fi

java -ea                          \
  ${JAVA_OPTS}                    \
  -Xms512M                        \
  -Xmx1024M                       \
  -server                         \
  -jar ${DIR}/${jar} "$@"

# Uses 3.0.0-SNAPSHOT by default
$ ./openapi-generator help
usage: openapi-generator-cli <command> [<args>]

The most commonly used openapi-generator-cli commands are:
    config-help   Config help for chosen lang
    generate      Generate code with chosen lang
    help          Display help information
    langs         Shows available languages (generators)
    meta          MetaGenerator. Generator for creating a new template set and configuration for Codegen.  The output will be based on the language you specify, and includes default templates to include.
    validate      Validate specification
    version       Show version information

See 'openapi-generator-cli help <command>' for more information on a specific
command.

# Can target specific versions with environment variable "version"
# fails because we haven't released
$ version=3.0.0 ./openapi-generator help