Paper/scripts/requireDeps.sh

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#!/bin/sh
set -ue
# Check if an application is on the PATH.
# If it is not, return with non-zero.
_is_dep_available() {
command -v "$1" >/dev/null || (echo "$1 ${2:-was not found and is a required dependency}"; return 1)
}
if [ -z "${1:-}" ]; then
# No specific dependency was found; let's just check for all required ones.
_is_dep_available git
_is_dep_available patch
_is_dep_available mvn
# Ensure we don't have a JAVA_HOME set first.
# Maven should work fine without the JAVA_HOME var as long as the JDK is on the PATH.
if [ -z "${JAVA_HOME:-}" ]; then
_is_dep_available javac "was not found; you can download the JDK from https://adoptopenjdk.net/ or via your package manager"
fi
else
# Require all dependencies provided.
for dep in $@; do
_is_dep_available "$dep"
done
fi
# vim: set ff=unix autoindent ts=4 sw=4 tw=0 et :