fix-protoc-jar.sh

#!/usr/bin/env bash

set -o errexit
set -o nounset

FULL_PATH=$(realpath "$1")

TMPDIR="$(mktemp -d)"

set -o xtrace

for i in $(unzip -t "$FULL_PATH" | grep -Po '(?<=testing: )bin[^ ]*/protoc'); do

mkdir -p $(dirname "$TMPDIR"/"$i")

cat <<EOF > "$TMPDIR"/"$i"
#!/usr/bin/env sh
set -o xtrace
protoc \$@
EOF

done

cd $TMPDIR
zip "$FULL_PATH" $(find . -name protoc)

Usage:

~/.coursier/cache/v1/https/repo1.maven.org/maven2/com/github/os72/protoc-jar/3.4.0/protoc-jar-3.4.0.jar