piston/runtimes/scaffold.sh

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#!/usr/bin/env sh
if [[ $# -eq 0 ]]; then
echo "Usage: $0 <language name> [runtime name]"
echo
echo "language name: The name of the language to add, e.g. javascript"
echo "runtime name: The name of the runtime to add, e.g. node"
echo " In most cases runtime won't be required, e.g. python3 is both a language and runtime"
exit 1;
fi
LANGUAGE=$1
RUNTIME=$1
NAME=$1
if [[ $# -eq 2 ]]; then
RUNTIME=$2
NAME=$RUNTIME-$LANGUAGE
fi
if grep "./$NAME.nix" default.nix > /dev/null; then
echo "ERROR: $NAME already exists"
echo "Remove it from default.nix and retry if this is intended"
exit 1
else
sed -i '$d' default.nix
echo " \"$NAME\" = import ./$NAME.nix args;" >> default.nix
sed -e 's/%LANGUAGE%/'"$LANGUAGE"'/g' \
-e 's/%RUNTIME%/'"$RUNTIME"'/g' \
-e 's/%NAME%/'"$NAME"'/g' \
.scaffold.nix > $NAME.nix
echo "}" >> default.nix
git add $NAME.nix default.nix
echo "Scaffolded $NAME"
echo "Edit $NAME.nix to get started"
echo "Once you are done, run ./piston test $NAME to test it"
fi