Add scalafmt.sh script

scalafmt.sh

@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+
+# This is the launcher script of scalafmt-native-image (https://github.com/VirtusLab/scalafmt-native-image).
+# This script downloads and runs scalafmt-native-image version set by SCALAFMT_VERSION below.
+#
+# Download the latest version of this script at https://github.com/VirtusLab/scalafmt-native-image/raw/main/scalafmt.sh
+
+set -eu
+
+DEFAULT_SCALAFMT_VERSION="3.8.3"
+
+SCALAFMT_VERSION=""
+if test -e .scalafmt.conf; then
+  SCALAFMT_VERSION="$(cat .scalafmt.conf | grep '^version\s*=\s*"[0-9.A-Z-]*"$' | sed 's/^version[ \t]*=[ \t]*"\([0-9.A-Z-]*\)"$/\1/g')"
+fi
+
+if [ "$SCALAFMT_VERSION" == "" ]; then
+  SCALAFMT_VERSION="$DEFAULT_SCALAFMT_VERSION"
+  if test -e .scalafmt.conf; then
+    echo "Warning: no scalafmt version found in .scalafmt.conf, using $SCALAFMT_VERSION" 1>&2
+  else
+    echo "Warning: no .scalafmt.conf found, using scalafmt version $SCALAFMT_VERSION" 1>&2
+  fi
+fi
+
+GH_ORG="VirtusLab"
+GH_NAME="scalafmt-native-image"
+
+TAG="v$SCALAFMT_VERSION"
+
+if [ "$(expr substr $(uname -s) 1 5 2>/dev/null)" == "Linux" ]; then
+  arch=$(uname -m)
+  if [[ "$arch" == "aarch64" ]] || [[ "$arch" == "x86_64" ]]; then
+    SCALAFMT_URL="https://github.com/$GH_ORG/$GH_NAME/releases/download/$TAG/scalafmt-${arch}-pc-linux.gz"
+  else
+    echo "scalafmt-native-image is not supported on $arch" 1>&2
+    exit 2
+  fi
+  CACHE_BASE="$HOME/.cache/coursier/v1"
+elif [ "$(uname)" == "Darwin" ]; then
+  arch=$(uname -m)
+  CACHE_BASE="$HOME/Library/Caches/Coursier/v1"
+  if [[ "$arch" == "x86_64" ]]; then
+    SCALAFMT_URL="https://github.com/$GH_ORG/$GH_NAME/releases/download/$TAG/scalafmt-x86_64-apple-darwin.gz"
+  elif [[ "$arch" == "arm64" ]]; then
+    SCALAFMT_URL="https://github.com/$GH_ORG/$GH_NAME/releases/download/$TAG/scalafmt-aarch64-apple-darwin.gz"
+  else
+    echo "scalafmt-native-image is not supported on $arch" 1>&2
+    exit 2
+  fi
+else
+  echo "This standalone scalafmt-native-image launcher is supported only in Linux and macOS." 1>&2
+  exit 1
+fi
+
+CACHE_DEST="$CACHE_BASE/$(echo "$SCALAFMT_URL" | sed 's@://@/@')"
+SCALAFMT_BIN_PATH=${CACHE_DEST%.gz}
+
+if [ ! -f "$CACHE_DEST" ]; then
+  mkdir -p "$(dirname "$CACHE_DEST")"
+  TMP_DEST="$CACHE_DEST.tmp-setup"
+  echo "Downloading $SCALAFMT_URL" 1>&2
+  curl -fLo "$TMP_DEST" "$SCALAFMT_URL"
+  mv "$TMP_DEST" "$CACHE_DEST"
+fi
+
+if [ ! -f "$SCALAFMT_BIN_PATH" ]; then
+  gunzip -k "$CACHE_DEST"
+fi
+
+if [ ! -x "$SCALAFMT_BIN_PATH" ]; then
+  chmod +x "$SCALAFMT_BIN_PATH"
+fi
+
+exec "$SCALAFMT_BIN_PATH" "$@"