drone-plugin-check-changes/check-vcs-changes.sh

#!/bin/sh
set -e -x

if [ -n "$PLUGIN_IGNORE" -a \( -n "$PLUGIN_POSITIVE" -o -n "$PLUGIN_NEGATIVE" \) ]; then
  set "$PLUGIN_IGNORE" "$PLUGIN_POSITIVE" "$PLUGIN_NEGATIVE"
fi

if git diff --name-only "$DRONE_COMMIT_AFTER" "$DRONE_COMMIT_BEFORE" | `dirname "$0"`/check-some-are-unignored.sh "$1"; then
  if [ -n "$2" ]; then touch "$2"; fi
else
  if [ -n "$3" ]; then touch "$3"; fi
fi