Merge pull request #22 from axelguilmin/master

Add option to run swiftlint only on changed files

Author: norio-nomura

README.md

@@ -27,6 +27,10 @@ jobs:
         uses: norio-nomura/[email protected]
         with:
           args: --strict
+      - name: GitHub Action for SwiftLint (Only files changed in the PR)
+        uses: norio-nomura/[email protected]
+        env:
+          DIFF_BASE: ${{ github.base_ref }}
 ```
 
 ## Secrets

entrypoint.sh

@@ -11,4 +11,15 @@ function convertToGitHubActionsLoggingCommands() {
     sed -E 's/^(.*):([0-9]+):([0-9]+): (warning|error|[^:]+): (.*)/::\4 file=\1,line=\2,col=\3::\5/'
 }
 
-set -o pipefail && swiftlint "$@" | stripPWD | convertToGitHubActionsLoggingCommands
+if ! ${DIFF_BASE+false};
+then
+	changedFiles=$(git --no-pager diff --name-only FETCH_HEAD $(git merge-base FETCH_HEAD $DIFF_BASE) -- '*.swift')
+
+	if [ -z "$changedFiles" ]
+	then
+		echo "No Swift file changed"
+		exit
+	fi
+fi
+
+set -o pipefail && swiftlint "$@" -- $changedFiles | stripPWD | convertToGitHubActionsLoggingCommands