From 95183eb5ebd63ee3ae4480a5022d2c132f90ba4c Mon Sep 17 00:00:00 2001
From: Robert Rosca <robert.rosca@xfel.eu>
Date: Mon, 22 Feb 2021 15:50:09 +0100
Subject: [PATCH] Add a script for easy execution of diff-only pre-commit
checks
---
bin/pre-commit-diff.sh | 12 ++++++++++++
1 file changed, 12 insertions(+)
create mode 100755 bin/pre-commit-diff.sh
diff --git a/bin/pre-commit-diff.sh b/bin/pre-commit-diff.sh
new file mode 100755
index 000000000..af24d1d81
--- /dev/null
+++ b/bin/pre-commit-diff.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+# We'd like to run the pre-commit hooks only on files that are being modified by
+# this merge request, however `CI_MERGE_REQUEST_TARGET_BRANCH_SHA` is a'premium'
+# feature according to GitLab... so this is a workaround for extracting the hash
+CI_MERGE_REQUEST_TARGET_BRANCH_NAME="${1:-master}" # Set to master or 1st input
+CI_COMMIT_SHA=$(git rev-parse HEAD)
+CI_MERGE_REQUEST_TARGET_BRANCH_SHA=$(git ls-remote origin $CI_MERGE_REQUEST_TARGET_BRANCH_NAME | cut -d$'\t' -f1)
+FILES=$(git diff $CI_COMMIT_SHA $CI_MERGE_REQUEST_TARGET_BRANCH_SHA --name-only | tr '\n' ' ')
+echo "Running pre-commit on diff from $CI_COMMIT_SHA to $CI_MERGE_REQUEST_TARGET_BRANCH_SHA ($CI_MERGE_REQUEST_TARGET_BRANCH_NAME)"
+# Pass list of modified files to pre-commit so that it only checks them
+echo $FILES | xargs pre-commit run --color=always --files
--
GitLab