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#!/usr/bin/env bash
#**************************************************************************
#* *
#* OCaml *
#* *
#* David Allsopp, OCaml Labs, Cambridge. *
#* *
#* Copyright 2021 David Allsopp Ltd. *
#* *
#* All rights reserved. This file is distributed under the terms of *
#* the GNU Lesser General Public License version 2.1, with the *
#* special exception on linking described in the file LICENSE. *
#* *
#**************************************************************************
set -e
# Hygiene Checks: check that Changes has been updated in PRs
# One of the following must be true:
# - A commit in the PR alters the Changes file
# - The no-change-entry-needed label is applied to the PR
API_URL="$1"
shift 1
AUTH="authorization: Bearer $GITHUB_TOKEN"
# We need all the commits in the PR to be available
. tools/ci/actions/deepen-fetch.sh
MSG='Check Changes has been updated'
COMMIT_RANGE="$MERGE_BASE..$PR_HEAD"
LABEL='no-change-entry-needed'
# Check if Changes has been updated in the PR
if ! git diff "$COMMIT_RANGE" --name-only --exit-code Changes > /dev/null; then
echo -e "$MSG: \e[32mYES\e[0m"
elif curl --silent --header "$AUTH" "$API_URL/labels" | grep -q "$LABEL"; then
echo -e "$MSG: \e[33mSKIP\e[0m"
else
echo -e "$MSG: \e[31mNO\e[0m"
cat <<"EOF"
------------------------------------------------------------------------
Most contributions should come with a message in the Changes file, as
described in our contributor documentation:
https://github.com/ocaml/ocaml/blob/trunk/CONTRIBUTING.md#changelog
Some very minor changes (typo fixes for example) may not need
a Changes entry. In this case, you may explicitly disable this test by
using the "no-change-entry-needed" label on the github pull request.
------------------------------------------------------------------------
EOF
exit 1
fi
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