gnome-shell/.gitlab-ci/checkout-mutter.sh
Florian Müllner 9e30afe678 ci: Try falling back to stable branch before HEAD
For non-MR pipelines, we check for a matching branch or tag name
in mutter. As we use the same naming policy for stable branches
and branch at about the same time, this works generally fine for
branches.

However for tags, it is less unlikely that there is no matching
tag in mutter, in particularly late in a stable cycle when most
changes are translation updates (which are much rare in mutter
than gnome-shell).

Before falling back to main (which is doomed to fail in that case),
try to guess the correct stable branch based on the tag name.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2293>
2022-07-04 17:47:36 +02:00

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#!/usr/bin/bash
fetch() {
local remote=$1
local ref=$2
git fetch --quiet --depth=1 $remote $ref 2>/dev/null
}
mutter_target=
echo -n Cloning into mutter ...
if git clone --quiet --depth=1 https://gitlab.gnome.org/GNOME/mutter.git; then
echo \ done
else
echo \ failed
exit 1
fi
cd mutter
if [ "$CI_MERGE_REQUEST_TARGET_BRANCH_NAME" ]; then
merge_request_remote=${CI_MERGE_REQUEST_SOURCE_PROJECT_URL//gnome-shell/mutter}
merge_request_branch=$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME
echo -n Looking for $merge_request_branch on remote ...
if fetch $merge_request_remote $merge_request_branch; then
echo \ found
mutter_target=FETCH_HEAD
else
echo \ not found
echo -n Looking for $CI_MERGE_REQUEST_TARGET_BRANCH_NAME instead ...
if fetch origin $CI_MERGE_REQUEST_TARGET_BRANCH_NAME; then
echo \ found
mutter_target=FETCH_HEAD
else
echo \ not found
fi
fi
fi
if [ -z "$mutter_target" ]; then
echo -n Looking for $CI_COMMIT_REF_NAME on remote ...
if fetch origin $CI_COMMIT_REF_NAME; then
echo \ found
mutter_target=FETCH_HEAD
else
echo \ not found
fi
fi
fallback_branch=${CI_COMMIT_TAG:+gnome-}${CI_COMMIT_TAG%%.*}
if [ -z "$mutter_target" -a "$fallback_branch" ]; then
echo -n Looking for $fallback_branch instead ...
if fetch origin $fallback_branch; then
echo \ found
mutter_target=FETCH_HEAD
else
echo \ not found
fi
fi
if [ -z "$mutter_target" ]; then
mutter_target=HEAD
echo Using $mutter_target instead
fi
git checkout -q $mutter_target