website/systemd/conservancy-www-update.sh

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#!/bin/sh
set -e
set -u
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set -x
PRODUCTION_BRANCH="${PRODUCTION_BRANCH:-master}"
git_rev_name() {
git rev-parse --abbrev-ref --symbolic-full-name "$@"
}
# If the checkout is not on the production branch,
# assume maintenance is happening and stop.
if [ "$(git_rev_name HEAD)" != "$PRODUCTION_BRANCH" ]; then
exit 0
fi
# Abort if the production branch isn't tracking a remote branch.
if ! git_upstream="$(git_rev_name '@{upstream}' 2>/dev/null)"; then
exit 3
fi
IFS=/ read git_remote git_refspec <<EOF
$git_upstream
EOF
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git fetch --quiet --no-tags "${git_remote}/${git_refspec}"
if [ "$(git rev-parse "$PRODUCTION_BRANCH")" = "$(git rev-parse "$git_upstream")" ]; then
exit 0
fi
exitcode=0
git merge --quiet --ff-only "$git_remote" "$git_refspec"
python3 -m compileall -q -x - www || exitcode=$?
chgrp -R www-data www || exitcode=$?
chmod -R g+rX-w,o+X-w www || exitcode=$?
chmod -R o+r www/conservancy/static || exitcode=$?
exit "$exitcode"