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@@ -0,0 +1,56 @@
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+#!/bin/sh
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+
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+# git pre-push hook script to prevent "fixup!" and "squash!" commit
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+# from ending up in master, or in any branch if CUR_BRANCH check is removed.
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+# It is meant to be placed in .git/hooks directory.
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+#
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+# The following sample script was used as starting point:
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+# https://github.com/git/git/blob/master/templates/hooks--pre-push.sample
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+
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+z40=0000000000000000000000000000000000000000
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+
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+CUR_BRANCH=$(git rev-parse --abbrev-ref HEAD)
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+if [ "$CUR_BRANCH" != "master" ]
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+then
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+ exit 0
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+fi
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+
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+echo "Running pre-push hook"
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+
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+# shellcheck disable=SC2034
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+while read -r local_ref local_sha remote_ref remote_sha
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+do
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+ if [ "$local_sha" = $z40 ]
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+ then
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+ # Handle delete
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+ :
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+ else
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+ if [ "$remote_sha" = $z40 ]
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+ then
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+ # New branch, examine all commits
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+ range="$local_sha"
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+ else
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+ # Update to existing branch, examine new commits
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+ range="$remote_sha..$local_sha"
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+ fi
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+
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+ # Check for fixup! commit
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+ commit=$(git rev-list -n 1 --grep '^fixup!' "$range")
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+ if [ -n "$commit" ]
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+ then
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+ echo >&2 "Found fixup! commit in $local_ref, not pushing"
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+ exit 1
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+ fi
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+
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+ # Check for squash! commit
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+ commit=$(git rev-list -n 1 --grep '^squash!' "$range")
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+ if [ -n "$commit" ]
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+ then
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+ echo >&2 "Found squash! commit in $local_ref, not pushing"
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+ exit 1
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+ fi
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+ fi
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+done
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+
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+exit 0
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+
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