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#!/bin/bash
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#
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# Usage: Copy this file to your repository's .git/hooks directory. Name it
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# "pre-push" and set the executable bit.
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#
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# This hook aborts git push when the log message of any commits to be pushed
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# starts with "WIP" (work in progress) or "stash", if the remote ref begins
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# with "refs/for/". This prevents incomplete/unwanted commits from being
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# pushed to Gerrit instances.
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#
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# When pushing to Gerrit, this hook also runs a Gradle build similar to
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# Gerrit's presubmit, to help catch errors locally and reduce churn on CLs.
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#
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# Remaining comments are copied from .git/hooks/pre-push.sample.
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#
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# An example hook script to verify what is about to be pushed. Called by "git
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# push" after it has checked the remote status, but before anything has been
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# pushed. If this script exits with a non-zero status nothing will be pushed.
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#
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# This hook is called with the following parameters:
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#
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# $1 -- Name of the remote to which the push is being done
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# $2 -- URL to which the push is being done
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#
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# If pushing without using a named remote those arguments will be equal.
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#
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# Information about the commits which are being pushed is supplied as lines to
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# the standard input in the form:
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#
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# <local ref> <local sha1> <remote ref> <remote sha1>
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remote="$1"
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url="$2"
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z40=0000000000000000000000000000000000000000
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while read local_ref local_sha remote_ref remote_sha
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do
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# Handle delete
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if [[ "$local_sha" = "$z40" ]]; then
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echo "$local_ref, $remote_ref"
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:
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# Move along if we don't match refs/for/
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elif [[ ! "$remote_ref" =~ ^refs/for/.+ ]]; then
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echo "$local_ref, $remote_ref"
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:
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else
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echo "$local_ref, $local_sha, $remote_ref, $remote_sha"
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if [[ "$remote_sha" = "$z40" ]]; then
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# New branch, examine all commits
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branchname="${remote_ref#refs/for/}"
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if [[ "$branchname" =~ % ]]; then
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# Gerrit allows various push-options by appending them to the remote
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# using "%<option>=<string>[,<option>=<string>...]". Strip this off.
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# TODO: '%' is a valid character in branch names, so this could mangle
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# the branch name. We should find a way to workaround that.
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echo "NOTE: stripping Gerrit push-options beginning at '%'"
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branchname=${branchname%%\%*}
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fi
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if git check-ref-format --allow-onelevel "$branchname"; then
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range="${remote}/${branchname}..$local_sha"
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fi
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if [[ -z "$range" ]]; then
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range="$local_sha"
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fi
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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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echo "Examining $range"
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# Check for WIP/stash commit
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commit=`git rev-list -n 1 -i --grep '^WIP' --grep '^stash' "$range"`
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if [[ -n "$commit" ]]; then
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echo >&2 "Found WIP/stash commit in $local_ref, not pushing ($commit)"
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exit 1
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fi
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# At least one ref is going to Gerrit, so we should run additional checks
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run_checks=true
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fi
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done
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if [[ -n "$run_checks" ]]; then
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# pre-push usually executes in the repository root, but just to be safe...
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cd "$(git rev-parse --show-toplevel)"
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./gradlew --init-script gradle/init.gradle.kts check
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exit $?
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fi
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exit 0
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