pre-push

#!/bin/sh

# An hook script to verify what is about to be pushed.  Called by "git
# push" after it has checked the remote status, but before anything has been
# pushed.  If this script exits with a non-zero status nothing will be pushed.
#
# This hook is called with the following parameters:
#
# $1 -- Name of the remote to which the push is being done
# $2 -- URL to which the push is being done
#
# If pushing without using a named remote those arguments will be equal.
#
# Information about the commits which are being pushed is supplied as lines to
# the standard input in the form:
#
#   <local ref> <local sha1> <remote ref> <remote sha1>
#
# This hook checks that all commits to be pushed have an associated github issue.

remote="$1"
url="$2"

z40=0000000000000000000000000000000000000000

while read local_ref local_sha remote_ref remote_sha
do
	if [ "$local_sha" = $z40 ]
	then
		# Handle delete
		:
	else
		if [ "$remote_sha" = $z40 ]
		then
			# New branch, examine all commits
			range="$local_sha"
		else
			# Update to existing branch, examine new commits
			range="$remote_sha..$local_sha"
		fi

                echo "Checking assigned github issues:"
                echo ""

                for sha in $(git rev-list "$range"); do
                    short_sha="$(git rev-parse --short $sha)"
                    commit_brief="$(git log -1 --pretty=%s $sha)"
                    echo " ($short_sha) $commit_brief"

                    if ! ./check-issue-number.py "$commit_brief"; then
                        exit 1
                    fi
                done
	fi
done

exit 0