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#!/bin/bash
#
# Generates gerbv version string from a given prefix and the current commit
# short id
#
# @warning Version will only be updated when reconfiguring! Will have no effect
# on incremental builds
#
# @param $1 Version prefix
set -e
# Validate arguments
PREFIX="${1}"
if [ "" == "${PREFIX}" ]; then
(>&2 echo "Usage: git-version-gen.sh <prefix>")
exit 1
fi
# Validate environment
GIT=`command -v git`
if [ ! -x "${GIT}" ]; then
(>&2 echo "\`git' missing")
echo -n "${PREFIX}"
exit 0
fi
if ! ${GIT} rev-parse --is-inside-work-tree >& /dev/null ; then
echo -n "${PREFIX}"
exit 0
fi
# Get commit short id
RELEASE_COMMIT=`"${GIT}" rev-parse HEAD`
RELEASE_COMMIT_SHORT="${RELEASE_COMMIT:0:6}"
# Output final version
echo -n "${PREFIX}~${RELEASE_COMMIT_SHORT}"
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