flusspferd-version.sh

#!/bin/sh
#
# The MIT License
#
# Copyright (c) 2008, 2009 Flusspferd contributors (see "CONTRIBUTORS" or
#                                      http://flusspferd.org/contributors.txt)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#

DEF_VER=dev

LF='
'

# Try git-describe, then default.
if test -d .git -o -f .git &&
	VN=`git describe --abbrev=4 HEAD 2>/dev/null` &&
	case "$VN" in
	*$LF*) (exit 1) ;;
	v[0-9]*)
		git update-index -q --refresh
		test -z "`git diff-index --name-only HEAD --`" ||
		VN="$VN-dirty" ;;
	esac
then
	VN=`echo "$VN" | sed -e 's/-/./g'`;
else
	VN="$DEF_VER"
fi

VN=`expr "$VN" : v*'\(.*\)'`

echo "$VN"