#!/bin/sh

#

# libquvi

# Copyright (C) 2012  Toni Gundogdu <legatvs@gmail.com>

#

# This file is part of libquvi <http://quvi.sourceforge.net/>.

#

# This program is free software: you can redistribute it and/or

# modify it under the terms of the GNU Affero General Public

# License as published by the Free Software Foundation, either

# version 3 of the License, or (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU Affero General Public License for more details.

#

# You should have received a copy of the GNU Affero General

# Public License along with this program.  If not, see

# <http://www.gnu.org/licenses/>.

#

dir=`dirname $0`

o=

# flags:

m= # dump major and minor only

c= # strip off the 'v' prefix

# VERSION file is part of the dist tarball.

from_VERSION_file()

{

  o=`cat "$dir/VERSION" 2>/dev/null`

}

from_git_describe()

{

  [ -d "$dir/.git" -o -f "$dir/.git" ] && {

    o=`git describe --match "v[0-9]*" --abbrev=4 HEAD 2>/dev/null`

  }

}

make_vn_mm()

{

  j=`expr "$o" : 'v\([0-9]\)'`

  n=`expr "$o" : 'v[0-9]\.\([0-9]*[0-9]\)'`

  o="v$j.$n"

}

dump_vn()

{

  [ -n "$m" ] && make_vn_mm

  [ -n "$c" ] && o=${o#v} # strip off the 'v' prefix.

  echo $o

  exit 0

}

help()

{

  echo "$0 [OPTIONS]

-h  Show this help and exit

-c  Strip off the 'v' prefix from the output

-m  Output the major.minor -pair only"

  exit 0

}

while [ $# -gt 0 ]

do

  case "$1" in

    -m) m=1;;

    -c) c=1;;

    -h) help;;

     *) break;;

  esac

  shift

done

from_VERSION_file

[ -z "$o" ] && from_git_describe

[ -n "$o" ] && dump_vn

exit 1

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