gen-ver.sh

   1 #!/bin/sh
   2 #
   3 # libquvi
   4 # Copyright (C) 2012  Toni Gundogdu <legatvs@gmail.com>
   5 #
   6 # This file is part of libquvi <http://quvi.sourceforge.net/>.
   7 #
   8 # This program is free software: you can redistribute it and/or
   9 # modify it under the terms of the GNU Affero General Public
  10 # License as published by the Free Software Foundation, either
  11 # version 3 of the License, or (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU Affero General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU Affero General
  19 # Public License along with this program.  If not, see
  20 # <http://www.gnu.org/licenses/>.
  21 #
  22 dir=`dirname $0`
  23 o=
  24 # flags:
  25 m= # dump major and minor only
  26 c= # strip off the 'v' prefix
  27
  28 # VERSION file is part of the dist tarball.
  29 from_VERSION_file()
  30 {
  31   o=`cat "$dir/VERSION" 2>/dev/null`
  32 }
  33
  34 from_git_describe()
  35 {
  36   [ -d "$dir/.git" -o -f "$dir/.git" ] && {
  37     o=`git describe --match "v[0-9]*" --abbrev=4 HEAD 2>/dev/null`
  38   }
  39 }
  40
  41 make_vn_mm()
  42 {
  43   j=`expr "$o" : 'v\([0-9]\)'`
  44   n=`expr "$o" : 'v[0-9]\.\([0-9]*[0-9]\)'`
  45   o="v$j.$n"
  46 }
  47
  48 dump_vn()
  49 {
  50   [ -n "$m" ] && make_vn_mm
  51   [ -n "$c" ] && o=${o#v} # strip off the 'v' prefix.
  52   echo $o
  53   exit 0
  54 }
  55
  56 help()
  57 {
  58   echo "$0 [OPTIONS]
  59 -h  Show this help and exit
  60 -c  Strip off the 'v' prefix from the output
  61 -m  Output the major.minor -pair only"
  62   exit 0
  63 }
  64
  65 while [ $# -gt 0 ]
  66 do
  67   case "$1" in
  68     -m) m=1;;
  69     -c) c=1;;
  70     -h) help;;
  71      *) break;;
  72   esac
  73   shift
  74 done
  75
  76 from_VERSION_file
  77 [ -z "$o" ] && from_git_describe
  78 [ -n "$o" ] && dump_vn
  79 exit 1
  80
  81 # vim: set ts=2 sw=2 tw=72 expandtab: