gen-ver.sh

   1 #!/bin/sh
   2 #
   3 # gen-ver.sh for libquvi-scripts
   4 # Copyright (C) 2012  Toni Gundogdu
   5 #
   6 # This library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Lesser General Public
   8 # License as published by the Free Software Foundation; either
   9 # version 2.1 of the License, or (at your option) any later version.
  10 #
  11 # This library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Lesser General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU Lesser General Public
  17 # License along with this library; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 # 02110-1301  USA
  20 #
  21 dir=`dirname $0`
  22 o=
  23 # flags:
  24 m= # dump major and minor only
  25 c= # strip off the 'v' prefix
  26
  27 # VERSION file is part of the dist tarball.
  28 from_VERSION_file()
  29 {
  30   o=`cat "$dir/VERSION" 2>/dev/null`
  31 }
  32
  33 from_git_describe()
  34 {
  35   [ -d "$dir/.git" -o -f "$dir/.git" ] && {
  36     o=`git describe --match "v[0-9]*" --abbrev=4 HEAD 2>/dev/null`
  37   }
  38 }
  39
  40 make_vn_mm()
  41 {
  42   j=`expr "$o" : 'v\([0-9]\)'`
  43   n=`expr "$o" : 'v[0-9]\.\([0-9]*[0-9]\)'`
  44   o="v$j.$n"
  45 }
  46
  47 dump_vn()
  48 {
  49   [ -n "$m" ] && make_vn_mm
  50   [ -n "$c" ] && o=${o#v} # strip off the 'v' prefix.
  51   echo $o
  52   exit 0
  53 }
  54
  55 help()
  56 {
  57   echo "$0 [OPTIONS]
  58 -h  Show this help and exit
  59 -c  Strip off the 'v' prefix from the output
  60 -m  Output the major.minor -pair only"
  61   exit 0
  62 }
  63
  64 while [ $# -gt 0 ]
  65 do
  66   case "$1" in
  67     -m) m=1;;
  68     -c) c=1;;
  69     -h) help;;
  70      *) break;;
  71   esac
  72   shift
  73 done
  74
  75 from_VERSION_file
  76 [ -z "$o" ] && from_git_describe
  77 [ -n "$o" ] && dump_vn
  78 exit 1
  79
  80 # vim: set ts=2 sw=2 tw=72 expandtab: