gen-ver.sh

   1 #!/bin/sh
   2 #
   3 # gen-ver.sh for libquvi-scripts
   4 # Copyright (C) 2011  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 set -e
  22
  23 from_file()
  24 {
  25   VN=`cat $1 2>/dev/null`
  26   if test -n "$VN"; then
  27     echo $VN
  28     exit 0
  29   fi
  30 }
  31
  32 gen_version() # $1=path to top source dir
  33 {
  34   path=$1 ; [ -z $path ] && path=.
  35
  36   # First check if the version file exists and use its value
  37   versionfn="$path/VERSION"
  38   [ -f "$versionfn" ]  && from_file "$versionfn"
  39
  40   # If that file is not found, or fails (e.g. empty), parse from m4/version.m4
  41   m4="$path/m4/version.m4"
  42   VN=`perl -ne'/(\d+)\.(\d+)\.(\d+)/ && print "$1.$2.$3"' < "$m4"`
  43   [ -z $VN ] && exit $?
  44
  45   # Use the "git describe" instead, if .git is present
  46   if test -d "$path/.git" -o -f "$path/.git" ; then
  47     _VN=`git describe --match "v[0-9]*" --abbrev=4 HEAD 2>/dev/null`
  48     [ -n "$_VN" ] && VN=$_VN
  49   fi
  50
  51   echo $VN
  52 }
  53
  54 help()
  55 {
  56   echo "Usage: $0 [-h] [top_srcdir]
  57 -h  Show this help and exit
  58 Run without options to print version. Define top_srcdir if run outside
  59 the top source directory."
  60   exit 0
  61 }
  62
  63 while [ $# -gt 0 ]
  64 do
  65   case "$1" in
  66     -h) help;;
  67     *) break;;
  68   esac
  69   shift
  70 done
  71
  72 gen_version $1