findversion.sh

   1 #!/bin/sh
   2
   3 # $Id$
   4
   5 # This file is part of OpenTTD.
   6 # OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   7 # OpenTTD 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.
   8 # See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   9
  10
  11 # Arguments given? Show help text.
  12 if [ "$#" != "0" ]; then
  13         cat <<EOF
  14 Usage: ./findversion.sh
  15 Finds the current revision and if the code is modified.
  16
  17 Output: <VERSION>\t<ISODATE>\t<MODIFIED>\t<HASH>
  18 VERSION
  19     a string describing what version of the code the current checkout is
  20     based on.
  21     This also includes the commit date, an indication of whether the checkout
  22     was modified and which branch was checked out. This value is not
  23     guaranteed to be sortable, but is mainly meant for identifying the
  24     revision and user display.
  25
  26     If no revision identifier could be found, this is left empty.
  27 ISODATE
  28     the commit date of the revision this checkout is based on.
  29     The commit date may differ from the author date.
  30     This can be used to decide upon the age of the source.
  31
  32     If no timestamp could be found, this is left empty.
  33 MODIFIED
  34     Whether (the src directory of) this checkout is modified or not. A
  35     value of 0 means not modified, a value of 2 means it was modified.
  36
  37     A value of 1 means that the modified status is unknown, because this
  38     is not an git checkout for example.
  39
  40 HASH
  41     the git revision hash
  42
  43 By setting the AWK environment variable, a caller can determine which
  44 version of "awk" is used. If nothing is set, this script defaults to
  45 "awk".
  46 EOF
  47 exit 1;
  48 fi
  49
  50 # Allow awk to be provided by the caller.
  51 if [ -z "$AWK" ]; then
  52         AWK=awk
  53 fi
  54
  55 # Find out some dirs
  56 cd `dirname "$0"`
  57 ROOT_DIR=`pwd`
  58
  59 # Determine if we are using a modified version
  60 # Assume the dir is not modified
  61 MODIFIED="0"
  62 if [ -d "$ROOT_DIR/.git" ]; then
  63         # We are a git checkout
  64         # Refresh the index to make sure file stat info is in sync, then look for modifications
  65         git update-index --refresh >/dev/null
  66         if [ -n "`git diff-index HEAD`" ]; then
  67                 MODIFIED="2"
  68         fi
  69         HASH=`LC_ALL=C git rev-parse --verify HEAD 2>/dev/null`
  70         SHORTHASH=`echo ${HASH} | cut -c1-8`
  71         ISODATE=`LC_ALL=C git show -s --pretty='format:%ci' HEAD | "$AWK" '{ gsub("-", "", $1); print $1 }'`
  72         BRANCH="`git symbolic-ref -q HEAD 2>/dev/null | sed 's@.*/@@'`"
  73         TAG="`git name-rev --name-only --tags --no-undefined HEAD 2>/dev/null | sed 's@\^0$@@'`"
  74
  75         if [ -n "$TAG" ]; then
  76                 VERSION="${TAG}"
  77         elif [ "${BRANCH}" = "master" ]; then
  78                 VERSION="${ISODATE}-g${SHORTHASH}"
  79         else
  80                 VERSION="${ISODATE}-${BRANCH}-g${SHORTHASH}"
  81         fi
  82
  83         if [ "$MODIFIED" -eq "2" ]; then
  84                 VERSION="${VERSION}M"
  85         fi
  86 elif [ -f "$ROOT_DIR/.ottdrev" ]; then
  87         # We are an exported source bundle
  88         cat $ROOT_DIR/.ottdrev
  89         exit
  90 else
  91         # We don't know
  92         MODIFIED="1"
  93         HASH=""
  94         SHORTHASH=""
  95         BRANCH=""
  96         ISODATE=""
  97         TAG=""
  98         VERSION=""
  99 fi
 100
 101 echo "$VERSION  $ISODATE        $MODIFIED       $HASH"