findversion.sh

   1 #!/bin/sh
   2
   3 # This file is part of OpenTTD.
   4 # 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.
   5 # 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.
   6 # 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/>.
   7
   8
   9 # Arguments given? Show help text.
  10 if [ "$#" != "0" ]; then
  11         cat <<EOF
  12 Usage: ./findversion.sh
  13 Finds the current revision and if the code is modified.
  14
  15 Output: <VERSION>\t<ISODATE>\t<MODIFIED>\t<HASH>
  16 VERSION
  17     a string describing what version of the code the current checkout is
  18     based on.
  19     This also includes the commit date, an indication of whether the checkout
  20     was modified and which branch was checked out. This value is not
  21     guaranteed to be sortable, but is mainly meant for identifying the
  22     revision and user display.
  23
  24     If no revision identifier could be found, this is left empty.
  25 ISODATE
  26     the commit date of the revision this checkout is based on.
  27     The commit date may differ from the author date.
  28     This can be used to decide upon the age of the source.
  29
  30     If no timestamp could be found, this is left empty.
  31 MODIFIED
  32     Whether (the src directory of) this checkout is modified or not. A
  33     value of 0 means not modified, a value of 2 means it was modified.
  34
  35     A value of 1 means that the modified status is unknown, because this
  36     is not an git checkout for example.
  37
  38 HASH
  39     the git revision hash
  40
  41 By setting the AWK environment variable, a caller can determine which
  42 version of "awk" is used. If nothing is set, this script defaults to
  43 "awk".
  44 EOF
  45 exit 1;
  46 fi
  47
  48 # Allow awk to be provided by the caller.
  49 if [ -z "$AWK" ]; then
  50         AWK=awk
  51 fi
  52
  53 # Find out some dirs
  54 cd `dirname "$0"`
  55 ROOT_DIR=`pwd`
  56
  57 # Determine if we are using a modified version
  58 # Assume the dir is not modified
  59 MODIFIED="0"
  60 if [ -d "$ROOT_DIR/.git" ] || [ -f "$ROOT_DIR/.git" ]; then
  61         # We are a git checkout
  62         # Refresh the index to make sure file stat info is in sync, then look for modifications
  63         git update-index --refresh >/dev/null
  64         if [ -n "`git diff-index HEAD`" ]; then
  65                 MODIFIED="2"
  66         fi
  67         HASH=`LC_ALL=C git rev-parse --verify HEAD 2>/dev/null`
  68         SHORTHASH=`echo ${HASH} | cut -c1-10`
  69         ISODATE=`LC_ALL=C git show -s --pretty='format:%ci' HEAD | "$AWK" '{ gsub("-", "", $1); print $1 }'`
  70         BRANCH="`git symbolic-ref -q HEAD 2>/dev/null | sed 's@.*/@@'`"
  71         TAG="`git name-rev --name-only --tags --no-undefined HEAD 2>/dev/null | sed 's@\^0$@@'`"
  72
  73         if [ "$MODIFIED" -eq "0" ]; then
  74                 hashprefix="-g"
  75         elif [ "$MODIFIED" -eq "2" ]; then
  76                 hashprefix="-m"
  77         else
  78                 hashprefix="-u"
  79         fi
  80
  81         if [ -n "$TAG" ]; then
  82                 VERSION="${TAG}"
  83                 ISTAG="1"
  84                 if [ -n "`echo \"${TAG}\" | grep \"^[0-9.]*$\"`" ]; then
  85                         ISSTABLETAG="1"
  86                 else
  87                         ISSTABLETAG="0"
  88                 fi
  89         else
  90                 VERSION="${ISODATE}-${BRANCH}${hashprefix}${SHORTHASH}"
  91                 ISTAG="0"
  92                 ISSTABLETAG="0"
  93         fi
  94
  95 elif [ -f "$ROOT_DIR/.ottdrev" ]; then
  96         # We are an exported source bundle
  97         cat $ROOT_DIR/.ottdrev
  98         exit
  99 else
 100         # We don't know
 101         MODIFIED="1"
 102         HASH=""
 103         SHORTHASH=""
 104         BRANCH=""
 105         ISODATE=""
 106         TAG=""
 107         VERSION=""
 108         ISTAG="0"
 109         ISSTABLETAG="0"
 110 fi
 111
 112 echo "$VERSION  $ISODATE        $MODIFIED       $HASH   $ISTAG  $ISSTABLETAG"