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: <REV>\t<REV_NR>\t<MODIFIED>\t<CLEAN_REV>
  18 REV
  19     a string describing what version of the code the current checkout is
  20     based on. The exact format of this string depends on the version
  21     control system in use, but it tries to identify the revision used as
  22     close as possible (using the svn revision number or hg/git hash).
  23     This also includes an indication of whether the checkout was
  24     modified and which branch was checked out. This value is not
  25     guaranteed to be sortable, but is mainly meant for identifying the
  26     revision and user display.
  27
  28     If no revision identifier could be found, this is left empty.
  29 REV_NR
  30     the revision number of the svn revision this checkout is based on.
  31     This can be used to determine which functionality is present in this
  32     checkout. For trunk svn checkouts and hg/git branches based upon it,
  33     this number should be accurate. For svn branch checkouts, this
  34     number is mostly meaningless, at least when comparing with the
  35     REV_NR from other branches or trunk.
  36
  37     This number should be sortable. Within a given branch or trunk, a
  38     higher number means a newer version. However, when using git or hg,
  39     this number will not increase on new commits.
  40
  41     If no revision number could be found, this is left empty.
  42 MODIFIED
  43     Whether (the src directory of) this checkout is modified or not. A
  44     value of 0 means not modified, a value of 2 means it was modified.
  45     Modification is determined in relation to the commit identified by
  46     REV, so not in relation to the svn revision identified by REV_NR.
  47
  48     A value of 1 means that the modified status is unknown, because this
  49     is not an svn/git/hg checkout for example.
  50
  51 CLEAN_REV
  52     the same as REV but without branch name
  53
  54 By setting the AWK environment variable, a caller can determine which
  55 version of "awk" is used. If nothing is set, this script defaults to
  56 "awk".
  57 EOF
  58 exit 1;
  59 fi
  60
  61 # Allow awk to be provided by the caller.
  62 if [ -z "$AWK" ]; then
  63         AWK=awk
  64 fi
  65
  66 # Find out some dirs
  67 cd `dirname "$0"`
  68 ROOT_DIR=`pwd`
  69
  70 # Determine if we are using a modified version
  71 # Assume the dir is not modified
  72 MODIFIED="0"
  73 if [ -d "$ROOT_DIR/.svn" ] || [ -d "$ROOT_DIR/../.svn" ]; then
  74         # We are an svn checkout
  75         if svnversion | grep -q 'M'; then
  76                 MODIFIED="2"
  77         fi
  78         # Find the revision like: rXXXXM-branch
  79         BRANCH=`LC_ALL=C svn info | "$AWK" '/^URL:.*branches/ { split($2, a, "/"); for(i in a) if (a[i]=="branches") { print a[i+1]; break } }'`
  80         TAG=`LC_ALL=C svn info | "$AWK" '/^URL:.*tags/ { split($2, a, "/"); for(i in a) if (a[i]=="tags") { print a[i+1]; break } }'`
  81         REV_NR=`LC_ALL=C svn info | "$AWK" '/^Last Changed Rev:/ { print $4 }'`
  82         if [ -n "$TAG" ]; then
  83                 REV=$TAG
  84         else
  85                 REV="r$REV_NR"
  86         fi
  87 elif [ -d "$ROOT_DIR/.git" ]; then
  88         # We are a git checkout
  89         # Refresh the index to make sure file stat info is in sync, then look for modifications
  90         git update-index --refresh >/dev/null
  91         if [ -n "`git diff-index HEAD`" ]; then
  92                 MODIFIED="2"
  93         fi
  94         HASH=`LC_ALL=C git rev-parse --verify HEAD 2>/dev/null`
  95         REV="g`echo $HASH | cut -c1-8`"
  96         BRANCH="`git symbolic-ref -q HEAD 2>/dev/null | sed 's@.*/@@;s@^master$@@'`"
  97         REV_NR=`LC_ALL=C git log --pretty=format:%s --grep="^(svn r[0-9]*)" -1 | sed "s@.*(svn r\([0-9]*\)).*@\1@"`
  98         if [ -z "$REV_NR" ]; then
  99                 # No rev? Maybe it is a custom git-svn clone
 100                 REV_NR=`LC_ALL=C git log --pretty=format:%b --grep="git-svn-id:.*@[0-9]*" -1 | sed "s@.*\@\([0-9]*\).*@\1@"`
 101         fi
 102         TAG="`git name-rev --name-only --tags --no-undefined HEAD 2>/dev/null | sed 's@\^0$@@'`"
 103         if [ -n "$TAG" ]; then
 104                 BRANCH=""
 105                 REV="$TAG"
 106         fi
 107 elif [ -d "$ROOT_DIR/.hg" ]; then
 108         # We are a hg checkout
 109         if hg status | grep -v -q '^?'; then
 110                 MODIFIED="2"
 111         fi
 112         HASH=`LC_ALL=C hg id -i | cut -c1-12`
 113         REV="h`echo $HASH | cut -c1-8`"
 114         BRANCH="`hg branch | sed 's@^default$@@'`"
 115         TAG="`hg id -t | grep -v 'tip$'`"
 116         if [ -n "$TAG" ]; then
 117                 BRANCH=""
 118                 REV="$TAG"
 119         fi
 120         REV_NR=`LC_ALL=C hg log -f -k "(svn r" -l 1 --template "{desc|firstline}\n" | grep "^(svn r[0-9]*)" | sed "s@.*(svn r\([0-9]*\)).*@\1@"`
 121         if [ -z "$REV_NR" ]; then
 122                 # No rev? Maybe it is a custom hgsubversion clone
 123                 REV_NR=`LC_ALL=C hg parent --template="{svnrev}"`
 124         fi
 125 elif [ -f "$ROOT_DIR/.ottdrev" ]; then
 126         # We are an exported source bundle
 127         cat $ROOT_DIR/.ottdrev
 128         exit
 129 else
 130         # We don't know
 131         MODIFIED="1"
 132         BRANCH=""
 133         REV=""
 134         REV_NR=""
 135 fi
 136
 137 if [ "$MODIFIED" -eq "2" ]; then
 138         REV="${REV}M"
 139 fi
 140
 141 CLEAN_REV=${REV}
 142
 143 if [ -n "$BRANCH" ]; then
 144         REV="${REV}-$BRANCH"
 145 fi
 146
 147 echo "$REV      $REV_NR $MODIFIED       $CLEAN_REV"