tools/svn_repo_revision.sh

   1 #!/bin/sh
   2
   3 LC_ALL="C" # what for ?
   4
   5 [ -z "$top_srcdir" ] && top_srcdir="."
   6 rev_file=$top_srcdir'/geos_svn_revision.h'
   7
   8 read_rev() {
   9
  10     if test -d $top_srcdir"/.svn"; then
  11       read_rev_svn
  12     elif test -d $top_srcdir"/.git"; then
  13       read_rev_git
  14     else
  15       echo "Can't fetch local revision (neither .svn nor .git found)" >&2
  16       echo 0
  17     fi
  18 }
  19
  20 read_rev_git() {
  21
  22   # TODO: test on old systems, I think I saw some `which`
  23   #       implementations returning "nothing found" or something
  24   #       like that, making the later if ( ! $svn_exe ) always false
  25   #
  26   git_exe=`which git`;
  27   if test -z "$git_exe"; then
  28     echo "Can't fetch SVN revision: no git executable found" >&2
  29     echo 0;
  30   fi
  31
  32   rev=`${git_exe} log --grep=git-svn -1 | grep git-svn | cut -d@ -f2 | cut -d' ' -f1`
  33
  34   if test -z "$rev"; then
  35     echo "Can't fetch SVN revision from git log" >&2
  36     echo 0
  37   else
  38     echo $rev
  39   fi
  40 }
  41
  42 read_rev_svn() {
  43
  44   # TODO: test on old systems, I think I saw some `which`
  45   #       implementations returning "nothing found" or something
  46   #       like that, making the later if ( ! $svn_exe ) always false
  47   #
  48   svn_exe=`which svn`
  49   if test -z "$svn_exe"; then
  50     echo "Can't fetch SVN revision: no svn executable found" >&2
  51     echo 0;
  52   fi
  53
  54   svn_info=`"${svn_exe}" info | grep 'Last Changed Rev:' | cut -d: -f2`
  55
  56   if test -z "$svn_info"; then
  57     echo "Can't fetch SVN revision with `svn info`" >&2
  58     echo 0
  59   else
  60     echo ${svn_info}
  61   fi
  62 }
  63
  64 write_defn() {
  65   rev=$1
  66   oldrev=0
  67
  68   # Do not override the file if new detected
  69   # revision isn't zero nor different from the existing one
  70   if test -f $rev_file; then
  71     oldrev=`grep GEOS_SVN_REVISION ${rev_file} | awk '{print $2}'`
  72     if test "$rev" = 0 -o "$rev" = "$oldrev"; then
  73       echo "Not updating existing rev file at $oldrev" >&2
  74       return;
  75     fi
  76   fi
  77
  78   echo "#define GEOS_SVN_REVISION $rev" | tee $rev_file
  79   echo "Wrote rev '$rev' in file '$rev_file'" >&2
  80 }
  81
  82 # Read the svn revision number
  83 svn_rev=`read_rev`
  84
  85 # Write it
  86 write_defn $svn_rev