svnversion_regenerate.sh

   1 #!/bin/bash
   2
   3 #set -x
   4
   5 if test $# -ne 1 -a $# -ne 2
   6 then
   7   echo "Usage: "`basename "$0"`" <file> [define_name]"
   8   exit 1
   9 fi
  10
  11 OUTPUT_FILE="`pwd`/${1}"
  12 TEMP_FILE="${OUTPUT_FILE}.tmp"
  13
  14 #echo svnversion...
  15 #pwd
  16 #echo "$OUTPUT_FILE"
  17 #echo "$TEMP_FILE"
  18
  19 # The script should reside in the toplevel source directory which should contain
  20 # all version control files.
  21 cd `dirname ${0}`
  22
  23 if test $# -eq 2
  24 then
  25   DEFINE=${2}
  26 else
  27   DEFINE=SVN_VERSION
  28 fi
  29
  30 if test -d .svn
  31 then
  32   REV=`svnversion 2> /dev/null`
  33 else
  34   if test -d .git
  35   then
  36     git status >/dev/null # updates dirty state
  37     REV=`git show | grep '^ *git-svn-id:' | sed 's/.*@\([0-9]*\) .*/\1/'`
  38     if test ${REV}
  39     then
  40       test -z "$(git diff-index --name-only HEAD)" || REV="${REV}M"
  41     else
  42       REV=0+`git rev-parse HEAD`
  43       test -z "$(git diff-index --name-only HEAD)" || REV="${REV}-dirty"
  44     fi
  45   fi
  46 fi
  47
  48 if test -z ${REV}
  49 then
  50   REV="unknown"
  51 fi
  52
  53 echo "#define ${DEFINE} \"${REV}\"" > "${TEMP_FILE}"
  54 if test ! -f "${OUTPUT_FILE}"
  55 then
  56   echo "Generated ${OUTPUT_FILE} (${REV})"
  57   cp "${TEMP_FILE}" "${OUTPUT_FILE}"
  58   if test $? -ne 0; then exit 1; fi
  59 else
  60   if ! cmp -s "${OUTPUT_FILE}" "${TEMP_FILE}"
  61   then echo "Regenerated ${OUTPUT_FILE} (${REV})"
  62     cp "${TEMP_FILE}" "${OUTPUT_FILE}"
  63     if test $? -ne 0; then exit 1; fi
  64   fi
  65 fi
  66
  67 rm "${TEMP_FILE}"
  68
  69 exit $?