guess-rev.sh

   1 #!/bin/sh
   2 #
   3 # This scripts adds local version information from the version
   4 # control systems git, mercurial (hg) and subversion (svn).
   5 #
   6 # Copied from Linux 2.6.32 scripts/setlocalversion and modified
   7 # slightly to work better for OpenOCD.
   8 #
   9
  10 usage() {
  11         echo "Usage: $0 [srctree]" >&2
  12         exit 1
  13 }
  14
  15 cd "${1:-.}" || usage
  16
  17 # Check for git and a git repo.
  18 if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
  19
  20         # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore it,
  21         # because this version is defined in the top level Makefile.
  22         if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
  23
  24                 # If we are past a tagged commit (like "v2.6.30-rc5-302-g72357d5"),
  25                 # we pretty print it.
  26                 if atag="`git describe 2>/dev/null`"; then
  27                         echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
  28
  29                 # If we don't have a tag at all we print -g{commitish}.
  30                 else
  31                         printf '%s%s' -g $head
  32                 fi
  33         fi
  34
  35         # Is this git on svn?
  36         if git config --get svn-remote.svn.url >/dev/null; then
  37                 printf -- '-svn%s' "`git svn find-rev $head`"
  38         fi
  39
  40         # Update index only on r/w media
  41         [ -w . ] && git update-index --refresh --unmerged > /dev/null
  42
  43         # Check for uncommitted changes
  44         if git diff-index --name-only HEAD | grep -v "^scripts/package" \
  45             | read dummy; then
  46                 printf '%s' -dirty
  47         fi
  48
  49         # All done with git
  50         exit
  51 fi
  52
  53 # Check for mercurial and a mercurial repo.
  54 if hgid=`hg id 2>/dev/null`; then
  55         tag=`printf '%s' "$hgid" | cut -d' ' -f2`
  56
  57         # Do we have an untagged version?
  58         if [ -z "$tag" -o "$tag" = tip ]; then
  59                 id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
  60                 printf '%s%s' -hg "$id"
  61         fi
  62
  63         # Are there uncommitted changes?
  64         # These are represented by + after the changeset id.
  65         case "$hgid" in
  66                 *+|*+\ *) printf '%s' -dirty ;;
  67         esac
  68
  69         # All done with mercurial
  70         exit
  71 fi
  72
  73 # Check for svn and a svn repo.
  74 if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
  75         rev=`echo $rev | awk '{print $NF}'`
  76         printf -- '-svn%s' "$rev"
  77
  78         # All done with svn
  79         exit
  80 fi
  81
  82 # There's no reecognized repository; we must be a snapshot.
  83 printf -- '-snapshot'