git-svn: add the commit-diff command

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 196402ce6672117aad9547d86bdf94dc2d3e68c6..5d25b7e12b8ef678013be76af137587c32b1f9ea 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,9 +1,29 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
+DEF_VER=v1.4.GIT
+
+# First try git-describe, then see if there is a version file
+# (included in release tarballs), then default
+if VN=$(git describe --abbrev=4 HEAD 2>/dev/null); then
+       VN=$(echo "$VN" | sed -e 's/-/./g');
+elif test -f version
+then
+       VN=$(cat version) || VN="$DEF_VER"
+else
+       VN="$DEF_VER"
+fi
+
+VN=$(expr "$VN" : v*'\(.*\)')
+
+dirty=$(sh -c 'git diff-index --name-only HEAD' 2>/dev/null) || dirty=
+case "$dirty" in
+'')
+       ;;
+*)
+       VN="$VN-dirty" ;;
+esac
 
-VN=$(git describe --abbrev=4 HEAD 2>/dev/null) || VN=v1.0.GIT
-VN=$(expr "$VN" : v'\(.*\)')
 if test -r $GVF
 then
        VC=$(sed -e 's/^GIT_VERSION = //' <$GVF)