git-gui: fix typo in GIT-VERSION-GEN, "/dev/null" not "/devnull"
[git/git.git] / GIT-VERSION-GEN
1 #!/bin/sh
2
3 GVF=GIT-VERSION-FILE
4 DEF_VER=0.6.GITGUI
5
6 LF='
7 '
8
9 tree_search ()
10 {
11 head=$1
12 tree=$2
13 for p in $(git rev-list --parents --max-count=1 $head 2>/dev/null)
14 do
15 test $tree = $(git rev-parse $p^{tree} 2>/dev/null) &&
16 vn=$(git describe --abbrev=4 $p 2>/dev/null) &&
17 case "$vn" in
18 gitgui-[0-9]*) echo $vn; break;;
19 esac
20 done
21 }
22
23 # We may be a subproject, so try looking for the merge
24 # commit that supplied this directory content if we are
25 # not at the toplevel. We probably will always be the
26 # second parent in the commit, but we shouldn't rely on
27 # that fact.
28 #
29 # If we are at the toplevel or the merge assumption fails
30 # try looking for a gitgui-* tag, or fallback onto the
31 # distributed version file.
32
33 if prefix="$(git rev-parse --show-prefix 2>/dev/null)"
34 test -n "$prefix" &&
35 head=$(git rev-list --max-count=1 HEAD -- . 2>/dev/null) &&
36 tree=$(git rev-parse --verify "HEAD:$prefix" 2>/dev/null) &&
37 VN=$(tree_search $head $tree)
38 case "$VN" in
39 gitgui-[0-9]*) : happy ;;
40 *) (exit 1) ;;
41 esac
42 then
43 VN=$(echo "$VN" | sed -e 's/^gitgui-//;s/-/./g');
44 elif VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
45 case "$VN" in
46 gitgui-[0-9]*) : happy ;;
47 *) (exit 1) ;;
48 esac
49 then
50 VN=$(echo "$VN" | sed -e 's/^gitgui-//;s/-/./g');
51 elif test -f version
52 then
53 VN=$(cat version) || VN="$DEF_VER"
54 else
55 VN="$DEF_VER"
56 fi
57
58 dirty=$(sh -c 'git diff-index --name-only HEAD' 2>/dev/null) || dirty=
59 case "$dirty" in
60 '')
61 ;;
62 *)
63 VN="$VN-dirty" ;;
64 esac
65
66 if test -r $GVF
67 then
68 VC=$(sed -e 's/^GITGUI_VERSION = //' <$GVF)
69 else
70 VC=unset
71 fi
72 test "$VN" = "$VC" || {
73 echo >&2 "GITGUI_VERSION = $VN"
74 echo "GITGUI_VERSION = $VN" >$GVF
75 }
76
77