81 lines
1.8 KiB
Bash
Executable File
81 lines
1.8 KiB
Bash
Executable File
#!/bin/sh
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GVF=GIT-VERSION-FILE
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DEF_VER=0.19.GITGUI
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LF='
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'
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tree_search ()
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{
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head=$1
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tree=$2
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for p in $(git rev-list --parents --max-count=1 $head 2>/dev/null)
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do
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test $tree = $(git rev-parse $p^{tree} 2>/dev/null) &&
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vn=$(git describe --abbrev=4 $p 2>/dev/null) &&
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case "$vn" in
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gitgui-[0-9]*) echo $vn; break;;
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esac
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done
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}
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# Always use the tarball version file if found, just
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# in case we are somehow contained in a larger git
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# repository that doesn't actually track our state.
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# (At least one package manager is doing this.)
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#
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# We may be a subproject, so try looking for the merge
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# commit that supplied this directory content if we are
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# not at the toplevel. We probably will always be the
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# second parent in the commit, but we shouldn't rely on
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# that fact.
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#
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# If we are at the toplevel or the merge assumption fails
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# try looking for a gitgui-* tag.
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if test -f version &&
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VN=$(cat version)
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then
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: happy
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elif prefix="$(git rev-parse --show-prefix 2>/dev/null)"
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test -n "$prefix" &&
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head=$(git rev-list --max-count=1 HEAD -- . 2>/dev/null) &&
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tree=$(git rev-parse --verify "HEAD:$prefix" 2>/dev/null) &&
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VN=$(tree_search $head $tree)
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case "$VN" in
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gitgui-[0-9]*) : happy ;;
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*) (exit 1) ;;
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esac
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then
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VN=$(echo "$VN" | sed -e 's/^gitgui-//;s/-/./g');
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elif VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
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case "$VN" in
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gitgui-[0-9]*) : happy ;;
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*) (exit 1) ;;
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esac
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then
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VN=$(echo "$VN" | sed -e 's/^gitgui-//;s/-/./g');
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else
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VN="$DEF_VER"
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fi
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dirty=$(sh -c 'git diff-index --name-only HEAD' 2>/dev/null) || dirty=
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case "$dirty" in
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'')
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;;
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*)
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VN="$VN-dirty" ;;
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esac
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if test -r $GVF
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then
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VC=$(sed -e 's/^GITGUI_VERSION = //' <$GVF)
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else
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VC=unset
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fi
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test "$VN" = "$VC" || {
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echo >&2 "GITGUI_VERSION = $VN"
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echo "GITGUI_VERSION = $VN" >$GVF
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}
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